From: David CARLIER <devnexen@gmail.com>
Date: Sun, 20 Feb 2022 16:28:58 +0000 (+0000)
Subject: Sys_FindExecutableName FreeBSD fix.
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=refs%2Fmerge-requests%2F128%2Fhead;p=xonotic%2Fdarkplaces.git

Sys_FindExecutableName FreeBSD fix.

Retrieving the path via native API rather than the optional presence
of the procfs support.
---

diff --git a/sys_shared.c b/sys_shared.c
index f1c0d60c..b8b26917 100644
--- a/sys_shared.c
+++ b/sys_shared.c
@@ -24,6 +24,9 @@
 # ifdef SUPPORTDLL
 #  include <dlfcn.h>
 # endif
+# ifdef __FreeBSD__
+#  include <sys/sysctl.h>
+# endif
 #endif
 
 static char sys_timestring[128];
@@ -493,7 +496,10 @@ static const char *Sys_FindExecutableName(void)
 	static char exenamebuf[MAX_OSPATH+1];
 	ssize_t n = -1;
 #if defined(__FreeBSD__)
-	n = readlink("/proc/curproc/file", exenamebuf, sizeof(exenamebuf)-1);
+	size_t l = sizeof(exenamebuf);
+	int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
+	if (sysctl(mib, 4, exenamebuf, &l, NULL, 0) == 0)
+		n = (ssize_t)l;
 #elif defined(__linux__)
 	n = readlink("/proc/self/exe", exenamebuf, sizeof(exenamebuf)-1);
 #endif