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Added a sysctl variable kern.sugid_coredump for controlling coredump

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behavior of setuid/setgid binaries that defaults to 0 (coredump disabled).
This commit is contained in:
David Greenman 1998-06-28 08:37:45 +00:00
parent b66655cf37
commit c87e2930e6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=37226
1 changed files with 7 additions and 2 deletions
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9
sys/kern/kern_sig.c
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_sig.c 8.7 (Berkeley) 4/18/94
* $Id: kern_sig.c,v 1.40 1998/03/03 20:55:26 tegge Exp $
* $Id: kern_sig.c,v 1.41 1998/06/07 17:11:35 dfr Exp $
*/
#include "opt_compat.h"
@ -44,6 +44,7 @@
#define SIGPROP /* include signal properties table */
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/sysproto.h>
#include <sys/signalvar.h>
#include <sys/resourcevar.h>
@ -59,6 +60,7 @@
#include <sys/syslog.h>
#include <sys/stat.h>
#include <sys/sysent.h>
#include <sys/sysctl.h>
#include <machine/cpu.h>
#ifdef SMP
@ -89,6 +91,9 @@ static void stop __P((struct proc *));
(pc)->pc_ucred->cr_uid == (q)->p_ucred->cr_uid || \
((signum) == SIGCONT && (q)->p_session == (p)->p_session))
static int sugid_coredump;
SYSCTL_INT(_kern, OID_AUTO, sugid_coredump, CTLFLAG_RW, &sugid_coredump, 0, "");
#ifndef _SYS_SYSPROTO_H_
struct sigaction_args {
int signum;
@ -1259,7 +1264,7 @@ coredump(p)
STOPEVENT(p, S_CORE, 0);
if (p->p_flag & P_SUGID)
if (sugid_coredump == 0 && p->p_flag & P_SUGID)
return (EFAULT);
if (ctob(UPAGES + vm->vm_dsize + vm->vm_ssize) >=
p->p_rlimit[RLIMIT_CORE].rlim_cur)