https://git.samba.org/?p=pam_wrapper.git;a=commitdiff;h=7bd24b0e54995da5f333575f97c9f1fa796fe0f1

From 7bd24b0e54995da5f333575f97c9f1fa796fe0f1 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jan=20Kundr=C3=A1t?= <jan.kundrat@cesnet.cz>
Date: Mon, 6 Nov 2023 18:34:58 +0100
Subject: [PATCH] die quickly upon mkdir failure
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We just had this failure in our CI system that's currently running just
three PAM-wrapped tests in parallel. Since this is a classic TOCTOU race
(albeit in a test code, and therefore with little to no security
implications), the `mkdir` can fail, and when that happens it's much
better to just die quickly rather than continuing as if nothing
happened.

Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Reviewed-by: Pavel Filipenský <pfilipensky@samba.org>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
--- a/src/pam_wrapper.c
+++ b/src/pam_wrapper.c
@@ -893,6 +893,7 @@ static void pwrap_init(void)
 		PWRAP_LOG(PWRAP_LOG_ERROR,
 			  "Failed to create pam_wrapper config dir: %s - %s",
 			  tmp_config_dir, strerror(errno));
+		exit(1);
 	}
 
 	/* Create file with the PID of the the process */
@@ -1121,6 +1122,7 @@ static void pwrap_init(void)
 		PWRAP_LOG(PWRAP_LOG_ERROR,
 			  "Failed to create pam_wrapper config dir: %s - %s",
 			  tmp_config_dir, strerror(errno));
+		exit(1);
 	}
 
 	/* Create file with the PID of the the process */
-- 
2.34.1