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authorEric Paris <eparis@redhat.com>2012-07-06 14:13:30 -0400
committerJames Morris <james.l.morris@oracle.com>2012-07-16 11:41:47 +1000
commit3d2195c3324b27e65ba53d9626a6bd91a2515797 (patch)
treec17445689c2926fa446c9bef4f5b169b60ce4f15 /security
parent64919e60915c5151b3dd4c8d2d9237a115ca990c (diff)
downloadlinux-3d2195c3324b27e65ba53d9626a6bd91a2515797.tar.gz
SELinux: do not check open perms if they are not known to policy
When I introduced open perms policy didn't understand them and I implemented them as a policycap. When I added the checking of open perm to truncate I forgot to conditionalize it on the userspace defined policy capability. Running an old policy with a new kernel will not check open on open(2) but will check it on truncate. Conditionalize the truncate check the same as the open check. Signed-off-by: Eric Paris <eparis@redhat.com> Cc: stable@vger.kernel.org # 3.4.x Signed-off-by: James Morris <james.l.morris@oracle.com>
Diffstat (limited to 'security')
-rw-r--r--security/selinux/hooks.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 372ec6502aa..ffd8900a38e 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2717,7 +2717,7 @@ static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr)
ATTR_ATIME_SET | ATTR_MTIME_SET | ATTR_TIMES_SET))
return dentry_has_perm(cred, dentry, FILE__SETATTR);
- if (ia_valid & ATTR_SIZE)
+ if (selinux_policycap_openperm && (ia_valid & ATTR_SIZE))
av |= FILE__OPEN;
return dentry_has_perm(cred, dentry, av);