cpio.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 "mos/platform/platform.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/lib/structures/tree.hpp>
#include <mos/misc/setup.hpp>
#include <mos/mos_global.h>
#include <mos/syslog/printk.hpp>
#include <mos_stdlib.hpp>
#include <mos_string.hpp>

Include dependency graph for cpio.cpp:

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Classes
struct	cpio_newc_header_t
struct	cpio_inode_t

Macros
#define	CPIO_MODE_FILE_TYPE   0170000
#define	CPIO_MODE_SOCKET   0140000
#define	CPIO_MODE_SYMLINK   0120000
#define	CPIO_MODE_FILE   0100000
#define	CPIO_MODE_BLOCKDEV   0060000
#define	CPIO_MODE_DIR   0040000
#define	CPIO_MODE_CHARDEV   0020000
#define	CPIO_MODE_FIFO   0010000
#define	CPIO_MODE_SUID   0004000
#define	CPIO_MODE_SGID   0002000
#define	CPIO_MODE_STICKY   0001000

Functions
	MOS_STATIC_ASSERT (sizeof(cpio_newc_header_t)==110, "cpio_newc_header has wrong size")
static size_t	initrd_read (void *buf, size_t size, size_t offset)
static file_type_t	cpio_modebits_to_filetype (u32 modebits)
static bool	cpio_read_metadata (const char *target, cpio_newc_header_t *header, size_t *header_offset, size_t *name_offset, size_t *name_length, size_t *data_offset, size_t *data_length)
should_inline cpio_inode_t *	CPIO_INODE (inode_t *inode)
static cpio_inode_t *	cpio_inode_trycreate (const char *path, superblock_t *sb)
static PtrResult< dentry_t >	cpio_mount (filesystem_t *fs, const char *dev_name, const char *mount_options)
static bool	cpio_i_lookup (inode_t *parent_dir, dentry_t *dentry)
static void	cpio_i_iterate_dir (dentry_t *dentry, vfs_listdir_state_t *state, dentry_iterator_op add_record)
static size_t	cpio_i_readlink (dentry_t *dentry, char *buffer, size_t buflen)
static bool	cpio_sb_drop_inode (inode_t *inode)
PtrResult< phyframe_t >	cpio_fill_cache (inode_cache_t *cache, uint64_t pgoff)
static	FILESYSTEM_DEFINE (fs_cpiofs, "cpiofs", cpio_mount, NULL)
	FILESYSTEM_AUTOREGISTER (fs_cpiofs)

Variables
const inode_ops_t	cpio_dir_inode_ops
const inode_ops_t	cpio_file_inode_ops
const file_ops_t	cpio_file_ops
const inode_cache_ops_t	cpio_icache_ops
const superblock_ops_t	cpio_sb_ops
const file_ops_t	cpio_noop_file_ops = { 0 }

Macro Definition Documentation

CPIO_MODE_FILE_TYPE

#define CPIO_MODE_FILE_TYPE   0170000

Definition at line 22 of file cpio.cpp.

Referenced by cpio_i_iterate_dir(), cpio_inode_trycreate(), and cpio_modebits_to_filetype().

CPIO_MODE_SOCKET

#define CPIO_MODE_SOCKET   0140000

Definition at line 23 of file cpio.cpp.

Referenced by cpio_modebits_to_filetype().

CPIO_MODE_SYMLINK

#define CPIO_MODE_SYMLINK   0120000

Definition at line 24 of file cpio.cpp.

Referenced by cpio_modebits_to_filetype().

CPIO_MODE_FILE

#define CPIO_MODE_FILE   0100000

Definition at line 25 of file cpio.cpp.

Referenced by cpio_modebits_to_filetype().

CPIO_MODE_BLOCKDEV

#define CPIO_MODE_BLOCKDEV   0060000

Definition at line 26 of file cpio.cpp.

Referenced by cpio_modebits_to_filetype().

CPIO_MODE_DIR

#define CPIO_MODE_DIR   0040000

Definition at line 27 of file cpio.cpp.

Referenced by cpio_modebits_to_filetype().

CPIO_MODE_CHARDEV

#define CPIO_MODE_CHARDEV   0020000

Definition at line 28 of file cpio.cpp.

Referenced by cpio_modebits_to_filetype().

CPIO_MODE_FIFO

#define CPIO_MODE_FIFO   0010000

Definition at line 29 of file cpio.cpp.

Referenced by cpio_modebits_to_filetype().

CPIO_MODE_SUID

#define CPIO_MODE_SUID   0004000

Definition at line 30 of file cpio.cpp.

Referenced by cpio_inode_trycreate().

CPIO_MODE_SGID

#define CPIO_MODE_SGID   0002000

Definition at line 31 of file cpio.cpp.

Referenced by cpio_inode_trycreate().

CPIO_MODE_STICKY

#define CPIO_MODE_STICKY   0001000

Definition at line 32 of file cpio.cpp.

Referenced by cpio_inode_trycreate().

Function Documentation

MOS_STATIC_ASSERT()

MOS_STATIC_ASSERT	(	sizeof(cpio_newc_header_t)	= =110,
		"cpio_newc_header has wrong size"	)

initrd_read()

static size_t initrd_read ( void * buf, size_t size, size_t offset )

static

Definition at line 72 of file cpio.cpp.

Referenced by cpio_fill_cache(), cpio_i_iterate_dir(), cpio_i_readlink(), and cpio_read_metadata().

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cpio_modebits_to_filetype()

static file_type_t cpio_modebits_to_filetype ( u32 modebits )

static

Definition at line 80 of file cpio.cpp.

Referenced by cpio_i_iterate_dir(), and cpio_inode_trycreate().

cpio_read_metadata()

static bool cpio_read_metadata ( const char * target, cpio_newc_header_t * header, size_t * header_offset, size_t * name_offset, size_t * name_length, size_t * data_offset, size_t * data_length )

static

Definition at line 98 of file cpio.cpp.

Referenced by cpio_inode_trycreate().

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CPIO_INODE()

should_inline cpio_inode_t * CPIO_INODE

(

inode_t *

inode

)

Definition at line 156 of file cpio.cpp.

Referenced by cpio_fill_cache(), cpio_i_iterate_dir(), cpio_i_readlink(), and cpio_sb_drop_inode().

cpio_inode_trycreate()

static cpio_inode_t * cpio_inode_trycreate ( const char * path, superblock_t * sb )

static

Definition at line 163 of file cpio.cpp.

Referenced by cpio_i_lookup(), and cpio_mount().

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cpio_mount()

static PtrResult< dentry_t > cpio_mount ( filesystem_t * fs, const char * dev_name, const char * mount_options )

static

Definition at line 205 of file cpio.cpp.

Referenced by FILESYSTEM_DEFINE().

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cpio_i_lookup()

static bool cpio_i_lookup ( inode_t * parent_dir, dentry_t * dentry )

static

Definition at line 231 of file cpio.cpp.

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cpio_i_iterate_dir()

static void cpio_i_iterate_dir ( dentry_t * dentry, vfs_listdir_state_t * state, dentry_iterator_op add_record )

static

Definition at line 246 of file cpio.cpp.

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cpio_i_readlink()

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

static

Definition at line 319 of file cpio.cpp.

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cpio_sb_drop_inode()

static bool cpio_sb_drop_inode ( inode_t * inode )

static

Definition at line 325 of file cpio.cpp.

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cpio_fill_cache()

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

Definition at line 348 of file cpio.cpp.

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FILESYSTEM_DEFINE()

static FILESYSTEM_DEFINE ( fs_cpiofs , "cpiofs" , cpio_mount , NULL  )

static

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FILESYSTEM_AUTOREGISTER()

FILESYSTEM_AUTOREGISTER

(

fs_cpiofs

)

Variable Documentation

cpio_dir_inode_ops

const inode_ops_t cpio_dir_inode_ops

Initial value:

= {
    .iterate_dir = cpio_i_iterate_dir,
    .lookup = cpio_i_lookup,
}

Definition at line 335 of file cpio.cpp.

Referenced by cpio_inode_trycreate().

cpio_file_inode_ops

const inode_ops_t cpio_file_inode_ops

Initial value:

= {
    .readlink = cpio_i_readlink,
}

Definition at line 340 of file cpio.cpp.

Referenced by cpio_inode_trycreate().

cpio_file_ops

const file_ops_t cpio_file_ops

Initial value:

= {
    .read = vfs_generic_read,
}

Definition at line 344 of file cpio.cpp.

Referenced by cpio_inode_trycreate().

cpio_icache_ops

const inode_cache_ops_t cpio_icache_ops

Initial value:

= {
    .fill_cache = cpio_fill_cache,
}

Definition at line 368 of file cpio.cpp.

Referenced by cpio_inode_trycreate().

cpio_sb_ops

const superblock_ops_t cpio_sb_ops

Initial value:

= {
    .drop_inode = cpio_sb_drop_inode,
}

Definition at line 331 of file cpio.cpp.

Referenced by cpio_mount().

cpio_noop_file_ops

const file_ops_t cpio_noop_file_ops = { 0 }

extern

Referenced by cpio_inode_trycreate().