[src/trunk]: src/sys/compat/netbsd32 From maxv@:

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

details:   https://anonhg.NetBSD.org/src/rev/6c2765bc79fc
branches:  trunk
changeset: 453635:6c2765bc79fc
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Aug 20 14:26:05 2019 +0000

description:
>From maxv@:

1) In compat_drm_agp_info(), seems like it should be info64to32.
2) In compat_drm_getstats(), the assignments in the loop are inverted, it's
   st32 which should be set to the values of st64, not the other way around.
3) In compat_drm_dma(), again inverted 32<->64, and there is no copyout (?).
4) In compat_drm_agp_enable(), m64 is uninitialized, everything is wrong in
   this function it seems.

diffstat:

 sys/compat/netbsd32/netbsd32_drm.c |  44 +++++++++++++++++++------------------
 1 files changed, 23 insertions(+), 21 deletions(-)

diffs (106 lines):

diff -r 66ba6a1b45bc -r 6c2765bc79fc sys/compat/netbsd32/netbsd32_drm.c
--- a/sys/compat/netbsd32/netbsd32_drm.c        Tue Aug 20 14:12:33 2019 +0000
+++ b/sys/compat/netbsd32/netbsd32_drm.c        Tue Aug 20 14:26:05 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: netbsd32_drm.c,v 1.2 2019/08/20 09:55:49 christos Exp $ */
+/*     $NetBSD: netbsd32_drm.c,v 1.3 2019/08/20 14:26:05 christos Exp $ */
 
 /*
  * Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: netbsd32_drm.c,v 1.2 2019/08/20 09:55:49 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: netbsd32_drm.c,v 1.3 2019/08/20 14:26:05 christos Exp $");
 
 #include <compat/netbsd32/netbsd32.h>
 #include <compat/netbsd32/netbsd32_ioctl.h>
@@ -338,16 +338,18 @@
                return error;
 
        st64.count = st32.count;
+       if (st64.count > __arraycount(st64.data))
+               return EINVAL;
 
        error = drm_ioctl(file, DRM_IOCTL_GET_STATS, &st64);
        if (error)
                return error;
 
-       // XXX: or does that need to be count?
-       for (int i = 0; i < __arraycount(st64.data); ++i) {
-               st64.data[i].value = st32.data[i].value;
-               st64.data[i].type = st32.data[i].type;
+       for (int i = 0; i < st64.count; ++i) {
+               st32.data[i].value = st64.data[i].value;
+               st32.data[i].type = st64.data[i].type;
        }
+       st32.count = st64.count;
 
        return copyout(arg, &st32, sizeof(s32));
 }
@@ -565,15 +567,15 @@
        if ((error = copyin(&d32, arg, sizeof(d32))) != 0)
                return error;
 
-       dma64to32(&d32, &d64);
+       dma32to64(&d64, &d32);
 
        error = drm_ioctl(file, DRM_IOCTL_DMA, &d64);
        if (error)
                return error;
 
-       dma32to64(&d64, &d32);
+       dma64to32(&d32, &d64);
 
-       return 0;
+       return copyout(arg, &d32, sizeof(d32));
 }
 
 //XXX:i commented the below line for later use
@@ -592,7 +594,7 @@
        if ((error = copyin(&m32, arg, sizeof(m32))) != 0)
                return error;
 
-       m32.mode = m64.mode;
+       m64.mode = m32.mode;
 
        return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, &m64);
 }
@@ -612,17 +614,17 @@
 } drm_agp_info32_t;
 
 static void 
-info32to64(struct drm_agp_info *i64, const drm_agp_info32_t *i32)
+info64to32(drm_agp_info32_t *i32, const struct drm_agp_info *i64)
 {
-       i64->agp_version_major = i32->agp_version_major;
-       i64->agp_version_minor = i32->agp_version_minor;
-       i64->mode = i32->mode;
-       i64->aperture_base = i32->aperture_base;
-       i64->aperture_size = i32->aperture_size;
-       i64->memory_allowed = i32->memory_allowed;
-       i64->memory_used = i64->memory_used;
-       i64->id_vendor = i32->id_vendor;
-       i64->id_device = i32->id_device;
+       i32->agp_version_major = i64->agp_version_major;
+       i32->agp_version_minor = i64->agp_version_minor;
+       i32->mode = i64->mode;
+       i32->aperture_base = i64->aperture_base;
+       i32->aperture_size = i64->aperture_size;
+       i32->memory_allowed = i64->memory_allowed;
+       i32->memory_used = i64->memory_used;
+       i32->id_vendor = i64->id_vendor;
+       i32->id_device = i64->id_device;
 }
 
 static int 
@@ -636,7 +638,7 @@
        if (error)
                return error;
        
-       info32to64(&i64,&i32);
+       info64to32(&i32, &i64);
        
        return copyout(arg, &i32, sizeof(i32));