devfs: the filesystem of device nodes, usually mounted on /dev. More...

#include <core/system.h>
#include <core/module.h>
#include <core/string.h>
#include <core/time.h>
#include <fs/vfs.h>
#include <fs/devfs.h>
#include <fs/tmpfs.h>
#include <aquila/errno.h>

Functions
static int	devfs_init ()
	Sets devfs up at boot: tmpfs's operations, and its root directory.
static int	devfs_mount (struct vnode dir, int flags, void data)
	Mounts devfs on a directory: its one root directory is bound there.

Variables
struct vnode *	devfs_root = NULL
struct fs	devfs

Detailed Description

devfs: the filesystem of device nodes, usually mounted on /dev.

It is a tmpfs with one root of its own: every mount of devfs shows the same directory, so the nodes made at boot (rootfs's runit stage 1, or a test program) are there for whoever mounts it.

Definition in file devfs.c.

Function Documentation

◆ devfs_init()

int devfs_init ( )

static

Sets devfs up at boot: tmpfs's operations, and its root directory.

Definition at line 24 of file devfs.c.

References vnode::atime, vnode::ctime, devfs, devfs_init(), devfs_root, fs::fops, vnode::fs, gettime(), vnode::ino, kmalloc(), M_ZERO, vnode::mode, vnode::mtime, vnode::nlink, vnode::ref, tmpfs, vfs_install(), and fs::vops.

Referenced by devfs_init().

◆ devfs_mount()

int devfs_mount	(	struct vnode *	dir,
		int	flags,
		void *	data )

static

Mounts devfs on a directory: its one root directory is bound there.

Definition at line 52 of file devfs.c.

References devfs_mount(), devfs_root, and vfs_bind().

Referenced by devfs_mount().

Variable Documentation

◆ devfs

struct fs devfs

Initial value:

        = {
    .name   = "devfs",
    .nodev  = 1,
    .init   = devfs_init,
    .mount  = devfs_mount,
}

Definition at line 60 of file devfs.c.

Referenced by devfs_init(), load_ramdisk(), and vfs_mount_root_dev().

◆ devfs_root

struct vnode* devfs_root = NULL

Definition at line 21 of file devfs.c.

Referenced by devfs_init(), and devfs_mount().

Functions