ufs.c File Reference

#include <vfs/vfs.h>
#include <ufs/ufs.h>
#include <ufs/ffs.h>
#include <lib/kprintf.h>
#include <lib/kmalloc.h>
#include <ubixos/kpanic.h>
#include <lib/string.h>

Include dependency graph for ufs.c:

Go to the source code of this file.

Defines
#define	DBPERVBLK   (VBLKSIZE / DEV_BSIZE)
#define	DIP(field)   fs->fs_magic == FS_UFS1_MAGIC ? dp1.field : dp2.field
#define	INDIRPERVBLK(fs)   (NINDIR(fs) / ((fs)->fs_bsize >> VBLKSHIFT))
#define	INO_TO_VBA(fs, ipervblk, x)
#define	INO_TO_VBO(ipervblk, x)   ((x) % ipervblk)
#define	INOPB(fs)   ((fs)->fs_inopb)
#define	IPERVBLK(fs)   (INOPB(fs) / ((fs)->fs_bsize >> VBLKSHIFT))
#define	VBLKMASK   (VBLKSIZE - 1)
#define	VBLKSHIFT   12
#define	VBLKSIZE   (1 << VBLKSHIFT)
Functions
static int	dskread (void *buf, u_int64_t block, size_t count, fileDescriptor *fd)
static __inline int	fsfind (const char *name, ino_t *ino, fileDescriptor *fd)
static ssize_t	fsread (ino_t inode, void *buf, size_t nbyte, fileDescriptor *fd)
static ino_t	lookup (const char *path, fileDescriptor *fd)
int	ufs_init ()
int	ufs_initialize (struct vfs_mountPoint *mp)
static int	ufs_openFile (const char *file, fileDescriptor *fd)
int	ufs_readFile (fileDescriptor *fd, char *data, uInt32 offset, long size)
int	ufs_writeFile (fileDescriptor *fd, char *data, uInt32 offset, long size)
Variables
static int	sblock_try [] = SBLOCKSEARCH

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Define Documentation

#define DBPERVBLK   (VBLKSIZE / DEV_BSIZE)

Definition at line 41 of file ufs.c.

Referenced by fsread().

#define DIP

(

field

)

fs->fs_magic == FS_UFS1_MAGIC ? dp1.field : dp2.field

Definition at line 73 of file ufs.c.

Referenced by fsread().

#define INDIRPERVBLK

(

fs

)

(NINDIR(fs) / ((fs)->fs_bsize >> VBLKSHIFT))

Definition at line 42 of file ufs.c.

Referenced by fsread().

#define INO_TO_VBA	(	fs,
		ipervblk,
		x		)

Value:

(fsbtodb(fs, cgimin(fs, ino_to_cg(fs, x))) + \
    (((x) % (fs)->fs_ipg) / (ipervblk) * DBPERVBLK))

Definition at line 45 of file ufs.c.

Referenced by fsread().

#define INO_TO_VBO	(	ipervblk,
		x		)	((x) % ipervblk)

Definition at line 48 of file ufs.c.

Referenced by fsread().

#define INOPB

(

fs

)

((fs)->fs_inopb)

Definition at line 44 of file ufs.c.

#define IPERVBLK

(

fs

)

(INOPB(fs) / ((fs)->fs_bsize >> VBLKSHIFT))

Definition at line 43 of file ufs.c.

Referenced by fsread().

#define VBLKMASK   (VBLKSIZE - 1)

Definition at line 40 of file ufs.c.

Referenced by fsread().

#define VBLKSHIFT   12

Definition at line 38 of file ufs.c.

#define VBLKSIZE   (1 << VBLKSHIFT)

Definition at line 39 of file ufs.c.

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Function Documentation

static int dskread	(	void *	buf,
		u_int64_t	block,
		size_t	count,
		fileDescriptor *	fd
	)			[static]

Definition at line 51 of file ufs.c.

References vfs_mountPoint::device, device_node::devInfo, device_interface::info, fileDescriptorStruct::mp, and device_interface::read.

Referenced by fsread().

static __inline int fsfind	(	const char *	name,
		ino_t *	ino,
		fileDescriptor *	fd
	)			[static]

Definition at line 214 of file ufs.c.

References dirent::d_fileno, dirent::d_name, dirent::d_reclen, dirent::d_type, DEV_BSIZE, fsread(), fileDescriptorStruct::offset, and strcmp().

Referenced by lookup().

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static ssize_t fsread	(	ino_t	inode,
		void *	buf,
		size_t	nbyte,
		fileDescriptor *	fd
	)			[static]

Definition at line 77 of file ufs.c.

References dmadat::blkbuf, blkoff, DBPERVBLK, DEV_BSHIFT, DEV_BSIZE, ufs2_dinode::di_db, ufs2_dinode::di_ib, ufs2_dinode::di_size, DIP, fileDescriptorStruct::dmadat, fileDescriptorStruct::dsk_meta, dskread(), fs::fs_magic, FS_UFS1_MAGIC, FS_UFS2_MAGIC, fsbtodb, dmadat::indbuf, INDIRPERVBLK, INO_TO_VBA, INO_TO_VBO, IPERVBLK, kprintf(), lblkno, MAXBSIZE, memcpy(), NDADDR, NINDIR, fileDescriptorStruct::offset, dmadat::sbbuf, sblksize, sblock_try, fileDescriptorStruct::size, VBLKMASK, VBLKSHIFT, and VBLKSIZE.

Referenced by fsfind(), ufs_openFile(), and ufs_readFile().

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static ino_t lookup	(	const char *	path,
		fileDescriptor *	fd
	)			[static]

Definition at line 236 of file ufs.c.

References DT_DIR, DT_REG, fsfind(), kprintf(), MAXNAMLEN, memcpy(), name, and ROOTINO.

Referenced by ufs_openFile().

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int ufs_init

(

)

Definition at line 314 of file ufs.c.

References kpanic(), NULL, ufs_initialize(), ufs_openFile(), ufs_readFile(), ufs_writeFile(), vfsRegisterFS(), and x1.

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int ufs_initialize

(

struct vfs_mountPoint *

mp

)

Definition at line 309 of file ufs.c.

References x1.

static int ufs_openFile	(	const char *	file,
		fileDescriptor *	fd
	)			[static]

Definition at line 272 of file ufs.c.

References fileDescriptorStruct::dmadat, fsread(), fileDescriptorStruct::ino, kmalloc(), lookup(), fileDescriptorStruct::offset, fileDescriptorStruct::perms, and x1.

Referenced by ufs_init().

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int ufs_readFile	(	fileDescriptor *	fd,
		char *	data,
		uInt32	offset,
		long	size
	)

Definition at line 291 of file ufs.c.

References fsread(), and fileDescriptorStruct::ino.

Referenced by ufs_init().

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int ufs_writeFile	(	fileDescriptor *	fd,
		char *	data,
		uInt32	offset,
		long	size
	)

Definition at line 295 of file ufs.c.

References kprintf().

Referenced by ufs_init().

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Variable Documentation

int sblock_try[] = SBLOCKSEARCH [static]

Definition at line 66 of file ufs.c.

Referenced by fsread().

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