libglusterfsclient: Add VMP-based readlink

Signed-off-by: Anand V. Avati <avati@amp.gluster.com>

2 files changed, 34 insertions, 4 deletions

diff --git a/libglusterfsclient/src/libglusterfsclient.c b/libglusterfsclient/src/libglusterfsclient.c
index 707a4f72dd9..f8fa1492e63 100755
--- a/libglusterfsclient/src/libglusterfsclient.c
+++ b/libglusterfsclient/src/libglusterfsclient.c
@@ -5417,8 +5417,8 @@ libgf_client_readlink (libglusterfs_client_ctx_t *ctx, loc_t *loc, char *buf,
 }
 
 ssize_t
-glusterfs_readlink (glusterfs_handle_t handle, const char *path, char *buf,
-                    size_t bufsize)
+glusterfs_glh_readlink (glusterfs_handle_t handle, const char *path, char *buf,
+                                size_t bufsize)
 {
         int32_t                         op_ret = -1;
         loc_t                           loc = {0, };
@@ -5457,6 +5457,28 @@ out:
         return op_ret;
 }
 
+ssize_t
+glusterfs_readlink (const char *path, char *buf, size_t bufsize)
+{
+        struct vmp_entry        *entry = NULL;
+        char                    *vpath = NULL;
+        int                     op_ret = -1;
+
+        GF_VALIDATE_OR_GOTO (LIBGF_XL_NAME, path, out);
+        GF_VALIDATE_OR_GOTO (LIBGF_XL_NAME, buf, out);
+
+        entry = libgf_vmp_search_entry ((char *)path);
+        if (!entry) {
+                errno = ENODEV;
+                goto out;
+        }
+
+        vpath = libgf_vmp_virtual_path (entry, path);
+        op_ret = glusterfs_glh_readlink (entry->handle, vpath, buf, bufsize);
+out:
+        return op_ret;
+}
+
 char *
 glusterfs_realpath (glusterfs_handle_t handle, const char *path,
                     char *resolved_path)
@@ -5590,8 +5612,9 @@ glusterfs_realpath (glusterfs_handle_t handle, const char *path,
                                         goto err;
                                 }
 
-                                ret = glusterfs_readlink (handle, rpath, buf,
-                                                          path_max - 1);
+                                ret = glusterfs_glh_readlink (handle, rpath,
+                                                                buf,
+                                                                path_max - 1);
                                 if (ret < 0) {
                                         gf_log ("libglusterfsclient",
                                                 GF_LOG_ERROR,
diff --git a/libglusterfsclient/src/libglusterfsclient.h b/libglusterfsclient/src/libglusterfsclient.h
index 3a92461fead..e4187d82afc 100755
--- a/libglusterfsclient/src/libglusterfsclient.h
+++ b/libglusterfsclient/src/libglusterfsclient.h
@@ -338,6 +338,13 @@ glusterfs_glh_symlink (glusterfs_handle_t handle, const char *oldpath,
 
 int
 glusterfs_symlink (const char *oldpath, const char *newpath);
+
+ssize_t
+glusterfs_glh_readlink (glusterfs_handle_t handle, const char *path, char *buf,
+                                size_t bufsize);
+
+ssize_t
+glusterfs_readlink (const char *path, char *buf, size_t bufsize);
 /* FIXME: review the need for these apis */
 /* added for log related initialization in booster fork implementation */
 void