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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-08-31 16:59:50 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-08-31 17:17:23 +0200
commit2ac43d981859bda063e7067371c1cf246c7f81b0 (patch)
treeca289d2b708a60d13e300cc36ae47839389d26cf /lib/sqfs/tree_node_from_inode.c
parent9b3d958fb7c37855a63ed75707281c61dc1d44c4 (diff)
Split libsquashfs.a into low seperate libraries
The idea is to make libsquashfs.a independend of libfstree.a, so it becomes a general purpose squashfs manipulation library. All the high level glue code for libfstree.a and utilites that are overly specific with to tools are moved to a seperate librarby. This commit makes the first step by moving the stuff with dependencies on libfstree to a seperate library. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/sqfs/tree_node_from_inode.c')
-rw-r--r--lib/sqfs/tree_node_from_inode.c167
1 files changed, 0 insertions, 167 deletions
diff --git a/lib/sqfs/tree_node_from_inode.c b/lib/sqfs/tree_node_from_inode.c
deleted file mode 100644
index 582399c..0000000
--- a/lib/sqfs/tree_node_from_inode.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * tree_node_from_inode.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-
-#include "highlevel.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-
-static size_t compute_size(sqfs_inode_generic_t *inode, const char *name,
- size_t block_size)
-{
- size_t size = sizeof(tree_node_t) + strlen(name) + 1;
- size_t block_count = 0;
-
- switch (inode->base.type) {
- case SQFS_INODE_DIR:
- case SQFS_INODE_EXT_DIR:
- size += sizeof(dir_info_t);
- break;
- case SQFS_INODE_FILE:
- size += sizeof(file_info_t);
- block_count = inode->data.file.file_size / block_size;
- if ((inode->data.file.file_size % block_size) != 0)
- ++block_count;
- break;
- case SQFS_INODE_EXT_FILE:
- size += sizeof(file_info_t);
- block_count = inode->data.file_ext.file_size / block_size;
- if ((inode->data.file_ext.file_size % block_size) != 0)
- ++block_count;
- break;
- case SQFS_INODE_SLINK:
- case SQFS_INODE_EXT_SLINK:
- size += strlen(inode->slink_target) + 1;
- break;
- default:
- break;
- }
-
- return size + block_count * sizeof(((file_info_t *)0)->blocks[0]);
-}
-
-static void copy_block_sizes(sqfs_inode_generic_t *inode, tree_node_t *out,
- size_t block_size)
-{
- size_t i, block_count = out->data.file->size / block_size;
-
- if ((out->data.file->size % block_size) != 0) {
- if (out->data.file->fragment == 0xFFFFFFFF ||
- out->data.file->fragment_offset == 0xFFFFFFFF) {
- ++block_count;
- } else {
- out->data.file->flags |= FILE_FLAG_HAS_FRAGMENT;
- }
- }
-
- out->name += block_count * sizeof(out->data.file->blocks[0]);
-
- for (i = 0; i < block_count; ++i)
- out->data.file->blocks[i].size = inode->block_sizes[i];
-}
-
-tree_node_t *tree_node_from_inode(sqfs_inode_generic_t *inode,
- const id_table_t *idtbl,
- const char *name,
- size_t block_size)
-{
- tree_node_t *out;
-
- if (inode->base.uid_idx >= idtbl->num_ids) {
- fputs("converting inode to fs tree node: UID out of range\n",
- stderr);
- return NULL;
- }
-
- if (inode->base.gid_idx >= idtbl->num_ids) {
- fputs("converting inode to fs tree node: GID out of range\n",
- stderr);
- return NULL;
- }
-
- out = calloc(1, compute_size(inode, name, block_size));
- if (out == NULL) {
- perror("converting inode to fs tree node");
- return NULL;
- }
-
- out->uid = idtbl->ids[inode->base.uid_idx];
- out->gid = idtbl->ids[inode->base.gid_idx];
- out->mode = inode->base.mode;
- out->inode_num = inode->base.inode_number;
- out->mod_time = inode->base.mod_time;
- out->name = (char *)out->payload;
-
- switch (inode->base.type) {
- case SQFS_INODE_DIR:
- out->data.dir = (dir_info_t *)out->payload;
- out->name += sizeof(dir_info_t);
-
- out->data.dir->size = inode->data.dir.size;
- out->data.dir->start_block = inode->data.dir.start_block;
- out->data.dir->block_offset = inode->data.dir.offset;
- break;
- case SQFS_INODE_EXT_DIR:
- out->data.dir = (dir_info_t *)out->payload;
- out->name += sizeof(dir_info_t);
-
- out->data.dir->size = inode->data.dir_ext.size;
- out->data.dir->start_block = inode->data.dir_ext.start_block;
- out->data.dir->block_offset = inode->data.dir_ext.offset;
- break;
- case SQFS_INODE_FILE:
- out->data.file = (file_info_t *)out->payload;
- out->name += sizeof(file_info_t);
-
- out->data.file->size = inode->data.file.file_size;
- out->data.file->startblock = inode->data.file.blocks_start;
- out->data.file->fragment = inode->data.file.fragment_index;
- out->data.file->fragment_offset =
- inode->data.file.fragment_offset;
-
- copy_block_sizes(inode, out, block_size);
- break;
- case SQFS_INODE_EXT_FILE:
- out->data.file = (file_info_t *)out->payload;
- out->name += sizeof(file_info_t);
-
- out->data.file->size = inode->data.file_ext.file_size;
- out->data.file->sparse = inode->data.file_ext.sparse;
- out->data.file->startblock = inode->data.file_ext.blocks_start;
- out->data.file->fragment = inode->data.file_ext.fragment_idx;
- out->data.file->fragment_offset =
- inode->data.file_ext.fragment_offset;
-
- copy_block_sizes(inode, out, block_size);
- break;
- case SQFS_INODE_SLINK:
- case SQFS_INODE_EXT_SLINK:
- out->data.slink_target = (char *)out->payload;
- strcpy(out->data.slink_target, inode->slink_target);
-
- out->name = (char *)out->payload +
- strlen(inode->slink_target) + 1;
- break;
- case SQFS_INODE_BDEV:
- case SQFS_INODE_CDEV:
- out->name = (char *)out->payload;
- out->data.devno = inode->data.dev.devno;
- break;
- case SQFS_INODE_EXT_BDEV:
- case SQFS_INODE_EXT_CDEV:
- out->name = (char *)out->payload;
- out->data.devno = inode->data.dev_ext.devno;
- break;
- default:
- break;
- }
-
- strcpy(out->name, name);
- return out;
-}