cifs: Re-order M-F Symlink code

This patch makes cosmetic changes. We group similar functions together
and separate out the protocol specific functions.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>

diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 3f259aa..5988b60 100644 (file)
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -29,6 +29,10 @@
 #include "cifs_debug.h"
 #include "cifs_fs_sb.h"
 
+/*
+ * M-F Symlink Functions - Begin
+ */
+
 #define CIFS_MF_SYMLINK_LEN_OFFSET (4+1)
 #define CIFS_MF_SYMLINK_MD5_OFFSET (CIFS_MF_SYMLINK_LEN_OFFSET+(4+1))
 #define CIFS_MF_SYMLINK_LINK_OFFSET (CIFS_MF_SYMLINK_MD5_OFFSET+(32+1))
@@ -178,6 +182,20 @@ format_mf_symlink(u8 *buf, unsigned int buf_len, const char *link_str)
        return 0;
 }
 
+bool
+couldbe_mf_symlink(const struct cifs_fattr *fattr)
+{
+       if (!(fattr->cf_mode & S_IFREG))
+               /* it's not a symlink */
+               return false;
+
+       if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
+               /* it's not a symlink */
+               return false;
+
+       return true;
+}
+
 static int
 create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
                  struct cifs_sb_info *cifs_sb, const char *fromName,
@@ -241,20 +259,60 @@ out:
        return rc;
 }
 
-bool
-couldbe_mf_symlink(const struct cifs_fattr *fattr)
+int
+check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+                struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
+                const unsigned char *path)
 {
-       if (!(fattr->cf_mode & S_IFREG))
+       int rc;
+       u8 *buf = NULL;
+       unsigned int link_len = 0;
+       unsigned int bytes_read = 0;
+
+       if (!couldbe_mf_symlink(fattr))
                /* it's not a symlink */
-               return false;
+               return 0;
 
-       if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
+       buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
+       if (!buf)
+               return -ENOMEM;
+
+       if (tcon->ses->server->ops->query_mf_symlink)
+               rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
+                                             cifs_sb, path, buf, &bytes_read);
+       else
+               rc = -ENOSYS;
+
+       if (rc)
+               goto out;
+
+       if (bytes_read == 0) /* not a symlink */
+               goto out;
+
+       rc = parse_mf_symlink(buf, bytes_read, &link_len, NULL);
+       if (rc == -EINVAL) {
                /* it's not a symlink */
-               return false;
+               rc = 0;
+               goto out;
+       }
 
-       return true;
+       if (rc != 0)
+               goto out;
+
+       /* it is a symlink */
+       fattr->cf_eof = link_len;
+       fattr->cf_mode &= ~S_IFMT;
+       fattr->cf_mode |= S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO;
+       fattr->cf_dtype = DT_LNK;
+out:
+       kfree(buf);
+       return rc;
 }
 
+/*
+ * SMB 1.0 Protocol specific functions
+ */
+
 int
 cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
                      struct cifs_sb_info *cifs_sb, const unsigned char *path,
@@ -324,55 +382,9 @@ cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
        return rc;
 }
 
-int
-check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
-                struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
-                const unsigned char *path)
-{
-       int rc;
-       u8 *buf = NULL;
-       unsigned int link_len = 0;
-       unsigned int bytes_read = 0;
-
-       if (!couldbe_mf_symlink(fattr))
-               /* it's not a symlink */
-               return 0;
-
-       buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
-       if (!buf)
-               return -ENOMEM;
-
-       if (tcon->ses->server->ops->query_mf_symlink)
-               rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
-                                             cifs_sb, path, buf, &bytes_read);
-       else
-               rc = -ENOSYS;
-
-       if (rc)
-               goto out;
-
-       if (bytes_read == 0) /* not a symlink */
-               goto out;
-
-       rc = parse_mf_symlink(buf, bytes_read, &link_len, NULL);
-       if (rc == -EINVAL) {
-               /* it's not a symlink */
-               rc = 0;
-               goto out;
-       }
-
-       if (rc != 0)
-               goto out;
-
-       /* it is a symlink */
-       fattr->cf_eof = link_len;
-       fattr->cf_mode &= ~S_IFMT;
-       fattr->cf_mode |= S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO;
-       fattr->cf_dtype = DT_LNK;
-out:
-       kfree(buf);
-       return rc;
-}
+/*
+ * M-F Symlink Functions - End
+ */
 
 int
 cifs_hardlink(struct dentry *old_file, struct inode *inode,