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feat(kernel/vfs): add AddRootAt, SetRootAt, RemoveRoot & RootExists functions

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Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
EnderIce2
2025-04-04 11:51:47 +00:00
parent 120d67fb1a
commit b232dc6b40
3 changed files with 52 additions and 1 deletions
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4
Fennix Kernel.code-workspace
View File

@ -37,7 +37,9 @@
"kernel/drivers",
"kernel/elf",
"kernel/scheduler",
"kernel/tty"
"kernel/tty",
"kernel/std",
"kernel/vfs"
]
}
}

4
Kernel/include/filesystem.hpp
View File

@ -161,7 +161,11 @@ namespace vfs
int UnregisterFileSystem(dev_t Device);
void AddRoot(Inode *Root);
void AddRootAt(Inode *Root, size_t Index);
bool SetRootAt(Inode *Root, size_t Index);
void RemoveRoot(Inode *Root);
FileNode *GetRoot(size_t Index);
bool RootExists(size_t Index);
FileNode *Create(FileNode *Parent, const char *Name, mode_t Mode);
FileNode *ForceCreate(FileNode *Parent, const char *Name, mode_t Mode);

45
Kernel/storage/filesystem.cpp
View File

@ -37,6 +37,43 @@ namespace vfs
FileSystemRoots->Children.push_back(Root);
}
void Virtual::AddRootAt(Inode *Root, size_t Index)
{
SmartLock(VirtualLock);
if (Index >= FileSystemRoots->Children.size())
FileSystemRoots->Children.resize(Index + 1);
FileSystemRoots->Children[Index] = Root;
if (FileSystemRoots->Children[Index] == nullptr)
FileSystemRoots->Children[Index] = Root;
else
debug("Root %ld already exists", Index);
}
bool Virtual::SetRootAt(Inode *Root, size_t Index)
{
SmartLock(VirtualLock);
assert(Index < FileSystemRoots->Children.size());
if (FileSystemRoots->Children[Index] != nullptr)
return false;
FileSystemRoots->Children[Index] = Root;
return true;
}
void Virtual::RemoveRoot(Inode *Root)
{
SmartLock(VirtualLock);
for (size_t i = 0; i < FileSystemRoots->Children.size(); i++)
{
if (FileSystemRoots->Children[i] != Root)
continue;
FileSystemRoots->Children[i] = nullptr;
break;
}
debug("removed root %p", Root);
}
FileNode *Virtual::GetRoot(size_t Index)
{
assert(Index < FileSystemRoots->Children.size());
@ -46,6 +83,7 @@ namespace vfs
return it->second;
Inode *rootNode = FileSystemRoots->Children[Index];
assert(rootNode != nullptr);
char rootName[128]{};
snprintf(rootName, sizeof(rootName), "\x06root-%ld\x06", Index);
FileNode *ret = this->CreateCacheNode(nullptr, rootNode, rootName, 0);
@ -53,6 +91,13 @@ namespace vfs
return ret;
}
bool Virtual::RootExists(size_t Index)
{
if (Index >= FileSystemRoots->Children.size())
return false;
return FileSystemRoots->Children[Index] != nullptr;
}
FileNode *Virtual::Create(FileNode *Parent, const char *Name, mode_t Mode)
{
FileNode *existingNode = this->GetByPath(Name, Parent);