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mtd: add OOB ioctls for >4GiB devices 

Signed-off-by: Kevin Cernekee <kpc.mtd@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Kevin Cernekee 2009-04-08 22:53:49 -07:00 committed by David Woodhouse
parent 9771854040
commit aea7cea9fa
3 changed files with 39 additions and 0 deletions
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28
drivers/mtd/mtdchar.c
View File

@ -607,6 +607,34 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
break;
}
case MEMWRITEOOB64:
{
struct mtd_oob_buf64 buf;
struct mtd_oob_buf64 __user *buf_user = argp;
if (copy_from_user(&buf, argp, sizeof(buf)))
ret = -EFAULT;
else
ret = mtd_do_writeoob(file, mtd, buf.start, buf.length,
(void __user *)(uintptr_t)buf.usr_ptr,
&buf_user->length);
break;
}
case MEMREADOOB64:
{
struct mtd_oob_buf64 buf;
struct mtd_oob_buf64 __user *buf_user = argp;
if (copy_from_user(&buf, argp, sizeof(buf)))
ret = -EFAULT;
else
ret = mtd_do_readoob(mtd, buf.start, buf.length,
(void __user *)(uintptr_t)buf.usr_ptr,
&buf_user->length);
break;
}
case MEMLOCK:
{
struct erase_info_user einfo;

2
fs/compat_ioctl.c
View File

@ -2411,6 +2411,8 @@ COMPATIBLE_IOCTL(ECCGETLAYOUT)
COMPATIBLE_IOCTL(ECCGETSTATS)
COMPATIBLE_IOCTL(MTDFILEMODE)
COMPATIBLE_IOCTL(MEMERASE64)
COMPATIBLE_IOCTL(MEMREADOOB64)
COMPATIBLE_IOCTL(MEMWRITEOOB64)
/* NBD */
ULONG_IOCTL(NBD_SET_SOCK)
ULONG_IOCTL(NBD_SET_BLKSIZE)

9
include/mtd/mtd-abi.h
View File

@ -23,6 +23,13 @@ struct mtd_oob_buf {
unsigned char __user *ptr;
};
struct mtd_oob_buf64 {
__u64 start;
__u32 pad;
__u32 length;
__u64 usr_ptr;
};
#define MTD_ABSENT 0
#define MTD_RAM 1
#define MTD_ROM 2
@ -101,6 +108,8 @@ struct otp_info {
#define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats)
#define MTDFILEMODE _IO('M', 19)
#define MEMERASE64 _IOW('M', 20, struct erase_info_user64)
#define MEMWRITEOOB64 _IOWR('M', 21, struct mtd_oob_buf64)
#define MEMREADOOB64 _IOWR('M', 22, struct mtd_oob_buf64)
/*
* Obsolete legacy interface. Keep it in order not to break userspace