Auto merge of #1231 - dholroyd:mmsg-support, r=gnzlbg

Broader sendmmsg() / recvmmsg() support

As a prerequisite for getting `sendmmsg()` / `recvmmsg()` into nix ( nix-rust/nix#1017 ), support for non-linux platforms needs to be added in libc.

The initial commits in this PR will just be to test out target support via CI.

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -190,6 +190,11 @@ s! {
         pub ss_size: ::size_t,
         pub ss_flags: ::c_int,
     }
+
+    pub struct mmsghdr {
+        pub msg_hdr: ::msghdr,
+        pub msg_len: ::ssize_t,
+    }
 }
 
 pub const SIGEV_THREAD_ID: ::c_int = 4;
@@ -1199,6 +1204,11 @@ extern {
 
     pub fn dup3(src: ::c_int, dst: ::c_int, flags: ::c_int) -> ::c_int;
     pub fn __xuname(nmln: ::c_int, buf: *mut ::c_void) -> ::c_int;
+
+    pub fn sendmmsg(sockfd: ::c_int, msgvec: *mut ::mmsghdr, vlen: ::size_t,
+                    flags: ::c_int) -> ::ssize_t;
+    pub fn recvmmsg(sockfd: ::c_int, msgvec: *mut ::mmsghdr, vlen: ::size_t,
+                    flags: ::c_int, timeout: *const ::timespec) -> ::ssize_t;
 }
 
 #[link(name = "util")]

src/unix/bsd/netbsdlike/netbsd/mod.rs

@@ -332,6 +332,11 @@ s! {
         pub ar_pln: u8,
         pub ar_op: u16,
     }
+
+    pub struct mmsghdr {
+        pub msg_hdr: ::msghdr,
+        pub msg_len: ::c_uint,
+    }
 }
 
 pub const AT_FDCWD: ::c_int = -100;
@@ -1199,6 +1204,11 @@ extern {
     pub fn settimeofday(tv: *const ::timeval, tz: *const ::c_void) -> ::c_int;
 
     pub fn dup3(src: ::c_int, dst: ::c_int, flags: ::c_int) -> ::c_int;
+
+    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;
 }
 
 #[link(name = "util")]

src/unix/notbsd/android/mod.rs

@@ -1722,6 +1722,10 @@ extern {
                           f: extern fn(*mut ::c_void) -> *mut ::c_void,
                           value: *mut ::c_void) -> ::c_int;
     pub fn __errno() -> *mut ::c_int;
+    pub fn sendmmsg(sockfd: ::c_int, msgvec: *const ::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: *const ::timespec) -> ::c_int;
 }
 
 cfg_if! {

src/unix/notbsd/emscripten.rs

@@ -225,11 +225,6 @@ s! {
         pub msgseg: ::c_ushort,
     }
 
-    pub struct mmsghdr {
-        pub msg_hdr: ::msghdr,
-        pub msg_len: ::c_uint,
-    }
-
     pub struct sembuf {
         pub sem_num: ::c_ushort,
         pub sem_op: ::c_short,
@@ -1666,9 +1661,9 @@ extern {
 
     pub fn getdomainname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
     pub fn setdomainname(name: *const ::c_char, len: ::size_t) -> ::c_int;
-    pub fn sendmmsg(sockfd: ::c_int, msgvec: *mut mmsghdr, vlen: ::c_uint,
+    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,
+    pub fn recvmmsg(sockfd: ::c_int, msgvec: *mut ::mmsghdr, vlen: ::c_uint,
                     flags: ::c_int, timeout: *mut ::timespec) -> ::c_int;
     pub fn sync();
     pub fn ioctl(fd: ::c_int, request: ::c_int, ...) -> ::c_int;

src/unix/notbsd/linux/mod.rs

@@ -346,11 +346,6 @@ s! {
         pub msgseg: ::c_ushort,
     }
 
-    pub struct mmsghdr {
-        pub msg_hdr: ::msghdr,
-        pub msg_len: ::c_uint,
-    }
-
     pub struct sembuf {
         pub sem_num: ::c_ushort,
         pub sem_op: ::c_short,
@@ -2054,9 +2049,9 @@ extern {
     pub fn getdomainname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
     pub fn setdomainname(name: *const ::c_char, len: ::size_t) -> ::c_int;
     pub fn vhangup() -> ::c_int;
-    pub fn sendmmsg(sockfd: ::c_int, msgvec: *mut mmsghdr, vlen: ::c_uint,
+    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,
+    pub fn recvmmsg(sockfd: ::c_int, msgvec: *mut ::mmsghdr, vlen: ::c_uint,
                     flags: ::c_int, timeout: *mut ::timespec) -> ::c_int;
     pub fn sync();
     pub fn syscall(num: ::c_long, ...) -> ::c_long;

src/unix/notbsd/mod.rs

@@ -228,6 +228,11 @@ s! {
         pub ar_pln: u8,
         pub ar_op: u16,
     }
+
+    pub struct mmsghdr {
+        pub msg_hdr: ::msghdr,
+        pub msg_len: ::c_uint,
+    }
 }
 
 // intentionally not public, only used for fd_set