From 88d9984e165ae71eabecdffd3eb7637adadf822f Mon Sep 17 00:00:00 2001
From: Lubos Dolezel <lubos@dolezel.info>
Date: Thu, 24 Nov 2016 22:26:39 +0100
Subject: [PATCH] Support setting thread name via sys_proc_info()

---
 src/kernel/emulation/linux/misc/proc_info.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/kernel/emulation/linux/misc/proc_info.c b/src/kernel/emulation/linux/misc/proc_info.c
index 81f5c2a45..8428b0599 100644
--- a/src/kernel/emulation/linux/misc/proc_info.c
+++ b/src/kernel/emulation/linux/misc/proc_info.c
@@ -6,6 +6,8 @@
 #include "../ext/syslog.h"
 #include "../simple.h"
 
+#define LINUX_PR_SET_NAME 15
+
 long sys_proc_info(uint32_t callnum, int32_t pid, uint32_t flavor,
 		uint64_t arg, void* buffer, int32_t bufsize)
 {
@@ -22,6 +24,19 @@ long sys_proc_info(uint32_t callnum, int32_t pid, uint32_t flavor,
 
 			return ret;
 		}
+		case 5: // proc_setthreadname
+		{
+			// On macOS, pthread_setname_np() takes only one argument,
+			// thus we can ignore pid and assume we're talking about
+			// the current thread.
+			int ret;
+			
+			ret = LINUX_SYSCALL(__NR_prctl, LINUX_PR_SET_NAME, buffer, 0UL, 0UL, 0UL);
+			if (ret < 0)
+				return errno_linux_to_bsd(ret);
+
+			return ret;
+		}
 		case 1: // proc_listpids
 		case 2: // proc_pidinfo
 		case 3: // proc_pidfdinfo
-- 
2.51.2