minix/fs/mfs/time.c

   1 #include "fs.h"
   2 #include "inode.h"
   3 #include <sys/time.h>
   4 #include <sys/stat.h>
   5
   6
   7 /*===========================================================================*
   8  *                              fs_utime                                     *
   9  *===========================================================================*/
  10 int fs_utime(ino_t ino_nr, struct timespec *atime, struct timespec *mtime)
  11 {
  12   register struct inode *rip;
  13
  14   /* Temporarily open the file. */
  15   if( (rip = get_inode(fs_dev, ino_nr)) == NULL)
  16         return(EINVAL);
  17
  18   rip->i_update = CTIME; /* discard any stale ATIME and MTIME flags */
  19
  20   switch (atime->tv_nsec) {
  21   case UTIME_NOW:
  22         rip->i_update |= ATIME;
  23         break;
  24   case UTIME_OMIT: /* do not touch */
  25         break;
  26   default:
  27         /* MFS does not support subsecond resolution, so we round down. */
  28         rip->i_atime = atime->tv_sec;
  29         break;
  30   }
  31
  32   switch (mtime->tv_nsec) {
  33   case UTIME_NOW:
  34         rip->i_update |= MTIME;
  35         break;
  36   case UTIME_OMIT: /* do not touch */
  37         break;
  38   default:
  39         /* MFS does not support subsecond resolution, so we round down. */
  40         rip->i_mtime = mtime->tv_sec;
  41         break;
  42   }
  43
  44   IN_MARKDIRTY(rip);
  45
  46   put_inode(rip);
  47   return(OK);
  48 }
  49