f2fs_io: add fsync

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
index c1edef1..c84b6ab 100644 (file)
--- a/tools/f2fs_io/f2fs_io.c
+++ b/tools/f2fs_io/f2fs_io.c
@@ -130,6 +130,30 @@ static void full_write(int fd, const void *buf, size_t count)
        }
 }
 
+#define fsync_desc "fsync"
+#define fsync_help                                             \
+"f2fs_io fsync [file]\n\n"                                     \
+"fsync given the file\n"                                       \
+
+static void do_fsync(int argc, char **argv, const struct cmd_desc *cmd)
+{
+       int fd;
+
+       if (argc != 2) {
+               fputs("Excess arguments\n\n", stderr);
+               fputs(cmd->cmd_help, stderr);
+               exit(1);
+       }
+
+       fd = xopen(argv[1], O_WRONLY, 0);
+
+       if (fsync(fd) != 0)
+               die_errno("fsync failed");
+
+       printf("fsync a file\n");
+       exit(0);
+}
+
 #define set_verity_desc "Set fs-verity"
 #define set_verity_help                                        \
 "f2fs_io set_verity [file]\n\n"                                \
@@ -780,6 +804,7 @@ static void do_reserve_cblocks(int argc, char **argv, const struct cmd_desc *cmd
 static void do_help(int argc, char **argv, const struct cmd_desc *cmd);
 const struct cmd_desc cmd_list[] = {
        _CMD(help),
+       CMD(fsync),
        CMD(set_verity),
        CMD(getflags),
        CMD(setflags),