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| author | Mat Martineau <mathew.j.martineau@linux.intel.com> | 2016-05-07 00:38:17 +0200 |
|---|---|---|
| committer | Mat Martineau <mathew.j.martineau@linux.intel.com> | 2017-04-04 23:10:11 +0200 |
| commit | efba797b977c99bc6e0c301299272c80fb8b287f (patch) | |
| tree | 746410c0909fee9a126c418df1dd51b85a3a94ec /Documentation/security | |
| parent | KEYS: Use structure to capture key restriction function and data (diff) | |
| download | linux-efba797b977c99bc6e0c301299272c80fb8b287f.tar.xz linux-efba797b977c99bc6e0c301299272c80fb8b287f.zip | |
KEYS: Add an optional lookup_restriction hook to key_type
The restrict_link functions used to validate keys as they are linked
to a keyring can be associated with specific key types. Each key type
may be loaded (or not) at runtime, so lookup of restrict_link
functions needs to be part of the key type implementation to ensure
that the requested keys can be examined.
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Diffstat (limited to 'Documentation/security')
| -rw-r--r-- | Documentation/security/keys.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/security/keys.txt b/Documentation/security/keys.txt index e35de987fc48..5fe04a7cc03d 100644 --- a/Documentation/security/keys.txt +++ b/Documentation/security/keys.txt @@ -1445,6 +1445,15 @@ The structure has a number of fields, some of which are mandatory: The authorisation key. + (*) struct key_restriction *(*lookup_restriction)(const char *params); + + This optional method is used to enable userspace configuration of keyring + restrictions. The restriction parameter string (not including the key type + name) is passed in, and this method returns a pointer to a key_restriction + structure containing the relevant functions and data to evaluate each + attempted key link operation. If there is no match, -EINVAL is returned. + + ============================ REQUEST-KEY CALLBACK SERVICE ============================ |