diff options
Diffstat (limited to 'fs/xfs/xfs_dir2_readdir.c')
| -rw-r--r-- | fs/xfs/xfs_dir2_readdir.c | 69 |
1 files changed, 59 insertions, 10 deletions
diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c index 5f4f705eebbb..8993ec17452c 100644 --- a/fs/xfs/xfs_dir2_readdir.c +++ b/fs/xfs/xfs_dir2_readdir.c @@ -36,6 +36,44 @@ #include "xfs_trace.h" #include "xfs_bmap.h" +/* + * Directory file type support functions + */ +static unsigned char xfs_dir3_filetype_table[] = { + DT_UNKNOWN, DT_REG, DT_DIR, DT_CHR, DT_BLK, + DT_FIFO, DT_SOCK, DT_LNK, DT_WHT, +}; + +unsigned char +xfs_dir3_get_dtype( + struct xfs_mount *mp, + __uint8_t filetype) +{ + if (!xfs_sb_version_hasftype(&mp->m_sb)) + return DT_UNKNOWN; + + if (filetype >= XFS_DIR3_FT_MAX) + return DT_UNKNOWN; + + return xfs_dir3_filetype_table[filetype]; +} +/* + * @mode, if set, indicates that the type field needs to be set up. + * This uses the transformation from file mode to DT_* as defined in linux/fs.h + * for file type specification. This will be propagated into the directory + * structure if appropriate for the given operation and filesystem config. + */ +const unsigned char xfs_mode_to_ftype[S_IFMT >> S_SHIFT] = { + [0] = XFS_DIR3_FT_UNKNOWN, + [S_IFREG >> S_SHIFT] = XFS_DIR3_FT_REG_FILE, + [S_IFDIR >> S_SHIFT] = XFS_DIR3_FT_DIR, + [S_IFCHR >> S_SHIFT] = XFS_DIR3_FT_CHRDEV, + [S_IFBLK >> S_SHIFT] = XFS_DIR3_FT_BLKDEV, + [S_IFIFO >> S_SHIFT] = XFS_DIR3_FT_FIFO, + [S_IFSOCK >> S_SHIFT] = XFS_DIR3_FT_SOCK, + [S_IFLNK >> S_SHIFT] = XFS_DIR3_FT_SYMLINK, +}; + STATIC int xfs_dir2_sf_getdents( xfs_inode_t *dp, /* incore directory inode */ @@ -109,20 +147,23 @@ xfs_dir2_sf_getdents( */ sfep = xfs_dir2_sf_firstentry(sfp); for (i = 0; i < sfp->count; i++) { + __uint8_t filetype; + off = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, xfs_dir2_sf_get_offset(sfep)); if (ctx->pos > off) { - sfep = xfs_dir2_sf_nextentry(sfp, sfep); + sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep); continue; } - ino = xfs_dir2_sfe_get_ino(sfp, sfep); + ino = xfs_dir3_sfe_get_ino(mp, sfp, sfep); + filetype = xfs_dir3_sfe_get_ftype(mp, sfp, sfep); ctx->pos = off & 0x7fffffff; - if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, - ino, DT_UNKNOWN)) + if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, ino, + xfs_dir3_get_dtype(mp, filetype))) return 0; - sfep = xfs_dir2_sf_nextentry(sfp, sfep); + sfep = xfs_dir3_sf_nextentry(mp, sfp, sfep); } ctx->pos = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & @@ -180,6 +221,8 @@ xfs_dir2_block_getdents( * Each object is a real entry (dep) or an unused one (dup). */ while (ptr < endptr) { + __uint8_t filetype; + dup = (xfs_dir2_data_unused_t *)ptr; /* * Unused, skip it. @@ -194,7 +237,7 @@ xfs_dir2_block_getdents( /* * Bump pointer for the next iteration. */ - ptr += xfs_dir2_data_entsize(dep->namelen); + ptr += xfs_dir3_data_entsize(mp, dep->namelen); /* * The entry is before the desired starting point, skip it. */ @@ -205,11 +248,13 @@ xfs_dir2_block_getdents( (char *)dep - (char *)hdr); ctx->pos = cook & 0x7fffffff; + filetype = xfs_dir3_dirent_get_ftype(mp, dep); /* * If it didn't fit, set the final offset to here & return. */ if (!dir_emit(ctx, (char *)dep->name, dep->namelen, - be64_to_cpu(dep->inumber), DT_UNKNOWN)) { + be64_to_cpu(dep->inumber), + xfs_dir3_get_dtype(mp, filetype))) { xfs_trans_brelse(NULL, bp); return 0; } @@ -500,6 +545,8 @@ xfs_dir2_leaf_getdents( * Get more blocks and readahead as necessary. */ while (curoff < XFS_DIR2_LEAF_OFFSET) { + __uint8_t filetype; + /* * If we have no buffer, or we're off the end of the * current buffer, need to get another one. @@ -554,7 +601,7 @@ xfs_dir2_leaf_getdents( } dep = (xfs_dir2_data_entry_t *)ptr; length = - xfs_dir2_data_entsize(dep->namelen); + xfs_dir3_data_entsize(mp, dep->namelen); ptr += length; } /* @@ -585,11 +632,13 @@ xfs_dir2_leaf_getdents( } dep = (xfs_dir2_data_entry_t *)ptr; - length = xfs_dir2_data_entsize(dep->namelen); + length = xfs_dir3_data_entsize(mp, dep->namelen); + filetype = xfs_dir3_dirent_get_ftype(mp, dep); ctx->pos = xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff; if (!dir_emit(ctx, (char *)dep->name, dep->namelen, - be64_to_cpu(dep->inumber), DT_UNKNOWN)) + be64_to_cpu(dep->inumber), + xfs_dir3_get_dtype(mp, filetype))) break; /* |