compiler/clib/utimes.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <dos/dos.h>
   7 #include <proto/dos.h>
   8
   9 #include <errno.h>
  10
  11 #include "__upath.h"
  12
  13 /*****************************************************************************
  14
  15     NAME */
  16 #include <sys/time.h>
  17
  18         int utimes(
  19 /*  SYNOPSIS */
  20
  21         const char *file,
  22         const struct timeval tvp[2])
  23
  24 /*  FUNCTION
  25         Change last access and last modification time of the given file to
  26         times specified in tvp array. If tvp is NULL, the current time will be
  27         used instead.
  28
  29     INPUTS
  30         filename - Name of the file
  31         buf - Pointer to an array of two timeval structures. First structure
  32                 specifies the last access time, second specifies the last
  33                 modification time
  34
  35     RESULT
  36         0 on success and -1 on error. If an error occurred, the global
  37         variable errno is set.
  38
  39     NOTES
  40         The timeval structure has microsecond resolution, but in reality
  41         this function has time resolution of 1 tick.
  42
  43     EXAMPLE
  44
  45     BUGS
  46         Since AROS has no notion of last access time, it's silently ignored
  47         and only modification time of the file is set.
  48
  49     SEE ALSO
  50         utime()
  51
  52     INTERNALS
  53
  54 ******************************************************************************/
  55 {
  56     struct DateStamp ds;
  57
  58     if (!file) /*safety check */
  59     {
  60         errno = EFAULT;
  61         return -1;
  62     }
  63
  64     file = __path_u2a(file);
  65     if (!file)
  66         return -1;
  67
  68     if(tvp != NULL)
  69     {
  70         ULONG t = (ULONG)tvp[1].tv_sec - 2922 * 1440 * 60;
  71
  72         ds.ds_Days   = t / (60*60*24);
  73         ds.ds_Minute = (t / 60) % (60*24);
  74         ds.ds_Tick   = (t % 60) * TICKS_PER_SECOND;
  75     }
  76     else
  77         DateStamp(&ds);
  78
  79     if (SetFileDate(file, &ds))
  80         return 0;
  81     else
  82         errno = __arosc_ioerr2errno(IoErr());
  83
  84     return -1;
  85 }