explain_flock_or_die3
Control advisory lock on open file and report errors
Usage
#include <libexplain/flock.h>
void explain_flock_or_die(int fildes, int command);
int explain_flock_on_error(int fildes, int command))
Overview
The explain_flock_or_die function is used to call the flock(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_flock(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_flock_on_error function is used to call the flock(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_flock(3) function, but still returns to the caller.
fildes
|
The fildes, exactly as to be passed to the flock(2) system call. |
|---|---|
command
|
The command, exactly as to be passed to the flock(2) system call. |
Return value
The explain_flock_or_die function only returns on success, see flock(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_flock_on_error function always returns the value return by the wrapped flock(2) system call.
Examples
The explain_flock_or_die function is intended to be used in a fashion similar to the following example:
explain_flock_or_die(fildes, command);Releases
6 releases since Debian 7 (Wheezy); the text changed 1 time.