1 /* $OpenBSD: pwcache.c,v 1.9 2005/08/08 08:05:34 espie Exp $ */
3 * Copyright (c) 1989, 1993
4 * The Regents of the University of California. All rights reserved.
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11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
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15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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31 /* OPENBSD ORIGINAL: lib/libc/gen/pwcache.c */
35 #include <sys/types.h>
43 #define NCACHE 64 /* power of 2 */
44 #define MASK (NCACHE - 1) /* bits to store with */
46 #ifndef HAVE_USER_FROM_UID
48 user_from_uid(uid_t uid, int nouser)
50 static struct ncache {
55 static char nbuf[15]; /* 32 bits == 10 digits */
59 cp = c_uid + (uid & MASK);
60 if (cp->uid != uid || cp->name == NULL) {
62 #ifdef HAVE_SETPASSENT
67 if ((pw = getpwuid(uid)) == NULL) {
70 (void)snprintf(nbuf, sizeof(nbuf), "%u", uid);
75 cp->name = strdup(pw ? pw->pw_name : nbuf);
81 #ifndef HAVE_GROUP_FROM_GID
83 group_from_gid(gid_t gid, int nogroup)
85 static struct ncache {
90 static char nbuf[15]; /* 32 bits == 10 digits */
94 cp = c_gid + (gid & MASK);
95 if (cp->gid != gid || cp->name == NULL) {
97 #ifdef HAVE_SETGROUPENT
102 if ((gr = getgrgid(gid)) == NULL) {
105 (void)snprintf(nbuf, sizeof(nbuf), "%u", gid);
108 if (cp->name != NULL)
110 cp->name = strdup(gr ? gr->gr_name : nbuf);