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33 * @(#)pw_util.c 8.3 (Berkeley) 4/2/94
34 * $FreeBSD: src/usr.sbin/rpc.yppasswdd/pw_util.c,v 1.4.2.1 2002/02/15 00:46:57 des Exp $
35 * $DragonFly: src/usr.sbin/rpc.yppasswdd/pw_util.c,v 1.3 2004/12/18 22:48:14 swildner Exp $
39 * This file is used by all the "password" programs; vipw(8), chpass(1),
43 #include <sys/param.h>
45 #include <sys/resource.h>
61 #include "yppasswdd_extern.h"
71 /* Unlimited resource limits. */
72 rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
73 setrlimit(RLIMIT_CPU, &rlim);
74 setrlimit(RLIMIT_FSIZE, &rlim);
75 setrlimit(RLIMIT_STACK, &rlim);
76 setrlimit(RLIMIT_DATA, &rlim);
77 setrlimit(RLIMIT_RSS, &rlim);
79 /* Don't drop core (not really necessary, but GP's). */
80 rlim.rlim_cur = rlim.rlim_max = 0;
81 setrlimit(RLIMIT_CORE, &rlim);
83 /* Turn off signals. */
84 /* signal(SIGALRM, SIG_IGN); */
85 signal(SIGHUP, SIG_IGN);
86 signal(SIGINT, SIG_IGN);
87 signal(SIGPIPE, SIG_IGN);
88 signal(SIGQUIT, SIG_IGN);
89 signal(SIGTSTP, SIG_IGN);
90 signal(SIGTTOU, SIG_IGN);
92 /* Create with exact permissions. */
102 * If the master password file doesn't exist, the system is hosed.
103 * Might as well try to build one. Set the close-on-exec bit so
104 * that users can't get at the encrypted passwords while editing.
105 * Open should allow flock'ing the file; see 4.4BSD. XXX
107 lockfd = open(passfile, O_RDONLY, 0);
108 if (lockfd < 0 || fcntl(lockfd, F_SETFD, 1) == -1) {
109 yp_error("%s: %s", passfile, strerror(errno));
112 if (flock(lockfd, LOCK_EX|LOCK_NB)) {
113 yp_error("%s: the password db file is busy", passfile);
122 static char path[MAXPATHLEN];
126 sprintf(path,"%s",passfile);
127 if ((p = strrchr(path, '/')))
131 strcpy(p, "pw.XXXXXX");
132 if ((fd = mkstemp(path)) == -1) {
133 yp_error("%s: %s", path, strerror(errno));
145 yp_error("rebuilding the database...");
147 /* Temporarily turn off SIGCHLD catching */
149 if (!(pid = vfork())) {
151 execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
153 execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", "-u", username,
156 pw_error(_PATH_PWD_MKDB, 1, 1);
159 /* Handle this ourselves. */
161 /* Put the handler back. Foo. */
163 if (pid == -1 || !WIFEXITED(pstat) || WEXITSTATUS(pstat) != 0) {
171 pw_error(name, err, eval)
175 if (err && name != NULL)
176 yp_error("%s", name);
178 yp_error("%s: unchanged", passfile);