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/* SPDX-License-Identifier: LGPL-3.0-or-later */
/*
* serial.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#define SQFS_BUILDING_DLL
#include "internal.h"
typedef struct {
sqfs_block_processor_t base;
int status;
sqfs_u8 scratch[];
} serial_block_processor_t;
static void block_processor_destroy(sqfs_object_t *obj)
{
sqfs_block_processor_t *proc = (sqfs_block_processor_t *)obj;
block_processor_cleanup(proc);
free(proc);
}
static int append_to_work_queue(sqfs_block_processor_t *proc,
sqfs_block_t *block)
{
serial_block_processor_t *sproc = (serial_block_processor_t *)proc;
sqfs_block_t *fragblk = NULL;
if (sproc->status != 0)
goto fail;
sproc->status = proc->process_block(block, proc->cmp, sproc->scratch,
proc->max_block_size);
if (sproc->status != 0)
goto fail;
if (block->flags & SQFS_BLK_IS_FRAGMENT) {
sproc->status = proc->process_completed_fragment(proc, block,
&fragblk);
if (fragblk == NULL)
return sproc->status;
block = fragblk;
sproc->status = proc->process_block(block, proc->cmp,
sproc->scratch,
proc->max_block_size);
if (sproc->status != 0)
goto fail;
}
sproc->status = proc->process_completed_block(proc, block);
return sproc->status;
fail:
free(block);
return sproc->status;
}
static int block_processor_sync(sqfs_block_processor_t *proc)
{
return ((serial_block_processor_t *)proc)->status;
}
static int compare_frag_in_flight(sqfs_block_processor_t *proc,
sqfs_block_t *frag, sqfs_u32 index,
sqfs_u32 offset)
{
if (proc->frag_block == NULL || index != proc->frag_block->index)
return -1;
if (offset >= proc->frag_block->size)
return -1;
if (frag->size > (proc->frag_block->size - offset))
return -1;
return memcmp(proc->frag_block->data + offset, frag->data, frag->size);
}
int sqfs_block_processor_create_ex(const sqfs_block_processor_desc_t *desc,
sqfs_block_processor_t **out)
{
serial_block_processor_t *proc;
int ret;
if (desc->size != sizeof(sqfs_block_processor_desc_t))
return SQFS_ERROR_ARG_INVALID;
proc = alloc_flex(sizeof(*proc), 1, desc->max_block_size);
if (proc == NULL)
return SQFS_ERROR_ALLOC;
ret = block_processor_init(&proc->base, desc);
if (ret != 0) {
free(proc);
return ret;
}
proc->base.sync = block_processor_sync;
proc->base.append_to_work_queue = append_to_work_queue;
proc->base.compare_frag_in_flight = compare_frag_in_flight;
((sqfs_object_t *)proc)->destroy = block_processor_destroy;
*out = (sqfs_block_processor_t *)proc;
return 0;
}
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