Bug#353755: [Pkg-cryptsetup-devel] Bug#353755: cryptsetup: luksOpen on read only device without --readonly fails silently

[Jonas Meurer]

On 20/02/2006 Bastian Kleineidam wrote:
> the command "cryptsetup luksOpen /dev/hdc" does not work here. The
> /dev/mapper/_image device is not created, but the exit code is still
> zero. The /dev/hdc is my DVD-ROM device with a burned LUKS image.
> The strace output reveals that this call fails:
> ioctl(3, DM_TABLE_LOAD, 0x809cd80)      = -1 EINVAL (Invalid argument)
> 
> However it works when I add the "--readonly" option:
> ioctl(3, DM_TABLE_LOAD, 0x809cda0)      = 0
> 
> The strace outputs for both cases are attached, with private data
> (password and image data) removed.
> 
> I expected the command without --readonly to not fail silently, but
> to print an error message and exit with a non-zero status.

hello bastian,

i guess that this is the same upstream bug as reported in #258376

even if it's not about the same particular action, it's the same general
problem, that cryptsetup prints missleading messages, and even fails
(exitcode 1) with error-messages in cases where it should only print a
warning.

can you verify this? if yes, the bugs could  be merged.

...
 jonas