2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
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15 * This product includes software developed by the University of
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33 * @(#)pwcache.c 8.1 (Berkeley) 6/4/93
36 #include <sys/types.h>
44 #define NCACHE 64 /* power of 2 */
45 #define MASK (NCACHE - 1) /* bits to store with */
48 user_from_uid(uid, nouser)
52 static struct ncache {
55 char name[UT_NAMESIZE + 1];
58 register struct passwd *pw;
59 register struct ncache *cp;
61 cp = c_uid + (uid & MASK);
62 if (cp->uid != uid || !*cp->name) {
71 (void)strncpy(cp->name, pw->pw_name, UT_NAMESIZE);
72 cp->name[UT_NAMESIZE] = '\0';
75 (void)snprintf(cp->name, UT_NAMESIZE, "%u", uid);
80 return ((nouser && !cp->found) ? NULL : cp->name);
84 group_from_gid(gid, nogroup)
88 static struct ncache {
91 char name[UT_NAMESIZE + 1];
97 cp = c_gid + (gid & MASK);
98 if (cp->gid != gid || !*cp->name) {
107 (void)strncpy(cp->name, gr->gr_name, UT_NAMESIZE);
108 cp->name[UT_NAMESIZE] = '\0';
111 (void)snprintf(cp->name, UT_NAMESIZE, "%u", gid);
116 return ((nogroup && !cp->found) ? NULL : cp->name);