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lipo.c
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lipo.c
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/*
* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* 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. 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,
* 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@
*/
/*
* The lipo(1) program. This program creates, thins and operates on fat files.
* This program takes the following options:
* <input_file>
* -output <filename>
* -create
* -info
* -detailed_info
* -arch <arch_type> <input_file>
* -arch_blank <arch_type>
* -thin <arch_type>
* -extract <arch_type>
* -remove <arch_type>
* -replace <arch_type> <file_name>
* -segalign <arch_type> <value>
* -verify_arch <arch_type> ...
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ar.h>
#ifndef AR_EFMT1
#define AR_EFMT1 "#1/" /* extended format #1 */
#endif
#include <limits.h>
#include <errno.h>
#include <ctype.h>
#include <libc.h>
#ifndef __OPENSTEP__
#include <utime.h>
#endif
#include <sys/file.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <mach/mach.h>
#include <mach-o/loader.h>
#include <mach-o/fat.h>
#include "stuff/arch.h"
#include "stuff/errors.h"
#include "stuff/allocate.h"
#include "stuff/lto.h"
/* The maximum section alignment allowed to be specified, as a power of two */
#define MAXSECTALIGN 15 /* 2**15 or 0x8000 */
/* These #undef's are because of the #define's in <mach.h> */
#undef TRUE
#undef FALSE
/* name of the program for error messages (argv[0]) */
char *progname = NULL;
/* names and types (if any) of input file specified on the commmand line */
struct input_file {
char *name;
struct arch_flag arch_flag;
struct fat_header *fat_header;
struct fat_arch *fat_arches;
enum bool is_thin;
};
static struct input_file *input_files = NULL;
static uint32_t ninput_files = 0;
/* Thin files from the input files to operate on */
struct thin_file {
char *name;
char *addr;
struct fat_arch fat_arch;
enum bool from_fat;
enum bool extract;
enum bool remove;
enum bool replace;
};
static struct thin_file *thin_files = NULL;
static uint32_t nthin_files = 0;
/* The specified output file */
static char *output_file = NULL;
static uint32_t output_filemode = 0;
#ifndef __OPENSTEP__
static struct utimbuf output_timep = { 0 };
#else
static time_t output_timep[2] = { 0 };
#endif
static enum bool archives_in_input = FALSE;
/* flags set from command line arguments to specify the operation */
static enum bool create_flag = FALSE;
static enum bool info_flag = FALSE;
static enum bool detailed_info_flag = FALSE;
static enum bool thin_flag = FALSE;
static struct arch_flag thin_arch_flag = { 0 };
static enum bool remove_flag = FALSE;
static struct arch_flag *remove_arch_flags = NULL;
static uint32_t nremove_arch_flags = 0;
static enum bool extract_flag = FALSE;
static struct arch_flag *extract_arch_flags = NULL;
static uint32_t nextract_arch_flags = 0;
static enum bool extract_family_flag = FALSE;
static enum bool replace_flag = FALSE;
struct replace {
struct arch_flag arch_flag;
struct thin_file thin_file;
};
static struct replace *replaces = NULL;
static uint32_t nreplaces = 0;
struct segalign {
struct arch_flag arch_flag;
uint32_t align;
};
static struct segalign *segaligns = NULL;
static uint32_t nsegaligns = 0;
static enum bool arch_blank_flag = FALSE;
static struct fat_header fat_header = { 0 };
static enum bool verify_flag = FALSE;
static struct arch_flag *verify_archs = NULL;
static uint32_t nverify_archs = 0;
static void create_fat(
void);
static void process_input_file(
struct input_file *input);
static void process_replace_file(
struct replace *replace);
static void check_archive(
char *name,
char *addr,
uint32_t size,
cpu_type_t *cputype,
cpu_subtype_t *cpusubtype);
static void check_extend_format_1(
char *name,
struct ar_hdr *ar_hdr,
uint32_t size_left,
uint32_t *member_name_size);
static uint32_t get_align(
struct mach_header *mhp,
struct load_command *load_commands,
uint32_t size,
char *name,
enum bool swapped);
static uint32_t get_align_64(
struct mach_header_64 *mhp64,
struct load_command *load_commands,
uint32_t size,
char *name,
enum bool swapped);
static uint32_t guess_align(
uint32_t vmaddr);
static void print_arch(
struct fat_arch *fat_arch);
static void print_cputype(
cpu_type_t cputype,
cpu_subtype_t cpusubtype);
static int size_ar_name(
char *ar_name);
static struct input_file *new_input(
void);
static struct thin_file *new_thin(
void);
static struct arch_flag *new_arch_flag(
struct arch_flag **arch_flags,
uint32_t *narch_flags);
static struct replace *new_replace(
void);
static struct segalign *new_segalign(
void);
static int cmp_qsort(
const struct thin_file *thin1,
const struct thin_file *thin2);
static uint32_t rnd(
uint32_t v,
uint32_t r);
static enum bool ispoweroftwo(
uint32_t x);
static void check_arch(
struct input_file *input,
struct thin_file *thin);
static void usage(
void);
static struct thin_file *new_blank_dylib(
struct arch_flag *arch);
/* apple_version is created by the libstuff/Makefile */
extern char apple_version[];
char *version = apple_version;
int
main(
int argc,
char *argv[],
char *envp[])
{
int fd, a;
uint32_t i, j, k, value;
char *p, *endp;
struct input_file *input;
struct arch_flag *arch_flag;
struct replace *replace;
struct segalign *segalign;
const struct arch_flag *arch_flags;
enum bool found;
struct arch_flag blank_arch;
input = NULL;
/*
* Process the command line arguments.
*/
progname = argv[0];
for(a = 1; a < argc; a++){
if(argv[a][0] == '-'){
p = &(argv[a][1]);
switch(*p){
case 'a':
if(strcmp(p, "arch") == 0 || strcmp(p, "a") == 0){
if(a + 2 >= argc){
error("missing argument(s) to %s option", argv[a]);
usage();
}
input = new_input();
if(get_arch_from_flag(argv[a+1],
&(input->arch_flag)) == 0){
error("unknown architecture specification flag: %s "
"in specifying input file %s %s %s", argv[a+1],
argv[a], argv[a+1], argv[a+2]);
arch_usage();
usage();
}
input->name = argv[a+2];
a += 2;
}
else if(strcmp(p, "arch_blank") == 0){
arch_blank_flag = TRUE;
if(a + 1 >= argc){
error("missing argument(s) to %s option", argv[a]);
usage();
}
if(get_arch_from_flag(argv[a+1], &blank_arch) == 0){
error("unknown architecture specification flag: %s "
"in specifying input file %s %s", argv[a+1],
argv[a], argv[a+1]);
arch_usage();
usage();
}
new_blank_dylib(&blank_arch);
a += 1;
}
else
goto unknown_flag;
break;
case 'c':
if(strcmp(p, "create") == 0 || strcmp(p, "c") == 0){
create_flag = TRUE;
}
else
goto unknown_flag;
break;
case 'd':
if(strcmp(p, "detailed_info") == 0 || strcmp(p, "d") == 0){
detailed_info_flag = TRUE;
}
else
goto unknown_flag;
break;
case 'e':
if(strcmp(p, "extract") == 0 ||
strcmp(p, "extract_family") == 0 ||
strcmp(p, "e") == 0){
extract_flag = TRUE;
if(strcmp(p, "extract_family") == 0)
extract_family_flag = TRUE;
if(a + 1 >= argc){
error("missing argument to %s option", argv[a]);
usage();
}
arch_flag = new_arch_flag(&extract_arch_flags,
&nextract_arch_flags);
if(get_arch_from_flag(argv[a+1], arch_flag) == 0){
error("unknown architecture specification flag: "
"%s in specifying extract operation: %s %s",
argv[a+1], argv[a], argv[a+1]);
arch_usage();
usage();
}
a++;
}
else
goto unknown_flag;
break;
case 'i':
if(strcmp(p, "info") == 0 || strcmp(p, "i") == 0){
info_flag = TRUE;
}
else
goto unknown_flag;
break;
case 'o':
if(strcmp(p, "output") == 0 || strcmp(p, "o") == 0){
if(a + 1 >= argc){
error("missing argument to %s option", argv[a]);
usage();
}
if(output_file != NULL)
fatal("more than one %s option specified", argv[a]);
output_file = argv[a + 1];
a++;
}
else
goto unknown_flag;
break;
case 'r':
if(strcmp(p, "remove") == 0 || strcmp(p, "rem") == 0){
remove_flag = TRUE;
if(a + 1 >= argc){
error("missing argument to %s option", argv[a]);
usage();
}
arch_flag = new_arch_flag(&remove_arch_flags,
&nremove_arch_flags);
if(get_arch_from_flag(argv[a+1], arch_flag) == 0){
error("unknown architecture specification flag: "
"%s in specifying remove operation: %s %s",
argv[a+1], argv[a], argv[a+1]);
arch_usage();
usage();
}
a++;
}
else if(strcmp(p, "replace") == 0 || strcmp(p, "rep") == 0){
replace_flag = TRUE;
if(a + 2 >= argc){
error("missing argument(s) to %s option", argv[a]);
usage();
}
replace = new_replace();
if(get_arch_from_flag(argv[a+1],
&(replace->arch_flag)) == 0){
error("unknown architecture specification flag: "
"%s in specifying replace operation: %s %s %s",
argv[a+1], argv[a], argv[a+1], argv[a+2]);
arch_usage();
usage();
}
replace->thin_file.name = argv[a+2];
a += 2;
}
else
goto unknown_flag;
break;
case 's':
if(strcmp(p, "segalign") == 0 || strcmp(p, "s") == 0){
if(a + 2 >= argc){
error("missing argument(s) to %s option", argv[a]);
usage();
}
segalign = new_segalign();
if(get_arch_from_flag(argv[a+1],
&(segalign->arch_flag)) == 0){
error("unknown architecture specification flag: "
"%s in specifying segment alignment: %s %s %s",
argv[a+1], argv[a], argv[a+1], argv[a+2]);
arch_usage();
usage();
}
value = strtoul(argv[a+2], &endp, 16);
if(*endp != '\0')
fatal("argument for -segalign <arch_type> %s not a "
"proper hexadecimal number", argv[a+2]);
if(!ispoweroftwo(value) || value == 0)
fatal("argument to -segalign <arch_type> %x (hex) "
"must be a non-zero power of two", value);
if(value > (1 << MAXSECTALIGN))
fatal("argument to -segalign <arch_type> %x (hex) "
"must equal to or less than %x (hex)",
value, (unsigned int)(1 << MAXSECTALIGN));
segalign->align = 0;
while((value & 0x1) != 1){
value >>= 1;
segalign->align++;
}
a += 2;
}
else
goto unknown_flag;
break;
case 't':
if(strcmp(p, "thin") == 0 || strcmp(p, "t") == 0){
if(thin_flag == TRUE)
fatal("more than one %s option specified", argv[a]);
thin_flag = TRUE;
if(a + 1 >= argc){
error("missing argument to %s option", argv[a]);
usage();
}
if(get_arch_from_flag(argv[a+1], &thin_arch_flag) == 0){
error("unknown architecture specification flag: "
"%s in specifying thin operation: %s %s",
argv[a+1], argv[a], argv[a+1]);
arch_usage();
usage();
}
a++;
}
else
goto unknown_flag;
break;
case 'v':
if(strcmp(p, "verify_arch") == 0){
verify_flag = TRUE;
if(a + 1 >= argc){
error("missing argument(s) to %s option", argv[a]);
usage();
}
a++;
nverify_archs = argc - a;
verify_archs = (struct arch_flag *)allocate(
sizeof(struct arch_flag) * nverify_archs);
for(i = 0; a < argc; a++, i++){
if(get_arch_from_flag(argv[a],
verify_archs + i) == 0){
error("unknown architecture specification "
"flag: %s in specifying -verify_arch "
"operation", argv[a]);
arch_usage();
usage();
}
}
}
else
goto unknown_flag;
break;
default:
unknown_flag:
fatal("unknown flag: %s", argv[a]);
}
}
else{
input = new_input();
input->name = argv[a];
}
}
/*
* Check to see the specified arguments are valid.
*/
if(info_flag == FALSE && detailed_info_flag == FALSE &&
create_flag == FALSE && thin_flag == FALSE &&
extract_flag == FALSE && remove_flag == FALSE &&
replace_flag == FALSE && verify_flag == FALSE){
error("one of -create, -thin <arch_type>, -extract <arch_type>, "
"-remove <arch_type>, -replace <arch_type> <file_name>, "
"-verify_arch <arch_type> ... , "
"-info or -detailed_info must be specified");
usage();
}
if((create_flag == TRUE || thin_flag == TRUE || extract_flag == TRUE ||
remove_flag == TRUE || replace_flag == TRUE) &&
output_file == NULL){
error("no output file specified");
usage();
}
if(ninput_files == 0){
error("no input files specified");
usage();
}
if(verify_flag == TRUE && ninput_files != 1){
error("only one input file allowed with -verify_arch");
usage();
}
if(create_flag + thin_flag + extract_flag + remove_flag + replace_flag +
info_flag + detailed_info_flag + verify_flag > 1){
error("only one of -create, -thin <arch_type>, -extract <arch_type>"
", -remove <arch_type>, -replace <arch_type> <file_name>, "
"-verify_arch <arch_type> ..., "
"-info or -detailed_info can be specified");
usage();
}
if(arch_blank_flag == TRUE && create_flag == FALSE){
error("-arch_blank may only be used with -create");
usage();
}
/*
* Determine the types of the input files.
*/
for(i = 0; i < ninput_files; i++)
process_input_file(input_files + i);
/*
* Do the specified operation.
*/
if(create_flag){
/* check to make sure no two files have the same architectures */
for(i = 0; i < nthin_files; i++)
for(j = i + 1; j < nthin_files; j++)
if(thin_files[i].fat_arch.cputype ==
thin_files[j].fat_arch.cputype &&
(thin_files[i].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK)==
(thin_files[j].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK)){
arch_flags = get_arch_flags();
for(k = 0; arch_flags[k].name != NULL; k++){
if(arch_flags[k].cputype ==
thin_files[j].fat_arch.cputype &&
(arch_flags[k].cpusubtype &
~CPU_SUBTYPE_MASK) ==
(thin_files[j].fat_arch.cpusubtype &
~CPU_SUBTYPE_MASK))
fatal("%s and %s have the same architectures (%s) "
"and can't be in the same fat output file",
thin_files[i].name, thin_files[j].name,
arch_flags[k].name);
}
fatal("%s and %s have the same architectures (cputype "
"(%d) and cpusubtype (%d)) and can't be in the "
"same fat output file", thin_files[i].name,
thin_files[j].name,thin_files[i].fat_arch.cputype,
thin_files[i].fat_arch.cpusubtype &
~CPU_SUBTYPE_MASK);
}
create_fat();
}
if(thin_flag){
if(ninput_files != 1)
fatal("only one input file can be specified with the -thin "
"option");
if(input_files[0].fat_header == NULL)
fatal("input file (%s) must be a fat file when the -thin "
"option is specified", input_files[0].name);
for(i = 0; i < nthin_files; i++){
if(thin_files[i].fat_arch.cputype == thin_arch_flag.cputype &&
(thin_files[i].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK) ==
(thin_arch_flag.cpusubtype & ~CPU_SUBTYPE_MASK)){
(void)unlink(output_file);
if((fd = open(output_file, O_WRONLY | O_CREAT | O_TRUNC,
output_filemode)) == -1)
system_fatal("can't create output file: %s",
output_file);
if(write(fd, thin_files[i].addr,thin_files[i].fat_arch.size)
!= (int)(thin_files[i].fat_arch.size))
system_fatal("can't write thin file to output file: %s",
output_file);
if(close(fd) == -1)
system_fatal("can't close output file: %s",output_file);
if(utime(output_file,
#ifndef __OPENSTEP__
&output_timep) == -1)
#else
output_timep) == -1)
#endif
system_fatal("can't set the modifiy times for "
"output file: %s", output_file);
break;
}
}
if(i == nthin_files)
fatal("fat input file (%s) does not contain the specified "
"architecture (%s) to thin it to", input->name,
thin_arch_flag.name);
}
if(extract_flag){
if(ninput_files != 1)
fatal("only one input file can be specified with the -extract "
"option");
if(input_files[0].fat_header == NULL)
fatal("input file (%s) must be a fat file when the -extract "
"option is specified", input_files[0].name);
for(i = 0; i < nextract_arch_flags; i++){
for(j = i + 1; j < nextract_arch_flags; j++){
if(extract_arch_flags[i].cputype ==
extract_arch_flags[j].cputype &&
(extract_arch_flags[i].cpusubtype & ~CPU_SUBTYPE_MASK) ==
(thin_files[j].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK))
fatal("-extract %s specified multiple times",
extract_arch_flags[i].name);
}
}
/* mark those thin files for extraction */
for(i = 0; i < nextract_arch_flags; i++){
found = FALSE;
for(j = 0; j < nthin_files; j++){
if(extract_arch_flags[i].cputype ==
thin_files[j].fat_arch.cputype &&
((extract_arch_flags[i].cpusubtype &
~CPU_SUBTYPE_MASK)==
(thin_files[j].fat_arch.cpusubtype &
~CPU_SUBTYPE_MASK) ||
extract_family_flag == TRUE)){
thin_files[j].extract = TRUE;
found = TRUE;
}
}
if(found == FALSE)
fatal("-extract %s specified but fat file: %s does not "
"contain that architecture",
extract_arch_flags[i].name, input_files[0].name);
}
/* remove those thin files not marked for extraction */
for(i = 0; i < nthin_files; ){
if(thin_files[i].extract == FALSE){
for(j = i; j < nthin_files - 1; j++)
thin_files[j] = thin_files[j + 1];
nthin_files--;
}
else
i++;
}
create_fat();
}
if(remove_flag){
if(ninput_files != 1)
fatal("only one input file can be specified with the -remove "
"option");
if(input_files[0].fat_header == NULL)
fatal("input file (%s) must be a fat file when the -remove "
"option is specified", input_files[0].name);
for(i = 0; i < nremove_arch_flags; i++){
for(j = i + 1; j < nremove_arch_flags; j++){
if(remove_arch_flags[i].cputype ==
remove_arch_flags[j].cputype &&
(remove_arch_flags[i].cpusubtype & ~CPU_SUBTYPE_MASK) ==
(remove_arch_flags[j].cpusubtype & ~CPU_SUBTYPE_MASK))
fatal("-remove %s specified multiple times",
remove_arch_flags[i].name);
}
}
/* mark those thin files for removal */
for(i = 0; i < nremove_arch_flags; i++){
for(j = 0; j < nthin_files; j++){
if(remove_arch_flags[i].cputype ==
thin_files[j].fat_arch.cputype &&
(remove_arch_flags[i].cpusubtype &
~CPU_SUBTYPE_MASK) ==
(thin_files[j].fat_arch.cpusubtype &
~CPU_SUBTYPE_MASK)){
thin_files[j].remove = TRUE;
break;
}
}
if(j == nthin_files)
fatal("-remove %s specified but fat file: %s does not "
"contain that architecture",
remove_arch_flags[i].name, input_files[0].name);
}
/* remove those thin files marked for removal */
for(i = 0; i < nthin_files; ){
if(thin_files[i].remove == TRUE){
for(j = i; j < nthin_files; j++)
thin_files[j] = thin_files[j + 1];
nthin_files--;
}
else
i++;
}
if(nthin_files == 0)
fatal("-remove's specified would result in an empty fat file");
create_fat();
}
if(replace_flag){
if(ninput_files != 1)
fatal("only one input file can be specified with the -replace "
"option");
if(input_files[0].fat_header == NULL)
fatal("input file (%s) must be a fat file when the -replace "
"option is specified", input_files[0].name);
for(i = 0; i < nreplaces; i++){
for(j = i + 1; j < nreplaces; j++){
if(replaces[i].arch_flag.cputype ==
replaces[j].arch_flag.cputype &&
(replaces[i].arch_flag.cpusubtype & ~CPU_SUBTYPE_MASK) ==
(replaces[j].arch_flag.cpusubtype & ~CPU_SUBTYPE_MASK))
fatal("-replace %s <file_name> specified multiple times",
replaces[j].arch_flag.name);
}
}
for(i = 0; i < nreplaces; i++){
process_replace_file(replaces + i);
for(j = 0; j < nthin_files; j++){
if(replaces[i].arch_flag.cputype ==
thin_files[j].fat_arch.cputype &&
(replaces[i].arch_flag.cpusubtype & ~CPU_SUBTYPE_MASK) ==
(thin_files[j].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK)){
thin_files[j] = replaces[i].thin_file;
break;
}
}
if(j == nthin_files)
fatal("-replace %s <file_name> specified but fat file: %s "
"does not contain that architecture",
replaces[i].arch_flag.name, input_files[0].name);
}
create_fat();
}
if(info_flag){
for(i = 0; i < ninput_files; i++){
if(input_files[i].fat_header != NULL){
printf("Architectures in the fat file: %s are: ",
input_files[i].name);
for(j = 0; j < input_files[i].fat_header->nfat_arch; j++){
print_arch(&(input_files[i].fat_arches[j]));
printf(" ");
}
printf("\n");
}
else{
if(input_files[i].is_thin == FALSE)
printf("input file %s is not a fat file\n",
input_files[i].name);
}
}
for(i = 0; i < nthin_files; i++){
if(thin_files[i].from_fat == TRUE)
continue;
printf("Non-fat file: %s is architecture: %s\n",
thin_files[i].name,
get_arch_name_from_types(thin_files[i].fat_arch.cputype,
thin_files[i].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK));
}
}
if(detailed_info_flag){
for(i = 0; i < ninput_files; i++){
if(input_files[i].fat_header != NULL){
printf("Fat header in: %s\n", input_files[i].name);
printf("fat_magic 0x%x\n",
(unsigned int)(input_files[i].fat_header->magic));
printf("nfat_arch %u\n",
input_files[i].fat_header->nfat_arch);
for(j = 0; j < input_files[i].fat_header->nfat_arch; j++){
printf("architecture ");
print_arch(&(input_files[i].fat_arches[j]));
printf("\n");
print_cputype(input_files[i].fat_arches[j].cputype,
input_files[i].fat_arches[j].cpusubtype &
~CPU_SUBTYPE_MASK);
printf(" offset %u\n",
input_files[i].fat_arches[j].offset);
printf(" size %u\n",
input_files[i].fat_arches[j].size);
printf(" align 2^%u (%d)\n",
input_files[i].fat_arches[j].align,
1 << input_files[i].fat_arches[j].align);
}
}
else{
printf("input file %s is not a fat file\n",
input_files[i].name);
}
}
for(i = 0; i < nthin_files; i++){
if(thin_files[i].from_fat == TRUE)
continue;
printf("Non-fat file: %s is architecture: %s\n",
thin_files[i].name,
get_arch_name_from_types(thin_files[i].fat_arch.cputype,
thin_files[i].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK));
}
}
if(verify_flag == TRUE){
for(i = 0; i < nverify_archs; i++){
found = FALSE;
for(j = 0; j < nthin_files; j++){
if(verify_archs[i].cputype ==
thin_files[j].fat_arch.cputype &&
(verify_archs[i].cpusubtype & ~CPU_SUBTYPE_MASK) ==
(thin_files[j].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK)){
found = TRUE;
break;
}
}
if(found == FALSE)
exit(1);
}
}
return(0);
}
/*
* create_fat() creates a fat output file from the thin files.
*/
static
void
create_fat(void)
{
uint32_t i, j, offset;
int fd;
/* fold in specified segment alignments */
for(i = 0; i < nsegaligns; i++){
for(j = i + 1; j < nsegaligns; j++){
if(segaligns[i].arch_flag.cputype ==
segaligns[j].arch_flag.cputype &&
(segaligns[i].arch_flag.cpusubtype & ~CPU_SUBTYPE_MASK) ==
(segaligns[j].arch_flag.cpusubtype & ~CPU_SUBTYPE_MASK))
fatal("-segalign %s <value> specified multiple times",
segaligns[j].arch_flag.name);
}
}
for(i = 0; i < nsegaligns; i++){
for(j = 0; j < nthin_files; j++){
if(segaligns[i].arch_flag.cputype ==
thin_files[j].fat_arch.cputype &&
(segaligns[i].arch_flag.cpusubtype & ~CPU_SUBTYPE_MASK) ==
(thin_files[j].fat_arch.cpusubtype & ~CPU_SUBTYPE_MASK)){
/*
Since this program has to guess at alignments and guesses high when unsure this
check shouldn't be used so the the correct alignment can be specified by the
the user.
if(thin_files[j].fat_arch.align > segaligns[i].align)
fatal("specified segment alignment: %d for "
"architecture %s is less than the alignment: %d "
"required from the input file",
1 << segaligns[i].align,
segaligns[i].arch_flag.name,
1 << thin_files[j].fat_arch.align);
*/
thin_files[j].fat_arch.align = segaligns[i].align;
break;
}
}
if(j == nthin_files)
fatal("-segalign %s <value> specified but resulting fat "
"file does not contain that architecture",
segaligns[i].arch_flag.name);
}
/* sort the files by alignment to save space in the output file */
qsort(thin_files, nthin_files, sizeof(struct thin_file),
(int (*)(const void *, const void *))cmp_qsort);
/* Fill in the fat header and the fat_arch's offsets. */
fat_header.magic = FAT_MAGIC;
fat_header.nfat_arch = nthin_files;
offset = sizeof(struct fat_header) +
nthin_files * sizeof(struct fat_arch);
for(i = 0; i < nthin_files; i++){
offset = rnd(offset, 1 << thin_files[i].fat_arch.align);
thin_files[i].fat_arch.offset = offset;
offset += thin_files[i].fat_arch.size;
}
/*
* Create the output file. The unlink() is done to handle the
* problem when the outputfile is not writable but the directory
* allows the file to be removed and thus created (since the file
* may not be there the return code of the unlink() is ignored).
*/
(void)unlink(output_file);
if((fd = open(output_file, O_WRONLY | O_CREAT | O_TRUNC,
output_filemode)) == -1)
system_fatal("can't create output file: %s", output_file);
/*
* If this is an extract_family_flag operation and the is just one
* thin file on the list don't create a fat file.
*/
if(extract_family_flag != TRUE || nthin_files != 1){
#ifdef __LITTLE_ENDIAN__
swap_fat_header(&fat_header, BIG_ENDIAN_BYTE_SEX);
#endif /* __LITTLE_ENDIAN__ */
if(write(fd, &fat_header, sizeof(struct fat_header)) !=
sizeof(struct fat_header))
system_fatal("can't wtite fat header to output file: %s",
output_file);
#ifdef __LITTLE_ENDIAN__
swap_fat_header(&fat_header, LITTLE_ENDIAN_BYTE_SEX);
#endif /* __LITTLE_ENDIAN__ */
for(i = 0; i < nthin_files; i++){
#ifdef __LITTLE_ENDIAN__
swap_fat_arch(&(thin_files[i].fat_arch), 1,BIG_ENDIAN_BYTE_SEX);
#endif /* __LITTLE_ENDIAN__ */
if(write(fd, &(thin_files[i].fat_arch),
sizeof(struct fat_arch)) != sizeof(struct fat_arch))
system_fatal("can't write fat arch to output file: %s",
output_file);
#ifdef __LITTLE_ENDIAN__
swap_fat_arch(&(thin_files[i].fat_arch), 1,
LITTLE_ENDIAN_BYTE_SEX);
#endif /* __LITTLE_ENDIAN__ */
}
}
for(i = 0; i < nthin_files; i++){
if(extract_family_flag == FALSE || nthin_files > 1)
if(lseek(fd, thin_files[i].fat_arch.offset, L_SET) == -1)
system_fatal("can't lseek in output file: %s", output_file);
if(write(fd, thin_files[i].addr, thin_files[i].fat_arch.size)
!= (int)(thin_files[i].fat_arch.size))
system_fatal("can't write to output file: %s", output_file);
}
if(close(fd) == -1)
system_fatal("can't close output file: %s", output_file);
}
/*
* process_input_file() checks input file and breaks it down into thin files
* for later operations.
*/
static
void
process_input_file(
struct input_file *input)
{
int fd;
struct stat stat_buf, stat_buf2;
uint32_t size, i, j;
char *addr;
struct thin_file *thin;
struct mach_header *mhp, mh;
struct mach_header_64 *mhp64, mh64;
struct load_command *lcp;
cpu_type_t cputype;
cpu_subtype_t cpusubtype;
enum bool swapped;
uint64_t big_size;
/* Open the input file and map it in */
if((fd = open(input->name, O_RDONLY)) == -1)
system_fatal("can't open input file: %s", input->name);
if(fstat(fd, &stat_buf) == -1)
system_fatal("Can't stat input file: %s", input->name);
size = stat_buf.st_size;
/* pick up set uid, set gid and sticky text bits */
output_filemode = stat_buf.st_mode & 07777;
/*
* Select the eariliest modifiy time so that if the output file
* contains archives with table of contents lipo will not make them
* out of date. This logic however could make an out of date table of
* contents appear up todate if another file is combined with it that
* has a date early enough.
*/
#ifndef __OPENSTEP__
if(output_timep.modtime == 0 ||
output_timep.modtime > stat_buf.st_mtime){
output_timep.actime = stat_buf.st_atime;
output_timep.modtime = stat_buf.st_mtime;
}
#else
if(output_timep[1] == 0 || output_timep[1] > stat_buf.st_mtime){
output_timep[0] = stat_buf.st_atime;
output_timep[1] = stat_buf.st_mtime;
}
#endif
/*
* mmap() can't handle mapping regular files with zero size. So this
* is handled separately.
*/
if((stat_buf.st_mode & S_IFREG) == S_IFREG && size == 0)
addr = NULL;
else
addr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE,
fd, 0);
if((intptr_t)addr == -1)
system_fatal("Can't map input file: %s", input->name);
/*
* Because of rdar://8087586 we do a second stat to see if the file
* is still there and the same file.
*/
if(fstat(fd, &stat_buf2) == -1)
system_fatal("Can't stat input file: %s", input->name);
if(stat_buf2.st_size != size ||