xnu-1699.32.7.tar.gz

[apple/xnu.git] / bsd / kern / mach_fat.c

diff --git a/bsd/kern/mach_fat.c b/bsd/kern/mach_fat.c
index 7c9baaeec92c70c7283bc28d6ab61ec920472c22..9811047d7500d8b9c5edc6ef159e5ae8a72dee5f 100644 (file)
--- a/bsd/kern/mach_fat.c
+++ b/bsd/kern/mach_fat.c
@@ -1,33 +1,30 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1991-2005 Apple Computer, Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 

- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER

  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.

  * 
  * 

- * @APPLE_LICENSE_HEADER_END@
- */
-/* Copyright (c) 1991 NeXT Computer, Inc.  All rights reserved.
- *
- *     File:   kern/mach_fat.c
- *     Author: Peter King
- *
- *     Fat file support routines.
- *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
  */

-

 #include <sys/param.h>
 #include <sys/types.h>
 #include <sys/uio.h>
 #include <sys/param.h>
 #include <sys/types.h>
 #include <sys/uio.h>


@@ -38,6 +35,7 @@
 #include <kern/cpu_number.h>
 #include <mach-o/fat.h>
 #include <kern/mach_loader.h>
 #include <kern/cpu_number.h>
 #include <mach-o/fat.h>
 #include <kern/mach_loader.h>

+#include <kern/mach_fat.h>

 #include <libkern/OSByteOrder.h>
 #include <machine/exec.h>
 
 #include <libkern/OSByteOrder.h>
 #include <machine/exec.h>
 


@@ -79,7 +77,9 @@ fatfile_getarch2(
        int                     grade;
        int                     best_grade;
        int                     nfat_arch;
        int                     grade;
        int                     best_grade;
        int                     nfat_arch;

-       int                     end_of_archs;
+       off_t                   end_of_archs;
+       cpu_type_t              testtype;
+       cpu_type_t              testsubtype;

        struct fat_header       *header;
 #if 0
        off_t filesize;
        struct fat_header       *header;
 #if 0
        off_t filesize;


@@ -97,8 +97,8 @@ fatfile_getarch2(
         */
        nfat_arch = OSSwapBigToHostInt32(header->nfat_arch);
 
         */
        nfat_arch = OSSwapBigToHostInt32(header->nfat_arch);
 

-       end_of_archs = sizeof(struct fat_header)
-               + nfat_arch * sizeof(struct fat_arch);
+       end_of_archs = (off_t)nfat_arch * sizeof(struct fat_arch) +
+                       sizeof(struct fat_header);

 #if 0
        filesize = ubc_getsize(vp);
        if (end_of_archs > (int)filesize) {
 #if 0
        filesize = ubc_getsize(vp);
        if (end_of_archs > (int)filesize) {


@@ -106,38 +106,57 @@ fatfile_getarch2(
        }
 #endif
 
        }
 #endif
 

-       /* This is beacuse we are reading only 512 bytes */
-
-       if (end_of_archs > 512)
+       /*
+        * This check is limited on the top end because we are reading
+        * only PAGE_SIZE bytes
+        */
+       if (end_of_archs > PAGE_SIZE ||
+           end_of_archs < (off_t)(sizeof(struct fat_header)+sizeof(struct fat_arch)))

                return(LOAD_BADMACHO);
                return(LOAD_BADMACHO);

+

        /*
         *      Round size of fat_arch structures up to page boundry.
         */
        /*
         *      Round size of fat_arch structures up to page boundry.
         */

-       size = round_page_32(end_of_archs);
+       size = round_page(end_of_archs);

        if (size == 0)
                return(LOAD_BADMACHO);
 
        /*
        if (size == 0)
                return(LOAD_BADMACHO);
 
        /*

-        * Scan the fat_arch's looking for the best one.
+        * Ignore LIB64 flag so that binary slices with the flag set
+        * don't choke in grade_binary.

         */
         */

+       mask_bits |= CPU_SUBTYPE_LIB64;
+
+       /*
+        * Scan the fat_arch's looking for the best one.  */

        addr = data_ptr;
        best_arch = NULL;
        best_grade = 0;
        arch = (struct fat_arch *) (addr + sizeof(struct fat_header));
        for (; nfat_arch-- > 0; arch++) {
 
        addr = data_ptr;
        best_arch = NULL;
        best_grade = 0;
        arch = (struct fat_arch *) (addr + sizeof(struct fat_header));
        for (; nfat_arch-- > 0; arch++) {
 

+               /* 
+                *      Collect flags from both cputype and cpusubtype 
+                */
+               testtype = OSSwapBigToHostInt32(arch->cputype) |
+                               (OSSwapBigToHostInt32(arch->cpusubtype) & 
+                                       CPU_SUBTYPE_MASK);
+               testsubtype = OSSwapBigToHostInt32(arch->cpusubtype) 
+                       & ~CPU_SUBTYPE_MASK;
+

                /*
                 *      Check to see if right cpu type.
                 */
                /*
                 *      Check to see if right cpu type.
                 */

-               if(((cpu_type_t)OSSwapBigToHostInt32(arch->cputype) & ~mask_bits) != req_cpu_type)
+               if((testtype & ~mask_bits) != req_cpu_type) {

                        continue;
                        continue;

+               }

 
                /*
 
                /*

-                *      Get the grade of the cpu subtype.
+                *      Get the grade of the cpu subtype (without feature flags)

                 */
                 */

-               grade = grade_binary(
-                           OSSwapBigToHostInt32(arch->cputype),
-                           OSSwapBigToHostInt32(arch->cpusubtype));
+               grade = grade_binary(
+                               (testtype & ~CPU_SUBTYPE_LIB64), 
+                               testsubtype);

 
                /*
                 *      Remember it if it's the best we've seen.
 
                /*
                 *      Remember it if it's the best we've seen.


@@ -193,13 +212,14 @@ fatfile_getarch_affinity(
                                fallback_type = CPU_TYPE_POWERPC;
                }
                /*
                                fallback_type = CPU_TYPE_POWERPC;
                }
                /*

-                * Ignore the architectural bits when determining if an image
+                * Ignore all architectural bits when determining if an image

                 * in a fat file should be skipped or graded.
                 */
                 * in a fat file should be skipped or graded.
                 */

-               lret = fatfile_getarch2(vp, data_ptr, primary_type, CPU_ARCH_MASK, archret);
+               lret = fatfile_getarch2(vp, data_ptr, primary_type, 
+                               CPU_ARCH_MASK, archret);

                if ((lret != 0) && handler) {
                        lret = fatfile_getarch2(vp, data_ptr, fallback_type,
                if ((lret != 0) && handler) {
                        lret = fatfile_getarch2(vp, data_ptr, fallback_type,

-                                               0, archret);
+                                               CPU_SUBTYPE_LIB64, archret);

                }
                return lret;
 }
                }
                return lret;
 }


@@ -224,7 +244,8 @@ fatfile_getarch(
        vm_offset_t     data_ptr,
        struct fat_arch         *archret)
 {
        vm_offset_t     data_ptr,
        struct fat_arch         *archret)
 {

-       return fatfile_getarch2(vp, data_ptr, cpu_type(), 0, archret);
+       return fatfile_getarch2(vp, data_ptr, cpu_type(), 
+                       CPU_SUBTYPE_LIB64, archret);

 }
 
 /**********************************************************************
 }
 
 /**********************************************************************


@@ -249,6 +270,7 @@ fatfile_getarch_with_bits(
        vm_offset_t     data_ptr,
        struct fat_arch         *archret)
 {
        vm_offset_t     data_ptr,
        struct fat_arch         *archret)
 {

-       return fatfile_getarch2(vp, data_ptr, archbits | cpu_type(), 0, archret);
+       return fatfile_getarch2(vp, data_ptr, archbits | cpu_type(), 
+                       CPU_SUBTYPE_LIB64, archret);

 }
 
 }