A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

fscrypt: new helper function - fscrypt_prepare_link()

Browse source 
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 <[email protected]>
Signed-off-by: Eric Biggers <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]>
This commit is contained in:
Eric Biggers 2017-10-09 12:15:41 -07:00 • committed by Theodore Ts'o
commit 0ea87a9644
4 changed files with 49 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

15
fs/crypto/hooks.c
View file

@ -47,3 +47,18 @@ int fscrypt_file_open(struct inode *inode, struct file *filp)
return err;
}
EXPORT_SYMBOL_GPL(fscrypt_file_open);
int __fscrypt_prepare_link(struct inode *inode, struct inode *dir)
{
int err;
err = fscrypt_require_key(dir);
if (err)
return err;
if (!fscrypt_has_permitted_context(dir, inode))
return -EPERM;
return 0;
}
EXPORT_SYMBOL_GPL(__fscrypt_prepare_link);