[src/trunk]: src/sys/compat/netbsd32 compat_10 fix: open(NULL) == open(".");

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

details:   https://anonhg.NetBSD.org/src/rev/120211550bb3
branches:  trunk
changeset: 793038:120211550bb3
user:      christos <christos%NetBSD.org@localhost>
date:      Sat Jan 25 02:27:41 2014 +0000

description:
compat_10 fix: open(NULL) == open(".");

diffstat:

 sys/compat/netbsd32/netbsd32_netbsd.c |  37 +++++++++++++++++++++++++++++++---
 1 files changed, 33 insertions(+), 4 deletions(-)

diffs (79 lines):

diff -r 052bf29955d8 -r 120211550bb3 sys/compat/netbsd32/netbsd32_netbsd.c
--- a/sys/compat/netbsd32/netbsd32_netbsd.c     Sat Jan 25 00:59:44 2014 +0000
+++ b/sys/compat/netbsd32/netbsd32_netbsd.c     Sat Jan 25 02:27:41 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: netbsd32_netbsd.c,v 1.181 2013/07/18 13:43:32 matt Exp $       */
+/*     $NetBSD: netbsd32_netbsd.c,v 1.182 2014/01/25 02:27:41 christos Exp $   */
 
 /*
  * Copyright (c) 1998, 2001, 2008 Matthew R. Green
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: netbsd32_netbsd.c,v 1.181 2013/07/18 13:43:32 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: netbsd32_netbsd.c,v 1.182 2014/01/25 02:27:41 christos Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_ddb.h"
@@ -54,6 +54,7 @@
 #include <sys/sockio.h>
 #include <sys/socketvar.h>
 #include <sys/mbuf.h>
+#include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/signalvar.h>
@@ -227,12 +228,25 @@
                syscallarg(mode_t) mode;
        } */
        struct sys_open_args ua;
+       struct pathbuf *pb;
+       int error, fd;
 
        NETBSD32TOP_UAP(path, const char);
        NETBSD32TO64_UAP(flags);
        NETBSD32TO64_UAP(mode);
-
-       return (sys_open(l, &ua, retval));
+        
+       if (SCARG(&ua, path) != NULL) {
+               error = pathbuf_copyin(SCARG(&ua, path), &pb);
+               if (error) 
+                       return error; 
+       } else
+               pb = pathbuf_create(".");
+                
+        error = do_open(l, NULL, pb, SCARG(&ua, flags), SCARG(&ua, mode), &fd);
+        pathbuf_destroy(pb);
+       if (error == 0)
+               *retval = fd;
+        return error;
 }
 
 int
@@ -1509,9 +1523,24 @@
        NETBSD32TOX_UAP(len, size_t);
        NETBSD32TO64_UAP(prot);
        NETBSD32TO64_UAP(flags);
+#ifdef __x86_64__
+       /*
+        * Ancient kernel on x86 did not obey PROT_EXEC on i386 at least
+        * and ld.so did not turn it on!
+        */
+       if (SCARG(&ua, flags) & MAP_COPY)
+               SCARG(&ua, prot) |= PROT_EXEC;
+#endif
        NETBSD32TO64_UAP(fd);
        NETBSD32TOX_UAP(PAD, long);
        NETBSD32TOX_UAP(pos, off_t);
+printf("mmap(addr=0x%lx, len=0x%lx, prot=0x%lx, flags=0x%lx, fd=%ld, pos=0x%lx);\n",
+       (long)SCARG(&ua, addr),
+       (long)SCARG(&ua, len),
+       (long)SCARG(&ua, prot),
+       (long)SCARG(&ua, flags),
+       (long)SCARG(&ua, fd),
+       (long)SCARG(&ua, pos));
        error = sys_mmap(l, &ua, retval);
        if ((u_long)*retval > (u_long)UINT_MAX) {
                printf("netbsd32_mmap: retval out of range: 0x%lx",