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1.8.7

    1: /*
    2:  * Copyright (c) 2010-2013 Todd C. Miller <Todd.Miller@courtesan.com>
    3:  *
    4:  * Permission to use, copy, modify, and distribute this software for any
    5:  * purpose with or without fee is hereby granted, provided that the above
    6:  * copyright notice and this permission notice appear in all copies.
    7:  *
    8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   15:  */
   16: 
   17: #ifndef _SUDOERS_PWUTIL_H
   18: #define _SUDOERS_PWUTIL_H
   19: 
   20: #define ptr_to_item(p) ((struct cache_item *)((char *)p - offsetof(struct cache_item_##p, p)))
   21: 
   22: /*
   23:  * Generic cache element.
   24:  */
   25: struct cache_item {
   26:     unsigned int refcnt;
   27:     /* key */
   28:     union {
   29: 	uid_t uid;
   30: 	gid_t gid;
   31: 	char *name;
   32:     } k;
   33:     /* datum */
   34:     union {
   35: 	struct passwd *pw;
   36: 	struct group *gr;
   37: 	struct group_list *grlist;
   38:     } d;
   39: };
   40: 
   41: /*
   42:  * Container structs to simpify size and offset calculations and guarantee
   43:  * proper aligment of struct passwd, group and group_list.
   44:  */
   45: struct cache_item_pw {
   46:     struct cache_item cache;
   47:     struct passwd pw;
   48: };
   49: 
   50: struct cache_item_gr {
   51:     struct cache_item cache;
   52:     struct group gr;
   53: };
   54: 
   55: struct cache_item_grlist {
   56:     struct cache_item cache;
   57:     struct group_list grlist;
   58:     /* actually bigger */
   59: };
   60: 
   61: struct cache_item *sudo_make_gritem(gid_t gid, const char *group);
   62: struct cache_item *sudo_make_grlist_item(struct passwd *pw, char * const *groups, char * const *gids);
   63: struct cache_item *sudo_make_pwitem(uid_t uid, const char *user);
   64: 
   65: #endif /* _SUDOERS_PWUTIL_H */