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/* This is part of um-ViewOS
* The user-mode implementation of OSVIEW -- A Process with a View
*
* services.h: structure for service mgmt
*
* Copyright 2005 Renzo Davoli University of Bologna - Italy
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* $Id: services.h 775 2009-09-01 21:15:23Z rd235 $
*
*/
#ifndef __SERVICES_H
#define __SERVICES_H
#include "treepoch.h"
typedef long (*sysfun)();
typedef unsigned long c_set;
#define MC_USER 1
#define MC_CORECTLCLASS(x) ((x) << 1)
#define MC_CORECTLOPT(x) ((x) << 6)
#define MC_USERCTL(ctl) (MC_USER | (ctl << 1))
#define MC_PROC MC_CORECTLCLASS(0)
#define MC_MODULE MC_CORECTLCLASS(1)
#define MC_MOUNT MC_CORECTLCLASS(2)
#define MC_ADD MC_CORECTLOPT(0)
#define MC_REM MC_CORECTLOPT(1)
#define MCH_SET(c, set) *(set) |= (1 << c)
#define MCH_CLR(c, set) *(set) &= ~(1 << c)
#define MCH_ISSET(c, set) (*(set) & (1 << c))
#define MCH_ZERO(set) *(set) = 0;
#define PSEUDO_CHECK 0x80
#define CHECKMODULE 0
#define CHECKPATH 1
#define CHECKSOCKET 2
#define CHECKCHRDEVICE 3
#define CHECKBLKDEVICE 4
#define CHECKSC 5
#define CHECKBINFMT 6
#define CHECKFSALIAS 7
#define NCHECKS 8
#define CHECKFSTYPE (PSEUDO_CHECK | CHECKMODULE)
#define CHECKPATHEXACT (PSEUDO_CHECK | CHECKPATH)
// for IOCTL mgmt
#define CHECKIOCTLPARMS 0x40000000
#define IOCTLLENMASK 0x07ffffff
#define IOCTL_R 0x10000000
#define IOCTL_W 0x20000000
#define BINFMT_MODULE_ALLOC 1
#define BINFMT_KEEP_ARG0 2
struct binfmt_req {
char *path;
char *interp;
char *extraarg;
char *buf;
int flags;
};
struct ht_elem;
#define ERESTARTSYS 512
struct service {
char *name;
char *description;
/* handle to service data. It is used by um_service.c to store
* dynamic lib handle (see dlopen (3))*/
void *dlhandle;
/* destructor for ht_elem's defined by this module */
void (*destructor)(int type, struct ht_elem *hte);
/* Generic notification/callback function. See ../include/module.h for
* details. */
long (*ctl)();
/* Mask of ctl classes for which the module want synthetized
* notifications. For example, at module loading time, it may want one
* ctl(MC_PROC | MC_ADD) for each currently running process.
*/
c_set ctlhs;
/*
* (int fd, void *req)
* returns: the length of the field bit_or IOCTL_R/IOCTL_W if the parameter is input/output
*/
sysfun ioctlparms;
/* proactive management of select/poll system call. The module provides this function
* to activate a callback when an event occurs.
* it has the followin args:
* (void (* cb)(), void *arg, int fd, int how)
* cb: the callback function (if NULL, it means that a previous registration for callback
* must be deleted).
* arg: argument passed to the callback function
* fd: fd (i.e. sfd, the fd as seen by the service module)
* how: 0x1 READ_OK, 0x2 WRITE_OK, 0x4 EXTRA
*/
sysfun event_subscribe;
/* the syscall table, the arguments are the same of the "real world" syscalls,*/
sysfun *um_syscall;
/* the socket call table, the arguments are the same of the "real world" syscalls,*/
sysfun *um_socket;
/* the virtual call table, the arguments are the same of the "real world" syscalls,*/
sysfun *um_virsc;
};
#define UM_NONE 0xff
#define UM_ERR 0x00
int add_service(char *file,int permanent);
int del_service(char *name);
int list_services(char *buf,int len);
int name_service(char *name,char *buf,int len);
void service_ctl(unsigned long type, char *sender, char *destination, ...);
void _service_init();
void service_addregfun(int, sysfun, sysfun);
#endif
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