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authorRobert Watson <rwatson@FreeBSD.org>2002-08-15 02:28:32 +0000
committerRobert Watson <rwatson@FreeBSD.org>2002-08-15 02:28:32 +0000
commit99fa64f8633ceccf45f5796608c9c90933129d81 (patch)
tree5e81b494922fb76ad7d9d18a5bebced641a20ecf /sys/kern/kern_mac.c
parentb618bb96f0b0f8739ae7638c5434aaebcc64afcb (diff)
downloadsrc-99fa64f8633ceccf45f5796608c9c90933129d81.tar.gz
src-99fa64f8633ceccf45f5796608c9c90933129d81.zip
Sync to trustedbsd_mac tree: default to sigsegv rather than copy-on-write
during a label change resulting in an mmap removal. This is "fail stop" behavior, which is preferred, although it offers slightly less transparency. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
Notes
Notes: svn path=/head/; revision=101892
Diffstat (limited to 'sys/kern/kern_mac.c')
-rw-r--r--sys/kern/kern_mac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/kern/kern_mac.c b/sys/kern/kern_mac.c
index 547647caa7bf..23c6a7c0eeab 100644
--- a/sys/kern/kern_mac.c
+++ b/sys/kern/kern_mac.c
@@ -162,7 +162,7 @@ SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_hits, CTLFLAG_RD,
static int mac_vnode_label_cache_misses = 0;
SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_misses, CTLFLAG_RD,
&mac_vnode_label_cache_misses, 0, "Cache misses on vnode labels");
-static int mac_mmap_revocation_via_cow = 1;
+static int mac_mmap_revocation_via_cow = 0;
SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW,
&mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via "
"copy-on-write semantics, or by removing all write access");