845 lines
22 KiB
C
845 lines
22 KiB
C
/*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1989, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif not lint
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)nfsd.c 8.9 (Berkeley) 3/29/95";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif not lint
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#include <sys/param.h>
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#include <sys/syslog.h>
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#include <sys/wait.h>
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#include <sys/mount.h>
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#include <sys/linker.h>
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#include <sys/module.h>
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#include <rpc/rpc.h>
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#include <rpc/pmap_clnt.h>
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#include <netdb.h>
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#include <arpa/inet.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfsserver/nfs.h>
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#include <err.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <unistd.h>
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#include <netdb.h>
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/* Global defs */
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#ifdef DEBUG
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#define syslog(e, s...) fprintf(stderr,s)
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int debug = 1;
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#else
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int debug = 0;
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#endif
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struct nfsd_srvargs nsd;
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#define MAXNFSDCNT 20
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#define DEFNFSDCNT 4
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pid_t children[MAXNFSDCNT]; /* PIDs of children */
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int nfsdcnt; /* number of children */
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void cleanup(int);
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void child_cleanup(int);
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void killchildren(void);
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void nfsd_exit(int);
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void nonfs(int);
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void reapchild(int);
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int setbindhost(struct addrinfo **ia, const char *bindhost,
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struct addrinfo hints);
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void start_server(int);
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void unregistration(void);
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void usage(void);
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/*
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* Nfs server daemon mostly just a user context for nfssvc()
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*
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* 1 - do file descriptor and signal cleanup
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* 2 - fork the nfsd(s)
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* 3 - create server socket(s)
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* 4 - register socket with rpcbind
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*
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* For connectionless protocols, just pass the socket into the kernel via.
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* nfssvc().
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* For connection based sockets, loop doing accepts. When you get a new
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* socket from accept, pass the msgsock into the kernel via. nfssvc().
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* The arguments are:
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* -r - reregister with rpcbind
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* -d - unregister with rpcbind
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* -t - support tcp nfs clients
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* -u - support udp nfs clients
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* followed by "n" which is the number of nfsds' to fork off
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*/
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int
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main(argc, argv, envp)
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int argc;
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char *argv[], *envp[];
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{
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struct nfsd_args nfsdargs;
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struct addrinfo *ai_udp, *ai_tcp, *ai_udp6, *ai_tcp6, hints;
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struct netconfig *nconf_udp, *nconf_tcp, *nconf_udp6, *nconf_tcp6;
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struct netbuf nb_udp, nb_tcp, nb_udp6, nb_tcp6;
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struct sockaddr_in inetpeer;
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struct sockaddr_in6 inet6peer;
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fd_set ready, sockbits;
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fd_set v4bits, v6bits;
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int ch, connect_type_cnt, i, len, maxsock, msgsock;
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int on = 1, unregister, reregister, sock;
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int tcp6sock, ip6flag, tcpflag, tcpsock;
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int udpflag, ecode, s, srvcnt;
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int bindhostc, bindanyflag, rpcbreg, rpcbregcnt;
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char **bindhost = NULL;
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pid_t pid;
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if (modfind("nfsserver") < 0) {
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/* Not present in kernel, try loading it */
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if (kldload("nfsserver") < 0 || modfind("nfsserver") < 0)
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errx(1, "NFS serveris not available");
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}
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nfsdcnt = DEFNFSDCNT;
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unregister = reregister = tcpflag = maxsock = 0;
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bindanyflag = udpflag = connect_type_cnt = bindhostc = 0;
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#define GETOPT "ah:n:rdtu"
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#define USAGE "[-ardtu] [-n num_servers] [-h bindip]"
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while ((ch = getopt(argc, argv, GETOPT)) != -1)
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switch (ch) {
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case 'a':
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bindanyflag = 1;
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break;
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case 'n':
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nfsdcnt = atoi(optarg);
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if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) {
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warnx("nfsd count %d; reset to %d", nfsdcnt,
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DEFNFSDCNT);
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nfsdcnt = DEFNFSDCNT;
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}
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break;
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case 'h':
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bindhostc++;
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bindhost = realloc(bindhost,sizeof(char *)*bindhostc);
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if (bindhost == NULL)
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errx(1, "Out of memory");
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bindhost[bindhostc-1] = strdup(optarg);
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if (bindhost[bindhostc-1] == NULL)
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errx(1, "Out of memory");
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break;
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case 'r':
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reregister = 1;
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break;
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case 'd':
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unregister = 1;
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break;
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case 't':
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tcpflag = 1;
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break;
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case 'u':
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udpflag = 1;
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break;
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default:
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case '?':
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usage();
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};
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if (!tcpflag && !udpflag)
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udpflag = 1;
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argv += optind;
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argc -= optind;
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/*
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* XXX
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* Backward compatibility, trailing number is the count of daemons.
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*/
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if (argc > 1)
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usage();
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if (argc == 1) {
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nfsdcnt = atoi(argv[0]);
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if (nfsdcnt < 1 || nfsdcnt > MAXNFSDCNT) {
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warnx("nfsd count %d; reset to %d", nfsdcnt,
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DEFNFSDCNT);
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nfsdcnt = DEFNFSDCNT;
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}
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}
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ip6flag = 1;
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s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
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if (s == -1) {
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if (errno != EPROTONOSUPPORT)
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err(1, "socket");
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ip6flag = 0;
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} else if (getnetconfigent("udp6") == NULL ||
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getnetconfigent("tcp6") == NULL) {
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ip6flag = 0;
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}
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if (s != -1)
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close(s);
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if (bindhostc == 0 || bindanyflag) {
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bindhostc++;
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bindhost = realloc(bindhost,sizeof(char *)*bindhostc);
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if (bindhost == NULL)
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errx(1, "Out of memory");
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bindhost[bindhostc-1] = strdup("*");
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if (bindhost[bindhostc-1] == NULL)
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errx(1, "Out of memory");
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}
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if (unregister) {
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unregistration();
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exit (0);
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}
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if (reregister) {
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if (udpflag) {
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memset(&hints, 0, sizeof hints);
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hints.ai_flags = AI_PASSIVE;
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_protocol = IPPROTO_UDP;
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ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp);
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if (ecode != 0)
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err(1, "getaddrinfo udp: %s", gai_strerror(ecode));
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nconf_udp = getnetconfigent("udp");
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if (nconf_udp == NULL)
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err(1, "getnetconfigent udp failed");
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nb_udp.buf = ai_udp->ai_addr;
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nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen;
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if ((!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp)) ||
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(!rpcb_set(RPCPROG_NFS, 3, nconf_udp, &nb_udp)))
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err(1, "rpcb_set udp failed");
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freeaddrinfo(ai_udp);
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}
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if (udpflag && ip6flag) {
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memset(&hints, 0, sizeof hints);
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hints.ai_flags = AI_PASSIVE;
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hints.ai_family = AF_INET6;
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_protocol = IPPROTO_UDP;
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ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6);
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if (ecode != 0)
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err(1, "getaddrinfo udp6: %s", gai_strerror(ecode));
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nconf_udp6 = getnetconfigent("udp6");
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if (nconf_udp6 == NULL)
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err(1, "getnetconfigent udp6 failed");
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nb_udp6.buf = ai_udp6->ai_addr;
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nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen;
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if ((!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6)) ||
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(!rpcb_set(RPCPROG_NFS, 3, nconf_udp6, &nb_udp6)))
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err(1, "rpcb_set udp6 failed");
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freeaddrinfo(ai_udp6);
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}
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if (tcpflag) {
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memset(&hints, 0, sizeof hints);
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hints.ai_flags = AI_PASSIVE;
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp);
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if (ecode != 0)
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err(1, "getaddrinfo tcp: %s", gai_strerror(ecode));
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nconf_tcp = getnetconfigent("tcp");
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if (nconf_tcp == NULL)
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err(1, "getnetconfigent tcp failed");
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nb_tcp.buf = ai_tcp->ai_addr;
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nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen;
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if ((!rpcb_set(RPCPROG_NFS, 2, nconf_tcp, &nb_tcp)) ||
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(!rpcb_set(RPCPROG_NFS, 3, nconf_tcp, &nb_tcp)))
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err(1, "rpcb_set tcp failed");
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freeaddrinfo(ai_tcp);
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}
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if (tcpflag && ip6flag) {
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memset(&hints, 0, sizeof hints);
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hints.ai_flags = AI_PASSIVE;
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hints.ai_family = AF_INET6;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6);
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if (ecode != 0)
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err(1, "getaddrinfo tcp6: %s", gai_strerror(ecode));
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nconf_tcp6 = getnetconfigent("tcp6");
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if (nconf_tcp6 == NULL)
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err(1, "getnetconfigent tcp6 failed");
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nb_tcp6.buf = ai_tcp6->ai_addr;
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nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen;
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if ((!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6)) ||
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(!rpcb_set(RPCPROG_NFS, 3, nconf_tcp6, &nb_tcp6)))
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err(1, "rpcb_set tcp6 failed");
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freeaddrinfo(ai_tcp6);
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}
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exit (0);
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}
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if (debug == 0) {
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daemon(0, 0);
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(void)signal(SIGHUP, SIG_IGN);
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(void)signal(SIGINT, SIG_IGN);
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/*
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* nfsd sits in the kernel most of the time. It needs
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* to ignore SIGTERM/SIGQUIT in order to stay alive as long
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* as possible during a shutdown, otherwise loopback
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* mounts will not be able to unmount.
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*/
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(void)signal(SIGTERM, SIG_IGN);
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(void)signal(SIGQUIT, SIG_IGN);
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}
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(void)signal(SIGSYS, nonfs);
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(void)signal(SIGCHLD, reapchild);
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openlog("nfsd", LOG_PID, LOG_DAEMON);
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/* If we use UDP only, we start the last server below. */
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srvcnt = tcpflag ? nfsdcnt : nfsdcnt - 1;
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for (i = 0; i < srvcnt; i++) {
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switch ((pid = fork())) {
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case -1:
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syslog(LOG_ERR, "fork: %m");
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nfsd_exit(1);
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case 0:
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break;
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default:
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children[i] = pid;
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continue;
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}
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(void)signal(SIGUSR1, child_cleanup);
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setproctitle("server");
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start_server(0);
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}
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(void)signal(SIGUSR1, cleanup);
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FD_ZERO(&v4bits);
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FD_ZERO(&v6bits);
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rpcbregcnt = 0;
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/* Set up the socket for udp and rpcb register it. */
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if (udpflag) {
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rpcbreg = 0;
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for (i = 0; i < bindhostc; i++) {
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memset(&hints, 0, sizeof hints);
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hints.ai_flags = AI_PASSIVE;
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_protocol = IPPROTO_UDP;
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if (setbindhost(&ai_udp, bindhost[i], hints) == 0) {
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rpcbreg = 1;
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rpcbregcnt++;
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if ((sock = socket(ai_udp->ai_family,
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ai_udp->ai_socktype,
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ai_udp->ai_protocol)) < 0) {
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syslog(LOG_ERR,
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"can't create udp socket");
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nfsd_exit(1);
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}
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if (bind(sock, ai_udp->ai_addr,
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ai_udp->ai_addrlen) < 0) {
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syslog(LOG_ERR,
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"can't bind udp addr %s: %m",
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bindhost[i]);
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nfsd_exit(1);
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}
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freeaddrinfo(ai_udp);
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nfsdargs.sock = sock;
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nfsdargs.name = NULL;
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nfsdargs.namelen = 0;
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if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
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syslog(LOG_ERR, "can't Add UDP socket");
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nfsd_exit(1);
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}
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(void)close(sock);
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}
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}
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if (rpcbreg == 1) {
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memset(&hints, 0, sizeof hints);
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hints.ai_flags = AI_PASSIVE;
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_protocol = IPPROTO_UDP;
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ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp);
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if (ecode != 0) {
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syslog(LOG_ERR, "getaddrinfo udp: %s",
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gai_strerror(ecode));
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nfsd_exit(1);
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}
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nconf_udp = getnetconfigent("udp");
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if (nconf_udp == NULL)
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err(1, "getnetconfigent udp failed");
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nb_udp.buf = ai_udp->ai_addr;
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nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen;
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if ((!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp)) ||
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(!rpcb_set(RPCPROG_NFS, 3, nconf_udp, &nb_udp)))
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err(1, "rpcb_set udp failed");
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freeaddrinfo(ai_udp);
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}
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}
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/* Set up the socket for udp6 and rpcb register it. */
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if (udpflag && ip6flag) {
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rpcbreg = 0;
|
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for (i = 0; i < bindhostc; i++) {
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memset(&hints, 0, sizeof hints);
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hints.ai_flags = AI_PASSIVE;
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hints.ai_family = AF_INET6;
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_protocol = IPPROTO_UDP;
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if (setbindhost(&ai_udp6, bindhost[i], hints) == 0) {
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rpcbreg = 1;
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rpcbregcnt++;
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if ((sock = socket(ai_udp6->ai_family,
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ai_udp6->ai_socktype,
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ai_udp6->ai_protocol)) < 0) {
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syslog(LOG_ERR,
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"can't create udp6 socket");
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nfsd_exit(1);
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}
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if (setsockopt(sock, IPPROTO_IPV6,
|
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IPV6_BINDV6ONLY,
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&on, sizeof on) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't set v6-only binding for "
|
|
"udp6 socket: %m");
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nfsd_exit(1);
|
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}
|
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if (bind(sock, ai_udp6->ai_addr,
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ai_udp6->ai_addrlen) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't bind udp6 addr %s: %m",
|
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bindhost[i]);
|
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nfsd_exit(1);
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}
|
|
freeaddrinfo(ai_udp6);
|
|
nfsdargs.sock = sock;
|
|
nfsdargs.name = NULL;
|
|
nfsdargs.namelen = 0;
|
|
if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't add UDP6 socket");
|
|
nfsd_exit(1);
|
|
}
|
|
(void)close(sock);
|
|
}
|
|
}
|
|
if (rpcbreg == 1) {
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = AF_INET6;
|
|
hints.ai_socktype = SOCK_DGRAM;
|
|
hints.ai_protocol = IPPROTO_UDP;
|
|
ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp6);
|
|
if (ecode != 0) {
|
|
syslog(LOG_ERR, "getaddrinfo udp6: %s",
|
|
gai_strerror(ecode));
|
|
nfsd_exit(1);
|
|
}
|
|
nconf_udp6 = getnetconfigent("udp6");
|
|
if (nconf_udp6 == NULL)
|
|
err(1, "getnetconfigent udp6 failed");
|
|
nb_udp6.buf = ai_udp6->ai_addr;
|
|
nb_udp6.len = nb_udp6.maxlen = ai_udp6->ai_addrlen;
|
|
if ((!rpcb_set(RPCPROG_NFS, 2, nconf_udp6, &nb_udp6)) ||
|
|
(!rpcb_set(RPCPROG_NFS, 3, nconf_udp6, &nb_udp6)))
|
|
err(1, "rpcb_set udp6 failed");
|
|
freeaddrinfo(ai_udp6);
|
|
}
|
|
}
|
|
|
|
/* Set up the socket for tcp and rpcb register it. */
|
|
if (tcpflag) {
|
|
rpcbreg = 0;
|
|
for (i = 0; i < bindhostc; i++) {
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = AF_INET;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = IPPROTO_TCP;
|
|
if (setbindhost(&ai_tcp, bindhost[i], hints) == 0) {
|
|
rpcbreg = 1;
|
|
rpcbregcnt++;
|
|
if ((tcpsock = socket(AF_INET, SOCK_STREAM,
|
|
0)) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't create tpc socket");
|
|
nfsd_exit(1);
|
|
}
|
|
if (setsockopt(tcpsock, SOL_SOCKET,
|
|
SO_REUSEADDR,
|
|
(char *)&on, sizeof(on)) < 0)
|
|
syslog(LOG_ERR,
|
|
"setsockopt SO_REUSEADDR: %m");
|
|
if (bind(tcpsock, ai_tcp->ai_addr,
|
|
ai_tcp->ai_addrlen) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't bind tcp addr %s: %m",
|
|
bindhost[i]);
|
|
nfsd_exit(1);
|
|
}
|
|
if (listen(tcpsock, 5) < 0) {
|
|
syslog(LOG_ERR, "listen failed");
|
|
nfsd_exit(1);
|
|
}
|
|
freeaddrinfo(ai_tcp);
|
|
FD_SET(tcpsock, &sockbits);
|
|
FD_SET(tcpsock, &v4bits);
|
|
maxsock = tcpsock;
|
|
connect_type_cnt++;
|
|
}
|
|
}
|
|
if (rpcbreg == 1) {
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = AF_INET;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = IPPROTO_TCP;
|
|
ecode = getaddrinfo(NULL, "nfs", &hints,
|
|
&ai_tcp);
|
|
if (ecode != 0) {
|
|
syslog(LOG_ERR, "getaddrinfo tcp: %s",
|
|
gai_strerror(ecode));
|
|
nfsd_exit(1);
|
|
}
|
|
nconf_tcp = getnetconfigent("tcp");
|
|
if (nconf_tcp == NULL)
|
|
err(1, "getnetconfigent tcp failed");
|
|
nb_tcp.buf = ai_tcp->ai_addr;
|
|
nb_tcp.len = nb_tcp.maxlen = ai_tcp->ai_addrlen;
|
|
if ((!rpcb_set(RPCPROG_NFS, 2, nconf_tcp,
|
|
&nb_tcp)) || (!rpcb_set(RPCPROG_NFS, 3,
|
|
nconf_tcp, &nb_tcp)))
|
|
err(1, "rpcb_set tcp failed");
|
|
freeaddrinfo(ai_tcp);
|
|
}
|
|
}
|
|
|
|
/* Set up the socket for tcp6 and rpcb register it. */
|
|
if (tcpflag && ip6flag) {
|
|
rpcbreg = 0;
|
|
for (i = 0; i < bindhostc; i++) {
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = AF_INET6;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = IPPROTO_TCP;
|
|
if (setbindhost(&ai_tcp6, bindhost[i], hints) == 0) {
|
|
rpcbreg = 1;
|
|
rpcbregcnt++;
|
|
if ((tcp6sock = socket(ai_tcp6->ai_family,
|
|
ai_tcp6->ai_socktype,
|
|
ai_tcp6->ai_protocol)) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't create tcp6 socket");
|
|
nfsd_exit(1);
|
|
}
|
|
if (setsockopt(tcp6sock, SOL_SOCKET,
|
|
SO_REUSEADDR,
|
|
(char *)&on, sizeof(on)) < 0)
|
|
syslog(LOG_ERR,
|
|
"setsockopt SO_REUSEADDR: %m");
|
|
if (setsockopt(tcp6sock, IPPROTO_IPV6,
|
|
IPV6_BINDV6ONLY, &on, sizeof on) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't set v6-only binding for tcp6 "
|
|
"socket: %m");
|
|
nfsd_exit(1);
|
|
}
|
|
if (bind(tcp6sock, ai_tcp6->ai_addr,
|
|
ai_tcp6->ai_addrlen) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't bind tcp6 addr %s: %m",
|
|
bindhost[i]);
|
|
nfsd_exit(1);
|
|
}
|
|
if (listen(tcp6sock, 5) < 0) {
|
|
syslog(LOG_ERR, "listen failed");
|
|
nfsd_exit(1);
|
|
}
|
|
freeaddrinfo(ai_tcp6);
|
|
FD_SET(tcp6sock, &sockbits);
|
|
FD_SET(tcp6sock, &v6bits);
|
|
if (maxsock < tcp6sock)
|
|
maxsock = tcp6sock;
|
|
connect_type_cnt++;
|
|
}
|
|
}
|
|
if (rpcbreg == 1) {
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = AF_INET6;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = IPPROTO_TCP;
|
|
ecode = getaddrinfo(NULL, "nfs", &hints, &ai_tcp6);
|
|
if (ecode != 0) {
|
|
syslog(LOG_ERR, "getaddrinfo tcp6: %s",
|
|
gai_strerror(ecode));
|
|
nfsd_exit(1);
|
|
}
|
|
nconf_tcp6 = getnetconfigent("tcp6");
|
|
if (nconf_tcp6 == NULL)
|
|
err(1, "getnetconfigent tcp6 failed");
|
|
nb_tcp6.buf = ai_tcp6->ai_addr;
|
|
nb_tcp6.len = nb_tcp6.maxlen = ai_tcp6->ai_addrlen;
|
|
if ((!rpcb_set(RPCPROG_NFS, 2, nconf_tcp6, &nb_tcp6)) ||
|
|
(!rpcb_set(RPCPROG_NFS, 3, nconf_tcp6, &nb_tcp6)))
|
|
err(1, "rpcb_set tcp6 failed");
|
|
freeaddrinfo(ai_tcp6);
|
|
}
|
|
}
|
|
|
|
if (rpcbregcnt == 0) {
|
|
syslog(LOG_ERR, "rpcb_set() failed, nothing to do: %m");
|
|
nfsd_exit(1);
|
|
}
|
|
|
|
if (tcpflag && connect_type_cnt == 0) {
|
|
syslog(LOG_ERR, "tcp connects == 0, nothing to do: %m");
|
|
nfsd_exit(1);
|
|
}
|
|
|
|
setproctitle("master");
|
|
/*
|
|
* We always want a master to have a clean way to to shut nfsd down
|
|
* (with unregistration): if the master is killed, it unregisters and
|
|
* kills all children. If we run for UDP only (and so do not have to
|
|
* loop waiting waiting for accept), we instead make the parent
|
|
* a "server" too. start_server will not return.
|
|
*/
|
|
if (!tcpflag)
|
|
start_server(1);
|
|
|
|
/*
|
|
* Loop forever accepting connections and passing the sockets
|
|
* into the kernel for the mounts.
|
|
*/
|
|
for (;;) {
|
|
ready = sockbits;
|
|
if (connect_type_cnt > 1) {
|
|
if (select(maxsock + 1,
|
|
&ready, NULL, NULL, NULL) < 1) {
|
|
syslog(LOG_ERR, "select failed: %m");
|
|
nfsd_exit(1);
|
|
}
|
|
}
|
|
for (tcpsock = 0; tcpsock <= maxsock; tcpsock++) {
|
|
if (FD_ISSET(tcpsock, &ready)) {
|
|
if (FD_ISSET(tcpsock, &v4bits)) {
|
|
len = sizeof(inetpeer);
|
|
if ((msgsock = accept(tcpsock,
|
|
(struct sockaddr *)&inetpeer, &len)) < 0) {
|
|
syslog(LOG_ERR, "accept failed: %m");
|
|
nfsd_exit(1);
|
|
}
|
|
memset(inetpeer.sin_zero, 0,
|
|
sizeof(inetpeer.sin_zero));
|
|
if (setsockopt(msgsock, SOL_SOCKET,
|
|
SO_KEEPALIVE, (char *)&on, sizeof(on)) < 0)
|
|
syslog(LOG_ERR,
|
|
"setsockopt SO_KEEPALIVE: %m");
|
|
nfsdargs.sock = msgsock;
|
|
nfsdargs.name = (caddr_t)&inetpeer;
|
|
nfsdargs.namelen = len;
|
|
nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
|
|
(void)close(msgsock);
|
|
} else if (FD_ISSET(tcpsock, &v6bits)) {
|
|
len = sizeof(inet6peer);
|
|
if ((msgsock = accept(tcpsock,
|
|
(struct sockaddr *)&inet6peer,
|
|
&len)) < 0) {
|
|
syslog(LOG_ERR,
|
|
"accept failed: %m");
|
|
nfsd_exit(1);
|
|
}
|
|
if (setsockopt(msgsock, SOL_SOCKET,
|
|
SO_KEEPALIVE, (char *)&on,
|
|
sizeof(on)) < 0)
|
|
syslog(LOG_ERR, "setsockopt "
|
|
"SO_KEEPALIVE: %m");
|
|
nfsdargs.sock = msgsock;
|
|
nfsdargs.name = (caddr_t)&inet6peer;
|
|
nfsdargs.namelen = len;
|
|
nfssvc(NFSSVC_ADDSOCK, &nfsdargs);
|
|
(void)close(msgsock);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
setbindhost(struct addrinfo **ai, const char *bindhost, struct addrinfo hints)
|
|
{
|
|
int ecode;
|
|
u_int32_t host_addr[4]; /* IPv4 or IPv6 */
|
|
const char *hostptr;
|
|
|
|
if (bindhost == NULL || strcmp("*", bindhost) == 0)
|
|
hostptr = NULL;
|
|
else
|
|
hostptr = bindhost;
|
|
|
|
if (hostptr != NULL) {
|
|
switch (hints.ai_family) {
|
|
case AF_INET:
|
|
if (inet_pton(AF_INET, hostptr, host_addr) == 1) {
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
} else {
|
|
if (inet_pton(AF_INET6, hostptr,
|
|
host_addr) == 1)
|
|
return (1);
|
|
}
|
|
break;
|
|
case AF_INET6:
|
|
if (inet_pton(AF_INET6, hostptr, host_addr) == 1) {
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
} else {
|
|
if (inet_pton(AF_INET, hostptr,
|
|
host_addr) == 1)
|
|
return (1);
|
|
}
|
|
break;
|
|
default:
|
|
}
|
|
}
|
|
|
|
ecode = getaddrinfo(hostptr, "nfs", &hints, ai);
|
|
if (ecode != 0) {
|
|
syslog(LOG_ERR, "getaddrinfo %s: %s", bindhost,
|
|
gai_strerror(ecode));
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "usage: nfsd %s\n", USAGE);
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
nonfs(signo)
|
|
int signo;
|
|
{
|
|
syslog(LOG_ERR, "missing system call: NFS not available");
|
|
}
|
|
|
|
void
|
|
reapchild(signo)
|
|
int signo;
|
|
{
|
|
pid_t pid;
|
|
int i;
|
|
|
|
while ((pid = wait3(NULL, WNOHANG, NULL)) > 0) {
|
|
for (i = 0; i < nfsdcnt; i++)
|
|
if (pid == children[i])
|
|
children[i] = -1;
|
|
}
|
|
}
|
|
|
|
void
|
|
unregistration()
|
|
{
|
|
if ((!rpcb_unset(RPCPROG_NFS, 2, NULL)) ||
|
|
(!rpcb_unset(RPCPROG_NFS, 3, NULL)))
|
|
syslog(LOG_ERR, "rpcb_unset failed");
|
|
}
|
|
|
|
void
|
|
killchildren()
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < nfsdcnt; i++) {
|
|
if (children[i] > 0)
|
|
kill(children[i], SIGKILL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Cleanup master after SIGUSR1.
|
|
*/
|
|
void
|
|
cleanup(signo)
|
|
{
|
|
nfsd_exit(0);
|
|
}
|
|
|
|
/*
|
|
* Cleanup child after SIGUSR1.
|
|
*/
|
|
void
|
|
child_cleanup(signo)
|
|
{
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
nfsd_exit(int status)
|
|
{
|
|
killchildren();
|
|
unregistration();
|
|
exit(status);
|
|
}
|
|
|
|
void
|
|
start_server(int master)
|
|
{
|
|
int status;
|
|
|
|
status = 0;
|
|
nsd.nsd_nfsd = NULL;
|
|
if (nfssvc(NFSSVC_NFSD, &nsd) < 0) {
|
|
syslog(LOG_ERR, "nfssvc: %m");
|
|
status = 1;
|
|
}
|
|
if (master)
|
|
nfsd_exit(status);
|
|
else
|
|
exit(status);
|
|
}
|