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/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <array_length.h>
#include <errno.h>
#include <libintl.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <not-cancel.h>
#define MF(l) MF1 (l)
#define MF1(l) str_##l
#define C(s1, s2) C1 (s1, s2)
#define C1(s1, s2) s1##s2
#define NOW SIGILL
#include "psiginfo-define.h"
#define NOW SIGFPE
#include "psiginfo-define.h"
#define NOW SIGSEGV
#include "psiginfo-define.h"
#define NOW SIGBUS
#include "psiginfo-define.h"
#define NOW SIGTRAP
#include "psiginfo-define.h"
#define NOW SIGCLD
#include "psiginfo-define.h"
#define NOW SIGPOLL
#include "psiginfo-define.h"
/* Print out on stderr a line consisting of the test in S, a colon, a space,
a message describing the meaning of the signal number PINFO and a newline.
If S is NULL or "", the colon and space are omitted. */
void
psiginfo (const siginfo_t *pinfo, const char *s)
{
char buf[512];
FILE *fp = __fmemopen (buf, sizeof (buf), "w");
if (fp == NULL)
{
const char *colon;
if (s == NULL || *s == '\0')
s = colon = "";
else
colon = ": ";
__fxprintf (NULL, "%s%ssignal %d\n", s, colon, pinfo->si_signo);
return;
}
if (s != NULL && *s != '\0')
fprintf (fp, "%s: ", s);
const char *desc;
if (pinfo->si_signo >= 0 && pinfo->si_signo < NSIG
&& ((desc = _sys_siglist[pinfo->si_signo]) != NULL
#ifdef SIGRTMIN
|| (pinfo->si_signo >= SIGRTMIN && pinfo->si_signo < SIGRTMAX)
#endif
))
{
#ifdef SIGRTMIN
if (desc == NULL)
{
if (pinfo->si_signo - SIGRTMIN < SIGRTMAX - pinfo->si_signo)
{
if (pinfo->si_signo == SIGRTMIN)
fprintf (fp, "SIGRTMIN (");
else
fprintf (fp, "SIGRTMIN+%d (", pinfo->si_signo - SIGRTMIN);
}
else
{
if (pinfo->si_signo == SIGRTMAX)
fprintf (fp, "SIGRTMAX (");
else
fprintf (fp, "SIGRTMAX-%d (", SIGRTMAX - pinfo->si_signo);
}
}
else
#endif
fprintf (fp, "%s (", _(desc));
const char *base = NULL;
const uint8_t *offarr = NULL;
size_t offarr_len = 0;
switch (pinfo->si_signo)
{
#define H(sig) \
case sig: \
base = C(codestrs_, sig).str; \
offarr = C (codes_, sig); \
offarr_len = array_length (C (codes_, sig)); \
break
H (SIGILL);
H (SIGFPE);
H (SIGSEGV);
H (SIGBUS);
H (SIGTRAP);
H (SIGCHLD);
H (SIGPOLL);
}
const char *str = NULL;
if (offarr != NULL
&& pinfo->si_code >= 1 && pinfo->si_code <= offarr_len)
str = base + offarr[pinfo->si_code - 1];
else
switch (pinfo->si_code)
{
case SI_USER:
str = N_("Signal sent by kill()");
break;
case SI_QUEUE:
str = N_("Signal sent by sigqueue()");
break;
case SI_TIMER:
str = N_("Signal generated by the expiration of a timer");
break;
case SI_ASYNCIO:
str = N_("\
Signal generated by the completion of an asynchronous I/O request");
break;
case SI_MESGQ:
str = N_("\
Signal generated by the arrival of a message on an empty message queue");
break;
#ifdef SI_TKILL
case SI_TKILL:
str = N_("Signal sent by tkill()");
break;
#endif
#ifdef SI_ASYNCNL
case SI_ASYNCNL:
str = N_("\
Signal generated by the completion of an asynchronous name lookup request");
break;
#endif
#ifdef SI_SIGIO
case SI_SIGIO:
str = N_("\
Signal generated by the completion of an I/O request");
break;
#endif
#ifdef SI_KERNEL
case SI_KERNEL:
str = N_("Signal sent by the kernel");
break;
#endif
}
if (str != NULL)
fprintf (fp, "%s ", _(str));
else
fprintf (fp, "%d ", pinfo->si_code);
if (pinfo->si_signo == SIGILL || pinfo->si_signo == SIGFPE
|| pinfo->si_signo == SIGSEGV || pinfo->si_signo == SIGBUS)
fprintf (fp, "[%p])\n", pinfo->si_addr);
else if (pinfo->si_signo == SIGCHLD)
fprintf (fp, "%ld %d %ld)\n",
(long int) pinfo->si_pid, pinfo->si_status,
(long int) pinfo->si_uid);
else if (pinfo->si_signo == SIGPOLL)
fprintf (fp, "%ld)\n", (long int) pinfo->si_band);
else
fprintf (fp, "%ld %ld)\n",
(long int) pinfo->si_pid, (long int) pinfo->si_uid);
}
else
fprintf (fp, _("Unknown signal %d\n"), pinfo->si_signo);
fclose (fp);
__write_nocancel (STDERR_FILENO, buf, strlen (buf));
}
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