explain_dirfd_or_die(3) - Linux man page
Name
explain_dirfd_or_die - get directory stream file descriptor and report errors
Synopsis
#include <libexplain/dirfd.h>
int explain_dirfd_or_die(DIR *dir);
int explain_dirfd_on_error(DIR *dir);
Description
The explain_dirfd_or_die function is used to call the dirfd(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_dirfd(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_dirfd_on_error function is used to call the dirfd(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_dirfd(3) function, but still returns to the caller.
- dir
The dir, exactly as to be passed to the dirfd(3) system call.
Return Value
The explain_dirfd_or_die function only returns on success, see dirfd(3) for more information. On failure, prints an explanation and exits, it does not return.
The explain_dirfd_on_error function always returns the value return by the wrapped dirfd(3) system call.
Example
The explain_dirfd_or_die function is intended to be used in a fashion similar to the following example:
-
int result = explain_dirfd_or_die(dir);
See Also
dirfd(3)
- get directory stream file descriptor
- explain_dirfd(3)
- explain dirfd(3) errors
- exit(2)
terminate the calling process
Copyright
libexplain version 0.52
Copyright © 2009 Peter Miller