cr-service: setup_opts_from_req: use single error exit point

Signed-off-by: Ruslan Kuprieiev <kupruser@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-service.c

@@ -186,15 +186,15 @@ static int setup_opts_from_req(int sk, CriuOpts *req)
 
 	if (getsockopt(sk, SOL_SOCKET, SO_PEERCRED, &ids, &ids_len)) {
 		pr_perror("Can't get socket options");
-		return -1;
+		goto err;
 	}
 
 	if (restrict_uid(ids.uid, ids.gid))
-		return -1;
+		goto err;
 
 	if (fstat(sk, &st)) {
 		pr_perror("Can't get socket stat");
-		return -1;
+		goto err;
 	}
 
 	BUG_ON(st.st_ino == -1);
@@ -208,13 +208,13 @@ static int setup_opts_from_req(int sk, CriuOpts *req)
 
 	if (open_image_dir(images_dir_path) < 0) {
 		pr_perror("Can't open images directory");
-		return -1;
+		goto err;
 	}
 
 	/* get full path to images_dir to use in process title */
 	if (readlink(images_dir_path, images_dir, PATH_MAX) == -1) {
 		pr_perror("Can't readlink %s", images_dir_path);
-		return -1;
+		goto err;
 	}
 
 	/* chdir to work dir */
@@ -225,14 +225,14 @@ static int setup_opts_from_req(int sk, CriuOpts *req)
 
 	if (chdir(work_dir_path)) {
 		pr_perror("Can't chdir to work_dir");
-		return -1;
+		goto err;
 	}
 
 	/* initiate log file in work dir */
 	if (req->log_file) {
 		if (strchr(req->log_file, '/')) {
 			pr_perror("No subdirs are allowed in log_file name");
-			return -1;
+			goto err;
 		}
 
 		opts.output = req->log_file;
@@ -242,7 +242,7 @@ static int setup_opts_from_req(int sk, CriuOpts *req)
 	log_set_loglevel(req->log_level);
 	if (log_init(opts.output) == -1) {
 		pr_perror("Can't initiate log");
-		return -1;
+		goto err;
 	}
 
 	/* checking flags from client */
@@ -263,7 +263,7 @@ static int setup_opts_from_req(int sk, CriuOpts *req)
 	if (req->has_rst_sibling) {
 		if (!opts.swrk_restore) {
 			pr_err("rst_sibling is not allowed in standalone service\n");
-			return -1;
+			goto err;
 		}
 
 		opts.restore_sibling = req->rst_sibling;
@@ -306,7 +306,7 @@ static int setup_opts_from_req(int sk, CriuOpts *req)
 
 		if (req->ps->has_fd) {
 			if (!opts.swrk_restore)
-				return -1;
+				goto err;
 
 			opts.ps_socket = req->ps->fd;
 		}
@@ -314,22 +314,22 @@ static int setup_opts_from_req(int sk, CriuOpts *req)
 
 	if (req->notify_scripts &&
 			add_script(SCRIPT_RPC_NOTIFY, sk))
-		return -1;
+		goto err;
 
 	for (i = 0; i < req->n_veths; i++) {
 		if (veth_pair_add(req->veths[i]->if_in, req->veths[i]->if_out))
-			return -1;
+			goto err;
 	}
 
 	for (i = 0; i < req->n_ext_mnt; i++) {
 		if (ext_mount_add(req->ext_mnt[i]->key, req->ext_mnt[i]->val))
-			return -1;
+			goto err;
 	}
 
 	for (i = 0; i < req->n_cg_root; i++) {
 		if (new_cg_root_add(req->cg_root[i]->ctrl,
 					req->cg_root[i]->path))
-			return -1;
+			goto err;
 	}
 
 	if (req->has_cpu_cap)
@@ -339,6 +339,9 @@ static int setup_opts_from_req(int sk, CriuOpts *req)
 		opts.manage_cgroups = req->manage_cgroups;
 
 	return 0;
+
+err:
+	return -1;
 }
 
 static int dump_using_req(int sk, CriuOpts *req)