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compat_ioctl: move cdrom handlers to block/compat_ioctl.c 

These are shared by all cd-rom drivers and should have common
handlers. Do slight cosmetic cleanups in the process.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
hifive-unleashed-5.1
Arnd Bergmann 2007-10-09 13:23:56 +02:00 committed by Jens Axboe
parent 18cf7f8723
commit b3087cc4f3
2 changed files with 83 additions and 105 deletions
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83
block/compat_ioctl.c
View File

@ -92,6 +92,84 @@ static int compat_hdio_ioctl(struct inode *inode, struct file *file,
return error;
}
struct compat_cdrom_read_audio {
union cdrom_addr addr;
u8 addr_format;
compat_int_t nframes;
compat_caddr_t buf;
};
struct compat_cdrom_generic_command {
unsigned char cmd[CDROM_PACKET_SIZE];
compat_caddr_t buffer;
compat_uint_t buflen;
compat_int_t stat;
compat_caddr_t sense;
unsigned char data_direction;
compat_int_t quiet;
compat_int_t timeout;
compat_caddr_t reserved[1];
};
static int compat_cdrom_read_audio(struct inode *inode, struct file *file,
struct gendisk *disk, unsigned int cmd, unsigned long arg)
{
struct cdrom_read_audio __user *cdread_audio;
struct compat_cdrom_read_audio __user *cdread_audio32;
__u32 data;
void __user *datap;
cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio));
cdread_audio32 = compat_ptr(arg);
if (copy_in_user(&cdread_audio->addr,
&cdread_audio32->addr,
(sizeof(*cdread_audio32) -
sizeof(compat_caddr_t))))
return -EFAULT;
if (get_user(data, &cdread_audio32->buf))
return -EFAULT;
datap = compat_ptr(data);
if (put_user(datap, &cdread_audio->buf))
return -EFAULT;
return blkdev_driver_ioctl(inode, file, disk, cmd,
(unsigned long)cdread_audio);
}
static int compat_cdrom_generic_command(struct inode *inode, struct file *file,
struct gendisk *disk, unsigned int cmd, unsigned long arg)
{
struct cdrom_generic_command __user *cgc;
struct compat_cdrom_generic_command __user *cgc32;
u32 data;
unsigned char dir;
int itmp;
cgc = compat_alloc_user_space(sizeof(*cgc));
cgc32 = compat_ptr(arg);
if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
get_user(data, &cgc32->buffer) ||
put_user(compat_ptr(data), &cgc->buffer) ||
copy_in_user(&cgc->buflen, &cgc32->buflen,
(sizeof(unsigned int) + sizeof(int))) ||
get_user(data, &cgc32->sense) ||
put_user(compat_ptr(data), &cgc->sense) ||
get_user(dir, &cgc32->data_direction) ||
put_user(dir, &cgc->data_direction) ||
get_user(itmp, &cgc32->quiet) ||
put_user(itmp, &cgc->quiet) ||
get_user(itmp, &cgc32->timeout) ||
put_user(itmp, &cgc->timeout) ||
get_user(data, &cgc32->reserved[0]) ||
put_user(compat_ptr(data), &cgc->reserved[0]))
return -EFAULT;
return blkdev_driver_ioctl(inode, file, disk, cmd, (unsigned long)cgc);
}
struct compat_blkpg_ioctl_arg {
compat_int_t op;
compat_int_t flags;
@ -190,6 +268,11 @@ static int compat_blkdev_driver_ioctl(struct inode *inode, struct file *file,
case HDIO_GET_ADDRESS:
case HDIO_GET_BUSSTATE:
return compat_hdio_ioctl(inode, file, disk, cmd, arg);
case CDROMREADAUDIO:
return compat_cdrom_read_audio(inode, file, disk, cmd, arg);
case CDROM_SEND_PACKET:
return compat_cdrom_generic_command(inode, file, disk, cmd, arg);
/*
* No handler required for the ones below, we just need to
* convert arg to a 64 bit pointer.

105
fs/compat_ioctl.c
View File

@ -37,7 +37,6 @@
#include <linux/if_ppp.h>
#include <linux/if_pppox.h>
#include <linux/mtio.h>
#include <linux/cdrom.h>
#include <linux/auto_fs.h>
#include <linux/auto_fs4.h>
#include <linux/tty.h>
@ -1039,108 +1038,6 @@ static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
return err ? -EFAULT: 0;
}
struct cdrom_read_audio32 {
union cdrom_addr addr;
u8 addr_format;
compat_int_t nframes;
compat_caddr_t buf;
};
struct cdrom_generic_command32 {
unsigned char cmd[CDROM_PACKET_SIZE];
compat_caddr_t buffer;
compat_uint_t buflen;
compat_int_t stat;
compat_caddr_t sense;
unsigned char data_direction;
compat_int_t quiet;
compat_int_t timeout;
compat_caddr_t reserved[1];
};
static int cdrom_do_read_audio(unsigned int fd, unsigned int cmd, unsigned long arg)
{
struct cdrom_read_audio __user *cdread_audio;
struct cdrom_read_audio32 __user *cdread_audio32;
__u32 data;
void __user *datap;
cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio));
cdread_audio32 = compat_ptr(arg);
if (copy_in_user(&cdread_audio->addr,
&cdread_audio32->addr,
(sizeof(*cdread_audio32) -
sizeof(compat_caddr_t))))
return -EFAULT;
if (get_user(data, &cdread_audio32->buf))
return -EFAULT;
datap = compat_ptr(data);
if (put_user(datap, &cdread_audio->buf))
return -EFAULT;
return sys_ioctl(fd, cmd, (unsigned long) cdread_audio);
}
static int cdrom_do_generic_command(unsigned int fd, unsigned int cmd, unsigned long arg)
{
struct cdrom_generic_command __user *cgc;
struct cdrom_generic_command32 __user *cgc32;
u32 data;
unsigned char dir;
int itmp;
cgc = compat_alloc_user_space(sizeof(*cgc));
cgc32 = compat_ptr(arg);
if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
get_user(data, &cgc32->buffer) ||
put_user(compat_ptr(data), &cgc->buffer) ||
copy_in_user(&cgc->buflen, &cgc32->buflen,
(sizeof(unsigned int) + sizeof(int))) ||
get_user(data, &cgc32->sense) ||
put_user(compat_ptr(data), &cgc->sense) ||
get_user(dir, &cgc32->data_direction) ||
put_user(dir, &cgc->data_direction) ||
get_user(itmp, &cgc32->quiet) ||
put_user(itmp, &cgc->quiet) ||
get_user(itmp, &cgc32->timeout) ||
put_user(itmp, &cgc->timeout) ||
get_user(data, &cgc32->reserved[0]) ||
put_user(compat_ptr(data), &cgc->reserved[0]))
return -EFAULT;
return sys_ioctl(fd, cmd, (unsigned long) cgc);
}
static int cdrom_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
{
int err;
switch(cmd) {
case CDROMREADAUDIO:
err = cdrom_do_read_audio(fd, cmd, arg);
break;
case CDROM_SEND_PACKET:
err = cdrom_do_generic_command(fd, cmd, arg);
break;
default:
do {
static int count;
if (++count <= 20)
printk("cdrom_ioctl: Unknown cmd fd(%d) "
"cmd(%08x) arg(%08x)\n",
(int)fd, (unsigned int)cmd, (unsigned int)arg);
} while(0);
err = -EINVAL;
break;
};
return err;
}
#endif /* CONFIG_BLOCK */
#ifdef CONFIG_VT
@ -3147,8 +3044,6 @@ HANDLE_IOCTL(PPPIOCSACTIVE32, ppp_sock_fprog_ioctl_trans)
#ifdef CONFIG_BLOCK
HANDLE_IOCTL(MTIOCGET32, mt_ioctl_trans)
HANDLE_IOCTL(MTIOCPOS32, mt_ioctl_trans)
HANDLE_IOCTL(CDROMREADAUDIO, cdrom_ioctl_trans)
HANDLE_IOCTL(CDROM_SEND_PACKET, cdrom_ioctl_trans)
#endif
#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,unsigned int)
HANDLE_IOCTL(AUTOFS_IOC_SETTIMEOUT32, ioc_settimeout)