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-rw-r--r--mkfs/meta.c296
1 files changed, 4 insertions, 292 deletions
diff --git a/mkfs/meta.c b/mkfs/meta.c
index 9c305b1..2d969a3 100644
--- a/mkfs/meta.c
+++ b/mkfs/meta.c
@@ -1,295 +1,7 @@
/* SPDX-License-Identifier: GPL-3.0-or-later */
-#include "meta_writer.h"
#include "mkfs.h"
#include "util.h"
-#include <assert.h>
-#include <endian.h>
-
-static int get_type(tree_node_t *node)
-{
- int type;
-
- switch (node->mode & S_IFMT) {
- case S_IFSOCK: type = SQFS_INODE_SOCKET; break;
- case S_IFIFO: type = SQFS_INODE_FIFO; break;
- case S_IFLNK: type = SQFS_INODE_SLINK; break;
- case S_IFBLK: type = SQFS_INODE_BDEV; break;
- case S_IFCHR: type = SQFS_INODE_CDEV; break;
- case S_IFDIR: type = SQFS_INODE_DIR; break;
- case S_IFREG: type = SQFS_INODE_FILE; break;
- default:
- assert(0);
- }
-
- if (node->xattr != NULL)
- type = SQFS_INODE_EXT_TYPE(type);
-
- return type;
-}
-
-static size_t hard_link_count(tree_node_t *n)
-{
- size_t count;
-
- if (S_ISDIR(n->mode)) {
- count = 2;
-
- for (n = n->data.dir->children; n != NULL; n = n->next)
- ++count;
-
- return count;
- }
-
- return 1;
-}
-
-static int write_inode(sqfs_info_t *info, meta_writer_t *im, meta_writer_t *dm,
- tree_node_t *node)
-{
- dir_index_t *diridx = NULL;
- uint16_t uid_idx, gid_idx;
- file_info_t *fi = NULL;
- dir_info_t *di = NULL;
- uint32_t bs, offset;
- sqfs_inode_t base;
- uint64_t i, block;
- int type;
-
- if (id_table_id_to_index(&info->idtbl, node->uid, &uid_idx))
- return -1;
-
- if (id_table_id_to_index(&info->idtbl, node->gid, &gid_idx))
- return -1;
-
- meta_writer_get_position(im, &block, &offset);
- node->inode_ref = (block << 16) | offset;
-
- type = get_type(node);
-
- if (S_ISDIR(node->mode)) {
- di = node->data.dir;
-
- if (write_dir(dm, di, &diridx))
- return -1;
-
- if ((di->start_block) > 0xFFFFFFFFUL || di->size > 0xFFFF ||
- node->xattr != NULL) {
- type = SQFS_INODE_EXT_DIR;
- } else {
- type = SQFS_INODE_DIR;
- free(diridx);
- diridx = NULL;
- }
- } else if (S_ISREG(node->mode)) {
- fi = node->data.file;
-
- if (fi->startblock > 0xFFFFFFFFUL || fi->size > 0xFFFFFFFFUL ||
- hard_link_count(node) > 1) {
- type = SQFS_INODE_EXT_FILE;
- }
- }
-
- base.type = htole16(type);
- base.mode = htole16(node->mode);
- base.uid_idx = htole16(uid_idx);
- base.gid_idx = htole16(gid_idx);
- base.mod_time = htole32(info->opt.def_mtime);
- base.inode_number = htole32(node->inode_num);
-
- if (meta_writer_append(im, &base, sizeof(base))) {
- free(diridx);
- return -1;
- }
-
- switch (type) {
- case SQFS_INODE_FIFO:
- case SQFS_INODE_SOCKET: {
- sqfs_inode_ipc_t ipc = {
- .nlink = hard_link_count(node),
- };
-
- return meta_writer_append(im, &ipc, sizeof(ipc));
- }
- case SQFS_INODE_EXT_FIFO:
- case SQFS_INODE_EXT_SOCKET: {
- sqfs_inode_ipc_ext_t ipc = {
- .nlink = hard_link_count(node),
- .xattr_idx = htole32(0xFFFFFFFF),
- };
-
- if (node->xattr != NULL)
- ipc.xattr_idx = htole32(node->xattr->index);
-
- return meta_writer_append(im, &ipc, sizeof(ipc));
- }
- case SQFS_INODE_SLINK: {
- sqfs_inode_slink_t slink = {
- .nlink = htole32(hard_link_count(node)),
- .target_size = htole32(strlen(node->data.slink_target)),
- };
-
- if (meta_writer_append(im, &slink, sizeof(slink)))
- return -1;
- if (meta_writer_append(im, node->data.slink_target,
- le32toh(slink.target_size))) {
- return -1;
- }
- break;
- }
- case SQFS_INODE_EXT_SLINK: {
- sqfs_inode_slink_t slink = {
- .nlink = htole32(hard_link_count(node)),
- .target_size = htole32(strlen(node->data.slink_target)),
- };
- uint32_t xattr = htole32(0xFFFFFFFF);
-
- if (node->xattr != NULL)
- xattr = htole32(node->xattr->index);
-
- if (meta_writer_append(im, &slink, sizeof(slink)))
- return -1;
- if (meta_writer_append(im, node->data.slink_target,
- le32toh(slink.target_size))) {
- return -1;
- }
- if (meta_writer_append(im, &xattr, sizeof(xattr)))
- return -1;
- break;
- }
- case SQFS_INODE_BDEV:
- case SQFS_INODE_CDEV: {
- sqfs_inode_dev_t dev = {
- .nlink = htole32(hard_link_count(node)),
- .devno = htole32(node->data.devno),
- };
-
- return meta_writer_append(im, &dev, sizeof(dev));
- }
- case SQFS_INODE_EXT_BDEV:
- case SQFS_INODE_EXT_CDEV: {
- sqfs_inode_dev_ext_t dev = {
- .nlink = htole32(hard_link_count(node)),
- .devno = htole32(node->data.devno),
- .xattr_idx = htole32(0xFFFFFFFF),
- };
-
- if (node->xattr != NULL)
- dev.xattr_idx = htole32(node->xattr->index);
-
- return meta_writer_append(im, &dev, sizeof(dev));
- }
-
- case SQFS_INODE_EXT_FILE: {
- sqfs_inode_file_ext_t ext = {
- .blocks_start = htole64(fi->startblock),
- .file_size = htole64(fi->size),
- .sparse = htole64(0xFFFFFFFFFFFFFFFFUL),
- .nlink = htole32(hard_link_count(node)),
- .fragment_idx = htole32(fi->fragment),
- .fragment_offset = htole32(fi->fragment_offset),
- .xattr_idx = htole32(0xFFFFFFFF),
- };
-
- if (node->xattr != NULL)
- ext.xattr_idx = htole32(node->xattr->index);
-
- if (meta_writer_append(im, &ext, sizeof(ext)))
- return -1;
- goto out_file_blocks;
- }
- case SQFS_INODE_FILE: {
- sqfs_inode_file_t reg = {
- .blocks_start = htole32(fi->startblock),
- .fragment_index = htole32(fi->fragment),
- .fragment_offset = htole32(fi->fragment_offset),
- .file_size = htole32(fi->size),
- };
-
- if (meta_writer_append(im, &reg, sizeof(reg)))
- return -1;
- goto out_file_blocks;
- }
- case SQFS_INODE_DIR: {
- sqfs_inode_dir_t dir = {
- .start_block = htole32(node->data.dir->start_block),
- .nlink = htole32(hard_link_count(node)),
- .size = htole16(node->data.dir->size),
- .offset = htole16(node->data.dir->block_offset),
- .parent_inode = node->parent ?
- htole32(node->parent->inode_num) : htole32(1),
- };
-
- return meta_writer_append(im, &dir, sizeof(dir));
- }
- case SQFS_INODE_EXT_DIR: {
- sqfs_dir_index_t idx;
- size_t i;
- sqfs_inode_dir_ext_t ext = {
- .nlink = htole32(hard_link_count(node)),
- .size = htole32(node->data.dir->size),
- .start_block = htole32(node->data.dir->start_block),
- .parent_inode = node->parent ?
- htole32(node->parent->inode_num) : htole32(1),
- .inodex_count = htole32(0),
- .offset = htole16(node->data.dir->block_offset),
- .xattr_idx = htole32(0xFFFFFFFF),
- };
-
- if (node->xattr != NULL)
- ext.xattr_idx = htole32(node->xattr->index);
-
- if (meta_writer_append(im, &ext, sizeof(ext))) {
- free(diridx);
- return -1;
- }
-
- /* HACK: truncated index for empty directories */
- if (node->data.dir->size == 0)
- break;
-
- ext.inodex_count = htole32(diridx->num_nodes - 1);
-
- for (i = 0; i < diridx->num_nodes; ++i) {
- idx.start_block = htole32(diridx->idx_nodes[i].block);
-
- idx.index = diridx->idx_nodes[i].offset;
- idx.index -= node->data.dir->block_offset;
- idx.index = htole32(idx.index);
-
- idx.size = strlen(diridx->idx_nodes[i].node->name) - 1;
- idx.size = htole32(idx.size);
-
- if (meta_writer_append(im, &idx, sizeof(idx))) {
- free(diridx);
- return -1;
- }
-
- if (meta_writer_append(im,
- diridx->idx_nodes[i].node->name,
- le32toh(idx.size) + 1)) {
- free(diridx);
- return -1;
- }
- }
-
- free(diridx);
- break;
- }
- default:
- assert(0);
- }
- return 0;
-out_file_blocks:
- for (i = 0; i < fi->size / info->super.block_size; ++i) {
- bs = htole32(fi->blocksizes[i]);
-
- if (meta_writer_append(im, &bs, sizeof(bs)))
- return -1;
- }
- return 0;
-}
-
int sqfs_write_inodes(sqfs_info_t *info)
{
meta_writer_t *im, *dm;
@@ -317,10 +29,10 @@ int sqfs_write_inodes(sqfs_info_t *info)
if (dm == NULL)
goto fail_im;
- for (i = 0; i < info->fs.inode_tbl_size; ++i) {
- if (info->fs.inode_table[i] != NULL) {
- if (write_inode(info, im, dm, info->fs.inode_table[i]))
- goto fail;
+ for (i = 2; i < info->fs.inode_tbl_size; ++i) {
+ if (write_inode(&info->fs, &info->idtbl, im, dm,
+ info->fs.inode_table[i])) {
+ goto fail;
}
}
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