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-rw-r--r--fs/cifs/dir.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index d3671f2acb29..3b7e0c1266f7 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -44,6 +44,37 @@ renew_parental_timestamps(struct dentry *direntry)
} while (!IS_ROOT(direntry));
}
+char *
+cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
+ struct cifs_tcon *tcon)
+{
+ int pplen = vol->prepath ? strlen(vol->prepath) : 0;
+ int dfsplen;
+ char *full_path = NULL;
+
+ /* if no prefix path, simply set path to the root of share to "" */
+ if (pplen == 0) {
+ full_path = kzalloc(1, GFP_KERNEL);
+ return full_path;
+ }
+
+ if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
+ dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
+ else
+ dfsplen = 0;
+
+ full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
+ if (full_path == NULL)
+ return full_path;
+
+ if (dfsplen)
+ strncpy(full_path, tcon->treeName, dfsplen);
+ strncpy(full_path + dfsplen, vol->prepath, pplen);
+ convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));
+ full_path[dfsplen + pplen] = 0; /* add trailing null */
+ return full_path;
+}
+
/* Note: caller must free return buffer */
char *
build_path_from_dentry(struct dentry *direntry)