985ab1dd3e
resolve group IDs -> names when needed. If the sudoers file doesn't contain groups we will no longer try to resolve all the user's group IDs to names, which can be expensive on some systems.
75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/*
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* Copyright (c) 2010-2013 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef SUDOERS_PWUTIL_H
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#define SUDOERS_PWUTIL_H
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#define ptr_to_item(p) ((struct cache_item *)((char *)p - offsetof(struct cache_item_##p, p)))
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/*
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* Generic cache element.
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*/
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struct cache_item {
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unsigned int refcnt;
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char registry[16];
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/* key */
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union {
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uid_t uid;
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gid_t gid;
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char *name;
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} k;
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/* datum */
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union {
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struct passwd *pw;
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struct group *gr;
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struct group_list *grlist;
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struct gid_list *gidlist;
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} d;
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};
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/*
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* Container structs to simpify size and offset calculations and guarantee
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* proper aligment of struct passwd, group, gid_list and group_list.
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*/
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struct cache_item_pw {
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struct cache_item cache;
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struct passwd pw;
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};
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struct cache_item_gr {
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struct cache_item cache;
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struct group gr;
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};
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struct cache_item_grlist {
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struct cache_item cache;
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struct group_list grlist;
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/* actually bigger */
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};
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struct cache_item_gidlist {
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struct cache_item cache;
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struct gid_list gidlist;
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/* actually bigger */
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};
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struct cache_item *sudo_make_gritem(gid_t gid, const char *group);
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struct cache_item *sudo_make_grlist_item(const struct passwd *pw, char * const *groups);
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struct cache_item *sudo_make_gidlist_item(const struct passwd *pw, char * const *gids);
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struct cache_item *sudo_make_pwitem(uid_t uid, const char *user);
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#endif /* SUDOERS_PWUTIL_H */
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