From: Michael Jeanson <mjeanson@efficios.com>
Date: Fri, 6 Nov 2020 19:49:10 +0000 (-0500)
Subject: port: FreeBSD 12.2 added pthread_setname_np
X-Git-Url: http://git.efficios.com/?p=deliverable%2Flttng-ust.git;a=commitdiff_plain;h=bebc0c82b456297ca22c8b9d4744c02170c65894

port: FreeBSD 12.2 added pthread_setname_np

With a minor difference that it doesn't return an error when the name is
too long, add this check in the wrapper to have the same behavior on
all platforms.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: Id6fa0970b011867424a215e5d7ba69e9fe617389
---

diff --git a/liblttng-ust/compat.h b/liblttng-ust/compat.h
index a941b9a1..e1f5f8b3 100644
--- a/liblttng-ust/compat.h
+++ b/liblttng-ust/compat.h
@@ -34,6 +34,14 @@
 static inline
 int lttng_pthread_setname_np(const char *name)
 {
+	/*
+	 * Some implementations don't error out, replicate this behavior for
+	 * consistency.
+	 */
+	if (strnlen(name, LTTNG_UST_ABI_PROCNAME_LEN) >= LTTNG_UST_ABI_PROCNAME_LEN) {
+		return ERANGE;
+	}
+
 	return pthread_setname_np(pthread_self(), name);
 }