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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-01-28 21:23:21 +0100
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-01-29 17:22:50 +0100
commit9d5b0c381a7961a14d2a94a6b31a4e25a2543eae (patch)
tree089a3cc96f54cd7b09762840d03e4dc2420c5ea9 /lib/sqfs/block_processor/fragment.c
parent60ff56b68ea0593782d7a2ef0ac4e667437418d2 (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/block_processor/fragment.c')
-rw-r--r--lib/sqfs/block_processor/fragment.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/lib/sqfs/block_processor/fragment.c b/lib/sqfs/block_processor/fragment.c
new file mode 100644
index 0000000..3701b3c
--- /dev/null
+++ b/lib/sqfs/block_processor/fragment.c
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * fragtbl.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#define SQFS_BUILDING_DLL
+#include "internal.h"
+
+int process_completed_fragment(sqfs_block_processor_t *proc, sqfs_block_t *frag,
+ sqfs_block_t **blk_out)
+{
+ sqfs_u32 index, offset;
+ size_t size;
+ int err;
+
+ err = sqfs_frag_table_find_tail_end(proc->frag_tbl,
+ frag->checksum, frag->size,
+ &index, &offset);
+ if (err == 0)
+ goto out_duplicate;
+
+ 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) {
+ size = sizeof(sqfs_block_t) + proc->max_block_size;
+
+ err= sqfs_frag_table_append(proc->frag_tbl, 0, 0, &index);
+ if (err)
+ goto fail;
+
+ proc->frag_block = calloc(1, size);
+ if (proc->frag_block == NULL) {
+ err = SQFS_ERROR_ALLOC;
+ goto fail;
+ }
+
+ proc->frag_block->index = index;
+ proc->frag_block->flags = SQFS_BLK_FRAGMENT_BLOCK;
+ }
+
+ err = sqfs_frag_table_add_tail_end(proc->frag_tbl,
+ proc->frag_block->index,
+ proc->frag_block->size,
+ frag->size, frag->checksum);
+ if (err)
+ goto fail;
+
+ sqfs_inode_set_frag_location(frag->inode, proc->frag_block->index,
+ proc->frag_block->size);
+
+ if (proc->hooks != NULL && proc->hooks->pre_fragment_store != NULL) {
+ proc->hooks->pre_fragment_store(proc->user_ptr, frag);
+ }
+
+ memcpy(proc->frag_block->data + proc->frag_block->size,
+ frag->data, frag->size);
+
+ proc->frag_block->flags |= (frag->flags & SQFS_BLK_DONT_COMPRESS);
+ proc->frag_block->size += frag->size;
+ return 0;
+fail:
+ free(*blk_out);
+ *blk_out = NULL;
+ return err;
+out_duplicate:
+ sqfs_inode_set_frag_location(frag->inode, index, offset);
+
+ if (proc->hooks != NULL &&
+ proc->hooks->notify_fragment_discard != NULL) {
+ proc->hooks->notify_fragment_discard(proc->user_ptr, frag);
+ }
+ return 0;
+}