fscrypt: new helper function - fscrypt_prepare_lookup()

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Introduce a helper function which prepares to look up the given dentry
in the given directory.  If the directory is encrypted, it handles
loading the directory's encryption key, setting the dentry's ->d_op to
fscrypt_d_ops, and setting DCACHE_ENCRYPTED_WITH_KEY if the directory's
encryption key is available.

Note: once all filesystems switch over to this, we'll be able to move
fscrypt_d_ops and fscrypt_set_encrypted_dentry() to fscrypt_private.h.

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 12:15:43 -07:00 • committed by Theodore Ts'o

parent 94b26f3672

commit 32c3cf028e

4 changed files with 53 additions and 0 deletions

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28

include/linux/fscrypt.h

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6

include/linux/fscrypt_notsupp.h

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1

include/linux/fscrypt_supp.h

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