Author: pluknet
Date: Fri Jun 17 07:30:56 2011
New Revision: 223182
URL: http://svn.freebsd.org/changeset/base/223182
Log:
Return empty cmdline/environ string for processes with kernel address
space. This is consistent with the behavior in linux.
PR: kern/157871
Reported by: Petr Salinger <Petr Salinger att seznam cz>
Verified on: GNU/kFreeBSD debian 8.2-1-amd64 (by reporter)
Reviewed by: kib (some time ago)
MFC after: 2 weeks
Modified:
head/sys/compat/linprocfs/linprocfs.c
Modified: head/sys/compat/linprocfs/linprocfs.c
==============================================================================
--- head/sys/compat/linprocfs/linprocfs.c Fri Jun 17 07:07:26 2011
(r223181)
+++ head/sys/compat/linprocfs/linprocfs.c Fri Jun 17 07:30:56 2011
(r223182)
@@ -1049,6 +1049,15 @@ linprocfs_doproccmdline(PFS_FILL_ARGS)
PROC_UNLOCK(p);
return (ret);
}
+
+ /*
+ * Mimic linux behavior and pass only processes with usermode
+ * address space as valid. Return zero silently otherwize.
+ */
+ if (p->p_vmspace == &vmspace0) {
+ PROC_UNLOCK(p);
+ return (0);
+ }
if (p->p_args != NULL) {
sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length);
PROC_UNLOCK(p);
@@ -1073,6 +1082,15 @@ linprocfs_doprocenviron(PFS_FILL_ARGS)
PROC_UNLOCK(p);
return (ret);
}
+
+ /*
+ * Mimic linux behavior and pass only processes with usermode
+ * address space as valid. Return zero silently otherwize.
+ */
+ if (p->p_vmspace == &vmspace0) {
+ PROC_UNLOCK(p);
+ return (0);
+ }
PROC_UNLOCK(p);
ret = linprocfs_doargv(td, p, sb, ps_string_env);
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