| | 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> |
| | 25 | |
| | 26 | /* |
| | 27 | * Stub function to account for the differences in the ipc_perm structure, |
| | 28 | * while maintaining binary backward compatibility. |
| | 29 | * |
| | 30 | * This is only the legacy behavior. |
| | 31 | */ |
| | 32 | extern int __shmctl(int, int, void *); |
| | 33 | |
| | 34 | int |
| | 35 | shmctl(int shmid, int cmd, struct shmid_ds *ds) |
| | 36 | { |
| | 37 | struct __shmid_ds_old *ds_old = (struct __shmid_ds_old *)ds; |
| | 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 | |
| | 64 | rv = __shmctl(shmid, cmd, (void *)ds_new); |
| | 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); |
| | 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); |
| | 83 | } |
| | 84 | |
| | 85 | return (rv); |
| | 86 | } |
projects / apple / libc.git / blame_incremental