NAME
futimes, lutimes - change file timestamps
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <sys/time.h>int futimes(int \nfd\n, const struct timeval \ntv\n[2]);\n
\nint lutimes(const char *\nfilename\n, const struct timeval \ntv\n[2]);futimes(), lutimes():
\n
Since glibc 2.19:
\n
_DEFAULT_SOURCE
\n
glibc 2.19 and earlier:
\n
_BSD_SOURCEDESCRIPTION
futimes() changes the access and modification times of a file in the same way as utimes(2), with the difference that the file whose timestamps are to be changed is specified via a file descriptor, fd, rather than via a pathname.
lutimes() changes the access and modification times of a file in the same way as utimes(2), with the difference that if filename refers to a symbolic link, then the link is not dereferenced: instead, the timestamps of the symbolic link are changed.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set to indicate the error.
ERRORS
Errors are as for utimes(2), with the following additions for futimes():
- EBADF
fd is not a valid file descriptor.
- ENOSYS
The /proc filesystem could not be accessed.
The following additional error may occur for lutimes():
- ENOSYS
The kernel does not support this call; Linux 2.6.22 or later is required.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| futimes (), lutimes () | Thread safety | MT-Safe |
STANDARDS
Linux, BSD.
HISTORY
- futimes()
glibc 2.3.
- lutimes()
glibc 2.6.
NOTES
lutimes() is implemented using the utimensat(2) system call.
SEE ALSO
utime(2), utimensat(2), symlink(7)