fscrypt: new helper function - fscrypt_prepare_setattr()

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Introduce a helper function for filesystems to call when processing
->setattr() on a possibly-encrypted inode.  It handles enforcing that an
encrypted file can only be truncated if its encryption key is available.

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

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Eric Biggers 2017-10-09 12:15:44 -07:00 • committed by Theodore Ts'o

parent 32c3cf028e

commit 815dac33b2

1 changed files with 25 additions and 0 deletions

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include/linux/fscrypt.h

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