From: Daeho Jeong <daehoje...@google.com> Added new commands, get_coption and set_coption, to support F2FS_IOC_GET_COMPRESS_OPTION and F2FS_IOC_SET_COMPRESS_OPTION.
Signed-off-by: Daeho Jeong <daehoje...@google.com> --- v2: changed the file open option of set_coption to write only. --- tools/f2fs_io/f2fs_io.c | 61 +++++++++++++++++++++++++++++++++++++++++ tools/f2fs_io/f2fs_io.h | 9 ++++++ 2 files changed, 70 insertions(+) diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c index 5a2d06e..7e6cfd8 100644 --- a/tools/f2fs_io/f2fs_io.c +++ b/tools/f2fs_io/f2fs_io.c @@ -905,6 +905,65 @@ static void do_reserve_cblocks(int argc, char **argv, const struct cmd_desc *cmd exit(0); } +#define get_coption_desc "get compression option of a compressed file" +#define get_coption_help \ +"f2fs_io get_coption [file]\n\n" \ +" algorithm : compression algorithm (0:lzo, 1: lz4, 2:zstd, 3:lzorle)\n" \ +" log_cluster_size : compression cluster log size (2 <= log_size <= 8)\n" + +static void do_get_coption(int argc, char **argv, const struct cmd_desc *cmd) +{ + struct f2fs_comp_option option; + int ret, fd; + + if (argc != 2) { + fputs("Excess arguments\n\n", stderr); + fputs(cmd->cmd_help, stderr); + exit(1); + } + + fd = xopen(argv[1], O_RDONLY, 0); + + ret = ioctl(fd, F2FS_IOC_GET_COMPRESS_OPTION, &option); + if (ret < 0) + die_errno("F2FS_IOC_GET_COMPRESS_OPTION failed"); + + printf("compression algorithm:%u\n", option.algorithm); + printf("compression cluster log size:%u\n", option.log_cluster_size); + + exit(0); +} + +#define set_coption_desc "set compression option of a compressed file" +#define set_coption_help \ +"f2fs_io set_coption [algorithm] [log_cluster_size] [file_path]\n\n" \ +" algorithm : compression algorithm (0:lzo, 1: lz4, 2:zstd, 3:lzorle)\n" \ +" log_cluster_size : compression cluster log size (2 <= log_size <= 8)\n" + +static void do_set_coption(int argc, char **argv, const struct cmd_desc *cmd) +{ + struct f2fs_comp_option option; + int fd, ret; + + if (argc != 4) { + fputs("Excess arguments\n\n", stderr); + fputs(cmd->cmd_help, stderr); + exit(1); + } + + option.algorithm = atoi(argv[1]); + option.log_cluster_size = atoi(argv[2]); + + fd = xopen(argv[3], O_WRONLY, 0); + + ret = ioctl(fd, F2FS_IOC_SET_COMPRESS_OPTION, &option); + if (ret < 0) + die_errno("F2FS_IOC_SET_COMPRESS_OPTION failed"); + + printf("set compression option: algorithm=%u, log_cluster_size=%u\n", + option.algorithm, option.log_cluster_size); + exit(0); +} #define CMD_HIDDEN 0x0001 #define CMD(name) { #name, do_##name, name##_desc, name##_help, 0 } @@ -930,6 +989,8 @@ const struct cmd_desc cmd_list[] = { CMD(get_cblocks), CMD(release_cblocks), CMD(reserve_cblocks), + CMD(get_coption), + CMD(set_coption), { NULL, NULL, NULL, NULL, 0 } }; diff --git a/tools/f2fs_io/f2fs_io.h b/tools/f2fs_io/f2fs_io.h index 05d4cfe..cb56e8c 100644 --- a/tools/f2fs_io/f2fs_io.h +++ b/tools/f2fs_io/f2fs_io.h @@ -84,6 +84,10 @@ typedef u32 __be32; _IOR(F2FS_IOCTL_MAGIC, 18, __u64) #define F2FS_IOC_RESERVE_COMPRESS_BLOCKS \ _IOR(F2FS_IOCTL_MAGIC, 19, __u64) +#define F2FS_IOC_GET_COMPRESS_OPTION _IOR(F2FS_IOCTL_MAGIC, 21, \ + struct f2fs_comp_option) +#define F2FS_IOC_SET_COMPRESS_OPTION _IOW(F2FS_IOCTL_MAGIC, 22, \ + struct f2fs_comp_option) #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY @@ -164,3 +168,8 @@ struct f2fs_flush_device { u32 dev_num; /* device number to flush */ u32 segments; /* # of segments to flush */ }; + +struct f2fs_comp_option { + u8 algorithm; + u8 log_cluster_size; +}; -- 2.29.1.341.ge80a0c044ae-goog