explain_getresuid_or_die3
Get r/e/s user ids and report errors
Usage
#include <libexplain/getresuid.h>
void explain_getresuid_or_die(uid_t *ruid, uid_t *euid, uid_t *suid);
int explain_getresuid_on_error(uid_t *ruid, uid_t *euid, uid_t *suid);
Overview
The explain_getresuid_or_die function is used to call the getresuid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getresuid(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_getresuid_on_error function is used to call the getresuid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getresuid(3) function, but still returns to the caller.
ruid
|
The ruid, exactly as to be passed to the getresuid(2) system call. |
|---|---|
euid
|
The euid, exactly as to be passed to the getresuid(2) system call. |
suid
|
The suid, exactly as to be passed to the getresuid(2) system call. |
Return value
The explain_getresuid_or_die function only returns on success, see getresuid(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_getresuid_on_error function always returns the value return by the wrapped getresuid(2) system call.
Examples
The explain_getresuid_or_die function is intended to be used in a fashion similar to the following example:
explain_getresuid_or_die(ruid, euid, suid);Releases
Unchanged in 5 releases since Debian 9 (Stretch).