clang-tests-external/gdb/7.5/gdb/gdbserver/hostio.c - llvm-archive - Git at Google

 /* Host file transfer support for gdbserver.
    Copyright (C) 2007-2012 Free Software Foundation, Inc.

    Contributed by CodeSourcery.

    This file is part of GDB.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 #include "server.h"
 #include "gdb/fileio.h"

 #include <fcntl.h>
 #include <limits.h>
 #include <unistd.h>

 extern int remote_debug;

 struct fd_list
 {
   int fd;
   struct fd_list *next;
 };

 static struct fd_list *open_fds;

 static int
 safe_fromhex (char a, int *nibble)
 {
   if (a >= '0' && a <= '9')
     *nibble = a - '0';
   else if (a >= 'a' && a <= 'f')
     *nibble = a - 'a' + 10;
   else if (a >= 'A' && a <= 'F')
     *nibble = a - 'A' + 10;
   else
     return -1;

   return 0;
 }

 static int
 require_filename (char **pp, char *filename)
 {
   int count;
   char *p;

   p = *pp;
   count = 0;

   while (*p && *p != ',')
     {
       int nib1, nib2;

       /* Don't allow overflow.  */
       if (count >= PATH_MAX - 1)
 	return -1;

       if (safe_fromhex (p[0], &nib1)
 	  || safe_fromhex (p[1], &nib2))
 	return -1;

       filename[count++] = nib1 * 16 + nib2;
       p += 2;
     }

   filename[count] = '\0';
   *pp = p;
   return 0;
 }

 static int
 require_int (char **pp, int *value)
 {
   char *p;
   int count;

   p = *pp;
   *value = 0;
   count = 0;

   while (*p && *p != ',')
     {
       int nib;

       /* Don't allow overflow.  */
       if (count >= 7)
 	return -1;

       if (safe_fromhex (p[0], &nib))
 	return -1;
       *value = *value * 16 + nib;
       p++;
       count++;
     }

   *pp = p;
   return 0;
 }

 static int
 require_data (char *p, int p_len, char **data, int *data_len)
 {
   int input_index, output_index, escaped;

   *data = xmalloc (p_len);

   output_index = 0;
   escaped = 0;
   for (input_index = 0; input_index < p_len; input_index++)
     {
       char b = p[input_index];

       if (escaped)
 	{
 	  (*data)[output_index++] = b ^ 0x20;
 	  escaped = 0;
 	}
       else if (b == '}')
 	escaped = 1;
       else
 	(*data)[output_index++] = b;
     }

   if (escaped)
     {
       free (*data);
       return -1;
     }

   *data_len = output_index;
   return 0;
 }

 static int
 require_comma (char **pp)
 {
   if (**pp == ',')
     {
       (*pp)++;
       return 0;
     }
   else
     return -1;
 }

 static int
 require_end (char *p)
 {
   if (*p == '\0')
     return 0;
   else
     return -1;
 }

 static int
 require_valid_fd (int fd)
 {
   struct fd_list *fd_ptr;

   for (fd_ptr = open_fds; fd_ptr != NULL; fd_ptr = fd_ptr->next)
     if (fd_ptr->fd == fd)
       return 0;

   return -1;
 }

 /* Fill in own_buf with the last hostio error packet, however it
    suitable for the target.  */
 static void
 hostio_error (char *own_buf)
 {
   the_target->hostio_last_error (own_buf);
 }

 static void
 hostio_packet_error (char *own_buf)
 {
   sprintf (own_buf, "F-1,%x", FILEIO_EINVAL);
 }

 static void
 hostio_reply (char *own_buf, int result)
 {
   sprintf (own_buf, "F%x", result);
 }

 static int
 hostio_reply_with_data (char *own_buf, char *buffer, int len,
 			int *new_packet_len)
 {
   int input_index, output_index, out_maxlen;

   sprintf (own_buf, "F%x;", len);
   output_index = strlen (own_buf);

   out_maxlen = PBUFSIZ;

   for (input_index = 0; input_index < len; input_index++)
     {
       char b = buffer[input_index];

       if (b == '$' || b == '#' || b == '}' || b == '*')
 	{
 	  /* These must be escaped.  */
 	  if (output_index + 2 > out_maxlen)
 	    break;
 	  own_buf[output_index++] = '}';
 	  own_buf[output_index++] = b ^ 0x20;
 	}
       else
 	{
 	  if (output_index + 1 > out_maxlen)
 	    break;
 	  own_buf[output_index++] = b;
 	}
     }

   *new_packet_len = output_index;
   return input_index;
 }

 static int
 fileio_open_flags_to_host (int fileio_open_flags, int *open_flags_p)
 {
   int open_flags = 0;

   if (fileio_open_flags & ~FILEIO_O_SUPPORTED)
     return -1;

   if (fileio_open_flags & FILEIO_O_CREAT)
     open_flags |= O_CREAT;
   if (fileio_open_flags & FILEIO_O_EXCL)
     open_flags |= O_EXCL;
   if (fileio_open_flags & FILEIO_O_TRUNC)
     open_flags |= O_TRUNC;
   if (fileio_open_flags & FILEIO_O_APPEND)
     open_flags |= O_APPEND;
   if (fileio_open_flags & FILEIO_O_RDONLY)
     open_flags |= O_RDONLY;
   if (fileio_open_flags & FILEIO_O_WRONLY)
     open_flags |= O_WRONLY;
   if (fileio_open_flags & FILEIO_O_RDWR)
     open_flags |= O_RDWR;
 /* On systems supporting binary and text mode, always open files in
    binary mode. */
 #ifdef O_BINARY
   open_flags |= O_BINARY;
 #endif

   *open_flags_p = open_flags;
   return 0;
 }

 static void
 handle_open (char *own_buf)
 {
   char filename[PATH_MAX];
   char *p;
   int fileio_flags, mode, flags, fd;
   struct fd_list *new_fd;

   p = own_buf + strlen ("vFile:open:");

   if (require_filename (&p, filename)
       || require_comma (&p)
       || require_int (&p, &fileio_flags)
       || require_comma (&p)
       || require_int (&p, &mode)
       || require_end (p)
       || fileio_open_flags_to_host (fileio_flags, &flags))
     {
       hostio_packet_error (own_buf);
       return;
     }

   /* We do not need to convert MODE, since the fileio protocol
      uses the standard values.  */
   fd = open (filename, flags, mode);

   if (fd == -1)
     {
       hostio_error (own_buf);
       return;
     }

   /* Record the new file descriptor.  */
   new_fd = xmalloc (sizeof (struct fd_list));
   new_fd->fd = fd;
   new_fd->next = open_fds;
   open_fds = new_fd;

   hostio_reply (own_buf, fd);
 }

 static void
 handle_pread (char *own_buf, int *new_packet_len)
 {
   int fd, ret, len, offset, bytes_sent;
   char *p, *data;

   p = own_buf + strlen ("vFile:pread:");

   if (require_int (&p, &fd)
       || require_comma (&p)
       || require_valid_fd (fd)
       || require_int (&p, &len)
       || require_comma (&p)
       || require_int (&p, &offset)
       || require_end (p))
     {
       hostio_packet_error (own_buf);
       return;
     }

   data = xmalloc (len);
 #ifdef HAVE_PREAD
   ret = pread (fd, data, len, offset);
 #else
   ret = -1;
 #endif
   /* If we have no pread or it failed for this file, use lseek/read.  */
   if (ret == -1)
     {
       ret = lseek (fd, offset, SEEK_SET);
       if (ret != -1)
 	ret = read (fd, data, len);
     }

   if (ret == -1)
     {
       hostio_error (own_buf);
       free (data);
       return;
     }

   bytes_sent = hostio_reply_with_data (own_buf, data, ret, new_packet_len);

   /* If we were using read, and the data did not all fit in the reply,
      we would have to back up using lseek here.  With pread it does
      not matter.  But we still have a problem; the return value in the
      packet might be wrong, so we must fix it.  This time it will
      definitely fit.  */
   if (bytes_sent < ret)
     bytes_sent = hostio_reply_with_data (own_buf, data, bytes_sent,
 					 new_packet_len);

   free (data);
 }

 static void
 handle_pwrite (char *own_buf, int packet_len)
 {
   int fd, ret, len, offset;
   char *p, *data;

   p = own_buf + strlen ("vFile:pwrite:");

   if (require_int (&p, &fd)
       || require_comma (&p)
       || require_valid_fd (fd)
       || require_int (&p, &offset)
       || require_comma (&p)
       || require_data (p, packet_len - (p - own_buf), &data, &len))
     {
       hostio_packet_error (own_buf);
       return;
     }

 #ifdef HAVE_PWRITE
   ret = pwrite (fd, data, len, offset);
 #else
   ret = -1;
 #endif
   /* If we have no pwrite or it failed for this file, use lseek/write.  */
   if (ret == -1)
     {
       ret = lseek (fd, offset, SEEK_SET);
       if (ret != -1)
 	ret = write (fd, data, len);
     }

   if (ret == -1)
     {
       hostio_error (own_buf);
       free (data);
       return;
     }

   hostio_reply (own_buf, ret);
   free (data);
 }

 static void
 handle_close (char *own_buf)
 {
   int fd, ret;
   char *p;
   struct fd_list **open_fd_p, *old_fd;

   p = own_buf + strlen ("vFile:close:");

   if (require_int (&p, &fd)
       || require_valid_fd (fd)
       || require_end (p))
     {
       hostio_packet_error (own_buf);
       return;
     }

   ret = close (fd);

   if (ret == -1)
     {
       hostio_error (own_buf);
       return;
     }

   open_fd_p = &open_fds;
   /* We know that fd is in the list, thanks to require_valid_fd.  */
   while ((*open_fd_p)->fd != fd)
     open_fd_p = &(*open_fd_p)->next;

   old_fd = *open_fd_p;
   *open_fd_p = (*open_fd_p)->next;
   free (old_fd);

   hostio_reply (own_buf, ret);
 }

 static void
 handle_unlink (char *own_buf)
 {
   char filename[PATH_MAX];
   char *p;
   int ret;

   p = own_buf + strlen ("vFile:unlink:");

   if (require_filename (&p, filename)
       || require_end (p))
     {
       hostio_packet_error (own_buf);
       return;
     }

   ret = unlink (filename);

   if (ret == -1)
     {
       hostio_error (own_buf);
       return;
     }

   hostio_reply (own_buf, ret);
 }

 static void
 handle_readlink (char *own_buf, int *new_packet_len)
 {
 #if defined (HAVE_READLINK)
   char filename[PATH_MAX], linkname[PATH_MAX];
   char *p;
   int ret, bytes_sent;

   p = own_buf + strlen ("vFile:readlink:");

   if (require_filename (&p, filename)
       || require_end (p))
     {
       hostio_packet_error (own_buf);
       return;
     }

   ret = readlink (filename, linkname, sizeof linkname);
   if (ret == -1)
     {
       hostio_error (own_buf);
       return;
     }

   bytes_sent = hostio_reply_with_data (own_buf, linkname, ret, new_packet_len);

   /* If the response does not fit into a single packet, do not attempt
      to return a partial response, but simply fail.  */
   if (bytes_sent < ret)
     sprintf (own_buf, "F-1,%x", FILEIO_ENAMETOOLONG);
 #else /* ! HAVE_READLINK */
     sprintf (own_buf, "F-1,%x", FILEIO_ENOSYS);
 #endif
 }

 /* Handle all the 'F' file transfer packets.  */

 int
 handle_vFile (char *own_buf, int packet_len, int *new_packet_len)
 {
   if (strncmp (own_buf, "vFile:open:", 11) == 0)
     handle_open (own_buf);
   else if (strncmp (own_buf, "vFile:pread:", 11) == 0)
     handle_pread (own_buf, new_packet_len);
   else if (strncmp (own_buf, "vFile:pwrite:", 12) == 0)
     handle_pwrite (own_buf, packet_len);
   else if (strncmp (own_buf, "vFile:close:", 12) == 0)
     handle_close (own_buf);
   else if (strncmp (own_buf, "vFile:unlink:", 13) == 0)
     handle_unlink (own_buf);
   else if (strncmp (own_buf, "vFile:readlink:", 15) == 0)
     handle_readlink (own_buf, new_packet_len);
   else
     return 0;

   return 1;
 }
	/* Host file transfer support for gdbserver.
	Copyright (C) 2007-2012 Free Software Foundation, Inc.

	Contributed by CodeSourcery.

	This file is part of GDB.

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 3 of the License, or
	(at your option) any later version.

	This program 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 General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program. If not, see <http://www.gnu.org/licenses/>. */

	#include "server.h"
	#include "gdb/fileio.h"

	#include <fcntl.h>
	#include <limits.h>
	#include <unistd.h>

	extern int remote_debug;

	struct fd_list
	{
	int fd;
	struct fd_list *next;
	};

	static struct fd_list *open_fds;

	static int
	safe_fromhex (char a, int *nibble)
	{
	if (a >= '0' && a <= '9')
	*nibble = a - '0';
	else if (a >= 'a' && a <= 'f')
	*nibble = a - 'a' + 10;
	else if (a >= 'A' && a <= 'F')
	*nibble = a - 'A' + 10;
	else
	return -1;

	return 0;
	}

	static int
	require_filename (char *pp, char filename)
	{
	int count;
	char *p;

	p = *pp;
	count = 0;

	while (p && p != ',')
	{
	int nib1, nib2;

	/* Don't allow overflow. */
	if (count >= PATH_MAX - 1)
	return -1;

	if (safe_fromhex (p[0], &nib1)
	\|\| safe_fromhex (p[1], &nib2))
	return -1;

	filename[count++] = nib1 * 16 + nib2;
	p += 2;
	}

	filename[count] = '\0';
	*pp = p;
	return 0;
	}

	static int
	require_int (char *pp, int value)
	{
	char *p;
	int count;

	p = *pp;
	*value = 0;
	count = 0;

	while (p && p != ',')
	{
	int nib;

	/* Don't allow overflow. */
	if (count >= 7)
	return -1;

	if (safe_fromhex (p[0], &nib))
	return -1;
	value = value * 16 + nib;
	p++;
	count++;
	}

	*pp = p;
	return 0;
	}

	static int
	require_data (char p, int p_len, char data, int data_len)
	{
	int input_index, output_index, escaped;

	*data = xmalloc (p_len);

	output_index = 0;
	escaped = 0;
	for (input_index = 0; input_index < p_len; input_index++)
	{
	char b = p[input_index];

	if (escaped)
	{
	(*data)[output_index++] = b ^ 0x20;
	escaped = 0;
	}
	else if (b == '}')
	escaped = 1;
	else
	(*data)[output_index++] = b;
	}

	if (escaped)
	{
	free (*data);
	return -1;
	}

	*data_len = output_index;
	return 0;
	}

	static int
	require_comma (char **pp)
	{
	if (**pp == ',')
	{
	(*pp)++;
	return 0;
	}
	else
	return -1;
	}

	static int
	require_end (char *p)
	{
	if (*p == '\0')
	return 0;
	else
	return -1;
	}

	static int
	require_valid_fd (int fd)
	{
	struct fd_list *fd_ptr;

	for (fd_ptr = open_fds; fd_ptr != NULL; fd_ptr = fd_ptr->next)
	if (fd_ptr->fd == fd)
	return 0;

	return -1;
	}

	/* Fill in own_buf with the last hostio error packet, however it
	suitable for the target. */
	static void
	hostio_error (char *own_buf)
	{
	the_target->hostio_last_error (own_buf);
	}

	static void
	hostio_packet_error (char *own_buf)
	{
	sprintf (own_buf, "F-1,%x", FILEIO_EINVAL);
	}

	static void
	hostio_reply (char *own_buf, int result)
	{
	sprintf (own_buf, "F%x", result);
	}

	static int
	hostio_reply_with_data (char own_buf, char buffer, int len,
	int *new_packet_len)
	{
	int input_index, output_index, out_maxlen;

	sprintf (own_buf, "F%x;", len);
	output_index = strlen (own_buf);

	out_maxlen = PBUFSIZ;

	for (input_index = 0; input_index < len; input_index++)
	{
	char b = buffer[input_index];

	if (b == '$' \|\| b == '#' \|\| b == '}' \|\| b == '*')
	{
	/* These must be escaped. */
	if (output_index + 2 > out_maxlen)
	break;
	own_buf[output_index++] = '}';
	own_buf[output_index++] = b ^ 0x20;
	}
	else
	{
	if (output_index + 1 > out_maxlen)
	break;
	own_buf[output_index++] = b;
	}
	}

	*new_packet_len = output_index;
	return input_index;
	}

	static int
	fileio_open_flags_to_host (int fileio_open_flags, int *open_flags_p)
	{
	int open_flags = 0;

	if (fileio_open_flags & ~FILEIO_O_SUPPORTED)
	return -1;

	if (fileio_open_flags & FILEIO_O_CREAT)
	open_flags \|= O_CREAT;
	if (fileio_open_flags & FILEIO_O_EXCL)
	open_flags \|= O_EXCL;
	if (fileio_open_flags & FILEIO_O_TRUNC)
	open_flags \|= O_TRUNC;
	if (fileio_open_flags & FILEIO_O_APPEND)
	open_flags \|= O_APPEND;
	if (fileio_open_flags & FILEIO_O_RDONLY)
	open_flags \|= O_RDONLY;
	if (fileio_open_flags & FILEIO_O_WRONLY)
	open_flags \|= O_WRONLY;
	if (fileio_open_flags & FILEIO_O_RDWR)
	open_flags \|= O_RDWR;
	/* On systems supporting binary and text mode, always open files in
	binary mode. */
	#ifdef O_BINARY
	open_flags \|= O_BINARY;
	#endif

	*open_flags_p = open_flags;
	return 0;
	}

	static void
	handle_open (char *own_buf)
	{
	char filename[PATH_MAX];
	char *p;
	int fileio_flags, mode, flags, fd;
	struct fd_list *new_fd;

	p = own_buf + strlen ("vFile:open:");

	if (require_filename (&p, filename)
	\|\| require_comma (&p)
	\|\| require_int (&p, &fileio_flags)
	\|\| require_comma (&p)
	\|\| require_int (&p, &mode)
	\|\| require_end (p)
	\|\| fileio_open_flags_to_host (fileio_flags, &flags))
	{
	hostio_packet_error (own_buf);
	return;
	}

	/* We do not need to convert MODE, since the fileio protocol
	uses the standard values. */
	fd = open (filename, flags, mode);

	if (fd == -1)
	{
	hostio_error (own_buf);
	return;
	}

	/* Record the new file descriptor. */
	new_fd = xmalloc (sizeof (struct fd_list));
	new_fd->fd = fd;
	new_fd->next = open_fds;
	open_fds = new_fd;

	hostio_reply (own_buf, fd);
	}

	static void
	handle_pread (char own_buf, int new_packet_len)
	{
	int fd, ret, len, offset, bytes_sent;
	char p, data;

	p = own_buf + strlen ("vFile:pread:");

	if (require_int (&p, &fd)
	\|\| require_comma (&p)
	\|\| require_valid_fd (fd)
	\|\| require_int (&p, &len)
	\|\| require_comma (&p)
	\|\| require_int (&p, &offset)
	\|\| require_end (p))
	{
	hostio_packet_error (own_buf);
	return;
	}

	data = xmalloc (len);
	#ifdef HAVE_PREAD
	ret = pread (fd, data, len, offset);
	#else
	ret = -1;
	#endif
	/* If we have no pread or it failed for this file, use lseek/read. */
	if (ret == -1)
	{
	ret = lseek (fd, offset, SEEK_SET);
	if (ret != -1)
	ret = read (fd, data, len);
	}

	if (ret == -1)
	{
	hostio_error (own_buf);
	free (data);
	return;
	}

	bytes_sent = hostio_reply_with_data (own_buf, data, ret, new_packet_len);

	/* If we were using read, and the data did not all fit in the reply,
	we would have to back up using lseek here. With pread it does
	not matter. But we still have a problem; the return value in the
	packet might be wrong, so we must fix it. This time it will
	definitely fit. */
	if (bytes_sent < ret)
	bytes_sent = hostio_reply_with_data (own_buf, data, bytes_sent,
	new_packet_len);

	free (data);
	}

	static void
	handle_pwrite (char *own_buf, int packet_len)
	{
	int fd, ret, len, offset;
	char p, data;

	p = own_buf + strlen ("vFile:pwrite:");

	if (require_int (&p, &fd)
	\|\| require_comma (&p)
	\|\| require_valid_fd (fd)
	\|\| require_int (&p, &offset)
	\|\| require_comma (&p)
	\|\| require_data (p, packet_len - (p - own_buf), &data, &len))
	{
	hostio_packet_error (own_buf);
	return;
	}

	#ifdef HAVE_PWRITE
	ret = pwrite (fd, data, len, offset);
	#else
	ret = -1;
	#endif
	/* If we have no pwrite or it failed for this file, use lseek/write. */
	if (ret == -1)
	{
	ret = lseek (fd, offset, SEEK_SET);
	if (ret != -1)
	ret = write (fd, data, len);
	}

	if (ret == -1)
	{
	hostio_error (own_buf);
	free (data);
	return;
	}

	hostio_reply (own_buf, ret);
	free (data);
	}

	static void
	handle_close (char *own_buf)
	{
	int fd, ret;
	char *p;
	struct fd_list *open_fd_p, old_fd;

	p = own_buf + strlen ("vFile:close:");

	if (require_int (&p, &fd)
	\|\| require_valid_fd (fd)
	\|\| require_end (p))
	{
	hostio_packet_error (own_buf);
	return;
	}

	ret = close (fd);

	if (ret == -1)
	{
	hostio_error (own_buf);
	return;
	}

	open_fd_p = &open_fds;
	/* We know that fd is in the list, thanks to require_valid_fd. */
	while ((*open_fd_p)->fd != fd)
	open_fd_p = &(*open_fd_p)->next;

	old_fd = *open_fd_p;
	open_fd_p = (open_fd_p)->next;
	free (old_fd);

	hostio_reply (own_buf, ret);
	}

	static void
	handle_unlink (char *own_buf)
	{
	char filename[PATH_MAX];
	char *p;
	int ret;

	p = own_buf + strlen ("vFile:unlink:");

	if (require_filename (&p, filename)
	\|\| require_end (p))
	{
	hostio_packet_error (own_buf);
	return;
	}

	ret = unlink (filename);

	if (ret == -1)
	{
	hostio_error (own_buf);
	return;
	}

	hostio_reply (own_buf, ret);
	}

	static void
	handle_readlink (char own_buf, int new_packet_len)
	{
	#if defined (HAVE_READLINK)
	char filename[PATH_MAX], linkname[PATH_MAX];
	char *p;
	int ret, bytes_sent;

	p = own_buf + strlen ("vFile:readlink:");

	if (require_filename (&p, filename)
	\|\| require_end (p))
	{
	hostio_packet_error (own_buf);
	return;
	}

	ret = readlink (filename, linkname, sizeof linkname);
	if (ret == -1)
	{
	hostio_error (own_buf);
	return;
	}

	bytes_sent = hostio_reply_with_data (own_buf, linkname, ret, new_packet_len);

	/* If the response does not fit into a single packet, do not attempt
	to return a partial response, but simply fail. */
	if (bytes_sent < ret)
	sprintf (own_buf, "F-1,%x", FILEIO_ENAMETOOLONG);
	#else /* ! HAVE_READLINK */
	sprintf (own_buf, "F-1,%x", FILEIO_ENOSYS);
	#endif
	}

	/* Handle all the 'F' file transfer packets. */

	int
	handle_vFile (char own_buf, int packet_len, int new_packet_len)
	{
	if (strncmp (own_buf, "vFile:open:", 11) == 0)
	handle_open (own_buf);
	else if (strncmp (own_buf, "vFile:pread:", 11) == 0)
	handle_pread (own_buf, new_packet_len);
	else if (strncmp (own_buf, "vFile:pwrite:", 12) == 0)
	handle_pwrite (own_buf, packet_len);
	else if (strncmp (own_buf, "vFile:close:", 12) == 0)
	handle_close (own_buf);
	else if (strncmp (own_buf, "vFile:unlink:", 13) == 0)
	handle_unlink (own_buf);
	else if (strncmp (own_buf, "vFile:readlink:", 15) == 0)
	handle_readlink (own_buf, new_packet_len);
	else
	return 0;

	return 1;
	}