explain_setresgid_or_die3
Set r/e/s group id and report errors
Usage
#include <libexplain/setresgid.h>
void explain_setresgid_or_die(gid_t rgid, gid_t egid, gid_t sgid);
int explain_setresgid_on_error(gid_t rgid, gid_t egid, gid_t sgid);
Overview
The explain_setresgid_or_die function is used to call the setresgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setresgid(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_setresgid_on_error function is used to call the setresgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setresgid(3) function, but still returns to the caller.
rgid
|
The rgid, exactly as to be passed to the setresgid(2) system call. |
|---|---|
egid
|
The egid, exactly as to be passed to the setresgid(2) system call. |
sgid
|
The sgid, exactly as to be passed to the setresgid(2) system call. |
Return value
The explain_setresgid_or_die function only returns on success, see setresgid(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_setresgid_on_error function always returns the value return by the wrapped setresgid(2) system call.
Examples
The explain_setresgid_or_die function is intended to be used in a fashion similar to the following example:
explain_setresgid_or_die(rgid, egid, sgid);Releases
Unchanged in 5 releases since Debian 9 (Stretch).