Re: [PATCH] block: fix ioctl return error with GENHD_FL_NO_PART

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I don't think so.

GENHD_FL_NO_PART means "partition support is disabled". If users try to add or resize partition on the disk with this flag, kernel should remind them that the parameter of device is wrong.
So I think it's appropriate to return -EINVAL.

Thanks.

在 2023/10/17 16:09, Li Wang 写道:
GENHD_FL_NO_PART means no device(-ENXIO), not parameter error(-EINVAL).

test case with parted command:
@dd if=/dev/zero of=./blk-file bs=1M count=200
@losetup /dev/loop0 ./blk-file
@parted -s /dev/loop0 mklabel MSDOS
Error: Partition(s) 1, ..., 64 on /dev/loop0 have been written,
but we have been unable to inform the kernel of the change,
probably because it/they are in use. As a result,
the old partition(s) will remain in use. You should reboot now
before making further changes.
@echo $?
1

Fixes: 1a721de8489f ("block: don't add or resize partition on the disk with GENHD_FL_NO_PART")
Signed-off-by: Li Wang <li.wang@xxxxxxxxxxxxx>
---
  block/ioctl.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/ioctl.c b/block/ioctl.c
index d5f5cd61efd7..701c64cd67e8 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -21,7 +21,7 @@ static int blkpg_do_ioctl(struct block_device *bdev,
  	long long start, length;
if (disk->flags & GENHD_FL_NO_PART)
-		return -EINVAL;
+		return -ENXIO;
  	if (!capable(CAP_SYS_ADMIN))
  		return -EACCES;
  	if (copy_from_user(&p, upart, sizeof(struct blkpg_partition)))



[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux