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move all specific structure to ext2.h and stream_* generic structures in interface

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This commit is contained in:
Laurent Vivier 2008-04-20 16:25:24 +00:00
parent c017df52ba
commit 0b40281c38
14 changed files with 105 additions and 56 deletions
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4
libext2/Makefile
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@ -19,12 +19,12 @@ LIBRARY = libext2.a
SOURCES = ext2_mount.c ext2_opendir.c \
ext2_closedir.c \
ext2_open.c \
ext2_open.c ext2_init.c \
ext2_read.c ext2_close.c \
ext2_lseek.c ext2_fstat.c \
ext2_utils.c ext2_readdir.c
HEADERS = libext2.h ext2_utils.h
HEADERS = libext2.h ext2_utils.h ext2.h
all:
test -d $(TARGET) || mkdir $(TARGET)

33
libext2/ext2.h Normal file
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@ -0,0 +1,33 @@
/*
*
* (c) 2008 Laurent Vivier <Laurent@lvivier.info>
*
*/
#ifndef __EXT2_H__
#define __EXT2_H__
#include <unistd.h>
#include <linux/ext2_fs.h>
#include <libstream.h>
typedef struct ext2_VOLUME {
device_io_t *device;
struct ext2_super_block *super;
unsigned int current;
char *buffer;
} ext2_VOLUME;
typedef struct ext2_DIR {
ext2_VOLUME *volume;
struct ext2_inode *inode;
off_t index;
} ext2_DIR;
typedef struct ext2_FILE {
ext2_VOLUME *volume;
struct ext2_inode *inode;
off_t offset;
} ext2_FILE;
#endif /* __LIBEXT2_H__ */

5
libext2/ext2_close.c
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@ -6,11 +6,12 @@
#include <stdlib.h>
#include "libext2.h"
#include "ext2.h"
void ext2_close(ext2_FILE *file)
void ext2_close(stream_FILE *file)
{
if (file == NULL)
return;
free(file->inode);
free(((ext2_FILE*)file)->inode);
free(file);
}

5
libext2/ext2_closedir.c
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@ -6,11 +6,12 @@
#include <stdlib.h>
#include "libext2.h"
#include "ext2.h"
void ext2_closedir(ext2_DIR *dir)
void ext2_closedir(stream_DIR *dir)
{
if (dir == NULL)
return;
free(dir->inode);
free(((ext2_DIR*)dir)->inode);
free(dir);
}

5
libext2/ext2_fstat.c
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@ -5,9 +5,10 @@
*/
#include "libext2.h"
#include "ext2.h"
int ext2_fstat(ext2_FILE *file, struct stream_stat *buf)
int ext2_fstat(stream_FILE *file, struct stream_stat *buf)
{
buf->st_size = file->inode->i_size;
buf->st_size = ((ext2_FILE*)file)->inode->i_size;
return 0;
}

20
libext2/ext2_init.c Normal file
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@ -0,0 +1,20 @@
/*
*
* (c) 2008 Laurent Vivier <Laurent@lvivier.info>
*
*/
#include "libext2.h"
int ext2_init(device_io_t *device, filesystem_io_t *fs)
{
fs->mount = ext2_mount;
fs->open = ext2_open;
fs->read = ext2_read;
fs->lseek = ext2_lseek;
fs->close = ext2_close;
fs->umount = ext2_umount;
fs->fstat = ext2_fstat;
return 0;
}

4
libext2/ext2_lseek.c
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@ -5,9 +5,11 @@
*/
#include "libext2.h"
#include "ext2.h"
int ext2_lseek(ext2_FILE *file, long offset, int whence)
int ext2_lseek(stream_FILE *_file, long offset, int whence)
{
ext2_FILE *file = (ext2_FILE*)_file;
long new_offset;
switch(whence)

9
libext2/ext2_mount.c
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@ -5,12 +5,14 @@
*/
#include <stdlib.h>
#include <libstream.h>
#include "libext2.h"
#include "ext2.h"
#include "ext2_utils.h"
#define SB_OFFSET (2)
ext2_VOLUME* ext2_mount(device_io_t *device)
stream_VOLUME* ext2_mount(device_io_t *device)
{
ext2_VOLUME *volume;
struct ext2_super_block *super;
@ -46,11 +48,12 @@ ext2_VOLUME* ext2_mount(device_io_t *device)
volume->current = -1;
ext2_read_block(volume, 0);
return volume;
return (stream_VOLUME*)volume;
}
int ext2_umount(ext2_VOLUME* volume)
int ext2_umount(stream_VOLUME* _volume)
{
ext2_VOLUME *volume = (ext2_VOLUME*)_volume;
if (volume == NULL)
return -1;
free(volume->super);

11
libext2/ext2_open.c
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@ -7,16 +7,17 @@
#include <stdlib.h>
#include "libext2.h"
#include "ext2.h"
#include "ext2_utils.h"
ext2_FILE* ext2_open(ext2_VOLUME *volume, char* pathname)
stream_FILE* ext2_open(stream_VOLUME *volume, char* pathname)
{
ext2_FILE *file;
struct ext2_inode *inode;
int ino;
int ret;
ino = ext2_seek_name(volume, pathname);
ino = ext2_seek_name((ext2_VOLUME*)volume, pathname);
if (ino == 0)
return NULL;
@ -24,7 +25,7 @@ ext2_FILE* ext2_open(ext2_VOLUME *volume, char* pathname)
if (inode == NULL)
return NULL;
ret = ext2_get_inode(volume, ino, inode);
ret = ext2_get_inode((ext2_VOLUME*)volume, ino, inode);
if (ret == -1) {
free(inode);
return NULL;
@ -35,9 +36,9 @@ ext2_FILE* ext2_open(ext2_VOLUME *volume, char* pathname)
free(inode);
return NULL;
}
file->volume = volume;
file->volume = (ext2_VOLUME*)volume;
file->inode = inode;
file->offset = 0;
return file;
return (stream_FILE*)file;
}

11
libext2/ext2_opendir.c
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@ -8,16 +8,17 @@
#include <sys/stat.h>
#include "libext2.h"
#include "ext2.h"
#include "ext2_utils.h"
ext2_DIR* ext2_opendir(ext2_VOLUME *volume, char *name)
stream_DIR* ext2_opendir(stream_VOLUME *volume, char *name)
{
ext2_DIR* dir;
int ino;
struct ext2_inode *inode;
int ret;
ino = ext2_seek_name(volume, name);
ino = ext2_seek_name((ext2_VOLUME*)volume, name);
if (ino == 0)
return NULL;
@ -25,7 +26,7 @@ ext2_DIR* ext2_opendir(ext2_VOLUME *volume, char *name)
if (inode == NULL)
return NULL;
ret = ext2_get_inode(volume, ino, inode);
ret = ext2_get_inode((ext2_VOLUME*)volume, ino, inode);
if (ret == -1) {
free(inode);
return NULL;
@ -41,9 +42,9 @@ ext2_DIR* ext2_opendir(ext2_VOLUME *volume, char *name)
free(inode);
return NULL;
}
dir->volume = volume;
dir->volume = (ext2_VOLUME*)volume;
dir->inode = inode;
dir->index = 0;
return dir;
return (stream_DIR*)dir;
}

4
libext2/ext2_read.c
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@ -5,10 +5,12 @@
*/
#include "libext2.h"
#include "ext2.h"
#include "ext2_utils.h"
ssize_t ext2_read(ext2_FILE *file, void *buf, size_t count)
size_t ext2_read(stream_FILE *_file, void *buf, size_t count)
{
ext2_FILE *file = (ext2_FILE*)_file;
int ret;
ret = ext2_read_data(file->volume, file->inode, file->offset,

3
libext2/ext2_readdir.c
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@ -9,8 +9,9 @@
static struct ext2_dir_entry_2 entry;
struct ext2_dir_entry_2 *ext2_readdir(ext2_DIR *dir)
struct ext2_dir_entry_2 *ext2_readdir(stream_DIR *_dir)
{
ext2_DIR *dir = (ext2_DIR*)_dir;
int ret;
ret = ext2_dir_entry(dir->volume, dir->inode, dir->index, &entry);

4
libext2/ext2_utils.h
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@ -7,6 +7,10 @@
#ifndef __EXT2_UTILS_H__
#define __EXT2_UTILS_H__
#include <linux/ext2_fs.h>
#include <libstream.h>
#include "ext2.h"
extern void ext2_get_super(device_io_t *device, struct ext2_super_block *super);
extern void ext2_read_block(ext2_VOLUME* volume, unsigned int fsblock);
extern void ext2_get_group_desc(ext2_VOLUME* volume,

43
libext2/libext2.h
View File

@ -7,39 +7,18 @@
#ifndef __LIBEXT2_H__
#define __LIBEXT2_H__
#include <unistd.h>
#include <linux/ext2_fs.h>
#include <libstream.h>
typedef struct ext2_VOLUME {
device_io_t *device;
struct ext2_super_block *super;
unsigned int current;
char *buffer;
} ext2_VOLUME;
typedef struct ext2_DIR {
ext2_VOLUME *volume;
struct ext2_inode *inode;
off_t index;
} ext2_DIR;
typedef struct ext2_FILE {
ext2_VOLUME *volume;
struct ext2_inode *inode;
off_t offset;
} ext2_FILE;
extern ext2_VOLUME* ext2_mount(device_io_t *device);
extern int ext2_umount(ext2_VOLUME *volume);
extern ext2_DIR* ext2_opendir(ext2_VOLUME *, char *name);
extern struct ext2_dir_entry_2* ext2_readdir(ext2_DIR* dir);
extern void ext2_closedir(ext2_DIR *dir);
extern ext2_FILE* ext2_open(ext2_VOLUME *, char* pathname);
extern ssize_t ext2_read(ext2_FILE *file, void *buf, size_t count);
extern void ext2_close(ext2_FILE *file);
extern int ext2_lseek(ext2_FILE *file, long offset, int whence);
extern int ext2_fstat(ext2_FILE *file, struct stream_stat *buf);
extern int ext2_init(device_io_t *device, filesystem_io_t *fs);
extern stream_VOLUME* ext2_mount(device_io_t *device);
extern int ext2_umount(stream_VOLUME *volume);
extern stream_DIR* ext2_opendir(stream_VOLUME *, char *name);
extern struct ext2_dir_entry_2* ext2_readdir(stream_DIR* dir);
extern void ext2_closedir(stream_DIR *dir);
extern stream_FILE* ext2_open(stream_VOLUME *, char* pathname);
extern size_t ext2_read(stream_FILE *file, void *buf, size_t count);
extern void ext2_close(stream_FILE *file);
extern int ext2_lseek(stream_FILE *file, long offset, int whence);
extern int ext2_fstat(stream_FILE *file, struct stream_stat *buf);
#endif /* __LIBEXT2_H__ */