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-rw-r--r--lib/sqfs/Makemodule.am1
-rw-r--r--lib/sqfs/block_processor/common.c156
-rw-r--r--lib/sqfs/block_processor/frontend.c164
3 files changed, 165 insertions, 156 deletions
diff --git a/lib/sqfs/Makemodule.am b/lib/sqfs/Makemodule.am
index fffa502..61c9b09 100644
--- a/lib/sqfs/Makemodule.am
+++ b/lib/sqfs/Makemodule.am
@@ -23,6 +23,7 @@ libsquashfs_la_SOURCES += lib/sqfs/inode.c
libsquashfs_la_SOURCES += lib/sqfs/write_super.c lib/sqfs/data_reader.c
libsquashfs_la_SOURCES += lib/sqfs/block_processor/internal.h
libsquashfs_la_SOURCES += lib/sqfs/block_processor/common.c
+libsquashfs_la_SOURCES += lib/sqfs/block_processor/frontend.c
libsquashfs_la_SOURCES += lib/sqfs/frag_table.c include/sqfs/frag_table.h
libsquashfs_la_SOURCES += lib/sqfs/block_writer.c include/sqfs/block_writer.h
libsquashfs_la_CPPFLAGS = $(AM_CPPFLAGS)
diff --git a/lib/sqfs/block_processor/common.c b/lib/sqfs/block_processor/common.c
index 1bccf57..01f4cce 100644
--- a/lib/sqfs/block_processor/common.c
+++ b/lib/sqfs/block_processor/common.c
@@ -44,23 +44,6 @@ static int set_block_size(sqfs_inode_generic_t **inode,
return 0;
}
-static sqfs_block_t *get_new_block(sqfs_block_processor_t *proc)
-{
- sqfs_block_t *blk;
-
- if (proc->free_list != NULL) {
- blk = proc->free_list;
- proc->free_list = blk->next;
- } else {
- blk = malloc(sizeof(*blk) + proc->max_block_size);
- }
-
- if (blk != NULL)
- memset(blk, 0, sizeof(*blk));
-
- return blk;
-}
-
static void release_old_block(sqfs_block_processor_t *proc, sqfs_block_t *blk)
{
sqfs_block_t *it;
@@ -259,142 +242,3 @@ fail_outblk:
}
return err;
}
-
-static int add_sentinel_block(sqfs_block_processor_t *proc)
-{
- sqfs_block_t *blk = get_new_block(proc);
-
- if (blk == NULL)
- return SQFS_ERROR_ALLOC;
-
- blk->inode = proc->inode;
- blk->flags = proc->blk_flags | SQFS_BLK_LAST_BLOCK;
-
- return append_to_work_queue(proc, blk);
-}
-
-static int flush_block(sqfs_block_processor_t *proc)
-{
- sqfs_block_t *block = proc->blk_current;
-
- proc->blk_current = NULL;
-
- if (block->size < proc->max_block_size &&
- !(block->flags & SQFS_BLK_DONT_FRAGMENT)) {
- block->flags |= SQFS_BLK_IS_FRAGMENT;
- } else {
- proc->blk_flags &= ~SQFS_BLK_FIRST_BLOCK;
- }
-
- block->index = proc->blk_index++;
- return append_to_work_queue(proc, block);
-}
-
-int sqfs_block_processor_begin_file(sqfs_block_processor_t *proc,
- sqfs_inode_generic_t **inode, sqfs_u32 flags)
-{
- if (proc->inode != NULL)
- return SQFS_ERROR_SEQUENCE;
-
- if (flags & ~SQFS_BLK_USER_SETTABLE_FLAGS)
- return SQFS_ERROR_UNSUPPORTED;
-
- (*inode) = calloc(1, sizeof(sqfs_inode_generic_t));
- if ((*inode) == NULL)
- return SQFS_ERROR_ALLOC;
-
- (*inode)->base.type = SQFS_INODE_FILE;
- sqfs_inode_set_frag_location(*inode, 0xFFFFFFFF, 0xFFFFFFFF);
-
- proc->inode = inode;
- proc->blk_flags = flags | SQFS_BLK_FIRST_BLOCK;
- proc->blk_index = 0;
- return 0;
-}
-
-int sqfs_block_processor_append(sqfs_block_processor_t *proc, const void *data,
- size_t size)
-{
- sqfs_block_t *new;
- sqfs_u64 filesize;
- size_t diff;
- int err;
-
- sqfs_inode_get_file_size(*(proc->inode), &filesize);
- sqfs_inode_set_file_size(*(proc->inode), filesize + size);
-
- while (size > 0) {
- if (proc->blk_current == NULL) {
- new = get_new_block(proc);
- if (new == NULL)
- return SQFS_ERROR_ALLOC;
-
- proc->blk_current = new;
- proc->blk_current->flags = proc->blk_flags;
- proc->blk_current->inode = proc->inode;
- }
-
- diff = proc->max_block_size - proc->blk_current->size;
-
- if (diff == 0) {
- err = flush_block(proc);
- if (err)
- return err;
- continue;
- }
-
- if (diff > size)
- diff = size;
-
- memcpy(proc->blk_current->data + proc->blk_current->size,
- data, diff);
-
- size -= diff;
- proc->blk_current->size += diff;
- data = (const char *)data + diff;
-
- proc->stats.input_bytes_read += diff;
- }
-
- if (proc->blk_current != NULL &&
- proc->blk_current->size == proc->max_block_size) {
- return flush_block(proc);
- }
-
- return 0;
-}
-
-int sqfs_block_processor_end_file(sqfs_block_processor_t *proc)
-{
- int err;
-
- if (proc->inode == NULL)
- return SQFS_ERROR_SEQUENCE;
-
- if (!(proc->blk_flags & SQFS_BLK_FIRST_BLOCK)) {
- if (proc->blk_current != NULL &&
- (proc->blk_flags & SQFS_BLK_DONT_FRAGMENT)) {
- proc->blk_current->flags |= SQFS_BLK_LAST_BLOCK;
- } else {
- err = add_sentinel_block(proc);
- if (err)
- return err;
- }
- }
-
- if (proc->blk_current != NULL) {
- err = flush_block(proc);
- if (err)
- return err;
- }
-
- proc->inode = NULL;
- proc->blk_flags = 0;
- return 0;
-}
-
-const sqfs_block_processor_stats_t
-*sqfs_block_processor_get_stats(const sqfs_block_processor_t *proc)
-{
- return &proc->stats;
-}
diff --git a/lib/sqfs/block_processor/frontend.c b/lib/sqfs/block_processor/frontend.c
new file mode 100644
index 0000000..cfa6581
--- /dev/null
+++ b/lib/sqfs/block_processor/frontend.c
@@ -0,0 +1,164 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * frontend.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#define SQFS_BUILDING_DLL
+#include "internal.h"
+
+static sqfs_block_t *get_new_block(sqfs_block_processor_t *proc)
+{
+ sqfs_block_t *blk;
+
+ if (proc->free_list != NULL) {
+ blk = proc->free_list;
+ proc->free_list = blk->next;
+ } else {
+ blk = malloc(sizeof(*blk) + proc->max_block_size);
+ }
+
+ if (blk != NULL)
+ memset(blk, 0, sizeof(*blk));
+
+ return blk;
+}
+
+static int add_sentinel_block(sqfs_block_processor_t *proc)
+{
+ sqfs_block_t *blk = get_new_block(proc);
+
+ if (blk == NULL)
+ return SQFS_ERROR_ALLOC;
+
+ blk->inode = proc->inode;
+ blk->flags = proc->blk_flags | SQFS_BLK_LAST_BLOCK;
+
+ return append_to_work_queue(proc, blk);
+}
+
+static int flush_block(sqfs_block_processor_t *proc)
+{
+ sqfs_block_t *block = proc->blk_current;
+
+ proc->blk_current = NULL;
+
+ if (block->size < proc->max_block_size &&
+ !(block->flags & SQFS_BLK_DONT_FRAGMENT)) {
+ block->flags |= SQFS_BLK_IS_FRAGMENT;
+ } else {
+ proc->blk_flags &= ~SQFS_BLK_FIRST_BLOCK;
+ }
+
+ block->index = proc->blk_index++;
+ return append_to_work_queue(proc, block);
+}
+
+int sqfs_block_processor_begin_file(sqfs_block_processor_t *proc,
+ sqfs_inode_generic_t **inode, sqfs_u32 flags)
+{
+ if (proc->inode != NULL)
+ return SQFS_ERROR_SEQUENCE;
+
+ if (flags & ~SQFS_BLK_USER_SETTABLE_FLAGS)
+ return SQFS_ERROR_UNSUPPORTED;
+
+ (*inode) = calloc(1, sizeof(sqfs_inode_generic_t));
+ if ((*inode) == NULL)
+ return SQFS_ERROR_ALLOC;
+
+ (*inode)->base.type = SQFS_INODE_FILE;
+ sqfs_inode_set_frag_location(*inode, 0xFFFFFFFF, 0xFFFFFFFF);
+
+ proc->inode = inode;
+ proc->blk_flags = flags | SQFS_BLK_FIRST_BLOCK;
+ proc->blk_index = 0;
+ return 0;
+}
+
+int sqfs_block_processor_append(sqfs_block_processor_t *proc, const void *data,
+ size_t size)
+{
+ sqfs_block_t *new;
+ sqfs_u64 filesize;
+ size_t diff;
+ int err;
+
+ sqfs_inode_get_file_size(*(proc->inode), &filesize);
+ sqfs_inode_set_file_size(*(proc->inode), filesize + size);
+
+ while (size > 0) {
+ if (proc->blk_current == NULL) {
+ new = get_new_block(proc);
+ if (new == NULL)
+ return SQFS_ERROR_ALLOC;
+
+ proc->blk_current = new;
+ proc->blk_current->flags = proc->blk_flags;
+ proc->blk_current->inode = proc->inode;
+ }
+
+ diff = proc->max_block_size - proc->blk_current->size;
+
+ if (diff == 0) {
+ err = flush_block(proc);
+ if (err)
+ return err;
+ continue;
+ }
+
+ if (diff > size)
+ diff = size;
+
+ memcpy(proc->blk_current->data + proc->blk_current->size,
+ data, diff);
+
+ size -= diff;
+ proc->blk_current->size += diff;
+ data = (const char *)data + diff;
+
+ proc->stats.input_bytes_read += diff;
+ }
+
+ if (proc->blk_current != NULL &&
+ proc->blk_current->size == proc->max_block_size) {
+ return flush_block(proc);
+ }
+
+ return 0;
+}
+
+int sqfs_block_processor_end_file(sqfs_block_processor_t *proc)
+{
+ int err;
+
+ if (proc->inode == NULL)
+ return SQFS_ERROR_SEQUENCE;
+
+ if (!(proc->blk_flags & SQFS_BLK_FIRST_BLOCK)) {
+ if (proc->blk_current != NULL &&
+ (proc->blk_flags & SQFS_BLK_DONT_FRAGMENT)) {
+ proc->blk_current->flags |= SQFS_BLK_LAST_BLOCK;
+ } else {
+ err = add_sentinel_block(proc);
+ if (err)
+ return err;
+ }
+ }
+
+ if (proc->blk_current != NULL) {
+ err = flush_block(proc);
+ if (err)
+ return err;
+ }
+
+ proc->inode = NULL;
+ proc->blk_flags = 0;
+ return 0;
+}
+
+const sqfs_block_processor_stats_t
+*sqfs_block_processor_get_stats(const sqfs_block_processor_t *proc)
+{
+ return &proc->stats;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 10:34:11 +0000