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-rw-r--r--stdio-common/psiginfo.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/stdio-common/psiginfo.c b/stdio-common/psiginfo.c
new file mode 100644
index 0000000000..9fc2911fd1
--- /dev/null
+++ b/stdio-common/psiginfo.c
@@ -0,0 +1,183 @@
+/* Copyright (C) 2009 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#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>
+
+
+/* Defined in sys_siglist.c.  */
+extern const char *const _sys_siglist[];
+extern const char *const _sys_siglist_internal[] attribute_hidden;
+
+
+#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 = INTUSE(_sys_siglist)[pinfo->si_signo]) != NULL)
+    {
+      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 = sizeof (C (codes_, sig)) / sizeof (C (codes_, sig)[0]);\
+	  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])", pinfo->si_addr);
+      else if (pinfo->si_signo == SIGCHLD)
+	fprintf (fp, "%ld %d %ld)", (long int) pinfo->si_pid, pinfo->si_status,
+		 (long int) pinfo->si_uid);
+      else if (pinfo->si_signo == SIGPOLL)
+	fprintf (fp, "%ld)", pinfo->si_band);
+      else
+	fprintf (fp, "%ld %ld)",
+		 (long int) pinfo->si_pid, (long int) pinfo->si_uid);
+    }
+  else
+    fprintf (fp, _("Unknown signal %d\n"),  pinfo->si_signo);
+
+  fclose (fp);
+
+  write_not_cancel (STDERR_FILENO, buf, strlen (buf));
+}