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fix(kernel/vfs): 🎉 a complete rewrite of the vfs

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This is the fourth time re-writing the VFS, hope this will be the last. Tried to make it as modular as possible so this won't be necessary in the future. 🙏

This change required the entire kernel code to be modified.
This commit is contained in:
EnderIce2
2025-05-13 15:59:12 +00:00
parent 83a7f83f81
commit 557c7e6235
83 changed files with 3252 additions and 2487 deletions
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40
Kernel/exec/spawn.cpp
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@ -35,7 +35,13 @@ namespace Execute
Tasking::TaskCompatibility Compatibility,
bool Critical)
{
FileNode *fd = fs->GetByPath(Path, nullptr);
if (Parent == nullptr)
{
debug("no parent specified, using current process");
Parent = thisProcess;
}
Node fd = fs->Lookup(Parent->Info.RootNode, Path);
if (fd == nullptr)
return -ENOENT;
@ -44,8 +50,8 @@ namespace Execute
if (fd->IsSymbolicLink())
{
char buffer[512];
fd->ReadLink(buffer, sizeof(buffer));
fd = fs->GetByPath(buffer, fd->Parent);
fs->ReadLink(fd, buffer, sizeof(buffer));
fd = fs->Lookup(fd->Parent, buffer);
if (fd == nullptr)
return -ENOENT;
}
@ -61,7 +67,7 @@ namespace Execute
const char *BaseName;
cwk_path_get_basename(Path, &BaseName, nullptr);
Elf32_Ehdr ELFHeader;
fd->Read(&ELFHeader, sizeof(Elf32_Ehdr), 0);
fs->Read(fd, &ELFHeader, sizeof(Elf32_Ehdr), 0);
switch (ELFHeader.e_machine)
{
@ -108,7 +114,6 @@ namespace Execute
PCB *Process;
if (Fork)
{
assert(Parent != nullptr);
CriticalSection cs;
Process = Parent;
@ -124,17 +129,13 @@ namespace Execute
}
else
{
if (Parent == nullptr)
Parent = thisProcess;
Process = TaskManager->CreateProcess(Parent, BaseName,
TaskExecutionMode::User,
false, 0, 0);
Process = TaskManager->CreateProcess(Parent, BaseName, User, false, 0, 0);
Process->Info.Compatibility = Compatibility;
Process->Info.Architecture = Arch;
}
Process->SetWorkingDirectory(fs->GetByPath(Path, nullptr)->Parent);
Node cwdNode = fs->Lookup(Parent->Info.RootNode, Path);
Process->SetWorkingDirectory(fs->Convert(cwdNode->Parent));
Process->SetExe(Path);
ELFObject *obj = new ELFObject(Path, Process, argv, envp);
@ -148,9 +149,9 @@ namespace Execute
vfs::FileDescriptorTable *pfdt = Parent->FileDescriptors;
vfs::FileDescriptorTable *fdt = Process->FileDescriptors;
auto ForkStdio = [pfdt, fdt](FileNode *SearchNode)
auto ForkStdio = [pfdt, fdt](Node SearchNode)
{
if (unlikely(SearchNode == nullptr))
if (unlikely(SearchNode.get() == nullptr))
return false;
for (const auto &ffd : pfdt->FileMap)
@ -158,12 +159,11 @@ namespace Execute
if (ffd.second.Flags & O_CLOEXEC)
continue;
if (ffd.second.Node == SearchNode)
{
fdt->usr_open(ffd.second.Node->Path.c_str(),
ffd.second.Flags, ffd.second.Mode);
return true;
}
if (ffd.second.node.get() != SearchNode.get())
continue;
fdt->usr_open(ffd.second.node->Path.c_str(), ffd.second.Flags, ffd.second.Mode);
return true;
}
return false;
};