explain_setuid_or_die(3)

NAME
explain_setuid_or_die - set user identity and report errors
    "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 1.2
Copyright (C) 2012 Peter Miller