projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d21ac55 | 1 | /* |
| 6d2010ae | 2 | * Copyright (c) 2005 Apple Computer, Inc. All rights reserved. |
| 2d21ac55 A |
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 | ||
| 6d2010ae | 24 | #include <sys/cdefs.h> |
| 2d21ac55 | 25 | |
| 6d2010ae | 26 | #if __DARWIN_UNIX03 |
| 2d21ac55 | 27 | |
| 6d2010ae A |
28 | #include <sys/types.h> |
| 29 | #include <sys/stat.h> | |
| 30 | #include "_errno.h" | |
| 31 | ||
| 32 | extern int __fchmod(int fd, mode_t mode); | |
| 33 | ||
| 34 | /* | |
| 35 | * fchmod stub, ignore S_ISUID and/or S_ISGID on EPERM, | |
| 36 | * mandated for conformance. | |
| 37 | * | |
| 38 | * This is for UNIX03 only. | |
| 39 | */ | |
| 40 | int | |
| 41 | fchmod(int fd, mode_t mode) | |
| 42 | { | |
| 43 | int res = __fchmod(fd, mode); | |
| 44 | ||
| 45 | if (res >= 0 || errno != EPERM || (mode & (S_ISUID | S_ISGID)) == 0) | |
| 46 | return res; | |
| 47 | if (mode & S_ISGID) { | |
| 48 | res = __fchmod(fd, mode ^ S_ISGID); | |
| 49 | if (res >= 0 || errno != EPERM) | |
| 50 | return res; | |
| 51 | } | |
| 52 | if (mode & S_ISUID) { | |
| 53 | res = __fchmod(fd, mode ^ S_ISUID); | |
| 54 | if (res >= 0 || errno != EPERM) | |
| 55 | return res; | |
| 56 | } | |
| 57 | if ((mode & (S_ISUID | S_ISGID)) == (S_ISUID | S_ISGID)) | |
| 58 | res = __fchmod(fd, mode ^ (S_ISUID | S_ISGID)); | |
| 59 | return res; | |
| 60 | } | |
| 61 | ||
| 62 | #endif /* __DARWIN_UNIX03 */ |