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author | David Howells <dhowells@redhat.com> | 2008-04-29 01:01:31 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:17 -0700 |
commit | 69664cf16af4f31cd54d77948a4baf9c7e0ca7b9 (patch) | |
tree | 3ff4ecae21c140a2beed25cfa9e55b788f9814ac /security/keys/Makefile | |
parent | 6b79ccb5144f9ffb4d4596c23e7570238dd12abc (diff) | |
download | linux-stable-69664cf16af4f31cd54d77948a4baf9c7e0ca7b9.tar.gz linux-stable-69664cf16af4f31cd54d77948a4baf9c7e0ca7b9.tar.bz2 linux-stable-69664cf16af4f31cd54d77948a4baf9c7e0ca7b9.zip |
keys: don't generate user and user session keyrings unless they're accessed
Don't generate the per-UID user and user session keyrings unless they're
explicitly accessed. This solves a problem during a login process whereby
set*uid() is called before the SELinux PAM module, resulting in the per-UID
keyrings having the wrong security labels.
This also cures the problem of multiple per-UID keyrings sometimes appearing
due to PAM modules (including pam_keyinit) setuiding and causing user_structs
to come into and go out of existence whilst the session keyring pins the user
keyring. This is achieved by first searching for extant per-UID keyrings
before inventing new ones.
The serial bound argument is also dropped from find_keyring_by_name() as it's
not currently made use of (setting it to 0 disables the feature).
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: <kwc@citi.umich.edu>
Cc: <arunsr@cse.iitk.ac.in>
Cc: <dwalsh@redhat.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: James Morris <jmorris@namei.org>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security/keys/Makefile')
0 files changed, 0 insertions, 0 deletions