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System Callsutime(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

 

The utime() function sets the access and modification times of the file pointed to by path, and causes the time of the last file status change (st_ctime) to be updated.

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() in this manner.

The utimbuf structure contains the following members:

 
time_t   actime;    /* access time */
time_t   modtime;   /* modification time */

The times contained in the members of the utimbuf structure are measured in seconds since 00:00:00 UTC, January 1, 1970.

RETURN VALUES

 

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

ERRORS

 

The utime() function will fail if:

EACCES
Search permission is denied by a component of the path prefix; or the effective user ID of the process is not superuser and not the owner of the file, write permission is denied for the file, and times is NULL.
EFAULT
The path argument points to an illegal address.
EINTR
A signal was caught during the execution of the utime() function.
EIO
An I/O error occurred while reading from or writing to the file system.
ELOOP
Too many symbolic links were encountered in translating path.
ENAMETOOLONG
The length of the path argument exceeds PATH_MAX, or the length of a path component exceeds NAME_MAX while _POSIX_NO_TRUNC is in effect.
ENOENT
The named file does not exist or is a null pathname.
ENOLINK
The path argument points to a remote machine and the link to that machine is no longer active.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 of the calling process 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.

ATTRIBUTES

 

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityStandard
MT-LevelAsync-Signal-Safe

SEE ALSO

 

stat(2), attributes(5)


SunOS 5.9Go To TopLast Changed 28 Dec 1996

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.