[PATCH] selinux: endian notations

This patch adds endian notations to the SELinux code.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 34 insertions, 26 deletions

diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 7b03fa0f92b0..0a758323a9cf 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -744,7 +744,8 @@ int policydb_context_isvalid(struct policydb *p, struct context *c)
  */
 static int mls_read_range_helper(struct mls_range *r, void *fp)
 {
-	u32 buf[2], items;
+	__le32 buf[2];
+	u32 items;
 	int rc;
 
 	rc = next_entry(buf, fp, sizeof(u32));
@@ -805,7 +806,7 @@ static int context_read_and_validate(struct context *c,
 				     struct policydb *p,
 				     void *fp)
 {
-	u32 buf[3];
+	__le32 buf[3];
 	int rc;
 
 	rc = next_entry(buf, fp, sizeof buf);
@@ -845,7 +846,8 @@ static int perm_read(struct policydb *p, struct hashtab *h, void *fp)
 	char *key = NULL;
 	struct perm_datum *perdatum;
 	int rc;
-	u32 buf[2], len;
+	__le32 buf[2];
+	u32 len;
 
 	perdatum = kmalloc(sizeof(*perdatum), GFP_KERNEL);
 	if (!perdatum) {
@@ -885,7 +887,8 @@ static int common_read(struct policydb *p, struct hashtab *h, void *fp)
 {
 	char *key = NULL;
 	struct common_datum *comdatum;
-	u32 buf[4], len, nel;
+	__le32 buf[4];
+	u32 len, nel;
 	int i, rc;
 
 	comdatum = kmalloc(sizeof(*comdatum), GFP_KERNEL);
@@ -939,7 +942,8 @@ static int read_cons_helper(struct constraint_node **nodep, int ncons,
 {
 	struct constraint_node *c, *lc;
 	struct constraint_expr *e, *le;
-	u32 buf[3], nexpr;
+	__le32 buf[3];
+	u32 nexpr;
 	int rc, i, j, depth;
 
 	lc = NULL;
@@ -1023,7 +1027,8 @@ static int class_read(struct policydb *p, struct hashtab *h, void *fp)
 {
 	char *key = NULL;
 	struct class_datum *cladatum;
-	u32 buf[6], len, len2, ncons, nel;
+	__le32 buf[6];
+	u32 len, len2, ncons, nel;
 	int i, rc;
 
 	cladatum = kmalloc(sizeof(*cladatum), GFP_KERNEL);
@@ -1117,7 +1122,8 @@ static int role_read(struct policydb *p, struct hashtab *h, void *fp)
 	char *key = NULL;
 	struct role_datum *role;
 	int rc;
-	u32 buf[2], len;
+	__le32 buf[2];
+	u32 len;
 
 	role = kmalloc(sizeof(*role), GFP_KERNEL);
 	if (!role) {
@@ -1177,7 +1183,8 @@ static int type_read(struct policydb *p, struct hashtab *h, void *fp)
 	char *key = NULL;
 	struct type_datum *typdatum;
 	int rc;
-	u32 buf[3], len;
+	__le32 buf[3];
+	u32 len;
 
 	typdatum = kmalloc(sizeof(*typdatum),GFP_KERNEL);
 	if (!typdatum) {
@@ -1221,7 +1228,7 @@ bad:
  */
 static int mls_read_level(struct mls_level *lp, void *fp)
 {
-	u32 buf[1];
+	__le32 buf[1];
 	int rc;
 
 	memset(lp, 0, sizeof(*lp));
@@ -1249,7 +1256,8 @@ static int user_read(struct policydb *p, struct hashtab *h, void *fp)
 	char *key = NULL;
 	struct user_datum *usrdatum;
 	int rc;
-	u32 buf[2], len;
+	__le32 buf[2];
+	u32 len;
 
 	usrdatum = kmalloc(sizeof(*usrdatum), GFP_KERNEL);
 	if (!usrdatum) {
@@ -1303,7 +1311,8 @@ static int sens_read(struct policydb *p, struct hashtab *h, void *fp)
 	char *key = NULL;
 	struct level_datum *levdatum;
 	int rc;
-	u32 buf[2], len;
+	__le32 buf[2];
+	u32 len;
 
 	levdatum = kmalloc(sizeof(*levdatum), GFP_ATOMIC);
 	if (!levdatum) {
@@ -1354,7 +1363,8 @@ static int cat_read(struct policydb *p, struct hashtab *h, void *fp)
 	char *key = NULL;
 	struct cat_datum *catdatum;
 	int rc;
-	u32 buf[3], len;
+	__le32 buf[3];
+	u32 len;
 
 	catdatum = kmalloc(sizeof(*catdatum), GFP_ATOMIC);
 	if (!catdatum) {
@@ -1417,7 +1427,8 @@ int policydb_read(struct policydb *p, void *fp)
 	struct ocontext *l, *c, *newc;
 	struct genfs *genfs_p, *genfs, *newgenfs;
 	int i, j, rc;
-	u32 buf[8], len, len2, config, nprim, nel, nel2;
+	__le32 buf[8];
+	u32 len, len2, config, nprim, nel, nel2;
 	char *policydb_str;
 	struct policydb_compat_info *info;
 	struct range_trans *rt, *lrt;
@@ -1433,17 +1444,14 @@ int policydb_read(struct policydb *p, void *fp)
 	if (rc < 0)
 		goto bad;
 
-	for (i = 0; i < 2; i++)
-		buf[i] = le32_to_cpu(buf[i]);
-
-	if (buf[0] != POLICYDB_MAGIC) {
+	if (le32_to_cpu(buf[0]) != POLICYDB_MAGIC) {
 		printk(KERN_ERR "security:  policydb magic number 0x%x does "
 		       "not match expected magic number 0x%x\n",
-		       buf[0], POLICYDB_MAGIC);
+		       le32_to_cpu(buf[0]), POLICYDB_MAGIC);
 		goto bad;
 	}
 
-	len = buf[1];
+	len = le32_to_cpu(buf[1]);
 	if (len != strlen(POLICYDB_STRING)) {
 		printk(KERN_ERR "security:  policydb string length %d does not "
 		       "match expected length %Zu\n",
@@ -1478,19 +1486,17 @@ int policydb_read(struct policydb *p, void *fp)
 	rc = next_entry(buf, fp, sizeof(u32)*4);
 	if (rc < 0)
 		goto bad;
-	for (i = 0; i < 4; i++)
-		buf[i] = le32_to_cpu(buf[i]);
 
-	p->policyvers = buf[0];
+	p->policyvers = le32_to_cpu(buf[0]);
 	if (p->policyvers < POLICYDB_VERSION_MIN ||
 	    p->policyvers > POLICYDB_VERSION_MAX) {
 	    	printk(KERN_ERR "security:  policydb version %d does not match "
 	    	       "my version range %d-%d\n",
-	    	       buf[0], POLICYDB_VERSION_MIN, POLICYDB_VERSION_MAX);
+	    	       le32_to_cpu(buf[0]), POLICYDB_VERSION_MIN, POLICYDB_VERSION_MAX);
 	    	goto bad;
 	}
 
-	if ((buf[1] & POLICYDB_CONFIG_MLS)) {
+	if ((le32_to_cpu(buf[1]) & POLICYDB_CONFIG_MLS)) {
 		if (ss_initialized && !selinux_mls_enabled) {
 			printk(KERN_ERR "Cannot switch between non-MLS and MLS "
 			       "policies\n");
@@ -1519,9 +1525,11 @@ int policydb_read(struct policydb *p, void *fp)
 		goto bad;
 	}
 
-	if (buf[2] != info->sym_num || buf[3] != info->ocon_num) {
+	if (le32_to_cpu(buf[2]) != info->sym_num ||
+		le32_to_cpu(buf[3]) != info->ocon_num) {
 		printk(KERN_ERR "security:  policydb table sizes (%d,%d) do "
-		       "not match mine (%d,%d)\n", buf[2], buf[3],
+		       "not match mine (%d,%d)\n", le32_to_cpu(buf[2]),
+			le32_to_cpu(buf[3]),
 		       info->sym_num, info->ocon_num);
 		goto bad;
 	}