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block: replace fmode_t with a block-specific type for block open flags

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The only overlap between the block open flags mapped into the fmode_t and
other uses of fmode_t are FMODE_READ and FMODE_WRITE.  Define a new
blk_mode_t instead for use in blkdev_get_by_{dev,path}, ->open and
->ioctl and stop abusing fmode_t.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jack Wang <jinpu.wang@ionos.com>		[rnbd]
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/r/20230608110258.189493-28-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2023-06-08 13:02:55 +02:00
committed by Jens Axboe
parent 5e4ea83467
commit 05bdb99653
82 changed files with 334 additions and 315 deletions
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42
block/ioctl.c
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@@ -82,7 +82,7 @@ static int compat_blkpg_ioctl(struct block_device *bdev,
}
#endif
static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,
static int blk_ioctl_discard(struct block_device *bdev, blk_mode_t mode,
unsigned long arg)
{
uint64_t range[2];
@@ -90,7 +90,7 @@ static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,
struct inode *inode = bdev->bd_inode;
int err;
if (!(mode & FMODE_WRITE))
if (!(mode & BLK_OPEN_WRITE))
return -EBADF;
if (!bdev_max_discard_sectors(bdev))
@@ -120,14 +120,14 @@ fail:
return err;
}
static int blk_ioctl_secure_erase(struct block_device *bdev, fmode_t mode,
static int blk_ioctl_secure_erase(struct block_device *bdev, blk_mode_t mode,
void __user *argp)
{
uint64_t start, len;
uint64_t range[2];
int err;
if (!(mode & FMODE_WRITE))
if (!(mode & BLK_OPEN_WRITE))
return -EBADF;
if (!bdev_max_secure_erase_sectors(bdev))
return -EOPNOTSUPP;
@@ -151,7 +151,7 @@ static int blk_ioctl_secure_erase(struct block_device *bdev, fmode_t mode,
}
static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,
static int blk_ioctl_zeroout(struct block_device *bdev, blk_mode_t mode,
unsigned long arg)
{
uint64_t range[2];
@@ -159,7 +159,7 @@ static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,
struct inode *inode = bdev->bd_inode;
int err;
if (!(mode & FMODE_WRITE))
if (!(mode & BLK_OPEN_WRITE))
return -EBADF;
if (copy_from_user(range, (void __user *)arg, sizeof(range)))
@@ -240,7 +240,7 @@ static int compat_put_ulong(compat_ulong_t __user *argp, compat_ulong_t val)
* drivers that implement only commands that are completely compatible
* between 32-bit and 64-bit user space
*/
int blkdev_compat_ptr_ioctl(struct block_device *bdev, fmode_t mode,
int blkdev_compat_ptr_ioctl(struct block_device *bdev, blk_mode_t mode,
unsigned cmd, unsigned long arg)
{
struct gendisk *disk = bdev->bd_disk;
@@ -439,7 +439,7 @@ static int compat_hdio_getgeo(struct block_device *bdev,
#endif
/* set the logical block size */
static int blkdev_bszset(struct block_device *bdev, fmode_t mode,
static int blkdev_bszset(struct block_device *bdev, blk_mode_t mode,
int __user *argp)
{
int ret, n;
@@ -451,7 +451,7 @@ static int blkdev_bszset(struct block_device *bdev, fmode_t mode,
if (get_user(n, argp))
return -EFAULT;
if (mode & FMODE_EXCL)
if (mode & BLK_OPEN_EXCL)
return set_blocksize(bdev, n);
if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode, &bdev, NULL)))
@@ -467,7 +467,7 @@ static int blkdev_bszset(struct block_device *bdev, fmode_t mode,
* user space. Note the separate arg/argp parameters that are needed
* to deal with the compat_ptr() conversion.
*/
static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,
static int blkdev_common_ioctl(struct block_device *bdev, blk_mode_t mode,
unsigned int cmd, unsigned long arg,
void __user *argp)
{
@@ -560,18 +560,9 @@ long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
struct block_device *bdev = I_BDEV(file->f_mapping->host);
void __user *argp = (void __user *)arg;
fmode_t mode = file->f_mode;
blk_mode_t mode = file_to_blk_mode(file);
int ret;
/*
* O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have
* to updated it before every ioctl.
*/
if (file->f_flags & O_NDELAY)
mode |= FMODE_NDELAY;
else
mode &= ~FMODE_NDELAY;
switch (cmd) {
/* These need separate implementations for the data structure */
case HDIO_GETGEO:
@@ -630,16 +621,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
void __user *argp = compat_ptr(arg);
struct block_device *bdev = I_BDEV(file->f_mapping->host);
struct gendisk *disk = bdev->bd_disk;
fmode_t mode = file->f_mode;
/*
* O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have
* to updated it before every ioctl.
*/
if (file->f_flags & O_NDELAY)
mode |= FMODE_NDELAY;
else
mode &= ~FMODE_NDELAY;
blk_mode_t mode = file_to_blk_mode(file);
switch (cmd) {
/* These need separate implementations for the data structure */