utime(2)                         UNIX System V                         utime(2)


NAME
      utime - set file access and modification times

SYNOPSIS
      #include <sys/types.h>
      #include <utime.h>

      int utime(const char *path, const struct utimbuf *times);

DESCRIPTION
      path points to a path name naming a file.  utime sets the access and
      modification times of the named file.

      If times is NULL, the access and modification times of the file are set
      to the current time.  A process must be the owner of the file or have
      write permission to use utime in this manner.

      If times is not NULL, times is interpreted as a pointer to a utimbuf
      structure (defined in utime.h) and the access and modification times are
      set to the values contained in the designated structure.  Only the owner
      of the file or the super-user may use utime this way.

      The times in the following structure are measured in seconds since
      00:00:00 UTC, Jan. 1, 1970.

            struct    utimbuf        {
                 timet      actime; /* access time */
                 timet      modtime;/* modification time */
            };

      utime also causes the time of the last file status change (stctime) to
      be updated.

      utime will fail if one or more of the following are true:

      EACCES              Search permission is denied by a component of the
                          path prefix.

      EACCES              The effective user ID is not super-user and not the
                          owner of the file and times is NULL and write access
                          is denied.

      EFAULT              times is not NULL and points outside the process's
                          allocated address space.

      EFAULT              path points outside the process's allocated address
                          space.

      EINTR               A signal was caught during the utime system call.





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utime(2)                         UNIX System V                         utime(2)


      ELOOP               Too many symbolic links were encountered in
                          translating path.

      EMULTIHOP           Components of path require hopping to multiple remote
                          machines and the file system does not allow it.

      ENAMETOOLONG        The length of the path argument exceeds {PATHMAX},
                          or the length of a path component exceeds {NAMEMAX}
                          while POSIXNOTRUNC is in effect.

      ENOENT              The named file does not exist or is a null pathname.

      ENOLINK             path points to a remote machine and the link to that
                          machine is no longer active.

      ENOTDIR             A component of the path prefix is not a directory.

      EPERM               The effective user ID is not super-user and not the
                          owner of the file and times is not NULL.

      EROFS               The file system containing the file is mounted read-
                          only.

SEE ALSO
      stat(2).

DIAGNOSTICS
      Upon successful completion, a value of 0 is returned.  Otherwise, a value
      of -1 is returned and errno is set to indicate the error.

























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