1/*
2 * Copyright (c) 2011 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28#include <string.h>
29#include <mach-o/loader.h>
30#include <sys/types.h>
31
32#define DEBUG_ASSERT_COMPONENT_NAME_STRING "kxld"
33#include <AssertMacros.h>
34
35#include "kxld_util.h"
36#include "kxld_versionmin.h"
37
38/*******************************************************************************
39*******************************************************************************/
40void
41kxld_versionmin_init_from_macho(KXLDversionmin *versionmin, struct version_min_command *src)
42{
43    check(versionmin);
44    check(src);
45    check((src->cmd == LC_VERSION_MIN_MACOSX) || (src->cmd == LC_VERSION_MIN_IPHONEOS));
46
47    switch (src->cmd) {
48        case LC_VERSION_MIN_MACOSX:
49            versionmin->platform = kKxldVersionMinMacOSX;
50            break;
51        case LC_VERSION_MIN_IPHONEOS:
52            versionmin->platform = kKxldVersionMiniPhoneOS;
53            break;
54    }
55
56    versionmin->version = src->version;
57    versionmin->has_versionmin = TRUE;
58}
59
60/*******************************************************************************
61*******************************************************************************/
62void
63kxld_versionmin_clear(KXLDversionmin *versionmin)
64{
65    bzero(versionmin, sizeof(*versionmin));
66}
67
68/*******************************************************************************
69*******************************************************************************/
70u_long
71kxld_versionmin_get_macho_header_size(void)
72{
73    return sizeof(struct version_min_command);
74}
75
76/*******************************************************************************
77*******************************************************************************/
78kern_return_t
79kxld_versionmin_export_macho(const KXLDversionmin *versionmin, u_char *buf,
80    u_long *header_offset, u_long header_size)
81{
82    kern_return_t rval = KERN_FAILURE;
83    struct version_min_command *versionminhdr = NULL;
84
85    check(versionmin);
86    check(buf);
87    check(header_offset);
88
89    require_action(sizeof(*versionminhdr) <= header_size - *header_offset, finish,
90        rval=KERN_FAILURE);
91    versionminhdr = (struct version_min_command *) ((void *) (buf + *header_offset));
92    bzero(versionminhdr, sizeof(*versionminhdr));
93    *header_offset += sizeof(*versionminhdr);
94
95    switch (versionmin->platform) {
96        case kKxldVersionMinMacOSX:
97            versionminhdr->cmd = LC_VERSION_MIN_MACOSX;
98            break;
99        case kKxldVersionMiniPhoneOS:
100            versionminhdr->cmd = LC_VERSION_MIN_IPHONEOS;
101            break;
102    }
103    versionminhdr->cmdsize = (uint32_t) sizeof(*versionminhdr);
104    versionminhdr->version = versionmin->version;
105    versionminhdr->sdk = 0;
106
107    rval = KERN_SUCCESS;
108
109finish:
110    return rval;
111}
112
113