xv6/mkfs.c File Reference

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <assert.h>
#include "types.h"
#include "fs.h"
#include "stat.h"

Go to the source code of this file.

Defines
#define	min(a, b)   ((a) < (b) ? (a) : (b))
Functions
void	balloc (int)
void	wsect (uint, void *)
void	winode (uint, struct dinode *)
void	rinode (uint inum, struct dinode *ip)
void	rsect (uint sec, void *buf)
uint	ialloc (ushort type)
void	iappend (uint inum, void *p, int n)
ushort	xshort (ushort x)
uint	xint (uint x)
int	main (int argc, char *argv[])
uint	i2b (uint inum)
Variables
int	nblocks = 995
int	ninodes = 200
int	size = 1024
int	fsfd
struct superblock	sb
char	zeroes [512]
uint	freeblock
uint	usedblocks
uint	bitblocks
uint	freeinode = 1

---

Define Documentation

#define min	(	a,
		b		)	((a) < (b) ? (a) : (b))

Definition at line 237 of file mkfs.c.

---

Function Documentation

void balloc

(

int

used

)

Definition at line 222 of file mkfs.c.

References bzero(), IPB, ninodes, printf(), and wsect().

uint i2b

(

uint

inum

)

Definition at line 162 of file mkfs.c.

References IPB.

Referenced by rinode(), and winode().

uint ialloc

(

ushort

type

)

Definition at line 208 of file mkfs.c.

References bzero(), freeinode, dinode::nlink, dinode::size, dinode::type, winode(), xint(), and xshort().

void iappend	(	uint	inum,
		void *	p,
		int	n
	)

Definition at line 240 of file mkfs.c.

References dinode::addrs, freeblock, MAXFILE, min, NDIRECT, NINDIRECT, rinode(), rsect(), dinode::size, usedblocks, winode(), wsect(), and xint().

Referenced by main().

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 55 of file mkfs.c.

References balloc(), bitblocks, BSIZE, bzero(), close(), DIRSIZ, exit(), freeblock, fsfd, ialloc(), iappend(), dirent::inum, IPB, dirent::name, nblocks, superblock::nblocks, ninodes, superblock::ninodes, O_RDWR, open(), printf(), read(), rinode(), ROOTINO, sb, dinode::size, size, superblock::size, strcpy(), strncpy(), T_DIR, T_FILE, usedblocks, winode(), wsect(), xint(), xshort(), and zeroes.

void rinode	(	uint	inum,
		struct dinode *	ip
	)

Definition at line 182 of file mkfs.c.

References i2b(), IPB, and rsect().

Referenced by iappend(), and main().

void rsect	(	uint	sec,
		void *	buf
	)

Definition at line 195 of file mkfs.c.

References exit(), fsfd, and read().

Referenced by iappend(), rinode(), and winode().

void winode	(	uint	inum,
		struct dinode *	ip
	)

Definition at line 168 of file mkfs.c.

References i2b(), IPB, rsect(), and wsect().

Referenced by ialloc(), iappend(), and main().

void wsect	(	uint	sec,
		void *	buf
	)

Definition at line 149 of file mkfs.c.

References exit(), fsfd, and write().

Referenced by balloc(), iappend(), main(), and winode().

uint xint

(

uint

x

)

Definition at line 43 of file mkfs.c.

Referenced by ialloc(), iappend(), and main().

ushort xshort

(

ushort

x

)

Definition at line 33 of file mkfs.c.

Referenced by ialloc(), and main().

---

Variable Documentation

uint bitblocks

Definition at line 20 of file mkfs.c.

Referenced by main().

uint freeblock

Definition at line 18 of file mkfs.c.

Referenced by iappend(), and main().

uint freeinode = 1

Definition at line 21 of file mkfs.c.

Referenced by ialloc().

int fsfd

Definition at line 15 of file mkfs.c.

Referenced by main(), rsect(), and wsect().

int nblocks = 995

Definition at line 11 of file mkfs.c.

Referenced by main().

int ninodes = 200

Definition at line 12 of file mkfs.c.

Referenced by balloc(), and main().

struct superblock sb

Definition at line 16 of file mkfs.c.

Referenced by main().

int size = 1024

Definition at line 13 of file mkfs.c.

Referenced by main().

uint usedblocks

Definition at line 19 of file mkfs.c.

Referenced by iappend(), and main().

char zeroes[512]

Definition at line 17 of file mkfs.c.

Referenced by main().