nscd_frontend.h revision b57459abfba36eb3068cfe44c6921168b4c4f774
/*
* 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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _NSCD_FRONTEND_H
#define _NSCD_FRONTEND_H
#ifdef __cplusplus
extern "C" {
#endif
#include "cache.h"
#define NSCD_N2NBUF_MAXLEN 1024 * 8
#define NSCD_PHDR_MAXLEN 1024 * 8
#define NSCD_LOOKUP_BUFSIZE 1024 * 16
#define NSCD_DOORBUF_MAXLEN 1024 * 512
#define NSCD_PHDR_LEN(hdrp) ((hdrp)->data_off)
#define NSCD_DATA_LEN(hdrp) ((hdrp)->data_len)
/* used to check clients required privileges */
#define NSCD_ALL_PRIV 0
#define NSCD_READ_PRIV 1
#define NSCD_ALLOC_LOOKUP_BUFFER(bufp, bufsiz, hdrp, space, spsiz) \
if ((hdrp)->pbufsiz <= spsiz) { \
(void) memcpy(space, (hdrp), NSCD_PHDR_LEN((hdrp))); \
bufp = space; \
bufsiz = spsiz; \
hdrp = (nss_pheader_t *)(void *)space; \
(hdrp)->pbufsiz = bufsiz; \
(hdrp)->data_len = bufsiz - (hdrp)->data_off; \
} else { \
(bufp) = NULL; \
bufsiz = (hdrp)->pbufsiz; \
if (bufsiz > spsiz) \
bufsiz = NSCD_DOORBUF_MAXLEN; \
(bufp) = alloca(bufsiz); \
if ((bufp) != NULL) { \
(void) memcpy((bufp), (hdrp), NSCD_PHDR_LEN(hdrp)); \
(hdrp) = (nss_pheader_t *)(void *)(bufp); \
(hdrp)->pbufsiz = bufsiz; \
(hdrp)->data_len = bufsiz - (hdrp)->data_off; \
} else { \
NSCD_SET_STATUS((hdrp), NSS_ERROR, ENOMEM); \
(void) door_return((char *)(hdrp), \
NSCD_PHDR_LEN(hdrp), NULL, 0); \
} \
}
#define NSCD_SET_RETURN_ARG(hdrp, arg_size) \
if (NSCD_STATUS_IS_OK((nss_pheader_t *)(hdrp))) \
arg_size = NSCD_PHDR_LEN(hdrp) + (NSCD_DATA_LEN(hdrp) > 0 ? \
NSCD_DATA_LEN(hdrp) + 1 : 0); \
else \
arg_size = NSCD_PHDR_LEN(hdrp);
/* prototypes */
uid_t _nscd_get_client_euid();
int _nscd_check_client_priv(int);
int _nscd_setup_server(char *execname, char **argv);
int _nscd_setup_child_server(int did);
int _nscd_get_clearance(sema_t *sema);
int _nscd_release_clearance(sema_t *sema);
void _nscd_init_cache_sema(sema_t *sema, char *cache_name);
nscd_rc_t _nscd_alloc_frontend_cfg();
void _nscd_APP_check_cred(void *buf, pid_t *pidp, char *dc_str,
int log_comp, int log_level);
void _nscd_restart_if_cfgfile_changed();
#ifdef __cplusplus
}
#endif
#endif /* _NSCD_FRONTEND_H */