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authorAndreas Kling <awesomekling@gmail.com>2019-06-09 12:46:23 +0200
committerAndreas Kling <awesomekling@gmail.com>2019-06-09 12:46:23 +0200
commit6873e7d01628eb2e8a850b0caebfeb6c1fd373db (patch)
tree81ca697bcfb0d35d071ebae99aaaf9dfef7fba61 /Kernel/FileSystem
parent3bc699a336190981afec80d9da47f6b4ab8e5b3a (diff)
downloadserenity-6873e7d01628eb2e8a850b0caebfeb6c1fd373db.zip
Ext2FS: Move directory writing logic into Ext2FSInode.
Diffstat (limited to 'Kernel/FileSystem')
-rw-r--r--Kernel/FileSystem/Ext2FileSystem.cpp109
-rw-r--r--Kernel/FileSystem/Ext2FileSystem.h3
2 files changed, 56 insertions, 56 deletions
diff --git a/Kernel/FileSystem/Ext2FileSystem.cpp b/Kernel/FileSystem/Ext2FileSystem.cpp
index 753863dcd5..c1c07963a9 100644
--- a/Kernel/FileSystem/Ext2FileSystem.cpp
+++ b/Kernel/FileSystem/Ext2FileSystem.cpp
@@ -704,6 +704,57 @@ bool Ext2FSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)
return true;
}
+bool Ext2FSInode::write_directory(const Vector<FS::DirectoryEntry>& entries)
+{
+ LOCKER(m_lock);
+ dbgprintf("Ext2FS: New directory inode %u contents to write:\n", index());
+
+ int directory_size = 0;
+ for (auto& entry : entries) {
+ //kprintf(" - %08u %s\n", entry.inode.index(), entry.name);
+ directory_size += EXT2_DIR_REC_LEN(entry.name_length);
+ }
+
+ auto block_size = fs().block_size();
+
+ int blocks_needed = ceil_div(directory_size, block_size);
+ int occupied_size = blocks_needed * block_size;
+
+ dbgprintf("Ext2FS: directory size: %u (occupied: %u)\n", directory_size, occupied_size);
+
+ auto directory_data = ByteBuffer::create_uninitialized(occupied_size);
+
+ BufferStream stream(directory_data);
+ for (int i = 0; i < entries.size(); ++i) {
+ auto& entry = entries[i];
+
+ int record_length = EXT2_DIR_REC_LEN(entry.name_length);
+ if (i == entries.size() - 1)
+ record_length += occupied_size - directory_size;
+
+ dbgprintf("* inode: %u", entry.inode.index());
+ dbgprintf(", name_len: %u", word(entry.name_length));
+ dbgprintf(", rec_len: %u", word(record_length));
+ dbgprintf(", file_type: %u", byte(entry.file_type));
+ dbgprintf(", name: %s\n", entry.name);
+
+ stream << dword(entry.inode.index());
+ stream << word(record_length);
+ stream << byte(entry.name_length);
+ stream << byte(entry.file_type);
+ stream << entry.name;
+
+ int padding = record_length - entry.name_length - 8;
+ for (int j = 0; j < padding; ++j)
+ stream << byte(0);
+ }
+
+ stream.fill_to_end(0);
+
+ ssize_t nwritten = write_bytes(0, directory_data.size(), directory_data.pointer(), nullptr);
+ return nwritten == directory_data.size();
+}
+
KResult Ext2FSInode::add_child(InodeIdentifier child_id, const StringView& name, mode_t mode)
{
LOCKER(m_lock);
@@ -733,7 +784,7 @@ KResult Ext2FSInode::add_child(InodeIdentifier child_id, const StringView& name,
child_inode->increment_link_count();
entries.append({ name.characters(), name.length(), child_id, to_ext2_file_type(mode) });
- bool success = fs().write_directory_inode(index(), move(entries));
+ bool success = write_directory(entries);
if (success)
m_lookup_cache.set(name, child_id.index());
return KSuccess;
@@ -766,9 +817,9 @@ KResult Ext2FSInode::remove_child(const StringView& name)
return true;
});
- bool success = fs().write_directory_inode(index(), move(entries));
+ bool success = write_directory(entries);
if (!success) {
- // FIXME: Plumb error from write_directory_inode().
+ // FIXME: Plumb error from write_directory().
return KResult(-EIO);
}
@@ -779,56 +830,6 @@ KResult Ext2FSInode::remove_child(const StringView& name)
return KSuccess;
}
-bool Ext2FS::write_directory_inode(InodeIndex directory_inode_index, Vector<DirectoryEntry>&& entries)
-{
- LOCKER(m_lock);
- dbgprintf("Ext2FS: New directory inode %u contents to write:\n", directory_inode_index);
-
- int directory_size = 0;
- for (auto& entry : entries) {
- //kprintf(" - %08u %s\n", entry.inode.index(), entry.name);
- directory_size += EXT2_DIR_REC_LEN(entry.name_length);
- }
-
- int blocks_needed = ceil_div(directory_size, block_size());
- int occupied_size = blocks_needed * block_size();
-
- dbgprintf("Ext2FS: directory size: %u (occupied: %u)\n", directory_size, occupied_size);
-
- auto directory_data = ByteBuffer::create_uninitialized(occupied_size);
-
- BufferStream stream(directory_data);
- for (int i = 0; i < entries.size(); ++i) {
- auto& entry = entries[i];
-
- int record_length = EXT2_DIR_REC_LEN(entry.name_length);
- if (i == entries.size() - 1)
- record_length += occupied_size - directory_size;
-
- dbgprintf("* inode: %u", entry.inode.index());
- dbgprintf(", name_len: %u", word(entry.name_length));
- dbgprintf(", rec_len: %u", word(record_length));
- dbgprintf(", file_type: %u", byte(entry.file_type));
- dbgprintf(", name: %s\n", entry.name);
-
- stream << dword(entry.inode.index());
- stream << word(record_length);
- stream << byte(entry.name_length);
- stream << byte(entry.file_type);
- stream << entry.name;
-
- int padding = record_length - entry.name_length - 8;
- for (int j = 0; j < padding; ++j)
- stream << byte(0);
- }
-
- stream.fill_to_end(0);
-
- auto directory_inode = get_inode({ fsid(), directory_inode_index });
- ssize_t nwritten = directory_inode->write_bytes(0, directory_data.size(), directory_data.pointer(), nullptr);
- return nwritten == directory_data.size();
-}
-
unsigned Ext2FS::inodes_per_block() const
{
return EXT2_INODES_PER_BLOCK(&super_block());
@@ -1106,7 +1107,7 @@ RetainPtr<Inode> Ext2FS::create_directory(InodeIdentifier parent_id, const Strin
entries.append({ ".", inode->identifier(), EXT2_FT_DIR });
entries.append({ "..", parent_id, EXT2_FT_DIR });
- bool success = write_directory_inode(inode->identifier().index(), move(entries));
+ bool success = static_cast<Ext2FSInode&>(*inode).write_directory(entries);
ASSERT(success);
auto parent_inode = get_inode(parent_id);
diff --git a/Kernel/FileSystem/Ext2FileSystem.h b/Kernel/FileSystem/Ext2FileSystem.h
index ac7fff9946..ead3e9ec62 100644
--- a/Kernel/FileSystem/Ext2FileSystem.h
+++ b/Kernel/FileSystem/Ext2FileSystem.h
@@ -43,6 +43,7 @@ private:
virtual KResult chown(uid_t, gid_t) override;
virtual KResult truncate(off_t) override;
+ bool write_directory(const Vector<FS::DirectoryEntry>&);
void populate_lookup_cache() const;
bool resize(qword);
@@ -103,8 +104,6 @@ private:
Vector<BlockIndex> block_list_for_inode(const ext2_inode&, bool include_block_list_blocks = false) const;
bool write_block_list_for_inode(InodeIndex, ext2_inode&, const Vector<BlockIndex>&);
- bool add_inode_to_directory(InodeIndex parent, InodeIndex child, const String& name, byte file_type, int& error);
- bool write_directory_inode(InodeIndex, Vector<DirectoryEntry>&&);
bool get_inode_allocation_state(InodeIndex) const;
bool set_inode_allocation_state(InodeIndex, bool);
bool set_block_allocation_state(BlockIndex, bool);