diff --git a/ci/semver.sh b/ci/semver.sh
index ebfe767c0634e..bf8d32917f701 100644
--- a/ci/semver.sh
+++ b/ci/semver.sh
@@ -35,6 +35,7 @@ i686-unknown-freebsd \
 i686-unknown-linux-gnu \
 i686-unknown-linux-musl \
 i686-pc-windows-gnu \
+mipsel-unknown-linux-uclibc \
 x86_64-unknown-freebsd \
 x86_64-unknown-linux-gnu \
 x86_64-unknown-linux-musl \
diff --git a/libc-test/build.rs b/libc-test/build.rs
index ccbef16c5cd13..512e5e3e126ca 100755
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -2254,6 +2254,7 @@ fn test_linux(target: &str) {
     let gnuabihf = target.contains("gnueabihf");
     let x86_64_gnux32 = target.contains("gnux32") && x86_64;
     let riscv64 = target.contains("riscv64");
+    let uclibc = target.contains("uclibc");
 
     let mut cfg = ctest_cfg();
     cfg.define("_GNU_SOURCE", None);
@@ -2363,7 +2364,8 @@ fn test_linux(target: &str) {
                [!(x32 || musl || gnu)]: "sys/sysctl.h",
                // <execinfo.h> is not supported by musl:
                // https://www.openwall.com/lists/musl/2015/04/09/3
-               [!musl]: "execinfo.h",
+               // <execinfo.h> is not present on uclibc.
+               [!(musl || uclibc)]: "execinfo.h",
     }
 
     // Include linux headers at the end:
@@ -2405,8 +2407,9 @@ fn test_linux(target: &str) {
         "linux/sockios.h",
         "linux/vm_sockets.h",
         "linux/wait.h",
-        "sys/auxv.h",
         "sys/fanotify.h",
+        // <sys/auxv.h> is not present on uclibc
+        [!uclibc]: "sys/auxv.h",
     }
 
     // note: aio.h must be included before sys/mount.h
@@ -2414,7 +2417,8 @@ fn test_linux(target: &str) {
         cfg:
         "sys/xattr.h",
         "sys/sysinfo.h",
-        "aio.h",
+        // AIO is not supported by uclibc:
+        [!uclibc]: "aio.h",
     }
 
     cfg.type_name(move |ty, is_struct, is_union| {
@@ -2637,6 +2641,14 @@ fn test_linux(target: &str) {
             | "CAN_RAW_FILTER_MAX"
             | "CAN_NPROTO" => true,
 
+            "MS_RMT_MASK" if uclibc => true, // updated in glibc 2.22 and musl 1.1.13
+
+            // These are not defined in uclibc but will be passed through to the kernel
+            // so they will be supported if the kernel supports them.  Otherwise the
+            // kernel will return runtime errors.  Since they're required for tokio 
+            // support, we except them from the tests here.
+            // See https://github.com/rust-lang/libc/pull/2019#issuecomment-754351482
+            "EPOLLEXCLUSIVE" | "EPOLLWAKEUP" if uclibc => true,
             _ => false,
         }
     });
@@ -2681,6 +2693,31 @@ fn test_linux(target: &str) {
             // FIXME: It now takes c_void instead of timezone since glibc 2.31.
             "gettimeofday" if gnu => true,
 
+            // These are all implemented as static inline functions in uclibc, so
+            // they cannot be linked against.
+            // If implementations are required, they might need to be implemented
+            // in this crate.
+            "posix_spawnattr_init" if uclibc => true,
+            "posix_spawnattr_destroy" if uclibc => true,
+            "posix_spawnattr_getsigdefault" if uclibc => true,
+            "posix_spawnattr_setsigdefault" if uclibc => true,
+            "posix_spawnattr_getsigmask" if uclibc => true,
+            "posix_spawnattr_setsigmask" if uclibc => true,
+            "posix_spawnattr_getflags" if uclibc => true,
+            "posix_spawnattr_setflags" if uclibc => true,
+            "posix_spawnattr_getpgroup" if uclibc => true,
+            "posix_spawnattr_setpgroup" if uclibc => true,
+            "posix_spawnattr_getschedpolicy" if uclibc => true,
+            "posix_spawnattr_setschedpolicy" if uclibc => true,
+            "posix_spawnattr_getschedparam" if uclibc => true,
+            "posix_spawnattr_setschedparam" if uclibc => true,
+            "posix_spawn_file_actions_init" if uclibc => true,
+            "posix_spawn_file_actions_destroy" if uclibc => true,
+
+            // uclibc defines the flags type as a uint, but dependent crates
+            // assume it's a int instead.
+            "getnameinfo" if uclibc => true,
+
             _ => false,
         }
     });
diff --git a/src/unix/linux_like/linux/gnu/mod.rs b/src/unix/linux_like/linux/gnu/mod.rs
index 5762a3d7805be..9db06dde4e878 100644
--- a/src/unix/linux_like/linux/gnu/mod.rs
+++ b/src/unix/linux_like/linux/gnu/mod.rs
@@ -285,6 +285,19 @@ s! {
         __re_nsub: ::size_t,
         __bitfield: u8,
     }
+
+    pub struct Elf64_Chdr {
+        pub ch_type: ::Elf64_Word,
+        pub ch_reserved: ::Elf64_Word,
+        pub ch_size: ::Elf64_Xword,
+        pub ch_addralign: ::Elf64_Xword,
+    }
+
+    pub struct Elf32_Chdr {
+        pub ch_type: ::Elf32_Word,
+        pub ch_size: ::Elf32_Word,
+        pub ch_addralign: ::Elf32_Word,
+    }
 }
 
 impl siginfo_t {
@@ -618,6 +631,22 @@ pub const TCP_FASTOPEN: ::c_int = 23;
 pub const TCP_TIMESTAMP: ::c_int = 24;
 pub const TCP_FASTOPEN_CONNECT: ::c_int = 30;
 
+pub const FAN_MARK_INODE: ::c_uint = 0x0000_0000;
+pub const FAN_MARK_MOUNT: ::c_uint = 0x0000_0010;
+// NOTE: FAN_MARK_FILESYSTEM requires Linux Kernel >= 4.20.0
+pub const FAN_MARK_FILESYSTEM: ::c_uint = 0x0000_0100;
+
+pub const AF_IB: ::c_int = 27;
+pub const AF_MPLS: ::c_int = 28;
+pub const AF_NFC: ::c_int = 39;
+pub const AF_VSOCK: ::c_int = 40;
+pub const AF_XDP: ::c_int = 44;
+pub const PF_IB: ::c_int = AF_IB;
+pub const PF_MPLS: ::c_int = AF_MPLS;
+pub const PF_NFC: ::c_int = AF_NFC;
+pub const PF_VSOCK: ::c_int = AF_VSOCK;
+pub const PF_XDP: ::c_int = AF_XDP;
+
 /* DCCP socket options */
 pub const DCCP_SOCKOPT_PACKET_SIZE: ::c_int = 1;
 pub const DCCP_SOCKOPT_SERVICE: ::c_int = 2;
@@ -644,6 +673,7 @@ pub const SIGEV_THREAD_ID: ::c_int = 4;
 pub const BUFSIZ: ::c_uint = 8192;
 pub const TMP_MAX: ::c_uint = 238328;
 pub const FOPEN_MAX: ::c_uint = 16;
+pub const FILENAME_MAX: ::c_uint = 4096;
 pub const POSIX_MADV_DONTNEED: ::c_int = 4;
 pub const _SC_EQUIV_CLASS_MAX: ::c_int = 41;
 pub const _SC_CHARCLASS_NAME_MAX: ::c_int = 45;
@@ -855,11 +885,6 @@ pub const PTRACE_INTERRUPT: ::c_uint = 0x4207;
 pub const PTRACE_LISTEN: ::c_uint = 0x4208;
 pub const PTRACE_PEEKSIGINFO: ::c_uint = 0x4209;
 
-pub const EPOLLWAKEUP: ::c_int = 0x20000000;
-
-pub const SEEK_DATA: ::c_int = 3;
-pub const SEEK_HOLE: ::c_int = 4;
-
 // linux/rtnetlink.h
 pub const TCA_PAD: ::c_ushort = 9;
 pub const TCA_DUMP_INVISIBLE: ::c_ushort = 10;
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 60f78dfed2895..06406b89168f2 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -300,9 +300,18 @@ s! {
         #[cfg(target_pointer_width = "32")]
         pub dlpi_phnum: Elf32_Half,
 
+        // As of uClibc 1.0.36, the following fields are
+        // gated behind a "#if 0" block which always evaluates
+        // to false. So I'm just removing these, and if uClibc changes
+        // the #if block in the future to include the following fields, these
+        // will probably need including here. tsidea, skrap
+        #[cfg(not(target_env = "uclibc"))]
         pub dlpi_adds: ::c_ulonglong,
+        #[cfg(not(target_env = "uclibc"))]
         pub dlpi_subs: ::c_ulonglong,
+        #[cfg(not(target_env = "uclibc"))]
         pub dlpi_tls_modid: ::size_t,
+        #[cfg(not(target_env = "uclibc"))]
         pub dlpi_tls_data: *mut ::c_void,
     }
 
@@ -406,19 +415,6 @@ s! {
         pub sh_entsize: Elf64_Xword,
     }
 
-    pub struct Elf32_Chdr {
-        pub ch_type: Elf32_Word,
-        pub ch_size: Elf32_Word,
-        pub ch_addralign: Elf32_Word,
-    }
-
-    pub struct Elf64_Chdr {
-        pub ch_type: Elf64_Word,
-        pub ch_reserved: Elf64_Word,
-        pub ch_size: Elf64_Xword,
-        pub ch_addralign: Elf64_Xword,
-    }
-
     pub struct ucred {
         pub pid: ::pid_t,
         pub uid: ::uid_t,
@@ -897,78 +893,76 @@ cfg_if! {
     }
 }
 
-pub const ABDAY_1: ::nl_item = 0x20000;
-pub const ABDAY_2: ::nl_item = 0x20001;
-pub const ABDAY_3: ::nl_item = 0x20002;
-pub const ABDAY_4: ::nl_item = 0x20003;
-pub const ABDAY_5: ::nl_item = 0x20004;
-pub const ABDAY_6: ::nl_item = 0x20005;
-pub const ABDAY_7: ::nl_item = 0x20006;
-
-pub const DAY_1: ::nl_item = 0x20007;
-pub const DAY_2: ::nl_item = 0x20008;
-pub const DAY_3: ::nl_item = 0x20009;
-pub const DAY_4: ::nl_item = 0x2000A;
-pub const DAY_5: ::nl_item = 0x2000B;
-pub const DAY_6: ::nl_item = 0x2000C;
-pub const DAY_7: ::nl_item = 0x2000D;
-
-pub const ABMON_1: ::nl_item = 0x2000E;
-pub const ABMON_2: ::nl_item = 0x2000F;
-pub const ABMON_3: ::nl_item = 0x20010;
-pub const ABMON_4: ::nl_item = 0x20011;
-pub const ABMON_5: ::nl_item = 0x20012;
-pub const ABMON_6: ::nl_item = 0x20013;
-pub const ABMON_7: ::nl_item = 0x20014;
-pub const ABMON_8: ::nl_item = 0x20015;
-pub const ABMON_9: ::nl_item = 0x20016;
-pub const ABMON_10: ::nl_item = 0x20017;
-pub const ABMON_11: ::nl_item = 0x20018;
-pub const ABMON_12: ::nl_item = 0x20019;
-
-pub const MON_1: ::nl_item = 0x2001A;
-pub const MON_2: ::nl_item = 0x2001B;
-pub const MON_3: ::nl_item = 0x2001C;
-pub const MON_4: ::nl_item = 0x2001D;
-pub const MON_5: ::nl_item = 0x2001E;
-pub const MON_6: ::nl_item = 0x2001F;
-pub const MON_7: ::nl_item = 0x20020;
-pub const MON_8: ::nl_item = 0x20021;
-pub const MON_9: ::nl_item = 0x20022;
-pub const MON_10: ::nl_item = 0x20023;
-pub const MON_11: ::nl_item = 0x20024;
-pub const MON_12: ::nl_item = 0x20025;
-
-pub const AM_STR: ::nl_item = 0x20026;
-pub const PM_STR: ::nl_item = 0x20027;
-
-pub const D_T_FMT: ::nl_item = 0x20028;
-pub const D_FMT: ::nl_item = 0x20029;
-pub const T_FMT: ::nl_item = 0x2002A;
-pub const T_FMT_AMPM: ::nl_item = 0x2002B;
-
-pub const ERA: ::nl_item = 0x2002C;
-pub const ERA_D_FMT: ::nl_item = 0x2002E;
-pub const ALT_DIGITS: ::nl_item = 0x2002F;
-pub const ERA_D_T_FMT: ::nl_item = 0x20030;
-pub const ERA_T_FMT: ::nl_item = 0x20031;
-
-pub const CODESET: ::nl_item = 14;
-
-pub const CRNCYSTR: ::nl_item = 0x4000F;
-
-pub const RUSAGE_THREAD: ::c_int = 1;
-pub const RUSAGE_CHILDREN: ::c_int = -1;
-
-pub const RADIXCHAR: ::nl_item = 0x10000;
-pub const THOUSEP: ::nl_item = 0x10001;
-
-pub const YESEXPR: ::nl_item = 0x50000;
-pub const NOEXPR: ::nl_item = 0x50001;
-pub const YESSTR: ::nl_item = 0x50002;
-pub const NOSTR: ::nl_item = 0x50003;
+cfg_if! {
+    if #[cfg(any(target_env = "gnu", target_env = "musl"))] {
+        pub const ABDAY_1: ::nl_item = 0x20000;
+        pub const ABDAY_2: ::nl_item = 0x20001;
+        pub const ABDAY_3: ::nl_item = 0x20002;
+        pub const ABDAY_4: ::nl_item = 0x20003;
+        pub const ABDAY_5: ::nl_item = 0x20004;
+        pub const ABDAY_6: ::nl_item = 0x20005;
+        pub const ABDAY_7: ::nl_item = 0x20006;
+
+        pub const DAY_1: ::nl_item = 0x20007;
+        pub const DAY_2: ::nl_item = 0x20008;
+        pub const DAY_3: ::nl_item = 0x20009;
+        pub const DAY_4: ::nl_item = 0x2000A;
+        pub const DAY_5: ::nl_item = 0x2000B;
+        pub const DAY_6: ::nl_item = 0x2000C;
+        pub const DAY_7: ::nl_item = 0x2000D;
+
+        pub const ABMON_1: ::nl_item = 0x2000E;
+        pub const ABMON_2: ::nl_item = 0x2000F;
+        pub const ABMON_3: ::nl_item = 0x20010;
+        pub const ABMON_4: ::nl_item = 0x20011;
+        pub const ABMON_5: ::nl_item = 0x20012;
+        pub const ABMON_6: ::nl_item = 0x20013;
+        pub const ABMON_7: ::nl_item = 0x20014;
+        pub const ABMON_8: ::nl_item = 0x20015;
+        pub const ABMON_9: ::nl_item = 0x20016;
+        pub const ABMON_10: ::nl_item = 0x20017;
+        pub const ABMON_11: ::nl_item = 0x20018;
+        pub const ABMON_12: ::nl_item = 0x20019;
+
+        pub const MON_1: ::nl_item = 0x2001A;
+        pub const MON_2: ::nl_item = 0x2001B;
+        pub const MON_3: ::nl_item = 0x2001C;
+        pub const MON_4: ::nl_item = 0x2001D;
+        pub const MON_5: ::nl_item = 0x2001E;
+        pub const MON_6: ::nl_item = 0x2001F;
+        pub const MON_7: ::nl_item = 0x20020;
+        pub const MON_8: ::nl_item = 0x20021;
+        pub const MON_9: ::nl_item = 0x20022;
+        pub const MON_10: ::nl_item = 0x20023;
+        pub const MON_11: ::nl_item = 0x20024;
+        pub const MON_12: ::nl_item = 0x20025;
+
+        pub const AM_STR: ::nl_item = 0x20026;
+        pub const PM_STR: ::nl_item = 0x20027;
+
+        pub const D_T_FMT: ::nl_item = 0x20028;
+        pub const D_FMT: ::nl_item = 0x20029;
+        pub const T_FMT: ::nl_item = 0x2002A;
+        pub const T_FMT_AMPM: ::nl_item = 0x2002B;
+
+        pub const ERA: ::nl_item = 0x2002C;
+        pub const ERA_D_FMT: ::nl_item = 0x2002E;
+        pub const ALT_DIGITS: ::nl_item = 0x2002F;
+        pub const ERA_D_T_FMT: ::nl_item = 0x20030;
+        pub const ERA_T_FMT: ::nl_item = 0x20031;
+
+        pub const CODESET: ::nl_item = 14;
+        pub const CRNCYSTR: ::nl_item = 0x4000F;
+        pub const RADIXCHAR: ::nl_item = 0x10000;
+        pub const THOUSEP: ::nl_item = 0x10001;
+        pub const YESEXPR: ::nl_item = 0x50000;
+        pub const NOEXPR: ::nl_item = 0x50001;
+        pub const YESSTR: ::nl_item = 0x50002;
+        pub const NOSTR: ::nl_item = 0x50003;
+    }
+}
 
-pub const FILENAME_MAX: ::c_uint = 4096;
+pub const RUSAGE_CHILDREN: ::c_int = -1;
 pub const L_tmpnam: ::c_uint = 20;
 pub const _PC_LINK_MAX: ::c_int = 0;
 pub const _PC_MAX_CANON: ::c_int = 1;
@@ -1278,6 +1272,10 @@ pub const IFF_DETACH_QUEUE: ::c_int = 0x0400;
 pub const IFF_PERSIST: ::c_int = 0x0800;
 pub const IFF_NOFILTER: ::c_int = 0x1000;
 
+// Since Linux 3.1
+pub const SEEK_DATA: ::c_int = 3;
+pub const SEEK_HOLE: ::c_int = 4;
+
 pub const ST_RDONLY: ::c_ulong = 1;
 pub const ST_NOSUID: ::c_ulong = 2;
 pub const ST_NODEV: ::c_ulong = 4;
@@ -1298,7 +1296,6 @@ pub const RTLD_NOW: ::c_int = 0x2;
 pub const AT_EACCESS: ::c_int = 0x200;
 
 pub const TCP_MD5SIG: ::c_int = 14;
-pub const TCP_ULP: ::c_int = 31;
 
 align_const! {
     pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
@@ -1344,17 +1341,6 @@ pub const IPPROTO_MPTCP: ::c_int = 262;
 )]
 pub const IPPROTO_MAX: ::c_int = 256;
 
-pub const AF_IB: ::c_int = 27;
-pub const AF_MPLS: ::c_int = 28;
-pub const AF_NFC: ::c_int = 39;
-pub const AF_VSOCK: ::c_int = 40;
-pub const AF_XDP: ::c_int = 44;
-pub const PF_IB: ::c_int = AF_IB;
-pub const PF_MPLS: ::c_int = AF_MPLS;
-pub const PF_NFC: ::c_int = AF_NFC;
-pub const PF_VSOCK: ::c_int = AF_VSOCK;
-pub const PF_XDP: ::c_int = AF_XDP;
-
 // System V IPC
 pub const IPC_PRIVATE: ::key_t = 0;
 
@@ -1371,7 +1357,6 @@ pub const MSG_INFO: ::c_int = 12;
 
 pub const MSG_NOERROR: ::c_int = 0o10000;
 pub const MSG_EXCEPT: ::c_int = 0o20000;
-pub const MSG_COPY: ::c_int = 0o40000;
 
 pub const SHM_R: ::c_int = 0o400;
 pub const SHM_W: ::c_int = 0o200;
@@ -1379,16 +1364,17 @@ pub const SHM_W: ::c_int = 0o200;
 pub const SHM_RDONLY: ::c_int = 0o10000;
 pub const SHM_RND: ::c_int = 0o20000;
 pub const SHM_REMAP: ::c_int = 0o40000;
-pub const SHM_EXEC: ::c_int = 0o100000;
 
 pub const SHM_LOCK: ::c_int = 11;
 pub const SHM_UNLOCK: ::c_int = 12;
 
 pub const SHM_HUGETLB: ::c_int = 0o4000;
+#[cfg(not(all(target_env = "uclibc", target_arch = "mips")))]
 pub const SHM_NORESERVE: ::c_int = 0o10000;
 
 pub const EPOLLRDHUP: ::c_int = 0x2000;
 pub const EPOLLEXCLUSIVE: ::c_int = 0x10000000;
+pub const EPOLLWAKEUP: ::c_int = 0x20000000;
 pub const EPOLLONESHOT: ::c_int = 0x40000000;
 
 pub const QFMT_VFS_OLD: ::c_int = 1;
@@ -1440,14 +1426,28 @@ pub const SYNC_FILE_RANGE_WAIT_BEFORE: ::c_uint = 1;
 pub const SYNC_FILE_RANGE_WRITE: ::c_uint = 2;
 pub const SYNC_FILE_RANGE_WAIT_AFTER: ::c_uint = 4;
 
-pub const AIO_CANCELED: ::c_int = 0;
-pub const AIO_NOTCANCELED: ::c_int = 1;
-pub const AIO_ALLDONE: ::c_int = 2;
-pub const LIO_READ: ::c_int = 0;
-pub const LIO_WRITE: ::c_int = 1;
-pub const LIO_NOP: ::c_int = 2;
-pub const LIO_WAIT: ::c_int = 0;
-pub const LIO_NOWAIT: ::c_int = 1;
+cfg_if! {
+    if #[cfg(not(target_env = "uclibc"))] {
+        pub const AIO_CANCELED: ::c_int = 0;
+        pub const AIO_NOTCANCELED: ::c_int = 1;
+        pub const AIO_ALLDONE: ::c_int = 2;
+        pub const LIO_READ: ::c_int = 0;
+        pub const LIO_WRITE: ::c_int = 1;
+        pub const LIO_NOP: ::c_int = 2;
+        pub const LIO_WAIT: ::c_int = 0;
+        pub const LIO_NOWAIT: ::c_int = 1;
+        pub const RUSAGE_THREAD: ::c_int = 1;
+        pub const TCP_ULP: ::c_int = 31;
+        pub const MSG_COPY: ::c_int = 0o40000;
+        pub const SHM_EXEC: ::c_int = 0o100000;
+        pub const IPV6_MULTICAST_ALL: ::c_int = 29;
+        pub const IPV6_ROUTER_ALERT_ISOLATE: ::c_int = 30;
+        pub const PACKET_MR_UNICAST: ::c_int = 3;
+        pub const PTRACE_EVENT_STOP: ::c_int = 128;
+        pub const UDP_SEGMENT: ::c_int = 103;
+        pub const UDP_GRO: ::c_int = 104;
+    }
+}
 
 pub const MREMAP_MAYMOVE: ::c_int = 1;
 pub const MREMAP_FIXED: ::c_int = 2;
@@ -1610,8 +1610,6 @@ pub const SO_ORIGINAL_DST: ::c_int = 80;
 pub const IP_RECVFRAGSIZE: ::c_int = 25;
 
 pub const IPV6_FLOWINFO: ::c_int = 11;
-pub const IPV6_MULTICAST_ALL: ::c_int = 29;
-pub const IPV6_ROUTER_ALERT_ISOLATE: ::c_int = 30;
 pub const IPV6_FLOWLABEL_MGR: ::c_int = 32;
 pub const IPV6_FLOWINFO_SEND: ::c_int = 33;
 pub const IPV6_RECVFRAGSIZE: ::c_int = 77;
@@ -1623,6 +1621,7 @@ pub const IPV6_RTHDR_LOOSE: ::c_int = 0;
 pub const IPV6_RTHDR_STRICT: ::c_int = 1;
 
 pub const IUTF8: ::tcflag_t = 0x00004000;
+#[cfg(not(all(target_env = "uclibc", target_arch = "mips")))]
 pub const CMSPAR: ::tcflag_t = 0o10000000000;
 
 pub const MFD_CLOEXEC: ::c_uint = 0x0001;
@@ -1941,7 +1940,6 @@ pub const PACKET_DROP_MEMBERSHIP: ::c_int = 2;
 pub const PACKET_MR_MULTICAST: ::c_int = 0;
 pub const PACKET_MR_PROMISC: ::c_int = 1;
 pub const PACKET_MR_ALLMULTI: ::c_int = 2;
-pub const PACKET_MR_UNICAST: ::c_int = 3;
 
 // linux/netfilter.h
 pub const NF_DROP: ::c_int = 0;
@@ -2062,8 +2060,6 @@ pub const SIOCSRARP: ::c_ulong = 0x00008962;
 pub const SIOCGIFMAP: ::c_ulong = 0x00008970;
 pub const SIOCSIFMAP: ::c_ulong = 0x00008971;
 
-pub const PTRACE_EVENT_STOP: ::c_int = 128;
-
 pub const IPTOS_TOS_MASK: u8 = 0x1E;
 pub const IPTOS_PREC_MASK: u8 = 0xE0;
 
@@ -2366,8 +2362,6 @@ pub const UDP_CORK: ::c_int = 1;
 pub const UDP_ENCAP: ::c_int = 100;
 pub const UDP_NO_CHECK6_TX: ::c_int = 101;
 pub const UDP_NO_CHECK6_RX: ::c_int = 102;
-pub const UDP_SEGMENT: ::c_int = 103;
-pub const UDP_GRO: ::c_int = 104;
 
 // include/uapi/linux/mman.h
 pub const MAP_SHARED_VALIDATE: ::c_int = 0x3;
@@ -2507,10 +2501,6 @@ pub const FAN_MARK_ADD: ::c_uint = 0x0000_0001;
 pub const FAN_MARK_REMOVE: ::c_uint = 0x0000_0002;
 pub const FAN_MARK_DONT_FOLLOW: ::c_uint = 0x0000_0004;
 pub const FAN_MARK_ONLYDIR: ::c_uint = 0x0000_0008;
-pub const FAN_MARK_INODE: ::c_uint = 0x0000_0000;
-pub const FAN_MARK_MOUNT: ::c_uint = 0x0000_0010;
-// NOTE: FAN_MARK_FILESYSTEM requires Linux Kernel >= 4.20.0
-pub const FAN_MARK_FILESYSTEM: ::c_uint = 0x0000_0100;
 pub const FAN_MARK_IGNORED_MASK: ::c_uint = 0x0000_0020;
 pub const FAN_MARK_IGNORED_SURV_MODIFY: ::c_uint = 0x0000_0040;
 pub const FAN_MARK_FLUSH: ::c_uint = 0x0000_0080;
@@ -2790,6 +2780,75 @@ f! {
     }
 }
 
+cfg_if! {
+    if #[cfg(not(target_env = "uclibc"))] {
+        extern "C" {
+            pub fn aio_read(aiocbp: *mut aiocb) -> ::c_int;
+            pub fn aio_write(aiocbp: *mut aiocb) -> ::c_int;
+            pub fn aio_fsync(op: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+            pub fn aio_error(aiocbp: *const aiocb) -> ::c_int;
+            pub fn aio_return(aiocbp: *mut aiocb) -> ::ssize_t;
+            pub fn aio_suspend(
+                aiocb_list: *const *const aiocb,
+                nitems: ::c_int,
+                timeout: *const ::timespec,
+            ) -> ::c_int;
+            pub fn aio_cancel(fd: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+            pub fn lio_listio(
+                mode: ::c_int,
+                aiocb_list: *const *mut aiocb,
+                nitems: ::c_int,
+                sevp: *mut ::sigevent,
+            ) -> ::c_int;
+            pub fn pwritev(
+                fd: ::c_int,
+                iov: *const ::iovec,
+                iovcnt: ::c_int,
+                offset: ::off_t,
+            ) -> ::ssize_t;
+            pub fn preadv(
+                fd: ::c_int,
+                iov: *const ::iovec,
+                iovcnt: ::c_int,
+                offset: ::off_t,
+            ) -> ::ssize_t;
+            pub fn getnameinfo(
+                sa: *const ::sockaddr,
+                salen: ::socklen_t,
+                host: *mut ::c_char,
+                hostlen: ::socklen_t,
+                serv: *mut ::c_char,
+                sevlen: ::socklen_t,
+                flags: ::c_int,
+            ) -> ::c_int;
+            pub fn getloadavg(
+                loadavg: *mut ::c_double,
+                nelem: ::c_int
+            ) -> ::c_int;
+            pub fn process_vm_readv(
+                pid: ::pid_t,
+                local_iov: *const ::iovec,
+                liovcnt: ::c_ulong,
+                remote_iov: *const ::iovec,
+                riovcnt: ::c_ulong,
+                flags: ::c_ulong,
+            ) -> isize;
+            pub fn process_vm_writev(
+                pid: ::pid_t,
+                local_iov: *const ::iovec,
+                liovcnt: ::c_ulong,
+                remote_iov: *const ::iovec,
+                riovcnt: ::c_ulong,
+                flags: ::c_ulong,
+            ) -> isize;
+            pub fn futimes(
+                fd: ::c_int,
+                times: *const ::timeval
+            ) -> ::c_int;
+        }
+    }
+}
+
 extern "C" {
     #[cfg_attr(not(target_env = "musl"), link_name = "__xpg_strerror_r")]
     pub fn strerror_r(
@@ -2804,24 +2863,6 @@ extern "C" {
     pub fn rand() -> ::c_int;
     pub fn srand(seed: ::c_uint);
 
-    pub fn aio_read(aiocbp: *mut aiocb) -> ::c_int;
-    pub fn aio_write(aiocbp: *mut aiocb) -> ::c_int;
-    pub fn aio_fsync(op: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
-    pub fn aio_error(aiocbp: *const aiocb) -> ::c_int;
-    pub fn aio_return(aiocbp: *mut aiocb) -> ::ssize_t;
-    pub fn aio_suspend(
-        aiocb_list: *const *const aiocb,
-        nitems: ::c_int,
-        timeout: *const ::timespec,
-    ) -> ::c_int;
-    pub fn aio_cancel(fd: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
-    pub fn lio_listio(
-        mode: ::c_int,
-        aiocb_list: *const *mut aiocb,
-        nitems: ::c_int,
-        sevp: *mut ::sigevent,
-    ) -> ::c_int;
-
     pub fn lutimes(file: *const ::c_char, times: *const ::timeval) -> ::c_int;
 
     pub fn setpwent();
@@ -3020,18 +3061,6 @@ extern "C" {
         new_value: *const itimerspec,
         old_value: *mut itimerspec,
     ) -> ::c_int;
-    pub fn pwritev(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        iovcnt: ::c_int,
-        offset: ::off_t,
-    ) -> ::ssize_t;
-    pub fn preadv(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        iovcnt: ::c_int,
-        offset: ::off_t,
-    ) -> ::ssize_t;
     pub fn quotactl(
         cmd: ::c_int,
         special: *const ::c_char,
@@ -3101,36 +3130,10 @@ extern "C" {
         len: *mut ::socklen_t,
         flg: ::c_int,
     ) -> ::c_int;
-    pub fn getnameinfo(
-        sa: *const ::sockaddr,
-        salen: ::socklen_t,
-        host: *mut ::c_char,
-        hostlen: ::socklen_t,
-        serv: *mut ::c_char,
-        sevlen: ::socklen_t,
-        flags: ::c_int,
-    ) -> ::c_int;
     pub fn pthread_setschedprio(
         native: ::pthread_t,
         priority: ::c_int,
     ) -> ::c_int;
-    pub fn getloadavg(loadavg: *mut ::c_double, nelem: ::c_int) -> ::c_int;
-    pub fn process_vm_readv(
-        pid: ::pid_t,
-        local_iov: *const ::iovec,
-        liovcnt: ::c_ulong,
-        remote_iov: *const ::iovec,
-        riovcnt: ::c_ulong,
-        flags: ::c_ulong,
-    ) -> isize;
-    pub fn process_vm_writev(
-        pid: ::pid_t,
-        local_iov: *const ::iovec,
-        liovcnt: ::c_ulong,
-        remote_iov: *const ::iovec,
-        riovcnt: ::c_ulong,
-        flags: ::c_ulong,
-    ) -> isize;
     pub fn reboot(how_to: ::c_int) -> ::c_int;
     pub fn setfsgid(gid: ::gid_t) -> ::c_int;
     pub fn setfsuid(uid: ::uid_t) -> ::c_int;
@@ -3205,7 +3208,7 @@ extern "C" {
         addrlen: *mut ::socklen_t,
     ) -> ::ssize_t;
     pub fn mkstemps(template: *mut ::c_char, suffixlen: ::c_int) -> ::c_int;
-    pub fn futimes(fd: ::c_int, times: *const ::timeval) -> ::c_int;
+
     pub fn nl_langinfo(item: ::nl_item) -> *mut ::c_char;
 
     pub fn getdomainname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
@@ -3579,7 +3582,10 @@ extern "C" {
 }
 
 cfg_if! {
-    if #[cfg(target_env = "musl")] {
+    if #[cfg(target_env = "uclibc")] {
+        mod uclibc;
+        pub use self::uclibc::*;
+    } else if #[cfg(target_env = "musl")] {
         mod musl;
         pub use self::musl::*;
     } else if #[cfg(target_env = "gnu")] {
diff --git a/src/unix/linux_like/linux/musl/mod.rs b/src/unix/linux_like/linux/musl/mod.rs
index 8aaa41b7045f2..57584e0f7a28e 100644
--- a/src/unix/linux_like/linux/musl/mod.rs
+++ b/src/unix/linux_like/linux/musl/mod.rs
@@ -233,6 +233,19 @@ s! {
         pub e_termination: ::c_short,
         pub e_exit: ::c_short,
     }
+
+    pub struct Elf64_Chdr {
+        pub ch_type: ::Elf64_Word,
+        pub ch_reserved: ::Elf64_Word,
+        pub ch_size: ::Elf64_Xword,
+        pub ch_addralign: ::Elf64_Xword,
+    }
+
+    pub struct Elf32_Chdr {
+        pub ch_type: ::Elf32_Word,
+        pub ch_size: ::Elf32_Word,
+        pub ch_addralign: ::Elf32_Word,
+    }
 }
 
 s_no_extra_traits! {
@@ -481,6 +494,7 @@ pub const EFD_CLOEXEC: ::c_int = 0x80000;
 pub const BUFSIZ: ::c_uint = 1024;
 pub const TMP_MAX: ::c_uint = 10000;
 pub const FOPEN_MAX: ::c_uint = 1000;
+pub const FILENAME_MAX: ::c_uint = 4096;
 pub const O_PATH: ::c_int = 0o10000000;
 pub const O_EXEC: ::c_int = 0o10000000;
 pub const O_SEARCH: ::c_int = 0o10000000;
@@ -552,10 +566,21 @@ pub const PTRACE_INTERRUPT: ::c_int = 0x4207;
 pub const PTRACE_LISTEN: ::c_int = 0x4208;
 pub const PTRACE_PEEKSIGINFO: ::c_int = 0x4209;
 
-pub const EPOLLWAKEUP: ::c_int = 0x20000000;
-
-pub const SEEK_DATA: ::c_int = 3;
-pub const SEEK_HOLE: ::c_int = 4;
+pub const FAN_MARK_INODE: ::c_uint = 0x0000_0000;
+pub const FAN_MARK_MOUNT: ::c_uint = 0x0000_0010;
+// NOTE: FAN_MARK_FILESYSTEM requires Linux Kernel >= 4.20.0
+pub const FAN_MARK_FILESYSTEM: ::c_uint = 0x0000_0100;
+
+pub const AF_IB: ::c_int = 27;
+pub const AF_MPLS: ::c_int = 28;
+pub const AF_NFC: ::c_int = 39;
+pub const AF_VSOCK: ::c_int = 40;
+pub const AF_XDP: ::c_int = 44;
+pub const PF_IB: ::c_int = AF_IB;
+pub const PF_MPLS: ::c_int = AF_MPLS;
+pub const PF_NFC: ::c_int = AF_NFC;
+pub const PF_VSOCK: ::c_int = AF_VSOCK;
+pub const PF_XDP: ::c_int = AF_XDP;
 
 pub const EFD_NONBLOCK: ::c_int = ::O_NONBLOCK;
 
diff --git a/src/unix/linux_like/linux/uclibc/align.rs b/src/unix/linux_like/linux/uclibc/align.rs
new file mode 100644
index 0000000000000..e6610bb7b985c
--- /dev/null
+++ b/src/unix/linux_like/linux/uclibc/align.rs
@@ -0,0 +1,28 @@
+macro_rules! expand_align {
+    () => {
+        s! {
+            #[cfg_attr(any(target_pointer_width = "32",
+                           target_arch = "x86_64",
+                           target_arch = "powerpc64",
+                           target_arch = "mips64",
+                           target_arch = "s390x",
+                           target_arch = "sparc64"),
+                       repr(align(4)))]
+            #[cfg_attr(not(any(target_pointer_width = "32",
+                               target_arch = "x86_64",
+                               target_arch = "powerpc64",
+                               target_arch = "mips64",
+                               target_arch = "s390x",
+                               target_arch = "sparc64")),
+                       repr(align(8)))]
+            pub struct pthread_mutexattr_t {
+                size: [u8; ::__SIZEOF_PTHREAD_MUTEXATTR_T],
+            }
+
+            #[repr(align(4))]
+            pub struct pthread_condattr_t {
+                size: [u8; ::__SIZEOF_PTHREAD_CONDATTR_T],
+            }
+        }
+    };
+}
diff --git a/src/unix/uclibc/arm/align.rs b/src/unix/linux_like/linux/uclibc/arm/align.rs
similarity index 100%
rename from src/unix/uclibc/arm/align.rs
rename to src/unix/linux_like/linux/uclibc/arm/align.rs
diff --git a/src/unix/uclibc/arm/mod.rs b/src/unix/linux_like/linux/uclibc/arm/mod.rs
similarity index 78%
rename from src/unix/uclibc/arm/mod.rs
rename to src/unix/linux_like/linux/uclibc/arm/mod.rs
index 613a11fbab79d..1cafdb61c404e 100644
--- a/src/unix/uclibc/arm/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/arm/mod.rs
@@ -17,6 +17,10 @@ pub type nlink_t = ::c_uint;
 pub type blksize_t = ::c_long;
 pub type blkcnt_t = ::c_long;
 
+pub type fsblkcnt64_t = u64;
+pub type fsfilcnt64_t = u64;
+pub type __u64 = ::c_ulonglong;
+
 s! {
     pub struct cmsghdr {
         pub cmsg_len: ::size_t,
@@ -52,13 +56,13 @@ s! {
         pub st_blksize: ::blksize_t,
         pub st_blocks: ::blkcnt_t,
         pub st_atime: ::time_t,
-        pub st_atime_nsec: ::c_ulong,
+        pub st_atime_nsec: ::c_long,
         pub st_mtime: ::time_t,
-        pub st_mtime_nsec: ::c_ulong,
+        pub st_mtime_nsec: ::c_long,
         pub st_ctime: ::time_t,
-        pub st_ctime_nsec: ::c_ulong,
-        pub __unused4: ::c_ulong,
-        pub __unused5: ::c_ulong,
+        pub st_ctime_nsec: ::c_long,
+        pub __uclibc_unused4: ::c_ulong,
+        pub __uclibc_unused5: ::c_ulong,
     }
 
     pub struct stat64
@@ -76,11 +80,11 @@ s! {
         pub st_blksize: ::blksize_t,
         pub st_blocks: ::blkcnt64_t,
         pub st_atime: ::time_t,
-        pub st_atime_nsec: ::c_ulong,
+        pub st_atime_nsec: ::c_long,
         pub st_mtime: ::time_t,
-        pub st_mtime_nsec: ::c_ulong,
+        pub st_mtime_nsec: ::c_long,
         pub st_ctime: ::time_t,
-        pub st_ctime_nsec: ::c_ulong,
+        pub st_ctime_nsec: ::c_long,
         pub st_ino: ::ino64_t,
     }
 
@@ -92,6 +96,23 @@ s! {
         pub l_pid: ::pid_t,
     }
 
+    pub struct sysinfo {
+        pub uptime: ::c_long,
+        pub loads: [::c_ulong; 3],
+        pub totalram: ::c_ulong,
+        pub freeram: ::c_ulong,
+        pub sharedram: ::c_ulong,
+        pub bufferram: ::c_ulong,
+        pub totalswap: ::c_ulong,
+        pub freeswap: ::c_ulong,
+        pub procs: ::c_ushort,
+        pub pad: ::c_ushort,
+        pub totalhigh: ::c_ulong,
+        pub freehigh: ::c_ulong,
+        pub mem_unit: ::c_uint,
+        pub _f: [::c_char; 8],
+    }
+
     pub struct statfs {
         pub f_type: ::c_int,
         pub f_bsize: ::c_int,
@@ -104,7 +125,39 @@ s! {
         pub f_fsid: ::fsid_t,
         pub f_namelen: ::c_int,
         pub f_frsize: ::c_int,
-        pub f_spare: [::c_int; 5],
+        pub f_flags: ::c_int,
+        pub f_spare: [::c_int; 4],
+    }
+
+    pub struct statfs64 {
+        pub f_type: ::c_int,
+        pub f_bsize: ::c_int,
+        pub f_blocks: ::fsblkcnt64_t,
+        pub f_bfree: ::fsblkcnt64_t,
+        pub f_bavail: ::fsblkcnt64_t,
+        pub f_files: ::fsfilcnt64_t,
+        pub f_ffree: ::fsfilcnt64_t,
+        pub f_fsid: ::fsid_t,
+        pub f_namelen: ::c_int,
+        pub f_frsize: ::c_int,
+        pub f_flags: ::c_int,
+        pub f_spare: [::c_int; 4],
+    }
+
+    pub struct statvfs64 {
+        pub f_bsize: ::c_ulong,
+        pub f_frsize: ::c_ulong,
+        pub f_blocks: u64,
+        pub f_bfree: u64,
+        pub f_bavail: u64,
+        pub f_files: u64,
+        pub f_ffree: u64,
+        pub f_favail: u64,
+        pub f_fsid: ::c_ulong,
+        __f_unused: ::c_int,
+        pub f_flag: ::c_ulong,
+        pub f_namemax: ::c_ulong,
+        __f_spare: [::c_int; 6],
     }
 
     pub struct sigset_t {
@@ -113,10 +166,8 @@ s! {
 
     pub struct sigaction {
         pub sa_sigaction: ::sighandler_t,
-        // uClibc defines sa_flags as `unsigned long int`,
-        // but nix crate expects `int`
-        pub sa_flags: ::c_int,
-        pub sa_restorer: *mut ::c_void,
+        pub sa_flags: ::c_ulong,
+        pub sa_restorer: ::Option<extern fn()>,
         pub sa_mask: sigset_t,
     }
 
@@ -154,49 +205,42 @@ s! {
         pub __pad1: ::c_ushort,
         pub __seq: ::c_ushort,
         pub __pad2: ::c_ushort,
-        pub __unused1: ::c_ulong,
-        pub __unused2: ::c_ulong,
+        pub __uclibc_unused1: ::c_ulong,
+        pub __uclibc_unused2: ::c_ulong,
     }
 
     pub struct msqid_ds {
         pub msg_perm: ::ipc_perm,
         pub msg_stime: ::time_t,
-        pub __unused1: ::c_ulong,
+        pub __uclibc_unused1: ::c_ulong,
         pub msg_rtime: ::time_t,
-        pub __unused2: ::c_ulong,
+        pub __uclibc_unused2: ::c_ulong,
         pub msg_ctime: ::time_t,
-        pub __unused3: ::c_ulong,
+        pub __uclibc_unused3: ::c_ulong,
         pub __msg_cbytes: ::c_ulong,
         pub msg_qnum: ::msgqnum_t,
         pub msg_qbytes: ::msglen_t,
         pub msg_lspid: ::pid_t,
         pub msg_lrpid: ::pid_t,
-        pub __unused4: ::c_ulong,
-        pub __unused5: ::c_ulong,
+        pub __uclibc_unused4: ::c_ulong,
+        pub __uclibc_unused5: ::c_ulong,
     }
 
     pub struct shmid_ds {
         pub shm_perm: ::ipc_perm,
         pub shm_segsz: ::size_t,
         pub shm_atime: ::time_t,
-        pub __unused1: ::c_ulong,
+        pub __uclibc_unused1: ::c_ulong,
         pub shm_dtime: ::time_t,
-        pub __unused2: ::c_ulong,
+        pub __uclibc_unused2: ::c_ulong,
         pub shm_ctime: ::time_t,
-        pub __unused3: ::c_ulong,
+        pub __uclibc_unused3: ::c_ulong,
         pub shm_cpid: ::pid_t,
         pub shm_lpid: ::pid_t,
         pub shm_nattch: ::shmatt_t,
-        pub __unused4: ::c_ulong,
-        pub __unused5: ::c_ulong,
-    }
-
-    pub struct ucred {
-        pub pid: ::pid_t,
-        pub uid: ::uid_t,
-        pub gid: ::gid_t,
+        pub __uclibc_unused4: ::c_ulong,
+        pub __uclibc_unused5: ::c_ulong,
     }
-
 }
 
 pub const O_CLOEXEC: ::c_int = 0o2000000;
@@ -214,33 +258,12 @@ pub const NCCS: usize = 32;
 
 // I wasn't able to find those constants
 // in uclibc build environment for armv7
-pub const AIO_ALLDONE: ::c_int = 2; // from linux/mod.rs
-pub const AIO_CANCELED: ::c_int = 0; // from linux/mod.rs
-pub const AIO_NOTCANCELED: ::c_int = 1; // from linux/mod.rs
-pub const CLONE_NEWCGROUP: ::c_int = 0x02000000; // from linux/mod.rs
-pub const EPOLLEXCLUSIVE: ::c_int = 0x10000000; // from linux/mod.rs
-pub const EPOLLWAKEUP: ::c_int = 0x20000000; // from linux/other/mod.rs
-pub const EXTPROC: ::tcflag_t = 0o200000; // from asm-generic/termbits.h
-pub const F_GETPIPE_SZ: ::c_int = 1032; // from linux_like/mod.rs
-pub const F_SETPIPE_SZ: ::c_int = 1031; // from linux_like/mod.rs
-pub const LIO_NOP: ::c_int = 2; // from linux/mod.rs
-pub const LIO_NOWAIT: ::c_int = 1; // from linux/mod.rs
-pub const LIO_READ: ::c_int = 0; // from linux/mod.rs
-pub const LIO_WAIT: ::c_int = 0; // from linux/mod.rs
-pub const LIO_WRITE: ::c_int = 1; // from linux/mod.rs
 pub const MAP_HUGETLB: ::c_int = 0x040000; // from linux/other/mod.rs
-pub const O_TMPFILE: ::c_int = 0o20000000 | O_DIRECTORY;
-pub const RB_KEXEC: ::c_int = 0x45584543u32 as i32; // from linux/mod.rs
-pub const RB_SW_SUSPEND: ::c_int = 0xd000fce2u32 as i32; // from linux/mod.rs
 pub const SO_BUSY_POLL: ::c_int = 46; // from src/unix/linux_like/mod.rs
 pub const SO_PEEK_OFF: ::c_int = 42; // from src/unix/linux_like/mod.rs
 pub const SO_REUSEPORT: ::c_int = 15; // from src/unix/linux_like/mod.rs
-pub const SOL_NETLINK: ::c_int = 270; // from src/unix/linux_like/mod.rs
-pub const _POSIX_VDISABLE: ::cc_t = 0; // from linux/mod.rs
-pub const AT_EMPTY_PATH: ::c_int = 0x1000; // from linux_like/mod.rs
 
 // autogenerated constants with hand tuned types
-pub const AT_NO_AUTOMOUNT: ::c_int = 0x800;
 pub const B0: ::speed_t = 0;
 pub const B1000000: ::speed_t = 0x1008;
 pub const B110: ::speed_t = 0x3;
@@ -278,7 +301,6 @@ pub const CBAUD: ::tcflag_t = 0x100f;
 pub const CBAUDEX: ::tcflag_t = 0x1000;
 pub const CIBAUD: ::tcflag_t = 0x100f0000;
 pub const CLOCAL: ::tcflag_t = 0x800;
-pub const CMSPAR: ::tcflag_t = 0x40000000;
 pub const CPU_SETSIZE: ::c_int = 0x400;
 pub const CR1: ::c_int = 0x200;
 pub const CR2: ::c_int = 0x400;
@@ -409,7 +431,6 @@ pub const HUPCL: ::tcflag_t = 0x400;
 pub const ICANON: ::tcflag_t = 0x2;
 pub const IEXTEN: ::tcflag_t = 0x8000;
 pub const ISIG: ::tcflag_t = 0x1;
-pub const IUTF8: ::tcflag_t = 0x4000;
 pub const IXOFF: ::tcflag_t = 0x1000;
 pub const IXON: ::tcflag_t = 0x400;
 pub const MAP_ANON: ::c_int = 0x20;
@@ -422,67 +443,45 @@ pub const MAP_NONBLOCK: ::c_int = 0x10000;
 pub const MAP_NORESERVE: ::c_int = 0x4000;
 pub const MAP_POPULATE: ::c_int = 0x8000;
 pub const MAP_STACK: ::c_int = 0x20000;
-pub const MS_ACTIVE: u32 = 0x40000000;
-pub const MS_DIRSYNC: u32 = 0x80;
-pub const MS_I_VERSION: u32 = 0x800000;
-pub const MS_KERNMOUNT: u32 = 0x400000;
-pub const MS_MOVE: u32 = 0x2000;
-pub const MS_POSIXACL: u32 = 0x10000;
-pub const MS_PRIVATE: u32 = 0x40000;
-pub const MS_REC: u32 = 0x4000;
-pub const MS_RELATIME: u32 = 0x200000;
-pub const MS_SHARED: u32 = 0x100000;
-pub const MS_SILENT: u32 = 0x8000;
-pub const MS_SLAVE: u32 = 0x80000;
-pub const MS_STRICTATIME: u32 = 0x1000000;
-pub const MS_UNBINDABLE: u32 = 0x20000;
 pub const NLDLY: ::tcflag_t = 0x100;
 pub const NOFLSH: ::tcflag_t = 0x80;
-pub const OCRNL: ::c_int = 0x8;
-pub const OFDEL: ::c_int = 0x80;
-pub const OFILL: ::c_int = 0x40;
 pub const OLCUC: ::tcflag_t = 0x2;
 pub const ONLCR: ::tcflag_t = 0x4;
-pub const ONLRET: ::tcflag_t = 0x20;
-pub const ONOCR: ::tcflag_t = 0x10;
 pub const O_ACCMODE: ::c_int = 0x3;
 pub const O_APPEND: ::c_int = 0x400;
+pub const O_ASYNC: ::c_int = 0o20000;
 pub const O_CREAT: ::c_int = 0x40;
 pub const O_DIRECT: ::c_int = 0x10000;
 pub const O_DIRECTORY: ::c_int = 0x4000;
-pub const O_DSYNC: ::c_int = 0x1000;
+pub const O_DSYNC: ::c_int = O_SYNC;
 pub const O_EXCL: ::c_int = 0x80;
-pub const O_NDELAY: ::c_int = 0x800;
+pub const O_FSYNC: ::c_int = O_SYNC;
+pub const O_LARGEFILE: ::c_int = 0o400000;
+pub const O_NDELAY: ::c_int = O_NONBLOCK;
+pub const O_NOATIME: ::c_int = 0o1000000;
 pub const O_NOCTTY: ::c_int = 0x100;
 pub const O_NOFOLLOW: ::c_int = 0x8000;
 pub const O_NONBLOCK: ::c_int = 0x800;
+pub const O_PATH: ::c_int = 0o10000000;
+pub const O_RSYNC: ::c_int = O_SYNC;
 pub const O_SYNC: ::c_int = 0o10000;
 pub const O_TRUNC: ::c_int = 0x200;
 pub const PARENB: ::tcflag_t = 0x100;
 pub const PARODD: ::tcflag_t = 0x200;
 pub const PENDIN: ::tcflag_t = 0x4000;
-pub const POLLRDBAND: ::c_short = 0x80;
-pub const POLLRDNORM: ::c_short = 0x40;
 pub const POLLWRBAND: ::c_short = 0x200;
 pub const POLLWRNORM: ::c_short = 0x100;
 pub const PTHREAD_STACK_MIN: ::size_t = 16384;
-pub const QIF_ALL: u32 = 0x3f;
-pub const QIF_BLIMITS: u32 = 0x1;
-pub const QIF_BTIME: u32 = 0x10;
-pub const QIF_ILIMITS: u32 = 0x4;
-pub const QIF_INODES: u32 = 0x8;
-pub const QIF_ITIME: u32 = 0x20;
-pub const QIF_LIMITS: u32 = 0x5;
-pub const QIF_SPACE: u32 = 0x2;
-pub const QIF_TIMES: u32 = 0x30;
-pub const QIF_USAGE: u32 = 0xa;
-pub const SA_NOCLDSTOP: ::c_int = 0x1;
-pub const SA_NOCLDWAIT: ::c_int = 0x2;
-pub const SA_NODEFER: ::c_int = 0x40000000;
-pub const SA_ONSTACK: ::c_int = 0x8000000;
-pub const SA_RESETHAND: ::c_int = 0x80000000;
-pub const SA_RESTART: ::c_int = 0x10000000;
-pub const SA_SIGINFO: ::c_int = 0x4;
+
+// These are typed unsigned to match sigaction
+pub const SA_NOCLDSTOP: ::c_ulong = 0x1;
+pub const SA_NOCLDWAIT: ::c_ulong = 0x2;
+pub const SA_SIGINFO: ::c_ulong = 0x4;
+pub const SA_NODEFER: ::c_ulong = 0x40000000;
+pub const SA_ONSTACK: ::c_ulong = 0x8000000;
+pub const SA_RESETHAND: ::c_ulong = 0x80000000;
+pub const SA_RESTART: ::c_ulong = 0x10000000;
+
 pub const SFD_CLOEXEC: ::c_int = 0x80000;
 pub const SFD_NONBLOCK: ::c_int = 0x800;
 pub const SIGBUS: ::c_int = 0x7;
@@ -529,6 +528,7 @@ pub const SO_PEERCRED: ::c_int = 0x11;
 pub const SO_PRIORITY: ::c_int = 0xc;
 pub const SO_PROTOCOL: ::c_int = 0x26;
 pub const SO_RCVBUF: ::c_int = 0x8;
+pub const SO_RCVBUFFORCE: ::c_int = 33;
 pub const SO_RCVLOWAT: ::c_int = 0x12;
 pub const SO_RCVTIMEO: ::c_int = 0x14;
 pub const SO_REUSEADDR: ::c_int = 0x2;
@@ -562,58 +562,8 @@ pub const VTDLY: ::c_int = 0x4000;
 pub const VTIME: usize = 0x5;
 pub const VWERASE: usize = 0xe;
 pub const XTABS: ::tcflag_t = 0x1800;
-pub const _PC_2_SYMLINKS: ::c_int = 0x14;
-pub const _PC_ALLOC_SIZE_MIN: ::c_int = 0x12;
-pub const _PC_ASYNC_IO: ::c_int = 0xa;
-pub const _PC_FILESIZEBITS: ::c_int = 0xd;
-pub const _PC_PRIO_IO: ::c_int = 0xb;
-pub const _PC_REC_INCR_XFER_SIZE: ::c_int = 0xe;
-pub const _PC_REC_MAX_XFER_SIZE: ::c_int = 0xf;
-pub const _PC_REC_MIN_XFER_SIZE: ::c_int = 0x10;
-pub const _PC_REC_XFER_ALIGN: ::c_int = 0x11;
-pub const _PC_SYMLINK_MAX: ::c_int = 0x13;
-pub const _PC_SYNC_IO: ::c_int = 0x9;
-pub const _SC_2_PBS: ::c_int = 0xa8;
-pub const _SC_2_PBS_ACCOUNTING: ::c_int = 0xa9;
-pub const _SC_2_PBS_CHECKPOINT: ::c_int = 0xaf;
-pub const _SC_2_PBS_LOCATE: ::c_int = 0xaa;
-pub const _SC_2_PBS_MESSAGE: ::c_int = 0xab;
-pub const _SC_2_PBS_TRACK: ::c_int = 0xac;
-pub const _SC_ADVISORY_INFO: ::c_int = 0x84;
-pub const _SC_BARRIERS: ::c_int = 0x85;
-pub const _SC_CLOCK_SELECTION: ::c_int = 0x89;
-pub const _SC_CPUTIME: ::c_int = 0x8a;
-pub const _SC_IPV6: ::c_int = 0xeb;
-pub const _SC_MONOTONIC_CLOCK: ::c_int = 0x95;
-pub const _SC_RAW_SOCKETS: ::c_int = 0xec;
-pub const _SC_READER_WRITER_LOCKS: ::c_int = 0x99;
-pub const _SC_REGEXP: ::c_int = 0x9b;
-pub const _SC_SHELL: ::c_int = 0x9d;
-pub const _SC_SPAWN: ::c_int = 0x9f;
-pub const _SC_SPIN_LOCKS: ::c_int = 0x9a;
-pub const _SC_SPORADIC_SERVER: ::c_int = 0xa0;
-pub const _SC_SS_REPL_MAX: ::c_int = 0xf1;
-pub const _SC_SYMLOOP_MAX: ::c_int = 0xad;
-pub const _SC_THREAD_CPUTIME: ::c_int = 0x8b;
-pub const _SC_THREAD_PROCESS_SHARED: ::c_int = 0x52;
-pub const _SC_THREAD_ROBUST_PRIO_INHERIT: ::c_int = 0xf7;
-pub const _SC_THREAD_ROBUST_PRIO_PROTECT: ::c_int = 0xf8;
-pub const _SC_THREAD_SPORADIC_SERVER: ::c_int = 0xa1;
-pub const _SC_TIMEOUTS: ::c_int = 0xa4;
-pub const _SC_TRACE: ::c_int = 0xb5;
-pub const _SC_TRACE_EVENT_FILTER: ::c_int = 0xb6;
-pub const _SC_TRACE_EVENT_NAME_MAX: ::c_int = 0xf2;
-pub const _SC_TRACE_INHERIT: ::c_int = 0xb7;
-pub const _SC_TRACE_LOG: ::c_int = 0xb8;
-pub const _SC_TRACE_NAME_MAX: ::c_int = 0xf3;
-pub const _SC_TRACE_SYS_MAX: ::c_int = 0xf4;
-pub const _SC_TRACE_USER_EVENT_MAX: ::c_int = 0xf5;
-pub const _SC_TYPED_MEMORY_OBJECTS: ::c_int = 0xa5;
-pub const _SC_V6_ILP32_OFF32: ::c_int = 0xb0;
-pub const _SC_V6_ILP32_OFFBIG: ::c_int = 0xb1;
-pub const _SC_V6_LP64_OFF64: ::c_int = 0xb2;
-pub const _SC_V6_LPBIG_OFFBIG: ::c_int = 0xb3;
-pub const _SC_XOPEN_STREAMS: ::c_int = 0xf6;
+
+pub const MADV_SOFT_OFFLINE: ::c_int = 101;
 
 // Syscall table is copied from src/unix/notbsd/linux/musl/b32/arm.rs
 pub const SYS_restart_syscall: ::c_long = 0;
@@ -967,75 +917,8 @@ pub const SYS_pkey_mprotect: ::c_long = 394;
 pub const SYS_pkey_alloc: ::c_long = 395;
 pub const SYS_pkey_free: ::c_long = 396;
 
-fn CMSG_ALIGN(len: usize) -> usize {
-    len + ::mem::size_of::<usize>() - 1 & !(::mem::size_of::<usize>() - 1)
-}
-
-f! {
-    pub fn CMSG_FIRSTHDR(mhdr: *const msghdr) -> *mut cmsghdr {
-        if (*mhdr).msg_controllen as usize >= ::mem::size_of::<cmsghdr>() {
-            (*mhdr).msg_control as *mut cmsghdr
-        } else {
-            0 as *mut cmsghdr
-        }
-    }
-
-    pub fn CMSG_DATA(cmsg: *const cmsghdr) -> *mut ::c_uchar {
-        cmsg.offset(1) as *mut ::c_uchar
-    }
-
-    pub fn CMSG_SPACE(length: ::c_uint) -> ::c_uint {
-        (CMSG_ALIGN(length as usize) + CMSG_ALIGN(::mem::size_of::<cmsghdr>()))
-            as ::c_uint
-    }
-
-    pub fn CMSG_LEN(length: ::c_uint) -> ::c_uint {
-        CMSG_ALIGN(::mem::size_of::<cmsghdr>()) as ::c_uint + length
-    }
-
-    pub fn CMSG_NXTHDR(mhdr: *const msghdr,
-                       cmsg: *const cmsghdr) -> *mut cmsghdr {
-        if ((*cmsg).cmsg_len as usize) < ::mem::size_of::<cmsghdr>() {
-            return 0 as *mut cmsghdr;
-        };
-        let next = (cmsg as usize +
-                    CMSG_ALIGN((*cmsg).cmsg_len as usize))
-            as *mut cmsghdr;
-        let max = (*mhdr).msg_control as usize
-            + (*mhdr).msg_controllen as usize;
-        if (next.offset(1)) as usize > max ||
-            next as usize + CMSG_ALIGN((*next).cmsg_len as usize) > max
-        {
-            0 as *mut cmsghdr
-        } else {
-            next as *mut cmsghdr
-        }
-    }
-
-}
-
 extern "C" {
     pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
-    pub fn openpty(
-        amaster: *mut ::c_int,
-        aslave: *mut ::c_int,
-        name: *mut ::c_char,
-        termp: *mut termios,
-        winp: *mut ::winsize,
-    ) -> ::c_int;
-    pub fn setns(fd: ::c_int, nstype: ::c_int) -> ::c_int;
-    pub fn pwritev(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        iovcnt: ::c_int,
-        offset: ::off_t,
-    ) -> ::ssize_t;
-    pub fn preadv(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        iovcnt: ::c_int,
-        offset: ::off_t,
-    ) -> ::ssize_t;
 }
 
 cfg_if! {
diff --git a/src/unix/uclibc/arm/no_align.rs b/src/unix/linux_like/linux/uclibc/arm/no_align.rs
similarity index 100%
rename from src/unix/uclibc/arm/no_align.rs
rename to src/unix/linux_like/linux/uclibc/arm/no_align.rs
diff --git a/src/unix/uclibc/mips/mips32/align.rs b/src/unix/linux_like/linux/uclibc/mips/mips32/align.rs
similarity index 100%
rename from src/unix/uclibc/mips/mips32/align.rs
rename to src/unix/linux_like/linux/uclibc/mips/mips32/align.rs
diff --git a/src/unix/uclibc/mips/mips32/mod.rs b/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs
similarity index 95%
rename from src/unix/uclibc/mips/mips32/mod.rs
rename to src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs
index 31bca589ef2be..6b34faeade347 100644
--- a/src/unix/uclibc/mips/mips32/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs
@@ -12,7 +12,10 @@ pub type blksize_t = i32;
 pub type nlink_t = u32;
 pub type fsblkcnt_t = ::c_ulong;
 pub type fsfilcnt_t = ::c_ulong;
-pub type rlim_t = c_ulong;
+pub type rlim_t = ::c_ulong;
+pub type __u64 = ::c_ulonglong;
+pub type fsblkcnt64_t = u64;
+pub type fsfilcnt64_t = u64;
 
 s! {
     pub struct stat {
@@ -61,6 +64,22 @@ s! {
         st_pad5: [::c_long; 14],
     }
 
+    pub struct statvfs64 {
+        pub f_bsize: ::c_ulong,
+        pub f_frsize: ::c_ulong,
+        pub f_blocks: ::fsblkcnt64_t,
+        pub f_bfree: ::fsblkcnt64_t,
+        pub f_bavail: ::fsblkcnt64_t,
+        pub f_files: ::fsfilcnt64_t,
+        pub f_ffree: ::fsfilcnt64_t,
+        pub f_favail: ::fsfilcnt64_t,
+        pub f_fsid: ::c_ulong,
+        pub __f_unused: ::c_int,
+        pub f_flag: ::c_ulong,
+        pub f_namemax: ::c_ulong,
+        pub __f_spare: [::c_int; 6],
+    }
+
     pub struct pthread_attr_t {
         __size: [u32; 9]
     }
@@ -169,6 +188,21 @@ s! {
         f_spare: [::c_long; 6],
     }
 
+    pub struct statfs64 {
+        pub f_type: ::c_long,
+        pub f_bsize: ::c_long,
+        pub f_frsize: ::c_long,
+        pub f_blocks: ::fsblkcnt64_t,
+        pub f_bfree: ::fsblkcnt64_t,
+        pub f_files: ::fsblkcnt64_t,
+        pub f_ffree: ::fsblkcnt64_t,
+        pub f_bavail: ::fsblkcnt64_t,
+        pub f_fsid: ::fsid_t,
+        pub f_namelen: ::c_long,
+        pub f_flags: ::c_long,
+        pub f_spare: [::c_long; 5],
+    }
+
     pub struct msghdr {
         pub msg_name: *mut ::c_void,
         pub msg_namelen: ::socklen_t,
@@ -222,10 +256,14 @@ s! {
     }
 }
 
-pub const __SIZEOF_PTHREAD_CONDATTR_T: usize = 4;
+pub const __SIZEOF_PTHREAD_ATTR_T: usize = 36;
 pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 24;
-pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 32;
 pub const __SIZEOF_PTHREAD_MUTEXATTR_T: usize = 4;
+pub const __SIZEOF_PTHREAD_CONDATTR_T: usize = 4;
+pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 32;
+pub const __SIZEOF_PTHREAD_RWLOCKATTR_T: usize = 8;
+pub const __SIZEOF_PTHREAD_BARRIER_T: usize = 20;
+pub const __SIZEOF_PTHREAD_BARRIERATTR_T: usize = 4;
 
 pub const RLIM_INFINITY: ::rlim_t = 0x7fffffff;
 
@@ -599,7 +637,6 @@ extern "C" {
         newlen: ::size_t,
     ) -> ::c_int;
     pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
-    pub fn backtrace(buf: *mut *mut ::c_void, sz: ::c_int) -> ::c_int;
     pub fn glob64(
         pattern: *const ::c_char,
         flags: ::c_int,
@@ -609,7 +646,6 @@ extern "C" {
         pglob: *mut glob64_t,
     ) -> ::c_int;
     pub fn globfree64(pglob: *mut glob64_t);
-    pub fn ptrace(request: ::c_uint, ...) -> ::c_long;
     pub fn pthread_attr_getaffinity_np(
         attr: *const ::pthread_attr_t,
         cpusetsize: ::size_t,
diff --git a/src/unix/uclibc/mips/mips32/no_align.rs b/src/unix/linux_like/linux/uclibc/mips/mips32/no_align.rs
similarity index 100%
rename from src/unix/uclibc/mips/mips32/no_align.rs
rename to src/unix/linux_like/linux/uclibc/mips/mips32/no_align.rs
diff --git a/src/unix/uclibc/mips/mips64/align.rs b/src/unix/linux_like/linux/uclibc/mips/mips64/align.rs
similarity index 100%
rename from src/unix/uclibc/mips/mips64/align.rs
rename to src/unix/linux_like/linux/uclibc/mips/mips64/align.rs
diff --git a/src/unix/uclibc/mips/mips64/mod.rs b/src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs
similarity index 100%
rename from src/unix/uclibc/mips/mips64/mod.rs
rename to src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs
diff --git a/src/unix/uclibc/mips/mips64/no_align.rs b/src/unix/linux_like/linux/uclibc/mips/mips64/no_align.rs
similarity index 100%
rename from src/unix/uclibc/mips/mips64/no_align.rs
rename to src/unix/linux_like/linux/uclibc/mips/mips64/no_align.rs
diff --git a/src/unix/uclibc/mips/mod.rs b/src/unix/linux_like/linux/uclibc/mips/mod.rs
similarity index 78%
rename from src/unix/uclibc/mips/mod.rs
rename to src/unix/linux_like/linux/uclibc/mips/mod.rs
index de76971ae3e7d..26408ff82ab84 100644
--- a/src/unix/uclibc/mips/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/mips/mod.rs
@@ -28,8 +28,6 @@ pub const SA_RESETHAND: ::c_int = 0x80000000;
 pub const SA_RESTART: ::c_int = 0x10000000;
 pub const SA_NOCLDSTOP: ::c_int = 0x00000001;
 
-pub const EPOLLEXCLUSIVE: ::c_int = 0x10000000; // from linux/mod.rs
-pub const EPOLLWAKEUP: ::c_int = 0x20000000; // from linux/other/mod.rs
 pub const EPOLL_CLOEXEC: ::c_int = 0x80000;
 
 pub const EFD_CLOEXEC: ::c_int = 0x80000;
@@ -37,15 +35,12 @@ pub const EFD_CLOEXEC: ::c_int = 0x80000;
 pub const BUFSIZ: ::c_uint = 4096;
 pub const TMP_MAX: ::c_uint = 238328;
 pub const FOPEN_MAX: ::c_uint = 16;
-pub const POSIX_FADV_DONTNEED: ::c_int = 4;
-pub const POSIX_FADV_NOREUSE: ::c_int = 5;
 pub const POSIX_MADV_DONTNEED: ::c_int = 4;
 pub const _SC_2_C_VERSION: ::c_int = 96;
 pub const O_ACCMODE: ::c_int = 3;
 pub const O_DIRECT: ::c_int = 0x8000;
 pub const O_DIRECTORY: ::c_int = 0x10000;
 pub const O_NOFOLLOW: ::c_int = 0x20000;
-pub const ST_RELATIME: ::c_ulong = 4096;
 pub const NI_MAXHOST: ::socklen_t = 1025;
 
 pub const RLIMIT_NOFILE: ::c_int = 5;
@@ -115,7 +110,6 @@ pub const ENOPROTOOPT: ::c_int = 99;
 pub const EPROTONOSUPPORT: ::c_int = 120;
 pub const ESOCKTNOSUPPORT: ::c_int = 121;
 pub const EOPNOTSUPP: ::c_int = 122;
-pub const ENOTSUP: ::c_int = EOPNOTSUPP;
 pub const EPFNOSUPPORT: ::c_int = 123;
 pub const EAFNOSUPPORT: ::c_int = 124;
 pub const EADDRINUSE: ::c_int = 125;
@@ -204,7 +198,6 @@ pub const SO_DETACH_FILTER: ::c_int = 27;
 pub const SO_GET_FILTER: ::c_int = SO_ATTACH_FILTER;
 pub const SO_PEERNAME: ::c_int = 28;
 pub const SO_TIMESTAMP: ::c_int = 29;
-pub const SCM_TIMESTAMP: ::c_int = SO_TIMESTAMP;
 pub const SO_PEERSEC: ::c_int = 30;
 pub const SO_SNDBUFFORCE: ::c_int = 31;
 pub const SO_RCVBUFFORCE: ::c_int = 33;
@@ -212,8 +205,6 @@ pub const SO_PASSSEC: ::c_int = 34;
 pub const SO_TIMESTAMPNS: ::c_int = 35;
 pub const SCM_TIMESTAMPNS: ::c_int = SO_TIMESTAMPNS;
 pub const SO_MARK: ::c_int = 36;
-pub const SO_TIMESTAMPING: ::c_int = 37;
-pub const SCM_TIMESTAMPING: ::c_int = SO_TIMESTAMPING;
 pub const SO_RXQ_OVFL: ::c_int = 40;
 pub const SO_WIFI_STATUS: ::c_int = 41;
 pub const SCM_WIFI_STATUS: ::c_int = SO_WIFI_STATUS;
@@ -256,40 +247,11 @@ pub const SIG_SETMASK: ::c_int = 3;
 pub const SIG_BLOCK: ::c_int = 0x1;
 pub const SIG_UNBLOCK: ::c_int = 0x2;
 
-pub const POLLRDNORM: ::c_short = 0x040;
 pub const POLLWRNORM: ::c_short = 0x004;
-pub const POLLRDBAND: ::c_short = 0x080;
 pub const POLLWRBAND: ::c_short = 0x100;
 
 pub const PTHREAD_STACK_MIN: ::size_t = 16384;
 
-pub const ADFS_SUPER_MAGIC: ::c_long = 0x0000adf5;
-pub const AFFS_SUPER_MAGIC: ::c_long = 0x0000adff;
-pub const CODA_SUPER_MAGIC: ::c_long = 0x73757245;
-pub const CRAMFS_MAGIC: ::c_long = 0x28cd3d45;
-pub const EFS_SUPER_MAGIC: ::c_long = 0x00414a53;
-pub const EXT2_SUPER_MAGIC: ::c_long = 0x0000ef53;
-pub const EXT3_SUPER_MAGIC: ::c_long = 0x0000ef53;
-pub const EXT4_SUPER_MAGIC: ::c_long = 0x0000ef53;
-pub const HPFS_SUPER_MAGIC: ::c_long = 0xf995e849;
-pub const HUGETLBFS_MAGIC: ::c_long = 0x958458f6;
-pub const ISOFS_SUPER_MAGIC: ::c_long = 0x00009660;
-pub const JFFS2_SUPER_MAGIC: ::c_long = 0x000072b6;
-pub const MINIX_SUPER_MAGIC: ::c_long = 0x0000137f;
-pub const MINIX_SUPER_MAGIC2: ::c_long = 0x0000138f;
-pub const MINIX2_SUPER_MAGIC: ::c_long = 0x00002468;
-pub const MINIX2_SUPER_MAGIC2: ::c_long = 0x00002478;
-pub const MSDOS_SUPER_MAGIC: ::c_long = 0x00004d44;
-pub const NCP_SUPER_MAGIC: ::c_long = 0x0000564c;
-pub const NFS_SUPER_MAGIC: ::c_long = 0x00006969;
-pub const OPENPROM_SUPER_MAGIC: ::c_long = 0x00009fa1;
-pub const PROC_SUPER_MAGIC: ::c_long = 0x00009fa0;
-pub const QNX4_SUPER_MAGIC: ::c_long = 0x0000002f;
-pub const REISERFS_SUPER_MAGIC: ::c_long = 0x52654973;
-pub const SMB_SUPER_MAGIC: ::c_long = 0x0000517b;
-pub const TMPFS_MAGIC: ::c_long = 0x01021994;
-pub const USBDEVICE_SUPER_MAGIC: ::c_long = 0x00009fa2;
-
 pub const VEOF: usize = 16;
 pub const VEOL: usize = 17;
 pub const VEOL2: usize = 6;
@@ -297,37 +259,12 @@ pub const VMIN: usize = 4;
 pub const IEXTEN: ::tcflag_t = 0x00000100;
 pub const TOSTOP: ::tcflag_t = 0x00008000;
 pub const FLUSHO: ::tcflag_t = 0x00002000;
-pub const IUTF8: ::tcflag_t = 0x00004000;
 pub const TCSANOW: ::c_int = 0x540e;
 pub const TCSADRAIN: ::c_int = 0x540f;
 pub const TCSAFLUSH: ::c_int = 0x5410;
 
 pub const CPU_SETSIZE: ::c_int = 0x400;
 
-pub const PTRACE_TRACEME: ::c_uint = 0;
-pub const PTRACE_PEEKTEXT: ::c_uint = 1;
-pub const PTRACE_PEEKDATA: ::c_uint = 2;
-pub const PTRACE_PEEKUSER: ::c_uint = 3;
-pub const PTRACE_POKETEXT: ::c_uint = 4;
-pub const PTRACE_POKEDATA: ::c_uint = 5;
-pub const PTRACE_POKEUSER: ::c_uint = 6;
-pub const PTRACE_CONT: ::c_uint = 7;
-pub const PTRACE_KILL: ::c_uint = 8;
-pub const PTRACE_SINGLESTEP: ::c_uint = 9;
-pub const PTRACE_ATTACH: ::c_uint = 16;
-pub const PTRACE_DETACH: ::c_uint = 17;
-pub const PTRACE_SYSCALL: ::c_uint = 24;
-pub const PTRACE_SETOPTIONS: ::c_uint = 0x4200;
-pub const PTRACE_GETEVENTMSG: ::c_uint = 0x4201;
-pub const PTRACE_GETSIGINFO: ::c_uint = 0x4202;
-pub const PTRACE_SETSIGINFO: ::c_uint = 0x4203;
-pub const PTRACE_GETFPREGS: ::c_uint = 14;
-pub const PTRACE_SETFPREGS: ::c_uint = 15;
-pub const PTRACE_GETFPXREGS: ::c_uint = 18;
-pub const PTRACE_SETFPXREGS: ::c_uint = 19;
-pub const PTRACE_GETREGS: ::c_uint = 12;
-pub const PTRACE_SETREGS: ::c_uint = 13;
-
 pub const EFD_NONBLOCK: ::c_int = 0x80;
 
 pub const F_GETLK: ::c_int = 14;
@@ -370,28 +307,9 @@ pub const TIOCMSET: ::c_ulong = 0x741a;
 pub const FIONREAD: ::c_ulong = 0x467f;
 pub const TIOCCONS: ::c_ulong = 0x80047478;
 
-pub const RTLD_DEEPBIND: ::c_int = 0x10;
 pub const RTLD_GLOBAL: ::c_int = 0x4;
 pub const RTLD_NOLOAD: ::c_int = 0x8;
 
-pub const LINUX_REBOOT_MAGIC1: ::c_int = 0xfee1dead;
-pub const LINUX_REBOOT_MAGIC2: ::c_int = 672274793;
-pub const LINUX_REBOOT_MAGIC2A: ::c_int = 85072278;
-pub const LINUX_REBOOT_MAGIC2B: ::c_int = 369367448;
-pub const LINUX_REBOOT_MAGIC2C: ::c_int = 537993216;
-
-pub const LINUX_REBOOT_CMD_RESTART: ::c_int = 0x01234567;
-pub const LINUX_REBOOT_CMD_HALT: ::c_int = 0xCDEF0123;
-pub const LINUX_REBOOT_CMD_CAD_ON: ::c_int = 0x89ABCDEF;
-pub const LINUX_REBOOT_CMD_CAD_OFF: ::c_int = 0x00000000;
-pub const LINUX_REBOOT_CMD_POWER_OFF: ::c_int = 0x4321FEDC;
-pub const LINUX_REBOOT_CMD_RESTART2: ::c_int = 0xA1B2C3D4;
-pub const LINUX_REBOOT_CMD_SW_SUSPEND: ::c_int = 0xD000FCE2;
-pub const LINUX_REBOOT_CMD_KEXEC: ::c_int = 0x45584543;
-
-pub const MCL_CURRENT: ::c_int = 0x0001;
-pub const MCL_FUTURE: ::c_int = 0x0002;
-
 pub const SIGSTKSZ: ::size_t = 8192;
 pub const CBAUD: ::tcflag_t = 0o0010017;
 pub const TAB1: ::tcflag_t = 0x00000800;
diff --git a/src/unix/linux_like/linux/uclibc/mod.rs b/src/unix/linux_like/linux/uclibc/mod.rs
new file mode 100644
index 0000000000000..a86d18ccddd3f
--- /dev/null
+++ b/src/unix/linux_like/linux/uclibc/mod.rs
@@ -0,0 +1,304 @@
+pub type shmatt_t = ::c_ulong;
+pub type msgqnum_t = ::c_ulong;
+pub type msglen_t = ::c_ulong;
+pub type regoff_t = ::c_int;
+
+s! {
+    pub struct statvfs {  // Different than GNU!
+        pub f_bsize: ::c_ulong,
+        pub f_frsize: ::c_ulong,
+        pub f_blocks: ::fsblkcnt_t,
+        pub f_bfree: ::fsblkcnt_t,
+        pub f_bavail: ::fsblkcnt_t,
+        pub f_files: ::fsfilcnt_t,
+        pub f_ffree: ::fsfilcnt_t,
+        pub f_favail: ::fsfilcnt_t,
+        #[cfg(target_endian = "little")]
+        pub f_fsid: ::c_ulong,
+        #[cfg(target_pointer_width = "32")]
+        __f_unused: ::c_int,
+        #[cfg(target_endian = "big")]
+        pub f_fsid: ::c_ulong,
+        pub f_flag: ::c_ulong,
+        pub f_namemax: ::c_ulong,
+        __f_spare: [::c_int; 6],
+    }
+
+    pub struct regex_t {
+        __buffer: *mut ::c_void,
+        __allocated: ::size_t,
+        __used: ::size_t,
+        __syntax: ::c_ulong,
+        __fastmap: *mut ::c_char,
+        __translate: *mut ::c_char,
+        __re_nsub: ::size_t,
+        __bitfield: u8,
+    }
+}
+
+pub const MCL_CURRENT: ::c_int = 0x0001;
+pub const MCL_FUTURE: ::c_int = 0x0002;
+
+pub const SIGEV_THREAD_ID: ::c_int = 4;
+
+pub const ADFS_SUPER_MAGIC: ::c_long = 0x0000adf5;
+pub const AFFS_SUPER_MAGIC: ::c_long = 0x0000adff;
+pub const AFS_SUPER_MAGIC: ::c_long = 0x5346414f;
+pub const AUTOFS_SUPER_MAGIC: ::c_long = 0x0187;
+pub const BINDERFS_SUPER_MAGIC: ::c_long = 0x6c6f6f70;
+pub const BPF_FS_MAGIC: ::c_long = 0xcafe4a11;
+pub const BTRFS_SUPER_MAGIC: ::c_long = 0x9123683e;
+pub const CGROUP2_SUPER_MAGIC: ::c_long = 0x63677270;
+pub const CGROUP_SUPER_MAGIC: ::c_long = 0x27e0eb;
+pub const CODA_SUPER_MAGIC: ::c_long = 0x73757245;
+pub const CRAMFS_MAGIC: ::c_long = 0x28cd3d45;
+pub const DEBUGFS_MAGIC: ::c_long = 0x64626720;
+pub const DEVPTS_SUPER_MAGIC: ::c_long = 0x1cd1;
+pub const ECRYPTFS_SUPER_MAGIC: ::c_long = 0xf15f;
+pub const EFS_SUPER_MAGIC: ::c_long = 0x00414a53;
+pub const EXT2_SUPER_MAGIC: ::c_long = 0x0000ef53;
+pub const EXT3_SUPER_MAGIC: ::c_long = 0x0000ef53;
+pub const EXT4_SUPER_MAGIC: ::c_long = 0x0000ef53;
+pub const F2FS_SUPER_MAGIC: ::c_long = 0xf2f52010;
+pub const FUTEXFS_SUPER_MAGIC: ::c_long = 0xbad1dea;
+pub const HOSTFS_SUPER_MAGIC: ::c_long = 0x00c0ffee;
+pub const HPFS_SUPER_MAGIC: ::c_long = 0xf995e849;
+pub const HUGETLBFS_MAGIC: ::c_long = 0x958458f6;
+pub const ISOFS_SUPER_MAGIC: ::c_long = 0x00009660;
+pub const JFFS2_SUPER_MAGIC: ::c_long = 0x000072b6;
+pub const MINIX2_SUPER_MAGIC2: ::c_long = 0x00002478;
+pub const MINIX2_SUPER_MAGIC: ::c_long = 0x00002468;
+pub const MINIX3_SUPER_MAGIC: ::c_long = 0x4d5a;
+pub const MINIX_SUPER_MAGIC2: ::c_long = 0x0000138f;
+pub const MINIX_SUPER_MAGIC: ::c_long = 0x0000137f;
+pub const MSDOS_SUPER_MAGIC: ::c_long = 0x00004d44;
+pub const NCP_SUPER_MAGIC: ::c_long = 0x0000564c;
+pub const NFS_SUPER_MAGIC: ::c_long = 0x00006969;
+pub const NILFS_SUPER_MAGIC: ::c_long = 0x3434;
+pub const OCFS2_SUPER_MAGIC: ::c_long = 0x7461636f;
+pub const OPENPROM_SUPER_MAGIC: ::c_long = 0x00009fa1;
+pub const OVERLAYFS_SUPER_MAGIC: ::c_long = 0x794c7630;
+pub const PROC_SUPER_MAGIC: ::c_long = 0x00009fa0;
+pub const QNX4_SUPER_MAGIC: ::c_long = 0x0000002f;
+pub const QNX6_SUPER_MAGIC: ::c_long = 0x68191122;
+pub const RDTGROUP_SUPER_MAGIC: ::c_long = 0x7655821;
+pub const REISERFS_SUPER_MAGIC: ::c_long = 0x52654973;
+pub const SMB_SUPER_MAGIC: ::c_long = 0x0000517b;
+pub const SYSFS_MAGIC: ::c_long = 0x62656572;
+pub const TMPFS_MAGIC: ::c_long = 0x01021994;
+pub const TRACEFS_MAGIC: ::c_long = 0x74726163;
+pub const UDF_SUPER_MAGIC: ::c_long = 0x15013346;
+pub const USBDEVICE_SUPER_MAGIC: ::c_long = 0x00009fa2;
+pub const XENFS_SUPER_MAGIC: ::c_long = 0xabba1974;
+pub const XFS_SUPER_MAGIC: ::c_long = 0x58465342;
+
+pub const PTRACE_TRACEME: ::c_int = 0;
+pub const PTRACE_PEEKTEXT: ::c_int = 1;
+pub const PTRACE_PEEKDATA: ::c_int = 2;
+pub const PTRACE_PEEKUSER: ::c_int = 3;
+pub const PTRACE_POKETEXT: ::c_int = 4;
+pub const PTRACE_POKEDATA: ::c_int = 5;
+pub const PTRACE_POKEUSER: ::c_int = 6;
+pub const PTRACE_CONT: ::c_int = 7;
+pub const PTRACE_KILL: ::c_int = 8;
+pub const PTRACE_SINGLESTEP: ::c_int = 9;
+pub const PTRACE_GETREGS: ::c_int = 12;
+pub const PTRACE_SETREGS: ::c_int = 13;
+pub const PTRACE_GETFPREGS: ::c_int = 14;
+pub const PTRACE_SETFPREGS: ::c_int = 15;
+pub const PTRACE_ATTACH: ::c_int = 16;
+pub const PTRACE_DETACH: ::c_int = 17;
+pub const PTRACE_GETFPXREGS: ::c_int = 18;
+pub const PTRACE_SETFPXREGS: ::c_int = 19;
+pub const PTRACE_SYSCALL: ::c_int = 24;
+pub const PTRACE_SETOPTIONS: ::c_int = 0x4200;
+pub const PTRACE_GETEVENTMSG: ::c_int = 0x4201;
+pub const PTRACE_GETSIGINFO: ::c_int = 0x4202;
+pub const PTRACE_SETSIGINFO: ::c_int = 0x4203;
+pub const PTRACE_GETREGSET: ::c_int = 0x4204;
+pub const PTRACE_SETREGSET: ::c_int = 0x4205;
+pub const PTRACE_SEIZE: ::c_int = 0x4206;
+pub const PTRACE_INTERRUPT: ::c_int = 0x4207;
+pub const PTRACE_LISTEN: ::c_int = 0x4208;
+pub const PTRACE_O_MASK: ::c_int = 0x000000ff;
+
+pub const POSIX_FADV_DONTNEED: ::c_int = 4;
+pub const POSIX_FADV_NOREUSE: ::c_int = 5;
+
+pub const RLIMIT_CPU: ::c_int = 0;
+pub const RLIMIT_FSIZE: ::c_int = 1;
+pub const RLIMIT_DATA: ::c_int = 2;
+pub const RLIMIT_STACK: ::c_int = 3;
+pub const RLIMIT_CORE: ::c_int = 4;
+pub const RLIMIT_LOCKS: ::c_int = 10;
+pub const RLIMIT_SIGPENDING: ::c_int = 11;
+pub const RLIMIT_MSGQUEUE: ::c_int = 12;
+pub const RLIMIT_NICE: ::c_int = 13;
+pub const RLIMIT_RTPRIO: ::c_int = 14;
+
+// These are different than GNU!
+pub const LC_CTYPE: ::c_int = 0;
+pub const LC_NUMERIC: ::c_int = 1;
+pub const LC_TIME: ::c_int = 3;
+pub const LC_COLLATE: ::c_int = 4;
+pub const LC_MONETARY: ::c_int = 2;
+pub const LC_MESSAGES: ::c_int = 5;
+pub const LC_ALL: ::c_int = 6;
+// end different section
+
+// MS_ flags for mount(2)
+pub const MS_RMT_MASK: ::c_ulong = ::MS_RDONLY|::MS_SYNCHRONOUS|
+                                   ::MS_MANDLOCK|::MS_I_VERSION;
+
+pub const ENOTSUP: ::c_int = EOPNOTSUPP;
+
+pub const IPV6_JOIN_GROUP: ::c_int = 20;
+pub const IPV6_LEAVE_GROUP: ::c_int = 21;
+
+// These are different from GNU
+pub const ABDAY_1: ::nl_item = 0x300;
+pub const ABDAY_2: ::nl_item = 0x301;
+pub const ABDAY_3: ::nl_item = 0x302;
+pub const ABDAY_4: ::nl_item = 0x303;
+pub const ABDAY_5: ::nl_item = 0x304;
+pub const ABDAY_6: ::nl_item = 0x305;
+pub const ABDAY_7: ::nl_item = 0x306;
+pub const DAY_1: ::nl_item = 0x307;
+pub const DAY_2: ::nl_item = 0x308;
+pub const DAY_3: ::nl_item = 0x309;
+pub const DAY_4: ::nl_item = 0x30A;
+pub const DAY_5: ::nl_item = 0x30B;
+pub const DAY_6: ::nl_item = 0x30C;
+pub const DAY_7: ::nl_item = 0x30D;
+pub const ABMON_1: ::nl_item = 0x30E;
+pub const ABMON_2: ::nl_item = 0x30F;
+pub const ABMON_3: ::nl_item = 0x310;
+pub const ABMON_4: ::nl_item = 0x311;
+pub const ABMON_5: ::nl_item = 0x312;
+pub const ABMON_6: ::nl_item = 0x313;
+pub const ABMON_7: ::nl_item = 0x314;
+pub const ABMON_8: ::nl_item = 0x315;
+pub const ABMON_9: ::nl_item = 0x316;
+pub const ABMON_10: ::nl_item = 0x317;
+pub const ABMON_11: ::nl_item = 0x318;
+pub const ABMON_12: ::nl_item = 0x319;
+pub const MON_1: ::nl_item = 0x31A;
+pub const MON_2: ::nl_item = 0x31B;
+pub const MON_3: ::nl_item = 0x31C;
+pub const MON_4: ::nl_item = 0x31D;
+pub const MON_5: ::nl_item = 0x31E;
+pub const MON_6: ::nl_item = 0x31F;
+pub const MON_7: ::nl_item = 0x320;
+pub const MON_8: ::nl_item = 0x321;
+pub const MON_9: ::nl_item = 0x322;
+pub const MON_10: ::nl_item = 0x323;
+pub const MON_11: ::nl_item = 0x324;
+pub const MON_12: ::nl_item = 0x325;
+pub const AM_STR: ::nl_item = 0x326;
+pub const PM_STR: ::nl_item = 0x327;
+pub const D_T_FMT: ::nl_item = 0x328;
+pub const D_FMT: ::nl_item = 0x329;
+pub const T_FMT: ::nl_item = 0x32A;
+pub const T_FMT_AMPM: ::nl_item = 0x32B;
+pub const ERA: ::nl_item = 0x32C;
+pub const ERA_D_FMT: ::nl_item = 0x32E;
+pub const ALT_DIGITS: ::nl_item = 0x32F;
+pub const ERA_D_T_FMT: ::nl_item = 0x330;
+pub const ERA_T_FMT: ::nl_item = 0x331;
+pub const CODESET: ::nl_item = 10;
+pub const CRNCYSTR: ::nl_item = 0x215;
+pub const RADIXCHAR: ::nl_item = 0x100;
+pub const THOUSEP: ::nl_item = 0x101;
+pub const NOEXPR: ::nl_item = 0x501;
+pub const YESSTR: ::nl_item = 0x502;
+pub const NOSTR: ::nl_item = 0x503;
+
+// Different than Gnu.
+pub const FILENAME_MAX: ::c_uint = 4095;
+
+pub const PRIO_PROCESS: ::c_int = 0;
+pub const PRIO_PGRP: ::c_int = 1;
+pub const PRIO_USER: ::c_int = 2;
+
+pub const ST_RELATIME: ::c_ulong = 4096;
+
+extern "C" {
+    pub fn gettimeofday(tp: *mut ::timeval, tz: *mut ::timezone) -> ::c_int;
+
+    pub fn pthread_rwlockattr_getkind_np(
+        attr: *const ::pthread_rwlockattr_t,
+        val: *mut ::c_int,
+    ) -> ::c_int;
+    pub fn pthread_rwlockattr_setkind_np(
+        attr: *mut ::pthread_rwlockattr_t,
+        val: ::c_int,
+    ) -> ::c_int;
+
+    pub fn ptrace(request: ::c_uint, ...) -> ::c_long;
+
+    pub fn sendmmsg(
+        sockfd: ::c_int,
+        msgvec: *mut ::mmsghdr,
+        vlen: ::c_uint,
+        flags: ::c_int,
+    ) -> ::c_int;
+    pub fn recvmmsg(
+        sockfd: ::c_int,
+        msgvec: *mut ::mmsghdr,
+        vlen: ::c_uint,
+        flags: ::c_int,
+        timeout: *mut ::timespec,
+    ) -> ::c_int;
+
+    pub fn openpty(
+        amaster: *mut ::c_int,
+        aslave: *mut ::c_int,
+        name: *mut ::c_char,
+        termp: *mut termios,
+        winp: *mut ::winsize,
+    ) -> ::c_int;
+    pub fn forkpty(
+        amaster: *mut ::c_int,
+        name: *mut ::c_char,
+        termp: *mut termios,
+        winp: *mut ::winsize,
+    ) -> ::pid_t;
+
+    pub fn getnameinfo(
+        sa: *const ::sockaddr,
+        salen: ::socklen_t,
+        host: *mut ::c_char,
+        hostlen: ::socklen_t,
+        serv: *mut ::c_char,
+        sevlen: ::socklen_t,
+        flags: ::c_int,
+    ) -> ::c_int;
+
+    pub fn pwritev(
+        fd: ::c_int,
+        iov: *const ::iovec,
+        iovcnt: ::c_int,
+        offset: ::off64_t,
+    ) -> ::ssize_t;
+    pub fn preadv(
+        fd: ::c_int,
+        iov: *const ::iovec,
+        iovcnt: ::c_int,
+        offset: ::off64_t,
+    ) -> ::ssize_t;
+}
+
+cfg_if! {
+    if #[cfg(any(target_arch = "mips", target_arch = "mips64"))] {
+        mod mips;
+        pub use self::mips::*;
+    } else if #[cfg(target_arch = "x86_64")] {
+        mod x86_64;
+        pub use self::x86_64::*;
+    } else if #[cfg(target_arch = "arm")] {
+        mod arm;
+        pub use self::arm::*;
+    } else {
+        pub use unsupported_target;
+    }
+}
diff --git a/src/unix/uclibc/no_align.rs b/src/unix/linux_like/linux/uclibc/no_align.rs
similarity index 100%
rename from src/unix/uclibc/no_align.rs
rename to src/unix/linux_like/linux/uclibc/no_align.rs
diff --git a/src/unix/uclibc/x86_64/l4re.rs b/src/unix/linux_like/linux/uclibc/x86_64/l4re.rs
similarity index 100%
rename from src/unix/uclibc/x86_64/l4re.rs
rename to src/unix/linux_like/linux/uclibc/x86_64/l4re.rs
diff --git a/src/unix/uclibc/x86_64/mod.rs b/src/unix/linux_like/linux/uclibc/x86_64/mod.rs
similarity index 84%
rename from src/unix/uclibc/x86_64/mod.rs
rename to src/unix/linux_like/linux/uclibc/x86_64/mod.rs
index 26eca9e7ea09d..80c95833723a5 100644
--- a/src/unix/uclibc/x86_64/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/x86_64/mod.rs
@@ -12,13 +12,16 @@ pub type ino_t = ::c_ulong;
 pub type nlink_t = ::c_uint;
 pub type off_t = ::c_long;
 pub type rlim_t = c_ulong;
-pub type rlim64_t = u64;
 // [uClibc docs] Note stat64 has the same shape as stat for x86-64.
 pub type stat64 = stat;
 pub type suseconds_t = ::c_long;
 pub type time_t = ::c_int;
 pub type wchar_t = ::c_int;
 
+pub type fsblkcnt64_t = u64;
+pub type fsfilcnt64_t = u64;
+pub type __u64 = ::c_ulong;
+
 s! {
     pub struct ipc_perm {
         pub __key: ::key_t,
@@ -143,7 +146,7 @@ s! {
     pub struct sigaction {
         pub sa_handler: ::sighandler_t,
         pub sa_flags: ::c_ulong,
-        pub sa_restorer: *mut ::c_void,
+        pub sa_restorer: ::Option<extern fn()>,
         pub sa_mask: ::sigset_t,
     }
 
@@ -167,6 +170,37 @@ s! {
         f_spare: [fsword_t; 5],
     }
 
+    pub struct statfs64 {
+        pub f_type: ::c_int,
+        pub f_bsize: ::c_int,
+        pub f_blocks: ::fsblkcnt64_t,
+        pub f_bfree: ::fsblkcnt64_t,
+        pub f_bavail: ::fsblkcnt64_t,
+        pub f_files: ::fsfilcnt64_t,
+        pub f_ffree: ::fsfilcnt64_t,
+        pub f_fsid: ::fsid_t,
+        pub f_namelen: ::c_int,
+        pub f_frsize: ::c_int,
+        pub f_flags: ::c_int,
+        pub f_spare: [::c_int; 4],
+    }
+
+    pub struct statvfs64 {
+        pub f_bsize: ::c_ulong,
+        pub f_frsize: ::c_ulong,
+        pub f_blocks: u64,
+        pub f_bfree: u64,
+        pub f_bavail: u64,
+        pub f_files: u64,
+        pub f_ffree: u64,
+        pub f_favail: u64,
+        pub f_fsid: ::c_ulong,
+        __f_unused: ::c_int,
+        pub f_flag: ::c_ulong,
+        pub f_namemax: ::c_ulong,
+        __f_spare: [::c_int; 6],
+    }
+
     pub struct msghdr { // FIXME
         pub msg_name: *mut ::c_void,
         pub msg_namelen: ::socklen_t,
@@ -219,11 +253,6 @@ s! {
         __unused5: *mut ::c_void,
     }
 
-    pub struct rlimit64 { // FIXME
-        pub rlim_cur: rlim64_t,
-        pub rlim_max: rlim64_t,
-    }
-
     pub struct cpu_set_t { // FIXME
         #[cfg(target_pointer_width = "32")]
         bits: [u32; 32],
@@ -234,6 +263,21 @@ s! {
     pub struct fsid_t { // FIXME
         __val: [::c_int; 2],
     }
+
+    // FIXME this is actually a union
+    pub struct sem_t {
+        #[cfg(target_pointer_width = "32")]
+        __size: [::c_char; 16],
+        #[cfg(target_pointer_width = "64")]
+        __size: [::c_char; 32],
+        __align: [::c_long; 0],
+    }
+
+    pub struct cmsghdr {
+        pub cmsg_len: ::size_t,
+        pub cmsg_level: ::c_int,
+        pub cmsg_type: ::c_int,
+    }
 }
 
 s_no_extra_traits! {
@@ -245,14 +289,6 @@ s_no_extra_traits! {
         pub d_type: u8,
         pub d_name: [::c_char; 256],
     }
-    #[allow(missing_debug_implementations)]
-    pub struct dirent64 {
-        pub d_ino: ::ino64_t,
-        pub d_off: ::off64_t,
-        pub d_reclen: u16,
-        pub d_type: u8,
-        pub d_name: [::c_char; 256],
-    }
 }
 
 // constants
@@ -265,6 +301,8 @@ pub const EDEADLK: ::c_int = 35; // Resource deadlock would occur
 pub const ENOSYS: ::c_int = 38; // Function not implemented
 pub const ENOTCONN: ::c_int = 107; // Transport endpoint is not connected
 pub const ETIMEDOUT: ::c_int = 110; // connection timed out
+pub const EOPNOTSUPP: ::c_int = 0x5f;
+pub const ENODATA: ::c_int = 0x3d;
 pub const O_APPEND: ::c_int = 02000;
 pub const O_ACCMODE: ::c_int = 0003;
 pub const O_CLOEXEC: ::c_int = 0x80000;
@@ -285,10 +323,12 @@ pub const SOL_SOCKET: ::c_int = 1;
 pub const SO_RCVTIMEO: ::c_int = 20;
 pub const SO_REUSEADDR: ::c_int = 2;
 pub const SO_SNDTIMEO: ::c_int = 21;
+pub const SO_TIMESTAMP: ::c_int = 0x1d;
 pub const RLIM_INFINITY: u64 = 0xffffffffffffffff;
 pub const __SIZEOF_PTHREAD_COND_T: usize = 48;
 pub const __SIZEOF_PTHREAD_CONDATTR_T: usize = 4;
 pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 56;
+pub const __SIZEOF_PTHREAD_RWLOCKATTR_T: usize = 8;
 
 cfg_if! {
     if #[cfg(target_os = "l4re")] {
@@ -299,14 +339,3 @@ cfg_if! {
         pub use other::*;
     }
 }
-
-cfg_if! {
-    if #[cfg(libc_align)] {
-        #[macro_use]
-        mod align;
-    } else {
-        #[macro_use]
-        mod no_align;
-    }
-}
-expand_align!();
diff --git a/src/unix/uclibc/x86_64/other.rs b/src/unix/linux_like/linux/uclibc/x86_64/other.rs
similarity index 100%
rename from src/unix/uclibc/x86_64/other.rs
rename to src/unix/linux_like/linux/uclibc/x86_64/other.rs
diff --git a/src/unix/linux_like/mod.rs b/src/unix/linux_like/mod.rs
index d5299b2c38908..2a1b95f10adf0 100644
--- a/src/unix/linux_like/mod.rs
+++ b/src/unix/linux_like/mod.rs
@@ -546,13 +546,18 @@ pub const PROT_READ: ::c_int = 1;
 pub const PROT_WRITE: ::c_int = 2;
 pub const PROT_EXEC: ::c_int = 4;
 
-pub const LC_CTYPE: ::c_int = 0;
-pub const LC_NUMERIC: ::c_int = 1;
-pub const LC_TIME: ::c_int = 2;
-pub const LC_COLLATE: ::c_int = 3;
-pub const LC_MONETARY: ::c_int = 4;
-pub const LC_MESSAGES: ::c_int = 5;
-pub const LC_ALL: ::c_int = 6;
+cfg_if! {
+    if #[cfg(not(target_env = "uclibc"))] {
+        pub const LC_CTYPE: ::c_int = 0;
+        pub const LC_NUMERIC: ::c_int = 1;
+        pub const LC_TIME: ::c_int = 2;
+        pub const LC_COLLATE: ::c_int = 3;
+        pub const LC_MONETARY: ::c_int = 4;
+        pub const LC_MESSAGES: ::c_int = 5;
+        pub const LC_ALL: ::c_int = 6;
+    }
+}
+
 pub const LC_CTYPE_MASK: ::c_int = 1 << LC_CTYPE;
 pub const LC_NUMERIC_MASK: ::c_int = 1 << LC_NUMERIC;
 pub const LC_TIME_MASK: ::c_int = 1 << LC_TIME;
@@ -855,7 +860,6 @@ pub const IPPROTO_NONE: ::c_int = 59;
 /// IP6 destination option
 pub const IPPROTO_DSTOPTS: ::c_int = 60;
 pub const IPPROTO_MTP: ::c_int = 92;
-pub const IPPROTO_BEETPH: ::c_int = 94;
 /// encapsulation header
 pub const IPPROTO_ENCAP: ::c_int = 98;
 /// Protocol indep. multicast
@@ -866,7 +870,6 @@ pub const IPPROTO_COMP: ::c_int = 108;
 pub const IPPROTO_SCTP: ::c_int = 132;
 pub const IPPROTO_MH: ::c_int = 135;
 pub const IPPROTO_UDPLITE: ::c_int = 136;
-pub const IPPROTO_MPLS: ::c_int = 137;
 /// raw IP packet
 pub const IPPROTO_RAW: ::c_int = 255;
 
@@ -905,7 +908,6 @@ pub const IPV6_JOIN_ANYCAST: ::c_int = 27;
 pub const IPV6_LEAVE_ANYCAST: ::c_int = 28;
 pub const IPV6_IPSEC_POLICY: ::c_int = 34;
 pub const IPV6_XFRM_POLICY: ::c_int = 35;
-pub const IPV6_HDRINCL: ::c_int = 36;
 pub const IPV6_RECVPKTINFO: ::c_int = 49;
 pub const IPV6_PKTINFO: ::c_int = 50;
 pub const IPV6_RECVHOPLIMIT: ::c_int = 51;
@@ -941,8 +943,6 @@ pub const IPV6_PMTUDISC_DONT: ::c_int = 0;
 pub const IPV6_PMTUDISC_WANT: ::c_int = 1;
 pub const IPV6_PMTUDISC_DO: ::c_int = 2;
 pub const IPV6_PMTUDISC_PROBE: ::c_int = 3;
-pub const IPV6_PMTUDISC_INTERFACE: ::c_int = 4;
-pub const IPV6_PMTUDISC_OMIT: ::c_int = 5;
 
 pub const TCP_NODELAY: ::c_int = 1;
 pub const TCP_MAXSEG: ::c_int = 2;
@@ -1081,7 +1081,6 @@ pub const CLONE_NEWUSER: ::c_int = 0x10000000;
 pub const CLONE_NEWPID: ::c_int = 0x20000000;
 pub const CLONE_NEWNET: ::c_int = 0x40000000;
 pub const CLONE_IO: ::c_int = 0x80000000;
-pub const CLONE_NEWCGROUP: ::c_int = 0x02000000;
 
 pub const WNOHANG: ::c_int = 0x00000001;
 pub const WUNTRACED: ::c_int = 0x00000002;
@@ -1091,15 +1090,11 @@ pub const WCONTINUED: ::c_int = 0x00000008;
 pub const WNOWAIT: ::c_int = 0x01000000;
 
 // Options for personality(2).
-pub const ADDR_NO_RANDOMIZE: ::c_int = 0x0040000;
 pub const MMAP_PAGE_ZERO: ::c_int = 0x0100000;
-pub const ADDR_COMPAT_LAYOUT: ::c_int = 0x0200000;
-pub const READ_IMPLIES_EXEC: ::c_int = 0x0400000;
 pub const ADDR_LIMIT_32BIT: ::c_int = 0x0800000;
 pub const SHORT_INODE: ::c_int = 0x1000000;
 pub const WHOLE_SECONDS: ::c_int = 0x2000000;
 pub const STICKY_TIMEOUTS: ::c_int = 0x4000000;
-pub const ADDR_LIMIT_3GB: ::c_int = 0x8000000;
 
 // Options set using PTRACE_SETOPTIONS.
 pub const PTRACE_O_TRACESYSGOOD: ::c_int = 0x00000001;
@@ -1110,9 +1105,6 @@ pub const PTRACE_O_TRACEEXEC: ::c_int = 0x00000010;
 pub const PTRACE_O_TRACEVFORKDONE: ::c_int = 0x00000020;
 pub const PTRACE_O_TRACEEXIT: ::c_int = 0x00000040;
 pub const PTRACE_O_TRACESECCOMP: ::c_int = 0x00000080;
-pub const PTRACE_O_EXITKILL: ::c_int = 0x00100000;
-pub const PTRACE_O_SUSPEND_SECCOMP: ::c_int = 0x00200000;
-pub const PTRACE_O_MASK: ::c_int = 0x003000ff;
 
 // Wait extended result codes for the above trace options.
 pub const PTRACE_EVENT_FORK: ::c_int = 1;
@@ -1309,6 +1301,24 @@ pub const ARPHRD_IEEE802154: u16 = 804;
 pub const ARPHRD_VOID: u16 = 0xFFFF;
 pub const ARPHRD_NONE: u16 = 0xFFFE;
 
+cfg_if! {
+    if #[cfg(not(target_env = "uclibc"))] {
+        pub const IPPROTO_BEETPH: ::c_int = 94;
+        pub const IPPROTO_MPLS: ::c_int = 137;
+        pub const IPV6_HDRINCL: ::c_int = 36;
+        pub const IPV6_PMTUDISC_INTERFACE: ::c_int = 4;
+        pub const IPV6_PMTUDISC_OMIT: ::c_int = 5;
+        pub const CLONE_NEWCGROUP: ::c_int = 0x02000000;
+        pub const ADDR_NO_RANDOMIZE: ::c_int = 0x0040000;
+        pub const ADDR_COMPAT_LAYOUT: ::c_int = 0x0200000;
+        pub const READ_IMPLIES_EXEC: ::c_int = 0x0400000;
+        pub const ADDR_LIMIT_3GB: ::c_int = 0x8000000;
+        pub const PTRACE_O_EXITKILL: ::c_int = 0x00100000;
+        pub const PTRACE_O_SUSPEND_SECCOMP: ::c_int = 0x00200000;
+        pub const PTRACE_O_MASK: ::c_int = 0x003000ff;
+    }
+}
+
 const_fn! {
     {const} fn CMSG_ALIGN(len: usize) -> usize {
         len + ::mem::size_of::<usize>() - 1 & !(::mem::size_of::<usize>() - 1)
@@ -1536,24 +1546,6 @@ extern "C" {
         count: ::size_t,
         offset: off64_t,
     ) -> ::ssize_t;
-    pub fn preadv64(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        iovcnt: ::c_int,
-        offset: ::off64_t,
-    ) -> ::ssize_t;
-    pub fn pwrite64(
-        fd: ::c_int,
-        buf: *const ::c_void,
-        count: ::size_t,
-        offset: off64_t,
-    ) -> ::ssize_t;
-    pub fn pwritev64(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        iovcnt: ::c_int,
-        offset: ::off64_t,
-    ) -> ::ssize_t;
     pub fn readdir64(dirp: *mut ::DIR) -> *mut ::dirent64;
     pub fn readdir64_r(
         dirp: *mut ::DIR,
@@ -1633,19 +1625,6 @@ extern "C" {
         options: ::c_int,
         rusage: *mut ::rusage,
     ) -> ::pid_t;
-    pub fn openpty(
-        amaster: *mut ::c_int,
-        aslave: *mut ::c_int,
-        name: *mut ::c_char,
-        termp: *const termios,
-        winp: *const ::winsize,
-    ) -> ::c_int;
-    pub fn forkpty(
-        amaster: *mut ::c_int,
-        name: *mut ::c_char,
-        termp: *const termios,
-        winp: *const ::winsize,
-    ) -> ::pid_t;
     pub fn login_tty(fd: ::c_int) -> ::c_int;
     pub fn execvpe(
         file: *const ::c_char,
@@ -1689,6 +1668,46 @@ extern "C" {
     pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
 
+cfg_if! {
+    if #[cfg(not(target_env = "uclibc"))] {
+        extern "C" {
+            pub fn preadv64(
+                fd: ::c_int,
+                iov: *const ::iovec,
+                iovcnt: ::c_int,
+                offset: ::off64_t,
+            ) -> ::ssize_t;
+            pub fn pwrite64(
+                fd: ::c_int,
+                buf: *const ::c_void,
+                count: ::size_t,
+                offset: off64_t,
+            ) -> ::ssize_t;
+            pub fn pwritev64(
+                fd: ::c_int,
+                iov: *const ::iovec,
+                iovcnt: ::c_int,
+                offset: ::off64_t,
+            ) -> ::ssize_t;
+            // uclibc has separate non-const version of this function
+            pub fn forkpty(
+                amaster: *mut ::c_int,
+                name: *mut ::c_char,
+                termp: *const termios,
+                winp: *const ::winsize,
+            ) -> ::pid_t;
+            // uclibc has separate non-const version of this function
+            pub fn openpty(
+                amaster: *mut ::c_int,
+                aslave: *mut ::c_int,
+                name: *mut ::c_char,
+                termp: *const termios,
+                winp: *const ::winsize,
+            ) -> ::c_int;
+        }
+    }
+}
+
 cfg_if! {
     if #[cfg(target_os = "emscripten")] {
         mod emscripten;
@@ -1696,6 +1715,9 @@ cfg_if! {
     } else if #[cfg(target_os = "linux")] {
         mod linux;
         pub use self::linux::*;
+    } else if #[cfg(target_os = "l4re")] {
+        mod linux;
+        pub use self::linux::*;
     } else if #[cfg(target_os = "android")] {
         mod android;
         pub use self::android::*;
diff --git a/src/unix/mod.rs b/src/unix/mod.rs
index 9db5a747d22dd..59537be7e0657 100644
--- a/src/unix/mod.rs
+++ b/src/unix/mod.rs
@@ -454,10 +454,7 @@ extern "C" {
         ptr: *mut *mut c_char,
         sizeloc: *mut size_t,
     ) -> *mut FILE;
-    pub fn open_wmemstream(
-        ptr: *mut *mut wchar_t,
-        sizeloc: *mut size_t,
-    ) -> *mut FILE;
+
     pub fn fflush(file: *mut FILE) -> c_int;
     pub fn fclose(file: *mut FILE) -> c_int;
     pub fn remove(filename: *const c_char) -> c_int;
@@ -622,15 +619,18 @@ extern "C" {
         ...
     ) -> ::c_int;
     pub fn sprintf(s: *mut ::c_char, format: *const ::c_char, ...) -> ::c_int;
-    #[cfg_attr(target_os = "linux", link_name = "__isoc99_fscanf")]
+    #[cfg_attr(all(target_os = "linux", not(target_env = "uclibc")),
+               link_name = "__isoc99_fscanf")]
     pub fn fscanf(
         stream: *mut ::FILE,
         format: *const ::c_char,
         ...
     ) -> ::c_int;
-    #[cfg_attr(target_os = "linux", link_name = "__isoc99_scanf")]
+    #[cfg_attr(all(target_os = "linux", not(target_env = "uclibc")),
+               link_name = "__isoc99_scanf")]
     pub fn scanf(format: *const ::c_char, ...) -> ::c_int;
-    #[cfg_attr(target_os = "linux", link_name = "__isoc99_sscanf")]
+    #[cfg_attr(all(target_os = "linux", not(target_env = "uclibc")),
+               link_name = "__isoc99_sscanf")]
     pub fn sscanf(s: *const ::c_char, format: *const ::c_char, ...)
         -> ::c_int;
     pub fn getchar_unlocked() -> ::c_int;
@@ -1544,6 +1544,17 @@ extern "C" {
     ) -> ::c_int;
 }
 
+cfg_if! {
+    if #[cfg(not(target_env = "uclibc"))] {
+        extern "C" {
+            pub fn open_wmemstream(
+                ptr: *mut *mut wchar_t,
+                sizeloc: *mut size_t,
+            ) -> *mut FILE;
+        }
+    }
+}
+
 cfg_if! {
     if #[cfg(not(target_os = "redox"))] {
         extern {
@@ -1599,13 +1610,11 @@ cfg_if! {
 }
 
 cfg_if! {
-    if #[cfg(target_env = "uclibc")] {
-        mod uclibc;
-        pub use self::uclibc::*;
-    } else if #[cfg(target_env = "newlib")] {
+    if #[cfg(target_env = "newlib")] {
         mod newlib;
         pub use self::newlib::*;
     } else if #[cfg(any(target_os = "linux",
+                        target_os = "l4re",
                         target_os = "android",
                         target_os = "emscripten"))] {
         mod linux_like;
diff --git a/src/unix/uclibc/align.rs b/src/unix/uclibc/align.rs
deleted file mode 100644
index 76b524d0c0829..0000000000000
--- a/src/unix/uclibc/align.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-macro_rules! expand_align {
-    () => {
-        s! {
-            #[cfg_attr(any(target_pointer_width = "32",
-                           target_arch = "x86_64",
-                           target_arch = "powerpc64",
-                           target_arch = "mips64",
-                           target_arch = "s390x",
-                           target_arch = "sparc64"),
-                       repr(align(4)))]
-            #[cfg_attr(not(any(target_pointer_width = "32",
-                               target_arch = "x86_64",
-                               target_arch = "powerpc64",
-                               target_arch = "mips64",
-                               target_arch = "s390x",
-                               target_arch = "sparc64")),
-                       repr(align(8)))]
-            pub struct pthread_mutexattr_t {
-                size: [u8; ::__SIZEOF_PTHREAD_MUTEXATTR_T],
-            }
-
-            #[repr(align(4))]
-            pub struct pthread_condattr_t {
-                size: [u8; ::__SIZEOF_PTHREAD_CONDATTR_T],
-            }
-        }
-
-        s_no_extra_traits! {
-            #[repr(align(8))]
-            #[allow(missing_debug_implementations)]
-            pub struct pthread_cond_t {
-                size: [u8; ::__SIZEOF_PTHREAD_COND_T],
-            }
-
-            #[cfg_attr(all(target_pointer_width = "32",
-                           any(target_arch = "mips",
-                               target_arch = "arm",
-                               target_arch = "powerpc")),
-                       repr(align(4)))]
-            #[cfg_attr(any(target_pointer_width = "64",
-                           not(any(target_arch = "mips",
-                                   target_arch = "arm",
-                                   target_arch = "powerpc"))),
-                       repr(align(8)))]
-            #[allow(missing_debug_implementations)]
-            pub struct pthread_mutex_t {
-                size: [u8; ::__SIZEOF_PTHREAD_MUTEX_T],
-            }
-
-            #[cfg_attr(all(target_pointer_width = "32",
-                           any(target_arch = "mips",
-                               target_arch = "arm",
-                               target_arch = "powerpc")),
-                       repr(align(4)))]
-            #[cfg_attr(any(target_pointer_width = "64",
-                           not(any(target_arch = "mips",
-                                   target_arch = "arm",
-                                   target_arch = "powerpc"))),
-                       repr(align(8)))]
-            #[allow(missing_debug_implementations)]
-            pub struct pthread_rwlock_t {
-                size: [u8; ::__SIZEOF_PTHREAD_RWLOCK_T],
-            }
-        }
-    };
-}
diff --git a/src/unix/uclibc/mod.rs b/src/unix/uclibc/mod.rs
deleted file mode 100644
index 9b9a0bf5078e1..0000000000000
--- a/src/unix/uclibc/mod.rs
+++ /dev/null
@@ -1,2365 +0,0 @@
-pub type sa_family_t = u16;
-pub type pthread_key_t = ::c_uint;
-pub type speed_t = ::c_uint;
-pub type tcflag_t = ::c_uint;
-pub type loff_t = ::c_longlong;
-pub type clockid_t = ::c_int;
-pub type key_t = ::c_int;
-pub type id_t = ::c_uint;
-pub type useconds_t = u32;
-pub type dev_t = u64;
-pub type socklen_t = u32;
-pub type mode_t = u32;
-pub type ino64_t = u64;
-pub type off64_t = i64;
-pub type blkcnt64_t = i64;
-pub type rlim64_t = u64;
-pub type shmatt_t = ::c_ulong;
-pub type mqd_t = ::c_int;
-pub type msgqnum_t = ::c_ulong;
-pub type msglen_t = ::c_ulong;
-pub type nfds_t = ::c_ulong;
-pub type nl_item = ::c_int;
-pub type idtype_t = ::c_uint;
-pub type Elf32_Half = u16;
-pub type Elf32_Word = u32;
-pub type Elf32_Off = u32;
-pub type Elf32_Addr = u32;
-pub type Elf64_Half = u16;
-pub type Elf64_Word = u32;
-pub type Elf64_Off = u64;
-pub type Elf64_Addr = u64;
-pub type Elf64_Xword = u64;
-pub type Elf64_Sxword = i64;
-
-#[cfg_attr(feature = "extra_traits", derive(Debug))]
-pub enum fpos64_t {} // FIXME: fill this out with a struct
-impl ::Copy for fpos64_t {}
-impl ::Clone for fpos64_t {
-    fn clone(&self) -> fpos64_t {
-        *self
-    }
-}
-
-#[cfg_attr(feature = "extra_traits", derive(Debug))]
-pub enum timezone {}
-impl ::Copy for timezone {}
-impl ::Clone for timezone {
-    fn clone(&self) -> timezone {
-        *self
-    }
-}
-
-s! {
-    pub struct in_addr {
-        pub s_addr: ::in_addr_t,
-    }
-
-    pub struct ip_mreq {
-        pub imr_multiaddr: in_addr,
-        pub imr_interface: in_addr,
-    }
-
-    pub struct sockaddr {
-        pub sa_family: sa_family_t,
-        pub sa_data: [::c_char; 14],
-    }
-
-    pub struct sockaddr_in {
-        pub sin_family: sa_family_t,
-        pub sin_port: ::in_port_t,
-        pub sin_addr: ::in_addr,
-        pub sin_zero: [u8; 8],
-    }
-
-    pub struct sockaddr_in6 {
-        pub sin6_family: sa_family_t,
-        pub sin6_port: ::in_port_t,
-        pub sin6_flowinfo: u32,
-        pub sin6_addr: ::in6_addr,
-        pub sin6_scope_id: u32,
-    }
-
-    pub struct addrinfo {
-        pub ai_flags: ::c_int,
-        pub ai_family: ::c_int,
-        pub ai_socktype: ::c_int,
-        pub ai_protocol: ::c_int,
-        pub ai_addrlen: socklen_t,
-
-        pub ai_addr: *mut ::sockaddr,
-
-        pub ai_canonname: *mut c_char,
-
-        pub ai_next: *mut addrinfo,
-    }
-
-    pub struct sockaddr_ll {
-        pub sll_family: ::c_ushort,
-        pub sll_protocol: ::c_ushort,
-        pub sll_ifindex: ::c_int,
-        pub sll_hatype: ::c_ushort,
-        pub sll_pkttype: ::c_uchar,
-        pub sll_halen: ::c_uchar,
-        pub sll_addr: [::c_uchar; 8]
-    }
-
-    pub struct fd_set {
-        fds_bits: [::c_ulong; FD_SETSIZE / ULONG_SIZE],
-    }
-
-    pub struct tm {
-        pub tm_sec: ::c_int,
-        pub tm_min: ::c_int,
-        pub tm_hour: ::c_int,
-        pub tm_mday: ::c_int,
-        pub tm_mon: ::c_int,
-        pub tm_year: ::c_int,
-        pub tm_wday: ::c_int,
-        pub tm_yday: ::c_int,
-        pub tm_isdst: ::c_int,
-        pub tm_gmtoff: ::c_long,
-        pub tm_zone: *const ::c_char,
-    }
-
-    pub struct sched_param {
-        pub sched_priority: ::c_int,
-    }
-
-    pub struct Dl_info {
-        pub dli_fname: *const ::c_char,
-        pub dli_fbase: *mut ::c_void,
-        pub dli_sname: *const ::c_char,
-        pub dli_saddr: *mut ::c_void,
-    }
-
-    pub struct lconv {
-        pub decimal_point: *mut ::c_char,
-        pub thousands_sep: *mut ::c_char,
-        pub grouping: *mut ::c_char,
-        pub int_curr_symbol: *mut ::c_char,
-        pub currency_symbol: *mut ::c_char,
-        pub mon_decimal_point: *mut ::c_char,
-        pub mon_thousands_sep: *mut ::c_char,
-        pub mon_grouping: *mut ::c_char,
-        pub positive_sign: *mut ::c_char,
-        pub negative_sign: *mut ::c_char,
-        pub int_frac_digits: ::c_char,
-        pub frac_digits: ::c_char,
-        pub p_cs_precedes: ::c_char,
-        pub p_sep_by_space: ::c_char,
-        pub n_cs_precedes: ::c_char,
-        pub n_sep_by_space: ::c_char,
-        pub p_sign_posn: ::c_char,
-        pub n_sign_posn: ::c_char,
-        pub int_p_cs_precedes: ::c_char,
-        pub int_p_sep_by_space: ::c_char,
-        pub int_n_cs_precedes: ::c_char,
-        pub int_n_sep_by_space: ::c_char,
-        pub int_p_sign_posn: ::c_char,
-        pub int_n_sign_posn: ::c_char,
-    }
-
-    pub struct rlimit64 {
-        pub rlim_cur: rlim64_t,
-        pub rlim_max: rlim64_t,
-    }
-
-    pub struct glob_t {
-        pub gl_pathc: ::size_t,
-        pub gl_pathv: *mut *mut c_char,
-        pub gl_offs: ::size_t,
-        pub gl_flags: ::c_int,
-
-        __unused1: *mut ::c_void,
-        __unused2: *mut ::c_void,
-        __unused3: *mut ::c_void,
-        __unused4: *mut ::c_void,
-        __unused5: *mut ::c_void,
-    }
-
-    pub struct ifaddrs {
-        pub ifa_next: *mut ifaddrs,
-        pub ifa_name: *mut c_char,
-        pub ifa_flags: ::c_uint,
-        pub ifa_addr: *mut ::sockaddr,
-        pub ifa_netmask: *mut ::sockaddr,
-        pub ifa_ifu: *mut ::sockaddr, // FIXME This should be a union
-        pub ifa_data: *mut ::c_void
-    }
-
-    pub struct pthread_rwlockattr_t {
-        __lockkind: ::c_int,
-        __pshared: ::c_int,
-    }
-
-    pub struct passwd {
-        pub pw_name: *mut ::c_char,
-        pub pw_passwd: *mut ::c_char,
-        pub pw_uid: ::uid_t,
-        pub pw_gid: ::gid_t,
-        pub pw_gecos: *mut ::c_char,
-        pub pw_dir: *mut ::c_char,
-        pub pw_shell: *mut ::c_char,
-    }
-
-    pub struct spwd {
-        pub sp_namp: *mut ::c_char,
-        pub sp_pwdp: *mut ::c_char,
-        pub sp_lstchg: ::c_long,
-        pub sp_min: ::c_long,
-        pub sp_max: ::c_long,
-        pub sp_warn: ::c_long,
-        pub sp_inact: ::c_long,
-        pub sp_expire: ::c_long,
-        pub sp_flag: ::c_ulong,
-    }
-
-    pub struct statvfs {
-        pub f_bsize: ::c_ulong,
-        pub f_frsize: ::c_ulong,
-        pub f_blocks: ::fsblkcnt_t,
-        pub f_bfree: ::fsblkcnt_t,
-        pub f_bavail: ::fsblkcnt_t,
-        pub f_files: ::fsfilcnt_t,
-        pub f_ffree: ::fsfilcnt_t,
-        pub f_favail: ::fsfilcnt_t,
-        #[cfg(target_endian = "little")]
-        pub f_fsid: ::c_ulong,
-        #[cfg(target_pointer_width = "32")]
-        __f_unused: ::c_int,
-        #[cfg(target_endian = "big")]
-        pub f_fsid: ::c_ulong,
-        pub f_flag: ::c_ulong,
-        pub f_namemax: ::c_ulong,
-        __f_spare: [::c_int; 6],
-    }
-
-    pub struct dqblk {
-        pub dqb_bhardlimit: u32,
-        pub dqb_bsoftlimit: u32,
-        pub dqb_curblocks: u32,
-        pub dqb_ihardlimit: u32,
-        pub dqb_isoftlimit: u32,
-        pub dqb_curinodes: u32,
-        pub dqb_btime: ::time_t,
-        pub dqb_itime: ::time_t,
-    }
-
-    pub struct signalfd_siginfo {
-        pub ssi_signo: u32,
-        pub ssi_errno: i32,
-        pub ssi_code: i32,
-        pub ssi_pid: u32,
-        pub ssi_uid: u32,
-        pub ssi_fd: i32,
-        pub ssi_tid: u32,
-        pub ssi_band: u32,
-        pub ssi_overrun: u32,
-        pub ssi_trapno: u32,
-        pub ssi_status: i32,
-        pub ssi_int: i32,
-        pub ssi_ptr: u64,
-        pub ssi_utime: u64,
-        pub ssi_stime: u64,
-        pub ssi_addr: u64,
-        pub ssi_addr_lsb: u16,
-        _pad2: u16,
-        pub ssi_syscall: i32,
-        pub ssi_call_addr: u64,
-        pub ssi_arch: u32,
-        _pad: [u8; 28],
-    }
-
-    pub struct fsid_t {
-        __val: [::c_int; 2],
-    }
-
-    pub struct cpu_set_t {
-        #[cfg(target_pointer_width = "32")]
-        bits: [u32; 32],
-        #[cfg(target_pointer_width = "64")]
-        bits: [u64; 16],
-    }
-
-    pub struct if_nameindex {
-        pub if_index: ::c_uint,
-        pub if_name: *mut ::c_char,
-    }
-
-    // System V IPC
-    pub struct msginfo {
-        pub msgpool: ::c_int,
-        pub msgmap: ::c_int,
-        pub msgmax: ::c_int,
-        pub msgmnb: ::c_int,
-        pub msgmni: ::c_int,
-        pub msgssz: ::c_int,
-        pub msgtql: ::c_int,
-        pub msgseg: ::c_ushort,
-    }
-
-    pub struct Elf32_Phdr {
-        pub p_type: Elf32_Word,
-        pub p_offset: Elf32_Off,
-        pub p_vaddr: Elf32_Addr,
-        pub p_paddr: Elf32_Addr,
-        pub p_filesz: Elf32_Word,
-        pub p_memsz: Elf32_Word,
-        pub p_flags: Elf32_Word,
-        pub p_align: Elf32_Word,
-    }
-
-    pub struct Elf64_Phdr {
-        pub p_type: Elf64_Word,
-        pub p_flags: Elf64_Word,
-        pub p_offset: Elf64_Off,
-        pub p_vaddr: Elf64_Addr,
-        pub p_paddr: Elf64_Addr,
-        pub p_filesz: Elf64_Xword,
-        pub p_memsz: Elf64_Xword,
-        pub p_align: Elf64_Xword,
-    }
-
-    pub struct dl_phdr_info {
-        #[cfg(target_pointer_width = "64")]
-        pub dlpi_addr: Elf64_Addr,
-        #[cfg(target_pointer_width = "32")]
-        pub dlpi_addr: Elf32_Addr,
-        pub dlpi_name: *const ::c_char,
-        #[cfg(target_pointer_width = "64")]
-        pub dlpi_phdr: *const Elf64_Phdr,
-        #[cfg(target_pointer_width = "32")]
-        pub dlpi_phdr: *const Elf32_Phdr,
-        #[cfg(target_pointer_width = "64")]
-        pub dlpi_phnum: Elf64_Half,
-        #[cfg(target_pointer_width = "32")]
-        pub dlpi_phnum: Elf32_Half,
-        // As of uClibc 1.0.36, the following fields are
-        // gated behind a "#if 0" block which always evaluates
-        // to false. So I'm just commenting these out and if uClibc changes
-        // the #if block in the future to include the following fields, these
-        // will probably need including here. tsidea
-        //
-        // pub dlpi_adds: ::c_ulonglong,
-        // pub dlpi_subs: ::c_ulonglong,
-        // pub dlpi_tls_modid: ::size_t,
-        // pub dlpi_tls_data: *mut ::c_void,
-    }
-
-    pub struct ucred {
-        pub pid: ::pid_t,
-        pub uid: ::uid_t,
-        pub gid: ::gid_t,
-    }
-}
-
-s_no_extra_traits! {
-    #[cfg_attr(
-        any(target_arch = "x86", target_arch = "x86_64"),
-        repr(packed)
-    )]
-    #[allow(missing_debug_implementations)]
-    pub struct epoll_event {
-        pub events: u32,
-        pub u64: u64,
-    }
-
-    #[allow(missing_debug_implementations)]
-    pub struct sockaddr_un {
-        pub sun_family: sa_family_t,
-        pub sun_path: [::c_char; 108]
-    }
-
-    #[allow(missing_debug_implementations)]
-    pub struct sockaddr_storage {
-        pub ss_family: sa_family_t,
-        __ss_align: ::size_t,
-        #[cfg(target_pointer_width = "32")]
-        __ss_pad2: [u8; 128 - 2 * 4],
-        #[cfg(target_pointer_width = "64")]
-        __ss_pad2: [u8; 128 - 2 * 8],
-    }
-
-    #[allow(missing_debug_implementations)]
-    pub struct utsname {
-        pub sysname: [::c_char; 65],
-        pub nodename: [::c_char; 65],
-        pub release: [::c_char; 65],
-        pub version: [::c_char; 65],
-        pub machine: [::c_char; 65],
-        pub domainname: [::c_char; 65]
-    }
-
-    #[allow(missing_debug_implementations)]
-    pub struct dirent {
-        pub d_ino: ::ino_t,
-        pub d_off: ::off_t,
-        pub d_reclen: ::c_ushort,
-        pub d_type: ::c_uchar,
-        pub d_name: [::c_char; 256],
-    }
-
-    #[allow(missing_debug_implementations)]
-    pub struct dirent64 {
-        pub d_ino: ::ino64_t,
-        pub d_off: ::off64_t,
-        pub d_reclen: ::c_ushort,
-        pub d_type: ::c_uchar,
-        pub d_name: [::c_char; 256],
-    }
-
-    pub struct mq_attr {
-        pub mq_flags: ::c_long,
-        pub mq_maxmsg: ::c_long,
-        pub mq_msgsize: ::c_long,
-        pub mq_curmsgs: ::c_long,
-        pad: [::c_long; 4]
-    }
-
-    pub struct sockaddr_nl {
-        pub nl_family: ::sa_family_t,
-        nl_pad: ::c_ushort,
-        pub nl_pid: u32,
-        pub nl_groups: u32
-    }
-
-    pub struct sigevent {
-        pub sigev_value: ::sigval,
-        pub sigev_signo: ::c_int,
-        pub sigev_notify: ::c_int,
-        // Actually a union.  We only expose sigev_notify_thread_id because it's
-        // the most useful member
-        pub sigev_notify_thread_id: ::c_int,
-        #[cfg(target_pointer_width = "64")]
-        __unused1: [::c_int; 11],
-        #[cfg(target_pointer_width = "32")]
-        __unused1: [::c_int; 12]
-    }
-}
-
-cfg_if! {
-    if #[cfg(feature = "extra_traits")] {
-        impl PartialEq for mq_attr {
-            fn eq(&self, other: &mq_attr) -> bool {
-                self.mq_flags == other.mq_flags &&
-                self.mq_maxmsg == other.mq_maxmsg &&
-                self.mq_msgsize == other.mq_msgsize &&
-                self.mq_curmsgs == other.mq_curmsgs
-            }
-        }
-        impl Eq for mq_attr {}
-        impl ::fmt::Debug for mq_attr {
-            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
-                f.debug_struct("mq_attr")
-                    .field("mq_flags", &self.mq_flags)
-                    .field("mq_maxmsg", &self.mq_maxmsg)
-                    .field("mq_msgsize", &self.mq_msgsize)
-                    .field("mq_curmsgs", &self.mq_curmsgs)
-                    .finish()
-            }
-        }
-        impl ::hash::Hash for mq_attr {
-            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
-                self.mq_flags.hash(state);
-                self.mq_maxmsg.hash(state);
-                self.mq_msgsize.hash(state);
-                self.mq_curmsgs.hash(state);
-            }
-        }
-
-        impl PartialEq for sockaddr_nl {
-            fn eq(&self, other: &sockaddr_nl) -> bool {
-                self.nl_family == other.nl_family &&
-                self.nl_pid == other.nl_pid &&
-                self.nl_groups == other.nl_groups
-            }
-        }
-        impl Eq for sockaddr_nl {}
-        impl ::fmt::Debug for sockaddr_nl {
-            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
-                f.debug_struct("sockaddr_nl")
-                    .field("nl_family", &self.nl_family)
-                    .field("nl_pid", &self.nl_pid)
-                    .field("nl_groups", &self.nl_groups)
-                    .finish()
-            }
-        }
-        impl ::hash::Hash for sockaddr_nl {
-            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
-                self.nl_family.hash(state);
-                self.nl_pid.hash(state);
-                self.nl_groups.hash(state);
-            }
-        }
-
-        impl PartialEq for sigevent {
-            fn eq(&self, other: &sigevent) -> bool {
-                self.sigev_value == other.sigev_value
-                    && self.sigev_signo == other.sigev_signo
-                    && self.sigev_notify == other.sigev_notify
-                    && self.sigev_notify_thread_id
-                        == other.sigev_notify_thread_id
-            }
-        }
-        impl Eq for sigevent {}
-        impl ::fmt::Debug for sigevent {
-            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
-                f.debug_struct("sigevent")
-                    .field("sigev_value", &self.sigev_value)
-                    .field("sigev_signo", &self.sigev_signo)
-                    .field("sigev_notify", &self.sigev_notify)
-                    .field("sigev_notify_thread_id",
-                           &self.sigev_notify_thread_id)
-                    .finish()
-            }
-        }
-        impl ::hash::Hash for sigevent {
-            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
-                self.sigev_value.hash(state);
-                self.sigev_signo.hash(state);
-                self.sigev_notify.hash(state);
-                self.sigev_notify_thread_id.hash(state);
-            }
-        }
-    }
-}
-
-// intentionally not public, only used for fd_set
-cfg_if! {
-    if #[cfg(target_pointer_width = "32")] {
-        const ULONG_SIZE: usize = 32;
-    } else if #[cfg(target_pointer_width = "64")] {
-        const ULONG_SIZE: usize = 64;
-    } else {
-        // Unknown target_pointer_width
-    }
-}
-
-pub const EXIT_FAILURE: ::c_int = 1;
-pub const EXIT_SUCCESS: ::c_int = 0;
-pub const RAND_MAX: ::c_int = 2147483647;
-pub const EOF: ::c_int = -1;
-pub const SEEK_SET: ::c_int = 0;
-pub const SEEK_CUR: ::c_int = 1;
-pub const SEEK_END: ::c_int = 2;
-pub const _IOFBF: ::c_int = 0;
-pub const _IONBF: ::c_int = 2;
-pub const _IOLBF: ::c_int = 1;
-
-pub const F_DUPFD: ::c_int = 0;
-pub const F_GETFD: ::c_int = 1;
-pub const F_SETFD: ::c_int = 2;
-pub const F_GETFL: ::c_int = 3;
-pub const F_SETFL: ::c_int = 4;
-
-// Linux-specific fcntls
-pub const F_SETLEASE: ::c_int = 1024;
-pub const F_GETLEASE: ::c_int = 1025;
-pub const F_NOTIFY: ::c_int = 1026;
-pub const F_DUPFD_CLOEXEC: ::c_int = 1030;
-
-// FIXME(#235): Include file sealing fcntls once we have a way to verify them.
-
-pub const SIGTRAP: ::c_int = 5;
-
-pub const PTHREAD_CREATE_JOINABLE: ::c_int = 0;
-pub const PTHREAD_CREATE_DETACHED: ::c_int = 1;
-
-pub const CLOCK_REALTIME: ::clockid_t = 0;
-pub const CLOCK_MONOTONIC: ::clockid_t = 1;
-pub const CLOCK_PROCESS_CPUTIME_ID: ::clockid_t = 2;
-pub const CLOCK_THREAD_CPUTIME_ID: ::clockid_t = 3;
-// FIXME: Add these constants once uclibc gets them.
-// pub const CLOCK_SGI_CYCLE: ::clockid_t = 10;
-// pub const CLOCK_TAI: ::clockid_t = 11;
-pub const TIMER_ABSTIME: ::c_int = 1;
-
-pub const RLIMIT_CPU: ::c_int = 0;
-pub const RLIMIT_FSIZE: ::c_int = 1;
-pub const RLIMIT_DATA: ::c_int = 2;
-pub const RLIMIT_STACK: ::c_int = 3;
-pub const RLIMIT_CORE: ::c_int = 4;
-pub const RLIMIT_LOCKS: ::c_int = 10;
-pub const RLIMIT_SIGPENDING: ::c_int = 11;
-pub const RLIMIT_MSGQUEUE: ::c_int = 12;
-pub const RLIMIT_NICE: ::c_int = 13;
-pub const RLIMIT_RTPRIO: ::c_int = 14;
-
-pub const RUSAGE_SELF: ::c_int = 0;
-
-pub const O_RDONLY: ::c_int = 0;
-pub const O_WRONLY: ::c_int = 1;
-pub const O_RDWR: ::c_int = 2;
-
-pub const SOCK_CLOEXEC: ::c_int = O_CLOEXEC;
-
-pub const S_IFIFO: ::mode_t = 4096;
-pub const S_IFCHR: ::mode_t = 8192;
-pub const S_IFBLK: ::mode_t = 24576;
-pub const S_IFDIR: ::mode_t = 16384;
-pub const S_IFREG: ::mode_t = 32768;
-pub const S_IFLNK: ::mode_t = 40960;
-pub const S_IFSOCK: ::mode_t = 49152;
-pub const S_IFMT: ::mode_t = 61440;
-pub const S_IRWXU: ::mode_t = 448;
-pub const S_IXUSR: ::mode_t = 64;
-pub const S_IWUSR: ::mode_t = 128;
-pub const S_IRUSR: ::mode_t = 256;
-pub const S_IRWXG: ::mode_t = 56;
-pub const S_IXGRP: ::mode_t = 8;
-pub const S_IWGRP: ::mode_t = 16;
-pub const S_IRGRP: ::mode_t = 32;
-pub const S_IRWXO: ::mode_t = 7;
-pub const S_IXOTH: ::mode_t = 1;
-pub const S_IWOTH: ::mode_t = 2;
-pub const S_IROTH: ::mode_t = 4;
-pub const F_OK: ::c_int = 0;
-pub const R_OK: ::c_int = 4;
-pub const W_OK: ::c_int = 2;
-pub const X_OK: ::c_int = 1;
-pub const STDIN_FILENO: ::c_int = 0;
-pub const STDOUT_FILENO: ::c_int = 1;
-pub const STDERR_FILENO: ::c_int = 2;
-pub const SIGHUP: ::c_int = 1;
-pub const SIGINT: ::c_int = 2;
-pub const SIGQUIT: ::c_int = 3;
-pub const SIGILL: ::c_int = 4;
-pub const SIGABRT: ::c_int = 6;
-pub const SIGFPE: ::c_int = 8;
-pub const SIGKILL: ::c_int = 9;
-pub const SIGSEGV: ::c_int = 11;
-pub const SIGPIPE: ::c_int = 13;
-pub const SIGALRM: ::c_int = 14;
-pub const SIGTERM: ::c_int = 15;
-
-pub const PROT_NONE: ::c_int = 0;
-pub const PROT_READ: ::c_int = 1;
-pub const PROT_WRITE: ::c_int = 2;
-pub const PROT_EXEC: ::c_int = 4;
-
-pub const LC_CTYPE: ::c_int = 0;
-pub const LC_NUMERIC: ::c_int = 1;
-pub const LC_MONETARY: ::c_int = 2;
-pub const LC_TIME: ::c_int = 3;
-pub const LC_COLLATE: ::c_int = 4;
-pub const LC_MESSAGES: ::c_int = 5;
-pub const LC_ALL: ::c_int = 6;
-pub const LC_CTYPE_MASK: ::c_int = 1 << LC_CTYPE;
-pub const LC_NUMERIC_MASK: ::c_int = 1 << LC_NUMERIC;
-pub const LC_TIME_MASK: ::c_int = 1 << LC_TIME;
-pub const LC_COLLATE_MASK: ::c_int = 1 << LC_COLLATE;
-pub const LC_MONETARY_MASK: ::c_int = 1 << LC_MONETARY;
-pub const LC_MESSAGES_MASK: ::c_int = 1 << LC_MESSAGES;
-// LC_ALL_MASK defined per platform
-
-pub const MAP_FILE: ::c_int = 0x0000;
-pub const MAP_SHARED: ::c_int = 0x0001;
-pub const MAP_PRIVATE: ::c_int = 0x0002;
-pub const MAP_FIXED: ::c_int = 0x0010;
-
-pub const MAP_FAILED: *mut ::c_void = !0 as *mut ::c_void;
-
-// MS_ flags for msync(2)
-pub const MS_ASYNC: ::c_int = 0x0001;
-pub const MS_INVALIDATE: ::c_int = 0x0002;
-pub const MS_SYNC: ::c_int = 0x0004;
-
-// MS_ flags for mount(2)
-pub const MS_RDONLY: ::c_ulong = 0x01;
-pub const MS_NOSUID: ::c_ulong = 0x02;
-pub const MS_NODEV: ::c_ulong = 0x04;
-pub const MS_NOEXEC: ::c_ulong = 0x08;
-pub const MS_SYNCHRONOUS: ::c_ulong = 0x10;
-pub const MS_REMOUNT: ::c_ulong = 0x20;
-pub const MS_MANDLOCK: ::c_ulong = 0x40;
-pub const MS_NOATIME: ::c_ulong = 0x0400;
-pub const MS_NODIRATIME: ::c_ulong = 0x0800;
-pub const MS_BIND: ::c_ulong = 0x1000;
-pub const MS_NOUSER: ::c_ulong = 0x80000000;
-pub const MS_MGC_VAL: ::c_ulong = 0xc0ed0000;
-pub const MS_MGC_MSK: ::c_ulong = 0xffff0000;
-pub const MS_RMT_MASK: ::c_ulong = 0x800051;
-
-pub const EPERM: ::c_int = 1;
-pub const ENOENT: ::c_int = 2;
-pub const ESRCH: ::c_int = 3;
-pub const EINTR: ::c_int = 4;
-pub const EIO: ::c_int = 5;
-pub const ENXIO: ::c_int = 6;
-pub const E2BIG: ::c_int = 7;
-pub const ENOEXEC: ::c_int = 8;
-pub const EBADF: ::c_int = 9;
-pub const ECHILD: ::c_int = 10;
-pub const EAGAIN: ::c_int = 11;
-pub const ENOMEM: ::c_int = 12;
-pub const EACCES: ::c_int = 13;
-pub const EFAULT: ::c_int = 14;
-pub const ENOTBLK: ::c_int = 15;
-pub const EBUSY: ::c_int = 16;
-pub const EEXIST: ::c_int = 17;
-pub const EXDEV: ::c_int = 18;
-pub const ENODEV: ::c_int = 19;
-pub const ENOTDIR: ::c_int = 20;
-pub const EISDIR: ::c_int = 21;
-pub const EINVAL: ::c_int = 22;
-pub const ENFILE: ::c_int = 23;
-pub const EMFILE: ::c_int = 24;
-pub const ENOTTY: ::c_int = 25;
-pub const ETXTBSY: ::c_int = 26;
-pub const EFBIG: ::c_int = 27;
-pub const ENOSPC: ::c_int = 28;
-pub const ESPIPE: ::c_int = 29;
-pub const EROFS: ::c_int = 30;
-pub const EMLINK: ::c_int = 31;
-pub const EPIPE: ::c_int = 32;
-pub const EDOM: ::c_int = 33;
-pub const ERANGE: ::c_int = 34;
-pub const EWOULDBLOCK: ::c_int = EAGAIN;
-
-pub const SCM_RIGHTS: ::c_int = 0x01;
-pub const SCM_CREDENTIALS: ::c_int = 0x02;
-
-// netinet/in.h
-// NOTE: These are in addition to the constants defined in src/unix/mod.rs
-
-// IPPROTO_IP defined in src/unix/mod.rs
-/// Hop-by-hop option header
-pub const IPPROTO_HOPOPTS: ::c_int = 0;
-// IPPROTO_ICMP defined in src/unix/mod.rs
-/// group mgmt protocol
-pub const IPPROTO_IGMP: ::c_int = 2;
-/// for compatibility
-pub const IPPROTO_IPIP: ::c_int = 4;
-// IPPROTO_TCP defined in src/unix/mod.rs
-/// exterior gateway protocol
-pub const IPPROTO_EGP: ::c_int = 8;
-/// pup
-pub const IPPROTO_PUP: ::c_int = 12;
-// IPPROTO_UDP defined in src/unix/mod.rs
-/// xns idp
-pub const IPPROTO_IDP: ::c_int = 22;
-/// tp-4 w/ class negotiation
-pub const IPPROTO_TP: ::c_int = 29;
-/// DCCP
-pub const IPPROTO_DCCP: ::c_int = 33;
-// IPPROTO_IPV6 defined in src/unix/mod.rs
-/// IP6 routing header
-pub const IPPROTO_ROUTING: ::c_int = 43;
-/// IP6 fragmentation header
-pub const IPPROTO_FRAGMENT: ::c_int = 44;
-/// resource reservation
-pub const IPPROTO_RSVP: ::c_int = 46;
-/// General Routing Encap.
-pub const IPPROTO_GRE: ::c_int = 47;
-/// IP6 Encap Sec. Payload
-pub const IPPROTO_ESP: ::c_int = 50;
-/// IP6 Auth Header
-pub const IPPROTO_AH: ::c_int = 51;
-// IPPROTO_ICMPV6 defined in src/unix/mod.rs
-/// IP6 no next header
-pub const IPPROTO_NONE: ::c_int = 59;
-/// IP6 destination option
-pub const IPPROTO_DSTOPTS: ::c_int = 60;
-pub const IPPROTO_MTP: ::c_int = 92;
-pub const IPPROTO_BEETPH: ::c_int = 94;
-/// encapsulation header
-pub const IPPROTO_ENCAP: ::c_int = 98;
-/// Protocol indep. multicast
-pub const IPPROTO_PIM: ::c_int = 103;
-/// IP Payload Comp. Protocol
-pub const IPPROTO_COMP: ::c_int = 108;
-/// SCTP
-pub const IPPROTO_SCTP: ::c_int = 132;
-pub const IPPROTO_MH: ::c_int = 135;
-pub const IPPROTO_UDPLITE: ::c_int = 136;
-pub const IPPROTO_MPLS: ::c_int = 137;
-/// raw IP packet
-pub const IPPROTO_RAW: ::c_int = 255;
-pub const IPPROTO_MAX: ::c_int = 256;
-
-pub const PROT_GROWSDOWN: ::c_int = 0x1000000;
-pub const PROT_GROWSUP: ::c_int = 0x2000000;
-
-pub const MAP_TYPE: ::c_int = 0x000f;
-
-pub const MADV_NORMAL: ::c_int = 0;
-pub const MADV_RANDOM: ::c_int = 1;
-pub const MADV_SEQUENTIAL: ::c_int = 2;
-pub const MADV_WILLNEED: ::c_int = 3;
-pub const MADV_DONTNEED: ::c_int = 4;
-pub const MADV_REMOVE: ::c_int = 9;
-pub const MADV_DONTFORK: ::c_int = 10;
-pub const MADV_DOFORK: ::c_int = 11;
-pub const MADV_MERGEABLE: ::c_int = 12;
-pub const MADV_UNMERGEABLE: ::c_int = 13;
-pub const MADV_HWPOISON: ::c_int = 100;
-
-// https://github.com/kraj/uClibc/blob/master/include/net/if.h#L44
-pub const IFF_UP: ::c_int = 0x1; // Interface is up.
-pub const IFF_BROADCAST: ::c_int = 0x2; // Broadcast address valid.
-pub const IFF_DEBUG: ::c_int = 0x4; // Turn on debugging.
-pub const IFF_LOOPBACK: ::c_int = 0x8; // Is a loopback net.
-pub const IFF_POINTOPOINT: ::c_int = 0x10; // Interface is point-to-point link.
-pub const IFF_NOTRAILERS: ::c_int = 0x20; // Avoid use of trailers.
-pub const IFF_RUNNING: ::c_int = 0x40; // Resources allocated.
-pub const IFF_NOARP: ::c_int = 0x80; // No address resolution protocol.
-pub const IFF_PROMISC: ::c_int = 0x100; // Receive all packets.
-
-// Not supported
-pub const IFF_ALLMULTI: ::c_int = 0x200; // Receive all multicast packets.
-pub const IFF_MASTER: ::c_int = 0x400; // Master of a load balancer.
-pub const IFF_SLAVE: ::c_int = 0x800; // Slave of a load balancer.
-pub const IFF_MULTICAST: ::c_int = 0x1000; // Supports multicast.
-pub const IFF_PORTSEL: ::c_int = 0x2000; // Can set media type.
-pub const IFF_AUTOMEDIA: ::c_int = 0x4000; // Auto media select active.
-
-// Dialup device with changing addresses.
-pub const IFF_DYNAMIC: ::c_int = 0x8000;
-
-pub const SOL_IP: ::c_int = 0;
-pub const SOL_TCP: ::c_int = 6;
-pub const SOL_IPV6: ::c_int = 41;
-pub const SOL_ICMPV6: ::c_int = 58;
-pub const SOL_RAW: ::c_int = 255;
-pub const SOL_DECNET: ::c_int = 261;
-pub const SOL_X25: ::c_int = 262;
-pub const SOL_PACKET: ::c_int = 263;
-pub const SOL_ATM: ::c_int = 264;
-pub const SOL_AAL: ::c_int = 265;
-pub const SOL_IRDA: ::c_int = 266;
-
-pub const AF_UNSPEC: ::c_int = 0;
-pub const AF_UNIX: ::c_int = 1;
-pub const AF_LOCAL: ::c_int = 1;
-pub const AF_INET: ::c_int = 2;
-pub const AF_AX25: ::c_int = 3;
-pub const AF_IPX: ::c_int = 4;
-pub const AF_APPLETALK: ::c_int = 5;
-pub const AF_NETROM: ::c_int = 6;
-pub const AF_BRIDGE: ::c_int = 7;
-pub const AF_ATMPVC: ::c_int = 8;
-pub const AF_X25: ::c_int = 9;
-pub const AF_INET6: ::c_int = 10;
-pub const AF_ROSE: ::c_int = 11;
-pub const AF_DECnet: ::c_int = 12;
-pub const AF_NETBEUI: ::c_int = 13;
-pub const AF_SECURITY: ::c_int = 14;
-pub const AF_KEY: ::c_int = 15;
-pub const AF_NETLINK: ::c_int = 16;
-pub const AF_ROUTE: ::c_int = AF_NETLINK;
-pub const AF_PACKET: ::c_int = 17;
-pub const AF_ASH: ::c_int = 18;
-pub const AF_ECONET: ::c_int = 19;
-pub const AF_ATMSVC: ::c_int = 20;
-pub const AF_SNA: ::c_int = 22;
-pub const AF_IRDA: ::c_int = 23;
-pub const AF_PPPOX: ::c_int = 24;
-pub const AF_WANPIPE: ::c_int = 25;
-pub const AF_LLC: ::c_int = 26;
-pub const AF_CAN: ::c_int = 29;
-pub const AF_TIPC: ::c_int = 30;
-pub const AF_BLUETOOTH: ::c_int = 31;
-pub const AF_IUCV: ::c_int = 32;
-pub const AF_RXRPC: ::c_int = 33;
-pub const AF_ISDN: ::c_int = 34;
-pub const AF_PHONET: ::c_int = 35;
-pub const AF_IEEE802154: ::c_int = 36;
-pub const AF_CAIF: ::c_int = 37;
-pub const AF_ALG: ::c_int = 38;
-
-pub const PF_UNSPEC: ::c_int = AF_UNSPEC;
-pub const PF_UNIX: ::c_int = AF_UNIX;
-pub const PF_LOCAL: ::c_int = AF_LOCAL;
-pub const PF_INET: ::c_int = AF_INET;
-pub const PF_AX25: ::c_int = AF_AX25;
-pub const PF_IPX: ::c_int = AF_IPX;
-pub const PF_APPLETALK: ::c_int = AF_APPLETALK;
-pub const PF_NETROM: ::c_int = AF_NETROM;
-pub const PF_BRIDGE: ::c_int = AF_BRIDGE;
-pub const PF_ATMPVC: ::c_int = AF_ATMPVC;
-pub const PF_X25: ::c_int = AF_X25;
-pub const PF_INET6: ::c_int = AF_INET6;
-pub const PF_ROSE: ::c_int = AF_ROSE;
-pub const PF_DECnet: ::c_int = AF_DECnet;
-pub const PF_NETBEUI: ::c_int = AF_NETBEUI;
-pub const PF_SECURITY: ::c_int = AF_SECURITY;
-pub const PF_KEY: ::c_int = AF_KEY;
-pub const PF_NETLINK: ::c_int = AF_NETLINK;
-pub const PF_ROUTE: ::c_int = AF_ROUTE;
-pub const PF_PACKET: ::c_int = AF_PACKET;
-pub const PF_ASH: ::c_int = AF_ASH;
-pub const PF_ECONET: ::c_int = AF_ECONET;
-pub const PF_ATMSVC: ::c_int = AF_ATMSVC;
-pub const PF_SNA: ::c_int = AF_SNA;
-pub const PF_IRDA: ::c_int = AF_IRDA;
-pub const PF_PPPOX: ::c_int = AF_PPPOX;
-pub const PF_WANPIPE: ::c_int = AF_WANPIPE;
-pub const PF_LLC: ::c_int = AF_LLC;
-pub const PF_CAN: ::c_int = AF_CAN;
-pub const PF_TIPC: ::c_int = AF_TIPC;
-pub const PF_BLUETOOTH: ::c_int = AF_BLUETOOTH;
-pub const PF_IUCV: ::c_int = AF_IUCV;
-pub const PF_RXRPC: ::c_int = AF_RXRPC;
-pub const PF_ISDN: ::c_int = AF_ISDN;
-pub const PF_PHONET: ::c_int = AF_PHONET;
-pub const PF_IEEE802154: ::c_int = AF_IEEE802154;
-pub const PF_CAIF: ::c_int = AF_CAIF;
-pub const PF_ALG: ::c_int = AF_ALG;
-
-pub const SOMAXCONN: ::c_int = 128;
-
-pub const MSG_OOB: ::c_int = 1;
-pub const MSG_PEEK: ::c_int = 2;
-pub const MSG_DONTROUTE: ::c_int = 4;
-pub const MSG_CTRUNC: ::c_int = 8;
-pub const MSG_TRUNC: ::c_int = 0x20;
-pub const MSG_DONTWAIT: ::c_int = 0x40;
-pub const MSG_EOR: ::c_int = 0x80;
-pub const MSG_WAITALL: ::c_int = 0x100;
-pub const MSG_FIN: ::c_int = 0x200;
-pub const MSG_SYN: ::c_int = 0x400;
-pub const MSG_CONFIRM: ::c_int = 0x800;
-pub const MSG_RST: ::c_int = 0x1000;
-pub const MSG_ERRQUEUE: ::c_int = 0x2000;
-pub const MSG_NOSIGNAL: ::c_int = 0x4000;
-pub const MSG_MORE: ::c_int = 0x8000;
-pub const MSG_WAITFORONE: ::c_int = 0x10000;
-pub const MSG_CMSG_CLOEXEC: ::c_int = 0x40000000;
-
-pub const SOCK_RAW: ::c_int = 3;
-pub const SOCK_RDM: ::c_int = 4;
-pub const IP_MULTICAST_TTL: ::c_int = 33;
-pub const IP_MULTICAST_LOOP: ::c_int = 34;
-pub const IP_TTL: ::c_int = 2;
-pub const IP_HDRINCL: ::c_int = 3;
-pub const IP_ADD_MEMBERSHIP: ::c_int = 35;
-pub const IP_DROP_MEMBERSHIP: ::c_int = 36;
-pub const IPV6_ADD_MEMBERSHIP: ::c_int = 20;
-pub const IPV6_DROP_MEMBERSHIP: ::c_int = 21;
-
-pub const IPV6_JOIN_GROUP: ::c_int = 20;
-pub const IPV6_LEAVE_GROUP: ::c_int = 21;
-
-pub const TCP_NODELAY: ::c_int = 1;
-pub const TCP_MAXSEG: ::c_int = 2;
-pub const TCP_CORK: ::c_int = 3;
-pub const TCP_KEEPIDLE: ::c_int = 4;
-pub const TCP_KEEPINTVL: ::c_int = 5;
-pub const TCP_KEEPCNT: ::c_int = 6;
-pub const TCP_SYNCNT: ::c_int = 7;
-pub const TCP_LINGER2: ::c_int = 8;
-pub const TCP_DEFER_ACCEPT: ::c_int = 9;
-pub const TCP_WINDOW_CLAMP: ::c_int = 10;
-pub const TCP_INFO: ::c_int = 11;
-pub const TCP_QUICKACK: ::c_int = 12;
-pub const TCP_CONGESTION: ::c_int = 13;
-
-// Source:
-// https://github.com/kraj/uClibc/blob/ca1c74d67dd115d059a875150e10b8560a9c35a8
-// /libc/sysdeps/linux/common/bits/in.h
-// Same for all architectures
-pub const IPV6_MULTICAST_HOPS: ::c_int = 18;
-pub const IP_MULTICAST_IF: ::c_int = 32;
-pub const IPV6_MULTICAST_IF: ::c_int = 17;
-pub const IPV6_UNICAST_HOPS: ::c_int = 16;
-
-// Source:
-// https://github.com/kraj/uClibc/tree/ca1c74d67dd115d059a875150e10b8560a9c35a8
-// Same for all architectures
-pub const FUTEX_WAIT: ::c_int = 0;
-pub const FUTEX_PRIVATE_FLAG: ::c_int = 128;
-pub const FUTEX_WAKE: ::c_int = 1;
-
-pub const IPV6_MULTICAST_LOOP: ::c_int = 19;
-pub const IPV6_V6ONLY: ::c_int = 26;
-
-pub const SO_DEBUG: ::c_int = 1;
-
-pub const SHUT_RD: ::c_int = 0;
-pub const SHUT_WR: ::c_int = 1;
-pub const SHUT_RDWR: ::c_int = 2;
-
-pub const LOCK_SH: ::c_int = 1;
-pub const LOCK_EX: ::c_int = 2;
-pub const LOCK_NB: ::c_int = 4;
-pub const LOCK_UN: ::c_int = 8;
-
-pub const SS_ONSTACK: ::c_int = 1;
-pub const SS_DISABLE: ::c_int = 2;
-
-pub const PATH_MAX: ::c_int = 4096;
-
-pub const UIO_MAXIOV: ::c_int = 1024;
-
-pub const FD_SETSIZE: usize = 1024;
-
-pub const EPOLLIN: ::c_int = 0x1;
-pub const EPOLLPRI: ::c_int = 0x2;
-pub const EPOLLOUT: ::c_int = 0x4;
-pub const EPOLLRDNORM: ::c_int = 0x40;
-pub const EPOLLRDBAND: ::c_int = 0x80;
-pub const EPOLLWRNORM: ::c_int = 0x100;
-pub const EPOLLWRBAND: ::c_int = 0x200;
-pub const EPOLLMSG: ::c_int = 0x400;
-pub const EPOLLERR: ::c_int = 0x8;
-pub const EPOLLHUP: ::c_int = 0x10;
-pub const EPOLLET: ::c_int = 0x80000000;
-
-pub const EPOLL_CTL_ADD: ::c_int = 1;
-pub const EPOLL_CTL_MOD: ::c_int = 3;
-pub const EPOLL_CTL_DEL: ::c_int = 2;
-
-pub const MNT_DETACH: ::c_int = 0x2;
-pub const MNT_EXPIRE: ::c_int = 0x4;
-
-pub const MNT_FORCE: ::c_int = 0x1;
-
-pub const Q_SYNC: ::c_int = 0x600;
-pub const Q_QUOTAON: ::c_int = 0x100;
-pub const Q_QUOTAOFF: ::c_int = 0x200;
-pub const Q_GETQUOTA: ::c_int = 0x300;
-pub const Q_SETQUOTA: ::c_int = 0x400;
-
-pub const TCIOFF: ::c_int = 2;
-pub const TCION: ::c_int = 3;
-pub const TCOOFF: ::c_int = 0;
-pub const TCOON: ::c_int = 1;
-pub const TCIFLUSH: ::c_int = 0;
-pub const TCOFLUSH: ::c_int = 1;
-pub const TCIOFLUSH: ::c_int = 2;
-pub const NL0: ::tcflag_t = 0x00000000;
-pub const NL1: ::tcflag_t = 0x00000100;
-pub const TAB0: ::tcflag_t = 0x00000000;
-pub const CR0: ::tcflag_t = 0x00000000;
-pub const FF0: ::tcflag_t = 0x00000000;
-pub const BS0: ::tcflag_t = 0x00000000;
-pub const VT0: ::tcflag_t = 0x00000000;
-pub const VERASE: usize = 2;
-pub const VKILL: usize = 3;
-pub const VINTR: usize = 0;
-pub const VQUIT: usize = 1;
-pub const VLNEXT: usize = 15;
-pub const IGNBRK: ::tcflag_t = 0x00000001;
-pub const BRKINT: ::tcflag_t = 0x00000002;
-pub const IGNPAR: ::tcflag_t = 0x00000004;
-pub const PARMRK: ::tcflag_t = 0x00000008;
-pub const INPCK: ::tcflag_t = 0x00000010;
-pub const ISTRIP: ::tcflag_t = 0x00000020;
-pub const INLCR: ::tcflag_t = 0x00000040;
-pub const IGNCR: ::tcflag_t = 0x00000080;
-pub const ICRNL: ::tcflag_t = 0x00000100;
-pub const IXANY: ::tcflag_t = 0x00000800;
-pub const IMAXBEL: ::tcflag_t = 0x00002000;
-pub const OPOST: ::tcflag_t = 0x1;
-pub const CS5: ::tcflag_t = 0x00000000;
-pub const CRTSCTS: ::tcflag_t = 0x80000000;
-pub const ECHO: ::tcflag_t = 0x00000008;
-
-pub const CLONE_VM: ::c_int = 0x100;
-pub const CLONE_FS: ::c_int = 0x200;
-pub const CLONE_FILES: ::c_int = 0x400;
-pub const CLONE_SIGHAND: ::c_int = 0x800;
-pub const CLONE_PTRACE: ::c_int = 0x2000;
-pub const CLONE_VFORK: ::c_int = 0x4000;
-pub const CLONE_PARENT: ::c_int = 0x8000;
-pub const CLONE_THREAD: ::c_int = 0x10000;
-pub const CLONE_NEWNS: ::c_int = 0x20000;
-pub const CLONE_SYSVSEM: ::c_int = 0x40000;
-pub const CLONE_SETTLS: ::c_int = 0x80000;
-pub const CLONE_PARENT_SETTID: ::c_int = 0x100000;
-pub const CLONE_CHILD_CLEARTID: ::c_int = 0x200000;
-pub const CLONE_DETACHED: ::c_int = 0x400000;
-pub const CLONE_UNTRACED: ::c_int = 0x800000;
-pub const CLONE_CHILD_SETTID: ::c_int = 0x01000000;
-pub const CLONE_NEWUTS: ::c_int = 0x04000000;
-pub const CLONE_NEWIPC: ::c_int = 0x08000000;
-pub const CLONE_NEWUSER: ::c_int = 0x10000000;
-pub const CLONE_NEWPID: ::c_int = 0x20000000;
-pub const CLONE_NEWNET: ::c_int = 0x40000000;
-pub const CLONE_IO: ::c_int = 0x80000000;
-
-pub const WNOHANG: ::c_int = 0x00000001;
-pub const WUNTRACED: ::c_int = 0x00000002;
-pub const WSTOPPED: ::c_int = WUNTRACED;
-pub const WEXITED: ::c_int = 0x00000004;
-pub const WCONTINUED: ::c_int = 0x00000008;
-pub const WNOWAIT: ::c_int = 0x01000000;
-
-pub const __WNOTHREAD: ::c_int = 0x20000000;
-pub const __WALL: ::c_int = 0x40000000;
-pub const __WCLONE: ::c_int = 0x80000000;
-
-pub const SPLICE_F_MOVE: ::c_uint = 0x01;
-pub const SPLICE_F_NONBLOCK: ::c_uint = 0x02;
-pub const SPLICE_F_MORE: ::c_uint = 0x04;
-pub const SPLICE_F_GIFT: ::c_uint = 0x08;
-
-pub const RTLD_LOCAL: ::c_int = 0;
-pub const RTLD_LAZY: ::c_int = 1;
-
-pub const POSIX_FADV_NORMAL: ::c_int = 0;
-pub const POSIX_FADV_RANDOM: ::c_int = 1;
-pub const POSIX_FADV_SEQUENTIAL: ::c_int = 2;
-pub const POSIX_FADV_WILLNEED: ::c_int = 3;
-
-pub const AT_FDCWD: ::c_int = -100;
-pub const AT_SYMLINK_NOFOLLOW: ::c_int = 0x100;
-pub const AT_REMOVEDIR: ::c_int = 0x200;
-pub const AT_EACCESS: ::c_int = 0x200;
-pub const AT_SYMLINK_FOLLOW: ::c_int = 0x400;
-
-pub const LOG_CRON: ::c_int = 9 << 3;
-pub const LOG_AUTHPRIV: ::c_int = 10 << 3;
-pub const LOG_FTP: ::c_int = 11 << 3;
-pub const LOG_PERROR: ::c_int = 0x20;
-
-pub const POLLIN: ::c_short = 0x1;
-pub const POLLPRI: ::c_short = 0x2;
-pub const POLLOUT: ::c_short = 0x4;
-pub const POLLERR: ::c_short = 0x8;
-pub const POLLHUP: ::c_short = 0x10;
-pub const POLLNVAL: ::c_short = 0x20;
-
-pub const PIPE_BUF: usize = 4096;
-
-pub const SI_LOAD_SHIFT: ::c_uint = 16;
-
-pub const CLD_EXITED: ::c_int = 1;
-pub const CLD_KILLED: ::c_int = 2;
-pub const CLD_DUMPED: ::c_int = 3;
-pub const CLD_TRAPPED: ::c_int = 4;
-pub const CLD_STOPPED: ::c_int = 5;
-pub const CLD_CONTINUED: ::c_int = 6;
-
-pub const SIGEV_SIGNAL: ::c_int = 0;
-pub const SIGEV_NONE: ::c_int = 1;
-pub const SIGEV_THREAD: ::c_int = 2;
-
-pub const P_ALL: idtype_t = 0;
-pub const P_PID: idtype_t = 1;
-pub const P_PGID: idtype_t = 2;
-
-pub const UTIME_OMIT: c_long = 1073741822;
-pub const UTIME_NOW: c_long = 1073741823;
-
-pub const L_tmpnam: ::c_uint = 20;
-pub const _PC_LINK_MAX: ::c_int = 0;
-pub const _PC_MAX_CANON: ::c_int = 1;
-pub const _PC_MAX_INPUT: ::c_int = 2;
-pub const _PC_NAME_MAX: ::c_int = 3;
-pub const _PC_PATH_MAX: ::c_int = 4;
-pub const _PC_PIPE_BUF: ::c_int = 5;
-pub const _PC_CHOWN_RESTRICTED: ::c_int = 6;
-pub const _PC_NO_TRUNC: ::c_int = 7;
-pub const _PC_VDISABLE: ::c_int = 8;
-
-pub const _SC_ARG_MAX: ::c_int = 0;
-pub const _SC_CHILD_MAX: ::c_int = 1;
-pub const _SC_CLK_TCK: ::c_int = 2;
-pub const _SC_NGROUPS_MAX: ::c_int = 3;
-pub const _SC_OPEN_MAX: ::c_int = 4;
-pub const _SC_STREAM_MAX: ::c_int = 5;
-pub const _SC_TZNAME_MAX: ::c_int = 6;
-pub const _SC_JOB_CONTROL: ::c_int = 7;
-pub const _SC_SAVED_IDS: ::c_int = 8;
-pub const _SC_REALTIME_SIGNALS: ::c_int = 9;
-pub const _SC_PRIORITY_SCHEDULING: ::c_int = 10;
-pub const _SC_TIMERS: ::c_int = 11;
-pub const _SC_ASYNCHRONOUS_IO: ::c_int = 12;
-pub const _SC_PRIORITIZED_IO: ::c_int = 13;
-pub const _SC_SYNCHRONIZED_IO: ::c_int = 14;
-pub const _SC_FSYNC: ::c_int = 15;
-pub const _SC_MAPPED_FILES: ::c_int = 16;
-pub const _SC_MEMLOCK: ::c_int = 17;
-pub const _SC_MEMLOCK_RANGE: ::c_int = 18;
-pub const _SC_MEMORY_PROTECTION: ::c_int = 19;
-pub const _SC_MESSAGE_PASSING: ::c_int = 20;
-pub const _SC_SEMAPHORES: ::c_int = 21;
-pub const _SC_SHARED_MEMORY_OBJECTS: ::c_int = 22;
-pub const _SC_AIO_LISTIO_MAX: ::c_int = 23;
-pub const _SC_AIO_MAX: ::c_int = 24;
-pub const _SC_AIO_PRIO_DELTA_MAX: ::c_int = 25;
-pub const _SC_DELAYTIMER_MAX: ::c_int = 26;
-pub const _SC_MQ_OPEN_MAX: ::c_int = 27;
-pub const _SC_MQ_PRIO_MAX: ::c_int = 28;
-pub const _SC_VERSION: ::c_int = 29;
-pub const _SC_PAGESIZE: ::c_int = 30;
-pub const _SC_PAGE_SIZE: ::c_int = _SC_PAGESIZE;
-pub const _SC_RTSIG_MAX: ::c_int = 31;
-pub const _SC_SEM_NSEMS_MAX: ::c_int = 32;
-pub const _SC_SEM_VALUE_MAX: ::c_int = 33;
-pub const _SC_SIGQUEUE_MAX: ::c_int = 34;
-pub const _SC_TIMER_MAX: ::c_int = 35;
-pub const _SC_BC_BASE_MAX: ::c_int = 36;
-pub const _SC_BC_DIM_MAX: ::c_int = 37;
-pub const _SC_BC_SCALE_MAX: ::c_int = 38;
-pub const _SC_BC_STRING_MAX: ::c_int = 39;
-pub const _SC_COLL_WEIGHTS_MAX: ::c_int = 40;
-pub const _SC_EXPR_NEST_MAX: ::c_int = 42;
-pub const _SC_LINE_MAX: ::c_int = 43;
-pub const _SC_RE_DUP_MAX: ::c_int = 44;
-pub const _SC_2_VERSION: ::c_int = 46;
-pub const _SC_2_C_BIND: ::c_int = 47;
-pub const _SC_2_C_DEV: ::c_int = 48;
-pub const _SC_2_FORT_DEV: ::c_int = 49;
-pub const _SC_2_FORT_RUN: ::c_int = 50;
-pub const _SC_2_SW_DEV: ::c_int = 51;
-pub const _SC_2_LOCALEDEF: ::c_int = 52;
-pub const _SC_IOV_MAX: ::c_int = 60;
-pub const _SC_THREADS: ::c_int = 67;
-pub const _SC_THREAD_SAFE_FUNCTIONS: ::c_int = 68;
-pub const _SC_GETGR_R_SIZE_MAX: ::c_int = 69;
-pub const _SC_GETPW_R_SIZE_MAX: ::c_int = 70;
-pub const _SC_LOGIN_NAME_MAX: ::c_int = 71;
-pub const _SC_TTY_NAME_MAX: ::c_int = 72;
-pub const _SC_THREAD_DESTRUCTOR_ITERATIONS: ::c_int = 73;
-pub const _SC_THREAD_KEYS_MAX: ::c_int = 74;
-pub const _SC_THREAD_STACK_MIN: ::c_int = 75;
-pub const _SC_THREAD_THREADS_MAX: ::c_int = 76;
-pub const _SC_THREAD_ATTR_STACKADDR: ::c_int = 77;
-pub const _SC_THREAD_ATTR_STACKSIZE: ::c_int = 78;
-pub const _SC_THREAD_PRIORITY_SCHEDULING: ::c_int = 79;
-pub const _SC_THREAD_PRIO_INHERIT: ::c_int = 80;
-pub const _SC_THREAD_PRIO_PROTECT: ::c_int = 81;
-pub const _SC_NPROCESSORS_ONLN: ::c_int = 84;
-pub const _SC_ATEXIT_MAX: ::c_int = 87;
-pub const _SC_XOPEN_VERSION: ::c_int = 89;
-pub const _SC_XOPEN_XCU_VERSION: ::c_int = 90;
-pub const _SC_XOPEN_UNIX: ::c_int = 91;
-pub const _SC_XOPEN_CRYPT: ::c_int = 92;
-pub const _SC_XOPEN_ENH_I18N: ::c_int = 93;
-pub const _SC_XOPEN_SHM: ::c_int = 94;
-pub const _SC_2_CHAR_TERM: ::c_int = 95;
-pub const _SC_2_UPE: ::c_int = 97;
-pub const _SC_XBS5_ILP32_OFF32: ::c_int = 125;
-pub const _SC_XBS5_ILP32_OFFBIG: ::c_int = 126;
-pub const _SC_XBS5_LPBIG_OFFBIG: ::c_int = 128;
-pub const _SC_XOPEN_LEGACY: ::c_int = 129;
-pub const _SC_XOPEN_REALTIME: ::c_int = 130;
-pub const _SC_XOPEN_REALTIME_THREADS: ::c_int = 131;
-pub const _SC_HOST_NAME_MAX: ::c_int = 180;
-
-pub const RLIM_SAVED_MAX: ::rlim_t = RLIM_INFINITY;
-pub const RLIM_SAVED_CUR: ::rlim_t = RLIM_INFINITY;
-
-pub const GLOB_ERR: ::c_int = 1 << 0;
-pub const GLOB_MARK: ::c_int = 1 << 1;
-pub const GLOB_NOSORT: ::c_int = 1 << 2;
-pub const GLOB_DOOFFS: ::c_int = 1 << 3;
-pub const GLOB_NOCHECK: ::c_int = 1 << 4;
-pub const GLOB_APPEND: ::c_int = 1 << 5;
-pub const GLOB_NOESCAPE: ::c_int = 1 << 6;
-
-pub const GLOB_NOSPACE: ::c_int = 1;
-pub const GLOB_ABORTED: ::c_int = 2;
-pub const GLOB_NOMATCH: ::c_int = 3;
-
-pub const POSIX_MADV_NORMAL: ::c_int = 0;
-pub const POSIX_MADV_RANDOM: ::c_int = 1;
-pub const POSIX_MADV_SEQUENTIAL: ::c_int = 2;
-pub const POSIX_MADV_WILLNEED: ::c_int = 3;
-
-pub const S_IEXEC: mode_t = 64;
-pub const S_IWRITE: mode_t = 128;
-pub const S_IREAD: mode_t = 256;
-
-pub const F_LOCK: ::c_int = 1;
-pub const F_TEST: ::c_int = 3;
-pub const F_TLOCK: ::c_int = 2;
-pub const F_ULOCK: ::c_int = 0;
-
-pub const ST_RDONLY: ::c_ulong = 1;
-pub const ST_NOSUID: ::c_ulong = 2;
-pub const ST_NODEV: ::c_ulong = 4;
-pub const ST_NOEXEC: ::c_ulong = 8;
-pub const ST_SYNCHRONOUS: ::c_ulong = 16;
-pub const ST_MANDLOCK: ::c_ulong = 64;
-pub const ST_WRITE: ::c_ulong = 128;
-pub const ST_APPEND: ::c_ulong = 256;
-pub const ST_IMMUTABLE: ::c_ulong = 512;
-pub const ST_NOATIME: ::c_ulong = 1024;
-pub const ST_NODIRATIME: ::c_ulong = 2048;
-
-pub const RTLD_NEXT: *mut ::c_void = -1i64 as *mut ::c_void;
-pub const RTLD_DEFAULT: *mut ::c_void = 0i64 as *mut ::c_void;
-pub const RTLD_NODELETE: ::c_int = 0x1000;
-pub const RTLD_NOW: ::c_int = 0x2;
-
-pub const TCP_MD5SIG: ::c_int = 14;
-
-align_const! {
-    pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
-        size: [0; __SIZEOF_PTHREAD_MUTEX_T],
-    };
-    pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
-        size: [0; __SIZEOF_PTHREAD_COND_T],
-    };
-    pub const PTHREAD_RWLOCK_INITIALIZER: pthread_rwlock_t = pthread_rwlock_t {
-        size: [0; __SIZEOF_PTHREAD_RWLOCK_T],
-    };
-}
-pub const PTHREAD_MUTEX_NORMAL: ::c_int = 0;
-pub const PTHREAD_MUTEX_RECURSIVE: ::c_int = 1;
-pub const PTHREAD_MUTEX_ERRORCHECK: ::c_int = 2;
-pub const PTHREAD_MUTEX_DEFAULT: ::c_int = PTHREAD_MUTEX_NORMAL;
-pub const __SIZEOF_PTHREAD_COND_T: usize = 48;
-
-pub const SCHED_OTHER: ::c_int = 0;
-pub const SCHED_FIFO: ::c_int = 1;
-pub const SCHED_RR: ::c_int = 2;
-pub const SCHED_BATCH: ::c_int = 3;
-pub const SCHED_IDLE: ::c_int = 5;
-
-// System V IPC
-pub const IPC_PRIVATE: ::key_t = 0;
-
-pub const IPC_CREAT: ::c_int = 0o1000;
-pub const IPC_EXCL: ::c_int = 0o2000;
-pub const IPC_NOWAIT: ::c_int = 0o4000;
-
-pub const IPC_RMID: ::c_int = 0;
-pub const IPC_SET: ::c_int = 1;
-pub const IPC_STAT: ::c_int = 2;
-pub const IPC_INFO: ::c_int = 3;
-pub const MSG_STAT: ::c_int = 11;
-pub const MSG_INFO: ::c_int = 12;
-
-pub const MSG_NOERROR: ::c_int = 0o10000;
-pub const MSG_EXCEPT: ::c_int = 0o20000;
-
-pub const SHM_R: ::c_int = 0o400;
-pub const SHM_W: ::c_int = 0o200;
-
-pub const SHM_RDONLY: ::c_int = 0o10000;
-pub const SHM_RND: ::c_int = 0o20000;
-pub const SHM_REMAP: ::c_int = 0o40000;
-
-pub const SHM_LOCK: ::c_int = 11;
-pub const SHM_UNLOCK: ::c_int = 12;
-
-pub const SHM_HUGETLB: ::c_int = 0o4000;
-pub const SHM_NORESERVE: ::c_int = 0o10000;
-
-pub const EPOLLRDHUP: ::c_int = 0x2000;
-pub const EPOLLONESHOT: ::c_int = 0x40000000;
-
-pub const QFMT_VFS_OLD: ::c_int = 1;
-pub const QFMT_VFS_V0: ::c_int = 2;
-
-pub const EFD_SEMAPHORE: ::c_int = 0x1;
-
-pub const LOG_NFACILITIES: ::c_int = 24;
-
-pub const SEM_FAILED: *mut ::sem_t = 0 as *mut sem_t;
-
-pub const RB_AUTOBOOT: ::c_int = 0x01234567u32 as i32;
-pub const RB_HALT_SYSTEM: ::c_int = 0xcdef0123u32 as i32;
-pub const RB_ENABLE_CAD: ::c_int = 0x89abcdefu32 as i32;
-pub const RB_DISABLE_CAD: ::c_int = 0x00000000u32 as i32;
-pub const RB_POWER_OFF: ::c_int = 0x4321fedcu32 as i32;
-
-pub const AI_PASSIVE: ::c_int = 0x0001;
-pub const AI_CANONNAME: ::c_int = 0x0002;
-pub const AI_NUMERICHOST: ::c_int = 0x0004;
-pub const AI_V4MAPPED: ::c_int = 0x0008;
-pub const AI_ALL: ::c_int = 0x0010;
-pub const AI_ADDRCONFIG: ::c_int = 0x0020;
-
-pub const AI_NUMERICSERV: ::c_int = 0x0400;
-
-pub const EAI_BADFLAGS: ::c_int = -1;
-pub const EAI_NONAME: ::c_int = -2;
-pub const EAI_AGAIN: ::c_int = -3;
-pub const EAI_FAIL: ::c_int = -4;
-pub const EAI_NODATA: ::c_int = -5;
-pub const EAI_FAMILY: ::c_int = -6;
-pub const EAI_SOCKTYPE: ::c_int = -7;
-pub const EAI_SERVICE: ::c_int = -8;
-pub const EAI_MEMORY: ::c_int = -10;
-pub const EAI_OVERFLOW: ::c_int = -12;
-
-pub const NI_NUMERICHOST: ::c_int = 1;
-pub const NI_NUMERICSERV: ::c_int = 2;
-pub const NI_NOFQDN: ::c_int = 4;
-pub const NI_NAMEREQD: ::c_int = 8;
-pub const NI_DGRAM: ::c_int = 16;
-
-pub const SYNC_FILE_RANGE_WAIT_BEFORE: ::c_uint = 1;
-pub const SYNC_FILE_RANGE_WRITE: ::c_uint = 2;
-pub const SYNC_FILE_RANGE_WAIT_AFTER: ::c_uint = 4;
-
-pub const EAI_SYSTEM: ::c_int = -11;
-
-pub const MREMAP_MAYMOVE: ::c_int = 1;
-pub const MREMAP_FIXED: ::c_int = 2;
-
-pub const PR_SET_PDEATHSIG: ::c_int = 1;
-pub const PR_GET_PDEATHSIG: ::c_int = 2;
-
-pub const PR_GET_DUMPABLE: ::c_int = 3;
-pub const PR_SET_DUMPABLE: ::c_int = 4;
-
-pub const PR_GET_UNALIGN: ::c_int = 5;
-pub const PR_SET_UNALIGN: ::c_int = 6;
-pub const PR_UNALIGN_NOPRINT: ::c_int = 1;
-pub const PR_UNALIGN_SIGBUS: ::c_int = 2;
-
-pub const PR_GET_KEEPCAPS: ::c_int = 7;
-pub const PR_SET_KEEPCAPS: ::c_int = 8;
-
-pub const PR_GET_FPEMU: ::c_int = 9;
-pub const PR_SET_FPEMU: ::c_int = 10;
-pub const PR_FPEMU_NOPRINT: ::c_int = 1;
-pub const PR_FPEMU_SIGFPE: ::c_int = 2;
-
-pub const PR_GET_FPEXC: ::c_int = 11;
-pub const PR_SET_FPEXC: ::c_int = 12;
-pub const PR_FP_EXC_SW_ENABLE: ::c_int = 0x80;
-pub const PR_FP_EXC_DIV: ::c_int = 0x010000;
-pub const PR_FP_EXC_OVF: ::c_int = 0x020000;
-pub const PR_FP_EXC_UND: ::c_int = 0x040000;
-pub const PR_FP_EXC_RES: ::c_int = 0x080000;
-pub const PR_FP_EXC_INV: ::c_int = 0x100000;
-pub const PR_FP_EXC_DISABLED: ::c_int = 0;
-pub const PR_FP_EXC_NONRECOV: ::c_int = 1;
-pub const PR_FP_EXC_ASYNC: ::c_int = 2;
-pub const PR_FP_EXC_PRECISE: ::c_int = 3;
-
-pub const PR_GET_TIMING: ::c_int = 13;
-pub const PR_SET_TIMING: ::c_int = 14;
-pub const PR_TIMING_STATISTICAL: ::c_int = 0;
-pub const PR_TIMING_TIMESTAMP: ::c_int = 1;
-
-pub const PR_SET_NAME: ::c_int = 15;
-pub const PR_GET_NAME: ::c_int = 16;
-
-pub const PR_GET_ENDIAN: ::c_int = 19;
-pub const PR_SET_ENDIAN: ::c_int = 20;
-pub const PR_ENDIAN_BIG: ::c_int = 0;
-pub const PR_ENDIAN_LITTLE: ::c_int = 1;
-pub const PR_ENDIAN_PPC_LITTLE: ::c_int = 2;
-
-pub const PR_GET_SECCOMP: ::c_int = 21;
-pub const PR_SET_SECCOMP: ::c_int = 22;
-
-pub const PR_CAPBSET_READ: ::c_int = 23;
-pub const PR_CAPBSET_DROP: ::c_int = 24;
-
-pub const PR_GET_TSC: ::c_int = 25;
-pub const PR_SET_TSC: ::c_int = 26;
-pub const PR_TSC_ENABLE: ::c_int = 1;
-pub const PR_TSC_SIGSEGV: ::c_int = 2;
-
-pub const PR_GET_SECUREBITS: ::c_int = 27;
-pub const PR_SET_SECUREBITS: ::c_int = 28;
-
-pub const PR_SET_TIMERSLACK: ::c_int = 29;
-pub const PR_GET_TIMERSLACK: ::c_int = 30;
-
-pub const PR_TASK_PERF_EVENTS_DISABLE: ::c_int = 31;
-pub const PR_TASK_PERF_EVENTS_ENABLE: ::c_int = 32;
-
-pub const PR_MCE_KILL: ::c_int = 33;
-pub const PR_MCE_KILL_CLEAR: ::c_int = 0;
-pub const PR_MCE_KILL_SET: ::c_int = 1;
-
-pub const PR_MCE_KILL_LATE: ::c_int = 0;
-pub const PR_MCE_KILL_EARLY: ::c_int = 1;
-pub const PR_MCE_KILL_DEFAULT: ::c_int = 2;
-
-pub const PR_MCE_KILL_GET: ::c_int = 34;
-
-pub const PR_SET_MM: ::c_int = 35;
-pub const PR_SET_MM_START_CODE: ::c_int = 1;
-pub const PR_SET_MM_END_CODE: ::c_int = 2;
-pub const PR_SET_MM_START_DATA: ::c_int = 3;
-pub const PR_SET_MM_END_DATA: ::c_int = 4;
-pub const PR_SET_MM_START_STACK: ::c_int = 5;
-pub const PR_SET_MM_START_BRK: ::c_int = 6;
-pub const PR_SET_MM_BRK: ::c_int = 7;
-pub const PR_SET_MM_ARG_START: ::c_int = 8;
-pub const PR_SET_MM_ARG_END: ::c_int = 9;
-pub const PR_SET_MM_ENV_START: ::c_int = 10;
-pub const PR_SET_MM_ENV_END: ::c_int = 11;
-pub const PR_SET_MM_AUXV: ::c_int = 12;
-pub const PR_SET_MM_EXE_FILE: ::c_int = 13;
-pub const PR_SET_MM_MAP: ::c_int = 14;
-pub const PR_SET_MM_MAP_SIZE: ::c_int = 15;
-
-pub const PR_SET_PTRACER: ::c_int = 0x59616d61;
-
-pub const PR_SET_CHILD_SUBREAPER: ::c_int = 36;
-pub const PR_GET_CHILD_SUBREAPER: ::c_int = 37;
-
-pub const PR_SET_NO_NEW_PRIVS: ::c_int = 38;
-pub const PR_GET_NO_NEW_PRIVS: ::c_int = 39;
-
-pub const PR_GET_TID_ADDRESS: ::c_int = 40;
-
-pub const PR_SET_THP_DISABLE: ::c_int = 41;
-pub const PR_GET_THP_DISABLE: ::c_int = 42;
-
-pub const GRND_NONBLOCK: ::c_uint = 0x0001;
-pub const GRND_RANDOM: ::c_uint = 0x0002;
-
-pub const ABDAY_1: ::nl_item = 0x300;
-pub const ABDAY_2: ::nl_item = 0x301;
-pub const ABDAY_3: ::nl_item = 0x302;
-pub const ABDAY_4: ::nl_item = 0x303;
-pub const ABDAY_5: ::nl_item = 0x304;
-pub const ABDAY_6: ::nl_item = 0x305;
-pub const ABDAY_7: ::nl_item = 0x306;
-
-pub const DAY_1: ::nl_item = 0x307;
-pub const DAY_2: ::nl_item = 0x308;
-pub const DAY_3: ::nl_item = 0x309;
-pub const DAY_4: ::nl_item = 0x30A;
-pub const DAY_5: ::nl_item = 0x30B;
-pub const DAY_6: ::nl_item = 0x30C;
-pub const DAY_7: ::nl_item = 0x30D;
-
-pub const ABMON_1: ::nl_item = 0x30E;
-pub const ABMON_2: ::nl_item = 0x30F;
-pub const ABMON_3: ::nl_item = 0x310;
-pub const ABMON_4: ::nl_item = 0x311;
-pub const ABMON_5: ::nl_item = 0x312;
-pub const ABMON_6: ::nl_item = 0x313;
-pub const ABMON_7: ::nl_item = 0x314;
-pub const ABMON_8: ::nl_item = 0x315;
-pub const ABMON_9: ::nl_item = 0x316;
-pub const ABMON_10: ::nl_item = 0x317;
-pub const ABMON_11: ::nl_item = 0x318;
-pub const ABMON_12: ::nl_item = 0x319;
-
-pub const MON_1: ::nl_item = 0x31A;
-pub const MON_2: ::nl_item = 0x31B;
-pub const MON_3: ::nl_item = 0x31C;
-pub const MON_4: ::nl_item = 0x31D;
-pub const MON_5: ::nl_item = 0x31E;
-pub const MON_6: ::nl_item = 0x31F;
-pub const MON_7: ::nl_item = 0x320;
-pub const MON_8: ::nl_item = 0x321;
-pub const MON_9: ::nl_item = 0x322;
-pub const MON_10: ::nl_item = 0x323;
-pub const MON_11: ::nl_item = 0x324;
-pub const MON_12: ::nl_item = 0x325;
-
-pub const AM_STR: ::nl_item = 0x326;
-pub const PM_STR: ::nl_item = 0x327;
-
-pub const D_T_FMT: ::nl_item = 0x328;
-pub const D_FMT: ::nl_item = 0x329;
-pub const T_FMT: ::nl_item = 0x32A;
-pub const T_FMT_AMPM: ::nl_item = 0x32B;
-
-pub const ERA: ::nl_item = 0x32C;
-pub const ERA_D_FMT: ::nl_item = 0x32E;
-pub const ALT_DIGITS: ::nl_item = 0x32F;
-pub const ERA_D_T_FMT: ::nl_item = 0x330;
-pub const ERA_T_FMT: ::nl_item = 0x331;
-
-pub const CODESET: ::nl_item = 10;
-
-pub const CRNCYSTR: ::nl_item = 0x215;
-
-pub const RADIXCHAR: ::nl_item = 0x100;
-pub const THOUSEP: ::nl_item = 0x101;
-
-pub const NOEXPR: ::nl_item = 0x501;
-pub const YESSTR: ::nl_item = 0x502;
-pub const NOSTR: ::nl_item = 0x503;
-
-pub const FILENAME_MAX: ::c_uint = 4095;
-
-pub const PRIO_PROCESS: ::c_int = 0;
-pub const PRIO_PGRP: ::c_int = 1;
-pub const PRIO_USER: ::c_int = 2;
-
-f! {
-    pub fn FD_CLR(fd: ::c_int, set: *mut fd_set) -> () {
-        let fd = fd as usize;
-        let size = ::mem::size_of_val(&(*set).fds_bits[0]) * 8;
-        (*set).fds_bits[fd / size] &= !(1 << (fd % size));
-        return
-    }
-
-    pub fn FD_ISSET(fd: ::c_int, set: *mut fd_set) -> bool {
-        let fd = fd as usize;
-        let size = ::mem::size_of_val(&(*set).fds_bits[0]) * 8;
-        return ((*set).fds_bits[fd / size] & (1 << (fd % size))) != 0
-    }
-
-    pub fn FD_SET(fd: ::c_int, set: *mut fd_set) -> () {
-        let fd = fd as usize;
-        let size = ::mem::size_of_val(&(*set).fds_bits[0]) * 8;
-        (*set).fds_bits[fd / size] |= 1 << (fd % size);
-        return
-    }
-
-    pub fn FD_ZERO(set: *mut fd_set) -> () {
-        for slot in (*set).fds_bits.iter_mut() {
-            *slot = 0;
-        }
-    }
-
-    pub fn CPU_ZERO(cpuset: &mut cpu_set_t) -> () {
-        for slot in cpuset.bits.iter_mut() {
-            *slot = 0;
-        }
-    }
-
-    pub fn CPU_SET(cpu: usize, cpuset: &mut cpu_set_t) -> () {
-        let size_in_bits
-            = 8 * ::mem::size_of_val(&cpuset.bits[0]); // 32, 64 etc
-        let (idx, offset) = (cpu / size_in_bits, cpu % size_in_bits);
-        cpuset.bits[idx] |= 1 << offset;
-        ()
-    }
-
-    pub fn CPU_CLR(cpu: usize, cpuset: &mut cpu_set_t) -> () {
-        let size_in_bits
-            = 8 * ::mem::size_of_val(&cpuset.bits[0]); // 32, 64 etc
-        let (idx, offset) = (cpu / size_in_bits, cpu % size_in_bits);
-        cpuset.bits[idx] &= !(1 << offset);
-        ()
-    }
-
-    pub fn CPU_ISSET(cpu: usize, cpuset: &cpu_set_t) -> bool {
-        let size_in_bits = 8 * ::mem::size_of_val(&cpuset.bits[0]);
-        let (idx, offset) = (cpu / size_in_bits, cpu % size_in_bits);
-        0 != (cpuset.bits[idx] & (1 << offset))
-    }
-
-    pub fn CPU_EQUAL(set1: &cpu_set_t, set2: &cpu_set_t) -> bool {
-        set1.bits == set2.bits
-    }
-}
-
-safe_f! {
-    pub {const} fn WIFSTOPPED(status: ::c_int) -> bool {
-        (status & 0xff) == 0x7f
-    }
-
-    pub {const} fn WSTOPSIG(status: ::c_int) -> ::c_int {
-        (status >> 8) & 0xff
-    }
-
-    pub {const} fn WIFCONTINUED(status: ::c_int) -> bool {
-        status == 0xffff
-    }
-
-    pub {const} fn WIFSIGNALED(status: ::c_int) -> bool {
-        ((status & 0x7f) + 1) as i8 >= 2
-    }
-
-    pub {const} fn WTERMSIG(status: ::c_int) -> ::c_int {
-        status & 0x7f
-    }
-
-    pub {const} fn WIFEXITED(status: ::c_int) -> bool {
-        (status & 0x7f) == 0
-    }
-
-    pub {const} fn WEXITSTATUS(status: ::c_int) -> ::c_int {
-        (status >> 8) & 0xff
-    }
-
-    pub {const} fn WCOREDUMP(status: ::c_int) -> bool {
-        (status & 0x80) != 0
-    }
-
-    pub {const} fn QCMD(cmd: ::c_int, type_: ::c_int) -> ::c_int {
-        (cmd << 8) | (type_ & 0x00ff)
-    }
-}
-
-extern "C" {
-    #[cfg_attr(target_os = "linux", link_name = "__xpg_strerror_r")]
-    pub fn strerror_r(
-        errnum: ::c_int,
-        buf: *mut c_char,
-        buflen: ::size_t,
-    ) -> ::c_int;
-
-    pub fn sem_destroy(sem: *mut sem_t) -> ::c_int;
-    pub fn sem_init(
-        sem: *mut sem_t,
-        pshared: ::c_int,
-        value: ::c_uint,
-    ) -> ::c_int;
-
-    pub fn abs(i: ::c_int) -> ::c_int;
-    pub fn atof(s: *const ::c_char) -> ::c_double;
-    pub fn labs(i: ::c_long) -> ::c_long;
-    pub fn rand() -> ::c_int;
-    pub fn srand(seed: ::c_uint);
-
-    pub fn fdatasync(fd: ::c_int) -> ::c_int;
-    pub fn gettimeofday(tp: *mut ::timeval, tz: *mut ::timezone) -> ::c_int;
-    pub fn mincore(
-        addr: *mut ::c_void,
-        len: ::size_t,
-        vec: *mut ::c_uchar,
-    ) -> ::c_int;
-    pub fn clock_getres(clk_id: ::clockid_t, tp: *mut ::timespec) -> ::c_int;
-    pub fn clock_gettime(clk_id: ::clockid_t, tp: *mut ::timespec) -> ::c_int;
-    pub fn clock_nanosleep(
-        clk_id: ::clockid_t,
-        flags: ::c_int,
-        rqtp: *const ::timespec,
-        rmtp: *mut ::timespec,
-    ) -> ::c_int;
-    pub fn clock_settime(
-        clk_id: ::clockid_t,
-        tp: *const ::timespec,
-    ) -> ::c_int;
-    pub fn prctl(option: ::c_int, ...) -> ::c_int;
-    pub fn pthread_getattr_np(
-        native: ::pthread_t,
-        attr: *mut ::pthread_attr_t,
-    ) -> ::c_int;
-    pub fn pthread_attr_getguardsize(
-        attr: *const ::pthread_attr_t,
-        guardsize: *mut ::size_t,
-    ) -> ::c_int;
-    pub fn pthread_attr_getstack(
-        attr: *const ::pthread_attr_t,
-        stackaddr: *mut *mut ::c_void,
-        stacksize: *mut ::size_t,
-    ) -> ::c_int;
-    pub fn memalign(align: ::size_t, size: ::size_t) -> *mut ::c_void;
-    pub fn setgroups(ngroups: ::size_t, ptr: *const ::gid_t) -> ::c_int;
-    pub fn initgroups(user: *const ::c_char, group: ::gid_t) -> ::c_int;
-    pub fn sched_setscheduler(
-        pid: ::pid_t,
-        policy: ::c_int,
-        param: *const ::sched_param,
-    ) -> ::c_int;
-    pub fn sched_getscheduler(pid: ::pid_t) -> ::c_int;
-    pub fn sched_get_priority_max(policy: ::c_int) -> ::c_int;
-    pub fn sched_get_priority_min(policy: ::c_int) -> ::c_int;
-    pub fn epoll_create(size: ::c_int) -> ::c_int;
-    pub fn epoll_create1(flags: ::c_int) -> ::c_int;
-    pub fn epoll_ctl(
-        epfd: ::c_int,
-        op: ::c_int,
-        fd: ::c_int,
-        event: *mut ::epoll_event,
-    ) -> ::c_int;
-    pub fn epoll_wait(
-        epfd: ::c_int,
-        events: *mut ::epoll_event,
-        maxevents: ::c_int,
-        timeout: ::c_int,
-    ) -> ::c_int;
-    pub fn pipe2(fds: *mut ::c_int, flags: ::c_int) -> ::c_int;
-    pub fn mount(
-        src: *const ::c_char,
-        target: *const ::c_char,
-        fstype: *const ::c_char,
-        flags: ::c_ulong,
-        data: *const ::c_void,
-    ) -> ::c_int;
-    pub fn umount(target: *const ::c_char) -> ::c_int;
-    pub fn umount2(target: *const ::c_char, flags: ::c_int) -> ::c_int;
-    pub fn clone(
-        cb: extern "C" fn(*mut ::c_void) -> ::c_int,
-        child_stack: *mut ::c_void,
-        flags: ::c_int,
-        arg: *mut ::c_void,
-        ...
-    ) -> ::c_int;
-    pub fn statfs(path: *const ::c_char, buf: *mut statfs) -> ::c_int;
-    pub fn fstatfs(fd: ::c_int, buf: *mut statfs) -> ::c_int;
-    pub fn memrchr(
-        cx: *const ::c_void,
-        c: ::c_int,
-        n: ::size_t,
-    ) -> *mut ::c_void;
-    pub fn syscall(num: ::c_long, ...) -> ::c_long;
-    pub fn sendfile(
-        out_fd: ::c_int,
-        in_fd: ::c_int,
-        offset: *mut off_t,
-        count: ::size_t,
-    ) -> ::ssize_t;
-    pub fn splice(
-        fd_in: ::c_int,
-        off_in: *mut ::loff_t,
-        fd_out: ::c_int,
-        off_out: *mut ::loff_t,
-        len: ::size_t,
-        flags: ::c_uint,
-    ) -> ::ssize_t;
-    pub fn tee(
-        fd_in: ::c_int,
-        fd_out: ::c_int,
-        len: ::size_t,
-        flags: ::c_uint,
-    ) -> ::ssize_t;
-    pub fn vmsplice(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        nr_segs: ::size_t,
-        flags: ::c_uint,
-    ) -> ::ssize_t;
-
-    pub fn posix_fadvise(
-        fd: ::c_int,
-        offset: ::off_t,
-        len: ::off_t,
-        advise: ::c_int,
-    ) -> ::c_int;
-    pub fn getrlimit(resource: ::c_int, rlim: *mut ::rlimit) -> ::c_int;
-    pub fn setrlimit(resource: ::c_int, rlim: *const ::rlimit) -> ::c_int;
-    pub fn futimens(fd: ::c_int, times: *const ::timespec) -> ::c_int;
-    pub fn utimensat(
-        dirfd: ::c_int,
-        path: *const ::c_char,
-        times: *const ::timespec,
-        flag: ::c_int,
-    ) -> ::c_int;
-    pub fn duplocale(base: ::locale_t) -> ::locale_t;
-    pub fn freelocale(loc: ::locale_t);
-    pub fn newlocale(
-        mask: ::c_int,
-        locale: *const ::c_char,
-        base: ::locale_t,
-    ) -> ::locale_t;
-    pub fn uselocale(loc: ::locale_t) -> ::locale_t;
-    pub fn creat64(path: *const c_char, mode: mode_t) -> ::c_int;
-    pub fn fstat64(fildes: ::c_int, buf: *mut stat64) -> ::c_int;
-    pub fn fstatat64(
-        fildes: ::c_int,
-        path: *const ::c_char,
-        buf: *mut stat64,
-        flag: ::c_int,
-    ) -> ::c_int;
-    pub fn ftruncate64(fd: ::c_int, length: off64_t) -> ::c_int;
-    pub fn getrlimit64(resource: ::c_int, rlim: *mut rlimit64) -> ::c_int;
-    pub fn lseek64(fd: ::c_int, offset: off64_t, whence: ::c_int) -> off64_t;
-    pub fn lstat64(path: *const c_char, buf: *mut stat64) -> ::c_int;
-    pub fn mmap64(
-        addr: *mut ::c_void,
-        len: ::size_t,
-        prot: ::c_int,
-        flags: ::c_int,
-        fd: ::c_int,
-        offset: off64_t,
-    ) -> *mut ::c_void;
-    pub fn open64(path: *const c_char, oflag: ::c_int, ...) -> ::c_int;
-    pub fn openat64(
-        fd: ::c_int,
-        path: *const c_char,
-        oflag: ::c_int,
-        ...
-    ) -> ::c_int;
-    pub fn pread64(
-        fd: ::c_int,
-        buf: *mut ::c_void,
-        count: ::size_t,
-        offset: off64_t,
-    ) -> ::ssize_t;
-    pub fn pwrite64(
-        fd: ::c_int,
-        buf: *const ::c_void,
-        count: ::size_t,
-        offset: off64_t,
-    ) -> ::ssize_t;
-    pub fn readdir64(dirp: *mut ::DIR) -> *mut ::dirent64;
-    pub fn readdir64_r(
-        dirp: *mut ::DIR,
-        entry: *mut ::dirent64,
-        result: *mut *mut ::dirent64,
-    ) -> ::c_int;
-    pub fn setrlimit64(resource: ::c_int, rlim: *const rlimit64) -> ::c_int;
-    pub fn stat64(path: *const c_char, buf: *mut stat64) -> ::c_int;
-    pub fn truncate64(path: *const c_char, length: off64_t) -> ::c_int;
-    pub fn eventfd(init: ::c_uint, flags: ::c_int) -> ::c_int;
-
-    pub fn mknodat(
-        dirfd: ::c_int,
-        pathname: *const ::c_char,
-        mode: ::mode_t,
-        dev: dev_t,
-    ) -> ::c_int;
-    pub fn ppoll(
-        fds: *mut ::pollfd,
-        nfds: nfds_t,
-        timeout: *const ::timespec,
-        sigmask: *const sigset_t,
-    ) -> ::c_int;
-    pub fn pthread_condattr_getclock(
-        attr: *const pthread_condattr_t,
-        clock_id: *mut clockid_t,
-    ) -> ::c_int;
-    pub fn pthread_condattr_setclock(
-        attr: *mut pthread_condattr_t,
-        clock_id: ::clockid_t,
-    ) -> ::c_int;
-    pub fn pthread_condattr_setpshared(
-        attr: *mut pthread_condattr_t,
-        pshared: ::c_int,
-    ) -> ::c_int;
-    pub fn pthread_condattr_getpshared(
-        attr: *const pthread_condattr_t,
-        pshared: *mut ::c_int,
-    ) -> ::c_int;
-    pub fn sched_getaffinity(
-        pid: ::pid_t,
-        cpusetsize: ::size_t,
-        cpuset: *mut cpu_set_t,
-    ) -> ::c_int;
-    pub fn sched_setaffinity(
-        pid: ::pid_t,
-        cpusetsize: ::size_t,
-        cpuset: *const cpu_set_t,
-    ) -> ::c_int;
-    pub fn unshare(flags: ::c_int) -> ::c_int;
-    pub fn sem_timedwait(
-        sem: *mut sem_t,
-        abstime: *const ::timespec,
-    ) -> ::c_int;
-    pub fn sem_getvalue(sem: *mut sem_t, sval: *mut ::c_int) -> ::c_int;
-    pub fn accept4(
-        fd: ::c_int,
-        addr: *mut ::sockaddr,
-        len: *mut ::socklen_t,
-        flg: ::c_int,
-    ) -> ::c_int;
-    pub fn pthread_mutex_timedlock(
-        lock: *mut pthread_mutex_t,
-        abstime: *const ::timespec,
-    ) -> ::c_int;
-    pub fn pthread_mutexattr_setpshared(
-        attr: *mut pthread_mutexattr_t,
-        pshared: ::c_int,
-    ) -> ::c_int;
-    pub fn pthread_mutexattr_getpshared(
-        attr: *const pthread_mutexattr_t,
-        pshared: *mut ::c_int,
-    ) -> ::c_int;
-    pub fn pthread_rwlockattr_getkind_np(
-        attr: *const pthread_rwlockattr_t,
-        val: *mut ::c_int,
-    ) -> ::c_int;
-    pub fn pthread_rwlockattr_setkind_np(
-        attr: *mut pthread_rwlockattr_t,
-        val: ::c_int,
-    ) -> ::c_int;
-    pub fn pthread_rwlockattr_getpshared(
-        attr: *const pthread_rwlockattr_t,
-        val: *mut ::c_int,
-    ) -> ::c_int;
-    pub fn pthread_rwlockattr_setpshared(
-        attr: *mut pthread_rwlockattr_t,
-        val: ::c_int,
-    ) -> ::c_int;
-    pub fn ptsname_r(
-        fd: ::c_int,
-        buf: *mut ::c_char,
-        buflen: ::size_t,
-    ) -> ::c_int;
-    pub fn clearenv() -> ::c_int;
-    pub fn waitid(
-        idtype: idtype_t,
-        id: id_t,
-        infop: *mut ::siginfo_t,
-        options: ::c_int,
-    ) -> ::c_int;
-
-    pub fn lutimes(file: *const ::c_char, times: *const ::timeval) -> ::c_int;
-
-    pub fn setpwent();
-    pub fn endpwent();
-    pub fn getpwent() -> *mut passwd;
-    pub fn setspent();
-    pub fn endspent();
-    pub fn getspent() -> *mut spwd;
-    pub fn getspnam(__name: *const ::c_char) -> *mut spwd;
-
-    pub fn shm_open(
-        name: *const c_char,
-        oflag: ::c_int,
-        mode: mode_t,
-    ) -> ::c_int;
-
-    // System V IPC
-    pub fn shmget(key: ::key_t, size: ::size_t, shmflg: ::c_int) -> ::c_int;
-    pub fn shmat(
-        shmid: ::c_int,
-        shmaddr: *const ::c_void,
-        shmflg: ::c_int,
-    ) -> *mut ::c_void;
-    pub fn shmdt(shmaddr: *const ::c_void) -> ::c_int;
-    pub fn shmctl(
-        shmid: ::c_int,
-        cmd: ::c_int,
-        buf: *mut ::shmid_ds,
-    ) -> ::c_int;
-    pub fn ftok(pathname: *const ::c_char, proj_id: ::c_int) -> ::key_t;
-    pub fn msgctl(msqid: ::c_int, cmd: ::c_int, buf: *mut msqid_ds)
-        -> ::c_int;
-    pub fn msgget(key: ::key_t, msgflg: ::c_int) -> ::c_int;
-    pub fn msgrcv(
-        msqid: ::c_int,
-        msgp: *mut ::c_void,
-        msgsz: ::size_t,
-        msgtyp: ::c_long,
-        msgflg: ::c_int,
-    ) -> ::ssize_t;
-    pub fn msgsnd(
-        msqid: ::c_int,
-        msgp: *const ::c_void,
-        msgsz: ::size_t,
-        msgflg: ::c_int,
-    ) -> ::c_int;
-
-    pub fn mprotect(
-        addr: *mut ::c_void,
-        len: ::size_t,
-        prot: ::c_int,
-    ) -> ::c_int;
-    pub fn __errno_location() -> *mut ::c_int;
-
-    pub fn fopen64(
-        filename: *const c_char,
-        mode: *const c_char,
-    ) -> *mut ::FILE;
-    pub fn freopen64(
-        filename: *const c_char,
-        mode: *const c_char,
-        file: *mut ::FILE,
-    ) -> *mut ::FILE;
-    pub fn tmpfile64() -> *mut ::FILE;
-    pub fn fgetpos64(stream: *mut ::FILE, ptr: *mut fpos64_t) -> ::c_int;
-    pub fn fsetpos64(stream: *mut ::FILE, ptr: *const fpos64_t) -> ::c_int;
-    pub fn fseeko64(
-        stream: *mut ::FILE,
-        offset: ::off64_t,
-        whence: ::c_int,
-    ) -> ::c_int;
-    pub fn ftello64(stream: *mut ::FILE) -> ::off64_t;
-    pub fn readahead(
-        fd: ::c_int,
-        offset: ::off64_t,
-        count: ::size_t,
-    ) -> ::ssize_t;
-    pub fn getxattr(
-        path: *const c_char,
-        name: *const c_char,
-        value: *mut ::c_void,
-        size: ::size_t,
-    ) -> ::ssize_t;
-    pub fn lgetxattr(
-        path: *const c_char,
-        name: *const c_char,
-        value: *mut ::c_void,
-        size: ::size_t,
-    ) -> ::ssize_t;
-    pub fn fgetxattr(
-        filedes: ::c_int,
-        name: *const c_char,
-        value: *mut ::c_void,
-        size: ::size_t,
-    ) -> ::ssize_t;
-    pub fn setxattr(
-        path: *const c_char,
-        name: *const c_char,
-        value: *const ::c_void,
-        size: ::size_t,
-        flags: ::c_int,
-    ) -> ::c_int;
-    pub fn lsetxattr(
-        path: *const c_char,
-        name: *const c_char,
-        value: *const ::c_void,
-        size: ::size_t,
-        flags: ::c_int,
-    ) -> ::c_int;
-    pub fn fsetxattr(
-        filedes: ::c_int,
-        name: *const c_char,
-        value: *const ::c_void,
-        size: ::size_t,
-        flags: ::c_int,
-    ) -> ::c_int;
-    pub fn listxattr(
-        path: *const c_char,
-        list: *mut c_char,
-        size: ::size_t,
-    ) -> ::ssize_t;
-    pub fn llistxattr(
-        path: *const c_char,
-        list: *mut c_char,
-        size: ::size_t,
-    ) -> ::ssize_t;
-    pub fn flistxattr(
-        filedes: ::c_int,
-        list: *mut c_char,
-        size: ::size_t,
-    ) -> ::ssize_t;
-    pub fn removexattr(path: *const c_char, name: *const c_char) -> ::c_int;
-    pub fn lremovexattr(path: *const c_char, name: *const c_char) -> ::c_int;
-    pub fn fremovexattr(filedes: ::c_int, name: *const c_char) -> ::c_int;
-    pub fn signalfd(
-        fd: ::c_int,
-        mask: *const ::sigset_t,
-        flags: ::c_int,
-    ) -> ::c_int;
-    pub fn quotactl(
-        cmd: ::c_int,
-        special: *const ::c_char,
-        id: ::c_int,
-        data: *mut ::c_char,
-    ) -> ::c_int;
-    pub fn mq_open(name: *const ::c_char, oflag: ::c_int, ...) -> ::mqd_t;
-    pub fn mq_close(mqd: ::mqd_t) -> ::c_int;
-    pub fn mq_unlink(name: *const ::c_char) -> ::c_int;
-    pub fn mq_receive(
-        mqd: ::mqd_t,
-        msg_ptr: *mut ::c_char,
-        msg_len: ::size_t,
-        msg_prio: *mut ::c_uint,
-    ) -> ::ssize_t;
-    pub fn mq_send(
-        mqd: ::mqd_t,
-        msg_ptr: *const ::c_char,
-        msg_len: ::size_t,
-        msg_prio: ::c_uint,
-    ) -> ::c_int;
-    pub fn mq_getattr(mqd: ::mqd_t, attr: *mut ::mq_attr) -> ::c_int;
-    pub fn mq_setattr(
-        mqd: ::mqd_t,
-        newattr: *const ::mq_attr,
-        oldattr: *mut ::mq_attr,
-    ) -> ::c_int;
-    pub fn epoll_pwait(
-        epfd: ::c_int,
-        events: *mut ::epoll_event,
-        maxevents: ::c_int,
-        timeout: ::c_int,
-        sigmask: *const ::sigset_t,
-    ) -> ::c_int;
-    pub fn sethostname(name: *const ::c_char, len: ::size_t) -> ::c_int;
-    pub fn sigtimedwait(
-        set: *const sigset_t,
-        info: *mut siginfo_t,
-        timeout: *const ::timespec,
-    ) -> ::c_int;
-    pub fn sigwaitinfo(set: *const sigset_t, info: *mut siginfo_t) -> ::c_int;
-    pub fn nl_langinfo_l(item: ::nl_item, locale: ::locale_t)
-        -> *mut ::c_char;
-    pub fn prlimit(
-        pid: ::pid_t,
-        resource: ::c_int,
-        new_limit: *const ::rlimit,
-        old_limit: *mut ::rlimit,
-    ) -> ::c_int;
-    pub fn prlimit64(
-        pid: ::pid_t,
-        resource: ::c_int,
-        new_limit: *const ::rlimit64,
-        old_limit: *mut ::rlimit64,
-    ) -> ::c_int;
-    pub fn reboot(how_to: ::c_int) -> ::c_int;
-    pub fn setfsgid(gid: ::gid_t) -> ::c_int;
-    pub fn setfsuid(uid: ::uid_t) -> ::c_int;
-    pub fn setresgid(rgid: ::gid_t, egid: ::gid_t, sgid: ::gid_t) -> ::c_int;
-    pub fn setresuid(ruid: ::uid_t, euid: ::uid_t, suid: ::uid_t) -> ::c_int;
-
-    // Not available now on Android
-    pub fn mkfifoat(
-        dirfd: ::c_int,
-        pathname: *const ::c_char,
-        mode: ::mode_t,
-    ) -> ::c_int;
-    pub fn if_nameindex() -> *mut if_nameindex;
-    pub fn if_freenameindex(ptr: *mut if_nameindex);
-    pub fn sync_file_range(
-        fd: ::c_int,
-        offset: ::off64_t,
-        nbytes: ::off64_t,
-        flags: ::c_uint,
-    ) -> ::c_int;
-    pub fn getifaddrs(ifap: *mut *mut ::ifaddrs) -> ::c_int;
-    pub fn freeifaddrs(ifa: *mut ::ifaddrs);
-
-    pub fn mremap(
-        addr: *mut ::c_void,
-        len: ::size_t,
-        new_len: ::size_t,
-        flags: ::c_int,
-        ...
-    ) -> *mut ::c_void;
-
-    pub fn glob(
-        pattern: *const c_char,
-        flags: ::c_int,
-        errfunc: ::Option<
-            extern "C" fn(epath: *const c_char, errno: ::c_int) -> ::c_int,
-        >,
-        pglob: *mut ::glob_t,
-    ) -> ::c_int;
-    pub fn globfree(pglob: *mut ::glob_t);
-
-    pub fn shm_unlink(name: *const ::c_char) -> ::c_int;
-
-    pub fn seekdir(dirp: *mut ::DIR, loc: ::c_long);
-
-    pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
-
-    pub fn telldir(dirp: *mut ::DIR) -> ::c_long;
-    pub fn madvise(
-        addr: *mut ::c_void,
-        len: ::size_t,
-        advice: ::c_int,
-    ) -> ::c_int;
-
-    pub fn msync(
-        addr: *mut ::c_void,
-        len: ::size_t,
-        flags: ::c_int,
-    ) -> ::c_int;
-
-    pub fn recvfrom(
-        socket: ::c_int,
-        buf: *mut ::c_void,
-        len: ::size_t,
-        flags: ::c_int,
-        addr: *mut ::sockaddr,
-        addrlen: *mut ::socklen_t,
-    ) -> ::ssize_t;
-    pub fn nl_langinfo(item: ::nl_item) -> *mut ::c_char;
-
-    pub fn bind(
-        socket: ::c_int,
-        address: *const ::sockaddr,
-        address_len: ::socklen_t,
-    ) -> ::c_int;
-
-    pub fn writev(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        iovcnt: ::c_int,
-    ) -> ::ssize_t;
-    pub fn readv(
-        fd: ::c_int,
-        iov: *const ::iovec,
-        iovcnt: ::c_int,
-    ) -> ::ssize_t;
-
-    pub fn sendmsg(
-        fd: ::c_int,
-        msg: *const ::msghdr,
-        flags: ::c_int,
-    ) -> ::ssize_t;
-    pub fn recvmsg(
-        fd: ::c_int,
-        msg: *mut ::msghdr,
-        flags: ::c_int,
-    ) -> ::ssize_t;
-    pub fn getgrgid_r(
-        gid: ::gid_t,
-        grp: *mut ::group,
-        buf: *mut ::c_char,
-        buflen: ::size_t,
-        result: *mut *mut ::group,
-    ) -> ::c_int;
-    pub fn sigaltstack(ss: *const stack_t, oss: *mut stack_t) -> ::c_int;
-    pub fn sem_close(sem: *mut sem_t) -> ::c_int;
-    pub fn getdtablesize() -> ::c_int;
-    pub fn getgrnam_r(
-        name: *const ::c_char,
-        grp: *mut ::group,
-        buf: *mut ::c_char,
-        buflen: ::size_t,
-        result: *mut *mut ::group,
-    ) -> ::c_int;
-    pub fn pthread_sigmask(
-        how: ::c_int,
-        set: *const sigset_t,
-        oldset: *mut sigset_t,
-    ) -> ::c_int;
-    pub fn sem_open(name: *const ::c_char, oflag: ::c_int, ...) -> *mut sem_t;
-    pub fn getgrnam(name: *const ::c_char) -> *mut ::group;
-    pub fn pthread_kill(thread: ::pthread_t, sig: ::c_int) -> ::c_int;
-    pub fn sem_unlink(name: *const ::c_char) -> ::c_int;
-    pub fn daemon(nochdir: ::c_int, noclose: ::c_int) -> ::c_int;
-    pub fn getpwnam_r(
-        name: *const ::c_char,
-        pwd: *mut passwd,
-        buf: *mut ::c_char,
-        buflen: ::size_t,
-        result: *mut *mut passwd,
-    ) -> ::c_int;
-    pub fn getpwuid_r(
-        uid: ::uid_t,
-        pwd: *mut passwd,
-        buf: *mut ::c_char,
-        buflen: ::size_t,
-        result: *mut *mut passwd,
-    ) -> ::c_int;
-    pub fn sigwait(set: *const sigset_t, sig: *mut ::c_int) -> ::c_int;
-    pub fn pthread_atfork(
-        prepare: ::Option<unsafe extern "C" fn()>,
-        parent: ::Option<unsafe extern "C" fn()>,
-        child: ::Option<unsafe extern "C" fn()>,
-    ) -> ::c_int;
-    pub fn pthread_create(
-        native: *mut ::pthread_t,
-        attr: *const ::pthread_attr_t,
-        f: extern "C" fn(*mut ::c_void) -> *mut ::c_void,
-        value: *mut ::c_void,
-    ) -> ::c_int;
-    pub fn dl_iterate_phdr(
-        callback: ::Option<
-            unsafe extern "C" fn(
-                info: *mut ::dl_phdr_info,
-                size: ::size_t,
-                data: *mut ::c_void,
-            ) -> ::c_int,
-        >,
-        data: *mut ::c_void,
-    ) -> ::c_int;
-    pub fn getgrgid(gid: ::gid_t) -> *mut ::group;
-    pub fn popen(command: *const c_char, mode: *const c_char) -> *mut ::FILE;
-    pub fn uname(buf: *mut ::utsname) -> ::c_int;
-    pub fn getnameinfo(
-        sa: *const ::sockaddr,
-        salen: ::socklen_t,
-        host: *mut ::c_char,
-        hostlen: ::socklen_t,
-        serv: *mut ::c_char,
-        sevlen: ::socklen_t,
-        flags: ::c_int,
-    ) -> ::c_int;
-}
-
-cfg_if! {
-    if #[cfg(any(target_arch = "mips", target_arch = "mips64"))] {
-        mod mips;
-        pub use self::mips::*;
-    } else if #[cfg(target_arch = "x86_64")] {
-        mod x86_64;
-        pub use self::x86_64::*;
-    } else if #[cfg(target_arch = "arm")] {
-        mod arm;
-        pub use self::arm::*;
-    } else {
-        pub use unsupported_target;
-    }
-}
-
-cfg_if! {
-    if #[cfg(libc_align)] {
-        #[macro_use]
-        mod align;
-    } else {
-        #[macro_use]
-        mod no_align;
-    }
-}
-
-expand_align!();
diff --git a/src/unix/uclibc/x86_64/align.rs b/src/unix/uclibc/x86_64/align.rs
deleted file mode 100644
index e2d829b507735..0000000000000
--- a/src/unix/uclibc/x86_64/align.rs
+++ /dev/null
@@ -1,77 +0,0 @@
-macro_rules! expand_align {
-    () => {
-        s! {
-            #[cfg_attr(target_pointer_width = "32",
-                       repr(align(4)))]
-            #[cfg_attr(target_pointer_width = "64",
-                       repr(align(8)))]
-            pub struct sem_t { // FIXME
-                #[cfg(target_pointer_width = "32")]
-                __size: [::c_char; 16],
-                #[cfg(target_pointer_width = "64")]
-                __size: [::c_char; 32],
-            }
-
-            #[cfg_attr(any(target_pointer_width = "32",
-                           target_arch = "x86_64",
-                           target_arch = "powerpc64",
-                           target_arch = "mips64",
-                           target_arch = "s390x",
-                           target_arch = "sparc64"),
-                       repr(align(4)))]
-            #[cfg_attr(not(any(target_pointer_width = "32",
-                               target_arch = "x86_64",
-                               target_arch = "powerpc64",
-                               target_arch = "mips64",
-                               target_arch = "s390x",
-                               target_arch = "sparc64")),
-                       repr(align(8)))]
-            pub struct pthread_mutexattr_t { // FIXME
-                size: [u8; ::__SIZEOF_PTHREAD_MUTEXATTR_T],
-            }
-
-            #[repr(align(4))]
-            pub struct pthread_condattr_t { // FIXME
-                size: [u8; ::__SIZEOF_PTHREAD_CONDATTR_T],
-            }
-        }
-
-        s_no_extra_traits! {
-            #[cfg_attr(all(target_pointer_width = "32",
-                           any(target_arch = "mips",
-                               target_arch = "arm",
-                               target_arch = "powerpc")),
-                       repr(align(4)))]
-            #[cfg_attr(all(any(target_pointer_width = "64",
-                               not(any(target_arch = "mips",
-                                       target_arch = "arm",
-                                       target_arch = "powerpc")))),
-                       repr(align(8)))]
-            #[allow(missing_debug_implementations)]
-            pub struct pthread_mutex_t { // FIXME
-                size: [u8; ::__SIZEOF_PTHREAD_MUTEX_T],
-            }
-
-            #[repr(align(8))]
-            #[allow(missing_debug_implementations)]
-            pub struct pthread_cond_t { // FIXME
-                size: [u8; ::__SIZEOF_PTHREAD_COND_T],
-            }
-
-            #[cfg_attr(all(target_pointer_width = "32",
-                           any(target_arch = "mips",
-                               target_arch = "arm",
-                               target_arch = "powerpc")),
-                       repr(align(4)))]
-            #[cfg_attr(any(target_pointer_width = "64",
-                           not(any(target_arch = "mips",
-                                   target_arch = "arm",
-                                   target_arch = "powerpc"))),
-                       repr(align(8)))]
-            #[allow(missing_debug_implementations)]
-            pub struct pthread_rwlock_t { // FIXME
-                size: [u8; ::__SIZEOF_PTHREAD_RWLOCK_T],
-            }
-        }
-    };
-}
diff --git a/src/unix/uclibc/x86_64/no_align.rs b/src/unix/uclibc/x86_64/no_align.rs
deleted file mode 100644
index ffa4e523f215b..0000000000000
--- a/src/unix/uclibc/x86_64/no_align.rs
+++ /dev/null
@@ -1,59 +0,0 @@
-macro_rules! expand_align {
-    () => {
-        s! {
-            pub struct sem_t { // FIXME
-                #[cfg(target_pointer_width = "32")]
-                __size: [::c_char; 16],
-                #[cfg(target_pointer_width = "64")]
-                __size: [::c_char; 32],
-                __align: [::c_long; 0],
-            }
-
-            pub struct pthread_mutex_t { // FIXME
-                #[cfg(any(target_arch = "mips",
-                          target_arch = "arm",
-                          target_arch = "powerpc"))]
-                __align: [::c_long; 0],
-                #[cfg(not(any(target_arch = "mips",
-                              target_arch = "arm",
-                              target_arch = "powerpc")))]
-                __align: [::c_longlong; 0],
-                size: [u8; ::__SIZEOF_PTHREAD_MUTEX_T],
-            }
-
-            pub struct pthread_mutexattr_t { // FIXME
-                #[cfg(any(target_arch = "x86_64", target_arch = "powerpc64",
-                          target_arch = "mips64", target_arch = "s390x",
-                          target_arch = "sparc64"))]
-                __align: [::c_int; 0],
-                #[cfg(not(any(target_arch = "x86_64", target_arch = "powerpc64",
-                              target_arch = "mips64", target_arch = "s390x",
-                              target_arch = "sparc64")))]
-                __align: [::c_long; 0],
-                size: [u8; ::__SIZEOF_PTHREAD_MUTEXATTR_T],
-            }
-
-            pub struct pthread_cond_t { // FIXME
-                __align: [::c_longlong; 0],
-                size: [u8; ::__SIZEOF_PTHREAD_COND_T],
-            }
-
-            pub struct pthread_condattr_t { // FIXME
-                __align: [::c_int; 0],
-                size: [u8; ::__SIZEOF_PTHREAD_CONDATTR_T],
-            }
-
-            pub struct pthread_rwlock_t { // FIXME
-                #[cfg(any(target_arch = "mips",
-                          target_arch = "arm",
-                          target_arch = "powerpc"))]
-                __align: [::c_long; 0],
-                #[cfg(not(any(target_arch = "mips",
-                              target_arch = "arm",
-                              target_arch = "powerpc")))]
-                __align: [::c_longlong; 0],
-                size: [u8; ::__SIZEOF_PTHREAD_RWLOCK_T],
-            }
-        }
-    }
-}