From addf1509244f28f1a9f90fbff3e99b9d0e544982 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Love=20H=C3=B6rnquist=20=C3=85strand?= <lha@kth.se>
Date: Sun, 2 Oct 2005 03:17:06 +0000
Subject: [PATCH] Mac OS X 10.4 needs a runtime check if we are going to use
 the syscall, there is no cpp define to use to check the version.  Every after
 10.0 (darwin 8.0) uses the /dev/ version of the pioctl.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16117 ec53bebd-3082-4978-b11e-865c3cabbd6b
---
 lib/kafs/afssys.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/lib/kafs/afssys.c b/lib/kafs/afssys.c
index 151d4eabf..9b1e85a98 100644
--- a/lib/kafs/afssys.c
+++ b/lib/kafs/afssys.c
@@ -410,6 +410,38 @@ k_hasafs(void)
 	    goto done;
     }
 
+#ifdef __APPLE__
+    /*
+     * Darwin needs runtime check if we want to use the syscall
+     */
+    do {
+	int version;
+	int mib[2];
+	size_t len;
+	char *kernelVersion;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_OSRELEASE;
+
+	if (sysctl(mib, 2, NULL, &len, NULL, 0))
+	    break;
+	kernelVersion = malloc(len);
+	if (kernelVersion == NULL)
+	    break;
+	if (sysctl(mib, 2, kernelVersion, &len, NULL, 0)) {
+	    free(kernelVersion);
+	    break;
+	}
+
+	version = atoi(kernelVersion);
+	free(kernelVersion);
+	if (version >= 8)
+	    goto skip_syscall;
+
+    } while(0);
+#endif
+
+
 #if defined(AFS_SYSCALL) || defined(AFS_SYSCALL2) || defined(AFS_SYSCALL3)
     {
 	int tmp;
@@ -491,6 +523,10 @@ k_hasafs(void)
 	goto done;
 #endif
 
+#ifdef __APPLE__
+ skip_syscall:
+#endif
+
     if (try_ioctlpath("/proc/fs/openafs/afs_ioctl", LINUX_PROC_POINT) == 0)
 	goto done;
     if (try_ioctlpath("/proc/fs/nnpfs/afs_ioctl", LINUX_PROC_POINT) == 0)