NAME¶

explain_setuid_or_die - set user identity and report errors

SYNOPSIS¶

#include <libexplain/setuid.h>

void explain_setuid_or_die(int uid);
int explain_setuid_on_error(int uid);

DESCRIPTION¶

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

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

uid

The uid, exactly as to be passed to the setuid(2) system call.

RETURN VALUE¶

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

The explain_setuid_on_error function always returns the value return by the wrapped setuid(2) system call.

EXAMPLE¶

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

explain_setuid_or_die(uid);

SEE ALSO¶

setuid(2)

set user identity

explain_setuid(3)

explain setuid(2) errors

exit(2)

terminate the calling process

COPYRIGHT¶

libexplain version 1.4
Copyright (C) 2012 Peter Miller