projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3d9156a7 A |
1 | /* |
| 2 | * Copyright (c) 2004 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. Please obtain a copy of the License at | |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 11 | * file. | |
| 12 | * | |
| 13 | * The Original Code and all software distributed under the License are | |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 18 | * Please see the License for the specific language governing rights and | |
| 19 | * limitations under the License. | |
| 20 | * | |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | #include <unistd.h> | |
| 24 | #include <sys/shm.h> | |
| 3d9156a7 A |
25 | |
| 26 | /* | |
| 27 | * Stub function to account for the differences in the ipc_perm structure, | |
| 28 | * while maintaining binary backward compatibility. | |
| 224c7076 A |
29 | * |
| 30 | * This is only the legacy behavior. | |
| 3d9156a7 | 31 | */ |
| 224c7076 A |
32 | extern int __shmctl(int, int, void *); |
| 33 | ||
| 3d9156a7 A |
34 | int |
| 35 | shmctl(int shmid, int cmd, struct shmid_ds *ds) | |
| 36 | { | |
| 224c7076 | 37 | struct __shmid_ds_old *ds_old = (struct __shmid_ds_old *)ds; |
| 3d9156a7 A |
38 | struct __shmid_ds_new ds2; |
| 39 | struct __shmid_ds_new *ds_new = &ds2; | |
| 40 | int rv; | |
| 41 | ||
| 42 | #define _UP_CVT(x) ds_new-> x = ds_old-> x | |
| 43 | #define _DN_CVT(x) ds_old-> x = ds_new-> x | |
| 44 | ||
| 45 | if (cmd == IPC_SET) { | |
| 46 | /* convert before call */ | |
| 47 | _UP_CVT(shm_perm.uid); | |
| 48 | _UP_CVT(shm_perm.gid); | |
| 49 | _UP_CVT(shm_perm.cuid); | |
| 50 | _UP_CVT(shm_perm.cgid); | |
| 51 | _UP_CVT(shm_perm.mode); | |
| 52 | ds_new->shm_perm._seq = ds_old->shm_perm.seq; | |
| 53 | ds_new->shm_perm._key = ds_old->shm_perm.key; | |
| 54 | _UP_CVT(shm_segsz); | |
| 55 | _UP_CVT(shm_lpid); | |
| 56 | _UP_CVT(shm_cpid); | |
| 57 | _UP_CVT(shm_nattch); | |
| 58 | _UP_CVT(shm_atime); | |
| 59 | _UP_CVT(shm_dtime); | |
| 60 | _UP_CVT(shm_ctime); | |
| 61 | _UP_CVT(shm_internal); | |
| 62 | } | |
| 63 | ||
| 224c7076 | 64 | rv = __shmctl(shmid, cmd, (void *)ds_new); |
| 3d9156a7 A |
65 | |
| 66 | if (cmd == IPC_STAT) { | |
| 67 | /* convert after call */ | |
| 68 | _DN_CVT(shm_perm.uid); /* warning! precision loss! */ | |
| 69 | _DN_CVT(shm_perm.gid); /* warning! precision loss! */ | |
| 70 | _DN_CVT(shm_perm.cuid); /* warning! precision loss! */ | |
| 71 | _DN_CVT(shm_perm.cgid); /* warning! precision loss! */ | |
| 72 | _DN_CVT(shm_perm.mode); | |
| 224c7076 A |
73 | ds_old->shm_perm.seq = ds_new->shm_perm._seq; |
| 74 | ds_old->shm_perm.key = ds_new->shm_perm._key; | |
| 75 | _DN_CVT(shm_segsz); | |
| 76 | _DN_CVT(shm_lpid); | |
| 77 | _DN_CVT(shm_cpid); | |
| 78 | _DN_CVT(shm_nattch); | |
| 79 | _DN_CVT(shm_atime); | |
| 80 | _DN_CVT(shm_dtime); | |
| 81 | _DN_CVT(shm_ctime); | |
| 82 | _DN_CVT(shm_internal); | |
| 3d9156a7 A |
83 | } |
| 84 | ||
| 85 | return (rv); | |
| 3d9156a7 | 86 | } |