Date: Thu, 25 Nov 1999 19:53:28 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Warner Losh <imp@village.org> Cc: freebsd-current@freebsd.org, security@freebsd.org Subject: Re: ps on 4.0-current Message-ID: <786.943556008@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 24 Nov 1999 01:01:33 MST." <199911240801.BAA19058@harmony.village.org>
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As I've understood the conclusion of this thread, we want a
sysctl, and we want it open as default. This patch should
do that.
Once Warner nods in the vertical direction it will be committed.
Poul-Henning
Index: kern/kern_exec.c
===================================================================
RCS file: /home/ncvs/src/sys/kern/kern_exec.c,v
retrieving revision 1.103
diff -u -r1.103 kern_exec.c
--- kern_exec.c 1999/11/16 20:31:51 1.103
+++ kern_exec.c 1999/11/25 18:32:41
@@ -77,6 +77,9 @@
SYSCTL_LONG(_kern, OID_AUTO, ps_arg_cache_limit, CTLFLAG_RW,
&ps_arg_cache_limit, "");
+int ps_argsopen = 1;
+SYSCTL_INT(_kern, OID_AUTO, ps_argsopen, CTLFLAG_RW, &ps_argsopen, 0, "");
+
/*
* Each of the items is a pointer to a `const struct execsw', hence the
* double pointer here.
Index: kern/kern_proc.c
===================================================================
RCS file: /home/ncvs/src/sys/kern/kern_proc.c,v
retrieving revision 1.61
diff -u -r1.61 kern_proc.c
--- kern_proc.c 1999/11/21 19:03:09 1.61
+++ kern_proc.c 1999/11/25 18:31:51
@@ -633,7 +633,7 @@
if (!p)
return (0);
- if (p_trespass(curproc, p))
+ if ((!ps_argsopen) && p_trespass(curproc, p))
return (0);
if (req->newptr && curproc != p)
Index: miscfs/procfs/procfs_status.c
===================================================================
RCS file: /home/ncvs/src/sys/miscfs/procfs/procfs_status.c,v
retrieving revision 1.18
diff -u -r1.18 procfs_status.c
--- procfs_status.c 1999/11/21 19:03:19 1.18
+++ procfs_status.c 1999/11/25 18:32:22
@@ -183,7 +183,7 @@
* Linux behaviour is to return zero-length in this case.
*/
- if (p->p_args && !p_trespass(curp, p)) {
+ if (p->p_args && (ps_argsopen || !p_trespass(curp, p))) {
bp = p->p_args->ar_args;
buflen = p->p_args->ar_length;
buf = 0;
Index: sys/proc.h
===================================================================
RCS file: /home/ncvs/src/sys/sys/proc.h,v
retrieving revision 1.92
diff -u -r1.92 proc.h
--- proc.h 1999/11/21 19:03:20 1.92
+++ proc.h 1999/11/25 18:31:16
@@ -384,6 +384,7 @@
extern int whichidqs; /* Bit mask summary of non-empty Q's. */
extern u_long ps_arg_cache_limit;
+extern int ps_argsopen;
struct proc *pfind __P((pid_t)); /* Find process by id. */
struct pgrp *pgfind __P((pid_t)); /* Find process group by id. */
--
Poul-Henning Kamp FreeBSD coreteam member
phk@FreeBSD.ORG "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!
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