scsi: sd: Keep disk read-only when re-reading partition

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If the read-only flag is true on a SCSI disk, re-reading the partition
table sets the flag back to false.

To observe this bug, you can run:

1. blockdev --setro /dev/sda
2. blockdev --rereadpt /dev/sda
3. blockdev --getro /dev/sda

This commit reads the disk's old state and combines it with the device
disk-reported state rather than unconditionally marking it as RW.

Reported-by: Li Ning <lining916740672@icloud.com>
Signed-off-by: Jeremy Cline <jeremy@jcline.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

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Jeremy Cline 2018-03-06 21:47:32 +00:00 • committed by Martin K. Petersen

parent 6a2cf8d366

commit 20bd1d026a

1 changed files with 2 additions and 1 deletions

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drivers/scsi/sd.c

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