[PATCH 0/2] fix null deref in readdir_r callback and test

[Brian Chrisman <brchrisman@gmail.com>]

_readdir_single_dirent_cb is invoked with zeroed pointers when called beneath readdir_r rather than directly readdirplus_r.
Those pointers are then dereferenced in assignment.
There is still a problem in readdir_r, so I extended the basic scenario in testceph.cc.
Methods readdir_r and readdirplus_r are bypassed in cfuse.

Brian Chrisman (2):
  fix null deref when callback invoked en route from readdir_r rather
    than readdirplus_r
  add basic test case for readdir_r

 src/client/Client.cc   |    8 ++++++--
 src/client/testceph.cc |   36 +++++++++++++++++++++++++++++++++++-
 2 files changed, 41 insertions(+), 3 deletions(-)