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b168057a | 1 | /* Copyright (C) 1995-2015 Free Software Foundation, Inc. |
3e5f5557 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. | |
28f540f4 | 4 | |
3e5f5557 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 9 | |
3e5f5557 UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
28f540f4 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 18 | |
e9dcb080 | 19 | #include <errno.h> |
bbed653c | 20 | #include <sys/shm.h> |
973209d8 | 21 | #include <ipc_priv.h> |
28f540f4 | 22 | |
e9dcb080 | 23 | #include <sysdep.h> |
d060e318 | 24 | #include <unistd.h> |
e9dcb080 UD |
25 | #include <sys/syscall.h> |
26 | ||
d2f5be2a UD |
27 | /* Attach the shared memory segment associated with SHMID to the data |
28 | segment of the calling process. SHMADDR and SHMFLG determine how | |
29 | and where the segment is attached. */ | |
28f540f4 | 30 | |
3e5f5557 | 31 | void * |
bd2260a2 | 32 | shmat (int shmid, const void *shmaddr, int shmflg) |
d2f5be2a | 33 | { |
374976dd DM |
34 | INTERNAL_SYSCALL_DECL(err); |
35 | unsigned long resultvar; | |
70d9946a | 36 | void *raddr; |
d25c879d | 37 | |
374976dd DM |
38 | resultvar = INTERNAL_SYSCALL (ipc, err, 5, IPCOP_shmat, |
39 | shmid, shmflg, | |
70d9946a JM |
40 | (long int) &raddr, |
41 | (void *) shmaddr); | |
e5dee2c8 | 42 | if (INTERNAL_SYSCALL_ERROR_P (resultvar, err)) |
2caca60d L |
43 | return (void *) INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (resultvar, |
44 | err)); | |
e5dee2c8 L |
45 | |
46 | return raddr; | |
d2f5be2a | 47 | } |