vfs.c File Reference

#include "console/console.h"
#include "init/init.h"
#include "ioforge/ioforge_block.h"
#include "libk/debug/debug.h"
#include "libk/fs/iso9660.h"
#include "libk/serial.h"
#include "llist.h"
#include "memory/slab.h"
#include "notify.h"
#include "str.h"
#include "vfs/vnode.h"
#include <string.h>
#include <type.h>
#include <vector.h>
#include <vfs/dentry.h>
#include <vfs/dev.h>
#include <vfs/enum.h>
#include <vfs/filesystem.h>
#include <vfs/mount.h>
#include <vfs/vfs.h>
#include <libk/tree/rbt.h>

Go to the source code of this file.

Macros
#define	RBT_TYPE   vnode_t
#define	RBT_ID_NAME   id
#define	VFS_DEBUG   1
#define	PATH_MAX   4096
#define	NAME_MAX   255
#define	VFS_MAX_FS   512
#define	VFS_MAX_PATH_CACHE   512
#define	CALC_PATH_HASH_LEN(path, curr_depth)

Functions
static void	vfs_event_handler (uint32_t event, void *data, void *ctx)
	__attribute__ ((used, visibility("default"), section(".export")))
	This function handles memory allocation for a new dentry using the slab allocator.
	INIT (Vfs)
static int	vfs_umount_recursive (dentry_t *dentry)
int	vfs_umount (dentry_ptr dentry)
	__attribute__ ((unused))

Variables
static rbt_node *	NIL
static rbt_node *	vfs_tree
static struct slab_cache *	rbt_node_cache

Macro Definition Documentation

CALC_PATH_HASH_LEN

#define CALC_PATH_HASH_LEN	(		path,
			curr_depth )

Value:

    4096 + 1024 * pow(strlen(path), curr_depth)

Definition at line 33 of file vfs.c.

NAME_MAX

#define NAME_MAX   255

Definition at line 30 of file vfs.c.

PATH_MAX

#define PATH_MAX   4096

Definition at line 29 of file vfs.c.

RBT_ID_NAME

#define RBT_ID_NAME   id

Definition at line 24 of file vfs.c.

RBT_TYPE

#define RBT_TYPE   vnode_t

Definition at line 23 of file vfs.c.

VFS_DEBUG

#define VFS_DEBUG   1

Definition at line 28 of file vfs.c.

VFS_MAX_FS

#define VFS_MAX_FS   512

Definition at line 31 of file vfs.c.

VFS_MAX_PATH_CACHE

#define VFS_MAX_PATH_CACHE   512

Definition at line 32 of file vfs.c.

Function Documentation

__attribute__() [1/2]

__attribute__

(

(unused)

)

Definition at line 255 of file vfs.c.

References data, dentry_put(), vnode::device, get_full_path_from_dentry(), iso9660_pvd::id, kalloc(), kfree2(), LOG2_INFO, device_id::major, memset(), device_id::minor, notify_call(), ops, vnode::ops, resolve_dentry(), retrieve_dev(), serial2_printf(), str_release(), strncmp(), UNUSED, vfs_mount(), VFS_NOTIFY_ROOT_FOUND, VFS_OK, vfs_umount(), dentry::vnode, and vxnamei().

__attribute__() [2/2]

__attribute__

(

(used, visibility("default"), section(".export"))

)

This function handles memory allocation for a new dentry using the slab allocator.

It also links the dentry to its corresponding VNode (if provided).

Note

This function performs lazy initialization of the dentry slab cache if it does not exist yet.

Parameters

name	The name of the file or directory.
vnode	Pointer to the associated VNode (inode data). Pass NULL if the VNode is not yet available.

Returns

dentry_ptr A pointer to the newly allocated and initialized dentry.

Definition at line 42 of file vfs.c.

References KERNEL_API, memset(), NIL, rbt_insert_node(), rbt_node_cache, vfs_tree, and vxSlabAlloc().

INIT()

INIT

(

Vfs

)

Definition at line 52 of file vfs.c.

References create_and_attach_vnode(), create_filesystem(), iso9660_fs_operations(), kalloc(), LOG_INFO, memset(), NIL, notify_dev_create(), NOTIFY_HIGHT, notify_register(), rbt_node_cache, str(), vfs_event_handler(), vfs_tree, VNODE_TYPE_DIR, vxCreateSlabCache(), vxSetDentryAsRoot(), and vxSlabAlloc().

vfs_event_handler()

static void vfs_event_handler ( uint32_t event, void * data, void * ctx )

static

Definition at line 362 of file vfs.c.

References data, DEBUG_LEVEL_OK, KDEBUG, LOG2_DEBUG, UNUSED, and VFS_NOTIFY_PROBE.

Referenced by INIT().

vfs_umount()

int vfs_umount

(

dentry_ptr

dentry

)

Definition at line 217 of file vfs.c.

References fs_instance::block_dentry, kstring::c_str, DEBUG_LEVEL_OK, dentry_get(), dentry_put(), vnode::fs_instance, KDEBUG, LOG2_DEBUG, LOG2_WARN, cdev::major, cdev::minor, vnode::mount, vnode::mountedhere, dentry::name, vnode::type, VFS_ERR, VFS_OK, vfs_umount_recursive(), dentry::vnode, VNODE_TYPE_BLK, and VNODE_TYPE_DIR.

Referenced by __attribute__().

vfs_umount_recursive()

static int vfs_umount_recursive ( dentry_t * dentry )

static

Definition at line 175 of file vfs.c.

References kstring::c_str, cache_remove(), ch, dentry::child_list, container_of, atomic_t::counter, dentry_put(), get_reffcount(), get_root_cache(), llist_del(), LOG2_WARN, dentry::name, llist_head::next, next, dentry::refcount, VFS_ERR_BUSY, VFS_OK, and vfs_umount_recursive().

Referenced by vfs_umount(), and vfs_umount_recursive().

Variable Documentation

NIL

rbt_node* NIL

static

Definition at line 37 of file vfs.c.

Referenced by __attribute__(), INIT(), rbt_fix_delete(), rbt_fix_insert(), rbt_insert_node(), rbt_remove_node(), rbt_rotate_left(), rbt_rotate_right(), and rbt_search_node().

rbt_node_cache

struct slab_cache* rbt_node_cache

static

Definition at line 39 of file vfs.c.

vfs_tree

rbt_node* vfs_tree

static

Definition at line 38 of file vfs.c.

Referenced by __attribute__(), and INIT().