4 Copyright (c) 2000 The Regents of the University of Michigan.
7 Copyright (c) 2000 Dug Song <dugsong@UMICH.EDU>.
8 Copyright (c) 2002 Andy Adamson <andros@UMICH.EDU>.
9 Copyright (c) 2002 Marius Aamodt Eriksen <marius@UMICH.EDU>.
10 All rights reserved, all wrongs reversed.
12 Copyright (c) 2014, Intel Corporation.
14 Redistribution and use in source and binary forms, with or without
15 modification, are permitted provided that the following conditions
18 1. Redistributions of source code must retain the above copyright
19 notice, this list of conditions and the following disclaimer.
20 2. Redistributions in binary form must reproduce the above copyright
21 notice, this list of conditions and the following disclaimer in the
22 documentation and/or other materials provided with the distribution.
23 3. Neither the name of the University nor the names of its
24 contributors may be used to endorse or promote products derived
25 from this software without specific prior written permission.
27 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
28 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
29 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
30 DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
34 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43 #include <sys/types.h>
44 #include <sys/param.h>
45 #include <sys/socket.h>
57 #include <libcfs/util/string.h>
62 #include "krb5_util.h"
65 char *pipefs_dir = GSSD_PIPEFS_DIR;
66 char pipefs_nfsdir[PATH_MAX] = GSSD_PIPEFS_DIR;
67 char *keytabfile = GSSD_DEFAULT_KEYTAB_FILE;
68 char *ccachedir = GSSD_DEFAULT_CRED_DIR;
70 int lgssd_mutex_downcall = -1;
72 static int lgssd_create_mutex(int *semid)
77 id = semget(IPC_PRIVATE, 1, IPC_CREAT);
79 printerr(0, "semget: %s\n", strerror(errno));
84 if (semctl(id, 0, SETVAL, arg) != 0) {
85 printerr(0, "semctl: %s\n", strerror(errno));
86 semctl(id, 1, IPC_RMID, arg);
94 void lgssd_init_mutexs(void)
96 if (lgssd_create_mutex(&lgssd_mutex_downcall)) {
97 printerr(0, "can't create downcall mutex\n");
102 void lgssd_fini_mutexs(void)
106 if (lgssd_mutex_downcall != -1)
107 semctl(lgssd_mutex_downcall, 1, IPC_RMID, arg);
110 void lgssd_mutex_get(int semid)
118 rc = semop(semid, &op, 1);
120 printerr(0, "exit on mutex_get err %d: %s\n",
121 rc, strerror(errno));
126 void lgssd_mutex_put(int semid)
133 rc = semop(semid, &op, 1);
135 printerr(0, "ignore mutex_put err %d: %s\n",
136 rc, strerror(errno));
140 static void lgssd_cleanup(void)
144 /* make sure all children finished */
146 child_pid = waitpid(-1, NULL, 0);
150 printerr(3, "cleanup: child %d terminated\n", child_pid);
155 /* destroy krb5 machine creds */
156 gssd_destroy_krb5_machine_creds();
162 printerr(1, "exiting on signal %d\n", signal);
170 /* don't exit on SIGHUP */
171 printerr(1, "Received SIGHUP... Ignoring.\n");
175 usage(char *progname)
177 fprintf(stderr, "usage: %s [-f] [-v] [-p pipefsdir] [-k keytab] [-d ccachedir]\n",
183 main(int argc, char *argv[])
191 while ((opt = getopt(argc, argv, "fvrmMp:k:d:")) != -1) {
203 pipefs_dir = strdup(optarg);
205 errx(1, "pipefs path name not aquired");
208 keytabfile = strdup(optarg);
210 errx(1, "keytab path name not aquired");
213 ccachedir = strdup(optarg);
215 errx(1, "ccachedir path name not aquired");
223 if ((progname = strrchr(argv[0], '/')))
228 initerr(progname, verbosity, fg);
230 if (gssd_check_mechs() != 0)
231 errx(1, "Problem with gssapi library");
233 if (gssd_get_local_realm())
234 errx(1, "get local realm");
236 if (!fg && daemon(0, 0) < 0)
239 /* This should be checked _after_ daemon(), because we need to own
240 * the undo-able semaphore by this process
242 gssd_init_unique(GSSD_CLI);
244 /* Process keytab file and get machine credentials. This will modify
245 * disk status so do it after we are sure we are the only instance
247 if (gssd_refresh_krb5_machine_creds())
250 signal(SIGINT, sig_die);
251 signal(SIGTERM, sig_die);
252 signal(SIGHUP, sig_hup);
256 printerr(0, "lgssd initialized and ready to serve\n");
260 printerr(0, "lgssd exiting\n");