[CIFS] Fix some endianness problems in new acl code

Signed-off-by: Steve French <sfrench@us.ibm.com>

3 files changed, 26 insertions, 27 deletions

diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 601587724f9d..4735e9b47590 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -31,7 +31,7 @@
 
 #ifdef CONFIG_CIFS_EXPERIMENTAL
 
-struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
+static struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
         {{1, 0, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0} }, "null user"},
         {{1, 1, {0, 0, 0, 0, 0, 1}, {0, 0, 0, 0, 0} }, "nobody"},
         {{1, 1, {0, 0, 0, 0, 0, 5}, {11, 0, 0, 0, 0} }, "net-users"},
@@ -192,14 +192,15 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl)
         /* BB need to add parm so we can store the SID BB */
 
         /* validate that we do not go past end of acl */
-        if (end_of_acl < (char *)pdacl + pdacl->size) {
+        if (end_of_acl < (char *)pdacl + le16_to_cpu(pdacl->size)) {
                 cERROR(1, ("ACL too small to parse DACL"));
                 return;
         }
 
 #ifdef CONFIG_CIFS_DEBUG2
         cFYI(1, ("DACL revision %d size %d num aces %d",
-                pdacl->revision, pdacl->size, pdacl->num_aces));
+                le16_to_cpu(pdacl->revision), le16_to_cpu(pdacl->size),
+                le32_to_cpu(pdacl->num_aces)));
 #endif
 
         acl_base = (char *)pdacl;
@@ -255,7 +256,6 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl)
 
 static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
 {
-        int num_subauth;
 
         /* BB need to add parm so we can store the SID BB */
 
@@ -265,14 +265,13 @@ static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
                 return -EINVAL;
         }
 
-        num_subauth = cpu_to_le32(psid->num_subauth);
-        if (num_subauth) {
+        if (psid->num_subauth) {
 #ifdef CONFIG_CIFS_DEBUG2
                 int i;
                 cFYI(1, ("SID revision %d num_auth %d First subauth 0x%x",
                         psid->revision, psid->num_subauth, psid->sub_auth[0]));
 
-                for (i = 0; i < num_subauth; ++i) {
+                for (i = 0; i < psid->num_subauth; i++) {
                         cFYI(1, ("SID sub_auth[%d]: 0x%x ", i,
                                 le32_to_cpu(psid->sub_auth[i])));
                 }
@@ -280,7 +279,7 @@ static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
                 /* BB add length check to make sure that we do not have huge
                         num auths and therefore go off the end */
                 cFYI(1, ("RID 0x%x",
-                        le32_to_cpu(psid->sub_auth[num_subauth-1])));
+                        le32_to_cpu(psid->sub_auth[psid->num_subauth-1])));
 #endif
         }
 
@@ -297,17 +296,18 @@ int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len)
         char *end_of_acl = ((char *)pntsd) + acl_len;
 
         owner_sid_ptr = (struct cifs_sid *)((char *)pntsd +
-                                cpu_to_le32(pntsd->osidoffset));
+                                le32_to_cpu(pntsd->osidoffset));
         group_sid_ptr = (struct cifs_sid *)((char *)pntsd +
-                                cpu_to_le32(pntsd->gsidoffset));
+                                le32_to_cpu(pntsd->gsidoffset));
         dacl_ptr = (struct cifs_acl *)((char *)pntsd +
-                                cpu_to_le32(pntsd->dacloffset));
+                                le32_to_cpu(pntsd->dacloffset));
 #ifdef CONFIG_CIFS_DEBUG2
         cFYI(1, ("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
                  "sacloffset 0x%x dacloffset 0x%x",
-                 pntsd->revision, pntsd->type,
-                 pntsd->osidoffset, pntsd->gsidoffset, pntsd->sacloffset,
-                 pntsd->dacloffset));
+                 pntsd->revision, pntsd->type, le32_to_cpu(pntsd->osidoffset),
+                 le32_to_cpu(pntsd->gsidoffset),
+                 le32_to_cpu(pntsd->sacloffset),
+                 le32_to_cpu(pntsd->dacloffset));
 #endif
         rc = parse_sid(owner_sid_ptr, end_of_acl);
         if (rc)
diff --git a/fs/cifs/cifsacl.h b/fs/cifs/cifsacl.h
index 0362cd11f03e..fa01053fc5fa 100644
--- a/fs/cifs/cifsacl.h
+++ b/fs/cifs/cifsacl.h
@@ -27,25 +27,25 @@
 #define SIDNAMELENGTH 20 /* long enough for the ones we care about */
 
 struct cifs_ntsd {
-        __u16 revision; /* revision level */
-        __u16 type;
-        __u32 osidoffset;
-        __u32 gsidoffset;
-        __u32 sacloffset;
-        __u32 dacloffset;
+        __le16 revision; /* revision level */
+        __le16 type;
+        __le32 osidoffset;
+        __le32 gsidoffset;
+        __le32 sacloffset;
+        __le32 dacloffset;
 } __attribute__((packed));
 
 struct cifs_sid {
         __u8 revision; /* revision level */
         __u8 num_subauth;
         __u8 authority[6];
-        __u32 sub_auth[5]; /* sub_auth[num_subauth] */
+        __le32 sub_auth[5]; /* sub_auth[num_subauth] */ /* BB FIXME endianness BB */
 } __attribute__((packed));
 
 struct cifs_acl {
-        __u16 revision; /* revision level */
-        __u16 size;
-        __u32 num_aces;
+        __le16 revision; /* revision level */
+        __le16 size;
+        __le32 num_aces;
 } __attribute__((packed));
 
 struct cifs_ntace { /* first part of ACE which contains perms */
@@ -59,7 +59,7 @@ struct cifs_ace { /* last part of ACE which includes user info */
         __u8 revision; /* revision level */
         __u8 num_subauth;
         __u8 authority[6];
-        __u32 sub_auth[5];
+        __le32 sub_auth[5];
 } __attribute__((packed));
 
 struct cifs_wksid {
@@ -69,7 +69,6 @@ struct cifs_wksid {
 
 #ifdef CONFIG_CIFS_EXPERIMENTAL
 
-extern struct cifs_wksid wksidarr[NUM_WK_SIDS];
 extern int match_sid(struct cifs_sid *);
 extern int compare_sids(struct cifs_sid *, struct cifs_sid *);
 
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 14dabbbd8134..d22af63e8f1f 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -3121,7 +3121,7 @@ CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
 
 /* BB check that data area is minimum length and as big as acl_len */
 
-                acl_len = le32_to_cpu(*(__le32 *)parm);
+                acl_len = le32_to_cpu(*parm);
                 /* BB check if (acl_len > bufsize) */
 
                 parse_sec_desc(psec_desc, acl_len);