Related bug: http://patchwork.ozlabs.org/patch/118863 Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx> --- ltp/fsstress.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 76 insertions(+), 0 deletions(-) diff --git a/ltp/fsstress.c b/ltp/fsstress.c index baccbbd..19b5858 100644 --- a/ltp/fsstress.c +++ b/ltp/fsstress.c @@ -24,6 +24,9 @@ #ifdef HAVE_ATTR_ATTRIBUTES_H #include <attr/attributes.h> #endif +#ifdef HAVE_LINUX_FIEMAP_H +#include <linux/fiemap.h> +#endif #ifdef FALLOCATE #include <linux/falloc.h> #ifndef FALLOC_FL_PUNCH_HOLE @@ -65,6 +68,7 @@ typedef enum { OP_DWRITE, OP_FALLOCATE, OP_FDATASYNC, + OP_FIEMAP, OP_FREESP, OP_FSYNC, OP_GETATTR, @@ -149,6 +153,7 @@ void dread_f(int, long); void dwrite_f(int, long); void fallocate_f(int, long); void fdatasync_f(int, long); +void fiemap_f(int, long); void freesp_f(int, long); void fsync_f(int, long); void getdents_f(int, long); @@ -184,6 +189,7 @@ opdesc_t ops[] = { { OP_DWRITE, "dwrite", dwrite_f, 4, 1 }, { OP_FALLOCATE, "fallocate", fallocate_f, 1, 1 }, { OP_FDATASYNC, "fdatasync", fdatasync_f, 1, 1 }, + { OP_FIEMAP, "fiemap", fiemap_f, 1, 1 }, { OP_FREESP, "freesp", freesp_f, 1, 1 }, { OP_FSYNC, "fsync", fsync_f, 1, 1 }, { OP_GETATTR, "getattr", getattr_f, 1, 0 }, @@ -2162,6 +2168,76 @@ fdatasync_f(int opno, long r) free_pathname(&f); close(fd); } +void +fiemap_f(int opno, long r) +{ +#ifdef HAVE_LINUX_FIEMAP_H + int e; + pathname_t f; + int fd; + __int64_t lr; + off64_t off; + struct stat64 stb; + int v; + char st[1024]; + int blocks_to_map; + struct fiemap *fiemap; + + init_pathname(&f); + if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) { + if (v) + printf("%d/%d: fiemap - no filename\n", procid, opno); + free_pathname(&f); + return; + } + fd = open_path(&f, O_RDWR); + e = fd < 0 ? errno : 0; + check_cwd(); + if (fd < 0) { + if (v) + printf("%d/%d: fiemap - open %s failed %d\n", + procid, opno, f.path, e); + free_pathname(&f); + return; + } + if (fstat64(fd, &stb) < 0) { + if (v) + printf("%d/%d: fiemap - fstat64 %s failed %d\n", + procid, opno, f.path, errno); + free_pathname(&f); + close(fd); + return; + } + inode_info(st, sizeof(st), &stb, v); + blocks_to_map = random() & 0xffff; + fiemap = (struct fiemap *)malloc(sizeof(struct fiemap) + + (blocks_to_map * sizeof(struct fiemap_extent))); + if (!fiemap) { + if (v) + printf("%d/%d: malloc failed \n", procid, opno); + free_pathname(&f); + close(fd); + return; + } + lr = ((__int64_t)random() << 32) + random(); + off = (off64_t)(lr % MIN(stb.st_size + (1024 * 1024), MAXFSIZE)); + off %= maxfsize; + fiemap->fm_flags = random() & (FIEMAP_FLAGS_COMPAT | 0x10000); + fiemap->fm_extent_count = blocks_to_map; + fiemap->fm_mapped_extents = random() & 0xffff; + fiemap->fm_start = off; + fiemap->fm_length = ((__int64_t)random() << 32) + random(); + + e = ioctl(fd, FS_IOC_FIEMAP, (unsigned long)fiemap); + if (v) + printf("%d/%d: ioctl(FIEMAP) %s%s %lld %lld %x %d\n", + procid, opno, f.path, st, (long long)fiemap->fm_start, + (long long) fiemap->fm_length, fiemap->fm_flags, e); + free(fiemap); + free_pathname(&f); + close(fd); +#endif +} void freesp_f(int opno, long r) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
