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 Copyright (c) 2002 J. Bruce Fields <bfields@UMICH.EDU>.
11 All rights reserved, all wrongs reversed.
13 Redistribution and use in source and binary forms, with or without
14 modification, are permitted provided that the following conditions
17 1. Redistributions of source code must retain the above copyright
18 notice, this list of conditions and the following disclaimer.
19 2. Redistributions in binary form must reproduce the above copyright
20 notice, this list of conditions and the following disclaimer in the
21 documentation and/or other materials provided with the distribution.
22 3. Neither the name of the University nor the names of its
23 contributors may be used to endorse or promote products derived
24 from this software without specific prior written permission.
26 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
27 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
28 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
29 DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
33 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 #include <sys/param.h>
43 #include <sys/types.h>
45 #include <sys/socket.h>
62 * mydaemon creates a pipe between the partent and child
63 * process. The parent process will wait until the
64 * child dies or writes a '1' on the pipe signaling
65 * that it started successfully.
67 int pipefds[2] = { -1, -1};
70 mydaemon(int nochdir, int noclose)
72 int pid, status, tempfd, fdmax, filedes;
74 if (pipe(pipefds) < 0) {
75 printerr(1, "mydaemon: pipe() failed: errno %d (%s)\n",
76 errno, strerror(errno));
79 if ((pid = fork ()) < 0) {
80 printerr(1, "mydaemon: fork() failed: errno %d (%s)\n",
81 errno, strerror(errno));
87 * Parent. Wait for status from child.
90 if (read(pipefds[0], &status, 1) != 1)
98 if (chdir ("/") == -1) {
99 printerr(1, "mydaemon: chdir() failed: errno %d (%s)\n",
100 errno, strerror(errno));
105 while (pipefds[1] <= 2) {
106 pipefds[1] = dup(pipefds[1]);
107 if (pipefds[1] < 0) {
108 printerr(1, "mydaemon: dup() failed: errno %d (%s)\n",
109 errno, strerror(errno));
115 tempfd = open("/dev/null", O_RDWR);
116 close(0); dup2(tempfd, 0);
117 close(1); dup2(tempfd, 1);
118 close(2); dup2(tempfd, 2);
119 fdmax = sysconf (_SC_OPEN_MAX);
120 for (filedes = 3; filedes < fdmax; filedes++)
121 if (filedes != pipefds[1])
133 if (pipefds[1] > 0) {
134 write(pipefds[1], &status, 1);
143 /* destroy krb5 machine creds */
144 printerr(1, "exiting on signal %d\n", signal);
151 /* don't exit on SIGHUP */
152 printerr(1, "Received SIGHUP... Ignoring.\n");
157 usage(char *progname)
159 fprintf(stderr, "usage: %s [-n] [-f] [-v] [-r]\n",
165 main(int argc, char *argv[])
170 int rpc_verbosity = 0;
175 while ((opt = getopt(argc, argv, "fvrnp:")) != -1) {
195 if ((progname = strrchr(argv[0], '/')))
200 initerr(progname, verbosity, fg);
201 #ifdef HAVE_AUTHGSS_SET_DEBUG_LEVEL
202 authgss_set_debug_level(rpc_verbosity);
204 if (rpc_verbosity > 0)
205 printerr(0, "Warning: rpcsec_gss library does not "
206 "support setting debug level\n");
212 signal(SIGINT, sig_die);
213 signal(SIGTERM, sig_die);
214 signal(SIGHUP, sig_hup);
216 if (get_creds && !gssd_acquire_cred(GSSD_SERVICE_NAME)) {
217 printerr(0, "unable to obtain root (machine) credentials\n");
218 printerr(0, "do you have a keytab entry for "
219 "nfs/<your.host>@<YOUR.REALM> in "
220 "/etc/krb5.keytab?\n");
228 printerr(0, "gssd_run returned!\n");