aboutsummaryrefslogtreecommitdiffstats
path: root/security/selinux/ss
diff options
context:
space:
mode:
authorEric Paris <eparis@redhat.com>2010-06-11 12:37:05 -0400
committerJames Morris <jmorris@namei.org>2010-08-02 15:34:30 +1000
commit9ee0c823c18119914283358b35a1c3ebb14c2f90 (patch)
tree6e29e71f1c9c7ae65d92a15a3b3220ae1d173407 /security/selinux/ss
parentd2f8b2348f3406652ee00ee7221441bd36fe0195 (diff)
downloadmrst-s0i3-test-9ee0c823c18119914283358b35a1c3ebb14c2f90.tar.gz
mrst-s0i3-test-9ee0c823c18119914283358b35a1c3ebb14c2f90.tar.xz
mrst-s0i3-test-9ee0c823c18119914283358b35a1c3ebb14c2f90.zip
SELinux: seperate range transition rules to a seperate function
Move the range transition rule to a separate function, range_read(), rather than doing it all in policydb_read() Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/selinux/ss')
-rw-r--r--security/selinux/ss/policydb.c139
1 files changed, 75 insertions, 64 deletions
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index c57802a164d..a39d38af220 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -1701,6 +1701,78 @@ u32 string_to_av_perm(struct policydb *p, u16 tclass, const char *name)
return 1U << (perdatum->value-1);
}
+static int range_read(struct policydb *p, void *fp)
+{
+ struct range_trans *rt = NULL;
+ struct mls_range *r = NULL;
+ int i, rc;
+ __le32 buf[2];
+ u32 nel;
+
+ if (p->policyvers < POLICYDB_VERSION_MLS)
+ return 0;
+
+ rc = next_entry(buf, fp, sizeof(u32));
+ if (rc)
+ goto out;
+
+ nel = le32_to_cpu(buf[0]);
+ for (i = 0; i < nel; i++) {
+ rc = -ENOMEM;
+ rt = kzalloc(sizeof(*rt), GFP_KERNEL);
+ if (!rt)
+ goto out;
+
+ rc = next_entry(buf, fp, (sizeof(u32) * 2));
+ if (rc)
+ goto out;
+
+ rt->source_type = le32_to_cpu(buf[0]);
+ rt->target_type = le32_to_cpu(buf[1]);
+ if (p->policyvers >= POLICYDB_VERSION_RANGETRANS) {
+ rc = next_entry(buf, fp, sizeof(u32));
+ if (rc)
+ goto out;
+ rt->target_class = le32_to_cpu(buf[0]);
+ } else
+ rt->target_class = p->process_class;
+
+ rc = -EINVAL;
+ if (!policydb_type_isvalid(p, rt->source_type) ||
+ !policydb_type_isvalid(p, rt->target_type) ||
+ !policydb_class_isvalid(p, rt->target_class))
+ goto out;
+
+ rc = -ENOMEM;
+ r = kzalloc(sizeof(*r), GFP_KERNEL);
+ if (!r)
+ goto out;
+
+ rc = mls_read_range_helper(r, fp);
+ if (rc)
+ goto out;
+
+ rc = -EINVAL;
+ if (!mls_range_isvalid(p, r)) {
+ printk(KERN_WARNING "SELinux: rangetrans: invalid range\n");
+ goto out;
+ }
+
+ rc = hashtab_insert(p->range_tr, rt, r);
+ if (rc)
+ goto out;
+
+ rt = NULL;
+ r = NULL;
+ }
+ rangetr_hash_eval(p->range_tr);
+ rc = 0;
+out:
+ kfree(rt);
+ kfree(r);
+ return rc;
+}
+
/*
* Read the configuration data from a policy database binary
* representation file into a policy database structure.
@@ -1717,8 +1789,6 @@ int policydb_read(struct policydb *p, void *fp)
u32 len, len2, nprim, nel, nel2;
char *policydb_str;
struct policydb_compat_info *info;
- struct range_trans *rt;
- struct mls_range *r;
rc = policydb_init(p);
if (rc)
@@ -2131,68 +2201,9 @@ int policydb_read(struct policydb *p, void *fp)
}
}
- if (p->policyvers >= POLICYDB_VERSION_MLS) {
- int new_rangetr = p->policyvers >= POLICYDB_VERSION_RANGETRANS;
- rc = next_entry(buf, fp, sizeof(u32));
- if (rc < 0)
- goto bad;
- nel = le32_to_cpu(buf[0]);
- for (i = 0; i < nel; i++) {
- rt = kzalloc(sizeof(*rt), GFP_KERNEL);
- if (!rt) {
- rc = -ENOMEM;
- goto bad;
- }
- rc = next_entry(buf, fp, (sizeof(u32) * 2));
- if (rc < 0) {
- kfree(rt);
- goto bad;
- }
- rt->source_type = le32_to_cpu(buf[0]);
- rt->target_type = le32_to_cpu(buf[1]);
- if (new_rangetr) {
- rc = next_entry(buf, fp, sizeof(u32));
- if (rc < 0) {
- kfree(rt);
- goto bad;
- }
- rt->target_class = le32_to_cpu(buf[0]);
- } else
- rt->target_class = p->process_class;
- if (!policydb_type_isvalid(p, rt->source_type) ||
- !policydb_type_isvalid(p, rt->target_type) ||
- !policydb_class_isvalid(p, rt->target_class)) {
- kfree(rt);
- rc = -EINVAL;
- goto bad;
- }
- r = kzalloc(sizeof(*r), GFP_KERNEL);
- if (!r) {
- kfree(rt);
- rc = -ENOMEM;
- goto bad;
- }
- rc = mls_read_range_helper(r, fp);
- if (rc) {
- kfree(rt);
- kfree(r);
- goto bad;
- }
- if (!mls_range_isvalid(p, r)) {
- printk(KERN_WARNING "SELinux: rangetrans: invalid range\n");
- kfree(rt);
- kfree(r);
- goto bad;
- }
- rc = hashtab_insert(p->range_tr, rt, r);
- if (rc) {
- kfree(rt);
- kfree(r);
- goto bad;
- }
- }
- rangetr_hash_eval(p->range_tr);
- }
+ rc = range_read(p, fp);
+ if (rc)
+ goto bad;
p->type_attr_map = kmalloc(p->p_types.nprim * sizeof(struct ebitmap), GFP_KERNEL);
if (!p->type_attr_map)