| /* Copyright (C) 1995-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sys/msg.h> |
| #include <ipc_priv.h> |
| #include <sysdep.h> |
| #include <errno.h> |
| |
| /* Attach the shared memory segment associated with SHMID to the data |
| segment of the calling process. SHMADDR and SHMFLG determine how |
| and where the segment is attached. */ |
| |
| void * |
| shmat (int shmid, const void *shmaddr, int shmflg) |
| { |
| #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS |
| return (void*) INLINE_SYSCALL_CALL (shmat, shmid, shmaddr, shmflg); |
| #else |
| INTERNAL_SYSCALL_DECL(err); |
| unsigned long resultvar; |
| void *raddr; |
| |
| resultvar = INTERNAL_SYSCALL_CALL (ipc, err, IPCOP_shmat, shmid, shmflg, |
| &raddr, shmaddr); |
| if (INTERNAL_SYSCALL_ERROR_P (resultvar, err)) |
| return (void *) INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (resultvar, |
| err)); |
| |
| return raddr; |
| #endif |
| } |
