lib/privs.h

   1 /*
   2  * Zebra privileges header.
   3  *
   4  * Copyright (C) 2003 Paul Jakma.
   5  *
   6  * This file is part of GNU Zebra.
   7  *
   8  * GNU Zebra is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * GNU Zebra is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  20  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  21  * 02111-1307, USA.
  22  */
  23
  24 #ifndef _ZEBRA_PRIVS_H
  25 #define _ZEBRA_PRIVS_H
  26
  27 /* list of zebra capabilities */
  28 typedef enum
  29 {
  30   ZCAP_SETID,
  31   ZCAP_BIND,
  32   ZCAP_NET_ADMIN,
  33   ZCAP_SYS_ADMIN,
  34   ZCAP_NET_RAW,
  35   ZCAP_CHROOT,
  36   ZCAP_NICE,
  37   ZCAP_PTRACE,
  38   ZCAP_DAC_OVERRIDE,
  39   ZCAP_READ_SEARCH,
  40   ZCAP_FOWNER,
  41   ZCAP_MAX
  42 } zebra_capabilities_t;
  43
  44 typedef enum
  45 {
  46   ZPRIVS_LOWERED,
  47   ZPRIVS_RAISED,
  48   ZPRIVS_UNKNOWN,
  49 } zebra_privs_current_t;
  50
  51 typedef enum
  52 {
  53   ZPRIVS_RAISE,
  54   ZPRIVS_LOWER,
  55 } zebra_privs_ops_t;
  56
  57 struct zebra_privs_t
  58 {
  59   zebra_capabilities_t *caps_p;       /* caps required for operation */
  60   zebra_capabilities_t *caps_i;       /* caps to allow inheritance of */
  61   int cap_num_p;                      /* number of caps in arrays */
  62   int cap_num_i;
  63   const char *user;                   /* user and group to run as */
  64   const char *group;
  65   const char *vty_group;              /* group to chown vty socket to */
  66   /* methods */
  67   int
  68     (*change) (zebra_privs_ops_t);    /* change privileges, 0 on success */
  69   zebra_privs_current_t
  70     (*current_state) (void);          /* current privilege state */
  71 };
  72
  73 struct zprivs_ids_t
  74 {
  75   /* -1 is undefined */
  76   uid_t uid_priv;                     /* privileged uid */
  77   uid_t uid_normal;                   /* normal uid */
  78   gid_t gid_priv;                     /* privileged uid */
  79   gid_t gid_normal;                   /* normal uid */
  80   gid_t gid_vty;                      /* vty gid */
  81 };
  82
  83   /* initialise zebra privileges */
  84 extern void zprivs_init (struct zebra_privs_t *zprivs);
  85   /* drop all and terminate privileges */
  86 extern void zprivs_terminate (struct zebra_privs_t *);
  87   /* query for runtime uid's and gid's, eg vty needs this */
  88 extern void zprivs_get_ids(struct zprivs_ids_t *);
  89
  90 #endif /* _ZEBRA_PRIVS_H */