diff options
Diffstat (limited to 'lib/common/serialize_fstree.c')
| -rw-r--r-- | lib/common/serialize_fstree.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/lib/common/serialize_fstree.c b/lib/common/serialize_fstree.c deleted file mode 100644 index c69f0ea..0000000 --- a/lib/common/serialize_fstree.c +++ /dev/null @@ -1,199 +0,0 @@ -/* SPDX-License-Identifier: GPL-3.0-or-later */ -/* - * serialize_fstree.c - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#include "common.h" - -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include <stdio.h> - -static sqfs_inode_generic_t *tree_node_to_inode(tree_node_t *node) -{ - sqfs_inode_generic_t *inode; - size_t extra = 0; - - if (S_ISLNK(node->mode)) - extra = strlen(node->data.target); - - inode = calloc(1, sizeof(*inode) + extra); - if (inode == NULL) { - perror("creating inode"); - return NULL; - } - - switch (node->mode & S_IFMT) { - case S_IFSOCK: - inode->base.type = SQFS_INODE_SOCKET; - inode->data.ipc.nlink = node->link_count; - break; - case S_IFIFO: - inode->base.type = SQFS_INODE_FIFO; - inode->data.ipc.nlink = node->link_count; - break; - case S_IFLNK: - inode->base.type = SQFS_INODE_SLINK; - inode->data.slink.nlink = node->link_count; - inode->data.slink.target_size = extra; - memcpy(inode->extra, node->data.target, extra); - break; - case S_IFBLK: - inode->base.type = SQFS_INODE_BDEV; - inode->data.dev.nlink = node->link_count; - inode->data.dev.devno = node->data.devno; - break; - case S_IFCHR: - inode->base.type = SQFS_INODE_CDEV; - inode->data.dev.nlink = node->link_count; - inode->data.dev.devno = node->data.devno; - break; - default: - assert(0); - } - - return inode; -} - -static sqfs_inode_generic_t *write_dir_entries(const char *filename, - sqfs_dir_writer_t *dirw, - tree_node_t *node) -{ - sqfs_u32 xattr, parent_inode; - sqfs_inode_generic_t *inode; - tree_node_t *it, *tgt; - int ret; - - ret = sqfs_dir_writer_begin(dirw, 0); - if (ret) - goto fail; - - for (it = node->data.dir.children; it != NULL; it = it->next) { - if (it->mode == FSTREE_MODE_HARD_LINK_RESOLVED) { - tgt = it->data.target_node; - } else { - tgt = it; - } - - ret = sqfs_dir_writer_add_entry(dirw, it->name, tgt->inode_num, - tgt->inode_ref, tgt->mode); - if (ret) - goto fail; - } - - ret = sqfs_dir_writer_end(dirw); - if (ret) - goto fail; - - xattr = node->xattr_idx; - parent_inode = (node->parent == NULL) ? 0 : node->parent->inode_num; - - inode = sqfs_dir_writer_create_inode(dirw, 0, xattr, parent_inode); - if (inode == NULL) { - ret = SQFS_ERROR_ALLOC; - goto fail; - } - - if (inode->base.type == SQFS_INODE_DIR) { - inode->data.dir.nlink = node->link_count; - } else { - inode->data.dir_ext.nlink = node->link_count; - } - - return inode; -fail: - sqfs_perror(filename, "recoding directory entries", ret); - return NULL; -} - -static int serialize_tree_node(const char *filename, sqfs_writer_t *wr, - tree_node_t *n) -{ - sqfs_inode_generic_t *inode; - sqfs_u32 offset; - sqfs_u64 block; - int ret; - - if (S_ISDIR(n->mode)) { - inode = write_dir_entries(filename, wr->dirwr, n); - ret = SQFS_ERROR_INTERNAL; - } else if (S_ISREG(n->mode)) { - inode = n->data.file.user_ptr; - n->data.file.user_ptr = NULL; - ret = SQFS_ERROR_INTERNAL; - - if (inode->base.type == SQFS_INODE_FILE && n->link_count > 1) { - sqfs_inode_make_extended(inode); - inode->data.file_ext.nlink = n->link_count; - } else { - inode->data.file_ext.nlink = n->link_count; - } - } else { - inode = tree_node_to_inode(n); - ret = SQFS_ERROR_ALLOC; - } - - if (inode == NULL) - return ret; - - inode->base.mode = n->mode; - inode->base.mod_time = n->mod_time; - inode->base.inode_number = n->inode_num; - - sqfs_inode_set_xattr_index(inode, n->xattr_idx); - - ret = sqfs_id_table_id_to_index(wr->idtbl, n->uid, - &inode->base.uid_idx); - if (ret) - goto out; - - ret = sqfs_id_table_id_to_index(wr->idtbl, n->gid, - &inode->base.gid_idx); - if (ret) - goto out; - - sqfs_meta_writer_get_position(wr->im, &block, &offset); - n->inode_ref = (block << 16) | offset; - - ret = sqfs_meta_writer_write_inode(wr->im, inode); -out: - free(inode); - return ret; -} - -int sqfs_serialize_fstree(const char *filename, sqfs_writer_t *wr) -{ - size_t i; - int ret; - - wr->super.inode_table_start = wr->outfile->get_size(wr->outfile); - - for (i = 0; i < wr->fs.unique_inode_count; ++i) { - ret = serialize_tree_node(filename, wr, wr->fs.inodes[i]); - if (ret) - goto out; - } - - ret = sqfs_meta_writer_flush(wr->im); - if (ret) - goto out; - - ret = sqfs_meta_writer_flush(wr->dm); - if (ret) - goto out; - - wr->super.root_inode_ref = wr->fs.root->inode_ref; - wr->super.directory_table_start = wr->outfile->get_size(wr->outfile); - - ret = sqfs_meta_write_write_to_file(wr->dm); - if (ret) - goto out; - - ret = 0; -out: - if (ret) - sqfs_perror(filename, "storing filesystem tree", ret); - return ret; -} |