explain_setresuid_or_die3
Set r/e/s user id and report errors
Usage
#include <libexplain/setresuid.h>
void explain_setresuid_or_die(uid_t ruid, uid_t euid, uid_t suid);
int explain_setresuid_on_error(uid_t ruid, uid_t euid, uid_t suid);
Overview
The explain_setresuid_or_die function is used to call the setresuid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setresuid(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_setresuid_on_error function is used to call the setresuid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setresuid(3) function, but still returns to the caller.
ruid
|
The ruid, exactly as to be passed to the setresuid(2) system call. |
|---|---|
euid
|
The euid, exactly as to be passed to the setresuid(2) system call. |
suid
|
The suid, exactly as to be passed to the setresuid(2) system call. |
Return value
The explain_setresuid_or_die function only returns on success, see setresuid(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_setresuid_on_error function always returns the value return by the wrapped setresuid(2) system call.
Examples
The explain_setresuid_or_die function is intended to be used in a fashion similar to the following example:
explain_setresuid_or_die(ruid, euid, suid);Releases
Unchanged in 5 releases since Debian 9 (Stretch).