From b5437a42f9950d7f56d7c199521929e7d93df287 Mon Sep 17 00:00:00 2001
From: "C. McEnroe" <june@causal.agency>
Date: Sun, 26 Sep 2021 18:11:38 -0400
Subject: [PATCH] Allocate pollfd array rather than using a VLA

---
 daemon.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/daemon.c b/daemon.c
index efeaf22..e4c3145 100644
--- a/daemon.c
+++ b/daemon.c
@@ -312,6 +312,14 @@ int main(int argc, char *argv[]) {
 	}
 	setTitle();
 
+	struct pollfd *fds = calloc(1 + 2 * services.len, sizeof(*fds));
+	if (!fds) {
+		syslog(LOG_ERR, "calloc: %m");
+		goto shutdown;
+	}
+	fds[0].fd = fifo;
+	fds[0].events = POLLIN;
+
 	sigset_t mask;
 	sigemptyset(&mask);
 	for (;;) {
@@ -331,6 +339,11 @@ int main(int argc, char *argv[]) {
 		}
 		if (signals[SIGHUP]) {
 			parseConfig(configPath);
+			fds = reallocarray(fds, 1 + 2 * services.len, sizeof(*fds));
+			if (!fds) {
+				syslog(LOG_ERR, "reallocarray: %m");
+				goto shutdown;
+			}
 			setTitle();
 			signals[SIGHUP] = 0;
 		}
@@ -340,10 +353,6 @@ int main(int argc, char *argv[]) {
 			signals[SIGINFO] = 0;
 		}
 
-		struct pollfd fds[1 + 2 * services.len];
-		fds[0].fd = fifo;
-		fds[0].events = POLLIN;
-
 		struct timespec deadline = {0};
 		for (size_t i = 0; i < services.len; ++i) {
 			struct Service *service = &services.ptr[i];
@@ -414,6 +423,7 @@ int main(int argc, char *argv[]) {
 		}
 	}
 
+shutdown:
 	close(fifo);
 	unlink(fifoPath);