Blame SOURCES/fapolicyd-unlink-fifo1.patch

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From 8cf74e7f147836e81c3583a046e4dc2b4673a14c Mon Sep 17 00:00:00 2001
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From: Radovan Sroka <rsroka@redhat.com>
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Date: Thu, 11 Mar 2021 14:45:50 +0100
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Subject: [PATCH] Ensure that fifo will be removed after termination
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- unlink_fifo() will be called after every succesful termination
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because dnf/yum can hang if the pipe exists after daemon termination
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- move preconstruct_fifo() out of the scope because it is needed also
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when the daemon is configured to run as root
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Signed-off-by: Radovan Sroka <rsroka@redhat.com>
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---
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 src/daemon/fapolicyd.c | 13 +++++++++++--
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 1 file changed, 11 insertions(+), 2 deletions(-)
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diff --git a/src/daemon/fapolicyd.c b/src/daemon/fapolicyd.c
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index 5dce666..c29611c 100644
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--- a/src/daemon/fapolicyd.c
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+++ b/src/daemon/fapolicyd.c
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@@ -446,6 +446,17 @@ int main(int argc, const char *argv[])
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 		openlog("fapolicyd", LOG_PID, LOG_DAEMON);
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 	}
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+	// Set the exit function so there is always a fifo cleanup
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+	if (atexit(unlink_fifo)) {
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+		msg(LOG_ERR, "Cannot set exit function");
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+		exit(1);
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+	}
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+
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+	if (preconstruct_fifo(&config)) {
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+		msg(LOG_ERR, "Cannot contruct a pipe");
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+		exit(1);
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+	}
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+
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 	// Setup filesystem to watch list
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 	init_fs_list(config.watch_fs);
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@@ -454,8 +465,6 @@ int main(int argc, const char *argv[])
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 	// If we are not going to be root, then setup necessary capabilities
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 	if (config.uid != 0) {
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-		if (preconstruct_fifo(&config))
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-			exit(1);
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 		capng_clear(CAPNG_SELECT_BOTH);
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 		capng_updatev(CAPNG_ADD, CAPNG_EFFECTIVE|CAPNG_PERMITTED,
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 			CAP_DAC_OVERRIDE, CAP_SYS_ADMIN, CAP_SYS_PTRACE,
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-- 
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2.26.2
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