154 lines
5.3 KiB
C
154 lines
5.3 KiB
C
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <bits/dirent.h>
|
|
|
|
#define PATH_SEPARATOR '/'
|
|
#define PATH_SEPARATOR_STRING "/"
|
|
#define PATH_UP ".."
|
|
#define PATH_DOT "."
|
|
|
|
#define O_RDONLY 0x0000
|
|
#define O_WRONLY 0x0001
|
|
#define O_RDWR 0x0002
|
|
#define O_APPEND 0x0008
|
|
#define O_CREAT 0x0200
|
|
#define O_TRUNC 0x0400
|
|
#define O_EXCL 0x0800
|
|
#define O_NOFOLLOW 0x1000
|
|
#define O_PATH 0x2000
|
|
#define O_NONBLOCK 0x4000
|
|
#define O_DIRECTORY 0x8000
|
|
|
|
#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 _IFMT 0170000 /* type of file */
|
|
#define _IFDIR 0040000 /* directory */
|
|
#define _IFCHR 0020000 /* character special */
|
|
#define _IFBLK 0060000 /* block special */
|
|
#define _IFREG 0100000 /* regular */
|
|
#define _IFLNK 0120000 /* symbolic link */
|
|
#define _IFSOCK 0140000 /* socket */
|
|
#define _IFIFO 0010000 /* fifo */
|
|
|
|
struct fs_node;
|
|
|
|
typedef uint64_t (*read_type_t) (struct fs_node *, uint64_t, uint64_t, uint8_t *);
|
|
typedef uint64_t (*write_type_t) (struct fs_node *, uint64_t, uint64_t, uint8_t *);
|
|
typedef void (*open_type_t) (struct fs_node *, unsigned int flags);
|
|
typedef void (*close_type_t) (struct fs_node *);
|
|
typedef struct dirent *(*readdir_type_t) (struct fs_node *, uint64_t);
|
|
typedef struct fs_node *(*finddir_type_t) (struct fs_node *, char *name);
|
|
typedef int (*create_type_t) (struct fs_node *, char *name, uint16_t permission);
|
|
typedef int (*unlink_type_t) (struct fs_node *, char *name);
|
|
typedef int (*mkdir_type_t) (struct fs_node *, char *name, uint16_t permission);
|
|
typedef int (*ioctl_type_t) (struct fs_node *, int request, void * argp);
|
|
typedef int (*get_size_type_t) (struct fs_node *);
|
|
typedef int (*chmod_type_t) (struct fs_node *, int mode);
|
|
typedef int (*symlink_type_t) (struct fs_node *, char * name, char * value);
|
|
typedef int (*readlink_type_t) (struct fs_node *, char * buf, size_t size);
|
|
typedef int (*selectcheck_type_t) (struct fs_node *);
|
|
typedef int (*selectwait_type_t) (struct fs_node *, void * process);
|
|
typedef int (*chown_type_t) (struct fs_node *, int, int);
|
|
typedef void (*truncate_type_t) (struct fs_node *);
|
|
|
|
typedef struct fs_node {
|
|
char name[256]; /* The filename. */
|
|
void * device; /* Device object (optional) */
|
|
uint64_t mask; /* The permissions mask. */
|
|
uid_t uid; /* The owning user. */
|
|
uid_t gid; /* The owning group. */
|
|
uint64_t flags; /* Flags (node type, etc). */
|
|
uint64_t inode; /* Inode number. */
|
|
uint64_t length; /* Size of the file, in byte. */
|
|
uint64_t impl; /* Used to keep track which fs it belongs to. */
|
|
uint64_t open_flags; /* Flags passed to open (read/write/append, etc.) */
|
|
|
|
/* times */
|
|
uint64_t atime; /* Accessed */
|
|
uint64_t mtime; /* Modified */
|
|
uint64_t ctime; /* Created */
|
|
|
|
/* File operations */
|
|
read_type_t read;
|
|
write_type_t write;
|
|
open_type_t open;
|
|
close_type_t close;
|
|
readdir_type_t readdir;
|
|
finddir_type_t finddir;
|
|
create_type_t create;
|
|
mkdir_type_t mkdir;
|
|
ioctl_type_t ioctl;
|
|
get_size_type_t get_size;
|
|
chmod_type_t chmod;
|
|
unlink_type_t unlink;
|
|
symlink_type_t symlink;
|
|
readlink_type_t readlink;
|
|
truncate_type_t truncate;
|
|
|
|
struct fs_node *ptr; /* Alias pointer, for symlinks. */
|
|
int64_t refcount;
|
|
uint64_t nlink;
|
|
|
|
selectcheck_type_t selectcheck;
|
|
selectwait_type_t selectwait;
|
|
|
|
chown_type_t chown;
|
|
} fs_node_t;
|
|
|
|
struct vfs_entry {
|
|
char * name;
|
|
fs_node_t * file;
|
|
char * device;
|
|
char * fs_type;
|
|
};
|
|
|
|
extern fs_node_t *fs_root;
|
|
extern int pty_create(void *size, fs_node_t ** fs_master, fs_node_t ** fs_slave);
|
|
|
|
int has_permission(fs_node_t *node, int permission_bit);
|
|
uint64_t read_fs(fs_node_t *node, uint64_t offset, uint64_t size, uint8_t *buffer);
|
|
uint64_t write_fs(fs_node_t *node, uint64_t offset, uint64_t size, uint8_t *buffer);
|
|
void open_fs(fs_node_t *node, unsigned int flags);
|
|
void close_fs(fs_node_t *node);
|
|
struct dirent *readdir_fs(fs_node_t *node, uint64_t index);
|
|
fs_node_t *finddir_fs(fs_node_t *node, char *name);
|
|
int mkdir_fs(char *name, uint16_t permission);
|
|
int create_file_fs(char *name, uint16_t permission);
|
|
fs_node_t *kopen(const char *filename, uint64_t flags);
|
|
char *canonicalize_path(const char *cwd, const char *input);
|
|
fs_node_t *clone_fs(fs_node_t * source);
|
|
int ioctl_fs(fs_node_t *node, int request, void * argp);
|
|
int chmod_fs(fs_node_t *node, int mode);
|
|
int chown_fs(fs_node_t *node, int uid, int gid);
|
|
int unlink_fs(char * name);
|
|
int symlink_fs(char * value, char * name);
|
|
int readlink_fs(fs_node_t * node, char * buf, size_t size);
|
|
int selectcheck_fs(fs_node_t * node);
|
|
int selectwait_fs(fs_node_t * node, void * process);
|
|
void truncate_fs(fs_node_t * node);
|
|
|
|
void vfs_install(void);
|
|
void * vfs_mount(const char * path, fs_node_t * local_root);
|
|
typedef fs_node_t * (*vfs_mount_callback)(const char * arg, const char * mount_point);
|
|
int vfs_register(const char * name, vfs_mount_callback callback);
|
|
int vfs_mount_type(const char * type, const char * arg, const char * mountpoint);
|
|
void vfs_lock(fs_node_t * node);
|
|
|
|
/* Debug purposes only, please */
|
|
void debug_print_vfs_tree(void);
|
|
|
|
void map_vfs_directory(const char *);
|
|
|
|
int make_unix_pipe(fs_node_t ** pipes);
|
|
|