#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <time.h>
+#include <string.h>
#include <signal.h>
#include <termios.h>
+#include <sys/types.h>
+#include <sys/stat.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
exit(0);
}
+#define write_desc "write data into file"
+#define write_help \
+"f2fs_io write [chunk_size in 4kb] [offset in chunk_size] [count] [pattern] [IO] [file_path]\n\n" \
+"Write given patten data in file_path\n" \
+"pattern can be\n" \
+" zero : zeros\n" \
+" inc_num : incrementing numbers\n" \
+" rand : random numbers\n" \
+"IO can be\n" \
+" buffered : buffered IO\n" \
+" dio : direct IO\n" \
+
+static void do_write(int argc, char **argv, const struct cmd_desc *cmd)
+{
+ u64 buf_size = 0, inc_num = 0, ret = 0, written = 0;
+ loff_t offset;
+ char *buf = NULL;
+ unsigned bs, count, i;
+ int flags = 0;
+ int fd;
+
+ srand(time(0));
+
+ if (argc != 7) {
+ fputs("Excess arguments\n\n", stderr);
+ fputs(cmd->cmd_help, stderr);
+ exit(1);
+ }
+
+ bs = atoi(argv[1]);
+ if (bs > 1024) {
+ fputs("Too big chunk size - limit: 4MB\n\n", stderr);
+ exit(1);
+ }
+ buf_size = bs * 4096;
+
+ offset = atoi(argv[2]) * buf_size;
+
+ buf = aligned_alloc(4096, buf_size);
+ if (!buf) {
+ fputs("Memory alloc failed\n\n", stderr);
+ exit(1);
+ }
+ count = atoi(argv[3]);
+
+ if (!strcmp(argv[4], "zero")) {
+ memset(buf, 0, buf_size);
+ } else if (strcmp(argv[4], "inc_num") &&
+ strcmp(argv[4], "rand")) {
+ fputs("Wrong pattern type\n\n", stderr);
+ exit(1);
+ }
+
+ if (!strcmp(argv[5], "buffered")) {
+ flags |= O_DIRECT;
+ } else if (strcmp(argv[5], "dio")) {
+ fputs("Wrong IO type\n\n", stderr);
+ exit(1);
+ }
+
+ fd = open(argv[6], O_CREAT | O_WRONLY | flags, 0755);
+ if (fd == -1) {
+ fputs("Open failed\n\n", stderr);
+ exit(1);
+ }
+
+ for (i = 0; i < count; i++) {
+ if (!strcmp(argv[4], "inc_num"))
+ *(int *)buf = inc_num++;
+ else if (!strcmp(argv[4], "rand"))
+ *(int *)buf = rand();
+
+ /* write data */
+ ret = pwrite(fd, buf, buf_size, offset + buf_size * i);
+ if (ret != buf_size)
+ break;
+ written += ret;
+ }
+
+ printf("Written %lu bytes with pattern=%s\n", written, argv[4]);
+ exit(0);
+}
+
#define CMD_HIDDEN 0x0001
#define CMD(name) { #name, do_##name, name##_desc, name##_help, 0 }
#define _CMD(name) { #name, do_##name, NULL, NULL, CMD_HIDDEN }
_CMD(help),
CMD(shutdown),
CMD(pinfile),
+ CMD(write),
{ NULL, NULL, NULL, NULL, 0 }
};