audit: add filtering for io_uring records

This patch adds basic audit io_uring filtering, using as much of the
existing audit filtering infrastructure as possible.  In order to do
this we reuse the audit filter rule's syscall mask for the io_uring
operation and we create a new filter for io_uring operations as
AUDIT_FILTER_URING_EXIT/audit_filter_list[7].

Thanks to Richard Guy Briggs for his review, feedback, and work on
the corresponding audit userspace changes.

Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Paul Moore
2021-04-18 21:54:47 -04:00
parent 5bd2182d58
commit 67daf270ce
5 changed files with 64 additions and 20 deletions

View File

@@ -726,7 +726,8 @@ int audit_make_tree(struct audit_krule *rule, char *pathname, u32 op)
{
if (pathname[0] != '/' ||
rule->listnr != AUDIT_FILTER_EXIT ||
(rule->listnr != AUDIT_FILTER_EXIT &&
rule->listnr != AUDIT_FILTER_URING_EXIT) ||
op != Audit_equal ||
rule->inode_f || rule->watch || rule->tree)
return -EINVAL;