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]> --- Changes in v3: - Change to use linux/fiemap.h header Changes in v2: - Move declaration to header file --- configure.ac | 1 + tools/f2fs_io/f2fs_io.c | 41 +++++++++++++++++++++-------------------- tools/f2fs_io/f2fs_io.h | 10 ++++++++++ 3 files changed, 32 insertions(+), 20 deletions(-) diff --git a/configure.ac b/configure.ac index e9acd1a..eb1e745 100644 --- a/configure.ac +++ b/configure.ac @@ -93,6 +93,7 @@ AC_CHECK_HEADERS(m4_flatten([ linux/posix_acl.h linux/types.h linux/xattr.h + linux/fiemap.h mach/mach_time.h mntent.h scsi/sg.h diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c index abb655a..5a2d06e 100644 --- a/tools/f2fs_io/f2fs_io.c +++ b/tools/f2fs_io/f2fs_io.c @@ -631,27 +631,18 @@ 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; -}; - -#ifndef FIBMAP -#define FIBMAP _IO(0x00, 1) /* bmap access */ -#endif - #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; +#if defined(HAVE_LINUX_FIEMAP_H) && defined(HAVE_LINUX_FS_H) 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); @@ -659,22 +650,32 @@ 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]) * F2FS_BLKSIZE; + fm->fm_length = F2FS_BLKSIZE; + 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 / F2FS_BLKSIZE, count); for (i = 0; i < count; i++) { - blknum = offset + i; - - if (ioctl(fd, FIBMAP, &blknum) < 0) - die_errno("FIBMAP failed"); + if (ioctl(fd, FS_IOC_FIEMAP, fm) < 0) + die_errno("FIEMAP failed"); - printf("%u ", blknum); + phy_addr = fm->fm_extents[0].fe_physical / F2FS_BLKSIZE; + if (phy_addr == NEW_ADDR) + printf("NEW_ADDR "); + else + printf("%llu ", phy_addr); + fm->fm_start += F2FS_BLKSIZE; } printf("\n"); + free(fm); exit(0); +#else + die("Not support for this platform"); +#endif } #define gc_urgent_desc "start/end/run gc_urgent for given time period" diff --git a/tools/f2fs_io/f2fs_io.h b/tools/f2fs_io/f2fs_io.h index bd19ff9..05d4cfe 100644 --- a/tools/f2fs_io/f2fs_io.h +++ b/tools/f2fs_io/f2fs_io.h @@ -10,6 +10,13 @@ #ifdef HAVE_LINUX_TYPES_H #include <linux/types.h> #endif +#ifdef HAVE_LINUX_FIEMAP_H +#include <linux/fiemap.h> +#endif +#ifdef HAVE_LINUX_FS_H +#include <linux/fs.h> +#endif + #include <sys/types.h> #ifdef UNUSED @@ -38,6 +45,9 @@ typedef u16 __be16; typedef u32 __be32; #endif +#define F2FS_BLKSIZE 4096 +#define NEW_ADDR 0xFFFFFFFF + #ifndef FS_IOC_GETFLAGS #define FS_IOC_GETFLAGS _IOR('f', 1, long) #endif -- 2.28.0.526.ge36021eeef-goog _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
