2 * Copyright (c) 1990, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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9 * notice, this list of conditions and the following disclaimer.
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11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)pw_util.c 8.3 (Berkeley) 4/2/94";
38 static const char rcsid[] =
43 * This file is used by all the "password" programs; vipw(8), chpass(1),
47 #include <sys/param.h>
49 #include <sys/resource.h>
65 #include "yppasswdd_extern.h"
75 /* Unlimited resource limits. */
76 rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
77 (void)setrlimit(RLIMIT_CPU, &rlim);
78 (void)setrlimit(RLIMIT_FSIZE, &rlim);
79 (void)setrlimit(RLIMIT_STACK, &rlim);
80 (void)setrlimit(RLIMIT_DATA, &rlim);
81 (void)setrlimit(RLIMIT_RSS, &rlim);
83 /* Don't drop core (not really necessary, but GP's). */
84 rlim.rlim_cur = rlim.rlim_max = 0;
85 (void)setrlimit(RLIMIT_CORE, &rlim);
87 /* Turn off signals. */
88 /* (void)signal(SIGALRM, SIG_IGN); */
89 (void)signal(SIGHUP, SIG_IGN);
90 (void)signal(SIGINT, SIG_IGN);
91 (void)signal(SIGPIPE, SIG_IGN);
92 (void)signal(SIGQUIT, SIG_IGN);
93 (void)signal(SIGTSTP, SIG_IGN);
94 (void)signal(SIGTTOU, SIG_IGN);
96 /* Create with exact permissions. */
106 * If the master password file doesn't exist, the system is hosed.
107 * Might as well try to build one. Set the close-on-exec bit so
108 * that users can't get at the encrypted passwords while editing.
109 * Open should allow flock'ing the file; see 4.4BSD. XXX
111 lockfd = open(passfile, O_RDONLY, 0);
112 if (lockfd < 0 || fcntl(lockfd, F_SETFD, 1) == -1) {
113 yp_error("%s: %s", passfile, strerror(errno));
116 if (flock(lockfd, LOCK_EX|LOCK_NB)) {
117 yp_error("%s: the password db file is busy", passfile);
126 static char path[MAXPATHLEN];
130 sprintf(path,"%s",passfile);
131 if ((p = strrchr(path, '/')))
135 strcpy(p, "pw.XXXXXX");
136 if ((fd = mkstemp(path)) == -1) {
137 yp_error("%s: %s", path, strerror(errno));
149 yp_error("rebuilding the database...");
150 (void)fflush(stderr);
151 /* Temporarily turn off SIGCHLD catching */
153 if (!(pid = vfork())) {
155 execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
157 execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", "-u", username,
160 pw_error(_PATH_PWD_MKDB, 1, 1);
163 /* Handle this ourselves. */
165 /* Put the handler back. Foo. */
167 if (pid == -1 || !WIFEXITED(pstat) || WEXITSTATUS(pstat) != 0) {
175 pw_error(name, err, eval)
179 if (err && name != NULL)
180 yp_error("%s", name);
182 yp_error("%s: unchanged", passfile);
183 (void)unlink(tempname);