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authorEric Biggers <ebiggers@google.com>2017-10-09 12:15:41 -0700
committerTheodore Ts'o <tytso@mit.edu>2017-10-18 19:52:38 -0400
commit0ea87a9644ebb5c9a3b100585d10533366de3269 (patch)
tree3934cd8c3a6f16ecbabd3b2909dba12bfde6b4ce /include/linux/fscrypt_notsupp.h
parentefcc7ae2c9172d9a7ae94afdaf066a7abf0b9a90 (diff)
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op-kernel-dev-0ea87a9644ebb5c9a3b100585d10533366de3269.tar.gz
fscrypt: new helper function - fscrypt_prepare_link()
Introduce a helper function which prepares to link an inode into a possibly-encrypted directory. It handles setting up the target directory's encryption key, then verifying that the link won't violate the constraint that all files in an encrypted directory tree use the same encryption policy. Acked-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux/fscrypt_notsupp.h')
-rw-r--r--include/linux/fscrypt_notsupp.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/fscrypt_notsupp.h b/include/linux/fscrypt_notsupp.h
index 162da65..d7d1039 100644
--- a/include/linux/fscrypt_notsupp.h
+++ b/include/linux/fscrypt_notsupp.h
@@ -186,4 +186,10 @@ static inline int fscrypt_file_open(struct inode *inode, struct file *filp)
return 0;
}
+static inline int __fscrypt_prepare_link(struct inode *inode,
+ struct inode *dir)
+{
+ return -EOPNOTSUPP;
+}
+
#endif /* _LINUX_FSCRYPT_NOTSUPP_H */
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