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(catch_segfault): If HAVE_PROC_SELF is defined write out memory map.

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This commit is contained in:
Ulrich Drepper
2002-11-03 08:42:11 +00:00
parent c213fe9c7d
commit 45cca066c1
1 changed files with 18 additions and 1 deletions
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19
sysdeps/generic/segfault.c
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@ -1,5 +1,5 @@
/* Catch segmentation faults and print backtrace. /* Catch segmentation faults and print backtrace.
Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
@ -169,6 +169,23 @@ catch_segfault (int signal, SIGCONTEXT ctx)
/* Now generate nicely formatted output. */ /* Now generate nicely formatted output. */
__backtrace_symbols_fd (arr, cnt, fd); __backtrace_symbols_fd (arr, cnt, fd);
#ifdef HAVE_PROC_SELF
/* Now the link map. */
int mapfd = open ("/proc/self/maps", O_RDONLY);
if (mapfd != -1)
{
write (fd, "\nMemory map:\n\n", 14);
char buf[256];
ssize_t n;
while ((n = TEMP_FAILURE_RETRY (read (mapfd, buf, sizeof (buf)))) > 0)
TEMP_FAILURE_RETRY (write (fd, buf, n));
close (mapfd);
}
#endif
/* Pass on the signal (so that a core file is produced). */ /* Pass on the signal (so that a core file is produced). */
sa.sa_handler = SIG_DFL; sa.sa_handler = SIG_DFL;
sigemptyset (&sa.sa_mask); sigemptyset (&sa.sa_mask);