From e6e58c96802d6611c9b4f25025a800dd4e0b75a3 Mon Sep 17 00:00:00 2001
From: noneofyourbusiness <noneofyourbusiness@localhost>
Date: Mon, 26 Sep 2022 12:07:43 +0200
Subject: libbus.c: handle fopen() errors in bus_open

---
 libbus.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'libbus.c')

diff --git a/libbus.c b/libbus.c
index 5abb4e5..b691940 100644
--- a/libbus.c
+++ b/libbus.c
@@ -670,6 +670,10 @@ bus_open(bus_t *restrict bus, const char *restrict file, int flags)
 
 	f = fopen(file, "r");
 
+	if (f == NULL) {
+		goto fail;
+	}
+
 	t(getline(&line, &len, f));
 	t(bus->key_sem = (key_t)atoll(line));
 	free(line), line = NULL, len = 0;
@@ -684,6 +688,7 @@ bus_open(bus_t *restrict bus, const char *restrict file, int flags)
 		t(open_semaphores(bus));
 		t(open_shared_memory(bus, flags));
 	}
+
 	return 0;
 fail:
 	saved_errno = errno;
-- 
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