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| explain_fchmod_or_die(3) | FreeBSD Library Functions Manual | explain_fchmod_or_die(3) |
NAME
explain_fchmod_or_die - change permissions of an open file and report errorsSYNOPSIS
#include <libexplain/fchmod.h>void explain_fchmod_or_die(int fildes, mode_t mode);
int explain_fchmod_on_error(int fildes, mode_t mode);
DESCRIPTION
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.
- fildes
- The fildes, exactly as to be passed to the fchmod(2) system call.
- mode
- The mode, exactly as to be passed to the fchmod(2) system call.
RETURN VALUE
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.
EXAMPLE
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);
SEE ALSO
- fchmod(2)
- change permissions of an open file
- explain_fchmod(3)
- explain fchmod(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2013 Peter Miller
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