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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [gdbserver/] [hostio.c] - Blame information for rev 178

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/* Host file transfer support for gdbserver.
   Copyright (C) 2007, 2008 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 2 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, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.  */
 
#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 = malloc (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)
    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 = malloc (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 = malloc (len);
#ifdef HAVE_PREAD
  ret = pread (fd, data, len, offset);
#else
  ret = lseek (fd, offset, SEEK_SET);
  if (ret != -1)
    ret = read (fd, data, len);
#endif
 
  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 = lseek (fd, offset, SEEK_SET);
  if (ret != -1)
    ret = write (fd, data, len);
#endif
 
  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;
  while (*open_fd_p && (*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);
}
 
/* 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
    return 0;
 
  return 1;
}

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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [gdbserver/] [hostio.c] - Blame information for rev 178

Line No.	Rev	Author	Line
1	24	jeremybenn	`/* Host file transfer support for gdbserver.`
2			`Copyright (C) 2007, 2008 Free Software Foundation, Inc.`
3
4			`Contributed by CodeSourcery.`
5
6			`This file is part of GDB.`
7
8			`This program is free software; you can redistribute it and/or modify`
9			`it under the terms of the GNU General Public License as published by`
10			`the Free Software Foundation; either version 2 of the License, or`
11			`(at your option) any later version.`
12
13			`This program is distributed in the hope that it will be useful,`
14			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
16			`GNU General Public License for more details.`
17
18			`You should have received a copy of the GNU General Public License`
19			`along with this program; if not, write to the Free Software`
20			`Foundation, Inc., 51 Franklin Street, Fifth Floor,`
21			`Boston, MA 02110-1301, USA. */`
22
23			`#include "server.h"`
24			`#include "gdb/fileio.h"`
25
26			`#include <fcntl.h>`
27			`#include <limits.h>`
28			`#include <unistd.h>`
29
30			`extern int remote_debug;`
31
32			`struct fd_list`
33			`{`
34			`int fd;`
35			`struct fd_list *next;`
36			`};`
37
38			`static struct fd_list *open_fds;`
39
40			`static int`
41			`safe_fromhex (char a, int *nibble)`
42			`{`
43			`if (a >= '0' && a <= '9')`
44			`*nibble = a - '0';`
45			`else if (a >= 'a' && a <= 'f')`
46			`*nibble = a - 'a' + 10;`
47			`else if (a >= 'A' && a <= 'F')`
48			`*nibble = a - 'A' + 10;`
49			`else`
50			`return -1;`
51
52			`return 0;`
53			`}`
54
55			`static int`
56			`require_filename (char *pp, char filename)`
57			`{`
58			`int count;`
59			`char *p;`
60
61			`p = *pp;`
62			`count = 0;`
63
64			`while (p && p != ',')`
65			`{`
66			`int nib1, nib2;`
67
68			`/* Don't allow overflow. */`
69			`if (count >= PATH_MAX - 1)`
70			`return -1;`
71
72			`if (safe_fromhex (p[0], &nib1)`
73			`\|\| safe_fromhex (p[1], &nib2))`
74			`return -1;`
75
76			`filename[count++] = nib1 * 16 + nib2;`
77			`p += 2;`
78			`}`
79
80			`filename[count] = '\0';`
81			`*pp = p;`
82			`return 0;`
83			`}`
84
85			`static int`
86			`require_int (char *pp, int value)`
87			`{`
88			`char *p;`
89			`int count;`
90
91			`p = *pp;`
92			`*value = 0;`
93			`count = 0;`
94
95			`while (p && p != ',')`
96			`{`
97			`int nib;`
98
99			`/* Don't allow overflow. */`
100			`if (count >= 7)`
101			`return -1;`
102
103			`if (safe_fromhex (p[0], &nib))`
104			`return -1;`
105			`value = value * 16 + nib;`
106			`p++;`
107			`count++;`
108			`}`
109
110			`*pp = p;`
111			`return 0;`
112			`}`
113
114			`static int`
115			`require_data (char p, int p_len, char data, int data_len)`
116			`{`
117			`int input_index, output_index, escaped;`
118
119			`*data = malloc (p_len);`
120
121			`output_index = 0;`
122			`escaped = 0;`
123			`for (input_index = 0; input_index < p_len; input_index++)`
124			`{`
125			`char b = p[input_index];`
126
127			`if (escaped)`
128			`{`
129			`(*data)[output_index++] = b ^ 0x20;`
130			`escaped = 0;`
131			`}`
132			`else if (b == '}')`
133			`escaped = 1;`
134			`else`
135			`(*data)[output_index++] = b;`
136			`}`
137
138			`if (escaped)`
139			`return -1;`
140
141			`*data_len = output_index;`
142			`return 0;`
143			`}`
144
145			`static int`
146			`require_comma (char **pp)`
147			`{`
148			`if (**pp == ',')`
149			`{`
150			`(*pp)++;`
151			`return 0;`
152			`}`
153			`else`
154			`return -1;`
155			`}`
156
157			`static int`
158			`require_end (char *p)`
159			`{`
160			`if (*p == '\0')`
161			`return 0;`
162			`else`
163			`return -1;`
164			`}`
165
166			`static int`
167			`require_valid_fd (int fd)`
168			`{`
169			`struct fd_list *fd_ptr;`
170
171			`for (fd_ptr = open_fds; fd_ptr != NULL; fd_ptr = fd_ptr->next)`
172			`if (fd_ptr->fd == fd)`
173			`return 0;`
174
175			`return -1;`
176			`}`
177
178			`/* Fill in own_buf with the last hostio error packet, however it`
179			`suitable for the target. */`
180			`static void`
181			`hostio_error (char *own_buf)`
182			`{`
183			`the_target->hostio_last_error (own_buf);`
184			`}`
185
186			`static void`
187			`hostio_packet_error (char *own_buf)`
188			`{`
189			`sprintf (own_buf, "F-1,%x", FILEIO_EINVAL);`
190			`}`
191
192			`static void`
193			`hostio_reply (char *own_buf, int result)`
194			`{`
195			`sprintf (own_buf, "F%x", result);`
196			`}`
197
198			`static int`
199			`hostio_reply_with_data (char own_buf, char buffer, int len,`
200			`int *new_packet_len)`
201			`{`
202			`int input_index, output_index, out_maxlen;`
203
204			`sprintf (own_buf, "F%x;", len);`
205			`output_index = strlen (own_buf);`
206
207			`out_maxlen = PBUFSIZ;`
208
209			`for (input_index = 0; input_index < len; input_index++)`
210			`{`
211			`char b = buffer[input_index];`
212
213			`if (b == '$' \|\| b == '#' \|\| b == '}' \|\| b == '*')`
214			`{`
215			`/* These must be escaped. */`
216			`if (output_index + 2 > out_maxlen)`
217			`break;`
218			`own_buf[output_index++] = '}';`
219			`own_buf[output_index++] = b ^ 0x20;`
220			`}`
221			`else`
222			`{`
223			`if (output_index + 1 > out_maxlen)`
224			`break;`
225			`own_buf[output_index++] = b;`
226			`}`
227			`}`
228
229			`*new_packet_len = output_index;`
230			`return input_index;`
231			`}`
232
233			`static int`
234			`fileio_open_flags_to_host (int fileio_open_flags, int *open_flags_p)`
235			`{`
236			`int open_flags = 0;`
237
238			`if (fileio_open_flags & ~FILEIO_O_SUPPORTED)`
239			`return -1;`
240
241			`if (fileio_open_flags & FILEIO_O_CREAT)`
242			`open_flags \|= O_CREAT;`
243			`if (fileio_open_flags & FILEIO_O_EXCL)`
244			`open_flags \|= O_EXCL;`
245			`if (fileio_open_flags & FILEIO_O_TRUNC)`
246			`open_flags \|= O_TRUNC;`
247			`if (fileio_open_flags & FILEIO_O_APPEND)`
248			`open_flags \|= O_APPEND;`
249			`if (fileio_open_flags & FILEIO_O_RDONLY)`
250			`open_flags \|= O_RDONLY;`
251			`if (fileio_open_flags & FILEIO_O_WRONLY)`
252			`open_flags \|= O_WRONLY;`
253			`if (fileio_open_flags & FILEIO_O_RDWR)`
254			`open_flags \|= O_RDWR;`
255			`/* On systems supporting binary and text mode, always open files in`
256			`binary mode. */`
257			`#ifdef O_BINARY`
258			`open_flags \|= O_BINARY;`
259			`#endif`
260
261			`*open_flags_p = open_flags;`
262			`return 0;`
263			`}`
264
265			`static void`
266			`handle_open (char *own_buf)`
267			`{`
268			`char filename[PATH_MAX];`
269			`char *p;`
270			`int fileio_flags, mode, flags, fd;`
271			`struct fd_list *new_fd;`
272
273			`p = own_buf + strlen ("vFile:open:");`
274
275			`if (require_filename (&p, filename)`
276			`\|\| require_comma (&p)`
277			`\|\| require_int (&p, &fileio_flags)`
278			`\|\| require_comma (&p)`
279			`\|\| require_int (&p, &mode)`
280			`\|\| require_end (p)`
281			`\|\| fileio_open_flags_to_host (fileio_flags, &flags))`
282			`{`
283			`hostio_packet_error (own_buf);`
284			`return;`
285			`}`
286
287			`/* We do not need to convert MODE, since the fileio protocol`
288			`uses the standard values. */`
289			`fd = open (filename, flags, mode);`
290
291			`if (fd == -1)`
292			`{`
293			`hostio_error (own_buf);`
294			`return;`
295			`}`
296
297			`/* Record the new file descriptor. */`
298			`new_fd = malloc (sizeof (struct fd_list));`
299			`new_fd->fd = fd;`
300			`new_fd->next = open_fds;`
301			`open_fds = new_fd;`
302
303			`hostio_reply (own_buf, fd);`
304			`}`
305
306			`static void`
307			`handle_pread (char own_buf, int new_packet_len)`
308			`{`
309			`int fd, ret, len, offset, bytes_sent;`
310			`char p, data;`
311
312			`p = own_buf + strlen ("vFile:pread:");`
313
314			`if (require_int (&p, &fd)`
315			`\|\| require_comma (&p)`
316			`\|\| require_valid_fd (fd)`
317			`\|\| require_int (&p, &len)`
318			`\|\| require_comma (&p)`
319			`\|\| require_int (&p, &offset)`
320			`\|\| require_end (p))`
321			`{`
322			`hostio_packet_error (own_buf);`
323			`return;`
324			`}`
325
326			`data = malloc (len);`
327			`#ifdef HAVE_PREAD`
328			`ret = pread (fd, data, len, offset);`
329			`#else`
330			`ret = lseek (fd, offset, SEEK_SET);`
331			`if (ret != -1)`
332			`ret = read (fd, data, len);`
333			`#endif`
334
335			`if (ret == -1)`
336			`{`
337			`hostio_error (own_buf);`
338			`free (data);`
339			`return;`
340			`}`
341
342			`bytes_sent = hostio_reply_with_data (own_buf, data, ret, new_packet_len);`
343
344			`/* If we were using read, and the data did not all fit in the reply,`
345			`we would have to back up using lseek here. With pread it does`
346			`not matter. But we still have a problem; the return value in the`
347			`packet might be wrong, so we must fix it. This time it will`
348			`definitely fit. */`
349			`if (bytes_sent < ret)`
350			`bytes_sent = hostio_reply_with_data (own_buf, data, bytes_sent,`
351			`new_packet_len);`
352
353			`free (data);`
354			`}`
355
356			`static void`
357			`handle_pwrite (char *own_buf, int packet_len)`
358			`{`
359			`int fd, ret, len, offset;`
360			`char p, data;`
361
362			`p = own_buf + strlen ("vFile:pwrite:");`
363
364			`if (require_int (&p, &fd)`
365			`\|\| require_comma (&p)`
366			`\|\| require_valid_fd (fd)`
367			`\|\| require_int (&p, &offset)`
368			`\|\| require_comma (&p)`
369			`\|\| require_data (p, packet_len - (p - own_buf), &data, &len))`
370			`{`
371			`hostio_packet_error (own_buf);`
372			`return;`
373			`}`
374
375			`#ifdef HAVE_PWRITE`
376			`ret = pwrite (fd, data, len, offset);`
377			`#else`
378			`ret = lseek (fd, offset, SEEK_SET);`
379			`if (ret != -1)`
380			`ret = write (fd, data, len);`
381			`#endif`
382
383			`if (ret == -1)`
384			`{`
385			`hostio_error (own_buf);`
386			`free (data);`
387			`return;`
388			`}`
389
390			`hostio_reply (own_buf, ret);`
391			`free (data);`
392			`}`
393
394			`static void`
395			`handle_close (char *own_buf)`
396			`{`
397			`int fd, ret;`
398			`char *p;`
399			`struct fd_list *open_fd_p, old_fd;`
400
401			`p = own_buf + strlen ("vFile:close:");`
402
403			`if (require_int (&p, &fd)`
404			`\|\| require_valid_fd (fd)`
405			`\|\| require_end (p))`
406			`{`
407			`hostio_packet_error (own_buf);`
408			`return;`
409			`}`
410
411			`ret = close (fd);`
412
413			`if (ret == -1)`
414			`{`
415			`hostio_error (own_buf);`
416			`return;`
417			`}`
418
419			`open_fd_p = &open_fds;`
420			`while (open_fd_p && (open_fd_p)->fd != fd)`
421			`open_fd_p = &(*open_fd_p)->next;`
422
423			`old_fd = *open_fd_p;`
424			`open_fd_p = (open_fd_p)->next;`
425			`free (old_fd);`
426
427			`hostio_reply (own_buf, ret);`
428			`}`
429
430			`static void`
431			`handle_unlink (char *own_buf)`
432			`{`
433			`char filename[PATH_MAX];`
434			`char *p;`
435			`int ret;`
436
437			`p = own_buf + strlen ("vFile:unlink:");`
438
439			`if (require_filename (&p, filename)`
440			`\|\| require_end (p))`
441			`{`
442			`hostio_packet_error (own_buf);`
443			`return;`
444			`}`
445
446			`ret = unlink (filename);`
447
448			`if (ret == -1)`
449			`{`
450			`hostio_error (own_buf);`
451			`return;`
452			`}`
453
454			`hostio_reply (own_buf, ret);`
455			`}`
456
457			`/* Handle all the 'F' file transfer packets. */`
458
459			`int`
460			`handle_vFile (char own_buf, int packet_len, int new_packet_len)`
461			`{`
462			`if (strncmp (own_buf, "vFile:open:", 11) == 0)`
463			`handle_open (own_buf);`
464			`else if (strncmp (own_buf, "vFile:pread:", 11) == 0)`
465			`handle_pread (own_buf, new_packet_len);`
466			`else if (strncmp (own_buf, "vFile:pwrite:", 12) == 0)`
467			`handle_pwrite (own_buf, packet_len);`
468			`else if (strncmp (own_buf, "vFile:close:", 12) == 0)`
469			`handle_close (own_buf);`
470			`else if (strncmp (own_buf, "vFile:unlink:", 13) == 0)`
471			`handle_unlink (own_buf);`
472			`else`
473			`return 0;`
474
475			`return 1;`
476			`}`