servers/ext2/time.c

   1 /* Created (MFS based):
   2  *   February 2010 (Evgeniy Ivanov)
   3  */
   4
   5 #include "fs.h"
   6 #include <minix/callnr.h>
   7 #include <minix/com.h>
   8 #include "inode.h"
   9 #include <minix/vfsif.h>
  10
  11
  12 /*===========================================================================*
  13  *                              fs_utime                                     *
  14  *===========================================================================*/
  15 int fs_utime()
  16 {
  17   register struct inode *rip;
  18   register int r;
  19
  20   /* Temporarily open the file. */
  21   if( (rip = get_inode(fs_dev, (ino_t) fs_m_in.REQ_INODE_NR)) == NULL)
  22         return(EINVAL);
  23
  24   /* Only the owner of a file or the super_user can change its time. */
  25   r = OK;
  26   if(read_only(rip) != OK) r = EROFS;   /* not even su can touch if R/O */
  27   if(r == OK) {
  28           rip->i_atime = fs_m_in.REQ_ACTIME;
  29           rip->i_mtime = fs_m_in.REQ_MODTIME;
  30           rip->i_update = CTIME; /* discard any stale ATIME and MTIME flags */
  31           rip->i_dirt = IN_DIRTY;
  32   }
  33
  34   put_inode(rip);
  35   return(r);
  36 }