table of contents
futimes(3) | Library Functions Manual | futimes(3) |
NAME¶
futimes, lutimes - change file timestamps
LIBRARY¶
Standard C library (libc, -lc)
SYNOPSIS¶
#include <sys/time.h>
int futimes(int fd, const struct timeval tv[2]); int lutimes(const char *filename, const struct timeval tv[2]);
futimes(), lutimes():
Since glibc 2.19:
_DEFAULT_SOURCE
glibc 2.19 and earlier:
_BSD_SOURCE
DESCRIPTION¶
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():
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¶
NOTES¶
lutimes() is implemented using the utimensat(2) system call.
SEE ALSO¶
2023-03-30 | Linux man-pages 6.04 |