1: /* Write formatted list with names for addresses in backtrace to a file.
    2:    Copyright (C) 1998, 2003, 2005 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4:    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
    5: 
    6:    The GNU C Library is free software; you can redistribute it and/or
    7:    modify it under the terms of the GNU Lesser General Public
    8:    License as published by the Free Software Foundation; either
    9:    version 2.1 of the License, or (at your option) any later version.
   10: 
   11:    The GNU C Library is distributed in the hope that it will be useful,
   12:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   13:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   14:    Lesser General Public License for more details.
   15: 
   16:    You should have received a copy of the GNU Lesser General Public
   17:    License along with the GNU C Library; if not, write to the Free
   18:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   19:    02111-1307 USA.  */
   20: 
   21: #include <execinfo.h>
   22: #include <string.h>
   23: #include <sys/uio.h>
   24: 
   25: #include <stdio-common/_itoa.h>
   26: #include <not-cancel.h>
   27: 
   28: #if __ELF_NATIVE_CLASS == 32
   29: # define WORD_WIDTH 8
   30: #else
   31: /* We assume 64bits.  */
   32: # define WORD_WIDTH 16
   33: #endif
   34: 
   35: 
   36: void
   37: __backtrace_symbols_fd (array, size, fd)
   38:      void *const *array;
   39:      int size;
   40:      int fd;
   41: {
   42:   struct iovec iov[3];
   43:   int cnt;
   44: 
   45:   for (cnt = 0; cnt < size; ++cnt)
   46:     {
   47:       char buf[WORD_WIDTH];
   48: 
   49:       iov[0].iov_base = (void *) "[0x";
   50:       iov[0].iov_len = 3;
   51: 
   52:       iov[1].iov_base = _itoa_word ((unsigned long int) array[cnt],
   53:                                     &buf[WORD_WIDTH], 16, 0);
   54:       iov[1].iov_len = &buf[WORD_WIDTH] - (char *) iov[1].iov_base;
   55: 
   56:       iov[2].iov_base = (void *) "]\n";
   57:       iov[2].iov_len = 2;
   58: 
   59:       /* We prefer to use the non-cancelable interface if it is available.  */
   60:       writev_not_cancel_no_status (fd, iov, 3);
   61:     }
   62: }
   63: weak_alias (__backtrace_symbols_fd, backtrace_symbols_fd)
   64: libc_hidden_def (__backtrace_symbols_fd)