int futimes(int fd, const struct timeval tv);
int lutimes(const char *filename, const struct timeval tv);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
futimes(), lutimes(): _BSD_SOURCE
futimes() changes the access and modification times of a file in the
same way as utimes(2), with the difference that the file whose time-
stamps 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 time-
stamps of the symbolic link are changed.
On success, zero is returned. On error, -1 is returned, and errno is
Errors are as for utimes(2), with the following additions for
EBADF fd is not a valid file descriptor.
ENOSYS The /proc file system could not be accessed.
futimes() is available since glibc 2.3. lutimes() is available since
glibc 2.6, and is implemented using the utimensat(2) system call, which
is supported since kernel 2.6.22.
These functions are not specified in any standard. Other than Linux,
they are only available on the BSDs.
utime(2), utimensat(2), symlink(7)
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