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Move readEntireInode() up to FileSystem (from ext2.)

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It's just a wrapper around multiple calls to readInodeBytes() now.
This commit is contained in:
Andreas Kling 2018-10-15 00:16:14 +02:00
parent 0286b5ea48
commit 9528edab92
Notes: sideshowbarker 2024-07-19 18:48:03 +09:00
9 changed files with 39 additions and 52 deletions
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34
VirtualFileSystem/FileSystem.cpp
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@ -29,7 +29,7 @@ FileSystem* FileSystem::fromID(dword id)
return nullptr;
}
InodeIdentifier FileSystem::childOfDirectoryInodeWithName(InodeIdentifier inode, const String& name)
InodeIdentifier FileSystem::childOfDirectoryInodeWithName(InodeIdentifier inode, const String& name) const
{
InodeIdentifier foundInode;
enumerateDirectoryInode(inode, [&] (const DirectoryEntry& entry) {
@ -42,3 +42,35 @@ InodeIdentifier FileSystem::childOfDirectoryInodeWithName(InodeIdentifier inode,
return foundInode;
}
ByteBuffer FileSystem::readEntireInode(InodeIdentifier inode) const
{
ASSERT(inode.fileSystemID() == id());
auto metadata = inodeMetadata(inode);
if (!metadata.isValid()) {
printf("[fs] readInode: metadata lookup for inode %u failed\n", inode.index());
return nullptr;
}
auto contents = ByteBuffer::createUninitialized(metadata.size);
Unix::ssize_t nread;
byte buffer[512];
byte* out = contents.pointer();
Unix::off_t offset = 0;
for (;;) {
nread = readInodeBytes(inode, offset, sizeof(buffer), buffer);
if (nread <= 0)
break;
memcpy(out, buffer, nread);
out += nread;
offset += nread;
}
if (nread < 0) {
printf("[fs] readInode: ERROR: %d\n", nread);
return nullptr;
}
return contents;
}