1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/* Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Ince
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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <stddef.h>
#include <errno.h>
#include <sys/types.h>
#include <hurd.h>
#include <hurd/fd.h>
#include <string.h>
ssize_t
DEFUN(__getdirentries, (fd, buf, nbytes, basep),
int fd AND PTR buf AND size_t nbytes AND off_t *basep)
{
error_t err;
int entriesread;
char *data = buf;
mach_msg_type_number_t bytesread = nbytes;
/* Fault before taking any locks. */
*(volatile off_t *) basep = *basep;
err = HURD_DPORT_USE (fd, __dir_readdir (port, &data, &bytesread,
*basep, -1, nbytes, &entriesread));
if (err)
return __hurd_dfail (fd, err);
if (data != buf)
{
size_t copy = bytesread;
if (copy > nbytes)
/* The server has a violated the dir_readdir protocol. */
copy = nbytes;
memcpy (buf, data, copy);
__vm_deallocate (__mach_task_self (), (vm_address_t) data, bytesread);
bytesread = copy;
}
*basep += entriesread;
return bytesread;
}
weak_alias (__getdirentries, getdirentries)
|
