1 /*- 2 * Copyright (c) 2007 Kai Wang 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $Id: ar.h 2496 2012-04-24 02:33:40Z jkoshy $ 27 */ 28 29 #include <libelf.h> 30 31 #include "_elftc.h" 32 33 /* 34 * ar(1) options. 35 */ 36 #define AR_A 0x0001 /* position-after */ 37 #define AR_B 0x0002 /* position-before */ 38 #define AR_C 0x0004 /* creating new archive */ 39 #define AR_CC 0x0008 /* do not overwrite when extracting */ 40 #define AR_J 0x0010 /* bzip2 compression */ 41 #define AR_O 0x0020 /* preserve original mtime when extracting */ 42 #define AR_S 0x0040 /* write archive symbol table */ 43 #define AR_SS 0x0080 /* do not write archive symbol table */ 44 #define AR_TR 0x0100 /* only keep first 15 chars for member name */ 45 #define AR_U 0x0200 /* only extract or update newer members.*/ 46 #define AR_V 0x0400 /* verbose mode */ 47 #define AR_Z 0x0800 /* gzip compression */ 48 #define AR_D 0x1000 /* insert dummy mode, mtime, uid and gid */ 49 #define AR_BSD 0x2000 /* use the BSD archive format */ 50 51 #define DEF_BLKSZ 10240 /* default block size */ 52 53 /* Special names. */ 54 55 #define AR_STRINGTAB_NAME_SVR4 "//" 56 #define AR_SYMTAB_NAME_BSD "__.SYMDEF" 57 #define AR_SYMTAB_NAME_SVR4 "/" 58 59 /* 60 * Convenient wrapper for general libarchive error handling. 61 */ 62 #define AC(CALL) do { \ 63 if ((CALL)) \ 64 bsdar_errc(bsdar, 0, "%s", \ 65 archive_error_string(a)); \ 66 } while (0) 67 68 /* 69 * The 'ACV' wrapper is used for libarchive APIs that changed from 70 * returning 'void' to returning an 'int' in later versions of libarchive. 71 */ 72 #if ARCHIVE_VERSION_NUMBER >= 2000000 73 #define ACV(CALL) AC(CALL) 74 #else 75 #define ACV(CALL) do { \ 76 (CALL); \ 77 } while (0) 78 #endif 79 80 /* 81 * In-memory representation of archive member(object). 82 */ 83 struct ar_obj { 84 Elf *elf; /* object file descriptor */ 85 char *name; /* member name */ 86 uid_t uid; /* user id */ 87 gid_t gid; /* group id */ 88 mode_t md; /* octal file permissions */ 89 size_t size; /* member size */ 90 time_t mtime; /* modification time */ 91 dev_t dev; /* inode's device */ 92 ino_t ino; /* inode's number */ 93 94 TAILQ_ENTRY(ar_obj) objs; 95 }; 96 97 /* 98 * Structure encapsulates the "global" data for "ar" program. 99 */ 100 struct bsdar { 101 const char *filename; /* archive name. */ 102 const char *addlib; /* target of ADDLIB. */ 103 const char *posarg; /* position arg for modifiers -a, -b. */ 104 char mode; /* program mode */ 105 int options; /* command line options */ 106 FILE *output; /* default output stream */ 107 108 const char *progname; /* program name */ 109 int argc; 110 char **argv; 111 112 dev_t ar_dev; /* archive device. */ 113 ino_t ar_ino; /* archive inode. */ 114 115 /* 116 * Fields for the archive string table. 117 */ 118 char *as; /* buffer for archive string table. */ 119 size_t as_sz; /* current size of as table. */ 120 size_t as_cap; /* capacity of as table buffer. */ 121 122 /* 123 * Fields for the archive symbol table. 124 */ 125 uint32_t s_cnt; /* current number of symbols. */ 126 uint32_t *s_so; /* symbol offset table. */ 127 size_t s_so_cap; /* capacity of so table buffer. */ 128 char *s_sn; /* symbol name table */ 129 size_t s_sn_cap; /* capacity of sn table buffer. */ 130 size_t s_sn_sz; /* current size of sn table. */ 131 /* Current member's offset (relative to the end of pseudo members.) */ 132 off_t rela_off; 133 134 TAILQ_HEAD(, ar_obj) v_obj; /* object(member) list */ 135 }; 136 137 void ar_mode_script(struct bsdar *ar); 138 void ar_read_archive(struct bsdar *_ar, int _mode); 139 void ar_write_archive(struct bsdar *_ar, int _mode); 140 void bsdar_errc(struct bsdar *, int _code, const char *fmt, ...); 141 int bsdar_is_pseudomember(struct bsdar *_ar, const char *_name); 142 const char *bsdar_strmode(mode_t m); 143 void bsdar_warnc(struct bsdar *, int _code, const char *fmt, ...); 144