smb3: Fix mode on mkdir on smb311 mounts

mkdir was not passing the mode on smb3.11 mounts with posix extensions

Signed-off-by: Steve French <stfrench@microsoft.com>

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 9dd5f1a..bd78da5 100644 (file)
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -315,6 +315,10 @@ struct smb_version_operations {
        /* send echo request */
        int (*echo)(struct TCP_Server_Info *);
        /* create directory */
+       int (*posix_mkdir)(const unsigned int xid, struct inode *inode,
+                       umode_t mode, struct cifs_tcon *tcon,
+                       const char *full_path,
+                       struct cifs_sb_info *cifs_sb);
        int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *,
                     struct cifs_sb_info *);
        /* set info on created directory */

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index f4697f5..a2cfb33 100644 (file)
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1575,6 +1575,17 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
                goto mkdir_out;
        }
 
+       server = tcon->ses->server;
+
+#ifdef CONFIG_CIFS_SMB311
+       if ((server->ops->posix_mkdir) && (tcon->posix_extensions)) {
+               rc = server->ops->posix_mkdir(xid, inode, mode, tcon, full_path,
+                                             cifs_sb);
+               d_drop(direntry); /* for time being always refresh inode info */
+               goto mkdir_out;
+       }
+#endif /* SMB311 */
+
        if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
                                le64_to_cpu(tcon->fsUnixInfo.Capability))) {
                rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb,
@@ -1583,8 +1594,6 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
                        goto mkdir_out;
        }
 
-       server = tcon->ses->server;
-
        if (!server->ops->mkdir) {
                rc = -ENOSYS;
                goto mkdir_out;

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index b2390e9..badcfb2 100644 (file)
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -3313,6 +3313,7 @@ struct smb_version_operations smb311_operations = {
        .set_compression = smb2_set_compression,
        .mkdir = smb2_mkdir,
        .mkdir_setinfo = smb2_mkdir_setinfo,
+       .posix_mkdir = smb311_posix_mkdir,
        .rmdir = smb2_rmdir,
        .unlink = smb2_unlink,
        .rename = smb2_rename_path,

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 7daf38a..810b857 100644 (file)
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1911,6 +1911,159 @@ alloc_path_with_tree_prefix(__le16 **out_path, int *out_size, int *out_len,
        return 0;
 }
 
+#ifdef CONFIG_CIFS_SMB311
+int smb311_posix_mkdir(const unsigned int xid, struct inode *inode,
+                              umode_t mode, struct cifs_tcon *tcon,
+                              const char *full_path,
+                              struct cifs_sb_info *cifs_sb)
+{
+       struct smb_rqst rqst;
+       struct smb2_create_req *req;
+       struct smb2_create_rsp *rsp;
+       struct TCP_Server_Info *server;
+       struct cifs_ses *ses = tcon->ses;
+       struct kvec iov[3]; /* make sure at least one for each open context */
+       struct kvec rsp_iov = {NULL, 0};
+       int resp_buftype;
+       int uni_path_len;
+       __le16 *copy_path = NULL;
+       int copy_size;
+       int rc = 0;
+       unsigned int n_iov = 2;
+       __u32 file_attributes = 0;
+       char *pc_buf = NULL;
+       int flags = 0;
+       unsigned int total_len;
+       __le16 *path = cifs_convert_path_to_utf16(full_path, cifs_sb);
+
+       if (!path)
+               return -ENOMEM;
+
+       cifs_dbg(FYI, "mkdir\n");
+
+       if (ses && (ses->server))
+               server = ses->server;
+       else
+               return -EIO;
+
+       rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len);
+
+       if (rc)
+               return rc;
+
+       if (smb3_encryption_required(tcon))
+               flags |= CIFS_TRANSFORM_REQ;
+
+
+       req->ImpersonationLevel = IL_IMPERSONATION;
+       req->DesiredAccess = cpu_to_le32(FILE_WRITE_ATTRIBUTES);
+       /* File attributes ignored on open (used in create though) */
+       req->FileAttributes = cpu_to_le32(file_attributes);
+       req->ShareAccess = FILE_SHARE_ALL_LE;
+       req->CreateDisposition = cpu_to_le32(FILE_CREATE);
+       req->CreateOptions = cpu_to_le32(CREATE_NOT_FILE);
+
+       iov[0].iov_base = (char *)req;
+       /* -1 since last byte is buf[0] which is sent below (path) */
+       iov[0].iov_len = total_len - 1;
+
+       req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req));
+
+       /* [MS-SMB2] 2.2.13 NameOffset:
+        * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of
+        * the SMB2 header, the file name includes a prefix that will
+        * be processed during DFS name normalization as specified in
+        * section 3.3.5.9. Otherwise, the file name is relative to
+        * the share that is identified by the TreeId in the SMB2
+        * header.
+        */
+       if (tcon->share_flags & SHI1005_FLAGS_DFS) {
+               int name_len;
+
+               req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS;
+               rc = alloc_path_with_tree_prefix(&copy_path, &copy_size,
+                                                &name_len,
+                                                tcon->treeName, path);
+               if (rc) {
+                       cifs_small_buf_release(req);
+                       return rc;
+               }
+               req->NameLength = cpu_to_le16(name_len * 2);
+               uni_path_len = copy_size;
+               path = copy_path;
+       } else {
+               uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2;
+               /* MUST set path len (NameLength) to 0 opening root of share */
+               req->NameLength = cpu_to_le16(uni_path_len - 2);
+               if (uni_path_len % 8 != 0) {
+                       copy_size = roundup(uni_path_len, 8);
+                       copy_path = kzalloc(copy_size, GFP_KERNEL);
+                       if (!copy_path) {
+                               cifs_small_buf_release(req);
+                               return -ENOMEM;
+                       }
+                       memcpy((char *)copy_path, (const char *)path,
+                              uni_path_len);
+                       uni_path_len = copy_size;
+                       path = copy_path;
+               }
+       }
+
+       iov[1].iov_len = uni_path_len;
+       iov[1].iov_base = path;
+       req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_NONE;
+
+       if (tcon->posix_extensions) {
+               if (n_iov > 2) {
+                       struct create_context *ccontext =
+                           (struct create_context *)iov[n_iov-1].iov_base;
+                       ccontext->Next =
+                               cpu_to_le32(iov[n_iov-1].iov_len);
+               }
+
+               rc = add_posix_context(iov, &n_iov, mode);
+               if (rc) {
+                       cifs_small_buf_release(req);
+                       kfree(copy_path);
+                       return rc;
+               }
+               pc_buf = iov[n_iov-1].iov_base;
+       }
+
+
+       memset(&rqst, 0, sizeof(struct smb_rqst));
+       rqst.rq_iov = iov;
+       rqst.rq_nvec = n_iov;
+
+       rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags,
+                           &rsp_iov);
+
+       cifs_small_buf_release(req);
+       rsp = (struct smb2_create_rsp *)rsp_iov.iov_base;
+
+       if (rc != 0) {
+               cifs_stats_fail_inc(tcon, SMB2_CREATE_HE);
+               trace_smb3_posix_mkdir_err(xid, tcon->tid, ses->Suid,
+                                   CREATE_NOT_FILE, FILE_WRITE_ATTRIBUTES, rc);
+               goto smb311_mkdir_exit;
+       } else
+               trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid,
+                                    ses->Suid, CREATE_NOT_FILE,
+                                    FILE_WRITE_ATTRIBUTES);
+
+       SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId);
+
+       /* Eventually save off posix specific response info and timestaps */
+
+smb311_mkdir_exit:
+       kfree(copy_path);
+       kfree(pc_buf);
+       free_rsp_buf(resp_buftype, rsp);
+       return rc;
+
+}
+#endif /* SMB311 */
+
 int
 SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
          __u8 *oplock, struct smb2_file_all_info *buf,

diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index c840200..78371c1 100644 (file)
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -79,6 +79,10 @@ extern int smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
                              struct cifs_sb_info *cifs_sb, bool set_alloc);
 extern int smb2_set_file_info(struct inode *inode, const char *full_path,
                              FILE_BASIC_INFO *buf, const unsigned int xid);
+extern int smb311_posix_mkdir(const unsigned int xid, struct inode *inode,
+                              umode_t mode, struct cifs_tcon *tcon,
+                              const char *full_path,
+                              struct cifs_sb_info *cifs_sb);
 extern int smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon,
                      const char *name, struct cifs_sb_info *cifs_sb);
 extern void smb2_mkdir_setinfo(struct inode *inode, const char *full_path,

diff --git a/fs/cifs/trace.h b/fs/cifs/trace.h
index 61e74d4..67e413f 100644 (file)
--- a/fs/cifs/trace.h
+++ b/fs/cifs/trace.h
@@ -378,7 +378,7 @@ DEFINE_EVENT(smb3_open_err_class, smb3_##name,    \
        TP_ARGS(xid, tid, sesid, create_options, desired_access, rc))
 
 DEFINE_SMB3_OPEN_ERR_EVENT(open_err);
-
+DEFINE_SMB3_OPEN_ERR_EVENT(posix_mkdir_err);
 
 DECLARE_EVENT_CLASS(smb3_open_done_class,
        TP_PROTO(unsigned int xid,
@@ -420,6 +420,7 @@ DEFINE_EVENT(smb3_open_done_class, smb3_##name,  \
        TP_ARGS(xid, fid, tid, sesid, create_options, desired_access))
 
 DEFINE_SMB3_OPEN_DONE_EVENT(open_done);
+DEFINE_SMB3_OPEN_DONE_EVENT(posix_mkdir_done);
 
 #endif /* _CIFS_TRACE_H */