This change refactors the process group implementation and adds support for sessions. The setsid(2) and getsid(2) system calls were added. psctl(2) now has PSCTL_TTYNAME, which lets you get the name of a process's terminal, and ps(1) now uses it. The initial terminal is now called /dev/tty1. /dev/tty is now a factory for the current terminal. A global lock now protects the process hierarchy which makes it safe to access other processes. This refactor removes potential vulnerabilities and increases system robustness. A number of terminal ioctls have been added. This is a compatible ABI change.
30 lines
974 B
C
30 lines
974 B
C
/*
|
|
* Copyright (c) 2016 Jonas 'Sortie' Termansen.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* unistd/setsid.c
|
|
* Enter a new session.
|
|
*/
|
|
|
|
#include <sys/syscall.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
DEFN_SYSCALL0(pid_t, sys_setsid, SYSCALL_SETSID);
|
|
|
|
pid_t setsid(void)
|
|
{
|
|
return sys_setsid();
|
|
}
|