Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Validate that pgid argument to TIOCSPGRP in part of current session.

Browse Source 
Treat +ve numbers as process group ids and -ve as pids (see tcsetpgrp() in part of current session.
Treat +ve numbers as process group ids and -ve as pids - see tcsetpgrp(3).
(approved by christos)
This commit is contained in:
dsl 2003-03-12 23:00:03 +00:00
parent 5786e3a6e8
commit 741870b7ef
1 changed files with 15 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
sys/kern/sys_pipe.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: sys_pipe.c,v 1.36 2003/02/14 13:16:44 pk Exp $ */
/* $NetBSD: sys_pipe.c,v 1.37 2003/03/12 23:00:03 dsl Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
@ -83,7 +83,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sys_pipe.c,v 1.36 2003/02/14 13:16:44 pk Exp $");
__KERNEL_RCSID(0, "$NetBSD: sys_pipe.c,v 1.37 2003/03/12 23:00:03 dsl Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -327,7 +327,6 @@ pipe_create(pipep, allockva)
PIPE_TIMESTAMP(&pipe->pipe_ctime);
pipe->pipe_atime = pipe->pipe_ctime;
pipe->pipe_mtime = pipe->pipe_ctime;
pipe->pipe_pgid = NO_PID;
simple_lock_init(&pipe->pipe_slock);
lockinit(&pipe->pipe_lock, PRIBIO | PCATCH, "pipelk", 0, 0);
@ -390,12 +389,12 @@ pipeselwakeup(selp, sigp)
return;
pid = sigp->pipe_pgid;
if (pid == NO_PID || pid == 0)
if (pid == 0)
return;
if (pid < 0)
gsignal(-pid, SIGIO);
else if ((p = pfind(pid)) != NULL)
if (pid > 0)
gsignal(pid, SIGIO);
else if ((p = pfind(-pid)) != NULL)
psignal(p, SIGIO);
}
@ -1075,6 +1074,8 @@ pipe_ioctl(fp, cmd, data, p)
struct proc *p;
{
struct pipe *pipe = (struct pipe *)fp->f_data;
pid_t pgid;
int error;
switch (cmd) {
@ -1103,7 +1104,13 @@ pipe_ioctl(fp, cmd, data, p)
return (0);
case TIOCSPGRP:
pipe->pipe_pgid = *(int *)data;
pgid = *(int *)data;
if (pgid != 0) {
error = pgid_in_session(p, pgid);
if (error)
return error;
}
pipe->pipe_pgid = pgid;
return (0);
case TIOCGPGRP: