Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1 | /* Common core note type descriptions for Linux. |
| 2 | Copyright (C) 2007-2010 Red Hat, Inc. |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3 | This file is part of elfutils. |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5 | This file is free software; you can redistribute it and/or modify |
| 6 | it under the terms of either |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [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 |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [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. |
| 24 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [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/>. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 28 | |
| 29 | #include <string.h> |
| 30 | |
| 31 | /* The including CPU_corenote.c file provides prstatus_regs and |
| 32 | defines macros ULONG, [PUG]ID_T, and ALIGN_*, TYPE_*. |
| 33 | |
| 34 | Here we describe the common layout used in <linux/elfcore.h>. */ |
| 35 | |
| 36 | #define CHAR int8_t |
| 37 | #define ALIGN_CHAR 1 |
| 38 | #define TYPE_CHAR ELF_T_BYTE |
| 39 | #define SHORT uint16_t |
| 40 | #define ALIGN_SHORT 2 |
| 41 | #define TYPE_SHORT ELF_T_HALF |
| 42 | #define INT int32_t |
| 43 | #define ALIGN_INT 4 |
| 44 | #define TYPE_INT ELF_T_SWORD |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 45 | #ifndef ALIGN_PR_REG |
| 46 | # define ALIGN_PR_REG ALIGN_ULONG |
| 47 | #endif |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 48 | |
| 49 | #define FIELD(type, name) type name __attribute__ ((aligned (ALIGN_##type))) |
| 50 | |
| 51 | struct EBLHOOK(siginfo) |
| 52 | { |
| 53 | FIELD (INT, si_signo); |
| 54 | FIELD (INT, si_code); |
| 55 | FIELD (INT, si_errno); |
| 56 | }; |
| 57 | |
| 58 | struct EBLHOOK(timeval) |
| 59 | { |
| 60 | FIELD (ULONG, tv_sec); |
| 61 | FIELD (ULONG, tv_usec); |
| 62 | }; |
| 63 | |
| 64 | /* On sparc64, tv_usec (suseconds_t) is actually 32 bits with 32 bits padding. |
| 65 | The 'T'|0x80 value for .format indicates this as a special kludge. */ |
| 66 | #if SUSECONDS_HALF |
| 67 | # define TIMEVAL_FIELD(name) FIELD (time, ULONG, name, 'T'|0x80, .count = 2) |
| 68 | #else |
| 69 | # define TIMEVAL_FIELD(name) FIELD (time, ULONG, name, 'T', .count = 2) |
| 70 | #endif |
| 71 | |
| 72 | |
| 73 | struct EBLHOOK(prstatus) |
| 74 | { |
| 75 | struct EBLHOOK(siginfo) pr_info; |
| 76 | FIELD (SHORT, pr_cursig); |
| 77 | FIELD (ULONG, pr_sigpend); |
| 78 | FIELD (ULONG, pr_sighold); |
| 79 | FIELD (PID_T, pr_pid); |
| 80 | FIELD (PID_T, pr_ppid); |
| 81 | FIELD (PID_T, pr_pgrp); |
| 82 | FIELD (PID_T, pr_sid); |
| 83 | struct EBLHOOK(timeval) pr_utime; |
| 84 | struct EBLHOOK(timeval) pr_stime; |
| 85 | struct EBLHOOK(timeval) pr_cutime; |
| 86 | struct EBLHOOK(timeval) pr_cstime; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 87 | struct |
| 88 | { |
| 89 | FIELD (ULONG, pr_reg[PRSTATUS_REGS_SIZE / sizeof (ULONG)]); |
| 90 | } |
| 91 | #ifdef ALIGN_PR_REG |
| 92 | __attribute__ ((aligned (ALIGN_PR_REG))) |
| 93 | #endif |
| 94 | ; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 95 | FIELD (INT, pr_fpvalid); |
| 96 | }; |
| 97 | |
| 98 | #define FNAMESZ 16 |
| 99 | #define PRARGSZ 80 |
| 100 | |
| 101 | struct EBLHOOK(prpsinfo) |
| 102 | { |
| 103 | FIELD (CHAR, pr_state); |
| 104 | FIELD (CHAR, pr_sname); |
| 105 | FIELD (CHAR, pr_zomb); |
| 106 | FIELD (CHAR, pr_nice); |
| 107 | FIELD (ULONG, pr_flag); |
| 108 | FIELD (UID_T, pr_uid); |
| 109 | FIELD (GID_T, pr_gid); |
| 110 | FIELD (PID_T, pr_pid); |
| 111 | FIELD (PID_T, pr_ppid); |
| 112 | FIELD (PID_T, pr_pgrp); |
| 113 | FIELD (PID_T, pr_sid); |
| 114 | FIELD (CHAR, pr_fname[FNAMESZ]); |
| 115 | FIELD (CHAR, pr_psargs[PRARGSZ]); |
| 116 | }; |
| 117 | |
| 118 | #undef FIELD |
| 119 | |
| 120 | #define FIELD(igroup, itype, item, fmt, ...) \ |
| 121 | { \ |
| 122 | .name = #item, \ |
| 123 | .group = #igroup, \ |
| 124 | .offset = offsetof (struct EBLHOOK(prstatus), pr_##item), \ |
| 125 | .type = TYPE_##itype, \ |
| 126 | .format = fmt, \ |
| 127 | __VA_ARGS__ \ |
| 128 | } |
| 129 | |
| 130 | static const Ebl_Core_Item prstatus_items[] = |
| 131 | { |
| 132 | FIELD (signal, INT, info.si_signo, 'd'), |
| 133 | FIELD (signal, INT, info.si_code, 'd'), |
| 134 | FIELD (signal, INT, info.si_errno, 'd'), |
| 135 | FIELD (signal, SHORT, cursig, 'd'), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 136 | |
| 137 | /* Use different group name for a newline delimiter. */ |
| 138 | FIELD (signal2, ULONG, sigpend, 'B'), |
| 139 | FIELD (signal3, ULONG, sighold, 'B'), |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 140 | FIELD (identity, PID_T, pid, 'd', .thread_identifier = true), |
| 141 | FIELD (identity, PID_T, ppid, 'd'), |
| 142 | FIELD (identity, PID_T, pgrp, 'd'), |
| 143 | FIELD (identity, PID_T, sid, 'd'), |
| 144 | TIMEVAL_FIELD (utime), |
| 145 | TIMEVAL_FIELD (stime), |
| 146 | TIMEVAL_FIELD (cutime), |
| 147 | TIMEVAL_FIELD (cstime), |
| 148 | #ifdef PRSTATUS_REGSET_ITEMS |
| 149 | PRSTATUS_REGSET_ITEMS, |
| 150 | #endif |
| 151 | FIELD (register, INT, fpvalid, 'd'), |
| 152 | }; |
| 153 | |
| 154 | #undef FIELD |
| 155 | |
| 156 | #define FIELD(igroup, itype, item, fmt, ...) \ |
| 157 | { \ |
| 158 | .name = #item, \ |
| 159 | .group = #igroup, \ |
| 160 | .offset = offsetof (struct EBLHOOK(prpsinfo), pr_##item), \ |
| 161 | .type = TYPE_##itype, \ |
| 162 | .format = fmt, \ |
| 163 | __VA_ARGS__ \ |
| 164 | } |
| 165 | |
| 166 | static const Ebl_Core_Item prpsinfo_items[] = |
| 167 | { |
| 168 | FIELD (state, CHAR, state, 'd'), |
| 169 | FIELD (state, CHAR, sname, 'c'), |
| 170 | FIELD (state, CHAR, zomb, 'd'), |
| 171 | FIELD (state, CHAR, nice, 'd'), |
| 172 | FIELD (state, ULONG, flag, 'x'), |
| 173 | FIELD (identity, UID_T, uid, 'd'), |
| 174 | FIELD (identity, GID_T, gid, 'd'), |
| 175 | FIELD (identity, PID_T, pid, 'd'), |
| 176 | FIELD (identity, PID_T, ppid, 'd'), |
| 177 | FIELD (identity, PID_T, pgrp, 'd'), |
| 178 | FIELD (identity, PID_T, sid, 'd'), |
| 179 | FIELD (command, CHAR, fname, 's', .count = FNAMESZ), |
| 180 | FIELD (command, CHAR, psargs, 's', .count = PRARGSZ), |
| 181 | }; |
| 182 | |
| 183 | static const Ebl_Core_Item vmcoreinfo_items[] = |
| 184 | { |
| 185 | { |
| 186 | .type = ELF_T_BYTE, .format = '\n' |
| 187 | } |
| 188 | }; |
| 189 | |
| 190 | #undef FIELD |
| 191 | |
| 192 | int |
| 193 | EBLHOOK(core_note) (nhdr, name, regs_offset, nregloc, reglocs, nitems, items) |
| 194 | const GElf_Nhdr *nhdr; |
| 195 | const char *name; |
| 196 | GElf_Word *regs_offset; |
| 197 | size_t *nregloc; |
| 198 | const Ebl_Register_Location **reglocs; |
| 199 | size_t *nitems; |
| 200 | const Ebl_Core_Item **items; |
| 201 | { |
| 202 | switch (nhdr->n_namesz) |
| 203 | { |
| 204 | case sizeof "CORE" - 1: /* Buggy old Linux kernels. */ |
| 205 | if (memcmp (name, "CORE", nhdr->n_namesz) == 0) |
| 206 | break; |
| 207 | return 0; |
| 208 | |
| 209 | case sizeof "CORE": |
| 210 | if (memcmp (name, "CORE", nhdr->n_namesz) == 0) |
| 211 | break; |
| 212 | /* Buggy old Linux kernels didn't terminate "LINUX". |
| 213 | Fall through. */ |
| 214 | |
| 215 | case sizeof "LINUX": |
| 216 | if (memcmp (name, "LINUX", nhdr->n_namesz) == 0) |
| 217 | break; |
| 218 | return 0; |
| 219 | |
| 220 | case sizeof "VMCOREINFO": |
| 221 | if (nhdr->n_type != 0 |
| 222 | || memcmp (name, "VMCOREINFO", sizeof "VMCOREINFO") != 0) |
| 223 | return 0; |
| 224 | *regs_offset = 0; |
| 225 | *nregloc = 0; |
| 226 | *nitems = 1; |
| 227 | *items = vmcoreinfo_items; |
| 228 | return 1; |
| 229 | |
| 230 | default: |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | switch (nhdr->n_type) |
| 235 | { |
| 236 | case NT_PRSTATUS: |
| 237 | if (nhdr->n_descsz != sizeof (struct EBLHOOK(prstatus))) |
| 238 | return 0; |
| 239 | *regs_offset = offsetof (struct EBLHOOK(prstatus), pr_reg); |
| 240 | *nregloc = sizeof prstatus_regs / sizeof prstatus_regs[0]; |
| 241 | *reglocs = prstatus_regs; |
| 242 | *nitems = sizeof prstatus_items / sizeof prstatus_items[0]; |
| 243 | *items = prstatus_items; |
| 244 | return 1; |
| 245 | |
| 246 | case NT_PRPSINFO: |
| 247 | if (nhdr->n_descsz != sizeof (struct EBLHOOK(prpsinfo))) |
| 248 | return 0; |
| 249 | *regs_offset = 0; |
| 250 | *nregloc = 0; |
| 251 | *reglocs = NULL; |
| 252 | *nitems = sizeof prpsinfo_items / sizeof prpsinfo_items[0]; |
| 253 | *items = prpsinfo_items; |
| 254 | return 1; |
| 255 | |
| 256 | #define EXTRA_REGSET(type, size, table) \ |
| 257 | case type: \ |
| 258 | if (nhdr->n_descsz != size) \ |
| 259 | return 0; \ |
| 260 | *regs_offset = 0; \ |
| 261 | *nregloc = sizeof table / sizeof table[0]; \ |
| 262 | *reglocs = table; \ |
| 263 | *nitems = 0; \ |
| 264 | *items = NULL; \ |
| 265 | return 1; |
| 266 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 267 | #define EXTRA_REGSET_ITEMS(type, size, table, extra_items) \ |
| 268 | case type: \ |
| 269 | if (nhdr->n_descsz != size) \ |
| 270 | return 0; \ |
| 271 | *regs_offset = 0; \ |
| 272 | *nregloc = sizeof table / sizeof table[0]; \ |
| 273 | *reglocs = table; \ |
| 274 | *nitems = sizeof extra_items / sizeof extra_items[0]; \ |
| 275 | *items = extra_items; \ |
| 276 | return 1; |
| 277 | |
| 278 | #define EXTRA_ITEMS(type, size, extra_items) \ |
| 279 | case type: \ |
| 280 | if (nhdr->n_descsz != size) \ |
| 281 | return 0; \ |
| 282 | *regs_offset = 0; \ |
| 283 | *nregloc = 0; \ |
| 284 | *reglocs = NULL; \ |
| 285 | *nitems = sizeof extra_items / sizeof extra_items[0]; \ |
| 286 | *items = extra_items; \ |
| 287 | return 1; |
| 288 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 289 | #ifdef FPREGSET_SIZE |
| 290 | EXTRA_REGSET (NT_FPREGSET, FPREGSET_SIZE, fpregset_regs) |
| 291 | #endif |
| 292 | |
| 293 | #ifdef EXTRA_NOTES |
| 294 | EXTRA_NOTES |
| 295 | #endif |
| 296 | } |
| 297 | |
| 298 | return 0; |
| 299 | } |