explain_getresgid_or_die3
Get r/e/s group ids and report errors
Usage
#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);
Overview
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.
Examples
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);Releases
Unchanged in 5 releases since Debian 9 (Stretch).