From 1c925604e1038c7c65b91a92d14dc972b3a70a97 Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Fri, 31 Oct 2008 22:39:46 +0100 Subject: [PATCH] Fix block dev compat ioctl handling Commit 33c2dca4957bd0da3e1af7b96d0758d97e708ef6 (trim file propagation in block/compat_ioctl.c) removed the handling of some ioctls from compat_blkdev_driver_ioctl. That caused them to be rejected as unknown by the compat layer. Signed-off-by: Andreas Schwab Cc: Al Viro Signed-off-by: Al Viro --- block/compat_ioctl.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'block/compat_ioctl.c') diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index 3d3e7a46f38..d43e6087bad 100644 --- a/block/compat_ioctl.c +++ b/block/compat_ioctl.c @@ -677,6 +677,29 @@ static int compat_blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode, case DVD_WRITE_STRUCT: case DVD_AUTH: arg = (unsigned long)compat_ptr(arg); + /* These intepret arg as an unsigned long, not as a pointer, + * so we must not do compat_ptr() conversion. */ + case HDIO_SET_MULTCOUNT: + case HDIO_SET_UNMASKINTR: + case HDIO_SET_KEEPSETTINGS: + case HDIO_SET_32BIT: + case HDIO_SET_NOWERR: + case HDIO_SET_DMA: + case HDIO_SET_PIO_MODE: + case HDIO_SET_NICE: + case HDIO_SET_WCACHE: + case HDIO_SET_ACOUSTIC: + case HDIO_SET_BUSSTATE: + case HDIO_SET_ADDRESS: + case CDROMEJECT_SW: + case CDROM_SET_OPTIONS: + case CDROM_CLEAR_OPTIONS: + case CDROM_SELECT_SPEED: + case CDROM_SELECT_DISC: + case CDROM_MEDIA_CHANGED: + case CDROM_DRIVE_STATUS: + case CDROM_LOCKDOOR: + case CDROM_DEBUG: break; default: /* unknown ioctl number */ -- cgit v1.2.3 From fd4ce1acd0f8558033b1a6968001552bd7671e6d Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 5 Nov 2008 14:58:42 +0100 Subject: [PATCH 1/2] kill FMODE_NDELAY_NOW Update FMODE_NDELAY before each ioctl call so that we can kill the magic FMODE_NDELAY_NOW. It would be even better to do this directly in setfl(), but for that we'd need to have FMODE_NDELAY for all files, not just block special files. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- block/compat_ioctl.c | 8 +++++++- drivers/scsi/sd.c | 2 +- drivers/scsi/sr.c | 2 +- fs/block_dev.c | 10 +++++++++- include/linux/fs.h | 1 - 5 files changed, 18 insertions(+), 5 deletions(-) (limited to 'block/compat_ioctl.c') diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index d43e6087bad..67eb93cff69 100644 --- a/block/compat_ioctl.c +++ b/block/compat_ioctl.c @@ -722,8 +722,14 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) struct backing_dev_info *bdi; loff_t size; + /* + * 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_NOW; + mode |= FMODE_NDELAY; + else + mode &= ~FMODE_NDELAY; switch (cmd) { case HDIO_GETGEO: diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index c9e1242eaf2..5081b3981d3 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -757,7 +757,7 @@ static int sd_ioctl(struct block_device *bdev, fmode_t mode, * access to the device is prohibited. */ error = scsi_nonblockable_ioctl(sdp, cmd, p, - (mode & FMODE_NDELAY_NOW) != 0); + (mode & FMODE_NDELAY) != 0); if (!scsi_block_when_processing_errors(sdp) || !error) return error; diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 62b6633e3a9..45b66b98a51 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -521,7 +521,7 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, * if it doesn't recognise the ioctl */ ret = scsi_nonblockable_ioctl(sdev, cmd, argp, - (mode & FMODE_NDELAY_NOW) != 0); + (mode & FMODE_NDELAY) != 0); if (ret != -ENODEV) return ret; return scsi_ioctl(sdev, cmd, argp); diff --git a/fs/block_dev.c b/fs/block_dev.c index 7c727523bc5..99e0ae1a4c7 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1206,8 +1206,16 @@ static long block_ioctl(struct file *file, unsigned cmd, unsigned long arg) { struct block_device *bdev = I_BDEV(file->f_mapping->host); 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_NOW; + mode |= FMODE_NDELAY; + else + mode &= ~FMODE_NDELAY; + return blkdev_ioctl(bdev, mode, cmd, arg); } diff --git a/include/linux/fs.h b/include/linux/fs.h index 0dcdd9458f4..b3345a90e11 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -79,7 +79,6 @@ extern int dir_notify_enable; #define FMODE_NDELAY ((__force fmode_t)32) #define FMODE_EXCL ((__force fmode_t)64) #define FMODE_WRITE_IOCTL ((__force fmode_t)128) -#define FMODE_NDELAY_NOW ((__force fmode_t)256) #define RW_MASK 1 #define RWA_MASK 2 -- cgit v1.2.3