1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _NSCD_FRONTEND_H 27 #define _NSCD_FRONTEND_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #include "cache.h" 34 35 #define NSCD_N2NBUF_MAXLEN 1024 * 8 36 #define NSCD_PHDR_MAXLEN 1024 * 8 37 #define NSCD_LOOKUP_BUFSIZE 1024 * 16 38 #define NSCD_DOORBUF_MAXLEN 1024 * 512 39 #define NSCD_PHDR_LEN(hdrp) ((hdrp)->data_off) 40 #define NSCD_DATA_LEN(hdrp) ((hdrp)->data_len) 41 /* used to check clients required privileges */ 42 #define NSCD_ALL_PRIV 0 43 #define NSCD_READ_PRIV 1 44 45 #define NSCD_ALLOC_LOOKUP_BUFFER(bufp, bufsiz, hdrp, space, spsiz) \ 46 if ((hdrp)->pbufsiz <= spsiz) { \ 47 (void) memcpy(space, (hdrp), NSCD_PHDR_LEN((hdrp))); \ 48 bufp = space; \ 49 bufsiz = spsiz; \ 50 hdrp = (nss_pheader_t *)(void *)space; \ 51 (hdrp)->pbufsiz = bufsiz; \ 52 (hdrp)->data_len = bufsiz - (hdrp)->data_off; \ 53 } else { \ 54 (bufp) = NULL; \ 55 bufsiz = (hdrp)->pbufsiz; \ 56 if (bufsiz > spsiz) \ 57 bufsiz = NSCD_DOORBUF_MAXLEN; \ 58 (bufp) = alloca(bufsiz); \ 59 if ((bufp) != NULL) { \ 60 (void) memcpy((bufp), (hdrp), NSCD_PHDR_LEN(hdrp)); \ 61 (hdrp) = (nss_pheader_t *)(void *)(bufp); \ 62 (hdrp)->pbufsiz = bufsiz; \ 63 (hdrp)->data_len = bufsiz - (hdrp)->data_off; \ 64 } else { \ 65 NSCD_SET_STATUS((hdrp), NSS_ERROR, ENOMEM); \ 66 (void) door_return((char *)(hdrp), \ 67 NSCD_PHDR_LEN(hdrp), NULL, 0); \ 68 } \ 69 } 70 71 #define NSCD_SET_RETURN_ARG(hdrp, arg_size) \ 72 if (NSCD_STATUS_IS_OK((nss_pheader_t *)(hdrp))) \ 73 arg_size = NSCD_PHDR_LEN(hdrp) + (NSCD_DATA_LEN(hdrp) > 0 ? \ 74 NSCD_DATA_LEN(hdrp) + 1 : 0); \ 75 else \ 76 arg_size = NSCD_PHDR_LEN(hdrp); 77 78 /* prototypes */ 79 uid_t _nscd_get_client_euid(); 80 int _nscd_check_client_priv(int); 81 int _nscd_setup_server(char *execname, char **argv); 82 int _nscd_setup_child_server(int did); 83 int _nscd_get_clearance(sema_t *sema); 84 int _nscd_release_clearance(sema_t *sema); 85 void _nscd_init_cache_sema(sema_t *sema, char *cache_name); 86 nscd_rc_t _nscd_alloc_frontend_cfg(); 87 void _nscd_APP_check_cred(void *buf, pid_t *pidp, char *dc_str, 88 int log_comp, int log_level); 89 void _nscd_restart_if_cfgfile_changed(); 90 #ifdef __cplusplus 91 } 92 #endif 93 94 #endif /* _NSCD_FRONTEND_H */ 95