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:

SEE ALSO

setuid(2)

set user identity

explain_setuid(3)

explain setuid(2) errors

exit(2)

terminate the calling process

COPYRIGHT

libexplain version 1.3 Copyright (C) 2012 Peter Miller