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309 lines
8.4 KiB
309 lines
8.4 KiB
/* Common core note type descriptions for Linux. |
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Copyright (C) 2007-2010 Red Hat, Inc. |
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Copyright (C) H.J. Lu <hjl.tools@gmail.com>, 2015. |
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This file is part of elfutils. |
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This file is free software; you can redistribute it and/or modify |
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it under the terms of either |
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* the GNU Lesser General Public License as published by the Free |
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Software Foundation; either version 3 of the License, or (at |
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your option) any later version |
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or |
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* the GNU General Public License as published by the Free |
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Software Foundation; either version 2 of the License, or (at |
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your option) any later version |
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or both in parallel, as here. |
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elfutils is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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You should have received copies of the GNU General Public License and |
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the GNU Lesser General Public License along with this program. If |
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not, see <http://www.gnu.org/licenses/>. */ |
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#include <string.h> |
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/* The including CPU_corenote.c file provides prstatus_regs and |
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defines macros ULONG, [PUG]ID_T, and ALIGN_*, TYPE_*. |
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Here we describe the common layout used in <linux/elfcore.h>. */ |
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#define CHAR int8_t |
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#define ALIGN_CHAR 1 |
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#define TYPE_CHAR ELF_T_BYTE |
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#define SHORT uint16_t |
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#define ALIGN_SHORT 2 |
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#define TYPE_SHORT ELF_T_HALF |
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#define INT int32_t |
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#define ALIGN_INT 4 |
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#define TYPE_INT ELF_T_SWORD |
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#ifndef PR_REG |
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# define PR_REG ULONG |
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#endif |
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#ifndef ALIGN_PR_REG |
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# define ALIGN_PR_REG ALIGN_ULONG |
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#endif |
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#ifndef PRPSINFO_UID_T |
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# define PRPSINFO_UID_T UID_T |
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# define ALIGN_PRPSINFO_UID_T ALIGN_UID_T |
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# define TYPE_PRPSINFO_UID_T TYPE_UID_T |
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#endif |
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#ifndef PRPSINFO_GID_T |
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# define PRPSINFO_GID_T GID_T |
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# define ALIGN_PRPSINFO_GID_T ALIGN_GID_T |
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# define TYPE_PRPSINFO_GID_T TYPE_GID_T |
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#endif |
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#define FIELD(type, name) type name __attribute__ ((aligned (ALIGN_##type))) |
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struct EBLHOOK(siginfo) |
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{ |
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FIELD (INT, si_signo); |
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FIELD (INT, si_code); |
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FIELD (INT, si_errno); |
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}; |
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struct EBLHOOK(timeval) |
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{ |
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FIELD (ULONG, tv_sec); |
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FIELD (ULONG, tv_usec); |
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}; |
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/* On sparc64, tv_usec (suseconds_t) is actually 32 bits with 32 bits padding. |
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The 'T'|0x80 value for .format indicates this as a special kludge. */ |
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#if SUSECONDS_HALF |
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# define TIMEVAL_FIELD(name) FIELD (time, ULONG, name, 'T'|0x80, .count = 2) |
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#else |
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# define TIMEVAL_FIELD(name) FIELD (time, ULONG, name, 'T', .count = 2) |
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#endif |
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struct EBLHOOK(prstatus) |
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{ |
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struct EBLHOOK(siginfo) pr_info; |
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FIELD (SHORT, pr_cursig); |
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FIELD (ULONG, pr_sigpend); |
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FIELD (ULONG, pr_sighold); |
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FIELD (PID_T, pr_pid); |
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FIELD (PID_T, pr_ppid); |
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FIELD (PID_T, pr_pgrp); |
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FIELD (PID_T, pr_sid); |
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struct EBLHOOK(timeval) pr_utime; |
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struct EBLHOOK(timeval) pr_stime; |
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struct EBLHOOK(timeval) pr_cutime; |
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struct EBLHOOK(timeval) pr_cstime; |
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struct |
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{ |
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FIELD (PR_REG, pr_reg[PRSTATUS_REGS_SIZE / sizeof (PR_REG)]); |
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} |
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#ifdef ALIGN_PR_REG |
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__attribute__ ((aligned (ALIGN_PR_REG))) |
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#endif |
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; |
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FIELD (INT, pr_fpvalid); |
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}; |
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#define FNAMESZ 16 |
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#define PRARGSZ 80 |
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struct EBLHOOK(prpsinfo) |
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{ |
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FIELD (CHAR, pr_state); |
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FIELD (CHAR, pr_sname); |
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FIELD (CHAR, pr_zomb); |
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FIELD (CHAR, pr_nice); |
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FIELD (ULONG, pr_flag); |
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FIELD (PRPSINFO_UID_T, pr_uid); |
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FIELD (PRPSINFO_GID_T, pr_gid); |
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FIELD (PID_T, pr_pid); |
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FIELD (PID_T, pr_ppid); |
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FIELD (PID_T, pr_pgrp); |
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FIELD (PID_T, pr_sid); |
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FIELD (CHAR, pr_fname[FNAMESZ]); |
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FIELD (CHAR, pr_psargs[PRARGSZ]); |
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}; |
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#undef FIELD |
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#define FIELD(igroup, itype, item, fmt, ...) \ |
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{ \ |
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.name = #item, \ |
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.group = #igroup, \ |
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.offset = offsetof (struct EBLHOOK(prstatus), pr_##item), \ |
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.type = TYPE_##itype, \ |
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.format = fmt, \ |
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__VA_ARGS__ \ |
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} |
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static const Ebl_Core_Item prstatus_items[] = |
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{ |
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FIELD (signal, INT, info.si_signo, 'd'), |
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FIELD (signal, INT, info.si_code, 'd'), |
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FIELD (signal, INT, info.si_errno, 'd'), |
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FIELD (signal, SHORT, cursig, 'd'), |
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/* Use different group name for a newline delimiter. */ |
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FIELD (signal2, ULONG, sigpend, 'B'), |
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FIELD (signal3, ULONG, sighold, 'B'), |
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FIELD (identity, PID_T, pid, 'd', .thread_identifier = true), |
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FIELD (identity, PID_T, ppid, 'd'), |
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FIELD (identity, PID_T, pgrp, 'd'), |
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FIELD (identity, PID_T, sid, 'd'), |
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TIMEVAL_FIELD (utime), |
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TIMEVAL_FIELD (stime), |
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TIMEVAL_FIELD (cutime), |
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TIMEVAL_FIELD (cstime), |
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#ifdef PRSTATUS_REGSET_ITEMS |
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PRSTATUS_REGSET_ITEMS, |
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#endif |
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FIELD (register, INT, fpvalid, 'd'), |
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}; |
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#undef FIELD |
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#define FIELD(igroup, itype, item, fmt, ...) \ |
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{ \ |
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.name = #item, \ |
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.group = #igroup, \ |
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.offset = offsetof (struct EBLHOOK(prpsinfo), pr_##item), \ |
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.type = TYPE_##itype, \ |
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.format = fmt, \ |
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__VA_ARGS__ \ |
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} |
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static const Ebl_Core_Item prpsinfo_items[] = |
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{ |
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FIELD (state, CHAR, state, 'd'), |
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FIELD (state, CHAR, sname, 'c'), |
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FIELD (state, CHAR, zomb, 'd'), |
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FIELD (state, CHAR, nice, 'd'), |
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FIELD (state, ULONG, flag, 'x'), |
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FIELD (identity, PRPSINFO_UID_T, uid, 'd'), |
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FIELD (identity, PRPSINFO_GID_T, gid, 'd'), |
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FIELD (identity, PID_T, pid, 'd'), |
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FIELD (identity, PID_T, ppid, 'd'), |
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FIELD (identity, PID_T, pgrp, 'd'), |
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FIELD (identity, PID_T, sid, 'd'), |
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FIELD (command, CHAR, fname, 's', .count = FNAMESZ), |
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FIELD (command, CHAR, psargs, 's', .count = PRARGSZ), |
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}; |
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static const Ebl_Core_Item vmcoreinfo_items[] = |
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{ |
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{ |
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.type = ELF_T_BYTE, .format = '\n' |
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} |
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}; |
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#undef FIELD |
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int |
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EBLHOOK(core_note) (const GElf_Nhdr *nhdr, const char *name, |
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GElf_Word *regs_offset, size_t *nregloc, |
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const Ebl_Register_Location **reglocs, |
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size_t *nitems, const Ebl_Core_Item **items) |
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{ |
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switch (nhdr->n_namesz) |
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{ |
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case sizeof "CORE" - 1: /* Buggy old Linux kernels. */ |
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if (memcmp (name, "CORE", nhdr->n_namesz) == 0) |
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break; |
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return 0; |
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case sizeof "CORE": |
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if (memcmp (name, "CORE", nhdr->n_namesz) == 0) |
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break; |
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/* Buggy old Linux kernels didn't terminate "LINUX". |
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Fall through. */ |
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case sizeof "LINUX": |
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if (memcmp (name, "LINUX", nhdr->n_namesz) == 0) |
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break; |
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return 0; |
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case sizeof "VMCOREINFO": |
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if (nhdr->n_type != 0 |
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|| memcmp (name, "VMCOREINFO", sizeof "VMCOREINFO") != 0) |
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return 0; |
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*regs_offset = 0; |
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*nregloc = 0; |
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*nitems = 1; |
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*items = vmcoreinfo_items; |
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return 1; |
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default: |
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return 0; |
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} |
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switch (nhdr->n_type) |
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{ |
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case NT_PRSTATUS: |
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if (nhdr->n_descsz != sizeof (struct EBLHOOK(prstatus))) |
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return 0; |
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*regs_offset = offsetof (struct EBLHOOK(prstatus), pr_reg); |
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*nregloc = sizeof prstatus_regs / sizeof prstatus_regs[0]; |
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*reglocs = prstatus_regs; |
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*nitems = sizeof prstatus_items / sizeof prstatus_items[0]; |
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*items = prstatus_items; |
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return 1; |
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case NT_PRPSINFO: |
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if (nhdr->n_descsz != sizeof (struct EBLHOOK(prpsinfo))) |
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return 0; |
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*regs_offset = 0; |
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*nregloc = 0; |
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*reglocs = NULL; |
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*nitems = sizeof prpsinfo_items / sizeof prpsinfo_items[0]; |
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*items = prpsinfo_items; |
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return 1; |
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#define EXTRA_REGSET(type, size, table) \ |
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case type: \ |
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if (nhdr->n_descsz != size) \ |
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return 0; \ |
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*regs_offset = 0; \ |
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*nregloc = sizeof table / sizeof table[0]; \ |
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*reglocs = table; \ |
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*nitems = 0; \ |
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*items = NULL; \ |
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return 1; |
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#define EXTRA_REGSET_ITEMS(type, size, table, extra_items) \ |
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case type: \ |
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if (nhdr->n_descsz != size) \ |
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return 0; \ |
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*regs_offset = 0; \ |
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*nregloc = sizeof table / sizeof table[0]; \ |
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*reglocs = table; \ |
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*nitems = sizeof extra_items / sizeof extra_items[0]; \ |
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*items = extra_items; \ |
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return 1; |
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#define EXTRA_ITEMS(type, size, extra_items) \ |
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case type: \ |
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if (nhdr->n_descsz != size) \ |
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return 0; \ |
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*regs_offset = 0; \ |
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*nregloc = 0; \ |
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*reglocs = NULL; \ |
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*nitems = sizeof extra_items / sizeof extra_items[0]; \ |
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*items = extra_items; \ |
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return 1; |
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#ifdef FPREGSET_SIZE |
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EXTRA_REGSET (NT_FPREGSET, FPREGSET_SIZE, fpregset_regs) |
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#endif |
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#ifdef EXTRA_NOTES |
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EXTRA_NOTES |
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#endif |
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} |
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return 0; |
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}
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