servers/mfs/time.c

   1 #include "fs.h"
   2 #include "inode.h"
   3 #include <minix/vfsif.h>
   4
   5
   6 /*===========================================================================*
   7  *                              fs_utime                                     *
   8  *===========================================================================*/
   9 int fs_utime()
  10 {
  11   register struct inode *rip;
  12   register int r;
  13
  14   /* Temporarily open the file. */
  15   if( (rip = get_inode(fs_dev, (ino_t) fs_m_in.REQ_INODE_NR)) == NULL)
  16         return(EINVAL);
  17
  18   /* Only the owner of a file or the super_user can change its time. */
  19   r = OK;
  20   if(read_only(rip) != OK) r = EROFS;   /* not even su can touch if R/O */
  21   if(r == OK) {
  22           rip->i_atime = fs_m_in.REQ_ACTIME;
  23           rip->i_mtime = fs_m_in.REQ_MODTIME;
  24           rip->i_update = CTIME; /* discard any stale ATIME and MTIME flags */
  25           IN_MARKDIRTY(rip);
  26   }
  27
  28   put_inode(rip);
  29   return(r);
  30 }
  31