Mounting: a filesystem on a directory, by type (mount()), and the root filesystem from a disk partition. More...

#include <core/system.h>
#include <core/string.h>
#include <fs/vfs.h>
#include <fs/devfs.h>
#include <dev/dev.h>
#include <ds/queue.h>

Functions
int	vfs_mount (const char type, const char dir, int flags, void data, struct uio uio)
	Mounts a filesystem of a type on a directory, for mount().
static int	root_dev (const char name, dev_t dev)
	Gets the device number of an ATA disk partition, by its name (/dev/hda1 to /dev/hdd4).
int	vfs_mount_root_dev (const char name, const char type)
	Mounts the root filesystem from a disk partition (the root=/dev/hda2 kernel argument).

Variables
struct queue *	mounts = QUEUE_NEW()

Detailed Description

Mounting: a filesystem on a directory, by type (mount()), and the root filesystem from a disk partition.

/proc/mounts lists the mounts.

Definition in file mount.c.

Function Documentation

◆ root_dev()

int root_dev	(	const char *	name,
		dev_t *	dev )

static

Gets the device number of an ATA disk partition, by its name (/dev/hda1 to /dev/hdd4).

Returns 0, or -ENODEV for another name.

Definition at line 100 of file mount.c.

References DEV, and root_dev().

Referenced by root_dev(), and vfs_mount_root_dev().

◆ vfs_mount()

int vfs_mount	(	const char *	type,
		const char *	dir,
		int	flags,
		void *	data,
		struct uio *	uio )

Mounts a filesystem of a type on a directory, for mount().

Parameters

type	the filesystem's name ("ext2", "procfs", ...)
dir	the directory's path
flags	passed on to the filesystem
data	the filesystem's arguments (its device, its options)
uio	who is asking

Returns: 0, -EINVAL for an unknown type, -ENOTDIR, -EBUSY if something is mounted there already, or the filesystem's error

Definition at line 29 of file mount.c.

References vnode::covered, mountpoint::dev, kfree(), kmalloc(), vnode::mode, fs::mount, vnode::mounted, mounts, fs_list::next, NULL, mountpoint::options, mountpoint::path, registered_fs, mountpoint::type, vfs_close(), vfs_lookup(), vfs_mount(), and vfs_vnode_path().

Referenced by kmain(), sys_mount(), and vfs_mount().

◆ vfs_mount_root_dev()

int vfs_mount_root_dev	(	const char *	name,
		const char *	type )

Mounts the root filesystem from a disk partition (the root=/dev/hda2 kernel argument).

There are no device nodes yet at boot, so the partition's vnode is made here, as the RAM disk's is.

Parameters

name	the partition's name, /dev/hda1 to /dev/hdd4
type	the filesystem's type (rootfstype=), or NULL for ext2

Returns: 0, -ENODEV for a bad name, -EINVAL for an unknown type, or the filesystem's error

Definition at line 120 of file mount.c.

References devfs, kfree(), kmalloc(), fs::load, M_ZERO, fs::name, fs_list::next, NULL, printk(), vnode::rdev, registered_fs, root_dev(), vfs_mount_root(), and vfs_mount_root_dev().

Referenced by kmain(), and vfs_mount_root_dev().

Variable Documentation

◆ mounts

struct queue* mounts = QUEUE_NEW()

Definition at line 14 of file mount.c.

Referenced by procfs_mounts(), and vfs_mount().

Functions