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Diffstat (limited to 'lib/sqfs/block_processor/common.c')
-rw-r--r--lib/sqfs/block_processor/common.c421
1 files changed, 0 insertions, 421 deletions
diff --git a/lib/sqfs/block_processor/common.c b/lib/sqfs/block_processor/common.c
deleted file mode 100644
index 6a0015b..0000000
--- a/lib/sqfs/block_processor/common.c
+++ /dev/null
@@ -1,421 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * common.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#define SQFS_BUILDING_DLL
-#include "internal.h"
-
-static int set_block_size(sqfs_inode_generic_t **inode,
- sqfs_u32 index, sqfs_u32 size)
-{
- size_t min_size = (index + 1) * sizeof(sqfs_u32);
- size_t avail = (*inode)->payload_bytes_available;
- sqfs_inode_generic_t *new;
- size_t newsz;
-
- if (avail < min_size) {
- newsz = avail ? avail : (sizeof(sqfs_u32) * 4);
- while (newsz < min_size)
- newsz *= 2;
-
- if (SZ_ADD_OV(newsz, sizeof(**inode), &newsz))
- return SQFS_ERROR_OVERFLOW;
-
- if (sizeof(size_t) > sizeof(sqfs_u32)) {
- if ((newsz - sizeof(**inode)) > 0x0FFFFFFFFUL)
- return SQFS_ERROR_OVERFLOW;
- }
-
- new = realloc((*inode), newsz);
- if (new == NULL)
- return SQFS_ERROR_ALLOC;
-
- (*inode) = new;
- (*inode)->payload_bytes_available = newsz - sizeof(**inode);
- }
-
- (*inode)->extra[index] = size;
-
- if (min_size >= (*inode)->payload_bytes_used)
- (*inode)->payload_bytes_used = min_size;
-
- return 0;
-}
-
-static void release_old_block(sqfs_block_processor_t *proc, sqfs_block_t *blk)
-{
- blk->next = proc->free_list;
- proc->free_list = blk;
-}
-
-int process_completed_block(sqfs_block_processor_t *proc, sqfs_block_t *blk)
-{
- sqfs_u64 location;
- sqfs_u32 size;
- int err;
-
- err = proc->wr->write_data_block(proc->wr, blk->user, blk->size,
- blk->checksum,
- blk->flags & ~BLK_FLAG_INTERNAL,
- blk->data, &location);
- if (err)
- goto out;
-
- proc->stats.output_bytes_generated += blk->size;
-
- if (blk->flags & SQFS_BLK_IS_SPARSE) {
- if (blk->inode != NULL) {
- sqfs_inode_make_extended(*(blk->inode));
- (*(blk->inode))->data.file_ext.sparse += blk->size;
-
- err = set_block_size(blk->inode, blk->index, 0);
- if (err)
- goto out;
- }
- proc->stats.sparse_block_count += 1;
- } else if (blk->size != 0) {
- size = blk->size;
- if (!(blk->flags & SQFS_BLK_IS_COMPRESSED))
- size |= 1 << 24;
-
- if (blk->flags & SQFS_BLK_FRAGMENT_BLOCK) {
- if (proc->frag_tbl != NULL) {
- err = sqfs_frag_table_set(proc->frag_tbl,
- blk->index, location,
- size);
- if (err)
- goto out;
- }
- proc->stats.frag_block_count += 1;
- } else {
- if (blk->inode != NULL) {
- err = set_block_size(blk->inode, blk->index,
- size);
- if (err)
- goto out;
- }
- proc->stats.data_block_count += 1;
- }
- }
-
- if (blk->flags & SQFS_BLK_LAST_BLOCK && blk->inode != NULL)
- sqfs_inode_set_file_block_start(*(blk->inode), location);
-out:
- release_old_block(proc, blk);
- return err;
-}
-
-static bool is_zero_block(unsigned char *ptr, size_t size)
-{
- return ptr[0] == 0 && memcmp(ptr, ptr + 1, size - 1) == 0;
-}
-
-static int process_block(void *userptr, void *workitem)
-{
- sqfs_compressor_t *cmp = ((worker_data_t *)userptr)->cmp;
- sqfs_u8 *scratch = ((worker_data_t *)userptr)->scratch;
- size_t scratch_size = ((worker_data_t *)userptr)->scratch_size;
- sqfs_block_t *block = workitem;
- sqfs_s32 ret;
-
- if (block->size == 0)
- return 0;
-
- if (!(block->flags & SQFS_BLK_IGNORE_SPARSE) &&
- is_zero_block(block->data, block->size)) {
- block->flags |= SQFS_BLK_IS_SPARSE;
- return 0;
- }
-
- if (block->flags & SQFS_BLK_DONT_HASH) {
- block->checksum = 0;
- } else {
- block->checksum = xxh32(block->data, block->size);
- }
-
- if (block->flags & (SQFS_BLK_IS_FRAGMENT | SQFS_BLK_DONT_COMPRESS))
- return 0;
-
- ret = cmp->do_block(cmp, block->data, block->size,
- scratch, scratch_size);
- if (ret < 0)
- return ret;
-
- if (ret > 0) {
- memcpy(block->data, scratch, ret);
- block->size = ret;
- block->flags |= SQFS_BLK_IS_COMPRESSED;
- }
- return 0;
-}
-
-int process_completed_fragment(sqfs_block_processor_t *proc,
- sqfs_block_t *frag,
- sqfs_block_t **blk_out)
-{
- chunk_info_t *chunk, search;
- struct hash_entry *entry;
- sqfs_u32 index, offset;
- size_t size;
- int err;
-
- if (frag->flags & SQFS_BLK_IS_SPARSE) {
- if (frag->inode != NULL) {
- sqfs_inode_make_extended(*(frag->inode));
- set_block_size(frag->inode, frag->index, 0);
- (*(frag->inode))->data.file_ext.sparse += frag->size;
- }
- proc->stats.sparse_block_count += 1;
- release_old_block(proc, frag);
- return 0;
- }
-
- proc->stats.total_frag_count += 1;
-
- if (!(frag->flags & SQFS_BLK_DONT_DEDUPLICATE)) {
- search.hash = frag->checksum;
- search.size = frag->size;
-
- entry = hash_table_search_pre_hashed(proc->frag_ht,
- search.hash, &search);
-
- if (entry != NULL) {
- if (frag->inode != NULL) {
- chunk = entry->data;
- sqfs_inode_set_frag_location(*(frag->inode),
- chunk->index,
- chunk->offset);
- }
- release_old_block(proc, frag);
- return 0;
- }
- }
-
- if (proc->frag_block != NULL) {
- size = proc->frag_block->size + frag->size;
-
- if (size > proc->max_block_size) {
- *blk_out = proc->frag_block;
- proc->frag_block = NULL;
- }
- }
-
- if (proc->frag_block == NULL) {
- if (proc->frag_tbl == NULL) {
- index = 0;
- } else {
- err = sqfs_frag_table_append(proc->frag_tbl,
- 0, 0, &index);
- if (err)
- goto fail;
- }
-
- offset = 0;
- proc->frag_block = frag;
- proc->frag_block->index = index;
- proc->frag_block->flags &= SQFS_BLK_DONT_COMPRESS;
- proc->frag_block->flags |= SQFS_BLK_FRAGMENT_BLOCK;
- } else {
- index = proc->frag_block->index;
- offset = proc->frag_block->size;
-
- memcpy(proc->frag_block->data + proc->frag_block->size,
- frag->data, frag->size);
-
- proc->frag_block->size += frag->size;
- proc->frag_block->flags |=
- (frag->flags & SQFS_BLK_DONT_COMPRESS);
- release_old_block(proc, frag);
- }
-
- if (proc->frag_tbl != NULL) {
- err = SQFS_ERROR_ALLOC;
- chunk = calloc(1, sizeof(*chunk));
- if (chunk == NULL)
- goto fail_outblk;
-
- chunk->index = index;
- chunk->offset = offset;
- chunk->size = frag->size;
- chunk->hash = frag->checksum;
-
- entry = hash_table_insert_pre_hashed(proc->frag_ht, chunk->hash,
- chunk, chunk);
-
- if (entry == NULL) {
- free(chunk);
- goto fail_outblk;
- }
- }
-
- if (frag->inode != NULL)
- sqfs_inode_set_frag_location(*(frag->inode), index, offset);
-
- proc->stats.actual_frag_count += 1;
- return 0;
-fail:
- release_old_block(proc, frag);
-fail_outblk:
- if (*blk_out != NULL) {
- release_old_block(proc, *blk_out);
- *blk_out = NULL;
- }
- return err;
-}
-
-static uint32_t chunk_info_hash(void *user, const void *key)
-{
- const chunk_info_t *chunk = key;
- (void)user;
- return chunk->hash;
-}
-
-static bool chunk_info_equals(void *user, const void *k, const void *c)
-{
- const chunk_info_t *key = k, *cmp = c;
- (void)user;
- return key->size == cmp->size && key->hash == cmp->hash;
-}
-
-static void ht_delete_function(struct hash_entry *entry)
-{
- free(entry->data);
-}
-
-static void block_processor_destroy(sqfs_object_t *base)
-{
- sqfs_block_processor_t *proc = (sqfs_block_processor_t *)base;
- sqfs_block_t *it;
-
- if (proc->frag_block != NULL)
- release_old_block(proc, proc->frag_block);
-
- free(proc->blk_current);
-
- while (proc->free_list != NULL) {
- it = proc->free_list;
- proc->free_list = it->next;
- free(it);
- }
-
- hash_table_destroy(proc->frag_ht, ht_delete_function);
-
- /* XXX: shut down the pool first before cleaning up the worker data */
- proc->pool->destroy(proc->pool);
-
- while (proc->workers != NULL) {
- worker_data_t *worker = proc->workers;
- proc->workers = worker->next;
-
- sqfs_destroy(worker->cmp);
- free(worker);
- }
-
- free(proc);
-}
-
-int sqfs_block_processor_create_ex(const sqfs_block_processor_desc_t *desc,
- sqfs_block_processor_t **out)
-{
- sqfs_block_processor_t *proc;
- size_t i, count;
- int ret;
-
- if (desc->size != sizeof(sqfs_block_processor_desc_t))
- return SQFS_ERROR_ARG_INVALID;
-
- proc = calloc(1, sizeof(*proc));
- if (proc == NULL)
- return SQFS_ERROR_ALLOC;
-
- proc->max_backlog = desc->max_backlog;
- proc->max_block_size = desc->max_block_size;
- proc->frag_tbl = desc->tbl;
- proc->wr = desc->wr;
- proc->file = desc->file;
- proc->uncmp = desc->uncmp;
- proc->stats.size = sizeof(proc->stats);
- ((sqfs_object_t *)proc)->destroy = block_processor_destroy;
-
- /* create the thread pool */
- proc->pool = thread_pool_create(desc->num_workers, process_block);
- if (proc->pool == NULL) {
- free(proc);
- return SQFS_ERROR_INTERNAL;
- }
-
- /* create the worker compressors & scratch buffer */
- count = proc->pool->get_worker_count(proc->pool);
-
- for (i = 0; i < count; ++i) {
- worker_data_t *worker = alloc_flex(sizeof(*worker), 1,
- desc->max_block_size);
- if (worker == NULL) {
- ret = SQFS_ERROR_ALLOC;
- goto fail_pool;
- }
-
- worker->scratch_size = desc->max_block_size;
- worker->next = proc->workers;
- proc->workers = worker;
-
- worker->cmp = sqfs_copy(desc->cmp);
- if (worker->cmp == NULL) {
- ret = SQFS_ERROR_ALLOC;
- goto fail_pool;
- }
-
- proc->pool->set_worker_ptr(proc->pool, i, worker);
- }
-
- /* create the fragment hash table */
- proc->frag_ht = hash_table_create(chunk_info_hash, chunk_info_equals);
- if (proc->frag_ht == NULL) {
- ret = SQFS_ERROR_ALLOC;
- goto fail_pool;
- }
-
- proc->frag_ht->user = proc;
- *out = proc;
- return 0;
-fail_pool:
- proc->pool->destroy(proc->pool);
- while (proc->workers != NULL) {
- worker_data_t *worker = proc->workers;
- proc->workers = worker->next;
-
- if (worker->cmp != NULL)
- sqfs_destroy(worker->cmp);
-
- free(worker);
- }
- free(proc);
- return ret;
-}
-
-sqfs_block_processor_t *sqfs_block_processor_create(size_t max_block_size,
- sqfs_compressor_t *cmp,
- unsigned int num_workers,
- size_t max_backlog,
- sqfs_block_writer_t *wr,
- sqfs_frag_table_t *tbl)
-{
- sqfs_block_processor_desc_t desc;
- sqfs_block_processor_t *out;
-
- memset(&desc, 0, sizeof(desc));
- desc.size = sizeof(desc);
- desc.max_block_size = max_block_size;
- desc.num_workers = num_workers;
- desc.max_backlog = max_backlog;
- desc.cmp = cmp;
- desc.wr = wr;
- desc.tbl = tbl;
-
- if (sqfs_block_processor_create_ex(&desc, &out) != 0)
- return NULL;
-
- return out;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 03:15:40 +0000