1 files changed, 123 insertions, 0 deletions
diff --git a/tests/kernel/lp-509180/test.c b/tests/kernel/lp-509180/test.c
new file mode 100644
index 0000000..5b4886b
--- /dev/null
+++ b/tests/kernel/lp-509180/test.c
@@ -0,0 +1,123 @@
+/*
+ * Author: Colin King <colin.king@canonical.com>
+ *
+ * Copyright (C) 2012 Canonical, Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#define TEST_ERROR	(2)
+
+#define OFFSET		(9)
+
+#define OPT_INC		(0x0001)
+#define OPT_DEC		(0x0002)
+
+void usage(char *name)
+{
+	fprintf(stderr, "Usage: [-i | -d] file\n");
+}
+
+/*
+ *  https://bugs.launchpad.net/ecryptfs/+bug/509180
+ *  Increment/Decrement 9th byte in lower file
+ */
+int main(int argc, char **argv)
+{
+	int fd;
+	int opt, flags = 0;
+	int rc = 0;
+	char *file;
+	unsigned char buffer[1];
+
+	if (argc < 3) {
+		usage(argv[0]);
+		exit(TEST_ERROR);
+	}
+
+	while ((opt = getopt(argc, argv, "id")) != -1) {
+		switch (opt) {
+		case 'i':
+			flags |= OPT_INC;
+			break;
+		case 'd':
+			flags |= OPT_DEC;
+			break;
+		default:
+			usage(argv[0]);
+			exit(TEST_ERROR);
+		}
+	}
+
+	if ((flags == 0) || (flags == (OPT_INC | OPT_DEC))) {
+		fprintf(stderr, "Need to specify -i or -d\n");
+		exit(TEST_ERROR);
+	}
+
+	file = argv[optind];
+
+	if ((fd = open(file, O_RDWR, 0700)) < 0) {
+		fprintf(stderr, "Cannot open %s : %s\n", file, strerror(errno));
+		exit(TEST_ERROR);
+	}
+
+	if ((lseek(fd, (off_t)OFFSET, SEEK_SET)) < 0) {
+		fprintf(stderr, "Cannot lseek to offset %d in %s : %s\n",
+			OFFSET, file, strerror(errno));
+		rc = TEST_ERROR;
+		goto tidy;
+	}
+
+	if (read(fd, buffer, sizeof(buffer)) != sizeof(buffer)) {
+		fprintf(stderr, "Failed to read\n");
+		rc = TEST_ERROR;
+		goto tidy;
+	}
+
+	if (flags & OPT_INC)
+		buffer[0]++;
+
+	if (flags & OPT_DEC)
+		buffer[0]--;
+
+	if ((lseek(fd, (off_t)OFFSET, SEEK_SET)) < 0) {
+		fprintf(stderr, "Cannot lseek to offset %d in %s : %s\n",
+			OFFSET, file, strerror(errno));
+		rc = TEST_ERROR;
+		goto tidy;
+	}
+
+	if (write(fd, buffer, sizeof(buffer)) != sizeof(buffer)) {
+		fprintf(stderr, "Failed to write\n");
+		rc = TEST_ERROR;
+	}
+
+tidy:
+	if (close(fd) < 0) {
+		fprintf(stderr, "Close failed: %s\n", strerror(errno));
+		exit(TEST_ERROR);
+	}
+
+	exit(rc);
+}