libglusterfsclient: Add VMP-based link

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

2 files changed, 44 insertions, 1 deletions

diff --git a/libglusterfsclient/src/libglusterfsclient.c b/libglusterfsclient/src/libglusterfsclient.c
index 676fd8a6463..aab93181f68 100755
--- a/libglusterfsclient/src/libglusterfsclient.c
+++ b/libglusterfsclient/src/libglusterfsclient.c
@@ -4399,7 +4399,7 @@ out:
 }
 
 int
-glusterfs_link (glusterfs_handle_t handle, const char *oldpath,
+glusterfs_glh_link (glusterfs_handle_t handle, const char *oldpath,
                         const char *newpath)
 {
         libglusterfs_client_ctx_t       *ctx = handle;
@@ -4458,6 +4458,43 @@ out:
         return op_ret;
 }
 
+int
+glusterfs_link (const char *oldpath, const char *newpath)
+{
+        struct vmp_entry        *oldentry = NULL;
+        struct vmp_entry        *newentry = NULL;
+        char                    *oldvpath = NULL;
+        char                    *newvpath = NULL;
+        int                     op_ret = -1;
+
+        GF_VALIDATE_OR_GOTO (LIBGF_XL_NAME, oldpath, out);
+        GF_VALIDATE_OR_GOTO (LIBGF_XL_NAME, newpath, out);
+
+        oldentry = libgf_vmp_search_entry ((char *)oldpath);
+        if (!oldentry) {
+                errno = ENODEV;
+                goto out;
+        }
+
+        newentry = libgf_vmp_search_entry ((char *)newpath);
+        if (!newentry) {
+                errno =  ENODEV;
+                goto out;
+        }
+
+        /* Cannot hard link across glusterfs mounts. */
+        if (newentry != oldentry) {
+                errno = EXDEV;
+                goto out;
+        }
+
+        newvpath = libgf_vmp_virtual_path (newentry, newpath);
+        oldvpath = libgf_vmp_virtual_path (oldentry, oldpath);
+        op_ret = glusterfs_glh_link (newentry->handle, oldvpath, newvpath);
+out:
+        return op_ret;
+}
+
 int32_t
 libgf_client_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                          int32_t op_ret, int32_t op_errno, struct statvfs *buf)
diff --git a/libglusterfsclient/src/libglusterfsclient.h b/libglusterfsclient/src/libglusterfsclient.h
index 377459c4d61..97ab3bc3470 100755
--- a/libglusterfsclient/src/libglusterfsclient.h
+++ b/libglusterfsclient/src/libglusterfsclient.h
@@ -277,6 +277,12 @@ glusterfs_glh_opendir (glusterfs_handle_t handle, const char *path);
 glusterfs_dir_t
 glusterfs_opendir (const char *path);
 
+int
+glusterfs_glh_link (glusterfs_handle_t handle, const char *oldpath,
+                        const char *newpath);
+
+int
+glusterfs_link (const char *oldpath, const char *newpath);
 /* FIXME: review the need for these apis */
 /* added for log related initialization in booster fork implementation */
 void