The fd_filestat_set_times() function is used to set the timestamp metadata on a file identified by a file descriptor. It allows modifying the last accessed time (st_atime) and last modified time (st_mtime) of the file. The function also provides a bit-vector (fst_flags) to control which times should be set.
In POSIX systems, files have associated timestamp metadata that stores information about the file's access and modification times. The fd_filestat_set_times() function enables applications to update these timestamps. It allows setting the last accessed and last modified times to specific values or using the current time.
Note
The fd_filestat_set_times() function allows setting the timestamp metadata of a file identified by the provided file descriptor. Applications can specify the last accessed and last modified times using the provided parameters. The fst_flags bit-vector is used to control which times should be set.
Please note that if both SET_ATIME and SET_ATIME_NOW flags are set, or if both SET_MTIME and SET_MTIME_NOW flags are set in fst_flags, the function will return Errno::Inval.