+++ /dev/null
-/*
- gssd.c
-
- Copyright (c) 2000 The Regents of the University of Michigan.
- All rights reserved.
-
- Copyright (c) 2000 Dug Song <dugsong@UMICH.EDU>.
- Copyright (c) 2002 Andy Adamson <andros@UMICH.EDU>.
- Copyright (c) 2002 Marius Aamodt Eriksen <marius@UMICH.EDU>.
- All rights reserved, all wrongs reversed.
-
- Copyright (c) 2014, Intel Corporation.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
- 3. Neither the name of the University nor the names of its
- contributors may be used to endorse or promote products derived
- from this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-*/
-
-#include "config.h"
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/wait.h>
-#include <sys/ipc.h>
-#include <sys/sem.h>
-
-#include <unistd.h>
-#include <err.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <signal.h>
-#include <errno.h>
-#include <libcfs/util/string.h>
-
-#include "gssd.h"
-#include "err_util.h"
-#include "gss_util.h"
-#include "krb5_util.h"
-#include "lsupport.h"
-
-char *pipefs_dir = GSSD_PIPEFS_DIR;
-char pipefs_nfsdir[PATH_MAX] = GSSD_PIPEFS_DIR;
-char *keytabfile = GSSD_DEFAULT_KEYTAB_FILE;
-char *ccachedir = GSSD_DEFAULT_CRED_DIR;
-int use_memcache = 0;
-int lgssd_mutex_downcall = -1;
-
-static int lgssd_create_mutex(int *semid)
-{
- int id;
- int arg;
-
- id = semget(IPC_PRIVATE, 1, IPC_CREAT);
- if (id == -1) {
- printerr(0, "semget: %s\n", strerror(errno));
- return -1;
- }
-
- arg = 1;
- if (semctl(id, 0, SETVAL, arg) != 0) {
- printerr(0, "semctl: %s\n", strerror(errno));
- semctl(id, 1, IPC_RMID, arg);
- return -1;
- }
-
- *semid = id;
- return 0;
-}
-
-void lgssd_init_mutexs(void)
-{
- if (lgssd_create_mutex(&lgssd_mutex_downcall)) {
- printerr(0, "can't create downcall mutex\n");
- exit(1);
- }
-}
-
-void lgssd_fini_mutexs(void)
-{
- int arg = 0;
-
- if (lgssd_mutex_downcall != -1)
- semctl(lgssd_mutex_downcall, 1, IPC_RMID, arg);
-}
-
-void lgssd_mutex_get(int semid)
-{
- struct sembuf op = {
- .sem_op = -1,
- .sem_flag = SEM_UNDO
- };
- int rc;
-
- rc = semop(semid, &op, 1);
- if (rc != 0) {
- printerr(0, "exit on mutex_get err %d: %s\n",
- rc, strerror(errno));
- exit(1);
- }
-}
-
-void lgssd_mutex_put(int semid)
-{
- struct sembuf op = {
- .sem_op = 1
- };
- int rc;
-
- rc = semop(semid, &op, 1);
- if (rc != 0) {
- printerr(0, "ignore mutex_put err %d: %s\n",
- rc, strerror(errno));
- }
-}
-
-static void lgssd_cleanup(void)
-{
- pid_t child_pid;
-
- /* make sure all children finished */
- while (1) {
- child_pid = waitpid(-1, NULL, 0);
- if (child_pid < 0)
- break;
-
- printerr(3, "cleanup: child %d terminated\n", child_pid);
- }
-
- lgssd_fini_mutexs();
-
- /* destroy krb5 machine creds */
- gssd_destroy_krb5_machine_creds();
-}
-
-void
-sig_die(int signal)
-{
- printerr(1, "exiting on signal %d\n", signal);
- lgssd_cleanup();
- exit(1);
-}
-
-void
-sig_hup(int signal)
-{
- /* don't exit on SIGHUP */
- printerr(1, "Received SIGHUP... Ignoring.\n");
-}
-
-static void
-usage(char *progname)
-{
- fprintf(stderr, "usage: %s [-f] [-v] [-p pipefsdir] [-k keytab] [-d ccachedir]\n",
- progname);
- exit(1);
-}
-
-int
-main(int argc, char *argv[])
-{
- int fg = 0;
- int verbosity = 0;
- int opt;
- extern char *optarg;
- char *progname;
-
- while ((opt = getopt(argc, argv, "fvrmMp:k:d:")) != -1) {
- switch (opt) {
- case 'f':
- fg = 1;
- break;
- case 'M':
- use_memcache = 1;
- break;
- case 'v':
- verbosity++;
- break;
- case 'p':
- pipefs_dir = strdup(optarg);
- if (!pipe_dir)
- errx(1, "pipefs path name not aquired");
- break;
- case 'k':
- keytabfile = strdup(optarg);
- if (!keytab_file)
- errx(1, "keytab path name not aquired");
- break;
- case 'd':
- ccachedir = strdup(optarg);
- if (!ccachedir)
- errx(1, "ccachedir path name not aquired");
- break;
- default:
- usage(argv[0]);
- break;
- }
- }
-
- if ((progname = strrchr(argv[0], '/')))
- progname++;
- else
- progname = argv[0];
-
- initerr(progname, verbosity, fg);
-
- if (gssd_check_mechs() != 0)
- errx(1, "Problem with gssapi library");
-
- if (gssd_get_local_realm())
- errx(1, "get local realm");
-
- if (!fg && daemon(0, 0) < 0)
- errx(1, "fork");
-
- /* This should be checked _after_ daemon(), because we need to own
- * the undo-able semaphore by this process
- */
- gssd_init_unique(GSSD_CLI);
-
- /* Process keytab file and get machine credentials. This will modify
- * disk status so do it after we are sure we are the only instance
- */
- if (gssd_refresh_krb5_machine_creds())
- return -1;
-
- signal(SIGINT, sig_die);
- signal(SIGTERM, sig_die);
- signal(SIGHUP, sig_hup);
-
- lgssd_init_mutexs();
-
- printerr(0, "lgssd initialized and ready to serve\n");
- lgssd_run();
-
- lgssd_cleanup();
- printerr(0, "lgssd exiting\n");
- return 0;
-}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff