Source reorganization of Android socket.h

Create a bionic module and move some things over from `linux_like`.

Source: https://cs.android.com/android/platform/superproject/main/+/main:bionic/libc/include/sys/socket.h;drc=dc6e2fb4857f05bfee435cfd4f3859e74c746811

(backport <#4541>)
(cherry picked from commit bce7db1)

Author: tgross35

src/new/bionic/mod.rs

@@ -0,0 +1,2 @@
+mod sys;
+pub use sys::*;

src/new/bionic/sys/mod.rs

@@ -0,0 +1,2 @@
+mod socket;
+pub use socket::*;

src/new/bionic/sys/socket.rs

@@ -0,0 +1,51 @@
+//! Header: `bionic/libc/include/sys/socket.h`
+
+use crate::prelude::*;
+
+s! {
+    pub struct msghdr {
+        pub msg_name: *mut c_void,
+        pub msg_namelen: crate::socklen_t,
+        pub msg_iov: *mut crate::iovec,
+        pub msg_iovlen: size_t,
+        pub msg_control: *mut c_void,
+        pub msg_controllen: size_t,
+        pub msg_flags: c_int,
+    }
+
+    pub struct cmsghdr {
+        pub cmsg_len: size_t,
+        pub cmsg_level: c_int,
+        pub cmsg_type: c_int,
+    }
+
+    pub struct ucred {
+        pub pid: crate::pid_t,
+        pub uid: crate::uid_t,
+        pub gid: crate::gid_t,
+    }
+}
+
+extern "C" {
+    pub fn recvmmsg(
+        sockfd: c_int,
+        msgvec: *mut crate::mmsghdr,
+        vlen: c_uint,
+        flags: c_int,
+        timeout: *const crate::timespec,
+    ) -> c_int;
+    pub fn sendmmsg(
+        sockfd: c_int,
+        msgvec: *const crate::mmsghdr,
+        vlen: c_uint,
+        flags: c_int,
+    ) -> c_int;
+    pub fn recvfrom(
+        socket: c_int,
+        buf: *mut c_void,
+        len: size_t,
+        flags: c_int,
+        addr: *mut crate::sockaddr,
+        addrlen: *mut crate::socklen_t,
+    ) -> ssize_t;
+}

src/new/mod.rs

@@ -8,5 +8,8 @@ cfg_if! {
     if #[cfg(target_os = "linux")] {
         mod linux_uapi;
         pub use linux_uapi::*;
+    } else if #[cfg(target_os = "android")] {
+        mod bionic;
+        pub use bionic::*;
     }
 }

src/unix/linux_like/android/mod.rs

@@ -1,6 +1,7 @@
 //! Android-specific definitions for linux-like values
 
 use crate::prelude::*;
+use crate::{cmsghdr, msghdr};
 
 cfg_if! {
     if #[cfg(doc)] {
@@ -74,22 +75,6 @@ s! {
         __val: [c_int; 2],
     }
 
-    pub struct msghdr {
-        pub msg_name: *mut c_void,
-        pub msg_namelen: crate::socklen_t,
-        pub msg_iov: *mut crate::iovec,
-        pub msg_iovlen: size_t,
-        pub msg_control: *mut c_void,
-        pub msg_controllen: size_t,
-        pub msg_flags: c_int,
-    }
-
-    pub struct cmsghdr {
-        pub cmsg_len: size_t,
-        pub cmsg_level: c_int,
-        pub cmsg_type: c_int,
-    }
-
     pub struct termios {
         pub c_iflag: crate::tcflag_t,
         pub c_oflag: crate::tcflag_t,
@@ -203,12 +188,6 @@ s! {
         pub it_value: crate::timespec,
     }
 
-    pub struct ucred {
-        pub pid: crate::pid_t,
-        pub uid: crate::uid_t,
-        pub gid: crate::gid_t,
-    }
-
     pub struct genlmsghdr {
         pub cmd: u8,
         pub version: u8,
@@ -3501,14 +3480,6 @@ extern "C" {
     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 mprotect(addr: *mut c_void, len: size_t, prot: c_int) -> c_int;
-    pub fn recvfrom(
-        socket: c_int,
-        buf: *mut c_void,
-        len: size_t,
-        flags: c_int,
-        addr: *mut crate::sockaddr,
-        addrlen: *mut crate::socklen_t,
-    ) -> ssize_t;
     pub fn getnameinfo(
         sa: *const crate::sockaddr,
         salen: crate::socklen_t,
@@ -3821,19 +3792,6 @@ extern "C" {
     ) -> c_int;
     pub fn __errno() -> *mut c_int;
     pub fn inotify_rm_watch(fd: c_int, wd: u32) -> c_int;
-    pub fn sendmmsg(
-        sockfd: c_int,
-        msgvec: *const crate::mmsghdr,
-        vlen: c_uint,
-        flags: c_int,
-    ) -> c_int;
-    pub fn recvmmsg(
-        sockfd: c_int,
-        msgvec: *mut crate::mmsghdr,
-        vlen: c_uint,
-        flags: c_int,
-        timeout: *const crate::timespec,
-    ) -> c_int;
     pub fn inotify_init() -> c_int;
     pub fn inotify_init1(flags: c_int) -> c_int;
     pub fn inotify_add_watch(fd: c_int, path: *const c_char, mask: u32) -> c_int;

src/unix/linux_like/mod.rs

@@ -1792,24 +1792,24 @@ const_fn! {
 }
 
 f! {
-    pub fn CMSG_FIRSTHDR(mhdr: *const msghdr) -> *mut cmsghdr {
-        if (*mhdr).msg_controllen as usize >= size_of::<cmsghdr>() {
-            (*mhdr).msg_control.cast::<cmsghdr>()
+    pub fn CMSG_FIRSTHDR(mhdr: *const crate::msghdr) -> *mut crate::cmsghdr {
+        if (*mhdr).msg_controllen as usize >= size_of::<crate::cmsghdr>() {
+            (*mhdr).msg_control.cast::<crate::cmsghdr>()
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            core::ptr::null_mut::<crate::cmsghdr>()
         }
     }
 
-    pub fn CMSG_DATA(cmsg: *const cmsghdr) -> *mut c_uchar {
+    pub fn CMSG_DATA(cmsg: *const crate::cmsghdr) -> *mut c_uchar {
         cmsg.offset(1) as *mut c_uchar
     }
 
     pub {const} fn CMSG_SPACE(length: c_uint) -> c_uint {
-        (CMSG_ALIGN(length as usize) + CMSG_ALIGN(size_of::<cmsghdr>())) as c_uint
+        (CMSG_ALIGN(length as usize) + CMSG_ALIGN(size_of::<crate::cmsghdr>())) as c_uint
     }
 
     pub {const} fn CMSG_LEN(length: c_uint) -> c_uint {
-        CMSG_ALIGN(size_of::<cmsghdr>()) as c_uint + length
+        CMSG_ALIGN(size_of::<crate::cmsghdr>()) as c_uint + length
     }
 
     pub fn FD_CLR(fd: c_int, set: *mut fd_set) -> () {