NAME
explain_flock_or_die - control advisory lock on open file and report
errors
SYNOPSIS
#include <libexplain/flock.h>
void explain_flock_or_die(int fildes, int command);
int explain_flock_on_error(int fildes, int command))
DESCRIPTION
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.
EXAMPLE
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);
SEE ALSO
flock(2)
apply or remove an advisory lock on an open file
explain_flock(3)
explain flock(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.19
Copyright (C) 2009 Peter Miller
explain_flock_or_die(3)