12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788 |
- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2020 Bootlin
- *
- * Author: Joao Marcos Costa <joaomarcos.costa@bootlin.com>
- */
- #include <errno.h>
- #include <stdint.h>
- #include <stdio.h>
- #include <stdlib.h>
- #if IS_ENABLED(CONFIG_ZLIB)
- #include <u-boot/zlib.h>
- #endif
- #include "sqfs_decompressor.h"
- #include "sqfs_utils.h"
- int sqfs_decompressor_init(struct squashfs_ctxt *ctxt)
- {
- u16 comp_type = get_unaligned_le16(&ctxt->sblk->compression);
- switch (comp_type) {
- #if IS_ENABLED(CONFIG_ZLIB)
- case SQFS_COMP_ZLIB:
- break;
- #endif
- default:
- printf("Error: unknown compression type.\n");
- return -EINVAL;
- }
- return 0;
- }
- void sqfs_decompressor_cleanup(struct squashfs_ctxt *ctxt)
- {
- u16 comp_type = get_unaligned_le16(&ctxt->sblk->compression);
- switch (comp_type) {
- #if IS_ENABLED(CONFIG_ZLIB)
- case SQFS_COMP_ZLIB:
- break;
- #endif
- }
- }
- #if IS_ENABLED(CONFIG_ZLIB)
- static void zlib_decompression_status(int ret)
- {
- switch (ret) {
- case Z_BUF_ERROR:
- printf("Error: 'dest' buffer is not large enough.\n");
- break;
- case Z_DATA_ERROR:
- printf("Error: corrupted compressed data.\n");
- break;
- case Z_MEM_ERROR:
- printf("Error: insufficient memory.\n");
- break;
- }
- }
- #endif
- int sqfs_decompress(struct squashfs_ctxt *ctxt, void *dest,
- unsigned long *dest_len, void *source, u32 src_len)
- {
- u16 comp_type = get_unaligned_le16(&ctxt->sblk->compression);
- int ret = 0;
- switch (comp_type) {
- #if IS_ENABLED(CONFIG_ZLIB)
- case SQFS_COMP_ZLIB:
- ret = uncompress(dest, dest_len, source, src_len);
- if (ret) {
- zlib_decompression_status(ret);
- return -EINVAL;
- }
- break;
- #endif
- default:
- printf("Error: unknown compression type.\n");
- return -EINVAL;
- }
- return ret;
- }
|