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OpenSolaris 2009.06 - man page for utime (opensolaris section 2)

utime(2)				   System Calls 				 utime(2)

       utime - set file access and modification times

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

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

       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  a  process	 that	has   the
       {PRIV_FILE_OWNER} privilege asserted in its effective set can 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.

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

       The utime() function will fail if:

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

       EACCES	       The  process  does not have appropriate privileges and is 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 the owner  of  the  file,
		       {PRIV_FILE_OWNER}  is  not  asserted  in  the effective set of the calling
		       process, and times is not NULL.

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

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

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Interface Stability	     |Standard			   |
       |MT-Level		     |Async-Signal-Safe 	   |

       stat(2), utimes(2), attributes(5), privileges(5), standards(5)

SunOS 5.11				   19 Apr 2004					 utime(2)

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