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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-09 04:56:57 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-09 04:56:57 +0200 |
commit | 0f75ef6a9cff49ff612f7ce0578bced9d0b38325 (patch) | |
tree | bdd2a6b7f35695b1d7ab1209efbb40187501fe7d /security/keys/compat.c | |
parent | Merge tag 'keys-namespace-20190627' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
parent | keys: Provide KEYCTL_GRANT_PERMISSION (diff) | |
download | linux-0f75ef6a9cff49ff612f7ce0578bced9d0b38325.tar.xz linux-0f75ef6a9cff49ff612f7ce0578bced9d0b38325.zip |
Merge tag 'keys-acl-20190703' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull keyring ACL support from David Howells:
"This changes the permissions model used by keys and keyrings to be
based on an internal ACL by the following means:
- Replace the permissions mask internally with an ACL that contains a
list of ACEs, each with a specific subject with a permissions mask.
Potted default ACLs are available for new keys and keyrings.
ACE subjects can be macroised to indicate the UID and GID specified
on the key (which remain). Future commits will be able to add
additional subject types, such as specific UIDs or domain
tags/namespaces.
Also split a number of permissions to give finer control. Examples
include splitting the revocation permit from the change-attributes
permit, thereby allowing someone to be granted permission to revoke
a key without allowing them to change the owner; also the ability
to join a keyring is split from the ability to link to it, thereby
stopping a process accessing a keyring by joining it and thus
acquiring use of possessor permits.
- Provide a keyctl to allow the granting or denial of one or more
permits to a specific subject. Direct access to the ACL is not
granted, and the ACL cannot be viewed"
* tag 'keys-acl-20190703' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
keys: Provide KEYCTL_GRANT_PERMISSION
keys: Replace uid/gid/perm permissions checking with an ACL
Diffstat (limited to 'security/keys/compat.c')
-rw-r--r-- | security/keys/compat.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/security/keys/compat.c b/security/keys/compat.c index 9bcc404131aa..b0e59546e7bd 100644 --- a/security/keys/compat.c +++ b/security/keys/compat.c @@ -157,6 +157,8 @@ COMPAT_SYSCALL_DEFINE5(keyctl, u32, option, case KEYCTL_MOVE: return keyctl_keyring_move(arg2, arg3, arg4, arg5); + case KEYCTL_GRANT_PERMISSION: + return keyctl_grant_permission(arg2, arg3, arg4, arg5); case KEYCTL_CAPABILITIES: return keyctl_capabilities(compat_ptr(arg2), arg3); |