pstore: Improve error reporting in case of backend overlap

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The pstore infrastructure supports one single backend at a time;
trying to load a another backend causes an error and displays a
message, introduced on commit 0d7cd09a3d ("pstore: Improve
register_pstore() error reporting").

Happens that this message is not really clear about the situation,
also the current error returned (-EPERM) isn't accurate, whereas
-EBUSY makes more sense. We have another place in the code that
relies in the -EBUSY return for a similar check.

So, make it consistent here by returning -EBUSY and using a
similar message in both scenarios.

Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221006224212.569555-2-gpiccoli@igalia.com

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Guilherme G. Piccoli 2022-10-06 19:42:05 -03:00 • committed by Kees Cook

parent 99b3b83785

commit d85644dc5c

1 changed files with 3 additions and 2 deletions

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fs/pstore/platform.c

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