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Commit efaffd6e authored by Eric Paris's avatar Eric Paris Committed by Al Viro
Browse files

audit: allow matching on obj_uid 



Allow syscall exit filter matching based on the uid of the owner of an
inode used in a syscall.  aka:

auditctl -a always,exit -S open -F obj_uid=0 -F perm=wa

Signed-off-by: default avatarEric Paris <eparis@redhat.com>
parent 6422e78d

include/linux/audit.h

+1 −0
Original line number Diff line number Diff line
@@ -223,6 +223,7 @@ 
#define AUDIT_PERM	106

#define AUDIT_DIR	107

#define AUDIT_FILETYPE	108

#define AUDIT_OBJ_UID	109



#define AUDIT_ARG0      200

#define AUDIT_ARG1      (AUDIT_ARG0+1)

kernel/auditfilter.c

+1 −0
Original line number Diff line number Diff line
@@ -461,6 +461,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data, 
		case AUDIT_ARG1:

		case AUDIT_ARG2:

		case AUDIT_ARG3:

		case AUDIT_OBJ_UID:

			break;

		case AUDIT_ARCH:

			entry->rule.arch_f = f;

kernel/auditsc.c

+12 −0
Original line number Diff line number Diff line
@@ -586,6 +586,18 @@ static int audit_filter_rules(struct task_struct *tsk, 
				}

			}

			break;

		case AUDIT_OBJ_UID:

			if (name) {

				result = audit_comparator(name->uid, f->op, f->val);

			} else if (ctx) {

				list_for_each_entry(n, &ctx->names_list, list) {

					if (audit_comparator(n->uid, f->op, f->val)) {

						++result;

						break;

					}

				}

			}

			break;

		case AUDIT_WATCH:

			if (name)

				result = audit_watch_compare(rule->watch, name->ino, name->dev);