acl: libudev currently doesn't handle properly enumerator matches with multiple tags, so avoid using them for now

TODO

@@ -22,6 +22,9 @@ F15 External:
 * fix broken Sockets=syslog-ng.socket packaging
 
 Features:
+
+* understand https://bugzilla.redhat.com/show_bug.cgi?id=672194
+
 * possibly set timezone offset from systemd at init instead
   of calling hwclock
 

src/logind-acl.c

@@ -222,7 +222,7 @@ int devnode_acl_all(struct udev *udev,
 
         assert(udev);
 
-        if (!seat)
+        if (isempty(seat))
                 seat = "seat0";
 
         e = udev_enumerate_new(udev);
@@ -233,11 +233,13 @@ int devnode_acl_all(struct udev *udev,
         if (r < 0)
                 goto finish;
 
-        if (!streq(seat, "seat0")) {
-                r = udev_enumerate_add_match_tag(e, seat);
-                if (r < 0)
-                        goto finish;
-        }
+        /* FIXME: when libudev is able to handle multiple match tags
+         * properly, optimize the search here a bit */
+        /* if (!streq(seat, "seat0")) { */
+        /*         r = udev_enumerate_add_match_tag(e, seat); */
+        /*         if (r < 0) */
+        /*                 goto finish; */
+        /* } */
 
         r = udev_enumerate_scan_devices(e);
         if (r < 0)
@@ -254,8 +256,8 @@ int devnode_acl_all(struct udev *udev,
                         goto finish;
                 }
 
-                sn = udev_device_get_property_value(d, "SEAT");
-                if (!sn)
+                sn = udev_device_get_property_value(d, "ID_SEAT");
+                if (isempty(sn))
                         sn = "seat0";
 
                 if (!streq(seat, sn)) {
@@ -270,6 +272,8 @@ int devnode_acl_all(struct udev *udev,
                         goto finish;
                 }
 
+                log_debug("Fixing up %s for seat %s...", node, sn);
+
                 r = devnode_acl(node, flush, del, old_uid, add, new_uid);
                 udev_device_unref(d);
 

src/logind.c

@@ -286,7 +286,7 @@ int manager_process_seat_device(Manager *m, struct udev_device *d) {
                 Seat *seat;
 
                 sn = udev_device_get_property_value(d, "ID_SEAT");
-                if (!sn)
+                if (isempty(sn))
                         sn = "seat0";
 
                 if (!seat_name_is_valid(sn)) {

src/logind.h

@@ -45,6 +45,7 @@
  * trigger based on libudev if available
  * enumerate recursively with libudev when triggering
  * use sysfs in device hash table, not sysname, when fb driver is fixed
+ * fix ACL enumeration as soon as libudev can properly handle two match tags when enumerating
  *
  * non-local X11 server
  * reboot/shutdown halt management

src/uaccess.c

@@ -44,7 +44,7 @@ int main(int argc, char *argv[]) {
         }
 
         path = argv[1];
-        seat = argc >= 3 ? argv[2] : "seat0";
+        seat = argc < 3 || isempty(argv[2]) ? "seat0" : argv[2];
 
         p = strappend("/run/systemd/seats/", seat);
         if (!p) {