cddrv.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include "accdvd_internal.h"
 
static int cddrv_adddrv(iop_device_t *drv);
static int cddrv_deldrv(iop_device_t *drv);
static int cddrv_open(iop_file_t *io, const char *name, int flg);
static int cddrv_close(iop_file_t *io);
static int cddrv_read(iop_file_t *io, void *buf, int cnt);
static int cddrv_write(iop_file_t *io, void *buf, int cnt);
static int cddrv_lseek(iop_file_t *io, int offset, int whence);
static int cddrv_ioctl(iop_file_t *io, int cmd, void *arg);
static int cddrv_dummy();
 
static iop_device_ops_t Cddrv_ops = {
    &cddrv_adddrv,
    &cddrv_deldrv,
    &cddrv_dummy,
    &cddrv_open,
    &cddrv_close,
    &cddrv_read,
    &cddrv_write,
    &cddrv_lseek,
    &cddrv_ioctl,
    &cddrv_dummy,
    &cddrv_dummy,
    &cddrv_dummy,
    &cddrv_dummy,
    &cddrv_dummy,
    &cddrv_dummy,
    &cddrv_dummy,
    &cddrv_dummy};
 
static iop_device_t Cddrv = {"cdrom", 16u, 0u, "ATAPI_C/DVD-ROM", &Cddrv_ops};
 
static int cddrv_adddrv(iop_device_t *drv)
{
    (void)drv;
 
    return 0;
}
 
static int cddrv_deldrv(iop_device_t *drv)
{
    (void)drv;
 
    return 0;
}
 
static int cddrv_open(iop_file_t *io, const char *name, int flg)
{
    int ret;
    struct cdfs_file *v9;
    struct cdfs_file *file;
    acUint32 d_size;
    struct cdfs_dirent dirent;
 
    ret = 1;
    while ( ret > 0 )
    {
        int ret_v2;
 
        if ( io->unit )
        {
            return -ENXIO;
        }
        if ( flg != 1 )
        {
            return -EINVAL;
        }
        ret_v2 = cdfs_lookup(&dirent, name, strlen(name));
        if ( ret_v2 >= 0 )
        {
            break;
        }
        ret = cdfs_recover(ret_v2);
    }
    if ( (dirent.d_ftype & 2) != 0 )
    {
        return -EISDIR;
    }
    v9 = (struct cdfs_file *)AllocSysMemory(1, 16, 0);
    file = v9;
    if ( !v9 )
    {
        return -ENOMEM;
    }
    io->privdata = v9;
    v9->f_lsn = dirent.d_lsn;
    d_size = dirent.d_size;
    file->f_pos = 0;
    file->f_size = d_size;
    return 0;
}
 
static int cddrv_close(iop_file_t *io)
{
    void *ptr;
 
    ptr = io->privdata;
    io->privdata = 0;
    if ( ptr )
        FreeSysMemory(ptr);
    return 0;
}
 
static int cddrv_read(iop_file_t *io, void *buf, int cnt)
{
    if ( !buf || !cnt )
        return 0;
    return cdfs_read((struct cdfs_file *)io->privdata, buf, cnt);
}
 
static int cddrv_write(iop_file_t *io, void *buf, int cnt)
{
    (void)io;
    (void)buf;
    (void)cnt;
 
    return -EROFS;
}
 
static int cddrv_lseek(iop_file_t *io, int offset, int whence)
{
    struct cdfs_file *file;
    acUint32 size;
 
    file = (struct cdfs_file *)io->privdata;
    size = file->f_size;
    if ( whence == 1 )
    {
        offset += file->f_pos;
    }
    else if ( whence == 2 )
    {
        offset += size;
    }
    if ( size < (unsigned int)offset )
        offset = file->f_size;
    file->f_pos = offset;
    return offset;
}
 
static int cddrv_ioctl(iop_file_t *io, int cmd, void *arg)
{
    (void)io;
    (void)cmd;
    (void)arg;
 
    return -EINVAL;
}
 
static int cddrv_dummy()
{
    return -EINVAL;
}
 
int cddrv_module_start(int argc, char **argv)
{
    int v2;
    int v3;
 
    (void)argc;
    (void)argv;
    v2 = AddDrv(&Cddrv);
    v3 = 0;
    if ( v2 < 0 )
        return -16;
    return v3;
}
 
int cddrv_module_stop()
{
    int v0;
    int v1;
 
    v0 = DelDrv(Cddrv.name);
    v1 = 0;
    if ( v0 < 0 )
        return -16;
    return v1;
}
 
int cddrv_module_restart(int argc, char **argv)
{
    (void)argc;
    (void)argv;
 
    return -88;
}
 
int cddrv_module_status()
{
    return 0;
}