1 /* Copyright (C) 1995-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
22 /* Attach the shared memory segment associated with SHMID to the data
23 segment of the calling process. SHMADDR and SHMFLG determine how
24 and where the segment is attached. */
27 shmat (int shmid
, const void *shmaddr
, int shmflg
)
29 #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
30 return (void*) INLINE_SYSCALL_CALL (shmat
, shmid
, shmaddr
, shmflg
);
32 unsigned long resultvar
;
35 resultvar
= INTERNAL_SYSCALL_CALL (ipc
, IPCOP_shmat
, shmid
, shmflg
,
37 if (INTERNAL_SYSCALL_ERROR_P (resultvar
))
38 return (void *) INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (resultvar
));