Added tests for mount / fsync / reboot

src/systemcmds/tests/module.mk

@@ -28,4 +28,5 @@ SRCS			 = test_adc.c \
 			   tests_main.c \
 			   test_param.c \
 			   test_ppm_loopback.c \
-			   test_rc.c
+			   test_rc.c \
+			   test_mount.c

src/systemcmds/tests/test_mount.c

@@ -0,0 +1,232 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 2012-2014 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/**
+ * @file test_mount.c
+ *
+ * Device mount / unmount stress test
+ *
+ * @author Lorenz Meier <lm@inf.ethz.ch>
+ */
+
+#include <sys/stat.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <systemlib/err.h>
+#include <systemlib/perf_counter.h>
+#include <string.h>
+
+#include <drivers/drv_hrt.h>
+
+#include "tests.h"
+
+int
+test_mount(int argc, char *argv[])
+{
+	const unsigned iterations = 100;
+	const unsigned alignments = 65;
+
+	/* check if microSD card is mounted */
+	struct stat buffer;
+	if (stat("/fs/microsd/", &buffer)) {
+		warnx("no microSD card mounted, aborting file test");
+		return 1;
+	}
+
+	/* read current test status from file, write test instructions for next round */
+	const char* cmd_filename = "/fs/microsd/mount_test_cmds";
+
+	/* initial values */
+	int it_left_fsync = 100;
+	int it_left_abort = 100;
+
+	int cmd_fd;
+	if (stat(cmd_filename, &buffer)) {
+
+		/* command file exists, read off state */
+		cmd_fd = open(cmd_filename, O_RDWR);
+		char buf[64];
+		int ret = read(cmd_fd, buf, sizeof(buf));
+		if (ret > 0)
+			ret = sscanf("%d %d", &it_left_fsync, &it_left_abort);
+
+		warnx("Iterations left: #%d / #%d\n(%s)", it_left_fsync, it_left_abort, buf);
+
+		/* now write again what to do next */
+		if (it_left_fsync > 0)
+			it_left_fsync--;
+		if (it_left_fsync == 0 && it_left_abort > 0)
+			it_left_abort--;
+
+		if (it_left_abort == 0)
+			(void)unlink(cmd_filename);
+			return 0;
+
+	} else {
+
+		/* this must be the first iteration, do something */
+		cmd_fd = open(cmd_filename, O_TRUNC | O_WRONLY | O_CREAT);
+	}
+
+	char buf[64];
+	sprintf(buf, "%d %d", it_left_fsync, it_left_abort);
+	write(cmd_fd, buf, strlen(buf) + 1);	
+
+	/* perform tests for a range of chunk sizes */
+	unsigned chunk_sizes[] = {1, 5, 8, 13, 16, 32};
+
+	for (unsigned c = 0; c < (sizeof(chunk_sizes) / sizeof(chunk_sizes[0])); c++) {
+
+		printf("\n====== FILE TEST: %u bytes chunks ======\n", chunk_sizes[c]);
+
+		for (unsigned a = 0; a < alignments; a++) {
+
+			printf("\n");
+			warnx("----- alignment test: %u bytes -----", a);
+
+			uint8_t write_buf[chunk_sizes[c] + alignments] __attribute__((aligned(64)));
+
+			/* fill write buffer with known values */
+			for (int i = 0; i < sizeof(write_buf); i++) {
+				/* this will wrap, but we just need a known value with spacing */
+				write_buf[i] = i+11;
+			}
+
+			uint8_t read_buf[chunk_sizes[c] + alignments] __attribute__((aligned(64)));
+			hrt_abstime start, end;
+			//perf_counter_t wperf = perf_alloc(PC_ELAPSED, "SD writes (aligned)");
+
+			int fd = open("/fs/microsd/testfile", O_TRUNC | O_WRONLY | O_CREAT);
+
+			warnx("testing unaligned writes - please wait..");
+
+			start = hrt_absolute_time();
+			for (unsigned i = 0; i < iterations; i++) {
+				//perf_begin(wperf);
+				int wret = write(fd, write_buf + a, chunk_sizes[c]);
+
+				if (wret != chunk_sizes[c]) {
+					warn("WRITE ERROR!");
+
+					if ((0x3 & (uintptr_t)(write_buf + a)))
+						errx(1, "memory is unaligned, align shift: %d", a);
+
+				}
+
+				if (it_left_fsync > 0) {
+					fsync(fd);
+				} else {
+					if (it_left_abort % chunk_sizes[c] == 0) {
+						systemreset();
+					}
+				}
+				//perf_end(wperf);
+
+			}
+			end = hrt_absolute_time();
+
+			//warnx("%dKiB in %llu microseconds", iterations / 2, end - start);
+
+			//perf_print_counter(wperf);
+			//perf_free(wperf);
+
+			close(fd);
+			fd = open("/fs/microsd/testfile", O_RDONLY);
+
+			/* read back data for validation */
+			for (unsigned i = 0; i < iterations; i++) {
+				int rret = read(fd, read_buf, chunk_sizes[c]);
+
+				if (rret != chunk_sizes[c]) {
+					warnx("READ ERROR!");
+					return 1;
+				}
+				
+				/* compare value */
+				bool compare_ok = true;
+
+				for (int j = 0; j < chunk_sizes[c]; j++) {
+					if (read_buf[j] != write_buf[j + a]) {
+						warnx("COMPARISON ERROR: byte %d, align shift: %d", j, a);
+						compare_ok = false;
+						break;
+					}
+				}
+
+				if (!compare_ok) {
+					warnx("ABORTING FURTHER COMPARISON DUE TO ERROR");
+					return 1;
+				}
+
+			}
+
+			int ret = unlink("/fs/microsd/testfile");
+			close(fd);
+
+			if (ret) {
+				warnx("UNLINKING FILE FAILED");
+				return 1;
+			}
+
+		}
+	}
+
+	/* list directory */
+	DIR		*d;
+	struct dirent	*dir;
+	d = opendir("/fs/microsd");
+	if (d) {
+
+		while ((dir = readdir(d)) != NULL) {
+			//printf("%s\n", dir->d_name);
+		}
+
+		closedir(d);
+
+		warnx("directory listing ok (FS mounted and readable)");
+
+	} else {
+		/* failed opening dir */
+		warnx("FAILED LISTING MICROSD ROOT DIRECTORY");
+		return 1;
+	}
+
+	/* we always reboot for the next test if we get here */
+	systemreset();
+
+	/* never going to get here */
+	return 0;
+}

src/systemcmds/tests/tests.h

@@ -109,6 +109,7 @@ extern int	test_bson(int argc, char *argv[]);
 extern int	test_file(int argc, char *argv[]);
 extern int	test_mixer(int argc, char *argv[]);
 extern int	test_rc(int argc, char *argv[]);
+extern int	test_mount(int argc, char *argv[]);
 
 __END_DECLS
 

src/systemcmds/tests/tests_main.c

@@ -106,6 +106,7 @@ const struct {
 	{"file",		test_file,	0},
 	{"mixer",		test_mixer,	OPT_NOJIGTEST | OPT_NOALLTEST},
 	{"rc",			test_rc,	OPT_NOJIGTEST | OPT_NOALLTEST},
+	{"mount",		test_mount,	OPT_NOJIGTEST | OPT_NOALLTEST},
 	{"help",		test_help,	OPT_NOALLTEST | OPT_NOHELP | OPT_NOJIGTEST},
 	{NULL,			NULL, 		0}
 };