From 335a418a2063d66164de02031b50258cceb4ea7c Mon Sep 17 00:00:00 2001
From: =?utf8?q?Arsen=20Arsenovi=C4=87?= <arsen@aarsen.me>
Date: Sun, 24 Jan 2021 16:44:13 +0100
Subject: [PATCH] jack: use program_invocation_short_name
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Fixes: https://github.com/alsa-project/alsa-plugins/pull/18
Signed-off-by: Arsen Arsenović <arsen@aarsen.me>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
 jack/pcm_jack.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/jack/pcm_jack.c b/jack/pcm_jack.c
index 9aa051a..f266a35 100644
--- a/jack/pcm_jack.c
+++ b/jack/pcm_jack.c
@@ -20,7 +20,9 @@
  *
  */
 
+#define _GNU_SOURCE
 #include <stdbool.h>
+#include <errno.h>
 #include <byteswap.h>
 #include <sys/shm.h>
 #include <sys/types.h>
@@ -600,12 +602,16 @@ static int snd_pcm_jack_open(snd_pcm_t **pcmp, const char *name,
 		return -EINVAL;
 	}
 
-	if (client_name == NULL)
+	if (client_name == NULL) {
+		const char *pname = program_invocation_short_name;
+		if (!pname[0]) {
+			pname = "alsa-jack";
+		}
 		err = snprintf(jack_client_name, sizeof(jack_client_name),
-			       "alsa-jack.%s%s.%d.%d", name,
+			       "%s.%s.%d.%d", pname,
 			       stream == SND_PCM_STREAM_PLAYBACK ? "P" : "C",
 			       getpid(), num++);
-	else
+	} else
 		err = snprintf(jack_client_name, sizeof(jack_client_name),
 			       "%s", client_name);
 
-- 
2.47.1