On Fri, Aug 02, 2013 at 05:49:34PM +0800, Zheng Liu wrote:
> From: Zheng Liu <wenqing.lz@xxxxxxxxxx>
>
> This commit tries to make mkdir and expanddir command support inline
> date feature.
>
> In ext2fs_expand_dir() function ext2fs_inline_data_convert() will be
> called to expand a directory with inline data. It tries to allocate
> a block and copy all directory entries into it.
>
> In ext2fs_mkdir() it calls ext2fs_new_dir_inline_data() function to
> create a new directory with inline data.
>
> Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
> Signed-off-by: Zheng Liu <wenqing.lz@xxxxxxxxxx>
> ---
> lib/ext2fs/expanddir.c | 18 +--
> lib/ext2fs/ext2fs.h | 5 +
> lib/ext2fs/ext2fsP.h | 13 +++
> lib/ext2fs/inline_data.c | 280 ++++++++++++++++++++++++++++++++++++++++++++++
> lib/ext2fs/mkdir.c | 102 +++++++++++++----
> lib/ext2fs/newdir.c | 33 ++++++
> 6 files changed, 420 insertions(+), 31 deletions(-)
>
> diff --git a/lib/ext2fs/expanddir.c b/lib/ext2fs/expanddir.c
> index 22558d6..9696b61 100644
> --- a/lib/ext2fs/expanddir.c
> +++ b/lib/ext2fs/expanddir.c
> @@ -19,13 +19,7 @@
> #include "ext2_fs.h"
> #include "ext2fs.h"
>
> -struct expand_dir_struct {
> - int done;
> - int newblocks;
> - blk64_t goal;
> - errcode_t err;
> - ext2_ino_t dir;
> -};
> +#include "ext2fsP.h"
>
> static int expand_dir_proc(ext2_filsys fs,
> blk64_t *blocknr,
> @@ -114,6 +108,16 @@ errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir)
> es.newblocks = 0;
> es.dir = dir;
>
> + if (ext2fs_inode_has_inline_data(fs, dir)) {
> + retval = ext2fs_inline_data_convert(fs, dir, &es);
> + if (retval)
> + return retval;
> + if (!es.done)
> + return EXT2_ET_EXPAND_DIR_ERR;
> +
> + return 0;
> + }
> +
> retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_APPEND,
> 0, expand_dir_proc, &es);
>
> diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
> index 6e3bf6e..934dbd0 100644
> --- a/lib/ext2fs/ext2fs.h
> +++ b/lib/ext2fs/ext2fs.h
> @@ -1356,6 +1356,9 @@ extern errcode_t ext2fs_inline_data_iterate(ext2_filsys fs,
> struct ext2_inode_large *inode,
> void *priv_data),
> void *priv_data);
> +extern errcode_t ext2fs_inline_data_create(ext2_filsys fs,
> + struct ext2_inode_large *inode,
> + unsigned int len);
>
> /* inode.c */
> extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
> @@ -1430,6 +1433,8 @@ int ext2fs_native_flag(void);
> /* newdir.c */
> extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
> ext2_ino_t parent_ino, char **block);
> +extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
> + ext2_ino_t parent_ino, struct ext2_inode *inode);
>
> /* mkdir.c */
> extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
> diff --git a/lib/ext2fs/ext2fsP.h b/lib/ext2fs/ext2fsP.h
> index e86d452..ed89272 100644
> --- a/lib/ext2fs/ext2fsP.h
> +++ b/lib/ext2fs/ext2fsP.h
> @@ -62,6 +62,17 @@ struct dir_context {
> };
>
> /*
> + * For expanding directory
> + */
> +struct expand_dir_struct {
> + int done;
> + int newblocks;
> + blk64_t goal;
> + errcode_t err;
> + ext2_ino_t dir;
> +};
> +
> +/*
> * Inode cache structure
> */
> struct ext2_inode_cache {
> @@ -97,6 +108,8 @@ extern int ext2fs_process_dir_inline_data(ext2_filsys fs,
> extern errcode_t ext2fs_inline_data_find(ext2_filsys fs,
> struct ext2_inode_large *inode,
> struct inline_data *data);
> +extern errcode_t ext2fs_inline_data_convert(ext2_filsys fs, ext2_ino_t ino,
> + void *priv_data);
>
> /* Generic numeric progress meter */
>
> diff --git a/lib/ext2fs/inline_data.c b/lib/ext2fs/inline_data.c
> index 1220418..c936e28 100644
> --- a/lib/ext2fs/inline_data.c
> +++ b/lib/ext2fs/inline_data.c
> @@ -21,6 +21,14 @@
>
> static void *ext2fs_get_inline_xattr_pos(struct ext2_inode_large *inode,
> struct inline_data *data);
> +static void ext2fs_inline_data_finish_convert(ext2_filsys fs, ext2_ino_t ino,
> + char *target, char *buf,
> + int inline_size);
> +static void ext2fs_update_final_de(ext2_filsys fs, char *de_buf,
> + int old_size, int new_size);
> +static errcode_t ext2fs_inline_data_destory_data(ext2_filsys fs, ext2_ino_t ino,
Do you mean "destroy" and not "destory"?
> + struct ext2_inode_large *inode,
> + struct inline_data *data);
>
> errcode_t ext2fs_inline_data_find(ext2_filsys fs,
> struct ext2_inode_large *inode,
> @@ -68,6 +76,48 @@ static void *ext2fs_get_inline_xattr_pos(struct ext2_inode_large *inode,
> return (void *) (IFIRST(header) + entry->e_value_offs);
> }
>
> +static errcode_t ext2fs_inline_data_destory_data(ext2_filsys fs, ext2_ino_t ino,
> + struct ext2_inode_large *inode,
> + struct inline_data *data)
> +{
> + struct ext2_ext_attr_ibody_header *header;
> + struct ext2_ext_attr_search s = {
> + .not_found = ENODATA,
> + };
> + struct ext2_ext_attr_info i = {
> + .name_index = EXT4_EXT_ATTR_INDEX_SYSTEM,
> + .name = EXT4_EXT_ATTR_SYSTEM_DATA,
> + .value = "",
> + .value_len = 0,
> + };
> + errcode_t retval;
> +
> + if (!data->inline_off)
> + return 0;
> +
> + if (inode->i_extra_isize > (EXT2_INODE_SIZE(fs->super) -
> + EXT2_GOOD_OLD_INODE_SIZE))
> + return EXT2_ET_BAD_EXTRA_SIZE;
> +
> + header = IHDR(inode);
> + if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
> + return EXT2_ET_BAD_EXT_ATTR_MAGIC;
> +
> + retval = ext2fs_ext_attr_ibody_find(fs, inode, &i, &s);
> + if (retval)
> + return retval;
> +
> + if (!s.not_found) {
> + retval = ext2fs_ext_attr_set_entry(&i, &s);
> + if (retval)
> + return retval;
> + }
> +
> + memset((void *)inode->i_block, 0, EXT4_MIN_INLINE_DATA_SIZE);
> +
> + return 0;
> +}
> +
> int ext2fs_inode_has_inline_data(ext2_filsys fs, ext2_ino_t ino)
> {
> struct ext2_inode inode;
> @@ -107,6 +157,83 @@ out:
> return size;
> }
>
> +static void ext2fs_update_final_de(ext2_filsys fs, char *de_buf,
> + int old_size, int new_size)
What does this update? I think it changes the last dirent's rec_len so that it
covers the rest of the (new) block, but a comment would be helpful.
> +{
> + struct ext2_dir_entry *de, *prev_de;
> + char *limit;
> + unsigned int de_len;
> +
> + de = (struct ext2_dir_entry *)de_buf;
> + if (old_size) {
> + limit = de_buf + old_size;
> + do {
> + prev_de = de;
> + ext2fs_get_rec_len(fs, de, &de_len);
> + de_buf += de_len;
> + de = (struct ext2_dir_entry *)de_buf;
> + } while (de_buf < limit);
> +
> + ext2fs_set_rec_len(fs, de_len + new_size - old_size,
> + prev_de);
> + } else {
> + de->inode = 0;
> + ext2fs_set_rec_len(fs, new_size, de);
> + }
> +}
> +
> +static void ext2fs_inline_data_finish_convert(ext2_filsys fs, ext2_ino_t ino,
> + char *target, char *buf,
> + int inline_size)
> +{
> + struct ext2_dir_entry *de;
> + struct ext2_dir_entry_tail *t;
> + int header_size = 0;
> + int csum_size = 0;
> + int filetype = 0;
> +
> + if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
> + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
> + csum_size = sizeof(struct ext2_dir_entry_tail);
> +
> + /* First create '.' and '..' */
> + if (fs->super->s_feature_incompat &
> + EXT2_FEATURE_INCOMPAT_FILETYPE)
> + filetype = EXT2_FT_DIR << 8;
> +
> + de = (struct ext2_dir_entry *)target;
> + de->inode = ino;
> + de->name_len = 1 | filetype;
> + de->name[0] = '.';
> + de->name[1] = '\0';
> + de->rec_len = EXT2_DIR_REC_LEN(1);
> +
> + de = (struct ext2_dir_entry *)(target + de->rec_len);
> + de->rec_len = EXT2_DIR_REC_LEN(2);
> + de->inode = ((struct ext2_dir_entry *)buf)->inode;
> + de->name_len = 2 | filetype;
> + de->name[0] = '.';
> + de->name[1] = '.';
> + de->name[2] = '\0';
> +
> + de = (struct ext2_dir_entry *)(target +
> + EXT2_DIR_REC_LEN(1) +
> + EXT2_DIR_REC_LEN(2));
> + header_size = (char *)de - (char *)target;
> +
> + memcpy((void *)de, buf + EXT4_INLINE_DATA_DOTDOT_SIZE,
> + inline_size - EXT4_INLINE_DATA_DOTDOT_SIZE);
> +
> + ext2fs_update_final_de(fs, target,
> + inline_size - EXT4_INLINE_DATA_DOTDOT_SIZE + header_size,
> + fs->blocksize - csum_size);
> +
> + if (csum_size) {
> + t = EXT2_DIRENT_TAIL(target, fs->blocksize);
> + ext2fs_initialize_dirent_tail(fs, t);
> + }
> +}
> +
> errcode_t ext2fs_inline_data_iterate(ext2_filsys fs,
> ext2_ino_t ino,
> int flags,
> @@ -188,3 +315,156 @@ out:
> ext2fs_free_mem(&inode);
> return retval & BLOCK_ERROR ? ctx->errcode : 0;
> }
> +
> +errcode_t ext2fs_inline_data_convert(ext2_filsys fs,
> + ext2_ino_t ino,
> + void *priv_data)
> +{
> + struct expand_dir_struct *es;
> + struct ext2_inode_large *inode;
> + struct inline_data data;
> + ext2_extent_handle_t handle;
> + errcode_t retval;
> + blk64_t blk;
> + char *backup_buf;
> + char *blk_buf;
> + unsigned int inline_size;
> +
> + EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
> +
> + es = (struct expand_dir_struct *)priv_data;
> + retval = ext2fs_get_mem(EXT2_INODE_SIZE(fs->super), &inode);
> + if (retval)
> + return retval;
> +
> + retval = ext2fs_read_inode_full(fs, ino, (void *)inode,
> + EXT2_INODE_SIZE(fs->super));
> + if (retval)
> + goto out;
> +
> + retval = ext2fs_inline_data_find(fs, inode, &data);
> + if (retval)
> + goto out;
> +
> + inline_size = data.inline_size;
> + retval = ext2fs_get_mem(inline_size, &backup_buf);
> + if (retval)
> + goto out;
> +
> + memcpy(backup_buf, (void *)inode->i_block, EXT4_MIN_INLINE_DATA_SIZE);
> + if (inline_size > EXT4_MIN_INLINE_DATA_SIZE)
> + memcpy(backup_buf + EXT4_MIN_INLINE_DATA_SIZE,
> + ext2fs_get_inline_xattr_pos(inode, &data),
> + inline_size - EXT4_MIN_INLINE_DATA_SIZE);
> +
> + /* clear the entry and the flag in dir now */
> + retval = ext2fs_inline_data_destory_data(fs, ino, inode, &data);
> + if (retval)
> + goto out1;
> +
> + if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS) {
> + if (LINUX_S_ISDIR(inode->i_mode) ||
> + LINUX_S_ISREG(inode->i_mode) ||
> + LINUX_S_ISLNK(inode->i_mode))
> + inode->i_flags |= EXT4_EXTENTS_FL;
> + }
> +
> + inode->i_flags &= ~EXT4_INLINE_DATA_FL;
> +
> + retval = ext2fs_new_block2(fs, 0, 0, &blk);
> + if (retval)
> + goto out1;
> +
> + ext2fs_iblk_set(fs, (void*)inode, 1);
> + if (!(fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS))
This should test the iflag. Or, maybe it should use ext2fs_bmap2()?
> + inode->i_block[0] = blk;
> + inode->i_size = fs->blocksize;
> +
> + retval = ext2fs_get_mem(fs->blocksize, &blk_buf);
> + if (retval)
> + goto out1;
> +
> + memset(blk_buf, 0, sizeof(fs->blocksize));
> + if (LINUX_S_ISDIR(inode->i_mode)) {
> + /* set the final dir entry to cover the whole block */
> + ext2fs_inline_data_finish_convert(fs, ino, blk_buf, backup_buf,
> + inline_size);
> + } else {
> + memcpy(blk_buf, backup_buf, inline_size);
> + }
> +
> + retval = ext2fs_write_dir_block4(fs, blk, blk_buf, 0, ino);
This should only ever be called against directory blocks. If this is a regular
file or a symlink, it'll probably complain about not finding the checksum
space.
> + if (retval)
> + goto out2;
> + retval = ext2fs_write_inode_full(fs, ino, (void *)inode,
> + EXT2_INODE_SIZE(fs->super));
> + if (retval)
> + goto out2;
> +
> + if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS) {
> + retval = ext2fs_extent_open2(fs, ino, (void *)inode, &handle);
ext2fs_bmap2()?
> + if (retval)
> + goto out2;
> + retval = ext2fs_extent_set_bmap(handle, 0, blk, 0);
> + ext2fs_extent_free(handle);
> + if (retval)
> + goto out2;
> + }
> +
> + ext2fs_block_alloc_stats2(fs, blk, +1);
> +
> +out2:
> + ext2fs_free_mem(&blk_buf);
> +out1:
> + ext2fs_free_mem(&backup_buf);
> +out:
> + ext2fs_free_mem(&inode);
> +
> + if (retval) {
> + es->err = retval;
> + } else {
> + es->done = 1;
> + es->newblocks++;
> + es->goal = blk;
> + }
> + return retval;
> +}
> +
> +errcode_t ext2fs_inline_data_create(ext2_filsys fs,
> + struct ext2_inode_large *inode,
> + unsigned int len)
> +{
> + struct ext2_ext_attr_ibody_header *header;
> + struct ext2_ext_attr_search s = {
> + .not_found = ENODATA,
> + };
> + struct ext2_ext_attr_info i = {
> + .name_index = EXT4_EXT_ATTR_INDEX_SYSTEM,
> + .name = EXT4_EXT_ATTR_SYSTEM_DATA,
> + };
> + void *buf;
> + errcode_t retval;
> +
> + if (len > EXT4_MIN_INLINE_DATA_SIZE) {
> + i.value = EXT2_ZERO_EXT_ATTR_VALUE;
> + i.value_len = len - EXT4_MIN_INLINE_DATA_SIZE;
> + } else {
> + i.value = "";
> + i.value_len = 0;
> + }
> +
> + retval = ext2fs_ext_attr_ibody_find(fs, inode, &i, &s);
> + if (retval)
> + return retval;
> + retval = ext2fs_ext_attr_set_entry(&i, &s);
> + if (retval)
> + return retval;
> +
> + header = IHDR(inode);
> + if (!EXT2_EXT_IS_LAST_ENTRY(s.first))
> + header->h_magic = EXT2_EXT_ATTR_MAGIC;
> + else
> + header->h_magic = 0;
> +
> + return 0;
> +}
> diff --git a/lib/ext2fs/mkdir.c b/lib/ext2fs/mkdir.c
> index 4a85439..a6aeb0d 100644
> --- a/lib/ext2fs/mkdir.c
> +++ b/lib/ext2fs/mkdir.c
> @@ -36,11 +36,13 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
> {
> ext2_extent_handle_t handle;
> errcode_t retval;
> - struct ext2_inode parent_inode, inode;
> + struct ext2_inode parent_inode, *inode = NULL;
> + struct ext2_inode_large *large_inode = NULL;
> ext2_ino_t ino = inum;
> ext2_ino_t scratch_ino;
> blk64_t blk;
> char *block = 0;
> + int inline_data = 0;
>
> EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
>
> @@ -55,16 +57,38 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
> }
>
> /*
> + * We try to create a new directory with inline data if this feature
> + * is enabled. Here we don't try to do this if ino < first_ino or
> + * the directory name is 'lost+found'.
> + */
> + if (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_INLINE_DATA &&
> + ino >= EXT2_FIRST_INO(fs->super) && strcmp("lost+found", name) != 0)
> + inline_data = 1;
What if I mkdir -p /mnt/sub/dir/lost+found ?
> +
> + /*
> * Allocate a data block for the directory
> */
> - retval = ext2fs_new_block2(fs, 0, 0, &blk);
> + if (!inline_data) {
> + retval = ext2fs_new_block2(fs, 0, 0, &blk);
> + if (retval)
> + goto cleanup;
> + }
> +
> + /*
> + * Allocate a new inode structuure
> + */
> + retval = ext2fs_get_memzero(EXT2_INODE_SIZE(fs->super), &large_inode);
> if (retval)
> goto cleanup;
> + inode = (struct ext2_inode *) large_inode;
>
> /*
> * Create a scratch template for the directory
> */
> - retval = ext2fs_new_dir_block(fs, ino, parent, &block);
> + if (inline_data)
> + retval = ext2fs_new_dir_inline_data(fs, ino, parent, inode);
> + else
> + retval = ext2fs_new_dir_block(fs, ino, parent, &block);
> if (retval)
> goto cleanup;
>
> @@ -81,37 +105,61 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
> /*
> * Create the inode structure....
> */
> - memset(&inode, 0, sizeof(struct ext2_inode));
> - inode.i_mode = LINUX_S_IFDIR | (0777 & ~fs->umask);
> - inode.i_uid = inode.i_gid = 0;
> - ext2fs_iblk_set(fs, &inode, 1);
> - if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS)
> - inode.i_flags |= EXT4_EXTENTS_FL;
> + inode->i_mode = LINUX_S_IFDIR | (0777 & ~fs->umask);
> + inode->i_uid = inode->i_gid = 0;
> + ext2fs_iblk_set(fs, inode, 1);
Just to confirm, i_blocks should be nonzero for inline data?
> + if (inline_data)
> + inode->i_flags |= EXT4_INLINE_DATA_FL;
> + else if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS)
> + inode->i_flags |= EXT4_EXTENTS_FL;
> else
> - inode.i_block[0] = blk;
> - inode.i_links_count = 2;
> - inode.i_size = fs->blocksize;
> + inode->i_block[0] = blk;
> + inode->i_links_count = 2;
>
> /*
> * Write out the inode and inode data block. The inode generation
> * number is assigned by write_new_inode, which means that the call
> * to write_dir_block must come after that.
> + *
> + * If we try to create an new inode with inline data, we should call
> + * ext2fs_write_inode_full to avoid to initialize extra part.
> */
> - retval = ext2fs_write_new_inode(fs, ino, &inode);
> - if (retval)
> - goto cleanup;
> - retval = ext2fs_write_dir_block4(fs, blk, block, 0, ino);
> - if (retval)
> - goto cleanup;
> + if (inline_data) {
> + __u32 t = fs->now ? fs->now : time(NULL);
> +
> + inode->i_size = EXT4_MIN_INLINE_DATA_SIZE;
> + inode->i_blocks = 0;
> + if (!inode->i_ctime)
> + inode->i_ctime = t;
> + if (!inode->i_mtime)
> + inode->i_mtime = t;
> + if (!inode->i_atime)
> + inode->i_atime = t;
> + if (!large_inode->i_crtime)
> + large_inode->i_crtime = t;
> + retval = ext2fs_write_inode_full(fs, ino, inode,
> + EXT2_INODE_SIZE(fs->super));
> + if (retval)
> + goto cleanup;
> + } else {
> + inode->i_size = fs->blocksize;
>
> - if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS) {
> - retval = ext2fs_extent_open2(fs, ino, &inode, &handle);
> + retval = ext2fs_write_new_inode(fs, ino, inode);
> if (retval)
> goto cleanup;
> - retval = ext2fs_extent_set_bmap(handle, 0, blk, 0);
> - ext2fs_extent_free(handle);
> + retval = ext2fs_write_dir_block4(fs, blk, block, 0, ino);
> if (retval)
> goto cleanup;
> +
> + if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS) {
ext2fs_bmap()? Or, test the iflag.
> + retval = ext2fs_extent_open2(fs, ino, inode, &handle);
> + if (retval)
> + goto cleanup;
> + retval = ext2fs_extent_set_bmap(handle, 0, blk, 0);
> + ext2fs_extent_free(handle);
> + if (retval)
> + goto cleanup;
> + }
> }
>
> /*
> @@ -136,6 +184,10 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
> * Update parent inode's counts
> */
> if (parent != ino) {
> + /* Reload parent inode due to inline data */
> + retval = ext2fs_read_inode(fs, parent, &parent_inode);
> + if (retval)
> + goto cleanup;
> parent_inode.i_links_count++;
> retval = ext2fs_write_inode(fs, parent, &parent_inode);
> if (retval)
> @@ -145,14 +197,16 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
> /*
> * Update accounting....
> */
> - ext2fs_block_alloc_stats2(fs, blk, +1);
> + if (!inline_data)
> + ext2fs_block_alloc_stats2(fs, blk, +1);
> ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
>
> cleanup:
> + if (large_inode)
> + ext2fs_free_mem(&large_inode);
> if (block)
> ext2fs_free_mem(&block);
> return retval;
> -
> }
>
>
> diff --git a/lib/ext2fs/newdir.c b/lib/ext2fs/newdir.c
> index 2cd541d..cec99e9 100644
> --- a/lib/ext2fs/newdir.c
> +++ b/lib/ext2fs/newdir.c
> @@ -87,3 +87,36 @@ errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
> *block = buf;
> return 0;
> }
> +
> +/*
> + * Create new directory in inode
> + */
> +errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs,
> + ext2_ino_t dir_ino,
> + ext2_ino_t parent_ino,
> + struct ext2_inode *inode)
> +{
> + struct ext2_inode_large *large_inode;
> + struct ext2_dir_entry *dir = NULL;
> + int inline_size = EXT4_MIN_INLINE_DATA_SIZE;
> + errcode_t retval;
> +
> + EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
> +
> + large_inode = (struct ext2_inode_large *) inode;
> + large_inode->i_extra_isize = sizeof(struct ext2_inode_large) -
> + EXT2_GOOD_OLD_INODE_SIZE;
> + retval = ext2fs_inline_data_create(fs, large_inode, inline_size);
> + if (retval)
> + return retval;
> +
> + dir = (struct ext2_dir_entry *) inode->i_block;
> + dir->inode = parent_ino;
> +
> + dir = (struct ext2_dir_entry *) ((char *) dir +
> + EXT4_INLINE_DATA_DOTDOT_SIZE);
> + dir->inode = 0;
> + dir->rec_len = inline_size - EXT4_INLINE_DATA_DOTDOT_SIZE;
> +
> + return retval;
> +}
> --
> 1.7.9.7
>
> --
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