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63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
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/* Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Ince
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <stddef.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <string.h>
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ssize_t
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DEFUN(__getdirentries, (fd, buf, nbytes, basep),
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int fd AND PTR buf AND size_t nbytes AND off_t *basep)
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{
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error_t err;
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int entriesread;
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char *data = buf;
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mach_msg_type_number_t bytesread = nbytes;
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/* Fault before taking any locks. */
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*(volatile off_t *) basep = *basep;
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err = HURD_DPORT_USE (fd, __dir_readdir (port, &data, &bytesread,
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*basep, -1, nbytes, &entriesread));
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if (err)
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return __hurd_dfail (fd, err);
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if (data != buf)
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{
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size_t copy = bytesread;
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if (copy > nbytes)
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/* The server has a violated the dir_readdir protocol. */
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copy = nbytes;
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memcpy (buf, data, copy);
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__vm_deallocate (__mach_task_self (), (vm_address_t) data, bytesread);
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bytesread = copy;
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}
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*basep += entriesread;
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return bytesread;
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}
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weak_alias (__getdirentries, getdirentries)
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