From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Tue, 5 Feb 2019 06:27:29 +0000 (+0100)
Subject: network: remove stack allocations
X-Git-Tag: lxc-3.2.0~164^2~11
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=95ea3d1fa0981d02007920dfe13657ac75e787e7;p=thirdparty%2Flxc.git

network: remove stack allocations

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/network.c b/src/lxc/network.c
index ec75b0c28..249d9d471 100644
--- a/src/lxc/network.c
+++ b/src/lxc/network.c
@@ -54,6 +54,7 @@
 #include "file_utils.h"
 #include "log.h"
 #include "macro.h"
+#include "memory_utils.h"
 #include "network.h"
 #include "nl.h"
 #include "raw_syscalls.h"
@@ -549,15 +550,15 @@ out:
 #define PHYSNAME "/sys/class/net/%s/phy80211/name"
 static char *is_wlan(const char *ifname)
 {
+	__do_free char *path;
 	int i, ret;
 	long physlen;
 	size_t len;
-	char *path;
 	FILE *f;
 	char *physname = NULL;
 
 	len = strlen(ifname) + strlen(PHYSNAME) - 1;
-	path = alloca(len + 1);
+	path = must_realloc(NULL, len + 1);
 	ret = snprintf(path, len, PHYSNAME, ifname);
 	if (ret < 0 || (size_t)ret >= len)
 		goto bad;