f2fs_io: add compress/decompress commands

Added new commands, compress and decompress, to support
F2FS_IOC_COMPRESS_FILE and F2FS_IOC_DECOMPRESS_FILE.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

2 files changed, 48 insertions, 0 deletions

diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
index e53a397..033c256 100644
--- a/tools/f2fs_io/f2fs_io.c
+++ b/tools/f2fs_io/f2fs_io.c
@@ -1052,6 +1052,50 @@ static void do_set_coption(int argc, char **argv, const struct cmd_desc *cmd)
 	exit(0);
 }
 
+#define decompress_desc "decompress an already compressed file"
+#define decompress_help "f2fs_io decompress [file_path]\n\n"
+
+static void do_decompress(int argc, char **argv, const struct cmd_desc *cmd)
+{
+	int fd, ret;
+
+	if (argc != 2) {
+		fputs("Excess arguments\n\n", stderr);
+		fputs(cmd->cmd_help, stderr);
+		exit(1);
+	}
+
+	fd = xopen(argv[1], O_WRONLY, 0);
+
+	ret = ioctl(fd, F2FS_IOC_DECOMPRESS_FILE);
+	if (ret < 0)
+		die_errno("F2FS_IOC_DECOMPRESS_FILE failed");
+
+	exit(0);
+}
+
+#define compress_desc "compress a compression enabled file"
+#define compress_help "f2fs_io compress [file_path]\n\n"
+
+static void do_compress(int argc, char **argv, const struct cmd_desc *cmd)
+{
+	int fd, ret;
+
+	if (argc != 2) {
+		fputs("Excess arguments\n\n", stderr);
+		fputs(cmd->cmd_help, stderr);
+		exit(1);
+	}
+
+	fd = xopen(argv[1], O_WRONLY, 0);
+
+	ret = ioctl(fd, F2FS_IOC_COMPRESS_FILE);
+	if (ret < 0)
+		die_errno("F2FS_IOC_COMPRESS_FILE failed");
+
+	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 }
@@ -1079,6 +1123,8 @@ const struct cmd_desc cmd_list[] = {
 	CMD(reserve_cblocks),
 	CMD(get_coption),
 	CMD(set_coption),
+	CMD(decompress),
+	CMD(compress),
 	{ NULL, NULL, NULL, NULL, 0 }
 };
 
diff --git a/tools/f2fs_io/f2fs_io.h b/tools/f2fs_io/f2fs_io.h
index cb56e8c..d53e576 100644
--- a/tools/f2fs_io/f2fs_io.h
+++ b/tools/f2fs_io/f2fs_io.h
@@ -88,6 +88,8 @@ typedef u32	__be32;
 						struct f2fs_comp_option)
 #define F2FS_IOC_SET_COMPRESS_OPTION    _IOW(F2FS_IOCTL_MAGIC, 22,      \
 						struct f2fs_comp_option)
+#define F2FS_IOC_DECOMPRESS_FILE        _IO(F2FS_IOCTL_MAGIC, 23)
+#define F2FS_IOC_COMPRESS_FILE          _IO(F2FS_IOCTL_MAGIC, 24)
 
 #define F2FS_IOC_SET_ENCRYPTION_POLICY	FS_IOC_SET_ENCRYPTION_POLICY
 #define F2FS_IOC_GET_ENCRYPTION_POLICY	FS_IOC_GET_ENCRYPTION_POLICY