| explain_fchmod_or_die(3) | Library Functions Manual | explain_fchmod_or_die(3) |
explain_fchmod_or_die - change permissions of an open file and report errors
#include <libexplain/fchmod.h>
void explain_fchmod_or_die(int fildes, mode_t mode);
int explain_fchmod_on_error(int fildes, mode_t mode);
The explain_fchmod_or_die function is used to call the fchmod(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_fchmod(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_fchmod_on_error function is used to call the fchmod(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_fchmod(3) function, but still returns to the caller.
The explain_fchmod_or_die function only returns on success, see fchmod(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_fchmod_on_error function always returns the value return by the wrapped fchmod(2) system call.
The explain_fchmod_or_die function is intended to be used in a fashion similar to the following example:
explain_fchmod_or_die(fildes, mode);
libexplain version 1.4
Copyright (C) 2013 Peter Miller