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[CIFS] Fix some endianness problems in new acl code
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
parent
016ec75f1a
commit
af6f4612fd
3 changed files with 26 additions and 27 deletions
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@ -31,7 +31,7 @@
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#ifdef CONFIG_CIFS_EXPERIMENTAL
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struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
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static struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
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{{1, 0, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0} }, "null user"},
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{{1, 1, {0, 0, 0, 0, 0, 1}, {0, 0, 0, 0, 0} }, "nobody"},
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{{1, 1, {0, 0, 0, 0, 0, 5}, {11, 0, 0, 0, 0} }, "net-users"},
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@ -192,14 +192,15 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl)
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/* BB need to add parm so we can store the SID BB */
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/* validate that we do not go past end of acl */
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if (end_of_acl < (char *)pdacl + pdacl->size) {
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if (end_of_acl < (char *)pdacl + le16_to_cpu(pdacl->size)) {
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cERROR(1, ("ACL too small to parse DACL"));
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return;
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}
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#ifdef CONFIG_CIFS_DEBUG2
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cFYI(1, ("DACL revision %d size %d num aces %d",
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pdacl->revision, pdacl->size, pdacl->num_aces));
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le16_to_cpu(pdacl->revision), le16_to_cpu(pdacl->size),
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le32_to_cpu(pdacl->num_aces)));
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#endif
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acl_base = (char *)pdacl;
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@ -255,7 +256,6 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl)
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static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
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{
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int num_subauth;
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/* BB need to add parm so we can store the SID BB */
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@ -265,14 +265,13 @@ static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
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return -EINVAL;
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}
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num_subauth = cpu_to_le32(psid->num_subauth);
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if (num_subauth) {
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if (psid->num_subauth) {
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#ifdef CONFIG_CIFS_DEBUG2
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int i;
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cFYI(1, ("SID revision %d num_auth %d First subauth 0x%x",
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psid->revision, psid->num_subauth, psid->sub_auth[0]));
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for (i = 0; i < num_subauth; ++i) {
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for (i = 0; i < psid->num_subauth; i++) {
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cFYI(1, ("SID sub_auth[%d]: 0x%x ", i,
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le32_to_cpu(psid->sub_auth[i])));
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}
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@ -280,7 +279,7 @@ static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
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/* BB add length check to make sure that we do not have huge
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num auths and therefore go off the end */
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cFYI(1, ("RID 0x%x",
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le32_to_cpu(psid->sub_auth[num_subauth-1])));
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le32_to_cpu(psid->sub_auth[psid->num_subauth-1])));
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#endif
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}
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@ -297,17 +296,18 @@ int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len)
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char *end_of_acl = ((char *)pntsd) + acl_len;
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owner_sid_ptr = (struct cifs_sid *)((char *)pntsd +
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cpu_to_le32(pntsd->osidoffset));
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le32_to_cpu(pntsd->osidoffset));
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group_sid_ptr = (struct cifs_sid *)((char *)pntsd +
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cpu_to_le32(pntsd->gsidoffset));
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le32_to_cpu(pntsd->gsidoffset));
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dacl_ptr = (struct cifs_acl *)((char *)pntsd +
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cpu_to_le32(pntsd->dacloffset));
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le32_to_cpu(pntsd->dacloffset));
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#ifdef CONFIG_CIFS_DEBUG2
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cFYI(1, ("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
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"sacloffset 0x%x dacloffset 0x%x",
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pntsd->revision, pntsd->type,
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pntsd->osidoffset, pntsd->gsidoffset, pntsd->sacloffset,
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pntsd->dacloffset));
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pntsd->revision, pntsd->type, le32_to_cpu(pntsd->osidoffset),
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le32_to_cpu(pntsd->gsidoffset),
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le32_to_cpu(pntsd->sacloffset),
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le32_to_cpu(pntsd->dacloffset));
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#endif
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rc = parse_sid(owner_sid_ptr, end_of_acl);
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if (rc)
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@ -27,25 +27,25 @@
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#define SIDNAMELENGTH 20 /* long enough for the ones we care about */
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struct cifs_ntsd {
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__u16 revision; /* revision level */
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__u16 type;
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__u32 osidoffset;
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__u32 gsidoffset;
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__u32 sacloffset;
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__u32 dacloffset;
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__le16 revision; /* revision level */
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__le16 type;
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__le32 osidoffset;
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__le32 gsidoffset;
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__le32 sacloffset;
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__le32 dacloffset;
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} __attribute__((packed));
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struct cifs_sid {
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__u8 revision; /* revision level */
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__u8 num_subauth;
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__u8 authority[6];
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__u32 sub_auth[5]; /* sub_auth[num_subauth] */
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__le32 sub_auth[5]; /* sub_auth[num_subauth] */ /* BB FIXME endianness BB */
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} __attribute__((packed));
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struct cifs_acl {
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__u16 revision; /* revision level */
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__u16 size;
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__u32 num_aces;
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__le16 revision; /* revision level */
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__le16 size;
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__le32 num_aces;
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} __attribute__((packed));
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struct cifs_ntace { /* first part of ACE which contains perms */
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@ -59,7 +59,7 @@ struct cifs_ace { /* last part of ACE which includes user info */
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__u8 revision; /* revision level */
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__u8 num_subauth;
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__u8 authority[6];
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__u32 sub_auth[5];
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__le32 sub_auth[5];
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} __attribute__((packed));
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struct cifs_wksid {
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@ -69,7 +69,6 @@ struct cifs_wksid {
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#ifdef CONFIG_CIFS_EXPERIMENTAL
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extern struct cifs_wksid wksidarr[NUM_WK_SIDS];
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extern int match_sid(struct cifs_sid *);
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extern int compare_sids(struct cifs_sid *, struct cifs_sid *);
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@ -3121,7 +3121,7 @@ CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
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/* BB check that data area is minimum length and as big as acl_len */
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acl_len = le32_to_cpu(*(__le32 *)parm);
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acl_len = le32_to_cpu(*parm);
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/* BB check if (acl_len > bufsize) */
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parse_sec_desc(psec_desc, acl_len);
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