compiler/posixc/utimes.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     POSIX.1-2008 utimes() function
   6 */
   7
   8 #include <dos/dos.h>
   9 #include <proto/dos.h>
  10
  11 #include <errno.h>
  12
  13 #include "__upath.h"
  14
  15 /*****************************************************************************
  16
  17     NAME */
  18 #include <sys/time.h>
  19
  20         int utimes(
  21 /*  SYNOPSIS */
  22
  23         const char *file,
  24         const struct timeval tvp[2])
  25
  26 /*  FUNCTION
  27         Change last access and last modification time of the given file to
  28         times specified in tvp array. If tvp is NULL, the current time will be
  29         used instead.
  30
  31     INPUTS
  32         filename - Name of the file
  33         buf - Pointer to an array of two timeval structures. First structure
  34                 specifies the last access time, second specifies the last
  35                 modification time
  36
  37     RESULT
  38         0 on success and -1 on error. If an error occurred, the global
  39         variable errno is set.
  40
  41     NOTES
  42         The timeval structure has microsecond resolution, but in reality
  43         this function has time resolution of 1 tick.
  44
  45     EXAMPLE
  46
  47     BUGS
  48         Since AROS has no notion of last access time, it's silently ignored
  49         and only modification time of the file is set.
  50
  51     SEE ALSO
  52         utime()
  53
  54     INTERNALS
  55
  56 ******************************************************************************/
  57 {
  58     struct DateStamp ds;
  59
  60     if (!file) /*safety check */
  61     {
  62         errno = EFAULT;
  63         return -1;
  64     }
  65
  66     file = __path_u2a(file);
  67     if (!file)
  68         return -1;
  69
  70     if(tvp != NULL)
  71     {
  72         ULONG t = (ULONG)tvp[1].tv_sec - 2922 * 1440 * 60;
  73
  74         ds.ds_Days   = t / (60*60*24);
  75         ds.ds_Minute = (t / 60) % (60*24);
  76         ds.ds_Tick   = (t % 60) * TICKS_PER_SECOND;
  77     }
  78     else
  79         DateStamp(&ds);
  80
  81     if (SetFileDate(file, &ds))
  82         return 0;
  83     else
  84         errno = __stdc_ioerr2errno(IoErr());
  85
  86     return -1;
  87 }