sysfs.cpp File Reference

#include "mos/filesystem/sysfs/sysfs.hpp"
#include "mos/filesystem/dentry.hpp"
#include "mos/filesystem/vfs.hpp"
#include "mos/filesystem/vfs_types.hpp"
#include "mos/filesystem/vfs_utils.hpp"
#include "mos/misc/setup.hpp"
#include "mos/mm/mm.hpp"
#include "mos/mm/physical/pmm.hpp"
#include "mos/syslog/printk.hpp"
#include <algorithm>
#include <mos/filesystem/fs_types.h>
#include <mos/io/io_types.h>
#include <mos/lib/structures/list.hpp>
#include <mos/type_utils.hpp>
#include <mos/types.hpp>
#include <mos_stdio.hpp>
#include <mos_stdlib.hpp>
#include <mos_string.hpp>

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Classes
struct	sysfs_file_t

Functions
static void	sysfs_do_register (sysfs_dir_t *sysfs_dir)
static u64	sysfs_get_ino (void)
void	sysfs_register (sysfs_dir_t *dir)
	Register a sysfs directory.
static void	sysfs_expand_buffer (sysfs_file_t *buffer, size_t new_npages)
ssize_t	sysfs_printf (sysfs_file_t *file, const char *fmt,...)
ssize_t	sysfs_put_data (sysfs_file_t *file, const void *data, size_t count)
void	sysfs_file_set_data (sysfs_file_t *file, void *data)
void *	sysfs_file_get_data (sysfs_file_t *file)
sysfs_item_t *	sysfs_file_get_item (sysfs_file_t *file)
static bool	sysfs_fops_open (inode_t *inode, FsBaseFile *file, bool created)
static void	sysfs_fops_release (FsBaseFile *file)
static __nodiscard bool	sysfs_file_ensure_ready (const FsBaseFile *file)
static ssize_t	sysfs_fops_read (const FsBaseFile *file, void *buf, size_t size, off_t offset)
static ssize_t	sysfs_fops_write (const FsBaseFile *file, const void *buf, size_t size, off_t offset)
static off_t	sysfs_fops_seek (FsBaseFile *file, off_t offset, io_seek_whence_t whence)
bool	sysfs_fops_mmap (FsBaseFile *file, vmap_t *vmap, off_t offset)
bool	sysfs_fops_munmap (FsBaseFile *file, vmap_t *vmap, bool *unmapped)
static void	sysfs_iops_iterate_dir (dentry_t *dentry, vfs_listdir_state_t *state, dentry_iterator_op add_record)
static bool	sysfs_iops_lookup (inode_t *dir, dentry_t *dentry)
static bool	sysfs_iops_create (inode_t *dir, dentry_t *dentry, file_type_t type, file_perm_t perm)
static PtrResult< dentry_t >	sysfs_fsop_mount (filesystem_t *fs, const char *dev, const char *options)
inode_t *	sysfs_create_inode (file_type_t type, void *data)
void	sysfs_register_file (sysfs_dir_t *sysfs_dir, sysfs_item_t *item)
	Register an entry in a sysfs directory.
	MOS_INIT (VFS, register_sysfs)

Variables
static list_head	sysfs_dirs
filesystem_t	fs_sysfs
static superblock_t *	sysfs_sb = NULL
static const file_ops_t	sysfs_dir_file_ops = { 0 }
static const file_ops_t	sysfs_file_ops
static const inode_ops_t	sysfs_dir_i_ops
static const file_perm_t	sysfs_dir_perm = PERM_READ | PERM_EXEC

Function Documentation

sysfs_do_register()

void sysfs_do_register ( sysfs_dir_t * sysfs_dir )

static

< for convenience

Definition at line 359 of file sysfs.cpp.

Referenced by sysfs_register().

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sysfs_get_ino()

u64 sysfs_get_ino ( void )

static

Definition at line 42 of file sysfs.cpp.

Referenced by MOS_INIT(), sysfs_create_inode(), sysfs_do_register(), and sysfs_register_file().

sysfs_register()

void sysfs_register

(

sysfs_dir_t *

entry

)

Register a sysfs directory.

Parameters

entry

the sysfs directory to register

Definition at line 48 of file sysfs.cpp.

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sysfs_expand_buffer()

void sysfs_expand_buffer ( sysfs_file_t * buffer, size_t new_npages )

static

Definition at line 57 of file sysfs.cpp.

Referenced by sysfs_printf(), and sysfs_put_data().

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sysfs_printf()

ssize_t sysfs_printf	(	sysfs_file_t *	file,
		const char *	fmt,
			... )

Definition at line 73 of file sysfs.cpp.

Referenced by init_sysfs_argv(), ipc_dump_name_waitlist(), ipc_sysfs_dump_name_waitlist(), ipc_sysfs_servers(), mmstat_sysfs_pagetable_show(), mmstat_sysfs_phyframe_stat_show(), mmstat_sysfs_stat(), mmstat_sysfs_vmaps_show(), process_sysfs_vmap_stat(), slab_sysfs_slabinfo(), tasks_sysfs_process_list(), tasks_sysfs_thread_list(), vfs_sysfs_dentry_stats_stat_receiver(), vfs_sysfs_filesystems(), and vfs_sysfs_mountpoints().

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sysfs_put_data()

ssize_t sysfs_put_data	(	sysfs_file_t *	file,
		const void *	data,
		size_t	count )

Definition at line 93 of file sysfs.cpp.

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sysfs_file_set_data()

void sysfs_file_set_data	(	sysfs_file_t *	file,
		void *	data )

Definition at line 105 of file sysfs.cpp.

Referenced by mmstat_sysfs_phyframe_stat_store(), and mmstat_sysfs_store_pid().

sysfs_file_get_data()

void * sysfs_file_get_data

(

sysfs_file_t *

file

)

Definition at line 110 of file sysfs.cpp.

Referenced by mmstat_sysfs_pagetable_show(), mmstat_sysfs_phyframe_stat_show(), and mmstat_sysfs_vmaps_show().

sysfs_file_get_item()

sysfs_item_t * sysfs_file_get_item

(

sysfs_file_t *

file

)

Definition at line 115 of file sysfs.cpp.

Referenced by acpi_sysfs_mmap().

sysfs_fops_open()

bool sysfs_fops_open ( inode_t * inode, FsBaseFile * file, bool created )

static

Definition at line 120 of file sysfs.cpp.

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sysfs_fops_release()

void sysfs_fops_release ( FsBaseFile * file )

static

Definition at line 130 of file sysfs.cpp.

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sysfs_file_ensure_ready()

__nodiscard bool sysfs_file_ensure_ready ( const FsBaseFile * file )

static

Definition at line 139 of file sysfs.cpp.

Referenced by sysfs_fops_mmap(), sysfs_fops_read(), and sysfs_fops_seek().

sysfs_fops_read()

ssize_t sysfs_fops_read ( const FsBaseFile * file, void * buf, size_t size, off_t offset )

static

Definition at line 151 of file sysfs.cpp.

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sysfs_fops_write()

ssize_t sysfs_fops_write ( const FsBaseFile * file, const void * buf, size_t size, off_t offset )

static

Definition at line 171 of file sysfs.cpp.

sysfs_fops_seek()

off_t sysfs_fops_seek ( FsBaseFile * file, off_t offset, io_seek_whence_t whence )

static

Definition at line 179 of file sysfs.cpp.

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sysfs_fops_mmap()

bool sysfs_fops_mmap	(	FsBaseFile *	file,
		vmap_t *	vmap,
		off_t	offset )

Definition at line 201 of file sysfs.cpp.

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sysfs_fops_munmap()

bool sysfs_fops_munmap	(	FsBaseFile *	file,
		vmap_t *	vmap,
		bool *	unmapped )

Definition at line 223 of file sysfs.cpp.

sysfs_iops_iterate_dir()

void sysfs_iops_iterate_dir ( dentry_t * dentry, vfs_listdir_state_t * state, dentry_iterator_op add_record )

static

Definition at line 244 of file sysfs.cpp.

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sysfs_iops_lookup()

bool sysfs_iops_lookup ( inode_t * dir, dentry_t * dentry )

static

Definition at line 281 of file sysfs.cpp.

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sysfs_iops_create()

bool sysfs_iops_create ( inode_t * dir, dentry_t * dentry, file_type_t type, file_perm_t perm )

static

Definition at line 307 of file sysfs.cpp.

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sysfs_fsop_mount()

PtrResult< dentry_t > sysfs_fsop_mount ( filesystem_t * fs, const char * dev, const char * options )

static

Definition at line 334 of file sysfs.cpp.

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sysfs_create_inode()

inode_t * sysfs_create_inode	(	file_type_t	type,
		void *	data )

Definition at line 375 of file sysfs.cpp.

Referenced by ipc_sysfs_create_ino().

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sysfs_register_file()

void sysfs_register_file	(	sysfs_dir_t *	sysfs_dir,
		sysfs_item_t *	item )

Register an entry in a sysfs directory.

Parameters

sysfs_dir	the sysfs directory to register the item in
item	the sysfs item to register

Definition at line 382 of file sysfs.cpp.

Referenced by register_sysfs_acpi_node(), register_sysfs_acpi_rsdp(), sysfs_do_register(), and sysfs_register_root_file().

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MOS_INIT()

MOS_INIT	(	VFS	,
		register_sysfs	)

Definition at line 422 of file sysfs.cpp.

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Variable Documentation

sysfs_dirs

list_head sysfs_dirs

static

Definition at line 35 of file sysfs.cpp.

Referenced by sysfs_register().

fs_sysfs

filesystem_t fs_sysfs

Initial value:

= {
    .name = "sysfs",
    .mount = sysfs_fsop_mount,
}

Definition at line 352 of file sysfs.cpp.

Referenced by MOS_INIT(), and sysfs_fsop_mount().

sysfs_sb

superblock_t* sysfs_sb = NULL

static

Definition at line 37 of file sysfs.cpp.

Referenced by MOS_INIT(), sysfs_create_inode(), sysfs_do_register(), sysfs_fsop_mount(), sysfs_iops_create(), sysfs_iops_iterate_dir(), sysfs_iops_lookup(), sysfs_register(), and sysfs_register_file().

sysfs_dir_file_ops

const file_ops_t sysfs_dir_file_ops = { 0 }

static

Definition at line 38 of file sysfs.cpp.

Referenced by MOS_INIT(), and sysfs_do_register().

sysfs_file_ops

const file_ops_t sysfs_file_ops

static

Initial value:

= {
    .open = sysfs_fops_open,
    .read = sysfs_fops_read,
    .write = sysfs_fops_write,
    .release = sysfs_fops_release,
    .seek = sysfs_fops_seek,
    .mmap = sysfs_fops_mmap,
    .munmap = sysfs_fops_munmap,
}

Definition at line 234 of file sysfs.cpp.

Referenced by sysfs_register_file().

sysfs_dir_i_ops

const inode_ops_t sysfs_dir_i_ops

static

Initial value:

= {
    .iterate_dir = sysfs_iops_iterate_dir,
    .lookup = sysfs_iops_lookup,
    .newfile = sysfs_iops_create,
}

Definition at line 328 of file sysfs.cpp.

Referenced by MOS_INIT(), and sysfs_do_register().

sysfs_dir_perm

const file_perm_t sysfs_dir_perm = PERM_READ | PERM_EXEC

static

Definition at line 357 of file sysfs.cpp.

Referenced by sysfs_do_register().