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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-23 18:51:51 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-23 18:53:26 +0200
commitc169887cc5d3ab83e7383234f46ad8963bc22b98 (patch)
treed00668257fe390250211278d0d9552cafa9431d0 /lib
parent41d33212c94d3f9efd43e0c40dd166c2136512a8 (diff)
Cleanup fragment handling in the data reader a little
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib')
-rw-r--r--lib/sqfshelper/data_writer.c77
1 files changed, 42 insertions, 35 deletions
diff --git a/lib/sqfshelper/data_writer.c b/lib/sqfshelper/data_writer.c
index 3163c4e..5bce527 100644
--- a/lib/sqfshelper/data_writer.c
+++ b/lib/sqfshelper/data_writer.c
@@ -50,20 +50,52 @@ static int flush_fragment_block(data_writer_t *data)
{
int ret;
- data->frag_block->index = data->num_fragments++;
-
ret = sqfs_block_processor_enqueue(data->proc, data->frag_block);
data->frag_block = NULL;
return ret;
}
+static int store_fragment(data_writer_t *data, sqfs_block_t *frag,
+ uint64_t signature)
+{
+ size_t new_sz;
+ void *new;
+
+ if (data->frag_list_num == data->frag_list_max) {
+ new_sz = data->frag_list_max * 2;
+ new = realloc(data->frag_list,
+ sizeof(data->frag_list[0]) * new_sz);
+
+ if (new == NULL) {
+ perror("growing fragment checksum table");
+ return -1;
+ }
+
+ data->frag_list = new;
+ data->frag_list_max = new_sz;
+ }
+
+ data->frag_list[data->frag_list_num].index = data->frag_block->index;
+ data->frag_list[data->frag_list_num].offset = data->frag_block->size;
+ data->frag_list[data->frag_list_num].signature = signature;
+ data->frag_list_num += 1;
+
+ sqfs_inode_set_frag_location(frag->inode, data->frag_block->index,
+ data->frag_block->size);
+
+ memcpy(data->frag_block->data + data->frag_block->size,
+ frag->data, frag->size);
+
+ data->frag_block->flags |= (frag->flags & SQFS_BLK_DONT_COMPRESS);
+ data->frag_block->size += frag->size;
+ return 0;
+}
+
static int handle_fragment(data_writer_t *data, sqfs_block_t *frag)
{
- size_t i, size, new_sz;
uint64_t signature;
- void *new;
+ size_t i, size;
- frag->checksum = crc32(0, frag->data, frag->size);
signature = MK_BLK_SIG(frag->checksum, frag->size);
for (i = 0; i < data->frag_list_num; ++i) {
@@ -72,8 +104,6 @@ static int handle_fragment(data_writer_t *data, sqfs_block_t *frag)
data->frag_list[i].index,
data->frag_list[i].offset);
free(frag);
-
- data->stats.frag_dup += 1;
return 0;
}
}
@@ -96,39 +126,14 @@ static int handle_fragment(data_writer_t *data, sqfs_block_t *frag)
goto fail;
}
+ data->frag_block->index = data->num_fragments++;
data->frag_block->flags = SQFS_BLK_FRAGMENT_BLOCK;
}
- if (data->frag_list_num == data->frag_list_max) {
- new_sz = data->frag_list_max * 2;
- new = realloc(data->frag_list,
- sizeof(data->frag_list[0]) * new_sz);
-
- if (new == NULL) {
- perror("growing fragment checksum table");
- return -1;
- }
-
- data->frag_list = new;
- data->frag_list_max = new_sz;
- }
-
- data->frag_list[data->frag_list_num].index = data->num_fragments;
- data->frag_list[data->frag_list_num].offset = data->frag_block->size;
- data->frag_list[data->frag_list_num].signature = signature;
- data->frag_list_num += 1;
-
- sqfs_inode_set_frag_location(frag->inode, data->num_fragments,
- data->frag_block->size);
+ if (store_fragment(data, frag, signature))
+ goto fail;
- data->frag_block->flags |= (frag->flags & SQFS_BLK_DONT_COMPRESS);
- memcpy(data->frag_block->data + data->frag_block->size,
- frag->data, frag->size);
-
- data->frag_block->size += frag->size;
free(frag);
-
- data->stats.frag_count += 1;
return 0;
fail:
free(frag);
@@ -220,6 +225,8 @@ int write_data_from_file_condensed(data_writer_t *data, sqfs_file_t *file,
}
}
+ blk->checksum = crc32(0, blk->data, blk->size);
+
if (handle_fragment(data, blk))
return -1;
} else {