From: Yousong Zhou <yszhou4tech@gmail.com>
Date: Mon, 21 Oct 2019 06:10:27 +0000 (+0000)
Subject: exec: properly free memory on rpc_exec() error
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=29c9c11dfa4be5a34ee5f16913abf99e76f228fa;p=oweals%2Frpcd.git

exec: properly free memory on rpc_exec() error

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
[fix whitespace]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit 02c6e1d08c9abfebae050ebeab5766935e849dc2)
---

diff --git a/exec.c b/exec.c
index eb52966..f490ad7 100644
--- a/exec.c
+++ b/exec.c
@@ -313,7 +313,7 @@ rpc_exec(const char **args, rpc_exec_write_cb_t in,
 	switch ((pid = fork()))
 	{
 	case -1:
-		return rpc_errno_status();
+		goto fail_fork;
 
 	case 0:
 		uloop_done();
@@ -372,6 +372,10 @@ rpc_exec(const char **args, rpc_exec_write_cb_t in,
 
 	return UBUS_STATUS_OK;
 
+fail_fork:
+	close(epipe[0]);
+	close(epipe[1]);
+
 fail_epipe:
 	close(opipe[0]);
 	close(opipe[1]);
@@ -381,5 +385,6 @@ fail_opipe:
 	close(ipipe[1]);
 
 fail_ipipe:
+	free(c);
 	return rpc_errno_status();
 }
diff --git a/plugin.c b/plugin.c
index 877345d..bf7c74d 100644
--- a/plugin.c
+++ b/plugin.c
@@ -161,9 +161,12 @@ rpc_plugin_call(struct ubus_context *ctx, struct ubus_object *obj,
 	c->argv[1] = "call";
 	c->argv[2] = c->method;
 
-	return rpc_exec(c->argv, rpc_plugin_call_stdin_cb,
-	                rpc_plugin_call_stdout_cb, rpc_plugin_call_stderr_cb,
-	                rpc_plugin_call_finish_cb, c, ctx, req);
+	rv = rpc_exec(c->argv, rpc_plugin_call_stdin_cb,
+	              rpc_plugin_call_stdout_cb, rpc_plugin_call_stderr_cb,
+	              rpc_plugin_call_finish_cb, c, ctx, req);
+
+	if (rv == UBUS_STATUS_OK)
+		return rv;
 
 fail:
 	if (c)