Re: [PATCH v2] audit: allow not equal op for audit by executable

From: Ondrej Mosnáček <omosnace(a)redhat.com&gt; Current implementation of auditing by executable name only implements the 'equal' operator. This patch extends it to also support the 'not equal' operator. See: https://github.com/linux-audit/audit-kernel/issues/53 Signed-off-by: Ondrej Mosnacek <omosnace(a)redhat.com&gt;

--- kernel/auditfilter.c | 2 +- kernel/auditsc.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index d7a807e81451..a0c5a3ec6e60 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c @@ -426,7 +426,7 @@ static int audit_field_valid(struct audit_entry *entry, struct audit_field *f) return -EINVAL; break; case AUDIT_EXE: - if (f->op != Audit_equal) + if (f->op != Audit_not_equal && f->op != Audit_equal) return -EINVAL; if (entry->rule.listnr != AUDIT_FILTER_EXIT) return -EINVAL; diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 4e0a4ac803db..479c031ec54c 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -471,6 +471,8 @@ static int audit_filter_rules(struct task_struct *tsk, break; case AUDIT_EXE: result = audit_exe_compare(tsk, rule->exe); + if (f->op == Audit_not_equal) + result = !result; break; case AUDIT_UID: result = audit_uid_comparator(cred->uid, f->op, f->uid); -- 2.14.3