tmpfs.cpp File Reference

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

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Classes
struct	tmpfs_inode_t
struct	tmpfs_sb_t

Macros
#define	TMPFS_INODE(inode)
#define	TMPFS_SB(var)

Functions
static PtrResult< dentry_t >	tmpfs_fsop_mount (filesystem_t *fs, const char *dev, const char *options)
	FILESYSTEM_DEFINE (fs_tmpfs, "tmpfs", tmpfs_fsop_mount, NULL)
	FILESYSTEM_AUTOREGISTER (fs_tmpfs)
inode_t *	tmpfs_create_inode (tmpfs_sb_t *sb, file_type_t type, file_perm_t perm)
static bool	tmpfs_mknod_impl (inode_t *dir, dentry_t *dentry, file_type_t type, file_perm_t perm, dev_t dev)
static bool	tmpfs_i_create (inode_t *dir, dentry_t *dentry, file_type_t type, file_perm_t perm)
static bool	tmpfs_i_hardlink (dentry_t *old_dentry, inode_t *dir, dentry_t *new_dentry)
static bool	tmpfs_i_symlink (inode_t *dir, dentry_t *dentry, const char *symname)
static bool	tmpfs_i_unlink (inode_t *dir, dentry_t *dentry)
static bool	tmpfs_i_mkdir (inode_t *dir, dentry_t *dentry, file_perm_t perm)
static bool	tmpfs_i_rmdir (inode_t *dir, dentry_t *subdir_to_remove)
static bool	tmpfs_i_mknod (inode_t *dir, dentry_t *dentry, file_type_t type, file_perm_t perm, dev_t dev)
static bool	tmpfs_i_rename (inode_t *old_dir, dentry_t *old_dentry, inode_t *new_dir, dentry_t *new_dentry)
static size_t	tmpfs_i_readlink (dentry_t *dentry, char *buffer, size_t buflen)
static PtrResult< phyframe_t >	tmpfs_fill_cache (inode_cache_t *cache, uint64_t pgoff)
static bool	tmpfs_sb_drop_inode (inode_t *inode)

Variables
static const file_ops_t	tmpfs_noop_file_ops = { 0 }
const inode_ops_t	tmpfs_inode_dir_ops
const inode_ops_t	tmpfs_inode_symlink_ops
const inode_cache_ops_t	tmpfs_inode_cache_ops
const file_ops_t	tmpfs_file_ops
const superblock_ops_t	tmpfs_sb_op
static const file_perm_t	tmpfs_default_mode = PERM_READ | PERM_WRITE | PERM_EXEC

Macro Definition Documentation

TMPFS_INODE

#define TMPFS_INODE

(

inode

)

Value:

container_of(inode, tmpfs_inode_t, real_inode)

Definition at line 38 of file tmpfs.cpp.

Referenced by tmpfs_i_readlink(), tmpfs_i_rmdir(), tmpfs_i_symlink(), tmpfs_mknod_impl(), and tmpfs_sb_drop_inode().

TMPFS_SB

#define TMPFS_SB

(

var

)

Value:

container_of(var, tmpfs_sb_t, sb)

Definition at line 39 of file tmpfs.cpp.

Referenced by tmpfs_mknod_impl().

Function Documentation

tmpfs_fsop_mount()

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

static

Definition at line 102 of file tmpfs.cpp.

Referenced by FILESYSTEM_DEFINE().

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FILESYSTEM_DEFINE()

FILESYSTEM_DEFINE	(	fs_tmpfs	,
		"tmpfs"	,
		tmpfs_fsop_mount	,
		NULL	)

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FILESYSTEM_AUTOREGISTER()

FILESYSTEM_AUTOREGISTER

(

fs_tmpfs

)

tmpfs_create_inode()

inode_t * tmpfs_create_inode	(	tmpfs_sb_t *	sb,
		file_type_t	type,
		file_perm_t	perm )

Definition at line 53 of file tmpfs.cpp.

Referenced by tmpfs_fsop_mount(), and tmpfs_mknod_impl().

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tmpfs_mknod_impl()

static bool tmpfs_mknod_impl ( inode_t * dir, dentry_t * dentry, file_type_t type, file_perm_t perm, dev_t dev )

static

Definition at line 126 of file tmpfs.cpp.

Referenced by tmpfs_i_create(), tmpfs_i_mkdir(), tmpfs_i_mknod(), and tmpfs_i_symlink().

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tmpfs_i_create()

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

static

Definition at line 134 of file tmpfs.cpp.

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tmpfs_i_hardlink()

static bool tmpfs_i_hardlink ( dentry_t * old_dentry, inode_t * dir, dentry_t * new_dentry )

static

Definition at line 139 of file tmpfs.cpp.

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tmpfs_i_symlink()

static bool tmpfs_i_symlink ( inode_t * dir, dentry_t * dentry, const char * symname )

static

Definition at line 148 of file tmpfs.cpp.

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tmpfs_i_unlink()

static bool tmpfs_i_unlink ( inode_t * dir, dentry_t * dentry )

static

Definition at line 160 of file tmpfs.cpp.

tmpfs_i_mkdir()

static bool tmpfs_i_mkdir ( inode_t * dir, dentry_t * dentry, file_perm_t perm )

static

Definition at line 167 of file tmpfs.cpp.

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tmpfs_i_rmdir()

static bool tmpfs_i_rmdir ( inode_t * dir, dentry_t * subdir_to_remove )

static

Definition at line 172 of file tmpfs.cpp.

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tmpfs_i_mknod()

static bool tmpfs_i_mknod ( inode_t * dir, dentry_t * dentry, file_type_t type, file_perm_t perm, dev_t dev )

static

Definition at line 186 of file tmpfs.cpp.

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tmpfs_i_rename()

static bool tmpfs_i_rename ( inode_t * old_dir, dentry_t * old_dentry, inode_t * new_dir, dentry_t * new_dentry )

static

Definition at line 191 of file tmpfs.cpp.

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tmpfs_i_readlink()

static size_t tmpfs_i_readlink ( dentry_t * dentry, char * buffer, size_t buflen )

static

Definition at line 212 of file tmpfs.cpp.

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tmpfs_fill_cache()

static PtrResult< phyframe_t > tmpfs_fill_cache ( inode_cache_t * cache, uint64_t pgoff )

static

Definition at line 220 of file tmpfs.cpp.

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tmpfs_sb_drop_inode()

static bool tmpfs_sb_drop_inode ( inode_t * inode )

static

Definition at line 232 of file tmpfs.cpp.

Variable Documentation

tmpfs_noop_file_ops

const file_ops_t tmpfs_noop_file_ops = { 0 }

static

Definition at line 41 of file tmpfs.cpp.

Referenced by tmpfs_create_inode().

tmpfs_inode_dir_ops

const inode_ops_t tmpfs_inode_dir_ops

Initial value:

= {
    .hardlink = tmpfs_i_hardlink,
    .lookup = NULL, 
    .mkdir = tmpfs_i_mkdir,
    .mknode = tmpfs_i_mknod,
    .newfile = tmpfs_i_create,
    .rename = tmpfs_i_rename,
    .rmdir = tmpfs_i_rmdir,
    .symlink = tmpfs_i_symlink,
    .unlink = tmpfs_i_unlink,
}

Definition at line 200 of file tmpfs.cpp.

Referenced by tmpfs_create_inode().

tmpfs_inode_symlink_ops

const inode_ops_t tmpfs_inode_symlink_ops

Initial value:

= {
    .readlink = tmpfs_i_readlink,
}

Definition at line 249 of file tmpfs.cpp.

Referenced by tmpfs_create_inode().

tmpfs_inode_cache_ops

const inode_cache_ops_t tmpfs_inode_cache_ops

Initial value:

= {
    .fill_cache = tmpfs_fill_cache,
    .page_write_begin = simple_page_write_begin,
    .page_write_end = simple_page_write_end,
}

Definition at line 258 of file tmpfs.cpp.

Referenced by tmpfs_create_inode().

tmpfs_file_ops

const file_ops_t tmpfs_file_ops

Initial value:

= {
    .read = vfs_generic_read,
    .write = vfs_generic_write,
}

Definition at line 253 of file tmpfs.cpp.

Referenced by tmpfs_create_inode().

tmpfs_sb_op

const superblock_ops_t tmpfs_sb_op

Initial value:

= {
    .drop_inode = tmpfs_sb_drop_inode,
}

Definition at line 264 of file tmpfs.cpp.

Referenced by tmpfs_fsop_mount().

tmpfs_default_mode

const file_perm_t tmpfs_default_mode = PERM_READ | PERM_WRITE | PERM_EXEC

static

Definition at line 100 of file tmpfs.cpp.

Referenced by tmpfs_fsop_mount(), and tmpfs_i_symlink().