NAME

explain_setresuid_or_die - set r/e/s user ID and report errors

SYNOPSIS

#include <libexplain/setresuid.h>

void explain_setresuid_or_die(uid_t ruid, uid_t euid, uid_t suid);
int explain_setresuid_on_error(uid_t ruid, uid_t euid, uid_t suid);

DESCRIPTION

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

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

ruid: The ruid, exactly as to be passed to the setresuid(2) system call.
euid: The euid, exactly as to be passed to the setresuid(2) system call.
suid: The suid, exactly as to be passed to the setresuid(2) system call.

RETURN VALUE

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

The explain_setresuid_on_error function always returns the value return by the wrapped setresuid(2) system call.

EXAMPLE

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

explain_setresuid_or_die(ruid, euid, suid);

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

EXAMPLE

SEE ALSO

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