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authorPaul Moore <paul.moore@hp.com>2008-01-29 08:38:19 -0500
committerJames Morris <jmorris@namei.org>2008-01-30 08:17:23 +1100
commit3bb56b25dbe0a4b44bd2ebceab6736d068e85068 (patch)
tree2285d831352b8580d401730eee98820ed54a81a0 /security/selinux/ss/policydb.c
parent224dfbd81e1ff672eb46e7695469c395bd531083 (diff)
SELinux: Add a capabilities bitmap to SELinux policy version 22
Add a new policy capabilities bitmap to SELinux policy version 22. This bitmap will enable the security server to query the policy to determine which features it supports. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/selinux/ss/policydb.c')
-rw-r--r--security/selinux/ss/policydb.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index b582aae3c62..bd7d6a00342 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -13,6 +13,11 @@
*
* Added conditional policy language extensions
*
+ * Updated: Hewlett-Packard <paul.moore@hp.com>
+ *
+ * Added support for the policy capability bitmap
+ *
+ * Copyright (C) 2007 Hewlett-Packard Development Company, L.P.
* Copyright (C) 2004-2005 Trusted Computer Solutions, Inc.
* Copyright (C) 2003 - 2004 Tresys Technology, LLC
* This program is free software; you can redistribute it and/or modify
@@ -102,6 +107,11 @@ static struct policydb_compat_info policydb_compat[] = {
.sym_num = SYM_NUM,
.ocon_num = OCON_NUM,
},
+ {
+ .version = POLICYDB_VERSION_POLCAP,
+ .sym_num = SYM_NUM,
+ .ocon_num = OCON_NUM,
+ }
};
static struct policydb_compat_info *policydb_lookup_compat(int version)
@@ -183,6 +193,8 @@ static int policydb_init(struct policydb *p)
if (rc)
goto out_free_symtab;
+ ebitmap_init(&p->policycaps);
+
out:
return rc;
@@ -673,8 +685,8 @@ void policydb_destroy(struct policydb *p)
ebitmap_destroy(&p->type_attr_map[i]);
}
kfree(p->type_attr_map);
-
kfree(p->undefined_perms);
+ ebitmap_destroy(&p->policycaps);
return;
}
@@ -1554,6 +1566,10 @@ int policydb_read(struct policydb *p, void *fp)
p->reject_unknown = !!(le32_to_cpu(buf[1]) & REJECT_UNKNOWN);
p->allow_unknown = !!(le32_to_cpu(buf[1]) & ALLOW_UNKNOWN);
+ if (p->policyvers >= POLICYDB_VERSION_POLCAP &&
+ ebitmap_read(&p->policycaps, fp) != 0)
+ goto bad;
+
info = policydb_lookup_compat(p->policyvers);
if (!info) {
printk(KERN_ERR "security: unable to find policy compat info "