(BSD System Compatibility)

utimes(3bsd)

utimes -- (BSD) set file times

Synopsis

   /usr/ucb/cc [flag . . . ] file . . .
   
   #include <sys/types.h>
   

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

Description

utimes sets the access and modification times of the file named by file.

If tvp is NULL, the access and modification times are set to the current time. A process must be the owner of the file or have write permission for the file to use utimes 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 privileged user may use utimes 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 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error.

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

ENOTDIR: A component of the path prefix of file is not a directory.
ENAMETOOLONG: The length of a component of file exceeds 255 characters, or the length of file exceeds 1023 characters.
ENOENT: The file referred to by file does not exist.
EACCES: Search permission is denied for a component of the path prefix of file.
ELOOP: Too many symbolic links were encountered in translating file.
EPERM: The effective user ID of the process is not privileged user and not the owner of the file, and tvp is not NULL.
EACCES: The effective user ID of the process is not privileged user and not the owner of the file, write permission is denied for the file, and tvp is NULL.
EIO: An I/O error occurred while reading from or writing to the file system.
EROFS: The file system containing the file is mounted read-only.
EFAULT: file or tvp points outside the process's allocated address space.

References

stat(2), utime(2)

Notices

utimes is a library routine that calls the utime(2) system call.