mirror of https://gitee.com/openkylin/linux.git
[CIFS] acl support part 6
CC: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
parent
c94897790e
commit
44093ca2fe
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@ -38,8 +38,8 @@ static struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
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{{1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(18), 0, 0, 0, 0} }, "sys"},
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{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(544), 0, 0, 0} }, "root"},
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{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(545), 0, 0, 0} }, "users"},
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{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(546), 0, 0, 0} }, "guest"}
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};
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{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(546), 0, 0, 0} }, "guest"} }
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;
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/* security id for everyone */
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@ -131,6 +131,8 @@ int compare_sids(struct cifs_sid *ctsid, struct cifs_sid *cwsid)
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void get_mode_from_acl(struct inode * inode, const char * path)
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{
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cFYI(1, ("get mode from ACL for %s", path));
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if (inode == NULL)
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return;
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@ -159,50 +161,36 @@ static void parse_ace(struct cifs_ace *pace, char *end_of_acl)
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/* validate that we do not go past end of acl */
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/* XXX this if statement can be removed
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if (end_of_acl < (char *)pace + sizeof(struct cifs_ace)) {
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if (le16_to_cpu(pace->size) < 16) {
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cERROR(1, ("ACE too small, %d", le16_to_cpu(pace->size)));
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return;
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}
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if (end_of_acl < (char *)pace + le16_to_cpu(pace->size)) {
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cERROR(1, ("ACL too small to parse ACE"));
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return;
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} */
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}
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num_subauth = pace->num_subauth;
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num_subauth = pace->sid.num_subauth;
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if (num_subauth) {
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#ifdef CONFIG_CIFS_DEBUG2
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int i;
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cFYI(1, ("ACE revision %d num_subauth %d",
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pace->revision, pace->num_subauth));
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cFYI(1, ("ACE revision %d num_auth %d type %d flags %d size %d",
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pace->sid.revision, pace->sid.num_subauth, pace->type,
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pace->flags, pace->size));
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for (i = 0; i < num_subauth; ++i) {
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cFYI(1, ("ACE sub_auth[%d]: 0x%x", i,
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le32_to_cpu(pace->sub_auth[i])));
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le32_to_cpu(pace->sid.sub_auth[i])));
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}
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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 %d", le32_to_cpu(pace->sub_auth[num_subauth-1])));
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#endif
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}
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return;
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}
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static void parse_ntace(struct cifs_ntace *pntace, char *end_of_acl)
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{
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/* validate that we do not go past end of acl */
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if (end_of_acl < (char *)pntace + sizeof(struct cifs_ntace)) {
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cERROR(1, ("ACL too small to parse NT ACE"));
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return;
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}
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#ifdef CONFIG_CIFS_DEBUG2
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cFYI(1, ("NTACE type %d flags 0x%x size %d, access Req 0x%x",
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pntace->type, pntace->flags, pntace->size,
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pntace->access_req));
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#endif
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return;
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}
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static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
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struct cifs_sid *pownersid, struct cifs_sid *pgrpsid)
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@ -211,7 +199,6 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
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int num_aces = 0;
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int acl_size;
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char *acl_base;
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struct cifs_ntace **ppntace;
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struct cifs_ace **ppace;
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/* BB need to add parm so we can store the SID BB */
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@ -233,45 +220,27 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
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num_aces = le32_to_cpu(pdacl->num_aces);
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if (num_aces > 0) {
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ppntace = kmalloc(num_aces * sizeof(struct cifs_ntace *),
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GFP_KERNEL);
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ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
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GFP_KERNEL);
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/* cifscred->cecount = pdacl->num_aces;
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cifscred->ntaces = kmalloc(num_aces *
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sizeof(struct cifs_ntace *), GFP_KERNEL);
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cifscred->aces = kmalloc(num_aces *
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sizeof(struct cifs_ace *), GFP_KERNEL);*/
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for (i = 0; i < num_aces; ++i) {
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ppntace[i] = (struct cifs_ntace *)
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(acl_base + acl_size);
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ppace[i] = (struct cifs_ace *) ((char *)ppntace[i] +
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sizeof(struct cifs_ntace));
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ppace[i] = (struct cifs_ace *) (acl_base + acl_size);
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parse_ntace(ppntace[i], end_of_acl);
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if (end_of_acl < ((char *)ppace[i] +
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(le16_to_cpu(ppntace[i]->size) -
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sizeof(struct cifs_ntace)))) {
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cERROR(1, ("ACL too small to parse ACE"));
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break;
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} else
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parse_ace(ppace[i], end_of_acl);
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parse_ace(ppace[i], end_of_acl);
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/* memcpy((void *)(&(cifscred->ntaces[i])),
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(void *)ppntace[i],
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sizeof(struct cifs_ntace));
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memcpy((void *)(&(cifscred->aces[i])),
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/* memcpy((void *)(&(cifscred->aces[i])),
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(void *)ppace[i],
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sizeof(struct cifs_ace)); */
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acl_base = (char *)ppntace[i];
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acl_size = le16_to_cpu(ppntace[i]->size);
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acl_base = (char *)ppace[i];
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acl_size = le16_to_cpu(ppace[i]->size);
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}
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kfree(ppace);
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kfree(ppntace);
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}
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return;
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@ -292,8 +261,8 @@ static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
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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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cFYI(1, ("SID revision %d num_auth %d",
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psid->revision, psid->num_subauth));
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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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@ -48,7 +48,7 @@ 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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__le32 sub_auth[5]; /* sub_auth[num_subauth] */ /* BB FIXME endianness BB */
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__le32 sub_auth[5]; /* sub_auth[num_subauth] */
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} __attribute__((packed));
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struct cifs_acl {
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@ -57,18 +57,12 @@ struct cifs_acl {
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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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struct cifs_ace {
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__u8 type;
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__u8 flags;
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__le16 size;
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__le32 access_req;
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} __attribute__((packed));
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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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__le32 sub_auth[5];
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struct cifs_sid sid; /* ie UUID of user or group who gets these perms */
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} __attribute__((packed));
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struct cifs_wksid {
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@ -593,7 +593,7 @@ static int cifs_ci_compare(struct dentry *dentry, struct qstr *a,
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* case take precedence. If a is not a negative dentry, this
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* should have no side effects
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*/
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memcpy((unsigned char *)a->name, b->name, a->len);
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memcpy(a->name, b->name, a->len);
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return 0;
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}
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return 1;
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