ceph: add helpers for converting names for userland presentation

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Define a new ceph_fname struct that we can use to carry information
about encrypted dentry names. Add helpers for working with these
objects, including ceph_fname_to_usr which formats an encrypted filename
for userland presentation.

[ xiubli: fix resulting name length check -- neither name_len nor
  ctext_len should exceed NAME_MAX ]

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-and-tested-by: Luís Henriques <lhenriques@suse.de>
Reviewed-by: Milind Changire <mchangir@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

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Jeff Layton 2021-03-26 12:26:18 -04:00 • committed by Ilya Dryomov

parent c526760181

commit 457117f077

2 changed files with 123 additions and 0 deletions

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77

fs/ceph/crypto.c

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46

fs/ceph/crypto.h

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