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/**
* @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/systemlib.h>
#include <systemlib/perf_counter.h>
#include <string.h>
#include <drivers/drv_hrt.h>
#include "tests.h"
const int fsync_tries = 1;
const int abort_tries = 10;
int
test_mount(int argc, char *argv[])
{
const unsigned iterations = 2000;
const unsigned alignments = 10;
const char* cmd_filename = "/fs/microsd/mount_test_cmds.txt";
/* check if microSD card is mounted */
struct stat buffer;
if (stat("/fs/microsd/", &buffer)) {
warnx("no microSD card mounted, aborting file test");
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");
if (stat(cmd_filename, &buffer) == OK) {
(void)unlink(cmd_filename);
}
return 1;
}
/* read current test status from file, write test instructions for next round */
/* initial values */
int it_left_fsync = fsync_tries;
int it_left_abort = abort_tries;
int cmd_fd;
if (stat(cmd_filename, &buffer) == OK) {
/* command file exists, read off state */
cmd_fd = open(cmd_filename, O_RDWR | O_NONBLOCK);
char buf[64];
int ret = read(cmd_fd, buf, sizeof(buf));
if (ret > 0) {
int count = 0;
ret = sscanf(buf, "TEST: %u %u %n", &it_left_fsync, &it_left_abort, &count);
} else {
buf[0] = '\0';
}
if (it_left_fsync > fsync_tries)
it_left_fsync = fsync_tries;
if (it_left_abort > abort_tries)
it_left_abort = abort_tries;
warnx("Iterations left: #%d / #%d of %d / %d\n(%s)", it_left_fsync, it_left_abort,
fsync_tries, abort_tries, buf);
int it_left_fsync_prev = it_left_fsync;
/* 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--;
/* announce mode switch */
if (it_left_fsync_prev != it_left_fsync && it_left_fsync == 0) {
warnx("\n SUCCESSFULLY PASSED FSYNC'ED WRITES, CONTINUTING WITHOUT FSYNC");
fsync(stdout);
fsync(stderr);
usleep(20000);
}
}
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);
warnx("First iteration of file test\n");
}
char buf[64];
int wret = sprintf(buf, "TEST: %d %d ", it_left_fsync, it_left_abort);
lseek(cmd_fd, 0, SEEK_SET);
write(cmd_fd, buf, strlen(buf) + 1);
fsync(cmd_fd);
/* perform tests for a range of chunk sizes */
unsigned chunk_sizes[] = {32, 64, 128, 256, 512, 600, 1200};
for (unsigned c = 0; c < (sizeof(chunk_sizes) / sizeof(chunk_sizes[0])); c++) {
printf("\n\n====== FILE TEST: %u bytes chunks (%s) ======\n", chunk_sizes[c], (it_left_fsync > 0) ? "FSYNC" : "NO FSYNC");
printf("unpower the system immediately (within 0.5s) when the hash (#) sign appears\n");
fsync(stdout);
fsync(stderr);
usleep(50000);
for (unsigned a = 0; a < alignments; a++) {
printf(".");
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;
int fd = open("/fs/microsd/testfile", O_TRUNC | O_WRONLY | O_CREAT);
start = hrt_absolute_time();
for (unsigned i = 0; i < iterations; i++) {
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)))
warnx("memory is unaligned, align shift: %d", a);
return 1;
}
if (it_left_fsync > 0) {
fsync(fd);
} else {
printf("#");
fsync(stdout);
fsync(stderr);
}
}
if (it_left_fsync > 0) {
printf("#");
}
printf(".");
fsync(stdout);
fsync(stderr);
usleep(200000);
end = hrt_absolute_time();
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;
}
}
}
fsync(stdout);
fsync(stderr);
usleep(20000);
/* we always reboot for the next test if we get here */
warnx("Iteration done, rebooting..");
fsync(stdout);
fsync(stderr);
usleep(50000);
systemreset(false);
/* never going to get here */
return 0;
}
