vfs_utils.cpp File Reference

#include "mos/filesystem/vfs_utils.hpp"
#include "mos/filesystem/dentry.hpp"
#include "mos/filesystem/page_cache.hpp"
#include "mos/filesystem/vfs_types.hpp"
#include "mos/lib/sync/spinlock.hpp"
#include "mos/mm/physical/pmm.hpp"
#include <algorithm>
#include <memory>
#include <mos/lib/structures/hashmap_common.hpp>
#include <mos/types.hpp>
#include <mos_stdlib.hpp>
#include <mos_string.hpp>

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Functions
static dentry_t *	dentry_create (superblock_t *sb, dentry_t *parent, mos::string_view name)
dentry_t *	dentry_get_from_parent (superblock_t *sb, dentry_t *parent, mos::string_view name)
	Create a new dentry with the given name and parent.
bool	simple_page_write_begin (inode_cache_t *icache, off_t offset, size_t size, phyframe_t **page, void **private_)
void	simple_page_write_end (inode_cache_t *icache, off_t offset, size_t size, phyframe_t *page, void *private_)
long	simple_flush_page_discard_data (inode_cache_t *icache, off_t pgoff, phyframe_t *page)
ssize_t	vfs_generic_read (const file_t *file, void *buf, size_t size, off_t offset)
ssize_t	vfs_generic_write (const file_t *file, const void *buf, size_t size, off_t offset)
bool	vfs_simple_write_begin (inode_cache_t *icache, off_t offset, size_t size)
void	vfs_generic_iterate_dir (const dentry_t *dir, vfs_listdir_state_t *state, dentry_iterator_op add_record)

Function Documentation

dentry_create()

static dentry_t * dentry_create ( superblock_t * sb, dentry_t * parent, mos::string_view name )

static

Definition at line 18 of file vfs_utils.cpp.

Referenced by dentry_get_from_parent().

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dentry_get_from_parent()

dentry_t * dentry_get_from_parent	(	superblock_t *	sb,
		dentry_t *	parent,
		mos::string_view	name = "" )

Create a new dentry with the given name and parent.

Parameters

sb	The superblock of the dentry
parent	The parent dentry
name	The name of the dentry

Returns

The new dentry, or NULL if the dentry could not be created

Note

The returned dentry will have its reference count of 0.

Definition at line 37 of file vfs_utils.cpp.

Referenced by cpio_mount(), dentry_lookup_child(), memfd_create(), MOS_INIT(), sysfs_do_register(), sysfs_register_file(), tmpfs_fsop_mount(), and userfs_fsop_mount().

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simple_page_write_begin()

bool simple_page_write_begin	(	inode_cache_t *	icache,
		off_t	offset,
		size_t	size,
		phyframe_t **	page,
		void **	private_ )

Definition at line 62 of file vfs_utils.cpp.

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simple_page_write_end()

void simple_page_write_end	(	inode_cache_t *	icache,
		off_t	offset,
		size_t	size,
		phyframe_t *	page,
		void *	private_ )

Definition at line 74 of file vfs_utils.cpp.

simple_flush_page_discard_data()

long simple_flush_page_discard_data	(	inode_cache_t *	icache,
		off_t	pgoff,
		phyframe_t *	page )

Definition at line 84 of file vfs_utils.cpp.

Referenced by do_flush_and_drop_cached_page().

vfs_generic_read()

ssize_t vfs_generic_read	(	const file_t *	file,
		void *	buf,
		size_t	size,
		off_t	offset )

Definition at line 93 of file vfs_utils.cpp.

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vfs_generic_write()

ssize_t vfs_generic_write	(	const file_t *	file,
		const void *	buf,
		size_t	size,
		off_t	offset )

Definition at line 103 of file vfs_utils.cpp.

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vfs_simple_write_begin()

bool vfs_simple_write_begin	(	inode_cache_t *	icache,
		off_t	offset,
		size_t	size )

Definition at line 110 of file vfs_utils.cpp.

vfs_generic_iterate_dir()

void vfs_generic_iterate_dir	(	const dentry_t *	dir,
		vfs_listdir_state_t *	state,
		dentry_iterator_op	add_record )

Definition at line 118 of file vfs_utils.cpp.

Referenced by sysfs_iops_iterate_dir(), and vfs_populate_listdir_buf().

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