emulated/lutimes.c

   1 /*
   2  * Copyright (c) 2006 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/types.h>
  25 #include <sys/stat.h>
  26 #include <sys/attr.h>
  27 #include <sys/time.h>
  28 #include <unistd.h>
  29 #include <strings.h>
  30
  31 int
  32 lutimes(const char *path, const struct timeval *times)
  33 {
  34         struct stat s;
  35         struct attrlist a;
  36         struct {
  37             struct timespec mod;
  38             struct timespec access;
  39         } t;
  40
  41         if(lstat(path, &s) < 0)
  42                 return -1;
  43         if((s.st_mode & S_IFMT) != S_IFLNK)
  44                 return utimes(path, times);
  45         bzero(&a, sizeof(a));
  46         a.bitmapcount = ATTR_BIT_MAP_COUNT;
  47         a.commonattr = ATTR_CMN_MODTIME | ATTR_CMN_ACCTIME;
  48         if(times) {
  49                 TIMEVAL_TO_TIMESPEC(&times[0], &t.access);
  50                 TIMEVAL_TO_TIMESPEC(&times[1], &t.mod);
  51         } else {
  52                 struct timeval now;
  53
  54                 if(gettimeofday(&now, NULL) < 0)
  55                         return -1;
  56                 TIMEVAL_TO_TIMESPEC(&now, &t.access);
  57                 TIMEVAL_TO_TIMESPEC(&now, &t.mod);
  58         }
  59         return setattrlist(path, &a, &t, sizeof(t), FSOPT_NOFOLLOW);
  60 }