Move library source into src sub-directory

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 460 deletions

diff --git a/lib/sqfs/dir_writer.c b/lib/sqfs/dir_writer.c
deleted file mode 100644
index d2b72df..0000000
--- a/lib/sqfs/dir_writer.c
+++ /dev/null
@@ -1,460 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * dir_writer.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#define SQFS_BUILDING_DLL
-#include "config.h"
-
-#include "sqfs/meta_writer.h"
-#include "sqfs/dir_writer.h"
-#include "sqfs/super.h"
-#include "sqfs/table.h"
-#include "sqfs/inode.h"
-#include "sqfs/error.h"
-#include "sqfs/block.h"
-#include "sqfs/dir.h"
-#include "util/array.h"
-#include "util/util.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-#define DIR_INDEX_THRESHOLD (256)
-
-typedef struct dir_entry_t {
-	struct dir_entry_t *next;
-	sqfs_u64 inode_ref;
-	sqfs_u32 inode_num;
-	sqfs_u16 type;
-	size_t name_len;
-	char name[];
-} dir_entry_t;
-
-typedef struct index_ent_t {
-	struct index_ent_t *next;
-	dir_entry_t *ent;
-	sqfs_u64 block;
-	sqfs_u32 index;
-} index_ent_t;
-
-struct sqfs_dir_writer_t {
-	sqfs_object_t base;
-
-	dir_entry_t *list;
-	dir_entry_t *list_end;
-
-	index_ent_t *idx;
-	index_ent_t *idx_end;
-
-	sqfs_u64 dir_ref;
-	size_t dir_size;
-	size_t ent_count;
-	sqfs_meta_writer_t *dm;
-
-	array_t export_tbl;
-};
-
-static int get_type(sqfs_u16 mode)
-{
-	switch (mode & S_IFMT) {
-	case S_IFSOCK: return SQFS_INODE_SOCKET;
-	case S_IFIFO:  return SQFS_INODE_FIFO;
-	case S_IFLNK:  return SQFS_INODE_SLINK;
-	case S_IFBLK:  return SQFS_INODE_BDEV;
-	case S_IFCHR:  return SQFS_INODE_CDEV;
-	case S_IFDIR:  return SQFS_INODE_DIR;
-	case S_IFREG:  return SQFS_INODE_FILE;
-	default:
-		break;
-	}
-
-	return SQFS_ERROR_UNSUPPORTED;
-}
-
-static void writer_reset(sqfs_dir_writer_t *writer)
-{
-	dir_entry_t *ent;
-	index_ent_t *idx;
-
-	while (writer->idx != NULL) {
-		idx = writer->idx;
-		writer->idx = idx->next;
-		free(idx);
-	}
-
-	while (writer->list != NULL) {
-		ent = writer->list;
-		writer->list = ent->next;
-		free(ent);
-	}
-
-	writer->list_end = NULL;
-	writer->idx_end = NULL;
-	writer->dir_ref = 0;
-	writer->dir_size = 0;
-	writer->ent_count = 0;
-}
-
-static int add_export_table_entry(sqfs_dir_writer_t *writer,
-				  sqfs_u32 inum, sqfs_u64 iref)
-{
-	sqfs_u64 *ptr;
-	int ret;
-
-	if (writer->export_tbl.data == NULL)
-		return 0;
-
-	if (inum < 1)
-		return SQFS_ERROR_ARG_INVALID;
-
-	ret = array_set_capacity(&writer->export_tbl, inum);
-	if (ret != 0)
-		return ret;
-
-	ptr = (sqfs_u64 *)writer->export_tbl.data;
-
-	if ((inum - 1) >= writer->export_tbl.used) {
-		memset(ptr + writer->export_tbl.used, 0xFF,
-		       (inum - writer->export_tbl.used) * sizeof(*ptr));
-
-		writer->export_tbl.used = inum;
-	}
-
-	ptr[inum - 1] = iref;
-	return 0;
-}
-
-static void dir_writer_destroy(sqfs_object_t *obj)
-{
-	sqfs_dir_writer_t *writer = (sqfs_dir_writer_t *)obj;
-
-	sqfs_drop(writer->dm);
-	writer_reset(writer);
-	array_cleanup(&writer->export_tbl);
-	free(writer);
-}
-
-sqfs_dir_writer_t *sqfs_dir_writer_create(sqfs_meta_writer_t *dm,
-					  sqfs_u32 flags)
-{
-	sqfs_dir_writer_t *writer;
-
-	if (flags & ~SQFS_DIR_WRITER_CREATE_ALL_FLAGS)
-		return NULL;
-
-	writer = calloc(1, sizeof(*writer));
-	if (writer == NULL)
-		return NULL;
-
-	sqfs_object_init(writer, dir_writer_destroy, NULL);
-
-	if (flags & SQFS_DIR_WRITER_CREATE_EXPORT_TABLE) {
-		if (array_init(&writer->export_tbl, sizeof(sqfs_u64), 512)) {
-			free(writer);
-			return NULL;
-		}
-
-		memset(writer->export_tbl.data, 0xFF,
-		       writer->export_tbl.size * writer->export_tbl.count);
-	}
-
-	writer->dm = sqfs_grab(dm);
-	return writer;
-}
-
-int sqfs_dir_writer_begin(sqfs_dir_writer_t *writer, sqfs_u32 flags)
-{
-	sqfs_u32 offset;
-	sqfs_u64 block;
-
-	if (flags != 0)
-		return SQFS_ERROR_UNSUPPORTED;
-
-	writer_reset(writer);
-
-	sqfs_meta_writer_get_position(writer->dm, &block, &offset);
-	writer->dir_ref = (block << 16) | offset;
-	return 0;
-}
-
-int sqfs_dir_writer_add_entry(sqfs_dir_writer_t *writer, const char *name,
-			      sqfs_u32 inode_num, sqfs_u64 inode_ref,
-			      sqfs_u16 mode)
-{
-	dir_entry_t *ent;
-	int type, err;
-
-	type = get_type(mode);
-	if (type < 0)
-		return type;
-
-	if (name[0] == '\0' || inode_num < 1)
-		return SQFS_ERROR_ARG_INVALID;
-
-	err = add_export_table_entry(writer, inode_num, inode_ref);
-	if (err)
-		return err;
-
-	ent = alloc_flex(sizeof(*ent), 1, strlen(name));
-	if (ent == NULL)
-		return SQFS_ERROR_ALLOC;
-
-	ent->inode_ref = inode_ref;
-	ent->inode_num = inode_num;
-	ent->type = type;
-	ent->name_len = strlen(name);
-	memcpy(ent->name, name, ent->name_len);
-
-	if (writer->list_end == NULL) {
-		writer->list = writer->list_end = ent;
-	} else {
-		writer->list_end->next = ent;
-		writer->list_end = ent;
-	}
-
-	writer->ent_count += 1;
-	return 0;
-}
-
-static size_t get_conseq_entry_count(sqfs_u32 offset, dir_entry_t *head)
-{
-	size_t size, count = 0;
-	dir_entry_t *it;
-	sqfs_s32 diff;
-
-	size = (offset + sizeof(sqfs_dir_header_t)) % SQFS_META_BLOCK_SIZE;
-
-	for (it = head; it != NULL; it = it->next) {
-		if ((it->inode_ref >> 16) != (head->inode_ref >> 16))
-			break;
-
-		diff = it->inode_num - head->inode_num;
-
-		if (diff > 32767 || diff < -32767)
-			break;
-
-		size += sizeof(sqfs_dir_entry_t) + it->name_len;
-
-		if (count > 0 && size > SQFS_META_BLOCK_SIZE)
-			break;
-
-		count += 1;
-
-		if (count == SQFS_MAX_DIR_ENT)
-			break;
-	}
-
-	return count;
-}
-
-static int add_header(sqfs_dir_writer_t *writer, size_t count,
-		      dir_entry_t *ref, sqfs_u64 block)
-{
-	sqfs_dir_header_t hdr;
-	index_ent_t *idx;
-	int err;
-
-	hdr.count = htole32(count - 1);
-	hdr.start_block = htole32(ref->inode_ref >> 16);
-	hdr.inode_number = htole32(ref->inode_num);
-
-	err = sqfs_meta_writer_append(writer->dm, &hdr, sizeof(hdr));
-	if (err)
-		return err;
-
-	idx = calloc(1, sizeof(*idx));
-	if (idx == NULL)
-		return SQFS_ERROR_ALLOC;
-
-	idx->ent = ref;
-	idx->block = block;
-	idx->index = writer->dir_size;
-
-	if (writer->idx_end == NULL) {
-		writer->idx = writer->idx_end = idx;
-	} else {
-		writer->idx_end->next = idx;
-		writer->idx_end = idx;
-	}
-
-	writer->dir_size += sizeof(hdr);
-	return 0;
-}
-
-int sqfs_dir_writer_end(sqfs_dir_writer_t *writer)
-{
-	dir_entry_t *it, *first;
-	sqfs_dir_entry_t ent;
-	sqfs_u16 *diff_u16;
-	size_t i, count;
-	sqfs_u32 offset;
-	sqfs_u64 block;
-	int err;
-
-	for (it = writer->list; it != NULL; ) {
-		sqfs_meta_writer_get_position(writer->dm, &block, &offset);
-		count = get_conseq_entry_count(offset, it);
-
-		err = add_header(writer, count, it, block);
-		if (err)
-			return err;
-
-		first = it;
-
-		for (i = 0; i < count; ++i) {
-			ent.offset = htole16(it->inode_ref & 0x0000FFFF);
-			ent.inode_diff = it->inode_num - first->inode_num;
-			ent.type = htole16(it->type);
-			ent.size = htole16(it->name_len - 1);
-
-			diff_u16 = (sqfs_u16 *)&ent.inode_diff;
-			*diff_u16 = htole16(*diff_u16);
-
-			err = sqfs_meta_writer_append(writer->dm, &ent,
-						      sizeof(ent));
-			if (err)
-				return err;
-
-			err = sqfs_meta_writer_append(writer->dm, it->name,
-						      it->name_len);
-			if (err)
-				return err;
-
-			writer->dir_size += sizeof(ent) + it->name_len;
-			it = it->next;
-		}
-	}
-
-	return 0;
-}
-
-size_t sqfs_dir_writer_get_size(const sqfs_dir_writer_t *writer)
-{
-	return writer->dir_size;
-}
-
-sqfs_u64 sqfs_dir_writer_get_dir_reference(const sqfs_dir_writer_t *writer)
-{
-	return writer->dir_ref;
-}
-
-size_t sqfs_dir_writer_get_index_size(const sqfs_dir_writer_t *writer)
-{
-	size_t index_size = 0;
-	index_ent_t *idx;
-
-	for (idx = writer->idx; idx != NULL; idx = idx->next)
-		index_size += sizeof(sqfs_dir_index_t) + idx->ent->name_len;
-
-	return index_size;
-}
-
-size_t sqfs_dir_writer_get_entry_count(const sqfs_dir_writer_t *writer)
-{
-	return writer->ent_count;
-}
-
-sqfs_inode_generic_t
-*sqfs_dir_writer_create_inode(const sqfs_dir_writer_t *writer,
-			      size_t hlinks, sqfs_u32 xattr,
-			      sqfs_u32 parent_ino)
-{
-	sqfs_inode_generic_t *inode;
-	sqfs_dir_index_t ent;
-	sqfs_u64 start_block;
-	sqfs_u16 block_offset;
-	size_t index_size;
-	index_ent_t *idx;
-	sqfs_u8 *ptr;
-
-	index_size = 0;
-
-	for (idx = writer->idx; idx != NULL; idx = idx->next)
-		index_size += sizeof(ent) + idx->ent->name_len;
-
-	inode = alloc_flex(sizeof(*inode), 1, index_size);
-	if (inode == NULL)
-		return NULL;
-
-	inode->payload_bytes_available = index_size;
-	start_block = writer->dir_ref >> 16;
-	block_offset = writer->dir_ref & 0xFFFF;
-
-	if (xattr != 0xFFFFFFFF || start_block > 0xFFFFFFFFUL ||
-	    writer->dir_size > (0xFFFF - 3)) {
-		inode->base.type = SQFS_INODE_EXT_DIR;
-	} else {
-		inode->base.type = SQFS_INODE_DIR;
-	}
-
-	if (writer->ent_count >= DIR_INDEX_THRESHOLD)
-		inode->base.type = SQFS_INODE_EXT_DIR;
-
-	if (inode->base.type == SQFS_INODE_DIR) {
-		inode->data.dir.start_block = start_block;
-		inode->data.dir.nlink = writer->ent_count + hlinks + 2;
-		inode->data.dir.size = writer->dir_size + 3;
-		inode->data.dir.offset = block_offset;
-		inode->data.dir.parent_inode = parent_ino;
-	} else {
-		inode->data.dir_ext.nlink = writer->ent_count + hlinks + 2;
-		inode->data.dir_ext.size = writer->dir_size + 3;
-		inode->data.dir_ext.start_block = start_block;
-		inode->data.dir_ext.parent_inode = parent_ino;
-		inode->data.dir_ext.offset = block_offset;
-		inode->data.dir_ext.xattr_idx = xattr;
-		inode->data.dir_ext.inodex_count = 0;
-		inode->payload_bytes_used = 0;
-
-		for (idx = writer->idx; idx != NULL; idx = idx->next) {
-			memset(&ent, 0, sizeof(ent));
-			ent.start_block = idx->block;
-			ent.index = idx->index;
-			ent.size = idx->ent->name_len - 1;
-
-			ptr = (sqfs_u8 *)inode->extra +
-				inode->payload_bytes_used;
-			memcpy(ptr, &ent, sizeof(ent));
-			memcpy(ptr + sizeof(ent), idx->ent->name,
-			       idx->ent->name_len);
-
-			inode->data.dir_ext.inodex_count += 1;
-			inode->payload_bytes_used += sizeof(ent);
-			inode->payload_bytes_used += idx->ent->name_len;
-		}
-	}
-
-	return inode;
-}
-
-int sqfs_dir_writer_write_export_table(sqfs_dir_writer_t *writer,
-				       sqfs_file_t *file,
-				       sqfs_compressor_t *cmp,
-				       sqfs_u32 root_inode_num,
-				       sqfs_u64 root_inode_ref,
-				       sqfs_super_t *super)
-{
-	sqfs_u64 start;
-	size_t size;
-	int ret;
-
-	ret = add_export_table_entry(writer, root_inode_num, root_inode_ref);
-	if (ret)
-		return 0;
-
-	if (writer->export_tbl.data == NULL)
-		return 0;
-
-	size = writer->export_tbl.size * writer->export_tbl.used;
-
-	ret = sqfs_write_table(file, cmp, writer->export_tbl.data,
-			       size, &start);
-	if (ret)
-		return ret;
-
-	super->export_table_start = start;
-	super->flags |= SQFS_FLAG_EXPORTABLE;
-	return 0;
-}