src/system/libroot/posix/utime.c

   1 /*
   2  * Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include <utime.h>
   8
   9 #include <errno.h>
  10 #include <time.h>
  11
  12 #include <NodeMonitor.h>
  13
  14 #include <errno_private.h>
  15 #include <syscalls.h>
  16
  17
  18 #define RETURN_AND_SET_ERRNO(err) \
  19         if (err < 0) { \
  20                 __set_errno(err); \
  21                 return -1; \
  22         } \
  23         return err;
  24
  25
  26 int
  27 utime(const char *path, const struct utimbuf *times)
  28 {
  29         struct stat stat;
  30         status_t status;
  31
  32         if (times != NULL) {
  33                 stat.st_atim.tv_sec = times->actime;
  34                 stat.st_mtim.tv_sec = times->modtime;
  35                 stat.st_atim.tv_nsec = stat.st_mtim.tv_nsec = 0;
  36         } else {
  37                 bigtime_t now = real_time_clock_usecs();
  38                 stat.st_atim.tv_sec = stat.st_mtim.tv_sec = now / 1000000;
  39                 stat.st_atim.tv_nsec = stat.st_mtim.tv_nsec = (now % 1000000) * 1000;
  40         }
  41
  42         status = _kern_write_stat(-1, path, true, &stat, sizeof(struct stat),
  43                 B_STAT_MODIFICATION_TIME | B_STAT_ACCESS_TIME);
  44
  45         RETURN_AND_SET_ERRNO(status);
  46 }
  47