tests: move all test-cases into component subdirectories

There are around 300 regression tests, 250 being in tests/bugs. Running
partial set of tests/bugs is not easy because this is a flat directory
with almost all tests inside.

It would be valuable to make partial test/bugs easier, and allow the use
of mulitple build hosts for a single commit, each running a subset of
the tests for a quicker result.

Additional changes made:
- correct the include path for *.rc shell libraries and *.py utils
- make the testcases pass checkpatch
- arequal-checksum in afr/self-heal.t was never executed, now it is
- include.rc now complains loudly if it fails to find env.rc

Change-Id: I26ffd067e9853d3be1fd63b2f37d8aa0fd1b4fea
BUG: 1178685
Reported-by: Emmanuel Dreyfus <manu@netbsd.org>
Reported-by: Atin Mukherjee <amukherj@redhat.com>
URL: http://www.gluster.org/pipermail/gluster-devel/2014-December/043414.html
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/9353
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Emmanuel Dreyfus <manu@netbsd.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

2 files changed, 147 insertions, 0 deletions

diff --git a/tests/bugs/write-behind/bug-1058663.c b/tests/bugs/write-behind/bug-1058663.c
new file mode 100644
index 00000000000..5e522e98048
--- /dev/null
+++ b/tests/bugs/write-behind/bug-1058663.c
@@ -0,0 +1,119 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <signal.h>
+
+#define FILE_SIZE 1048576
+
+/* number of tests to run */
+#define RUN_LOOP 1000
+
+/* number of SIGBUS before exiting */
+#define MAX_SIGBUS 1
+static int expect_sigbus;
+static int sigbus_received;
+
+/* test for truncate()/seek()/write()/mmap()
+ * There should ne no SIGBUS triggered.
+ */
+void seek_write(char *filename)
+{
+	int fd;
+	uint8_t *map;
+	int i;
+
+	fd = open(filename, O_RDWR|O_CREAT|O_TRUNC, 0600);
+	lseek(fd, FILE_SIZE - 1, SEEK_SET);
+	write(fd, "\xff", 1);
+
+	map = mmap(NULL, FILE_SIZE, PROT_READ, MAP_PRIVATE, fd, 0);
+	for (i = 0; i < (FILE_SIZE - 1); i++) {
+		if (map[i] != 0) /* should never be true */
+			abort();
+	}
+	munmap(map, FILE_SIZE);
+
+	close(fd);
+}
+
+int read_after_eof(char *filename)
+{
+	int ret = 0;
+	int fd;
+	char *data;
+	uint8_t *map;
+
+	fd = open(filename, O_RDWR|O_CREAT|O_TRUNC, 0600);
+	lseek(fd, FILE_SIZE - 1, SEEK_SET);
+	write(fd, "\xff", 1);
+
+	/* trigger verify that reading after EOF fails */
+	ret = read(fd, data, FILE_SIZE / 2);
+	if (ret != 0)
+		return 1;
+
+	/* map an area of 1 byte after FILE_SIZE */
+	map = mmap(NULL, 1, PROT_READ, MAP_PRIVATE, fd, FILE_SIZE);
+	/* map[0] is an access after EOF, it should trigger SIGBUS */
+	if (map[0] != 0)
+		/* it is expected that we exit before we get here */
+		if (!sigbus_received)
+			return 1;
+	munmap(map, FILE_SIZE);
+
+	close(fd);
+
+	return ret;
+}
+
+/* signal handler for SIGBUS */
+void catch_sigbus(int signum)
+{
+	switch (signum) {
+#ifdef __NetBSD__
+	/* Depending on architecture, we can get SIGSEGV */
+	case SIGSEGV: /* FALLTHROUGH */
+#endif
+	case SIGBUS:
+		sigbus_received++;
+		if (!expect_sigbus)
+			exit(EXIT_FAILURE);
+		if (sigbus_received >= MAX_SIGBUS)
+			exit(EXIT_SUCCESS);
+		break;
+	default:
+		printf("Unexpected signal received: %d\n", signum);
+	}
+}
+
+int main(int argc, char **argv)
+{
+	int i = 0;
+
+	if (argc == 1) {
+		printf("Usage: %s <filename>\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+
+#ifdef __NetBSD__
+	/* Depending on architecture, we can get SIGSEGV */
+	signal(SIGSEGV, catch_sigbus);
+#endif
+	signal(SIGBUS, catch_sigbus);
+
+	/* the next test should not trigger SIGBUS */
+	expect_sigbus = 0;
+	for (i = 0; i < RUN_LOOP; i++) {
+		seek_write(argv[1]);
+	}
+
+	/* the next test should trigger SIGBUS */
+	expect_sigbus = 1;
+	if (read_after_eof(argv[1]))
+		return EXIT_FAILURE;
+
+	return EXIT_SUCCESS;
+}
diff --git a/tests/bugs/write-behind/bug-1058663.t b/tests/bugs/write-behind/bug-1058663.t
new file mode 100644
index 00000000000..a900a6d7afa
--- /dev/null
+++ b/tests/bugs/write-behind/bug-1058663.t
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+
+cleanup;
+
+## Start and create a volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume info;
+
+TEST $CLI volume create $V0 $H0:$B0/$V0;
+TEST $CLI volume start $V0;
+
+TEST glusterfs --entry-timeout=0 --attribute-timeout=0 -s $H0 --volfile-id $V0 $M0
+
+# compile the test program and run it
+TEST $CC $(dirname $0)/bug-1058663.c -o $(dirname $0)/bug-1058663;
+TEST $(dirname $0)/bug-1058663 $M0/bug-1058663.bin;
+TEST rm -f $(dirname $0)/M0/bug-1058663.bin;
+
+EXPECT_WITHIN $UMOUNT_TIMEOUT "Y" force_umount $M0
+
+TEST $CLI volume stop $V0;
+TEST $CLI volume delete $V0;
+
+cleanup;