[src/trunk]: src/lib/librumphijack since ln(1) now uses linkat(2) provide a d...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/dfb72165b21c
branches:  trunk
changeset: 354186:dfb72165b21c
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Jun 06 19:48:42 2017 +0000

description:
since ln(1) now uses linkat(2) provide a dumb wrapper.

diffstat:

 lib/librumphijack/hijack.c |  23 +++++++++++++++++++++--
 1 files changed, 21 insertions(+), 2 deletions(-)

diffs (58 lines):

diff -r 0ebf1fb834ac -r dfb72165b21c lib/librumphijack/hijack.c
--- a/lib/librumphijack/hijack.c        Tue Jun 06 18:08:23 2017 +0000
+++ b/lib/librumphijack/hijack.c        Tue Jun 06 19:48:42 2017 +0000
@@ -1,4 +1,4 @@
-/*      $NetBSD: hijack.c,v 1.122 2017/02/16 08:08:01 ozaki-r Exp $    */
+/*      $NetBSD: hijack.c,v 1.123 2017/06/06 19:48:42 christos Exp $   */
 
 /*-
  * Copyright (c) 2011 Antti Kantee.  All Rights Reserved.
@@ -34,7 +34,7 @@
 #include <rump/rumpuser_port.h>
 
 #if !defined(lint)
-__RCSID("$NetBSD: hijack.c,v 1.122 2017/02/16 08:08:01 ozaki-r Exp $");
+__RCSID("$NetBSD: hijack.c,v 1.123 2017/06/06 19:48:42 christos Exp $");
 #endif
 
 #include <sys/param.h>
@@ -163,6 +163,9 @@
 #ifdef HAVE___QUOTACTL
        DUALCALL_QUOTACTL,
 #endif
+#ifdef __NetBSD__
+       DUALCALL_LINKAT,
+#endif
        DUALCALL__NUM
 };
 
@@ -379,6 +382,9 @@
        { DUALCALL_QUOTACTL,    "__quotactl",   RSYS_NAME(__QUOTACTL)   },
 #endif /* HAVE___QUOTACTL */
 
+#ifdef __NetBSD__
+       { DUALCALL_LINKAT,      "linkat",       RSYS_NAME(LINKAT)       },
+#endif
 };
 #undef S
 
@@ -1271,6 +1277,19 @@
        return op(from, to);
 }
 
+#ifdef __NetBSD__
+int
+linkat(int fromfd, const char *from, int tofd, const char *to, int flags)
+{
+       if (fromfd != AT_FDCWD || tofd != AT_FDCWD
+           || flags != AT_SYMLINK_FOLLOW)
+               return ENOSYS;
+
+       return moveish(from, to,
+           GETSYSCALL(rump, LINK), GETSYSCALL(host, LINK));
+}
+#endif
+
 int
 link(const char *from, const char *to)
 {