explain_setuid_or_die man page

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

Referenced By

explain(3), explain_setuid(3).