From 4e22add64497a1edef18854efc52ca0b682c0bcb Mon Sep 17 00:00:00 2001
From: netblue30 <netblue30@yahoo.com>
Date: Sun, 29 Nov 2015 13:02:48 -0500
Subject: llvm scan

---
 Makefile.in                 | 6 ++++++
 src/firejail/fs_logger.c    | 1 +
 src/firejail/fs_whitelist.c | 4 +++-
 src/firejail/network.c      | 4 ++--
 src/libtrace/libtrace.c     | 4 ++--
 todo                        | 2 +-
 6 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 083a88538..c14ec5cdc 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -184,3 +184,9 @@ deb: dist
 extras: all
 	$(MAKE) -C extras/firetools
 	
+cppcheck: clean
+	cppcheck --force .
+
+scan-build: clean
+	scan-build make
+
diff --git a/src/firejail/fs_logger.c b/src/firejail/fs_logger.c
index f735b1489..9f742c5bd 100644
--- a/src/firejail/fs_logger.c
+++ b/src/firejail/fs_logger.c
@@ -90,6 +90,7 @@ void fs_logger_print(void) {
 	}
 	
 	int rv = chown(RUN_FSLOGGER_FILE, getuid(), getgid());
+	(void) rv; // best effort!
 	rv = chmod(RUN_FSLOGGER_FILE, 0600);
 	(void) rv; // best effort!
 	
diff --git a/src/firejail/fs_whitelist.c b/src/firejail/fs_whitelist.c
index e0187981b..a584cb69d 100644
--- a/src/firejail/fs_whitelist.c
+++ b/src/firejail/fs_whitelist.c
@@ -390,8 +390,10 @@ void fs_whitelist(void) {
 		// mark symbolic links
 		if (is_link(new_name))
 			entry->link = new_name;
-		else
+		else {
 			free(new_name);
+			new_name = NULL;
+		}
 
 		// change file name in entry->data
 		if (strcmp(fname, entry->data + 10) != 0) {
diff --git a/src/firejail/network.c b/src/firejail/network.c
index 461946d83..5f7a84a1e 100644
--- a/src/firejail/network.c
+++ b/src/firejail/network.c
@@ -138,8 +138,8 @@ void net_set_mtu(const char *ifname, int mtu) {
 	ifr.ifr_addr.sa_family = AF_INET;
 	strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
 	ifr.ifr_mtu = mtu;
-	if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) == 0)
-		mtu = ifr.ifr_mtu;
+	if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) != 0)
+		fprintf(stderr, "Warning: cannot set mtu for interface %s\n", ifname);
 	close(s);
 }
 
diff --git a/src/libtrace/libtrace.c b/src/libtrace/libtrace.c
index b763213f6..44f0cc4d0 100644
--- a/src/libtrace/libtrace.c
+++ b/src/libtrace/libtrace.c
@@ -490,9 +490,9 @@ int socket(int domain, int type, int protocol) {
 
 	str = translate(socket_protocol, protocol);
 	if (str == NULL)
-		ptr += sprintf(ptr, "%d", protocol);
+		sprintf(ptr, "%d", protocol);
 	else
-		ptr += sprintf(ptr, "%s", str);
+		sprintf(ptr, "%s", str);
 
 	printf("%s\n", buf);
 	return rv;
diff --git a/todo b/todo
index 0c7738395..863a34fe4 100644
--- a/todo
+++ b/todo
@@ -154,4 +154,4 @@ I was messing around with my fstab, and found out that firejail can't have /usr/
 /dev/mapper/asdf-usr--local /usr/local ext4 defaults,nosuid,noatime,ro 0 2
 /dev/mapper/asdf-usr--sbin /usr/sbin ext4 defaults,nosuid,,noatime,ro 0 2
 /dev/mapper/asdf-var /var ext4 discard,noatime,nodev,nosuid 0 2
-tmpfs /tmp tmpfs noatime,nosuid,nodev,size=2G 0 1
\ No newline at end of file
+tmpfs /tmp tmpfs noatime,nosuid,nodev,size=2G 0 1
-- 
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