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Kernel: Make Inode::traverse_as_directory() callback return ErrorOr

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This allows us to propagate errors from inside the callback with TRY().
This commit is contained in:
Andreas Kling 2021-11-10 15:42:39 +01:00
parent a15ed8743d
commit 5ce753b74d
31 changed files with 154 additions and 151 deletions
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16
Kernel/FileSystem/VirtualFileSystem.cpp
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@ -162,9 +162,9 @@ bool VirtualFileSystem::is_vfs_root(InodeIdentifier inode) const
return inode == root_inode_id();
}
ErrorOr<void> VirtualFileSystem::traverse_directory_inode(Inode& dir_inode, Function<bool(FileSystem::DirectoryEntryView const&)> callback)
ErrorOr<void> VirtualFileSystem::traverse_directory_inode(Inode& dir_inode, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback)
{
return dir_inode.traverse_as_directory([&](auto& entry) {
return dir_inode.traverse_as_directory([&](auto& entry) -> ErrorOr<void> {
InodeIdentifier resolved_inode;
if (auto mount = find_mount_for_host(entry.inode))
resolved_inode = mount->guest().identifier();
@ -179,8 +179,8 @@ ErrorOr<void> VirtualFileSystem::traverse_directory_inode(Inode& dir_inode, Func
VERIFY(mount->host());
resolved_inode = mount->host()->identifier();
}
callback({ entry.name, resolved_inode, entry.file_type });
return true;
TRY(callback({ entry.name, resolved_inode, entry.file_type }));
return {};
});
}
@ -467,9 +467,9 @@ ErrorOr<void> VirtualFileSystem::rename(StringView old_path, StringView new_path
if (old_inode.index() != new_inode.index() && old_inode.is_directory() && new_inode.is_directory()) {
size_t child_count = 0;
TRY(new_inode.traverse_as_directory([&child_count](auto&) {
TRY(new_inode.traverse_as_directory([&child_count](auto&) -> ErrorOr<void> {
++child_count;
return child_count <= 2;
return {};
}));
if (child_count > 2)
return ENOTEMPTY;
@ -710,9 +710,9 @@ ErrorOr<void> VirtualFileSystem::rmdir(StringView path, Custody& base)
}
size_t child_count = 0;
TRY(inode.traverse_as_directory([&child_count](auto&) {
TRY(inode.traverse_as_directory([&child_count](auto&) -> ErrorOr<void> {
++child_count;
return true;
return {};
}));
if (child_count != 2)