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authorShehjar Tikoo <shehjart@zresearch.com>2009-04-16 23:58:26 -0700
committerAnand V. Avati <avati@amp.gluster.com>2009-04-17 13:44:23 +0530
commit7cd3cc24c8f3178382074c8a3a319df17b85769d (patch)
tree8c2fe67f04350160bc586bcd554e3b952042f432
parenta6f0446541e917979a697edd06dd28634bf3ec6d (diff)
libglusterfsclient: Add readlink API
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
-rwxr-xr-xlibglusterfsclient/src/libglusterfsclient.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/libglusterfsclient/src/libglusterfsclient.c b/libglusterfsclient/src/libglusterfsclient.c
index 3bbe88945..9dcaadc0e 100755
--- a/libglusterfsclient/src/libglusterfsclient.c
+++ b/libglusterfsclient/src/libglusterfsclient.c
@@ -4668,6 +4668,85 @@ out:
return op_ret;
}
+int32_t
+libgf_client_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno,
+ const char *path)
+{
+ libgf_client_local_t *local = frame->local;
+
+ local->reply_stub = fop_readlink_cbk_stub (frame, NULL, op_ret,
+ op_errno, path);
+
+ LIBGF_REPLY_NOTIFY (local);
+ return 0;
+}
+
+int32_t
+libgf_client_readlink (libglusterfs_client_ctx_t *ctx, loc_t *loc, char *buf,
+ size_t bufsize)
+{
+ int op_ret = -1;
+ libgf_client_local_t *local = NULL;
+ call_stub_t *stub = NULL;
+ size_t cpy_size = 0;
+
+ LIBGF_CLIENT_FOP (ctx, stub, readlink, local, loc, bufsize);
+
+ op_ret = stub->args.readlink_cbk.op_ret;
+ errno = stub->args.readlink_cbk.op_errno;
+
+ if (op_ret != -1) {
+ cpy_size = ((op_ret <= bufsize) ? op_ret : bufsize);
+ memcpy (buf, stub->args.readlink_cbk.buf, cpy_size);
+ op_ret = cpy_size;
+ }
+
+ call_stub_destroy (stub);
+ return op_ret;
+}
+
+ssize_t
+glusterfs_readlink (glusterfs_handle_t handle, const char *path, char *buf,
+ size_t bufsize)
+{
+ int32_t op_ret = -1;
+ loc_t loc = {0, };
+ libglusterfs_client_ctx_t *ctx = handle;
+ char *name = NULL;
+
+ GF_VALIDATE_OR_GOTO (LIBGF_XL_NAME, ctx, out);
+ GF_VALIDATE_ABSOLUTE_PATH_OR_GOTO (LIBGF_XL_NAME, path, out);
+
+ loc.path = strdup (path);
+ op_ret = libgf_client_path_lookup (&loc, ctx, 1);
+ if (op_ret == -1) {
+ gf_log ("libglusterfsclient", GF_LOG_ERROR,
+ "path lookup failed for (%s)", path);
+ goto out;
+ }
+
+ name = strdup (path);
+ op_ret = libgf_client_loc_fill (&loc, ctx, 0, loc.parent->ino,
+ basename (name));
+ if (op_ret == -1) {
+ gf_log ("libglusterfsclient", GF_LOG_ERROR,
+ "libgf_client_loc_fill returned -1, "
+ "returning EINVAL");
+ errno = EINVAL;
+ goto out;
+ }
+
+ op_ret = libgf_client_readlink (ctx, &loc, buf, bufsize);
+
+out:
+ if (name)
+ FREE (name);
+
+ libgf_client_loc_wipe (&loc);
+ return op_ret;
+}
+
static struct xlator_fops libgf_client_fops = {
};