NAME¶

explain_setsid_or_die - sets process group ID and report errors

SYNOPSIS¶

#include <libexplain/setsid.h>

pid_t explain_setsid_or_die(void);
pid_t explain_setsid_on_error(void);

DESCRIPTION¶

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

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

RETURN VALUE¶

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

The explain_setsid_on_error function always returns the value return by the wrapped setsid(2) system call.

EXAMPLE¶

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

explain_setsid_or_die();

SEE ALSO¶

setsid(2)

creates a session and sets the process group ID

explain_setsid(3)

explain setsid(2) errors

exit(2)

terminate the calling process

COPYRIGHT¶

libexplain version 1.4
Copyright (C) 2011 Peter Miller