From 387250cd83d818e8cf1a48cdbd3475dadcfc92c0 Mon Sep 17 00:00:00 2001
From: Jose Pedro Oliveira <jpo@di.uminho.pt>
Date: Thu, 19 Sep 2013 15:25:22 +0100
Subject: [PATCH 1/6] Fixes compiler warning: implicit declaration of function
 'isalnum'

---
 mnexec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mnexec.c b/mnexec.c
index a563499..3171bab 100644
--- a/mnexec.c
+++ b/mnexec.c
@@ -22,6 +22,7 @@
 #include <stdlib.h>
 #include <limits.h>
 #include <sched.h>
+#include <ctype.h>
 
 #if !defined(VERSION)
 #define VERSION "(devel)"

From b8fd3d2d8e479604b0f1bfd932331e203d853472 Mon Sep 17 00:00:00 2001
From: Jose Pedro Oliveira <jpo@di.uminho.pt>
Date: Thu, 19 Sep 2013 15:26:26 +0100
Subject: [PATCH 2/6] Fixes compiler warning: control reaches end of non-void
 function

---
 mnexec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mnexec.c b/mnexec.c
index 3171bab..3d24743 100644
--- a/mnexec.c
+++ b/mnexec.c
@@ -177,4 +177,6 @@ int main(int argc, char *argv[])
     }
     
     usage(argv[0]);
+
+    return 0;
 }

From f5737aa3cc72713a4b3028a12a6be67d051917bb Mon Sep 17 00:00:00 2001
From: Jose Pedro Oliveira <jpo@di.uminho.pt>
Date: Sat, 28 Sep 2013 01:34:01 +0100
Subject: [PATCH 3/6] The header file limits.h was being included twice

---
 mnexec.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mnexec.c b/mnexec.c
index 3d24743..c30b4a6 100644
--- a/mnexec.c
+++ b/mnexec.c
@@ -20,7 +20,6 @@
 #include <syscall.h>
 #include <fcntl.h>
 #include <stdlib.h>
-#include <limits.h>
 #include <sched.h>
 #include <ctype.h>
 

From 8842e450dba6fb874502f4632b4ea1f893e89da0 Mon Sep 17 00:00:00 2001
From: Jose Pedro Oliveira <jpo@di.uminho.pt>
Date: Sat, 28 Sep 2013 01:36:02 +0100
Subject: [PATCH 4/6] Turns on gcc warnings (CFLAGS += -Wall -Wextra)

---
 Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Makefile b/Makefile
index c989e61..74da5ac 100644
--- a/Makefile
+++ b/Makefile
@@ -12,6 +12,8 @@ MANDIR = /usr/share/man/man1
 DOCDIRS = doc/html doc/latex
 PDF = doc/latex/refman.pdf
 
+CFLAGS += -Wall -Wextra
+
 all: codecheck test
 
 clean:

From 2941bbae2d023518edaf8eab443c2bbcec755d56 Mon Sep 17 00:00:00 2001
From: Jose Pedro Oliveira <jpo@di.uminho.pt>
Date: Sat, 28 Sep 2013 01:37:51 +0100
Subject: [PATCH 5/6] Defines _GNU_SOURCE (required by the unshare syscall)

---
 mnexec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mnexec.c b/mnexec.c
index c30b4a6..ea8fb6f 100644
--- a/mnexec.c
+++ b/mnexec.c
@@ -13,6 +13,7 @@
  * Partially based on public domain setsid(1)
 */
 
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <linux/sched.h>
 #include <unistd.h>

From 8f80f875b5713bd0077251676c4813b4cf68d51d Mon Sep 17 00:00:00 2001
From: Jose Pedro Oliveira <jpo@di.uminho.pt>
Date: Sat, 28 Sep 2013 01:42:05 +0100
Subject: [PATCH 6/6] Change cgroup() return type from int to void (avoids a
 gcc warning)

---
 mnexec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mnexec.c b/mnexec.c
index ea8fb6f..b7be9bc 100644
--- a/mnexec.c
+++ b/mnexec.c
@@ -63,7 +63,7 @@ void validate(char *path)
 }
 
 /* Add our pid to cgroup */
-int cgroup(char *gname)
+void cgroup(char *gname)
 {
     static char path[PATH_MAX];
     static char *groups[] = {