utimes(2) [ultrix man page]

utimes(2)							System Calls Manual							 utimes(2)

Name
       utimes - set file times

Syntax
       #include <sys/time.h>

       int utimes(file, tvp)
       char *file;
       struct timeval *tvp;

Description
       The call sets the access and modification times of the  file named by file.

       If  tvp	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, the
       superuser, or have write permission to use in this manner.

       If tvp is not NULL, it is assumed to point to an array of two timeval structures.  The access time is set to the value of the first member,
       and the modification time is set to the value  of  the second member.  Only the owner of the file or the super-user may use in this manner.

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

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

Diagnostics
       The system call fails if one or more of the following are true:

       [EACCES] 	   Search permission is denied for a component of the path prefix.

       [EACCES] 	   The tvp argument is NULL and the caller is not the owner of the file; write access is denied.

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

       [EINVAL] 	   An illegal timeval (that is, negative seconds or microseconds greater than 999999) was supplied.

       [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 exceeds 255 characters, or an entire pathname exceeds 1023 characters.

       [ENOENT] 	   The named file does not exist.

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

       [EPERM]		   The	tvp  argument is not NULL, the caller has write access, the caller is not the owner of the file, and the caller is
			   not the superuser.

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

       [ETIMEDOUT]	   A connect request or remote file operation failed, because the connected party did not respond after a period  of  time
			   determined by the communications protocol.

See Also
       stat(2)

																	 utimes(2)

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