lx_thunk_server.h revision 9acbbeaf2a1ffe5c14b244867d427714fab43c5c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _LX_THUNK_SERVER_H
#define _LX_THUNK_SERVER_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <netdb.h>
#include <procfs.h>
/*
* Binary that should be exec'd to start up the thunking server
*/
#define LXT_SERVER_BINARY "/native/usr/lib/brand/lx/lx_thunk"
/*
* When the thunking server is started it will need to communicate
* to the client via two fifos. These fifos will be passed to the
* thunking server via the following file descriptors:
*/
#define LXT_SERVER_FIFO_RD_FD 3
#define LXT_SERVER_FIFO_WR_FD 4
/*
* Operations supported by the thunking server
*/
#define LXT_SERVER_OP_MIN 0
#define LXT_SERVER_OP_PING 0
#define LXT_SERVER_OP_NAME2HOST 1
#define LXT_SERVER_OP_ADDR2HOST 2
#define LXT_SERVER_OP_NAME2SERV 3
#define LXT_SERVER_OP_PORT2SERV 4
#define LXT_SERVER_OP_OPENLOG 5
#define LXT_SERVER_OP_SYSLOG 6
#define LXT_SERVER_OP_CLOSELOG 7
#define LXT_SERVER_OP_MAX 8
/*
* Macros used to translate pointer into offsets for when they are
* being transmitted between the client and server processes.
*
* NOTE: We're going to add 1 to every offset value. The reason
* for this is that some of the pointers we're converting to offsets are
* stored in NULL terminated arrays, and if one of the members of
* one of these arrays happened to be at the beginning of the storage
* buffer it would have an offset of 0 and when the client tries to
* translate the offsets back into pointers it wouldn't be able
* to differentiate between the 0 offset from the end of the array.
*/
#define LXT_PTR_TO_OFFSET(ptr, base) \
((void *)((uintptr_t)(ptr) - (uintptr_t)(base) + 1))
#define LXT_OFFSET_TO_PTR(offset, base) \
((void *)((uintptr_t)(offset) + (uintptr_t)(base) - 1))
/*
* Structures passed to the thunking server via door calls
*/
typedef struct lxt_server_arg {
int lxt_sa_op;
int lxt_sa_success;
int lxt_sa_errno;
char lxt_sa_data[1];
} lxt_server_arg_t;
typedef struct lxt_gethost_arg {
struct hostent lxt_gh_result;
int lxt_gh_h_errno;
int lxt_gh_type;
int lxt_gh_token_len;
int lxt_gh_buf_len;
int lxt_gh_storage_len;
char lxt_gh_storage[1];
} lxt_gethost_arg_t;
typedef struct lxt_getserv_arg {
struct servent lxt_gs_result;
int lxt_gs_token_len;
int lxt_gs_buf_len;
char lxt_gs_proto[5];
int lxt_gs_storage_len;
char lxt_gs_storage[1];
} lxt_getserv_arg_t;
typedef struct lxt_openlog_arg {
int lxt_ol_logopt;
int lxt_ol_facility;
char lxt_ol_ident[128];
} lxt_openlog_arg_t;
typedef struct lxt_syslog_arg {
int lxt_sl_priority;
pid_t lxt_sl_pid;
char lxt_sl_progname[PRFNSZ];
char lxt_sl_message[1024];
} lxt_syslog_arg_t;
/*
* Functions called by the brand library to manage startup of the
* thunk server process.
*/
void lxt_server_init(int, char *[]);
int lxt_server_pid(int *pid);
void lxt_server_exec_check(void);
#ifdef __cplusplus
}
#endif
#endif /* _LX_THUNK_SERVER_H */