diff --git a/Kernel/include/filesystem/ramfs.hpp b/Kernel/include/filesystem/ramfs.hpp
new file mode 100644
index 00000000..f94c3c4c
--- /dev/null
+++ b/Kernel/include/filesystem/ramfs.hpp
@@ -0,0 +1,149 @@
+/*
+ This file is part of Fennix Kernel.
+
+ Fennix Kernel is free software: you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of
+ the License, or (at your option) any later version.
+
+ Fennix Kernel is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Fennix Kernel. If not, see .
+*/
+
+#pragma once
+
+#include
+#include
+
+namespace vfs
+{
+ class RAMFS
+ {
+ public:
+ class InodeBuffer
+ {
+ public:
+ void *Data = nullptr;
+ size_t DataSize = 0;
+
+ void Allocate(size_t size, bool extend = false, bool atEnd = true)
+ {
+ if (extend == false)
+ {
+ if (Data)
+ Free();
+ Data = kmalloc(size);
+ if (!Data)
+ throw std::bad_alloc();
+ DataSize = size;
+ }
+ else
+ {
+ if (Data == nullptr)
+ {
+ Data = kmalloc(size);
+ if (!Data)
+ throw std::bad_alloc();
+ DataSize = size;
+ }
+ else
+ {
+ size_t newSize = DataSize + size;
+ void *newData = kmalloc(newSize);
+ if (!newData)
+ throw std::bad_alloc();
+
+ if (atEnd)
+ memcpy(newData, Data, DataSize);
+ else
+ memcpy(static_cast(newData) + size, Data, DataSize);
+
+ kfree(Data);
+ Data = newData;
+ DataSize = newSize;
+ }
+ }
+ }
+
+ void Free()
+ {
+ if (Data)
+ {
+ kfree(Data);
+ Data = nullptr;
+ DataSize = 0;
+ }
+ }
+
+ bool IsAllocated() const
+ {
+ return Data != nullptr;
+ }
+
+ InodeBuffer() = default;
+ ~InodeBuffer() { Free(); }
+ };
+
+ class RAMFSInode
+ {
+ public:
+ struct Inode Node;
+ RAMFSInode *Parent = nullptr;
+ std::string Name;
+ kstat Stat{};
+ mode_t Mode = 0;
+ InodeBuffer Buffer;
+ std::string SymLink;
+ std::vector Children;
+
+ void AddChild(RAMFSInode *child)
+ {
+ Children.push_back(child);
+ child->Parent = this;
+ }
+
+ void RemoveChild(RAMFSInode *child)
+ {
+ auto it = std::find(Children.begin(), Children.end(), child);
+ if (it != Children.end())
+ {
+ Children.erase(it);
+ child->Parent = nullptr;
+ }
+ }
+
+ RAMFSInode() = default;
+ ~RAMFSInode()
+ {
+ for (auto child : Children)
+ delete child;
+ }
+ };
+
+ private:
+ std::unordered_map Files;
+
+ public:
+ dev_t DeviceID = -1;
+ ino_t NextInode = 0;
+
+ int Lookup(struct Inode *Parent, const char *Name, struct Inode **Result);
+ int Create(struct Inode *Parent, const char *Name, mode_t Mode, struct Inode **Result);
+ ssize_t Read(struct Inode *Node, void *Buffer, size_t Size, off_t Offset);
+ ssize_t Write(struct Inode *Node, const void *Buffer, size_t Size, off_t Offset);
+ ssize_t ReadDir(struct Inode *Node, struct kdirent *Buffer, size_t Size, off_t Offset, off_t Entries);
+ int SymLink(struct Inode *Node, const char *Name, const char *Target, struct Inode **Result);
+ ssize_t ReadLink(struct Inode *Node, char *Buffer, size_t Size);
+ int Stat(struct Inode *Node, struct kstat *Stat);
+
+ RAMFS() = default;
+ ~RAMFS() = default;
+ };
+}
+
+bool MountRAMFS(Inode *Parent, const char *Name, size_t Index)
diff --git a/Kernel/storage/fs/ramfs.cpp b/Kernel/storage/fs/ramfs.cpp
new file mode 100644
index 00000000..cb83e622
--- /dev/null
+++ b/Kernel/storage/fs/ramfs.cpp
@@ -0,0 +1,421 @@
+/*
+ This file is part of Fennix Kernel.
+
+ Fennix Kernel is free software: you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of
+ the License, or (at your option) any later version.
+
+ Fennix Kernel is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Fennix Kernel. If not, see .
+*/
+
+#include
+#include
+#include
+#include
+
+#include "../../kernel.h"
+
+namespace vfs
+{
+ int RAMFS::Lookup(struct Inode *_Parent, const char *Name, struct Inode **Result)
+ {
+ auto Parent = (RAMFSInode *)_Parent;
+
+ const char *basename;
+ size_t length;
+ cwk_path_get_basename(Name, &basename, &length);
+ if (basename == NULL)
+ {
+ if (strcmp(Name, "/") == 0)
+ {
+ auto &it = Files.at(0);
+ *Result = &it->Node;
+ return 0;
+ }
+
+ error("Invalid name %s", Name);
+ return -EINVAL;
+ }
+
+ if (Parent)
+ {
+ for (auto &&child : Parent->Children)
+ {
+ if (strcmp(child->Name.c_str(), basename) != 0)
+ continue;
+
+ *Result = &child->Node;
+ return 0;
+ }
+
+ return -ENOENT;
+ }
+
+ for (auto &&i : Files)
+ {
+ RAMFSInode *node = i.second;
+ if (strcmp(node->Name.c_str(), basename) != 0)
+ continue;
+ *Result = &i.second->Node;
+ return 0;
+ }
+
+ return -ENOENT;
+ }
+
+ int RAMFS::Create(struct Inode *_Parent, const char *Name, mode_t Mode, struct Inode **Result)
+ {
+ RAMFSInode *Parent = (RAMFSInode *)_Parent;
+
+ Inode inode{};
+ inode.Mode = Mode;
+ inode.Device = this->DeviceID;
+ inode.RawDevice = 0;
+ inode.Index = NextInode;
+ inode.Offset = 0;
+ inode.PrivateData = this;
+ inode.Flags = I_FLAG_CACHE_KEEP;
+
+ const char *basename;
+ size_t length;
+ cwk_path_get_basename(Name, &basename, &length);
+
+ RAMFSInode *node = new RAMFSInode;
+ node->Name.assign(basename, length);
+ node->Mode = Mode;
+
+ auto &&file = Files.insert(std::make_pair(NextInode, node));
+ assert(file.second == true);
+ *Result = &file.first->second->Node;
+ if (Parent)
+ Parent->AddChild(node);
+ NextInode++;
+ return 0;
+ }
+
+ ssize_t RAMFS::Read(struct Inode *Node, void *Buffer, size_t Size, off_t Offset)
+ {
+ auto fileItr = Files.find(Node->Index);
+ assert(fileItr != Files.end());
+
+ RAMFSInode *node = fileItr->second;
+ size_t fileSize = node->Stat.Size;
+
+ if (Size <= 0)
+ {
+ debug("Size is less than or equal to 0");
+ Size = fileSize;
+ }
+
+ if ((size_t)Offset > fileSize)
+ {
+ debug("Offset %d is greater than file size %d", Offset, fileSize);
+ return 0;
+ }
+
+ if ((fileSize - Offset) == 0)
+ {
+ debug("Offset %d is equal to file size %d", Offset, fileSize);
+ return 0; /* EOF */
+ }
+
+ if ((size_t)Offset + Size > fileSize)
+ {
+ debug("Offset %d + Size %d is greater than file size %d",
+ Offset, Size, fileSize);
+ Size = fileSize;
+ }
+
+ memcpy(Buffer, node->Buffer.Data, Size);
+ return Size;
+ }
+
+ ssize_t RAMFS::Write(struct Inode *Node, const void *Buffer, size_t Size, off_t Offset)
+ {
+ auto fileItr = Files.find(Node->Index);
+ assert(fileItr != Files.end());
+
+ RAMFSInode *node = fileItr->second;
+
+ if (node->Buffer.IsAllocated() == false)
+ node->Buffer.Allocate(node->Stat.Size);
+
+ size_t fileSize = node->Stat.Size;
+
+ if (Size <= 0)
+ {
+ debug("Size is less than or equal to 0");
+ return -EINVAL;
+ }
+
+ if ((size_t)Offset > fileSize)
+ {
+ debug("Offset %d is greater than file size %d", Offset, fileSize);
+ node->Buffer.Allocate(Offset + Size, true, true);
+ }
+
+ if ((fileSize - Offset) == 0)
+ {
+ debug("Offset %d is equal to file size %d", Offset, fileSize);
+ node->Buffer.Allocate(Size, true, true);
+ }
+
+ if ((size_t)Offset + Size > fileSize)
+ {
+ debug("Offset %d + Size %d is greater than file size %d",
+ Offset, Size, fileSize);
+ node->Buffer.Allocate(Offset + Size, true, true);
+ }
+
+ memcpy(static_cast(node->Buffer.Data) + Offset, Buffer, Size);
+ node->Stat.Size = Size;
+ return Size;
+ }
+
+ __no_sanitize("alignment")
+ ssize_t RAMFS::ReadDir(struct Inode *_Node, struct kdirent *Buffer, size_t Size, off_t Offset, off_t Entries)
+ {
+ /* FIXME: FIX ALIGNMENT FOR DIRENT! */
+ auto Node = (RAMFSInode *)_Node;
+
+ off_t realOffset = Offset;
+
+ size_t totalSize = 0;
+ uint16_t reclen = 0;
+ struct kdirent *ent = nullptr;
+
+ if (Offset == 0)
+ {
+ reclen = (uint16_t)(offsetof(struct kdirent, d_name) + strlen(".") + 1);
+ if (totalSize + reclen >= Size)
+ return -EINVAL;
+
+ ent = (struct kdirent *)((uintptr_t)Buffer + totalSize);
+ ent->d_ino = Node->Node.Index;
+ ent->d_off = Offset++;
+ ent->d_reclen = reclen;
+ ent->d_type = DT_DIR;
+ strcpy(ent->d_name, ".");
+ totalSize += reclen;
+ }
+
+ if (Offset <= 1)
+ {
+ reclen = (uint16_t)(offsetof(struct kdirent, d_name) + strlen("..") + 1);
+ if (totalSize + reclen >= Size)
+ {
+ if (realOffset == 1)
+ return -EINVAL;
+ return totalSize;
+ }
+
+ ent = (struct kdirent *)((uintptr_t)Buffer + totalSize);
+
+ if (Node->Parent)
+ ent->d_ino = Node->Parent->Node.Index;
+ else
+ {
+ warn("Parent is null for %s", Node->Name.c_str());
+ ent->d_ino = Node->Node.Index;
+ }
+ ent->d_off = Offset++;
+ ent->d_reclen = reclen;
+ ent->d_type = DT_DIR;
+ strcpy(ent->d_name, "..");
+ totalSize += reclen;
+ }
+
+ if (!S_ISDIR(Node->Node.Mode))
+ return -ENOTDIR;
+
+ if ((Offset >= 2 ? (Offset - 2) : Offset) > (off_t)Node->Children.size())
+ return -EINVAL;
+
+ off_t entries = 0;
+ for (const auto &var : Node->Children)
+ {
+ if (var->Node.Offset < Offset)
+ continue;
+
+ if (entries >= Entries)
+ break;
+
+ reclen = (uint16_t)(offsetof(struct kdirent, d_name) + strlen(var->Name.c_str()) + 1);
+
+ if (totalSize + reclen >= Size)
+ break;
+
+ ent = (struct kdirent *)((uintptr_t)Buffer + totalSize);
+ ent->d_ino = var->Node.Index;
+ ent->d_off = var->Node.Offset;
+ ent->d_reclen = reclen;
+
+ if (S_ISREG(var->Stat.Mode))
+ ent->d_type = DT_REG;
+ else if (S_ISDIR(var->Stat.Mode))
+ ent->d_type = DT_DIR;
+ else if (S_ISLNK(var->Stat.Mode))
+ ent->d_type = DT_LNK;
+ else if (S_ISCHR(var->Stat.Mode))
+ ent->d_type = DT_CHR;
+ else if (S_ISBLK(var->Stat.Mode))
+ ent->d_type = DT_BLK;
+ else if (S_ISFIFO(var->Stat.Mode))
+ ent->d_type = DT_FIFO;
+ else if (S_ISSOCK(var->Stat.Mode))
+ ent->d_type = DT_SOCK;
+ else
+ ent->d_type = DT_UNKNOWN;
+
+ strncpy(ent->d_name, var->Name.c_str(), strlen(var->Name.c_str()));
+ totalSize += reclen;
+ entries++;
+ }
+
+ if (totalSize + sizeof(struct kdirent) >= Size)
+ return totalSize;
+
+ ent = (struct kdirent *)((uintptr_t)Buffer + totalSize);
+ ent->d_ino = 0;
+ ent->d_off = 0;
+ ent->d_reclen = 0;
+ ent->d_type = DT_UNKNOWN;
+ ent->d_name[0] = '\0';
+ return totalSize;
+ }
+
+ int RAMFS::SymLink(struct Inode *Node, const char *Name, const char *Target, struct Inode **Result)
+ {
+ int ret = this->Create(Node, Name, S_IFLNK, Result);
+ if (ret < 0)
+ return ret;
+
+ RAMFSInode *node = (RAMFSInode *)*Result;
+ node->SymLink.assign(Target, strlen(Target));
+ return 0;
+ }
+
+ ssize_t RAMFS::ReadLink(struct Inode *Node, char *Buffer, size_t Size)
+ {
+ auto fileItr = Files.find(Node->Index);
+ assert(fileItr != Files.end());
+
+ RAMFSInode *node = fileItr->second;
+
+ if (node->SymLink.size() > Size)
+ Size = node->SymLink.size();
+
+ strncpy(Buffer, node->SymLink.data(), Size);
+ debug("Read link %d bytes from %d: \"%s\"", Size, Node->Index, Buffer);
+ return Size;
+ }
+
+ int RAMFS::Stat(struct Inode *Node, struct kstat *Stat)
+ {
+ auto fileItr = Files.find(Node->Index);
+ assert(fileItr != Files.end());
+
+ RAMFSInode *node = fileItr->second;
+ *Stat = node->Stat;
+ return 0;
+ }
+}
+
+O2 int __ramfs_Lookup(struct Inode *Parent, const char *Name, struct Inode **Result)
+{
+ return ((vfs::RAMFS *)Parent->PrivateData)->Lookup(Parent, Name, Result);
+}
+
+O2 int __ramfs_Create(struct Inode *Parent, const char *Name, mode_t Mode, struct Inode **Result)
+{
+ return ((vfs::RAMFS *)Parent->PrivateData)->Create(Parent, Name, Mode, Result);
+}
+
+O2 ssize_t __ramfs_Read(struct Inode *Node, void *Buffer, size_t Size, off_t Offset)
+{
+ return ((vfs::RAMFS *)Node->PrivateData)->Read(Node, Buffer, Size, Offset);
+}
+
+O2 ssize_t __ramfs_Write(struct Inode *Node, const void *Buffer, size_t Size, off_t Offset)
+{
+ return ((vfs::RAMFS *)Node->PrivateData)->Write(Node, Buffer, Size, Offset);
+}
+
+O2 ssize_t __ramfs_Readdir(struct Inode *Node, struct kdirent *Buffer, size_t Size, off_t Offset, off_t Entries)
+{
+ return ((vfs::RAMFS *)Node->PrivateData)->ReadDir(Node, Buffer, Size, Offset, Entries);
+}
+
+O2 int __ramfs_SymLink(Inode *Parent, const char *Name, const char *Target, Inode **Result)
+{
+ return ((vfs::RAMFS *)Parent->PrivateData)->SymLink(Parent, Name, Target, Result);
+}
+
+O2 ssize_t __ramfs_ReadLink(Inode *Node, char *Buffer, size_t Size)
+{
+ return ((vfs::RAMFS *)Node->PrivateData)->ReadLink(Node, Buffer, Size);
+}
+
+O2 int __ramfs_Stat(struct Inode *Node, kstat *Stat)
+{
+ return ((vfs::RAMFS *)Node->PrivateData)->Stat(Node, Stat);
+}
+
+O2 int __ramfs_DestroyInode(FileSystemInfo *Info, Inode *Node)
+{
+ vfs::RAMFS::RAMFSInode *inode = (vfs::RAMFS::RAMFSInode *)Node;
+ delete inode;
+ return 0;
+}
+
+O2 int __ramfs_Destroy(FileSystemInfo *fsi)
+{
+ assert(fsi->PrivateData);
+ delete (vfs::RAMFS *)fsi->PrivateData;
+ delete fsi;
+ return 0;
+}
+
+bool MountRAMFS(Inode *Parent, const char *Name, size_t Index)
+{
+ vfs::RAMFS *ramfs = new vfs::RAMFS;
+ ramfs->DeviceID = fs->EarlyReserveDevice();
+
+ if (Parent == nullptr)
+ {
+ ramfs->Create(nullptr, Name, S_IFDIR | 0755, &Parent);
+ if (Parent == nullptr)
+ {
+ error("Failed to create root inode");
+ delete ramfs;
+ return false;
+ }
+ }
+
+ FileSystemInfo *fsi = new FileSystemInfo;
+ fsi->Name = "ramfs";
+ fsi->RootName = "/";
+ fsi->Flags = I_FLAG_ROOT | I_FLAG_MOUNTPOINT | I_FLAG_CACHE_KEEP;
+ fsi->SuperOps.DeleteInode = __ramfs_DestroyInode;
+ fsi->SuperOps.Destroy = __ramfs_Destroy;
+ fsi->Ops.Lookup = __ramfs_Lookup;
+ fsi->Ops.Create = __ramfs_Create;
+ fsi->Ops.Read = __ramfs_Read;
+ fsi->Ops.Write = __ramfs_Write;
+ fsi->Ops.ReadDir = __ramfs_Readdir;
+ fsi->Ops.SymLink = __ramfs_SymLink;
+ fsi->Ops.ReadLink = __ramfs_ReadLink;
+ fsi->Ops.Stat = __ramfs_Stat;
+ fsi->PrivateData = ramfs;
+
+ fs->LateRegisterFileSystem(ramfs->DeviceID, fsi, Parent);
+ fs->AddRootAt(Parent, Index);
+ return true;
+}