explain_setpgid_or_die3
Set process group and report errors
Usage
#include <libexplain/setpgid.h>
void explain_setpgid_or_die(pid_t pid, pid_t pgid);
int explain_setpgid_on_error(pid_t pid, pid_t pgid);
Overview
The explain_setpgid_or_die function is used to call the setpgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setpgid(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_setpgid_on_error function is used to call the setpgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setpgid(3) function, but still returns to the caller.
pid
|
The pid, exactly as to be passed to the setpgid(2) system call. |
|---|---|
pgid
|
The pgid, exactly as to be passed to the setpgid(2) system call. |
Return value
The explain_setpgid_or_die function only returns on success, see setpgid(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_setpgid_on_error function always returns the value return by the wrapped setpgid(2) system call.
Examples
The explain_setpgid_or_die function is intended to be used in a fashion similar to the following example:
explain_setpgid_or_die(pid, pgid);Releases
6 releases since Debian 7 (Wheezy); the text changed 1 time.