explain_getgroups_or_die(3) Library Functions Manual explain_getgroups_or_die(3)
NAME
explain_getgroups_or_die - get supplementary group IDs and report errors
SYNOPSIS
#include <libexplain/getgroups.h>
void explain_getgroups_or_die(int data_size, gid_t *data);
int explain_getgroups_on_error(int data_size, gid_t *data);
DESCRIPTION
The explain_getgroups_or_die function is used to call the getgroups(2) system call. On failure an explanation will be printed to stderr,
obtained from the explain_getgroups(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_getgroups_on_error function is used to call the getgroups(2) system call. On failure an explanation will be printed to stderr,
obtained from the explain_getgroups(3) function, but still returns to the caller.
data_size
The data_size, exactly as to be passed to the getgroups(2) system call.
data The data, exactly as to be passed to the getgroups(2) system call.
RETURN VALUE
The explain_getgroups_or_die function only returns on success, see getgroups(2) for more information. On failure, prints an explanation and
exits, it does not return.
The explain_getgroups_on_error function always returns the value return by the wrapped getgroups(2) system call.
EXAMPLE
The explain_getgroups_or_die function is intended to be used in a fashion similar to the following example:
explain_getgroups_or_die(data_size, data);
SEE ALSO
getgroups(2)
get/set list of supplementary group IDs
explain_getgroups(3)
explain getgroups(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2009 Peter Miller
explain_getgroups_or_die(3)