From: Daeho Jeong <[email protected]> Currently we support fiemap command using fibmap. It's simple and easy to use, but we cannot use this for compressed file. To support more different types of files, we need to change this to use fiemap.
Signed-off-by: Daeho Jeong <[email protected]> --- tools/f2fs_io/f2fs_io.c | 56 ++++++++++++++++++++++++++++------------- 1 file changed, 39 insertions(+), 17 deletions(-) diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c index abb655a..fc81b93 100644 --- a/tools/f2fs_io/f2fs_io.c +++ b/tools/f2fs_io/f2fs_io.c @@ -631,27 +631,42 @@ static void do_randread(int argc, char **argv, const struct cmd_desc *cmd) exit(0); } -struct file_ext { - __u32 f_pos; - __u32 start_blk; - __u32 end_blk; - __u32 blk_count; +struct fiemap_extent { + __u64 fe_logical; + __u64 fe_physical; + __u64 fe_length; + __u64 fe_reserved64[2]; + __u32 fe_flags; + __u32 fe_reserved[3]; }; -#ifndef FIBMAP -#define FIBMAP _IO(0x00, 1) /* bmap access */ +struct fiemap { + __u64 fm_start; + __u64 fm_length; + __u32 fm_flags; + __u32 fm_mapped_extents; + __u32 fm_extent_count; + __u32 fm_reserved; + struct fiemap_extent fm_extent[0]; +}; + +#ifndef FIEMAP +#define FIEMAP _IOWR('f', 11, struct fiemap) #endif +#define NEW_ADDR 0xFFFFFFFF + #define fiemap_desc "get block address in file" #define fiemap_help \ "f2fs_io fiemap [offset in 4kb] [count] [file_path]\n\n"\ static void do_fiemap(int argc, char **argv, const struct cmd_desc *cmd) { - u64 offset; - u32 blknum; unsigned count, i; int fd; + __u64 phy_addr; + struct fiemap *fm = xmalloc(sizeof(struct fiemap) + + sizeof(struct fiemap_extent)); if (argc != 4) { fputs("Excess arguments\n\n", stderr); @@ -659,21 +674,28 @@ static void do_fiemap(int argc, char **argv, const struct cmd_desc *cmd) exit(1); } - offset = atoi(argv[1]); + fm->fm_start = atoi(argv[1]) * 4096; + fm->fm_length = 4096; + fm->fm_extent_count = 1; count = atoi(argv[2]); fd = xopen(argv[3], O_RDONLY | O_LARGEFILE, 0); - printf("Fiemap: offset = %08"PRIx64" len = %d\n", offset, count); + printf("Fiemap: offset = %08"PRIx64" len = %d\n", + fm->fm_start / 4096, count); for (i = 0; i < count; i++) { - blknum = offset + i; - - if (ioctl(fd, FIBMAP, &blknum) < 0) - die_errno("FIBMAP failed"); - - printf("%u ", blknum); + if (ioctl(fd, FIEMAP, fm) < 0) + die_errno("FIEMAP failed"); + + phy_addr = fm->fm_extent[0].fe_physical / 4096; + if (phy_addr == NEW_ADDR) + printf("NEW_ADDR "); + else + printf("%llu ", phy_addr); + fm->fm_start += 4096; } printf("\n"); + free(fm); exit(0); } -- 2.28.0.402.g5ffc5be6b7-goog _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
