Merge pull request #190 from jpoimboe/test-special-sections

add tests for special sections

test/integration/Makefile

@@ -1,2 +1,11 @@
+all:
+	./kpatch-test
+
+# Just reuse any already-built modules for the tests.  This isn't a
+# reliable way to run tests if the code has changed, but it comes in
+# handy when creating new tests.
+quick:
+	./kpatch-test -s
+
 clean:
 	rm -f *.ko *.log

test/integration/bug-table-section.patch

@@ -0,0 +1,12 @@
+Index: src/fs/proc/proc_sysctl.c
+===================================================================
+--- src.orig/fs/proc/proc_sysctl.c
++++ src/fs/proc/proc_sysctl.c
+@@ -266,6 +266,7 @@ void sysctl_head_put(struct ctl_table_he
+ 
+ static struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *head)
+ {
++	printk("kpatch-test: testing __bug_table section changes\n");
+ 	BUG_ON(!head);
+ 	spin_lock(&sysctl_lock);
+ 	if (!use_table(head))

test/integration/kpatch-test

@@ -125,21 +125,26 @@ run_load_test() {
 	module=kpatch-$prefix.ko
 	testprog=$prefix-LOADED.test
 
-	[[ ! -e $testprog ]] && return
+	[[ $prefix = *-FAIL ]] && return
-
-	log "load test: $prefix"
 
 	if [[ ! -e $module ]]; then
-		error "$prefix: can't find $module"
+		log "can't find $module, skipping"
 		return
 	fi
 
+	if [[ -e $testprog ]]; then
+		log "load test: $prefix"
+	else
+		log "load test: $prefix (no test prog)"
+	fi
+
+
 	if ! $KPATCH replace $module >> $LOG 2>&1; then
 		error "$prefix: kpatch replace failed"
 		return
 	fi
 
-	if ! ./$testprog >> $LOG 2>&1; then
+	if [[ -e $testprog ]] && ! ./$testprog >> $LOG 2>&1; then
 		error "$prefix: $testprog failed after kpatch replace"
 		return
 	fi
@@ -149,7 +154,7 @@ run_load_test() {
 		return
 	fi
 
-	if ./$testprog >> $LOG 2>&1; then
+	if [[ -e $testprog ]] && ./$testprog >> $LOG 2>&1; then
 		error "$prefix: $testprog succeeded after kpatch unload"
 		return
 	fi
@@ -159,7 +164,7 @@ run_load_test() {
 		return
 	fi
 
-	if ! ./$testprog >> $LOG 2>&1; then
+	if [[ -e $testprog ]] && ! ./$testprog >> $LOG 2>&1; then
 		error "$prefix: $testprog failed after kpatch load"
 		return
 	fi

test/integration/parainstructions-section.patch

@@ -0,0 +1,12 @@
+Index: src/fs/proc/generic.c
+===================================================================
+--- src.orig/fs/proc/generic.c
++++ src/fs/proc/generic.c
+@@ -132,6 +132,7 @@ int proc_alloc_inum(unsigned int *inum)
+ 	unsigned int i;
+ 	int error;
+ 
++	printk("kpatch-test: testing change to .parainstructions section\n");
+ retry:
+ 	if (!ida_pre_get(&proc_inum_ida, GFP_KERNEL))
+ 		return -ENOMEM;

test/integration/smp-locks-section.patch

@@ -0,0 +1,12 @@
+Index: src/drivers/tty/tty_buffer.c
+===================================================================
+--- src.orig/drivers/tty/tty_buffer.c
++++ src/drivers/tty/tty_buffer.c
+@@ -245,6 +245,7 @@ static int __tty_buffer_request_room(str
+ 	struct tty_buffer *b, *n;
+ 	int left, change;
+ 
++	printk("kpatch-test: testing .smp_locks section changes\n");
+ 	b = buf->tail;
+ 	if (b->flags & TTYB_NORMAL)
+ 		left = 2 * b->size - b->used;