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/*
*
* (c) 2008-2009 Laurent Vivier <Laurent@lvivier.info>
*
* This file has been copied from EMILE, http://emile.sf.net
*
*/
#include "libext2.h"
#include "ext2_utils.h"
#include "openbios/fs.h"
#include "libc/vsprintf.h"
typedef struct {
enum { FILE, DIR } type;
union {
ext2_FILE *file;
ext2_DIR *dir;
};
} ext2_COMMON;
static void
umount( fs_ops_t *fs )
{
ext2_VOLUME *volume = (ext2_VOLUME *)fs->fs_data;
ext2_umount( volume );
}
static const int days_month[12] =
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
static const int days_month_leap[12] =
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
static inline int is_leap(int year)
{
return ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
}
static void
print_date(time_t sec)
{
unsigned int second, minute, hour, month, day, year;
int current;
const int *days;
second = sec % 60;
sec /= 60;
minute = sec % 60;
sec /= 60;
hour = sec % 24;
sec /= 24;
year = sec * 100 / 36525;
sec -= year * 36525 / 100;
year += 1970;
days = is_leap(year) ? days_month_leap : days_month;
current = 0;
month = 0;
while (month < 12) {
if (sec <= current + days[month]) {
break;
}
current += days[month];
month++;
}
month++;
day = sec - current + 1;
forth_printf("%d-%02d-%02d %02d:%02d:%02d ",
year, month, day, hour, minute, second);
}
static void
dir_fs ( file_desc_t *fd)
{
ext2_COMMON *common = (ext2_COMMON *)fd;
struct ext2_dir_entry_2 *entry;
struct ext2_inode inode;
if (common->type != DIR)
return;
forth_printf("\n");
while ( (entry = ext2_readdir(common->dir)) ) {
ext2_get_inode(common->dir->volume, entry->inode, &inode);
forth_printf("% 10d ", inode.i_size);
print_date(inode.i_mtime);
if (S_ISDIR(inode.i_mode))
forth_printf("%s\\\n", entry->name);
else
forth_printf("%s\n", entry->name);
}
}
static file_desc_t *
open_path( fs_ops_t *fs, const char *path )
{
ext2_VOLUME *volume = (ext2_VOLUME *)fs->fs_data;
ext2_COMMON *common;
common = (ext2_COMMON*)malloc(sizeof(*common));
if (common == NULL)
return NULL;
common->dir = ext2_opendir(volume, path);
if (common->dir == NULL) {
common->file = ext2_open(volume, path);
if (common->file == NULL) {
free(common);
return NULL;
}
common->type = FILE;
return (file_desc_t *)common;
}
common->type = DIR;
return (file_desc_t *)common;
}
static char *
get_path( file_desc_t *fd, char *buf, int size )
{
ext2_COMMON *common =(ext2_COMMON *)fd;
if (common->type != FILE)
return NULL;
strncpy(buf, common->file->path, size);
return buf;
}
static int
file_lseek( file_desc_t *fd, off_t offs, int whence )
{
ext2_COMMON *common =(ext2_COMMON *)fd;
if (common->type != FILE)
return -1;
return ext2_lseek(common->file, offs, whence);
}
static void
file_close( file_desc_t *fd )
{
ext2_COMMON *common =(ext2_COMMON *)fd;
if (common->type == FILE)
ext2_close(common->file);
else if (common->type == DIR)
ext2_closedir(common->dir);
free(common);
}
static int
file_read( file_desc_t *fd, void *buf, size_t count )
{
ext2_COMMON *common =(ext2_COMMON *)fd;
if (common->type != FILE)
return -1;
return ext2_read(common->file, buf, count);
}
static const char *
get_fstype( fs_ops_t *fs)
{
return "EXT2";
}
static const fs_ops_t ext2_ops = {
.dir = dir_fs,
.close_fs = umount,
.open_path = open_path,
.get_path = get_path,
.close = file_close,
.read = file_read,
.lseek = file_lseek,
.get_fstype = get_fstype,
};
int fs_ext2_open(int fd, fs_ops_t *fs)
{
ext2_VOLUME *volume;
volume = ext2_mount(fd);
if (volume == NULL)
return -1;
*fs = ext2_ops;
fs->fs_data = volume;
return 0;
}
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