firstboot: get rid of firstboot generator again, introduce ConditionFirstBoot= instead

As Zbigniew pointed out a new ConditionFirstBoot= appears like the nicer
way to hook in systemd-firstboot.service on first boots (those with /etc
unpopulated), so let's do this, and get rid of the generator again.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/core/condition.c b/src/core/condition.c
index 410fb36797..353e0c97f1 100644
--- a/src/core/condition.c
+++ b/src/core/condition.c
@@ -120,6 +120,20 @@ static bool condition_test_needs_update(Condition *c) {
                 (usr.st_mtim.tv_sec == other.st_mtim.tv_sec && usr.st_mtim.tv_nsec > other.st_mtim.tv_nsec)) == !c->negate;
 }
 
+static bool condition_test_first_boot(Condition *c) {
+        int r;
+
+        assert(c);
+        assert(c->parameter);
+        assert(c->type == CONDITION_FIRST_BOOT);
+
+        r = parse_boolean(c->parameter);
+        if (r < 0)
+                return c->negate;
+
+        return ((access("/run/systemd/first-boot", F_OK) >= 0) == !!r) == !c->negate;
+}
+
 static bool condition_test(Condition *c) {
         assert(c);
 
@@ -202,6 +216,9 @@ static bool condition_test(Condition *c) {
         case CONDITION_NEEDS_UPDATE:
                 return condition_test_needs_update(c);
 
+        case CONDITION_FIRST_BOOT:
+                return condition_test_first_boot(c);
+
         case CONDITION_NULL:
                 return !c->negate;