|explain_setuid_or_die(3)||Library Functions Manual||explain_setuid_or_die(3)|
explain_setuid_or_die - set user identity and report errors
void explain_setuid_or_die(int uid);
int explain_setuid_on_error(int uid);
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.
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.
The explain_setuid_or_die function is intended to be used in a fashion similar to the following example:
libexplain version 1.4
Copyright (C) 2012 Peter Miller