lgetxattr.c

来自「linux下的C语言库源码有一百多M解压后很不错」· C语言 代码 · 共 37 行

/* Access to extended attributes on files.  Hurd version.
   Copyright (C) 2004 Free Software Foundation, Inc.
   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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <errno.h>
#include <sys/xattr.h>
#include <hurd.h>
#include <hurd/xattr.h>
#include <fcntl.h>

ssize_t
lgetxattr (const char *path, const char *name, void *value, size_t size)
{
  error_t err;
  file_t port = __file_name_lookup (path, O_NOLINK, 0);
  if (port == MACH_PORT_NULL)
    return -1;
  err = _hurd_xattr_get (port, name, value, &size);
  __mach_port_deallocate (__mach_task_self (), port);
  return err ? __hurd_fail (err) : size;
}