utime(3) [netbsd man page]

UTIME(3)						   BSD Library Functions Manual 						  UTIME(3)

NAME

     utime -- set file times

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <utime.h>

     int
     utime(const char *file, const struct utimbuf *timep);

DESCRIPTION

     This interface is obsoleted by utimes(2).

     The utime() function sets the access and modification times of the named file.

     If timep is NULL, the access and modification times are set to the current time.  The calling process must be the owner of the file or have
     permission to write the file.

     If timep is non-NULL, time is assumed to be a pointer to a utimbuf structure, as defined in <utime.h>:

	   struct utimbuf {
		   time_t actime;	   /* Access time */
		   time_t modtime;	   /* Modification time */
	   };

     The access time is set to the value of the actime member, and the modification time is set to the value of the modtime member.  The times are
     measured in seconds since 0 hours, 0 minutes, 0 seconds, January 1, 1970 Coordinated Universal Time (UTC).  The calling process must be the
     owner of the file or be the super-user.

     In either case, the inode-change-time of the file is set to the current time.

RETURN VALUES

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

ERRORS

     utime() will fail if:

     [EACCES]		Search permission is denied for a component of the path prefix; or the times argument is NULL and the effective user ID of
			the process does not match the owner of the file, and is not the super-user, and write access is denied.

     [EFAULT]		file or times points outside the process's allocated address space.

     [EINVAL]		The pathname contains a character with the high-order bit set.

     [EIO]		An I/O error occurred while reading or writing the affected inode.

     [ELOOP]		Too many symbolic links were encountered in translating the pathname.

     [ENAMETOOLONG]	A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters.

     [ENOENT]		The named file does not exist.

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

     [EPERM]		The times argument is not NULL and the calling process's effective user ID does not match the owner of the file and is not
			the super-user.

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

SEE ALSO

     stat(2), utimes(2)

STANDARDS

     The utime() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').  It was however marked as legacy in the IEEE Std 1003.1-2008
     (``POSIX.1'') revision of the standard.

HISTORY

     A utime() function appeared in Version 7 AT&T UNIX.

BSD
								  April 29, 2010							       BSD

UTIMES(2)						      BSD System Calls Manual							 UTIMES(2)

NAME

     futimes, utimes -- set file access and modification times

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <sys/time.h>

     int
     futimes(int fildes, const struct timeval times[2]);

     int
     utimes(const char *path, const struct timeval times[2]);

DESCRIPTION

     The access and modification times of the file named by path or referenced by fildes are changed as specified by the argument times.

     If times is NULL, the access and modification times are set to the current time.  The caller must be the owner of the file, have permission
     to write the file, or be the super-user.

     If times is non-NULL, it is assumed to point to an array of two timeval structures.  The access time is set to the value of the first ele-
     ment, and the modification time is set to the value of the second element.  The caller must be the owner of the file or be the super-user.

     In either case, the inode-change-time of the file is set to the current time.

RETURN VALUES

     Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the
     error.

ERRORS

     The utimes() system call will fail if:

     [EACCES]		Search permission is denied for a component of the path prefix; or the times argument is NULL and the effective user ID of
			the process does not match the owner of the file, and is not the super-user, and write access is denied.

     [EFAULT]		path or times points outside the process's allocated address space.

     [EIO]		An I/O error occurs while reading or writing the affected inode.

     [ELOOP]		Too many symbolic links are encountered in translating the pathname.  This is taken to be indicative of a looping symbolic
			link.

     [ENAMETOOLONG]	A component of a pathname exceeds NAME_MAX characters, or an entire path name exceeded PATH_MAX characters.

     [ENOENT]		The named file does not exist.

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

     [EPERM]		The times argument is not NULL and the calling process's effective user ID does not match the owner of the file and is not
			the super-user.

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

     The futimes() system call will fail if:

     [EBADF]		fildes does not refer to a valid descriptor.

     All of the functions will fail if:

     [EACCES]		The times argument is NULL and the effective user ID of the process does not match the owner of the file, and is not the
			super-user, and write access is denied.

     [EFAULT]		times points outside the process's allocated address space.

     [EIO]		An I/O error occurred while reading or writing the affected inode.

     [EPERM]		The times argument is not NULL and the calling process's effective user ID does not match the owner of the file and is not
			the super-user.

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

SEE ALSO

     stat(2), utime(3)

HISTORY

     The utimes() function call appeared in 4.2BSD.  The futimes() function call first appeared in FreeBSD 3.0.

BSD
								   June 4, 1993 							       BSD