Dmitry V. Levin
38a34c9349
Before this change, all files that exist since 20th century had copyright headers, while most files that appeared later didn't. This change fixes the inconsistency by adding missing copyright headers. It doesn't mean that copyright headers became maintained. In my view, git history provides much better information on this subject and is much more accurate than copyright headers.
245 lines
6.1 KiB
C
245 lines
6.1 KiB
C
/*
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* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
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* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
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* Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
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* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
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* Copyright (c) 2001 John Hughes <john@Calva.COM>
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* Copyright (c) 2013 Denys Vlasenko <vda.linux@googlemail.com>
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* Copyright (c) 2011-2015 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include DEF_MPERS_TYPE(siginfo_t)
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#include <signal.h>
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#include <linux/audit.h>
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#include MPERS_DEFS
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#ifndef IN_MPERS
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#include "printsiginfo.h"
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#endif
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#include "xlat/audit_arch.h"
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#include "xlat/sigbus_codes.h"
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#include "xlat/sigchld_codes.h"
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#include "xlat/sigfpe_codes.h"
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#include "xlat/sigill_codes.h"
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#include "xlat/siginfo_codes.h"
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#include "xlat/sigpoll_codes.h"
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#include "xlat/sigprof_codes.h"
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#include "xlat/sigsegv_codes.h"
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#include "xlat/sigsys_codes.h"
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#include "xlat/sigtrap_codes.h"
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#ifdef SIGEMT
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# include "xlat/sigemt_codes.h"
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#endif
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#ifndef SI_FROMUSER
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# define SI_FROMUSER(sip) ((sip)->si_code <= 0)
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#endif
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static void
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printsigsource(const siginfo_t *sip)
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{
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tprintf(", si_pid=%u, si_uid=%u",
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(unsigned int) sip->si_pid,
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(unsigned int) sip->si_uid);
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}
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static void
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printsigval(const siginfo_t *sip, bool verbose)
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{
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if (!verbose)
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tprints(", ...");
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else
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tprintf(", si_value={int=%d, ptr=%#lx}",
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sip->si_int,
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(unsigned long) sip->si_ptr);
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}
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static void
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print_si_code(int si_signo, int si_code)
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{
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const char *code = xlookup(siginfo_codes, si_code);
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if (!code) {
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switch (si_signo) {
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case SIGTRAP:
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code = xlookup(sigtrap_codes, si_code);
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break;
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case SIGCHLD:
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code = xlookup(sigchld_codes, si_code);
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break;
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case SIGPOLL:
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code = xlookup(sigpoll_codes, si_code);
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break;
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case SIGPROF:
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code = xlookup(sigprof_codes, si_code);
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break;
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case SIGILL:
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code = xlookup(sigill_codes, si_code);
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break;
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#ifdef SIGEMT
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case SIGEMT:
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code = xlookup(sigemt_codes, si_code);
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break;
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#endif
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case SIGFPE:
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code = xlookup(sigfpe_codes, si_code);
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break;
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case SIGSEGV:
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code = xlookup(sigsegv_codes, si_code);
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break;
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case SIGBUS:
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code = xlookup(sigbus_codes, si_code);
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break;
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case SIGSYS:
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code = xlookup(sigsys_codes, si_code);
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break;
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}
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}
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if (code)
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tprints(code);
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else
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tprintf("%#x", si_code);
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}
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static void
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print_si_info(const siginfo_t *sip, bool verbose)
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{
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if (sip->si_errno) {
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tprints(", si_errno=");
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if ((unsigned) sip->si_errno < nerrnos
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&& errnoent[sip->si_errno])
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tprints(errnoent[sip->si_errno]);
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else
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tprintf("%d", sip->si_errno);
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}
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if (SI_FROMUSER(sip)) {
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switch (sip->si_code) {
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case SI_USER:
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printsigsource(sip);
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break;
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case SI_TKILL:
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printsigsource(sip);
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break;
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#if defined HAVE_SIGINFO_T_SI_TIMERID && defined HAVE_SIGINFO_T_SI_OVERRUN
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case SI_TIMER:
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tprintf(", si_timerid=%#x, si_overrun=%d",
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sip->si_timerid, sip->si_overrun);
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printsigval(sip, verbose);
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break;
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#endif
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default:
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printsigsource(sip);
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if (sip->si_ptr)
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printsigval(sip, verbose);
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break;
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}
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} else {
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switch (sip->si_signo) {
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case SIGCHLD:
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printsigsource(sip);
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tprints(", si_status=");
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if (sip->si_code == CLD_EXITED)
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tprintf("%d", sip->si_status);
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else
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printsignal(sip->si_status);
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if (!verbose)
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tprints(", ...");
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else
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tprintf(", si_utime=%llu, si_stime=%llu",
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(unsigned long long) sip->si_utime,
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(unsigned long long) sip->si_stime);
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break;
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case SIGILL: case SIGFPE:
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case SIGSEGV: case SIGBUS:
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tprintf(", si_addr=%#lx",
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(unsigned long) sip->si_addr);
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break;
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case SIGPOLL:
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switch (sip->si_code) {
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case POLL_IN: case POLL_OUT: case POLL_MSG:
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tprintf(", si_band=%ld",
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(long) sip->si_band);
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break;
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}
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break;
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#ifdef HAVE_SIGINFO_T_SI_SYSCALL
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case SIGSYS:
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tprintf(", si_call_addr=%#lx, si_syscall=__NR_%s, si_arch=",
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(unsigned long) sip->si_call_addr,
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syscall_name(sip->si_syscall));
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printxval(audit_arch, sip->si_arch, "AUDIT_ARCH_???");
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break;
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#endif
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default:
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if (sip->si_pid || sip->si_uid)
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printsigsource(sip);
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if (sip->si_ptr)
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printsigval(sip, verbose);
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}
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}
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}
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#ifdef IN_MPERS
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static
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#endif
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void
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printsiginfo(const siginfo_t *sip, bool verbose)
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{
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if (sip->si_signo == 0) {
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tprints("{}");
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return;
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}
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tprints("{si_signo=");
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printsignal(sip->si_signo);
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tprints(", si_code=");
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print_si_code(sip->si_signo, sip->si_code);
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#ifdef SI_NOINFO
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if (sip->si_code != SI_NOINFO)
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#endif
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print_si_info(sip, verbose);
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tprints("}");
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}
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MPERS_PRINTER_DECL(void, printsiginfo_at)(struct tcb *tcp, long addr)
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{
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siginfo_t si;
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if (!umove_or_printaddr(tcp, addr, &si))
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printsiginfo(&si, verbose(tcp));
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}
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