Members/taiki/Mach-OLoader: loader.c annotate

annotate loader.c @ 2:747f68297ba5 default tip

add c language mach-O loader program. this program only analize, can't still load now.

author	taiki <taiki@cr.ie.u-ryukyu.ac.jp>
date	Tue, 04 Mar 2014 14:41:35 +0900
parents	1b796d0dd763
children

rev	line source
0 075d70197fc2 add written files. taiki parents: diff changeset	1 #include <stdio.h>
075d70197fc2 add written files. taiki parents: diff changeset	2 #include <stdlib.h>
075d70197fc2 add written files. taiki parents: diff changeset	3 #include <string.h>
075d70197fc2 add written files. taiki parents: diff changeset	4 #include <fcntl.h>
075d70197fc2 add written files. taiki parents: diff changeset	5 #include <unistd.h>
075d70197fc2 add written files. taiki parents: diff changeset	6 #include <sys/stat.h>
075d70197fc2 add written files. taiki parents: diff changeset	7 #include <sys/mman.h>
075d70197fc2 add written files. taiki parents: diff changeset	8 #include <mach-o/loader.h>
075d70197fc2 add written files. taiki parents: diff changeset	9
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	10 #define NAME_MAX_LENGTH 256
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	11 #define MAX_SEGMENT_NUM 256
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	12
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	13 struct mach_o_data {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	14 int mh64_size;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	15 int sc64_size;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	16 int sect64_size;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	17 };
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	18
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	19 struct data_count {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	20 int nsects_count;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	21 int sc_count;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	22 };
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	23
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	24 /* prototype */
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	25
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	26 __code analyze_mach_o(struct mach_o_data md, struct mach_header_64 mh64, struct segment_command_64 sc64, struct section_64 sect64, struct data_count dc, char head, int fp, int j);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	27
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	28 /* end */
0 075d70197fc2 add written files. taiki parents: diff changeset	29
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	30 __code finish(int fp, struct segment_command_64 sc64, struct section_64 sect64)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	31 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	32 close(fp);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	33 free(sc64);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	34 free(sect64);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	35 printf("close \n");
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	36 }
0 075d70197fc2 add written files. taiki parents: diff changeset	37
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	38 __code make_section(
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	39 struct mach_o_data md,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	40 struct mach_header_64 *mh64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	41 struct segment_command_64 *sc64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	42 struct section_64 *sect64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	43 struct data_count dc,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	44 char *head,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	45 char *c_sect64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	46 int fp,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	47 int scsect_count,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	48 int sectsize_count,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	49 int cmd_count)
0 075d70197fc2 add written files. taiki parents: diff changeset	50 {
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	51 if(scsect_count < sc64->nsects) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	52 if(sectsize_count < md.sect64_size) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	53 c_sect64[sectsize_count] = head[md.mh64_size + md.sc64_size * dc.sc_count + (dc.nsects_count + scsect_count) * md.sect64_size + sectsize_count];
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	54 sectsize_count++;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	55 goto make_section(md, mh64, sc64, sect64, dc, head, c_sect64, fp, scsect_count, sectsize_count, cmd_count);
0 075d70197fc2 add written files. taiki parents: diff changeset	56 }
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	57 sect64 = (struct section_64 *)c_sect64;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	58 printf("%s %s \n", sect64->segname, sect64->sectname);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	59 sect64 = NULL;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	60 scsect_count++;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	61 sectsize_count = 0;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	62 goto make_section(md, mh64, sc64, sect64, dc, head, c_sect64, fp, scsect_count, sectsize_count, cmd_count);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	63 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	64 free(c_sect64);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	65 dc.nsects_count += sc64->nsects;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	66 cmd_count++;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	67 goto analyze_mach_o(md, mh64, sc64, sect64, dc, head, fp, cmd_count);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	68 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	69
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	70 __code check_segment(
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	71 struct mach_o_data md,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	72 struct mach_header_64 *mh64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	73 struct segment_command_64 *sc64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	74 struct section_64 *sect64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	75 struct data_count dc,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	76 char *head,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	77 int fp,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	78 int scsect_count,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	79 int cmd_count)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	80 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	81 if (LC_SEGMENT_64 == sc64->cmd) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	82 printf("segment command :LC_SEGMENT_64");
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	83 printf("\tsegname :%s \n", sc64->segname);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	84 printf("\tvmaddr :%#llx \n", sc64->vmaddr);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	85 printf("\tvmsize :%lld \n", sc64->vmsize);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	86 printf("\tfileoff :%#llx \n", sc64->fileoff);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	87 printf("\tnumber of section :%d\n", sc64->nsects);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	88 dc.sc_count++;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	89 char c_sect64 = (char )malloc(sizeof(struct section_64 *));
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	90 int sectsize_count = 0;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	91 goto make_section(md, mh64, sc64, sect64, dc, head, c_sect64, fp, scsect_count , sectsize_count, cmd_count);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	92 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	93 goto finish(fp, sc64, sect64);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	94 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	95
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	96 __code make_segment_command(
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	97 struct mach_o_data md,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	98 struct mach_header_64 *mh64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	99 struct segment_command_64 *sc64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	100 struct section_64 *sect64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	101 struct data_count dc,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	102 char *head,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	103 char *c_sc64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	104 int fp,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	105 int scsize_count,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	106 int cmd_count)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	107 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	108 if (cmd_count < mh64->ncmds) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	109 if (scsize_count < md.sc64_size) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	110 c_sc64[scsize_count] = head[md.mh64_size + md.sc64_size * dc.sc_count + dc.nsects_count * md.sect64_size + scsize_count];
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	111 scsize_count++;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	112 goto make_segment_command(md, mh64, sc64, sect64, dc, head, c_sc64,fp, scsize_count, cmd_count);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	113 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	114 sc64 = (struct segment_command_64 *)c_sc64;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	115 int scsect_count = 0;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	116 goto check_segment(md, mh64, sc64, sect64, dc, head, fp, scsect_count ,cmd_count);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	117 } else {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	118 free(c_sc64);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	119 goto finish(fp, sc64, sect64);
0 075d70197fc2 add written files. taiki parents: diff changeset	120 }
075d70197fc2 add written files. taiki parents: diff changeset	121 }
075d70197fc2 add written files. taiki parents: diff changeset	122
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	123
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	124 __code analyze_mach_o(
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	125 struct mach_o_data md,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	126 struct mach_header_64 *mh64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	127 struct segment_command_64 *sc64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	128 struct section_64 *sect64,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	129 struct data_count dc,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	130 char *head,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	131 int fp,
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	132 int cmd_count)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	133 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	134 int scsize_count = 0;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	135 char c_sc64 = (char )malloc(sizeof(struct segment_command_64));
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	136 goto make_segment_command(md, mh64, sc64, sect64, dc, head, c_sc64, fp, scsize_count, cmd_count);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	137 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	138
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	139 __code ready_analyzing(struct mach_header_64 mh64, char head, int fp)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	140 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	141 struct mach_o_data md;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	142 md.mh64_size = sizeof(struct mach_header_64);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	143 md.sc64_size = sizeof(struct segment_command_64);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	144 md.sect64_size = sizeof(struct section_64);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	145
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	146 struct segment_command_64 sc64 = (struct segment_command_64 )malloc(sizeof(struct segment_command_64));
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	147 struct section_64 sect64 = (struct section_64 )malloc(sizeof(struct section_64));
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	148
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	149 struct data_count dc;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	150 dc.nsects_count = 0;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	151 dc.sc_count = 0;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	152 int cmd_count = 0;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	153 goto analyze_mach_o(md, mh64, sc64, sect64, dc, head,fp, cmd_count);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	154 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	155
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	156 __code judge_mach_o_file(struct mach_header_64 mh64, char head, char *filename, int fp)
0 075d70197fc2 add written files. taiki parents: diff changeset	157 {
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	158 printf("%s is executable file.\n", filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	159 printf("number of load commands : %d\n", mh64->ncmds);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	160 printf("size of cmds : %d\n", mh64->sizeofcmds);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	161
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	162 free(filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	163
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	164 if (CPU_TYPE_X86_64 == mh64->cputype) printf("CPU : x86_64\n");
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	165 goto ready_analyzing(mh64, head, fp);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	166 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	167
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	168 __code judge_filetype(struct mach_header_64 mh64 , char head, char *filename, int fp)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	169 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	170 if (MH_EXECUTE != mh64->filetype) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	171 fprintf(stderr, "This is not executable file.\n");
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	172 return;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	173 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	174 goto judge_mach_o_file(mh64, head, filename, fp);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	175 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	176
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	177 __code judge_header(int fp, struct stat sb, char head, char filename)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	178 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	179 struct mach_header_64 mh64 = (struct mach_header_64 )head;
0 075d70197fc2 add written files. taiki parents: diff changeset	180
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	181 if (MH_MAGIC_64 != mh64->magic) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	182 fprintf(stderr, "This is not mach header 64.\n");
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	183 return;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	184 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	185 if (MH_MAGIC_64 == mh64->magic)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	186 printf("%s is 64bit Mach-O file.\n", filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	187
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	188 goto judge_filetype(mh64, head, filename, fp);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	189 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	190
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	191 __code file_map(int fp, struct stat sb, char *filename)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	192 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	193 char *head = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fp, 0);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	194 goto judge_header(fp, sb, head, filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	195 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	196
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	197 __code get_fstat(int fp, char *filename)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	198 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	199 struct stat sb;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	200 fstat(fp, &sb);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	201 goto file_map(fp, sb, filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	202 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	203
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	204 __code file_open(char *filename)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	205 {
0 075d70197fc2 add written files. taiki parents: diff changeset	206 int fp;
075d70197fc2 add written files. taiki parents: diff changeset	207 if ((fp = open(filename, O_RDONLY)) < 0) {
075d70197fc2 add written files. taiki parents: diff changeset	208 fprintf(stderr, "can not open file\t: %s\n", filename);
075d70197fc2 add written files. taiki parents: diff changeset	209 exit(1);
075d70197fc2 add written files. taiki parents: diff changeset	210 }
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	211 goto get_fstat(fp, filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	212 }
0 075d70197fc2 add written files. taiki parents: diff changeset	213
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	214 __code option_reader(int argc, char *argv[], char filename[NAME_MAX_LENGTH], int i)
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	215 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	216 if (i < argc) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	217 if(argv[i][0] == '-') {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	218 if(strcmp(argv[i], "-name")==0) {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	219 strncpy(filename, argv[i], NAME_MAX_LENGTH);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	220 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	221 } else {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	222 strncpy(filename, argv[i], NAME_MAX_LENGTH);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	223 }
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	224 printf("read %s\n", filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	225 i++;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	226 goto option_reader(argc, argv, filename, i);
0 075d70197fc2 add written files. taiki parents: diff changeset	227 }
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	228 printf("use %s \n", filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	229 goto file_open(filename);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	230 }
0 075d70197fc2 add written files. taiki parents: diff changeset	231
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	232 void mach_o_loader(int argc, char *argv[])
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	233 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	234 int argv_count = 0;
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	235 char filename = (char )malloc(sizeof(char)*NAME_MAX_LENGTH);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	236 goto option_reader(argc, argv, filename, argv_count);
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	237 }
0 075d70197fc2 add written files. taiki parents: diff changeset	238
1 1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	239 int main(int argc, char*argv[])
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	240 {
1b796d0dd763 display segment command and section in Mach-O executable. taiki parents: 0 diff changeset	241 mach_o_loader(argc, argv);
0 075d70197fc2 add written files. taiki parents: diff changeset	242 return 0;
075d70197fc2 add written files. taiki parents: diff changeset	243 }

Mercurial > hg > Members > taiki > Mach-OLoader

annotate loader.c @ 2:747f68297ba5 default tip