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Diffstat (limited to 'lib/sqfs/data_writer/fileapi.c')
-rw-r--r--lib/sqfs/data_writer/fileapi.c188
1 files changed, 0 insertions, 188 deletions
diff --git a/lib/sqfs/data_writer/fileapi.c b/lib/sqfs/data_writer/fileapi.c
deleted file mode 100644
index 89bac0b..0000000
--- a/lib/sqfs/data_writer/fileapi.c
+++ /dev/null
@@ -1,188 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * fileapi.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#define SQFS_BUILDING_DLL
-#include "internal.h"
-
-static bool is_zero_block(unsigned char *ptr, size_t size)
-{
- return ptr[0] == 0 && memcmp(ptr, ptr + 1, size - 1) == 0;
-}
-
-static int enqueue_block(sqfs_data_writer_t *proc, sqfs_block_t *block)
-{
- int status;
-
- while (proc->backlog > proc->max_backlog) {
- status = wait_completed(proc);
- if (status)
- return status;
- }
-
- if (proc->backlog == proc->max_backlog)
- proc->notify_threads = true;
-
- return append_to_work_queue(proc, block, proc->notify_threads);
-}
-
-static int add_sentinel_block(sqfs_data_writer_t *proc)
-{
- sqfs_block_t *blk = calloc(1, sizeof(*blk));
-
- if (blk == NULL)
- return test_and_set_status(proc, SQFS_ERROR_ALLOC);
-
- blk->inode = proc->inode;
- blk->flags = proc->blk_flags | SQFS_BLK_LAST_BLOCK;
-
- return enqueue_block(proc, blk);
-}
-
-int sqfs_data_writer_begin_file(sqfs_data_writer_t *proc,
- sqfs_inode_generic_t *inode, sqfs_u32 flags)
-{
- if (proc->inode != NULL)
- return test_and_set_status(proc, SQFS_ERROR_INTERNAL);
-
- if (flags & ~SQFS_BLK_USER_SETTABLE_FLAGS)
- return test_and_set_status(proc, SQFS_ERROR_UNSUPPORTED);
-
- proc->inode = inode;
- proc->blk_flags = flags | SQFS_BLK_FIRST_BLOCK;
- proc->blk_index = 0;
- proc->blk_current = NULL;
- return 0;
-}
-
-static int flush_block(sqfs_data_writer_t *proc, sqfs_block_t *block)
-{
- block->index = proc->blk_index++;
- block->flags = proc->blk_flags;
- block->inode = proc->inode;
-
- if (is_zero_block(block->data, block->size)) {
- sqfs_inode_make_extended(proc->inode);
- proc->inode->data.file_ext.sparse += block->size;
- proc->inode->num_file_blocks += 1;
- proc->inode->extra[block->index] = 0;
- free(block);
- return 0;
- }
-
- if (block->size < proc->max_block_size &&
- !(block->flags & SQFS_BLK_DONT_FRAGMENT)) {
- block->flags |= SQFS_BLK_IS_FRAGMENT;
- } else {
- proc->inode->num_file_blocks += 1;
- proc->blk_flags &= ~SQFS_BLK_FIRST_BLOCK;
- }
-
- return enqueue_block(proc, block);
-}
-
-int sqfs_data_writer_append(sqfs_data_writer_t *proc, const void *data,
- size_t size)
-{
- size_t diff;
- void *new;
- int err;
-
- while (size > 0) {
- if (proc->blk_current == NULL) {
- new = alloc_flex(sizeof(*proc->blk_current), 1,
- proc->max_block_size);
-
- if (new == NULL)
- return test_and_set_status(proc,
- SQFS_ERROR_ALLOC);
-
- proc->blk_current = new;
- }
-
- diff = proc->max_block_size - proc->blk_current->size;
-
- if (diff == 0) {
- err = flush_block(proc, proc->blk_current);
- proc->blk_current = NULL;
- if (err)
- return err;
- continue;
- }
-
- if (diff > size)
- diff = size;
-
- memcpy(proc->blk_current->data + proc->blk_current->size,
- data, diff);
-
- size -= diff;
- proc->blk_current->size += diff;
- data = (const char *)data + diff;
- }
-
- if (proc->blk_current != NULL &&
- proc->blk_current->size == proc->max_block_size) {
- err = flush_block(proc, proc->blk_current);
- proc->blk_current = NULL;
- return err;
- }
-
- return 0;
-}
-
-int sqfs_data_writer_end_file(sqfs_data_writer_t *proc)
-{
- int err;
-
- if (proc->inode == NULL)
- return test_and_set_status(proc, SQFS_ERROR_INTERNAL);
-
- if (!(proc->blk_flags & SQFS_BLK_FIRST_BLOCK)) {
- if (proc->blk_current != NULL &&
- (proc->blk_flags & SQFS_BLK_DONT_FRAGMENT)) {
- proc->blk_flags |= SQFS_BLK_LAST_BLOCK;
- } else {
- err = add_sentinel_block(proc);
- if (err)
- return err;
- }
- }
-
- if (proc->blk_current != NULL) {
- err = flush_block(proc, proc->blk_current);
- proc->blk_current = NULL;
- }
-
- proc->inode = NULL;
- proc->blk_flags = 0;
- proc->blk_index = 0;
- return 0;
-}
-
-int sqfs_data_writer_finish(sqfs_data_writer_t *proc)
-{
- int status = 0;
-
- append_to_work_queue(proc, NULL, true);
-
- while (proc->backlog > 0) {
- status = wait_completed(proc);
- if (status)
- return status;
- }
-
- if (proc->frag_block != NULL) {
- status = append_to_work_queue(proc, proc->frag_block, true);
- proc->frag_block = NULL;
-
- if (status)
- return status;
-
- status = wait_completed(proc);
- }
-
- return status;
-}