diff options
author | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2020-01-28 21:23:21 +0100 |
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committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2020-01-29 17:22:50 +0100 |
commit | 9d5b0c381a7961a14d2a94a6b31a4e25a2543eae (patch) | |
tree | 089a3cc96f54cd7b09762840d03e4dc2420c5ea9 /lib/sqfs/data_writer/fileapi.c | |
parent | 60ff56b68ea0593782d7a2ef0ac4e667437418d2 (diff) |
Rename sqfs_data_writer_t back to sqfs_block_processor_t
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/sqfs/data_writer/fileapi.c')
-rw-r--r-- | lib/sqfs/data_writer/fileapi.c | 188 |
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; -} |