fscrypt: pass up error codes from ->get_context()

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It was possible for the ->get_context() operation to fail with a
specific error code, which was then not returned to the caller of
FS_IOC_SET_ENCRYPTION_POLICY or FS_IOC_GET_ENCRYPTION_POLICY.  Make sure
to pass through these error codes.  Also reorganize the code so that
->get_context() only needs to be called one time when setting an
encryption policy, and handle contexts of unrecognized sizes more
appropriately.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Eric Biggers 2016-12-05 11:12:48 -08:00 • committed by Theodore Ts'o

parent 868e1bc64d

commit efee590e4a

1 changed files with 23 additions and 31 deletions

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54

fs/crypto/policy.c

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