usr/src/cmd/nscd/nscd_door.h

   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 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  * Copyright 2012 Milan Jurik. All rights reserved.
  26  */
  27
  28 #ifndef _NSCD_DOOR_H
  29 #define _NSCD_DOOR_H
  30
  31 /*
  32  * Definitions for nscd to nscd door interfaces
  33  */
  34
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 #include <alloca.h>
  40 #include <nss_dbdefs.h>
  41
  42 /* nscd v2 nscd -> nscd call numbers */
  43 #define NSCD_PING       (NSCD_CALLCAT_N2N|0x01)
  44 #define NSCD_GETADMIN   (NSCD_CALLCAT_N2N|0x02)
  45 #define NSCD_SETADMIN   (NSCD_CALLCAT_N2N|0x03)
  46 #define NSCD_GETPUADMIN (NSCD_CALLCAT_N2N|0x04)
  47 #define NSCD_SETPUADMIN (NSCD_CALLCAT_N2N|0x05)
  48 #define NSCD_KILLSERVER (NSCD_CALLCAT_N2N|0x06)
  49
  50 #define NSCD_IMHERE     (NSCD_CALLCAT_N2N|0x10) /* IMHERE+WHOAMI */
  51 #define NSCD_FORK       (NSCD_CALLCAT_N2N|0x20)
  52 #define NSCD_SETUID     (NSCD_CALLCAT_N2N|0x30)
  53 #define NSCD_KILL       (NSCD_CALLCAT_N2N|0x40)
  54 #define NSCD_PULSE      (NSCD_CALLCAT_N2N|0x50)
  55 #define NSCD_REFRESH    (NSCD_CALLCAT_N2N|0x60)
  56
  57 /* nscd v2 nscd identities */
  58
  59 #define NSCD_MAIN       0x00000001
  60 #define NSCD_FORKER     0x00000002
  61 #define NSCD_CHILD      0x00000004
  62 #define NSCD_WHOAMI     0x0000000F
  63
  64 #define NSCD_ALLOC_DOORBUF(cn, dsz, uptr, usz) \
  65         usz = (sizeof (nss_pheader_t) + (dsz)); \
  66         uptr = alloca(usz); \
  67         (void) memset(uptr, 0, usz); \
  68         ((nss_pheader_t *)uptr)->nsc_callnumber = (cn); \
  69         ((nss_pheader_t *)uptr)->p_version = NSCD_HEADER_REV; \
  70         ((nss_pheader_t *)uptr)->pbufsiz = usz; \
  71         ((nss_pheader_t *)uptr)->data_off = sizeof (nss_pheader_t); \
  72         ((nss_pheader_t *)uptr)->key_off = sizeof (nss_pheader_t); \
  73         ((nss_pheader_t *)uptr)->dbd_off = sizeof (nss_pheader_t); \
  74         ((nss_pheader_t *)uptr)->data_len = dsz;
  75
  76 #define NSCD_N2N_DOOR_DATA(type, buf) \
  77         (type *)((void *)(((char *)(buf)) + sizeof (nss_pheader_t)))
  78
  79 #define NSCD_N2N_DOOR_BUF_SIZE(struct) \
  80         sizeof (nss_pheader_t) + sizeof (struct)
  81
  82 #define NSCD_SET_STATUS(ph, st, errno) \
  83         { \
  84                 int     e = errno; \
  85                 (ph)->p_status = st; \
  86                 if (e != -1) \
  87                         (ph)->p_errno = e; \
  88         }
  89
  90 #define NSCD_SET_HERRNO(ph, herrno) \
  91         (ph)->p_herrno = herrno;
  92
  93
  94 #define NSCD_SET_STATUS_SUCCESS(ph) \
  95         (ph)->p_status = NSS_SUCCESS; \
  96         (ph)->p_errno = 0;
  97
  98 #define NSCD_SET_N2N_STATUS(ph, st, errno, n2nst) \
  99         { \
 100                 int     e = errno; \
 101                 (ph)->p_status = st; \
 102                 if (e != -1) \
 103                         (ph)->p_errno = e; \
 104                 (ph)->nscdpriv = n2nst; \
 105         }
 106
 107 #define NSCD_STATUS_IS_OK(ph) \
 108         (((ph)->p_status) == NSS_SUCCESS)
 109
 110 #define NSCD_STATUS_IS_NOT_OK(ph) \
 111         (((ph)->p_status) != NSS_SUCCESS)
 112
 113 #define NSCD_GET_STATUS(ph) \
 114         (((nss_pheader_t *)(ph))->p_status)
 115
 116 #define NSCD_GET_ERRNO(ph) \
 117         (((nss_pheader_t *)(ph))->p_errno)
 118
 119 #define NSCD_GET_HERRNO(ph) \
 120         (((nss_pheader_t *)(ph))->p_herrno)
 121
 122 #define NSCD_GET_NSCD_STATUS(ph) \
 123         (((nss_pheader_t *)(ph))->nscdpriv)
 124
 125 #define NSCD_CLEAR_STATUS(ph) \
 126         (ph)->p_status = 0; \
 127         (ph)->p_errno = 0; \
 128         (ph)->nscdpriv = 0;
 129
 130 #define NSCD_COPY_STATUS(ph, ph1) \
 131         (ph)->p_status = (ph1)->p_status; \
 132         (ph)->p_errno = (ph1)->p_errno; \
 133         (ph)->nscdpriv = (ph1)->nscdpriv;
 134
 135 nss_status_t    _nscd_doorcall(int callnum);
 136 nss_status_t    _nscd_doorcall_data(int callnum, void *indata,
 137                         int indlen, void *outdata, int outdlen,
 138                         nss_pheader_t *phdr);
 139
 140 nss_status_t     _nscd_doorcall_fd(int fd, int callnum, void *indata,
 141                         int indlen, void *outdata, int outdlen,
 142                         nss_pheader_t *phdr);
 143
 144 nss_status_t    _nscd_doorcall_sendfd(int fd, int callnum,
 145                         void *indata, int indlen, nss_pheader_t *phdr);
 146
 147 #ifdef  __cplusplus
 148 }
 149 #endif
 150
 151 #endif  /* _NSCD_DOOR_H */