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 32extern 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 */ 40int 41fchmod(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 */ 63