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-rw-r--r--lib/sqfs/data_writer/common.c1
-rw-r--r--lib/sqfs/data_writer/fileapi.c78
-rw-r--r--lib/sqfs/data_writer/internal.h2
3 files changed, 61 insertions, 20 deletions
diff --git a/lib/sqfs/data_writer/common.c b/lib/sqfs/data_writer/common.c
index c9d5589..9e11e36 100644
--- a/lib/sqfs/data_writer/common.c
+++ b/lib/sqfs/data_writer/common.c
@@ -47,6 +47,7 @@ void data_writer_cleanup(sqfs_data_writer_t *proc)
{
free_blk_list(proc->queue);
free_blk_list(proc->done);
+ free(proc->blk_current);
free(proc->frag_block);
free(proc->frag_list);
free(proc->fragments);
diff --git a/lib/sqfs/data_writer/fileapi.c b/lib/sqfs/data_writer/fileapi.c
index b78d012..712fd29 100644
--- a/lib/sqfs/data_writer/fileapi.c
+++ b/lib/sqfs/data_writer/fileapi.c
@@ -35,16 +35,14 @@ int sqfs_data_writer_begin_file(sqfs_data_writer_t *proc,
return test_and_set_status(proc, SQFS_ERROR_UNSUPPORTED);
proc->inode = inode;
- proc->blk_flags = flags;
+ proc->blk_flags = flags | SQFS_BLK_FIRST_BLOCK;
proc->blk_index = 0;
- proc->had_fragment = false;
+ proc->blk_current = NULL;
return 0;
}
-int sqfs_data_writer_enqueue(sqfs_data_writer_t *proc, sqfs_block_t *block)
+static int flush_block(sqfs_data_writer_t *proc, sqfs_block_t *block)
{
- int err;
-
block->index = proc->blk_index++;
block->flags = proc->blk_flags;
block->inode = proc->inode;
@@ -59,25 +57,63 @@ int sqfs_data_writer_enqueue(sqfs_data_writer_t *proc, sqfs_block_t *block)
}
if (block->size < proc->max_block_size) {
- if (block->index > 0) {
- err = add_sentinel_block(proc);
+ block->flags |= SQFS_BLK_IS_FRAGMENT;
+ } else {
+ proc->inode->num_file_blocks += 1;
+ proc->blk_flags &= ~SQFS_BLK_FIRST_BLOCK;
+ }
+
+ return data_writer_enqueue(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);
- if (err) {
- free(block);
+ 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;
}
- proc->had_fragment = true;
- block->flags |= SQFS_BLK_IS_FRAGMENT;
- } else {
- if (block->index == 0)
- block->flags |= SQFS_BLK_FIRST_BLOCK;
+ if (diff > size)
+ diff = size;
- proc->inode->num_file_blocks += 1;
+ memcpy(proc->blk_current->data + proc->blk_current->size,
+ data, diff);
+
+ size -= diff;
+ proc->blk_current->size += diff;
+ data = (const char *)data + diff;
}
- return data_writer_enqueue(proc, block);
+ 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)
@@ -87,15 +123,19 @@ int sqfs_data_writer_end_file(sqfs_data_writer_t *proc)
if (proc->inode == NULL)
return test_and_set_status(proc, SQFS_ERROR_INTERNAL);
- if (!proc->had_fragment && proc->inode->num_file_blocks > 0) {
+ if (!(proc->blk_flags & SQFS_BLK_FIRST_BLOCK)) {
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;
- proc->had_fragment = false;
return 0;
}
diff --git a/lib/sqfs/data_writer/internal.h b/lib/sqfs/data_writer/internal.h
index 9072c19..1aa600b 100644
--- a/lib/sqfs/data_writer/internal.h
+++ b/lib/sqfs/data_writer/internal.h
@@ -103,9 +103,9 @@ struct sqfs_data_writer_t {
/* file API */
sqfs_inode_generic_t *inode;
+ sqfs_block_t *blk_current;
uint32_t blk_flags;
size_t blk_index;
- bool had_fragment;
/* used only by workers */
size_t max_block_size;