nss/nss.h

   1 /* Copyright (C) 1996-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 /* Define interface to NSS.  This is meant for the interface functions
  19    and for implementors of new services.  */
  20
  21 #ifndef _NSS_H
  22 #define _NSS_H  1
  23
  24 #include <features.h>
  25 #include <stddef.h>
  26 #include <stdint.h>
  27 #include <sys/types.h>
  28
  29
  30 __BEGIN_DECLS
  31
  32 /* Possible results of lookup using a nss_* function.  */
  33 enum nss_status
  34 {
  35   NSS_STATUS_TRYAGAIN = -2,
  36   NSS_STATUS_UNAVAIL,
  37   NSS_STATUS_NOTFOUND,
  38   NSS_STATUS_SUCCESS,
  39   NSS_STATUS_RETURN
  40 };
  41
  42
  43 /* Data structure used for the 'gethostbyname4_r' function.  */
  44 struct gaih_addrtuple
  45   {
  46     struct gaih_addrtuple *next;
  47     char *name;
  48     int family;
  49     uint32_t addr[4];
  50     uint32_t scopeid;
  51   };
  52
  53
  54 /* Overwrite service selection for database DBNAME using specification
  55    in STRING.
  56    This function should only be used by system programs which have to
  57    work around non-existing services (e.e., while booting).
  58    Attention: Using this function repeatedly will slowly eat up the
  59    whole memory since previous selection data cannot be freed.  */
  60 extern int __nss_configure_lookup (const char *__dbname,
  61                                    const char *__string) __THROW;
  62
  63 /* NSS-related types.  */
  64 struct __netgrent;
  65 struct aliasent;
  66 struct ether_addr;
  67 struct etherent;
  68 struct group;
  69 struct hostent;
  70 struct netent;
  71 struct passwd;
  72 struct protoent;
  73 struct rpcent;
  74 struct servent;
  75 struct sgrp;
  76 struct spwd;
  77 struct traced_file;
  78
  79 /* Types of functions exported from NSS service modules.  */
  80 typedef enum nss_status nss_endaliasent (void);
  81 typedef enum nss_status nss_endetherent (void);
  82 typedef enum nss_status nss_endgrent (void);
  83 typedef enum nss_status nss_endhostent (void);
  84 typedef enum nss_status nss_endnetent (void);
  85 typedef enum nss_status nss_endnetgrent (struct __netgrent *);
  86 typedef enum nss_status nss_endprotoent (void);
  87 typedef enum nss_status nss_endpwent (void);
  88 typedef enum nss_status nss_endrpcent (void);
  89 typedef enum nss_status nss_endservent (void);
  90 typedef enum nss_status nss_endsgent (void);
  91 typedef enum nss_status nss_endspent (void);
  92 typedef enum nss_status nss_getaliasbyname_r (const char *, struct aliasent *,
  93                                               char *, size_t, int *);
  94 typedef enum nss_status nss_getaliasent_r (struct aliasent *,
  95                                            char *, size_t, int *);
  96 typedef enum nss_status nss_getcanonname_r (const char *, char *, size_t,
  97                                             char **, int *, int *);
  98 typedef enum nss_status nss_getetherent_r (struct etherent *,
  99                                            char *, size_t, int *);
 100 typedef enum nss_status nss_getgrent_r (struct group *, char *, size_t, int *);
 101 typedef enum nss_status nss_getgrgid_r (__gid_t, struct group *,
 102                                         char *, size_t, int *);
 103 typedef enum nss_status nss_getgrnam_r (const char *, struct group *,
 104                                         char *, size_t, int *);
 105 typedef enum nss_status nss_gethostbyaddr2_r (const void *, __socklen_t, int,
 106                                               struct hostent *, char *, size_t,
 107                                               int *, int *, int32_t *);
 108 typedef enum nss_status nss_gethostbyaddr_r (const void *, __socklen_t, int,
 109                                              struct hostent *, char *, size_t,
 110                                              int *, int *);
 111 typedef enum nss_status nss_gethostbyname2_r (const char *, int,
 112                                               struct hostent *, char *, size_t,
 113                                               int *, int *);
 114 typedef enum nss_status nss_gethostbyname3_r (const char *, int,
 115                                               struct hostent *, char *, size_t,
 116                                               int *, int *, int32_t *,
 117                                               char **);
 118 typedef enum nss_status nss_gethostbyname4_r (const char *,
 119                                               struct gaih_addrtuple **,
 120                                               char *, size_t,
 121                                               int *, int *, int32_t *);
 122 typedef enum nss_status nss_gethostbyname_r (const char *, struct hostent *,
 123                                              char *, size_t, int *, int *);
 124 typedef enum nss_status nss_gethostent_r (struct hostent *, char *, size_t,
 125                                           int *, int *);
 126 typedef enum nss_status nss_gethostton_r (const char *, struct etherent *,
 127                                           char *, size_t, int *);
 128 typedef enum nss_status nss_getnetbyaddr_r (uint32_t, int, struct netent *,
 129                                             char *, size_t, int *, int *);
 130 typedef enum nss_status nss_getnetbyname_r (const char *, struct netent *,
 131                                             char *, size_t, int *, int *);
 132 typedef enum nss_status nss_getnetent_r (struct netent *,
 133                                          char *, size_t, int *, int *);
 134 typedef enum nss_status nss_getnetgrent_r (struct __netgrent *,
 135                                            char *, size_t, int *);
 136 typedef enum nss_status nss_getntohost_r (const struct ether_addr *,
 137                                           struct etherent *, char *, size_t,
 138                                           int *);
 139 typedef enum nss_status nss_getprotobyname_r (const char *, struct protoent *,
 140                                               char *, size_t, int *);
 141 typedef enum nss_status nss_getprotobynumber_r (int, struct protoent *,
 142                                                 char *, size_t, int *);
 143 typedef enum nss_status nss_getprotoent_r (struct protoent *,
 144                                            char *, size_t, int *);
 145 typedef enum nss_status nss_getpublickey (const char *, char *, int *);
 146 typedef enum nss_status nss_getpwent_r (struct passwd *,
 147                                         char *, size_t, int *);
 148 typedef enum nss_status nss_getpwnam_r (const char *, struct passwd *,
 149                                         char *, size_t, int *);
 150 typedef enum nss_status nss_getpwuid_r (__uid_t, struct passwd *,
 151                                         char *, size_t, int *);
 152 typedef enum nss_status nss_getrpcbyname_r (const char *, struct rpcent *,
 153                                             char *, size_t, int *);
 154 typedef enum nss_status nss_getrpcbynumber_r (int, struct rpcent *,
 155                                               char *, size_t, int *);
 156 typedef enum nss_status nss_getrpcent_r (struct rpcent *,
 157                                          char *, size_t, int *);
 158 typedef enum nss_status nss_getsecretkey (const char *, char *, char *, int *);
 159 typedef enum nss_status nss_getservbyname_r (const char *, const char *,
 160                                              struct servent *, char *, size_t,
 161                                              int *);
 162 typedef enum nss_status nss_getservbyport_r (int, const char *,
 163                                              struct servent *, char *, size_t,
 164                                              int *);
 165 typedef enum nss_status nss_getservent_r (struct servent *, char *, size_t,
 166                                           int *);
 167 typedef enum nss_status nss_getsgent_r (struct sgrp *, char *, size_t, int *);
 168 typedef enum nss_status nss_getsgnam_r (const char *, struct sgrp *,
 169                                         char *, size_t, int *);
 170 typedef enum nss_status nss_getspent_r (struct spwd *, char *, size_t, int *);
 171 typedef enum nss_status nss_getspnam_r (const char *, struct spwd *,
 172                                         char *, size_t, int *);
 173 typedef void nss_init (void (*) (size_t, struct traced_file *));
 174 typedef enum nss_status nss_initgroups_dyn (const char *, __gid_t, long int *,
 175                                             long int *, __gid_t **, long int,
 176                                             int *);
 177 typedef enum nss_status nss_netname2user (char [], __uid_t *, __gid_t *,
 178                                           int *, __gid_t *, int *);
 179 typedef enum nss_status nss_setaliasent (void);
 180 typedef enum nss_status nss_setetherent (int);
 181 typedef enum nss_status nss_setgrent (int);
 182 typedef enum nss_status nss_sethostent (int);
 183 typedef enum nss_status nss_setnetent (int);
 184 typedef enum nss_status nss_setnetgrent (const char *, struct __netgrent *);
 185 typedef enum nss_status nss_setprotoent (int);
 186 typedef enum nss_status nss_setpwent (int);
 187 typedef enum nss_status nss_setrpcent (int);
 188 typedef enum nss_status nss_setservent (int);
 189 typedef enum nss_status nss_setsgent (int);
 190 typedef enum nss_status nss_setspent (int);
 191
 192 /* Declare all NSS functions for MODULE.  */
 193 #define NSS_DECLARE_MODULE_FUNCTIONS(module)                            \
 194   extern nss_endaliasent _nss_##module##_endaliasent;                    \
 195   extern nss_endetherent _nss_##module##_endetherent;                    \
 196   extern nss_endgrent _nss_##module##_endgrent;                          \
 197   extern nss_endhostent _nss_##module##_endhostent;                      \
 198   extern nss_endnetent _nss_##module##_endnetent;                        \
 199   extern nss_endnetgrent _nss_##module##_endnetgrent;                    \
 200   extern nss_endprotoent _nss_##module##_endprotoent;                    \
 201   extern nss_endpwent _nss_##module##_endpwent;                          \
 202   extern nss_endrpcent _nss_##module##_endrpcent;                        \
 203   extern nss_endservent _nss_##module##_endservent;                      \
 204   extern nss_endsgent _nss_##module##_endsgent;                          \
 205   extern nss_endspent _nss_##module##_endspent;                          \
 206   extern nss_getaliasbyname_r _nss_##module##_getaliasbyname_r;          \
 207   extern nss_getaliasent_r _nss_##module##_getaliasent_r;                \
 208   extern nss_getcanonname_r _nss_##module##_getcanonname_r;              \
 209   extern nss_getetherent_r _nss_##module##_getetherent_r;                \
 210   extern nss_getgrent_r _nss_##module##_getgrent_r;                      \
 211   extern nss_getgrgid_r _nss_##module##_getgrgid_r;                      \
 212   extern nss_getgrnam_r _nss_##module##_getgrnam_r;                      \
 213   extern nss_gethostbyaddr2_r _nss_##module##_gethostbyaddr2_r;          \
 214   extern nss_gethostbyaddr_r _nss_##module##_gethostbyaddr_r;            \
 215   extern nss_gethostbyname2_r _nss_##module##_gethostbyname2_r;          \
 216   extern nss_gethostbyname3_r _nss_##module##_gethostbyname3_r;          \
 217   extern nss_gethostbyname4_r _nss_##module##_gethostbyname4_r;          \
 218   extern nss_gethostbyname_r _nss_##module##_gethostbyname_r;            \
 219   extern nss_gethostent_r _nss_##module##_gethostent_r;                  \
 220   extern nss_gethostton_r _nss_##module##_gethostton_r;                  \
 221   extern nss_getnetbyaddr_r _nss_##module##_getnetbyaddr_r;              \
 222   extern nss_getnetbyname_r _nss_##module##_getnetbyname_r;              \
 223   extern nss_getnetent_r _nss_##module##_getnetent_r;                    \
 224   extern nss_getnetgrent_r _nss_##module##_getnetgrent_r;                \
 225   extern nss_getntohost_r _nss_##module##_getntohost_r;                  \
 226   extern nss_getprotobyname_r _nss_##module##_getprotobyname_r;          \
 227   extern nss_getprotobynumber_r _nss_##module##_getprotobynumber_r;      \
 228   extern nss_getprotoent_r _nss_##module##_getprotoent_r;                \
 229   extern nss_getpublickey _nss_##module##_getpublickey;                  \
 230   extern nss_getpwent_r _nss_##module##_getpwent_r;                      \
 231   extern nss_getpwnam_r _nss_##module##_getpwnam_r;                      \
 232   extern nss_getpwuid_r _nss_##module##_getpwuid_r;                      \
 233   extern nss_getrpcbyname_r _nss_##module##_getrpcbyname_r;              \
 234   extern nss_getrpcbynumber_r _nss_##module##_getrpcbynumber_r;          \
 235   extern nss_getrpcent_r _nss_##module##_getrpcent_r;                    \
 236   extern nss_getsecretkey _nss_##module##_getsecretkey;                  \
 237   extern nss_getservbyname_r _nss_##module##_getservbyname_r;            \
 238   extern nss_getservbyport_r _nss_##module##_getservbyport_r;            \
 239   extern nss_getservent_r _nss_##module##_getservent_r;                  \
 240   extern nss_getsgent_r _nss_##module##_getsgent_r;                      \
 241   extern nss_getsgnam_r _nss_##module##_getsgnam_r;                      \
 242   extern nss_getspent_r _nss_##module##_getspent_r;                      \
 243   extern nss_getspnam_r _nss_##module##_getspnam_r;                      \
 244   extern nss_init _nss_##module##_init;                                  \
 245   extern nss_initgroups_dyn _nss_##module##_initgroups_dyn;              \
 246   extern nss_netname2user _nss_##module##_netname2user;                  \
 247   extern nss_setaliasent _nss_##module##_setaliasent;                    \
 248   extern nss_setetherent _nss_##module##_setetherent;                    \
 249   extern nss_setgrent _nss_##module##_setgrent;                          \
 250   extern nss_sethostent _nss_##module##_sethostent;                      \
 251   extern nss_setnetent _nss_##module##_setnetent;                        \
 252   extern nss_setnetgrent _nss_##module##_setnetgrent;                    \
 253   extern nss_setprotoent _nss_##module##_setprotoent;                    \
 254   extern nss_setpwent _nss_##module##_setpwent;                          \
 255   extern nss_setrpcent _nss_##module##_setrpcent;                        \
 256   extern nss_setservent _nss_##module##_setservent;                      \
 257   extern nss_setsgent _nss_##module##_setsgent;                          \
 258   extern nss_setspent _nss_##module##_setspent;                          \
 259
 260 __END_DECLS
 261
 262 #endif /* nss.h */