This patch removes the restriction of the AUDIT_EXE field to only
SYSCALL filter and teaches audit_filter to recognize this field.
This makes it possible to write rule lists such as:
auditctl -a exit,always [some general rule]
# Filter out events with executable name /bin/exe1 or /bin/exe2:
auditctl -a exclude,always -F exe=/bin/exe1
auditctl -a exclude,always -F exe=/bin/exe2
See: https://github.com/linux-audit/audit-kernel/issues/54
Signed-off-by: Ondrej Mosnacek <[email protected]>
---
kernel/auditfilter.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index eaa320148d97..6db9847ca031 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -428,8 +428,6 @@ static int audit_field_valid(struct audit_entry *entry,
struct audit_field *f)
case AUDIT_EXE:
if (f->op != Audit_not_equal && f->op != Audit_equal)
return -EINVAL;
- if (entry->rule.listnr != AUDIT_FILTER_EXIT)
- return -EINVAL;
break;
}
return 0;
@@ -1360,6 +1358,11 @@ int audit_filter(int msgtype, unsigned int listtype)
f->type, f->op,
f->lsm_rule, NULL);
}
break;
+ case AUDIT_EXE:
+ result = audit_exe_compare(current,
e->rule.exe);
+ if (f->op == Audit_not_equal)
+ result = !result;
+ break;
default:
goto unlock_and_return;
}
--
2.17.0
--
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