Initial commit: SUB-OS 64-Bit Production Monolithic Operating System with LazyBox userland suite

include/fs/devfs.h

@@ -0,0 +1,10 @@
+#ifndef _FS_DEVFS_H
+#define _FS_DEVFS_H
+
+#include "vfs.h"
+
+void devfs_init(void);
+vfs_node_t* devfs_get_root(void);
+int devfs_register_device(const char* name, vfs_node_t* dev_node);
+
+#endif // _FS_DEVFS_H

include/fs/procfs.h

@@ -0,0 +1,9 @@
+#ifndef _FS_PROCFS_H
+#define _FS_PROCFS_H
+
+#include "vfs.h"
+
+void procfs_init(void);
+vfs_node_t* procfs_get_root(void);
+
+#endif // _FS_PROCFS_H

include/fs/ramfs.h

@@ -0,0 +1,10 @@
+#ifndef _FS_RAMFS_H
+#define _FS_RAMFS_H
+
+#include "vfs.h"
+
+vfs_node_t* ramfs_create_root(void);
+vfs_node_t* ramfs_add_file(vfs_node_t* parent, const char* name, const void* content, size_t size);
+vfs_node_t* ramfs_add_dir(vfs_node_t* parent, const char* name);
+
+#endif // _FS_RAMFS_H

include/fs/vfs.h

@@ -0,0 +1,85 @@
+#ifndef _FS_VFS_H
+#define _FS_VFS_H
+
+#include <kernel/types.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#define FS_FILE        0x01
+#define FS_DIRECTORY   0x02
+#define FS_CHARDEVICE  0x04
+#define FS_BLOCKDEVICE 0x08
+#define FS_PIPE        0x10
+#define FS_SYMLINK     0x20
+#define FS_MOUNTPOINT  0x40
+
+#define O_RDONLY 0x0000
+#define O_WRONLY 0x0001
+#define O_RDWR   0x0002
+#define O_CREAT  0x0040
+#define O_TRUNC  0x0200
+#define O_APPEND 0x0400
+
+#define SEEK_SET 0
+#define SEEK_CUR 1
+#define SEEK_END 2
+
+struct vfs_node;
+
+typedef ssize_t (*vfs_read_fn_t)(struct vfs_node* node, off_t offset, size_t size, uint8_t* buffer);
+typedef ssize_t (*vfs_write_fn_t)(struct vfs_node* node, off_t offset, size_t size, const uint8_t* buffer);
+typedef int     (*vfs_open_fn_t)(struct vfs_node* node, uint32_t flags);
+typedef int     (*vfs_close_fn_t)(struct vfs_node* node);
+typedef struct vfs_dirent* (*vfs_readdir_fn_t)(struct vfs_node* node, uint32_t index);
+typedef struct vfs_node*   (*vfs_finddir_fn_t)(struct vfs_node* node, const char* name);
+typedef int     (*vfs_mkdir_fn_t)(struct vfs_node* node, const char* name, mode_t mode);
+typedef int     (*vfs_create_fn_t)(struct vfs_node* node, const char* name, mode_t mode);
+
+typedef struct vfs_node {
+    char name[128];
+    uint32_t flags;
+    uint32_t mode;
+    uid_t uid;
+    gid_t gid;
+    size_t length;
+    ino_t inode;
+
+    vfs_read_fn_t    read;
+    vfs_write_fn_t   write;
+    vfs_open_fn_t    open;
+    vfs_close_fn_t   close;
+    vfs_readdir_fn_t readdir;
+    vfs_finddir_fn_t finddir;
+    vfs_mkdir_fn_t   mkdir;
+    vfs_create_fn_t  create;
+
+    struct vfs_node* ptr; // Used for mountpoints / device nodes
+} vfs_node_t;
+
+typedef struct vfs_dirent {
+    char name[128];
+    ino_t inode;
+    uint32_t type;
+} vfs_dirent_t;
+
+typedef struct {
+    vfs_node_t* node;
+    off_t offset;
+    uint32_t flags;
+} file_descriptor_t;
+
+void vfs_init(void);
+vfs_node_t* vfs_namei(const char* path);
+int vfs_open(const char* path, uint32_t flags);
+ssize_t vfs_read(int fd, void* buffer, size_t size);
+ssize_t vfs_write(int fd, const void* buffer, size_t size);
+off_t vfs_lseek(int fd, off_t offset, int whence);
+int vfs_close(int fd);
+int vfs_mkdir(const char* path, mode_t mode);
+int vfs_create(const char* path, mode_t mode);
+
+vfs_node_t* vfs_get_root(void);
+int vfs_mount(const char* path, vfs_node_t* fs_root);
+
+#endif // _FS_VFS_H