UTIME

Section: C Library Functions (3)
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BSD mandoc
BSD 4  

NAME

utime - set file times  

SYNOPSIS

Fd #include <sys/types.h> Fd #include <utime.h> Ft int Fn utime const char *file const struct utimbuf *timep  

DESCRIPTION

Bf -symbolic This interface is obsoleted by utimes(2) . Ef

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

If Fa 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 Fa timep is non- NULL Fa time is assumed to be a pointer to a utimbuf structure, as defined in Aq Pa 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. 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

Fn Utime will fail if:

Bq Er EACCES
Search permission is denied for a component of the path prefix; or the Fa 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.
Bq Er EFAULT
File or Fa times points outside the process's allocated address space.
Bq Er EINVAL
The pathname contains a character with the high-order bit set.
Bq Er EIO
An I/O error occurred while reading or writing the affected inode.
Bq Er ELOOP
Too many symbolic links were encountered in translating the pathname.
Bq Er ENAMETOOLONG
A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters.
Bq Er ENOENT
The named file does not exist.
Bq Er ENOTDIR
A component of the path prefix is not a directory.
Bq Er EPERM
The Fa 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.
Bq Er EROFS
The file system containing the file is mounted read-only.

 

SEE ALSO

stat(2), utimes(2)  

HISTORY

A Fn utime function appeared in AT&T System v7 .  

STANDARDS

The Fn utime function conforms to St -p1003.1-88 .

 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
SEE ALSO
HISTORY
STANDARDS
This document was created by man2html, using the manual pages.
Time: 15:52:51 GMT, January 15, 2023