| | 1 | /* |
| | 2 | * Copyright (c) 2005 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 | |
| | 24 | #include <sys/cdefs.h> |
| | 25 | |
| | 26 | #if __DARWIN_UNIX03 |
| | 27 | |
| | 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 */ |
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