Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 1 | /* Interface for libelf. |
Roland McGrath | 6fd3cd1 | 2010-01-07 19:41:04 -0800 | [diff] [blame] | 2 | Copyright (C) 1998-2010 Red Hat, Inc. |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 3 | This file is part of elfutils. |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 4 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 5 | This file is free software; you can redistribute it and/or modify |
| 6 | it under the terms of either |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 7 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 8 | * the GNU Lesser General Public License as published by the Free |
| 9 | Software Foundation; either version 3 of the License, or (at |
| 10 | your option) any later version |
| 11 | |
| 12 | or |
| 13 | |
| 14 | * the GNU General Public License as published by the Free |
| 15 | Software Foundation; either version 2 of the License, or (at |
| 16 | your option) any later version |
| 17 | |
| 18 | or both in parallel, as here. |
| 19 | |
| 20 | elfutils is distributed in the hope that it will be useful, but |
Ulrich Drepper | 361df7d | 2006-04-04 21:38:57 +0000 | [diff] [blame] | 21 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 23 | General Public License for more details. |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 24 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 25 | You should have received copies of the GNU General Public License and |
| 26 | the GNU Lesser General Public License along with this program. If |
| 27 | not, see <http://www.gnu.org/licenses/>. */ |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 28 | |
| 29 | #ifndef _LIBELF_H |
| 30 | #define _LIBELF_H 1 |
| 31 | |
| 32 | #include <sys/types.h> |
| 33 | |
| 34 | /* Get the ELF types. */ |
| 35 | #include <elf.h> |
| 36 | |
| 37 | |
| 38 | /* Known translation types. */ |
| 39 | typedef enum |
| 40 | { |
| 41 | ELF_T_BYTE, /* unsigned char */ |
| 42 | ELF_T_ADDR, /* Elf32_Addr, Elf64_Addr, ... */ |
| 43 | ELF_T_DYN, /* Dynamic section record. */ |
| 44 | ELF_T_EHDR, /* ELF header. */ |
| 45 | ELF_T_HALF, /* Elf32_Half, Elf64_Half, ... */ |
| 46 | ELF_T_OFF, /* Elf32_Off, Elf64_Off, ... */ |
| 47 | ELF_T_PHDR, /* Program header. */ |
| 48 | ELF_T_RELA, /* Relocation entry with addend. */ |
| 49 | ELF_T_REL, /* Relocation entry. */ |
| 50 | ELF_T_SHDR, /* Section header. */ |
| 51 | ELF_T_SWORD, /* Elf32_Sword, Elf64_Sword, ... */ |
| 52 | ELF_T_SYM, /* Symbol record. */ |
| 53 | ELF_T_WORD, /* Elf32_Word, Elf64_Word, ... */ |
| 54 | ELF_T_XWORD, /* Elf32_Xword, Elf64_Xword, ... */ |
| 55 | ELF_T_SXWORD, /* Elf32_Sxword, Elf64_Sxword, ... */ |
| 56 | ELF_T_VDEF, /* Elf32_Verdef, Elf64_Verdef, ... */ |
| 57 | ELF_T_VDAUX, /* Elf32_Verdaux, Elf64_Verdaux, ... */ |
| 58 | ELF_T_VNEED, /* Elf32_Verneed, Elf64_Verneed, ... */ |
| 59 | ELF_T_VNAUX, /* Elf32_Vernaux, Elf64_Vernaux, ... */ |
| 60 | ELF_T_NHDR, /* Elf32_Nhdr, Elf64_Nhdr, ... */ |
| 61 | ELF_T_SYMINFO, /* Elf32_Syminfo, Elf64_Syminfo, ... */ |
| 62 | ELF_T_MOVE, /* Elf32_Move, Elf64_Move, ... */ |
| 63 | ELF_T_LIB, /* Elf32_Lib, Elf64_Lib, ... */ |
Ulrich Drepper | 8ae5814 | 2006-07-12 05:22:32 +0000 | [diff] [blame] | 64 | ELF_T_GNUHASH, /* GNU-style hash section. */ |
Roland McGrath | cb6d865 | 2007-08-23 08:10:54 +0000 | [diff] [blame] | 65 | ELF_T_AUXV, /* Elf32_auxv_t, Elf64_auxv_t, ... */ |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 66 | /* Keep this the last entry. */ |
| 67 | ELF_T_NUM |
| 68 | } Elf_Type; |
| 69 | |
| 70 | /* Descriptor for data to be converted to or from memory format. */ |
| 71 | typedef struct |
| 72 | { |
| 73 | void *d_buf; /* Pointer to the actual data. */ |
| 74 | Elf_Type d_type; /* Type of this piece of data. */ |
| 75 | unsigned int d_version; /* ELF version. */ |
| 76 | size_t d_size; /* Size in bytes. */ |
Roland McGrath | 970a166 | 2008-12-11 21:12:48 -0800 | [diff] [blame] | 77 | loff_t d_off; /* Offset into section. */ |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 78 | size_t d_align; /* Alignment in section. */ |
| 79 | } Elf_Data; |
| 80 | |
| 81 | |
| 82 | /* Commands for `...'. */ |
| 83 | typedef enum |
| 84 | { |
| 85 | ELF_C_NULL, /* Nothing, terminate, or compute only. */ |
| 86 | ELF_C_READ, /* Read .. */ |
| 87 | ELF_C_RDWR, /* Read and write .. */ |
| 88 | ELF_C_WRITE, /* Write .. */ |
| 89 | ELF_C_CLR, /* Clear flag. */ |
| 90 | ELF_C_SET, /* Set flag. */ |
| 91 | ELF_C_FDDONE, /* Signal that file descriptor will not be |
| 92 | used anymore. */ |
| 93 | ELF_C_FDREAD, /* Read rest of data so that file descriptor |
| 94 | is not used anymore. */ |
| 95 | /* The following are extensions. */ |
| 96 | ELF_C_READ_MMAP, /* Read, but mmap the file if possible. */ |
| 97 | ELF_C_RDWR_MMAP, /* Read and write, with mmap. */ |
| 98 | ELF_C_WRITE_MMAP, /* Write, with mmap. */ |
| 99 | ELF_C_READ_MMAP_PRIVATE, /* Read, but memory is writable, results are |
| 100 | not written to the file. */ |
| 101 | ELF_C_EMPTY, /* Copy basic file data but not the content. */ |
| 102 | /* Keep this the last entry. */ |
| 103 | ELF_C_NUM |
| 104 | } Elf_Cmd; |
| 105 | |
| 106 | |
| 107 | /* Flags for the ELF structures. */ |
| 108 | enum |
| 109 | { |
| 110 | ELF_F_DIRTY = 0x1, |
| 111 | #define ELF_F_DIRTY ELF_F_DIRTY |
| 112 | ELF_F_LAYOUT = 0x4, |
| 113 | #define ELF_F_LAYOUT ELF_F_LAYOUT |
| 114 | ELF_F_PERMISSIVE = 0x8 |
| 115 | #define ELF_F_PERMISSIVE ELF_F_PERMISSIVE |
| 116 | }; |
| 117 | |
| 118 | |
| 119 | /* Identification values for recognized object files. */ |
| 120 | typedef enum |
| 121 | { |
| 122 | ELF_K_NONE, /* Unknown. */ |
| 123 | ELF_K_AR, /* Archive. */ |
| 124 | ELF_K_COFF, /* Stupid old COFF. */ |
| 125 | ELF_K_ELF, /* ELF file. */ |
| 126 | /* Keep this the last entry. */ |
| 127 | ELF_K_NUM |
| 128 | } Elf_Kind; |
| 129 | |
| 130 | |
| 131 | /* Archive member header. */ |
| 132 | typedef struct |
| 133 | { |
| 134 | char *ar_name; /* Name of archive member. */ |
| 135 | time_t ar_date; /* File date. */ |
| 136 | uid_t ar_uid; /* User ID. */ |
| 137 | gid_t ar_gid; /* Group ID. */ |
| 138 | mode_t ar_mode; /* File mode. */ |
Roland McGrath | 1a2e8f4 | 2007-12-15 23:39:34 +0000 | [diff] [blame] | 139 | loff_t ar_size; /* File size. */ |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 140 | char *ar_rawname; /* Original name of archive member. */ |
| 141 | } Elf_Arhdr; |
| 142 | |
| 143 | |
| 144 | /* Archive symbol table entry. */ |
| 145 | typedef struct |
| 146 | { |
| 147 | char *as_name; /* Symbol name. */ |
| 148 | size_t as_off; /* Offset for this file in the archive. */ |
| 149 | unsigned long int as_hash; /* Hash value of the name. */ |
| 150 | } Elf_Arsym; |
| 151 | |
| 152 | |
| 153 | /* Descriptor for the ELF file. */ |
| 154 | typedef struct Elf Elf; |
| 155 | |
| 156 | /* Descriptor for ELF file section. */ |
| 157 | typedef struct Elf_Scn Elf_Scn; |
| 158 | |
| 159 | |
| 160 | #ifdef __cplusplus |
| 161 | extern "C" { |
| 162 | #endif |
| 163 | |
| 164 | /* Return descriptor for ELF file to work according to CMD. */ |
| 165 | extern Elf *elf_begin (int __fildes, Elf_Cmd __cmd, Elf *__ref); |
| 166 | |
| 167 | /* Create a clone of an existing ELF descriptor. */ |
| 168 | extern Elf *elf_clone (Elf *__elf, Elf_Cmd __cmd); |
| 169 | |
| 170 | /* Create descriptor for memory region. */ |
| 171 | extern Elf *elf_memory (char *__image, size_t __size); |
| 172 | |
| 173 | /* Advance archive descriptor to next element. */ |
| 174 | extern Elf_Cmd elf_next (Elf *__elf); |
| 175 | |
| 176 | /* Free resources allocated for ELF. */ |
| 177 | extern int elf_end (Elf *__elf); |
| 178 | |
| 179 | /* Update ELF descriptor and write file to disk. */ |
Roland McGrath | 1a2e8f4 | 2007-12-15 23:39:34 +0000 | [diff] [blame] | 180 | extern loff_t elf_update (Elf *__elf, Elf_Cmd __cmd); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 181 | |
| 182 | /* Determine what kind of file is associated with ELF. */ |
| 183 | extern Elf_Kind elf_kind (Elf *__elf) __attribute__ ((__pure__)); |
| 184 | |
| 185 | /* Get the base offset for an object file. */ |
Roland McGrath | 1a2e8f4 | 2007-12-15 23:39:34 +0000 | [diff] [blame] | 186 | extern loff_t elf_getbase (Elf *__elf); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 187 | |
| 188 | |
| 189 | /* Retrieve file identification data. */ |
Roland McGrath | 1d3a64d | 2006-06-15 22:38:05 +0000 | [diff] [blame] | 190 | extern char *elf_getident (Elf *__elf, size_t *__nbytes); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 191 | |
| 192 | /* Retrieve class-dependent object file header. */ |
| 193 | extern Elf32_Ehdr *elf32_getehdr (Elf *__elf); |
| 194 | /* Similar but this time the binary calls is ELFCLASS64. */ |
| 195 | extern Elf64_Ehdr *elf64_getehdr (Elf *__elf); |
| 196 | |
| 197 | /* Create ELF header if none exists. */ |
| 198 | extern Elf32_Ehdr *elf32_newehdr (Elf *__elf); |
| 199 | /* Similar but this time the binary calls is ELFCLASS64. */ |
| 200 | extern Elf64_Ehdr *elf64_newehdr (Elf *__elf); |
| 201 | |
Roland McGrath | 6fd3cd1 | 2010-01-07 19:41:04 -0800 | [diff] [blame] | 202 | /* Get the number of program headers in the ELF file. If the file uses |
| 203 | more headers than can be represented in the e_phnum field of the ELF |
| 204 | header the information from the sh_info field in the zeroth section |
| 205 | header is used. */ |
| 206 | extern int elf_getphdrnum (Elf *__elf, size_t *__dst); |
| 207 | |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 208 | /* Retrieve class-dependent program header table. */ |
| 209 | extern Elf32_Phdr *elf32_getphdr (Elf *__elf); |
| 210 | /* Similar but this time the binary calls is ELFCLASS64. */ |
| 211 | extern Elf64_Phdr *elf64_getphdr (Elf *__elf); |
| 212 | |
| 213 | /* Create ELF program header. */ |
| 214 | extern Elf32_Phdr *elf32_newphdr (Elf *__elf, size_t __cnt); |
| 215 | /* Similar but this time the binary calls is ELFCLASS64. */ |
| 216 | extern Elf64_Phdr *elf64_newphdr (Elf *__elf, size_t __cnt); |
| 217 | |
| 218 | |
| 219 | /* Get section at INDEX. */ |
| 220 | extern Elf_Scn *elf_getscn (Elf *__elf, size_t __index); |
| 221 | |
Ulrich Drepper | 41de488 | 2005-08-03 00:02:56 +0000 | [diff] [blame] | 222 | /* Get section at OFFSET. */ |
| 223 | extern Elf_Scn *elf32_offscn (Elf *__elf, Elf32_Off __offset); |
| 224 | /* Similar bug this time the binary calls is ELFCLASS64. */ |
| 225 | extern Elf_Scn *elf64_offscn (Elf *__elf, Elf64_Off __offset); |
| 226 | |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 227 | /* Get index of section. */ |
| 228 | extern size_t elf_ndxscn (Elf_Scn *__scn); |
| 229 | |
| 230 | /* Get section with next section index. */ |
| 231 | extern Elf_Scn *elf_nextscn (Elf *__elf, Elf_Scn *__scn); |
| 232 | |
| 233 | /* Create a new section and append it at the end of the table. */ |
| 234 | extern Elf_Scn *elf_newscn (Elf *__elf); |
| 235 | |
Ulrich Drepper | 3cbdd38 | 2008-01-02 17:44:39 +0000 | [diff] [blame] | 236 | /* Get the section index of the extended section index table for the |
| 237 | given symbol table. */ |
| 238 | extern int elf_scnshndx (Elf_Scn *__scn); |
| 239 | |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 240 | /* Get the number of sections in the ELF file. If the file uses more |
| 241 | sections than can be represented in the e_shnum field of the ELF |
| 242 | header the information from the sh_size field in the zeroth section |
| 243 | header is used. */ |
Ulrich Drepper | f189493 | 2009-06-13 15:55:42 -0700 | [diff] [blame] | 244 | extern int elf_getshdrnum (Elf *__elf, size_t *__dst); |
| 245 | /* Sun messed up the implementation of 'elf_getshnum' in their implementation. |
| 246 | It was agreed to make the same functionality available under a different |
| 247 | name and obsolete the old name. */ |
| 248 | extern int elf_getshnum (Elf *__elf, size_t *__dst) |
| 249 | __attribute__ ((__deprecated__)); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 250 | |
| 251 | |
| 252 | /* Get the section index of the section header string table in the ELF |
| 253 | file. If the index cannot be represented in the e_shnum field of |
| 254 | the ELF header the information from the sh_link field in the zeroth |
| 255 | section header is used. */ |
Ulrich Drepper | f189493 | 2009-06-13 15:55:42 -0700 | [diff] [blame] | 256 | extern int elf_getshdrstrndx (Elf *__elf, size_t *__dst); |
| 257 | /* Sun messed up the implementation of 'elf_getshnum' in their implementation. |
| 258 | It was agreed to make the same functionality available under a different |
| 259 | name and obsolete the old name. */ |
| 260 | extern int elf_getshstrndx (Elf *__elf, size_t *__dst) |
| 261 | __attribute__ ((__deprecated__)); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 262 | |
| 263 | |
| 264 | /* Retrieve section header of ELFCLASS32 binary. */ |
| 265 | extern Elf32_Shdr *elf32_getshdr (Elf_Scn *__scn); |
| 266 | /* Similar for ELFCLASS64. */ |
| 267 | extern Elf64_Shdr *elf64_getshdr (Elf_Scn *__scn); |
| 268 | |
| 269 | |
| 270 | /* Set or clear flags for ELF file. */ |
| 271 | extern unsigned int elf_flagelf (Elf *__elf, Elf_Cmd __cmd, |
| 272 | unsigned int __flags); |
| 273 | /* Similarly for the ELF header. */ |
| 274 | extern unsigned int elf_flagehdr (Elf *__elf, Elf_Cmd __cmd, |
| 275 | unsigned int __flags); |
| 276 | /* Similarly for the ELF program header. */ |
| 277 | extern unsigned int elf_flagphdr (Elf *__elf, Elf_Cmd __cmd, |
| 278 | unsigned int __flags); |
| 279 | /* Similarly for the given ELF section. */ |
| 280 | extern unsigned int elf_flagscn (Elf_Scn *__scn, Elf_Cmd __cmd, |
| 281 | unsigned int __flags); |
| 282 | /* Similarly for the given ELF data. */ |
| 283 | extern unsigned int elf_flagdata (Elf_Data *__data, Elf_Cmd __cmd, |
| 284 | unsigned int __flags); |
| 285 | /* Similarly for the given ELF section header. */ |
| 286 | extern unsigned int elf_flagshdr (Elf_Scn *__scn, Elf_Cmd __cmd, |
| 287 | unsigned int __flags); |
| 288 | |
| 289 | |
| 290 | /* Get data from section while translating from file representation |
| 291 | to memory representation. */ |
| 292 | extern Elf_Data *elf_getdata (Elf_Scn *__scn, Elf_Data *__data); |
| 293 | |
| 294 | /* Get uninterpreted section content. */ |
| 295 | extern Elf_Data *elf_rawdata (Elf_Scn *__scn, Elf_Data *__data); |
| 296 | |
| 297 | /* Create new data descriptor for section SCN. */ |
| 298 | extern Elf_Data *elf_newdata (Elf_Scn *__scn); |
| 299 | |
Roland McGrath | 59ea7f3 | 2007-10-04 08:50:09 +0000 | [diff] [blame] | 300 | /* Get data translated from a chunk of the file contents as section data |
| 301 | would be for TYPE. The resulting Elf_Data pointer is valid until |
| 302 | elf_end (ELF) is called. */ |
| 303 | extern Elf_Data *elf_getdata_rawchunk (Elf *__elf, |
Roland McGrath | 1a2e8f4 | 2007-12-15 23:39:34 +0000 | [diff] [blame] | 304 | loff_t __offset, size_t __size, |
Roland McGrath | 59ea7f3 | 2007-10-04 08:50:09 +0000 | [diff] [blame] | 305 | Elf_Type __type); |
| 306 | |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 307 | |
| 308 | /* Return pointer to string at OFFSET in section INDEX. */ |
| 309 | extern char *elf_strptr (Elf *__elf, size_t __index, size_t __offset); |
| 310 | |
| 311 | |
| 312 | /* Return header of archive. */ |
| 313 | extern Elf_Arhdr *elf_getarhdr (Elf *__elf); |
| 314 | |
Ulrich Drepper | 5d83229 | 2005-08-15 21:36:27 +0000 | [diff] [blame] | 315 | /* Return offset in archive for current file ELF. */ |
Roland McGrath | 1a2e8f4 | 2007-12-15 23:39:34 +0000 | [diff] [blame] | 316 | extern loff_t elf_getaroff (Elf *__elf); |
Ulrich Drepper | 5d83229 | 2005-08-15 21:36:27 +0000 | [diff] [blame] | 317 | |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 318 | /* Select archive element at OFFSET. */ |
| 319 | extern size_t elf_rand (Elf *__elf, size_t __offset); |
| 320 | |
Roland McGrath | 1d3a64d | 2006-06-15 22:38:05 +0000 | [diff] [blame] | 321 | /* Get symbol table of archive. */ |
| 322 | extern Elf_Arsym *elf_getarsym (Elf *__elf, size_t *__narsyms); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 323 | |
| 324 | |
| 325 | /* Control ELF descriptor. */ |
| 326 | extern int elf_cntl (Elf *__elf, Elf_Cmd __cmd); |
| 327 | |
| 328 | /* Retrieve uninterpreted file contents. */ |
Roland McGrath | 1d3a64d | 2006-06-15 22:38:05 +0000 | [diff] [blame] | 329 | extern char *elf_rawfile (Elf *__elf, size_t *__nbytes); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 330 | |
| 331 | |
| 332 | /* Return size of array of COUNT elements of the type denoted by TYPE |
| 333 | in the external representation. The binary class is taken from ELF. |
| 334 | The result is based on version VERSION of the ELF standard. */ |
| 335 | extern size_t elf32_fsize (Elf_Type __type, size_t __count, |
| 336 | unsigned int __version) |
| 337 | __attribute__ ((__const__)); |
| 338 | /* Similar but this time the binary calls is ELFCLASS64. */ |
| 339 | extern size_t elf64_fsize (Elf_Type __type, size_t __count, |
| 340 | unsigned int __version) |
| 341 | __attribute__ ((__const__)); |
| 342 | |
| 343 | |
| 344 | /* Convert data structure from the representation in the file represented |
| 345 | by ELF to their memory representation. */ |
| 346 | extern Elf_Data *elf32_xlatetom (Elf_Data *__dest, const Elf_Data *__src, |
| 347 | unsigned int __encode); |
| 348 | /* Same for 64 bit class. */ |
| 349 | extern Elf_Data *elf64_xlatetom (Elf_Data *__dest, const Elf_Data *__src, |
| 350 | unsigned int __encode); |
| 351 | |
| 352 | /* Convert data structure from to the representation in memory |
| 353 | represented by ELF file representation. */ |
| 354 | extern Elf_Data *elf32_xlatetof (Elf_Data *__dest, const Elf_Data *__src, |
| 355 | unsigned int __encode); |
| 356 | /* Same for 64 bit class. */ |
| 357 | extern Elf_Data *elf64_xlatetof (Elf_Data *__dest, const Elf_Data *__src, |
| 358 | unsigned int __encode); |
| 359 | |
| 360 | |
| 361 | /* Return error code of last failing function call. This value is kept |
| 362 | separately for each thread. */ |
| 363 | extern int elf_errno (void); |
| 364 | |
| 365 | /* Return error string for ERROR. If ERROR is zero, return error string |
| 366 | for most recent error or NULL is none occurred. If ERROR is -1 the |
| 367 | behaviour is similar to the last case except that not NULL but a legal |
| 368 | string is returned. */ |
| 369 | extern const char *elf_errmsg (int __error); |
| 370 | |
| 371 | |
| 372 | /* Coordinate ELF library and application versions. */ |
| 373 | extern unsigned int elf_version (unsigned int __version); |
| 374 | |
| 375 | /* Set fill bytes used to fill holes in data structures. */ |
| 376 | extern void elf_fill (int __fill); |
| 377 | |
| 378 | /* Compute hash value. */ |
| 379 | extern unsigned long int elf_hash (const char *__string) |
| 380 | __attribute__ ((__pure__)); |
| 381 | |
Ulrich Drepper | 28ed895 | 2006-07-07 03:43:47 +0000 | [diff] [blame] | 382 | /* Compute hash value using the GNU-specific hash function. */ |
| 383 | extern unsigned long int elf_gnu_hash (const char *__string) |
| 384 | __attribute__ ((__pure__)); |
| 385 | |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 386 | |
| 387 | /* Compute simple checksum from permanent parts of the ELF file. */ |
| 388 | extern long int elf32_checksum (Elf *__elf); |
| 389 | /* Similar but this time the binary calls is ELFCLASS64. */ |
| 390 | extern long int elf64_checksum (Elf *__elf); |
| 391 | |
| 392 | #ifdef __cplusplus |
| 393 | } |
| 394 | #endif |
| 395 | |
| 396 | #endif /* libelf.h */ |