[src/trunk]: src/sys/compat/linux/arch/mips Do not restore SR on sigreturn: t...

[manu <manu%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c76ac7f6f49d
branches:  trunk
changeset: 525704:c76ac7f6f49d
user:      manu <manu%NetBSD.org@localhost>
date:      Mon Apr 15 20:48:12 2002 +0000

description:
Do not restore SR on sigreturn: this could enable the user process to gain
unpropre privileges.

diffstat:

 sys/compat/linux/arch/mips/linux_machdep.c |  9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diffs (38 lines):

diff -r 5d92406f4b42 -r c76ac7f6f49d sys/compat/linux/arch/mips/linux_machdep.c
--- a/sys/compat/linux/arch/mips/linux_machdep.c        Mon Apr 15 20:42:37 2002 +0000
+++ b/sys/compat/linux/arch/mips/linux_machdep.c        Mon Apr 15 20:48:12 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_machdep.c,v 1.12 2002/03/31 22:22:46 christos Exp $ */
+/*     $NetBSD: linux_machdep.c,v 1.13 2002/04/15 20:48:12 manu Exp $ */
 
 /*-
  * Copyright (c) 1995, 2000, 2001 The NetBSD Foundation, Inc.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_machdep.c,v 1.12 2002/03/31 22:22:46 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_machdep.c,v 1.13 2002/04/15 20:48:12 manu Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -181,9 +181,9 @@
        sf.lsf_sc.lsc_mdhi = f->f_regs[MULHI];
        sf.lsf_sc.lsc_mdlo = f->f_regs[MULLO];
        sf.lsf_sc.lsc_pc = f->f_regs[PC];
-       sf.lsf_sc.lsc_status = f->f_regs[SR];   /* XXX */
+       sf.lsf_sc.lsc_status = f->f_regs[SR];
        sf.lsf_sc.lsc_cause = f->f_regs[CAUSE];
-       sf.lsf_sc.lsc_badvaddr = f->f_regs[BADVADDR];   /* XXX */
+       sf.lsf_sc.lsc_badvaddr = f->f_regs[BADVADDR];
 
        /* 
         * Save signal stack.  XXX broken
@@ -270,7 +270,6 @@
        f->f_regs[PC] = ksf.lsf_sc.lsc_pc;
        f->f_regs[BADVADDR] = ksf.lsf_sc.lsc_badvaddr;
        f->f_regs[CAUSE] = ksf.lsf_sc.lsc_cause;
-       f->f_regs[SR] = ksf.lsf_sc.lsc_status;
 
        /* Restore signal stack. */
        p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK;