aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/keys.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/keys.txt')
-rw-r--r--Documentation/keys.txt27
1 files changed, 16 insertions, 11 deletions
diff --git a/Documentation/keys.txt b/Documentation/keys.txt
index 70e83cf664ae..61c0fad2fe2f 100644
--- a/Documentation/keys.txt
+++ b/Documentation/keys.txt
@@ -241,25 +241,30 @@ The security class "key" has been added to SELinux so that mandatory access
241controls can be applied to keys created within various contexts. This support 241controls can be applied to keys created within various contexts. This support
242is preliminary, and is likely to change quite significantly in the near future. 242is preliminary, and is likely to change quite significantly in the near future.
243Currently, all of the basic permissions explained above are provided in SELinux 243Currently, all of the basic permissions explained above are provided in SELinux
244as well; SE Linux is simply invoked after all basic permission checks have been 244as well; SELinux is simply invoked after all basic permission checks have been
245performed. 245performed.
246 246
247Each key is labeled with the same context as the task to which it belongs. 247The value of the file /proc/self/attr/keycreate influences the labeling of
248Typically, this is the same task that was running when the key was created. 248newly-created keys. If the contents of that file correspond to an SELinux
249The default keyrings are handled differently, but in a way that is very 249security context, then the key will be assigned that context. Otherwise, the
250intuitive: 250key will be assigned the current context of the task that invoked the key
251creation request. Tasks must be granted explicit permission to assign a
252particular context to newly-created keys, using the "create" permission in the
253key security class.
251 254
252 (*) The user and user session keyrings that are created when the user logs in 255The default keyrings associated with users will be labeled with the default
253 are currently labeled with the context of the login manager. 256context of the user if and only if the login programs have been instrumented to
254 257properly initialize keycreate during the login process. Otherwise, they will
255 (*) The keyrings associated with new threads are each labeled with the context 258be labeled with the context of the login program itself.
256 of their associated thread, and both session and process keyrings are
257 handled similarly.
258 259
259Note, however, that the default keyrings associated with the root user are 260Note, however, that the default keyrings associated with the root user are
260labeled with the default kernel context, since they are created early in the 261labeled with the default kernel context, since they are created early in the
261boot process, before root has a chance to log in. 262boot process, before root has a chance to log in.
262 263
264The keyrings associated with new threads are each labeled with the context of
265their associated thread, and both session and process keyrings are handled
266similarly.
267
263 268
264================ 269================
265NEW PROCFS FILES 270NEW PROCFS FILES