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Annotation of embedaddon/sudo/plugins/sudoers/pwutil.h, revision 1.1

1.1     ! misho       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 */