FUTIMES(3) Linux Programmer's Manual FUTIMES(3) NAME futimes, lutimes - change file timestamps SYNOPSIS #include <sys/time.h> 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 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 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. RETURN VALUE On success, zero is returned. On error, -1 is returned, and errno is set appropriately. 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. VERSIONS 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. ATTRIBUTES Multithreading (see pthreads(7)) The futimes() and lutimes() functions are thread-safe. CONFORMING TO These functions are not specified in any standard. Other than Linux, they are available only on the BSDs. SEE ALSO utime(2), utimensat(2), symlink(7) COLOPHON This page is part of release 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/. Linux 2013-10-29 FUTIMES(3)
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