NAME

explain_getresgid_or_die - get r/e/s group IDs and report errors

SYNOPSIS

#include <libexplain/getresgid.h>

void explain_getresgid_or_die(gid_t *rgid, gid_t *egid, gid_t *sgid);
int explain_getresgid_on_error(gid_t *rgid, gid_t *egid, gid_t *sgid);

DESCRIPTION

The explain_getresgid_or_die function is used to call the getresgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getresgid(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_getresgid_on_error function is used to call the getresgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getresgid(3) function, but still returns to the caller.

rgid: The rgid, exactly as to be passed to the getresgid(2) system call.
egid: The egid, exactly as to be passed to the getresgid(2) system call.
sgid: The sgid, exactly as to be passed to the getresgid(2) system call.

RETURN VALUE

The explain_getresgid_or_die function only returns on success, see getresgid(2) for more information. On failure, prints an explanation and exits, it does not return.

The explain_getresgid_on_error function always returns the value return by the wrapped getresgid(2) system call.

EXAMPLE

The explain_getresgid_or_die function is intended to be used in a fashion similar to the following example:

explain_getresgid_or_die(rgid, egid, sgid);

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

EXAMPLE

SEE ALSO

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