1 /* Linux recvmsg syscall wrapper.
2 Copyright (C) 2016-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #include <sys/socket.h>
20 #include <sysdep-cancel.h>
21 #include <socketcall.h>
24 __libc_recvmsg (int fd
, struct msghdr
*msg
, int flags
)
27 #ifndef __ASSUME_TIME64_SYSCALLS
28 socklen_t orig_controllen
= msg
!= NULL
? msg
->msg_controllen
: 0;
31 #ifdef __ASSUME_RECVMSG_SYSCALL
32 r
= SYSCALL_CANCEL (recvmsg
, fd
, msg
, flags
);
34 r
= SOCKETCALL_CANCEL (recvmsg
, fd
, msg
, flags
);
37 #ifndef __ASSUME_TIME64_SYSCALLS
38 if (r
>= 0 && orig_controllen
!= 0)
39 __convert_scm_timestamps (msg
, orig_controllen
);
44 weak_alias (__libc_recvmsg
, recvmsg
)
45 weak_alias (__libc_recvmsg
, __recvmsg
)
47 weak_alias (__recvmsg
, __recvmsg64
)