projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9385eb3d A |
1 | /* |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. | |
| 7 | * | |
| 8 | * This file contains Original Code and/or Modifications of Original Code | |
| 9 | * as defined in and that are subject to the Apple Public Source License | |
| 10 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 11 | * compliance with the License. Please obtain a copy of the License at | |
| 12 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 13 | * file. | |
| 14 | * | |
| 15 | * The Original Code and all software distributed under the License are | |
| 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 20 | * Please see the License for the specific language governing rights and | |
| 21 | * limitations under the License. | |
| 22 | * | |
| 23 | * @APPLE_LICENSE_HEADER_END@ | |
| 24 | */ | |
| 25 | ||
| 26 | #ifdef __APPLE_PR3375657_HACK__ | |
| 27 | ||
| 28 | #include <stdio.h> | |
| 29 | #include <semaphore.h> | |
| 30 | #include <sys/syscall.h> | |
| 31 | #include <sys/types.h> | |
| 32 | #include <unistd.h> | |
| 33 | #include <alloca.h> | |
| 34 | #include <stdarg.h> | |
| 35 | #include <string.h> | |
| 36 | ||
| 37 | __private_extern__ int _sem_match(const char *name); | |
| 38 | ||
| 39 | sem_t * | |
| 40 | sem_open (const char *name, int flags, ...) | |
| 41 | { | |
| 42 | char *buffer; | |
| 43 | va_list ap; | |
| 44 | int mode; | |
| 45 | unsigned int value; | |
| 46 | ||
| 47 | /* | |
| 48 | * To work-around applications that don't play | |
| 49 | * well in multiple GUI sessions, we append | |
| 50 | * shared memory names with the effective user ID. | |
| 51 | * It would be better to append the region name | |
| 52 | * with a session ID, but nothing like that | |
| 53 | * exists at this level of the system yet. | |
| 54 | */ | |
| 55 | ||
| 56 | if (_sem_match(name) && (buffer = alloca(strlen(name) + 32)) != NULL) { | |
| 57 | sprintf(buffer, "%s\t%d", name, geteuid()); | |
| 58 | name = buffer; | |
| 59 | } | |
| 60 | ||
| 61 | // sem_open (const char *name, int flags, mode_t mode, unsigned int value) | |
| 62 | va_start(ap, flags); | |
| 63 | mode = va_arg(ap, int); /* promoted from mode_t to int */ | |
| 64 | value = va_arg(ap, unsigned int); | |
| 65 | va_end(ap); | |
| 66 | ||
| 67 | return syscall (SYS_sem_open, name, flags, mode, value); | |
| 68 | } | |
| 69 | ||
| 70 | #endif /* __APPLE_PR3375657_HACK__ */ |