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_srcversion.h"
37
38 /*******************************************************************************
39 *******************************************************************************/
40 void
kxld_srcversion_init_from_macho(KXLDsrcversion * srcversion,struct source_version_command * src)41 kxld_srcversion_init_from_macho(KXLDsrcversion *srcversion, struct source_version_command *src)
42 {
43 check(srcversion);
44 check(src);
45
46 srcversion->version = src->version;
47 srcversion->has_srcversion = TRUE;
48 }
49
50 /*******************************************************************************
51 *******************************************************************************/
52 void
kxld_srcversion_clear(KXLDsrcversion * srcversion)53 kxld_srcversion_clear(KXLDsrcversion *srcversion)
54 {
55 bzero(srcversion, sizeof(*srcversion));
56 }
57
58 /*******************************************************************************
59 *******************************************************************************/
60 u_long
kxld_srcversion_get_macho_header_size(void)61 kxld_srcversion_get_macho_header_size(void)
62 {
63 return sizeof(struct source_version_command);
64 }
65
66 /*******************************************************************************
67 *******************************************************************************/
68 kern_return_t
kxld_srcversion_export_macho(const KXLDsrcversion * srcversion,u_char * buf,u_long * header_offset,u_long header_size)69 kxld_srcversion_export_macho(const KXLDsrcversion *srcversion, u_char *buf,
70 u_long *header_offset, u_long header_size)
71 {
72 kern_return_t rval = KERN_FAILURE;
73 struct source_version_command *srcversionhdr = NULL;
74
75 check(srcversion);
76 check(buf);
77 check(header_offset);
78
79 require_action(sizeof(*srcversionhdr) <= header_size - *header_offset, finish,
80 rval = KERN_FAILURE);
81 srcversionhdr = (struct source_version_command *) ((void *) (buf + *header_offset));
82 *header_offset += sizeof(*srcversionhdr);
83
84 srcversionhdr->cmd = LC_SOURCE_VERSION;
85 srcversionhdr->cmdsize = (uint32_t) sizeof(*srcversionhdr);
86 srcversionhdr->version = srcversion->version;
87
88 rval = KERN_SUCCESS;
89
90 finish:
91 return rval;
92 }
93