From: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Date: Tue, 29 Mar 2022 20:31:44 +0000 (-0400)
Subject: Fix: compat: 'LTTNG_UST_ABI_PROCNAME_LEN' is undeclared
X-Git-Tag: v2.13.7~9
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=27f2b8400c9db484cd195c4240c379e845b1413d

Fix: compat: 'LTTNG_UST_ABI_PROCNAME_LEN' is undeclared

Observed issue
==============

On old systems, the `lttng_pthread_setname_np` function fallsback to
using the compat prctl version. In that context,
`LTTNG_UST_ABI_PROCNAME_LEN` is indeed not declared.

Solution
========

Use `LTTNG_PTHREAD_NAMELEN`. This mimics what is done in other versions
of `lttng_pthread_setname_np`.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I73956cacd7b1e9400881b17b1cd89db2530d3a00
---

diff --git a/src/common/compat/pthread.h b/src/common/compat/pthread.h
index dd30c8b9b..66e4ad97a 100644
--- a/src/common/compat/pthread.h
+++ b/src/common/compat/pthread.h
@@ -60,7 +60,7 @@ static inline
 int lttng_pthread_setname_np(const char *name)
 {
 	/* Replicate pthread_setname_np's behavior. */
-	if (strnlen(name, LTTNG_UST_ABI_PROCNAME_LEN) >= LTTNG_UST_ABI_PROCNAME_LEN) {
+	if (strnlen(name, LTTNG_PTHREAD_NAMELEN) >= LTTNG_PTHREAD_NAMELEN) {
 		return ERANGE;
 	}
 	return prctl(PR_SET_NAME, name, 0, 0, 0);