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/*---------------------------------------------------------------------------*/
/*lib.h*/
/*---------------------------------------------------------------------------*/
/*Declarations of basic routines for filesystem manipulations*/
/*---------------------------------------------------------------------------*/
/*Based on the code of unionfs translator.*/
/*---------------------------------------------------------------------------*/
/*Copyright (C) 2001, 2002, 2005, 2008, 2009 Free Software Foundation,
Inc. Written by Sergiu Ivanov <unlimitedscolobb@gmail.com>.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.*/
/*---------------------------------------------------------------------------*/
#ifndef __LIB_H__
#define __LIB_H__
/*---------------------------------------------------------------------------*/
#define __USE_FILE_OFFSET64
/*---------------------------------------------------------------------------*/
#include <hurd.h>
#include <dirent.h>
#include <stddef.h>
#include <hurd/iohelp.h>
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*--------Macros-------------------------------------------------------------*/
/*Alignment of directory entries*/
#define DIRENT_ALIGN 4
/*---------------------------------------------------------------------------*/
/*The offset of the directory name in the directory entry structure*/
#define DIRENT_NAME_OFFS offsetof(struct dirent, d_name)
/*---------------------------------------------------------------------------*/
/*Computes the length of the structure before the name + the name + 0,
all padded to DIRENT_ALIGN*/
#define DIRENT_LEN(name_len)\
((DIRENT_NAME_OFFS + (name_len) + 1 + DIRENT_ALIGN - 1) &\
~(DIRENT_ALIGN - 1))
/*---------------------------------------------------------------------------*/
/*Deallocate the given port for the current task*/
#define PORT_DEALLOC(p) (mach_port_deallocate(mach_task_self(), (p)))
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*--------Functions----------------------------------------------------------*/
/*Fetches directory entries for `dir`*/
error_t dir_entries_get (file_t dir,
char **dirent_data, /*the list of directory
entries as returned by
dir_readdir */
size_t * dirent_data_size,/*the size of
`dirent_data` */
struct dirent ***dirent_list/*the array of
pointers to
beginnings of
dirents in
dirent_data */
);
/*---------------------------------------------------------------------------*/
/*Lookup `name` under `dir` (or cwd, if `dir` is invalid)*/
error_t file_lookup (file_t dir, char *name,
int flags0, /*try to open with these flags first */
int flags1, /*try to open with these flags, if
`flags0` fail */
int mode, /*if the file is to be created, create
it with this mode */
file_t * port, /*store the port to the looked up
file here */
io_statbuf_t * stat /*store the stat information here */
);
/*---------------------------------------------------------------------------*/
/*Checks whether `user` has the right to open the node described by
`stat` with `flags`*/
error_t
check_open_permissions
(struct iouser *user, io_statbuf_t * stat, int flags);
/*---------------------------------------------------------------------------*/
#endif /*__LIB_H__*/
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