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>
65 DIR *dir = opendir("/proc/self/fd");
70 while ((d = readdir(dir)) != NULL) {
72 long n = strtol(d->d_name, &endp, 10);
73 if (*endp != '\0' && n >= min && n != dfd)
78 int fd = sysconf(_SC_OPEN_MAX);
84 * mydaemon creates a pipe between the partent and child
85 * process. The parent process will wait until the
86 * child dies or writes a '1' on the pipe signaling
87 * that it started successfully.
89 int pipefds[2] = { -1, -1};
92 mydaemon(int nochdir, int noclose)
94 int pid, status, tempfd;
96 if (pipe(pipefds) < 0) {
97 printerr(1, "mydaemon: pipe() failed: errno %d (%s)\n",
98 errno, strerror(errno));
101 if ((pid = fork ()) < 0) {
102 printerr(1, "mydaemon: fork() failed: errno %d (%s)\n",
103 errno, strerror(errno));
109 * Parent. Wait for status from child.
112 if (read(pipefds[0], &status, 1) != 1)
120 if (chdir ("/") == -1) {
121 printerr(1, "mydaemon: chdir() failed: errno %d (%s)\n",
122 errno, strerror(errno));
127 while (pipefds[1] <= 2) {
128 pipefds[1] = dup(pipefds[1]);
129 if (pipefds[1] < 0) {
130 printerr(1, "mydaemon: dup() failed: errno %d (%s)\n",
131 errno, strerror(errno));
137 tempfd = open("/dev/null", O_RDWR);
152 if (pipefds[1] > 0) {
153 write(pipefds[1], &status, 1);
162 /* destroy krb5 machine creds */
164 printerr(1, "exiting on signal %d\n", signal);
171 /* don't exit on SIGHUP */
172 printerr(1, "Received SIGHUP... Ignoring.\n");
177 usage(char *progname)
179 fprintf(stderr, "usage: %s [-n] [-f] [-v] [-r]\n",
185 main(int argc, char *argv[])
191 int must_srv_mds = 0, must_srv_oss = 0;
195 while ((opt = getopt(argc, argv, "fvrnp:")) != -1) {
220 if ((progname = strrchr(argv[0], '/')))
225 initerr(progname, verbosity, fg);
227 if (gssd_check_mechs() != 0) {
228 printerr(0, "ERROR: Problem with gssapi library\n");
232 if (gssd_get_local_realm()) {
233 printerr(0, "ERROR: Can't get Local Kerberos realm\n");
237 if (get_creds && gssd_prepare_creds(must_srv_mds, must_srv_oss)) {
238 printerr(0, "unable to obtain root (machine) credentials\n");
239 printerr(0, "do you have a keytab entry for "
240 "nfs/<your.host>@<YOUR.REALM> in "
241 "/etc/krb5.keytab?\n");
249 * XXX: There is risk of memory leak for missing call
250 * cleanup_mapping() for SIGKILL and SIGSTOP.
252 signal(SIGINT, sig_die);
253 signal(SIGTERM, sig_die);
254 signal(SIGHUP, sig_hup);
259 gssd_init_unique(GSSD_SVC);
263 printerr(0, "gssd_run returned!\n");