Auto merge of #2899 - devnexen:linux_fileclone, r=JohnTitor

linux add FICLONE* ioctl.

Author: bors

libc-test/semver/linux.txt

@@ -717,6 +717,8 @@ FF1
 FFDLY
 FF_CNT
 FF_MAX
+FICLONE
+FICLONERANGE
 FILENAME_MAX
 FIONCLEX
 FIONREAD
@@ -2909,6 +2911,7 @@ ff_rumble_effect
 ff_trigger
 fgetpos64
 fgetxattr
+file_clone_range
 flistxattr
 fmemopen
 fopen64

src/unix/linux_like/linux/mod.rs

@@ -596,6 +596,13 @@ s! {
         pub nla_len: u16,
         pub nla_type: u16,
     }
+
+    pub struct file_clone_range {
+        pub src_fd: ::__s64,
+        pub src_offset: ::__u64,
+        pub src_length: ::__u64,
+        pub dest_offset: ::__u64,
+    }
 }
 
 s_no_extra_traits! {
@@ -2380,6 +2387,11 @@ pub const NFQA_SKB_CSUMNOTREADY: ::c_int = 0x0001;
 pub const NFQA_SKB_GSO: ::c_int = 0x0002;
 pub const NFQA_SKB_CSUM_NOTVERIFIED: ::c_int = 0x0004;
 
+// linux/fs.h
+
+pub const FICLONE: ::c_ulong = 0x40049409;
+pub const FICLONERANGE: ::c_ulong = 0x4020940D;
+
 // linux/genetlink.h
 
 pub const GENL_NAMSIZ: ::c_int = 16;

src/unix/linux_like/linux/musl/b32/mod.rs

@@ -3,6 +3,7 @@ pub type c_ulong = u32;
 pub type nlink_t = u32;
 pub type blksize_t = ::c_long;
 pub type __u64 = ::c_ulonglong;
+pub type __s64 = ::c_longlong;
 pub type regoff_t = ::c_int;
 
 s! {

src/unix/linux_like/linux/musl/b64/aarch64/mod.rs

@@ -1,5 +1,6 @@
 pub type c_char = u8;
 pub type __u64 = ::c_ulonglong;
+pub type __s64 = ::c_ulonglong;
 pub type wchar_t = u32;
 pub type nlink_t = u32;
 pub type blksize_t = ::c_int;

src/unix/linux_like/linux/musl/b64/mips64.rs

@@ -1,6 +1,7 @@
 pub type c_char = i8;
 pub type wchar_t = i32;
 pub type __u64 = ::c_ulong;
+pub type __s64 = ::c_long;
 pub type nlink_t = u64;
 pub type blksize_t = i64;
 

src/unix/linux_like/linux/musl/b64/powerpc64.rs

@@ -1,6 +1,7 @@
 pub type c_char = u8;
 pub type wchar_t = i32;
 pub type __u64 = ::c_ulong;
+pub type __s64 = ::c_long;
 pub type nlink_t = u64;
 pub type blksize_t = ::c_long;
 

src/unix/linux_like/linux/musl/b64/riscv64/mod.rs

@@ -8,6 +8,7 @@ pub type blksize_t = ::c_int;
 pub type fsblkcnt64_t = ::c_ulong;
 pub type fsfilcnt64_t = ::c_ulong;
 pub type __u64 = ::c_ulonglong;
+pub type __s64 = ::c_longlong;
 
 s! {
     pub struct pthread_attr_t {

src/unix/linux_like/linux/musl/b64/s390x.rs

@@ -4,6 +4,7 @@ pub type nlink_t = u64;
 pub type wchar_t = i32;
 pub type greg_t = u64;
 pub type __u64 = u64;
+pub type __s64 = i64;
 
 s! {
     pub struct ipc_perm {

src/unix/linux_like/linux/musl/b64/x86_64/mod.rs

@@ -3,6 +3,7 @@ pub type wchar_t = i32;
 pub type nlink_t = u64;
 pub type blksize_t = ::c_long;
 pub type __u64 = ::c_ulonglong;
+pub type __s64 = ::c_ulonglong;
 pub type greg_t = i64;
 
 s! {