971 lines
25 KiB
C
971 lines
25 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 <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 <nfs/nfs.h>
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#ifdef NFSKERB
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#include <kerberosIV/des.h>
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#include <kerberosIV/krb.h>
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#endif
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#include <err.h>
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#include <errno.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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#ifdef OLD_SETPROCTITLE
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char **Argv = NULL; /* pointer to argument vector */
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char *LastArg = NULL; /* end of argv */
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#endif
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#ifdef NFSKERB
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char lnam[ANAME_SZ];
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KTEXT_ST kt;
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AUTH_DAT kauth;
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char inst[INST_SZ];
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struct nfsrpc_fullblock kin, kout;
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struct nfsrpc_fullverf kverf;
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NFSKERBKEY_T kivec;
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struct timeval ktv;
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NFSKERBKEYSCHED_T kerb_keysched;
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#endif
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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 killchildren(void);
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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, struct addrinfo hints);
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#ifdef OLD_SETPROCTITLE
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#ifdef __FreeBSD__
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void setproctitle (char *);
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#endif
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#endif
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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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* -c - support iso cltp clients
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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, cltpflag, connect_type_cnt, i, len, maxsock, msgsock;
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int nfssvc_flag, on = 1, unregister, reregister, sock;
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int tcp6sock, ip6flag, tcpflag, tcpsock;
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int udpflag, ecode, s;
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int bindhostc = 0, bindanyflag, rpcbreg, rpcbregcnt;
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char **bindhost = NULL;
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pid_t pid;
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#ifdef NFSKERB
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struct group *grp;
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struct passwd *pwd;
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struct ucred *cr;
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struct timeval ktv;
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char **cpp;
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#endif
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#ifdef __FreeBSD__
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struct vfsconf vfc;
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int error;
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error = getvfsbyname("nfs", &vfc);
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if (error && vfsisloadable("nfs")) {
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if (vfsload("nfs"))
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err(1, "vfsload(nfs)");
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endvfsent(); /* flush cache */
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error = getvfsbyname("nfs", &vfc);
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}
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if (error)
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errx(1, "NFS is not available in the running kernel");
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#endif
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#ifdef OLD_SETPROCTITLE
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/* Save start and extent of argv for setproctitle. */
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Argv = argv;
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if (envp == 0 || *envp == 0)
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envp = argv;
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while (*envp)
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envp++;
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LastArg = envp[-1] + strlen(envp[-1]);
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#endif
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nfsdcnt = DEFNFSDCNT;
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cltpflag = unregister = reregister = tcpflag = 0;
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bindanyflag = udpflag = ip6flag = 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 < 0 && (errno == EPROTONOSUPPORT ||
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errno == EPFNOSUPPORT || errno == EAFNOSUPPORT) ||
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(getnetconfigent("udp6") == NULL && getnetconfigent("tcp6") == NULL))
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ip6flag = 0;
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else
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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 (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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(void)signal(SIGSYS, nonfs);
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(void)signal(SIGUSR1, cleanup);
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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(SIGCHLD, reapchild);
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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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syslog(LOG_ERR, "getaddrinfo udp: %s",
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gai_strerror(ecode));
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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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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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syslog(LOG_ERR, "getaddrinfo udp6: %s",
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gai_strerror(ecode));
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exit(1);
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}
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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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syslog(LOG_ERR, "getaddrinfo tcp: %s",
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gai_strerror(ecode));
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exit(1);
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}
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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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syslog(LOG_ERR, "getaddrinfo tcp6: %s",
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gai_strerror(ecode));
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exit(1);
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}
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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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openlog("nfsd:", LOG_PID, LOG_DAEMON);
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for (i = 0; i < nfsdcnt; 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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killchildren();
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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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setproctitle("server");
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nfssvc_flag = NFSSVC_NFSD;
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nsd.nsd_nfsd = NULL;
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#ifdef NFSKERB
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if (sizeof (struct nfsrpc_fullverf) != RPCX_FULLVERF ||
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sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK)
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syslog(LOG_ERR, "Yikes NFSKERB structs not packed!");
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nsd.nsd_authstr = (u_char *)&kt;
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nsd.nsd_authlen = sizeof (kt);
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nsd.nsd_verfstr = (u_char *)&kverf;
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nsd.nsd_verflen = sizeof (kverf);
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#endif
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while (nfssvc(nfssvc_flag, &nsd) < 0) {
|
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if (errno != ENEEDAUTH) {
|
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syslog(LOG_ERR, "nfssvc: %m");
|
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exit(1);
|
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}
|
|
nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHINFAIL;
|
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#ifdef NFSKERB
|
|
/*
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* Get the Kerberos ticket out of the authenticator
|
|
* verify it and convert the principal name to a user
|
|
* name. The user name is then converted to a set of
|
|
* user credentials via the password and group file.
|
|
* Finally, decrypt the timestamp and validate it.
|
|
* For more info see the IETF Draft "Authentication
|
|
* in ONC RPC".
|
|
*/
|
|
kt.length = ntohl(kt.length);
|
|
if (gettimeofday(&ktv, (struct timezone *)0) == 0 &&
|
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kt.length > 0 && kt.length <=
|
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(RPCAUTH_MAXSIZ - 3 * NFSX_UNSIGNED)) {
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kin.w1 = NFS_KERBW1(kt);
|
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kt.mbz = 0;
|
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(void)strcpy(inst, "*");
|
|
if (krb_rd_req(&kt, NFS_KERBSRV,
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inst, nsd.nsd_haddr, &kauth, "") == RD_AP_OK &&
|
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krb_kntoln(&kauth, lnam) == KSUCCESS &&
|
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(pwd = getpwnam(lnam)) != NULL) {
|
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cr = &nsd.nsd_cr;
|
|
cr->cr_uid = pwd->pw_uid;
|
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cr->cr_groups[0] = pwd->pw_gid;
|
|
cr->cr_ngroups = 1;
|
|
setgrent();
|
|
while ((grp = getgrent()) != NULL) {
|
|
if (grp->gr_gid == cr->cr_groups[0])
|
|
continue;
|
|
for (cpp = grp->gr_mem;
|
|
*cpp != NULL; ++cpp)
|
|
if (!strcmp(*cpp, lnam))
|
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break;
|
|
if (*cpp == NULL)
|
|
continue;
|
|
cr->cr_groups[cr->cr_ngroups++]
|
|
= grp->gr_gid;
|
|
if (cr->cr_ngroups == NGROUPS)
|
|
break;
|
|
}
|
|
endgrent();
|
|
|
|
/*
|
|
* Get the timestamp verifier out of the
|
|
* authenticator and verifier strings.
|
|
*/
|
|
kin.t1 = kverf.t1;
|
|
kin.t2 = kverf.t2;
|
|
kin.w2 = kverf.w2;
|
|
bzero((caddr_t)kivec, sizeof (kivec));
|
|
bcopy((caddr_t)kauth.session,
|
|
(caddr_t)nsd.nsd_key,sizeof(kauth.session));
|
|
|
|
/*
|
|
* Decrypt the timestamp verifier in CBC mode.
|
|
*/
|
|
XXX
|
|
|
|
/*
|
|
* Validate the timestamp verifier, to
|
|
* check that the session key is ok.
|
|
*/
|
|
nsd.nsd_timestamp.tv_sec = ntohl(kout.t1);
|
|
nsd.nsd_timestamp.tv_usec = ntohl(kout.t2);
|
|
nsd.nsd_ttl = ntohl(kout.w1);
|
|
if ((nsd.nsd_ttl - 1) == ntohl(kout.w2))
|
|
nfssvc_flag = NFSSVC_NFSD | NFSSVC_AUTHIN;
|
|
}
|
|
#endif /* NFSKERB */
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
if (atexit(killchildren) == -1) {
|
|
syslog(LOG_ERR, "atexit: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
FD_ZERO(&v4bits);
|
|
FD_ZERO(&v6bits);
|
|
|
|
rpcbregcnt = 0;
|
|
/* Set up the socket for udp and rpcb register it. */
|
|
if (udpflag) {
|
|
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_DGRAM;
|
|
hints.ai_protocol = IPPROTO_UDP;
|
|
if (setbindhost(&ai_udp, bindhost[i], hints) == 0) {
|
|
rpcbreg = 1;
|
|
rpcbregcnt++;
|
|
if ((sock = socket(ai_udp->ai_family,
|
|
ai_udp->ai_socktype,
|
|
ai_udp->ai_protocol)) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't create udp socket");
|
|
exit(1);
|
|
}
|
|
if (bind(sock, ai_udp->ai_addr,
|
|
ai_udp->ai_addrlen) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't bind udp addr %s: %m",
|
|
bindhost[i]);
|
|
exit(1);
|
|
}
|
|
freeaddrinfo(ai_udp);
|
|
nfsdargs.sock = sock;
|
|
nfsdargs.name = NULL;
|
|
nfsdargs.namelen = 0;
|
|
if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
|
|
syslog(LOG_ERR, "can't Add UDP socket");
|
|
exit(1);
|
|
}
|
|
(void)close(sock);
|
|
}
|
|
}
|
|
if (rpcbreg == 1) {
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = AF_INET;
|
|
hints.ai_socktype = SOCK_DGRAM;
|
|
hints.ai_protocol = IPPROTO_UDP;
|
|
ecode = getaddrinfo(NULL, "nfs", &hints, &ai_udp);
|
|
if (ecode != 0) {
|
|
syslog(LOG_ERR, "getaddrinfo udp: %s",
|
|
gai_strerror(ecode));
|
|
exit(1);
|
|
}
|
|
nconf_udp = getnetconfigent("udp");
|
|
if (nconf_udp == NULL)
|
|
err(1, "getnetconfigent udp failed");
|
|
nb_udp.buf = ai_udp->ai_addr;
|
|
nb_udp.len = nb_udp.maxlen = ai_udp->ai_addrlen;
|
|
if ((!rpcb_set(RPCPROG_NFS, 2, nconf_udp, &nb_udp)) ||
|
|
(!rpcb_set(RPCPROG_NFS, 3, nconf_udp, &nb_udp)))
|
|
err(1, "rpcb_set udp failed");
|
|
freeaddrinfo(ai_udp);
|
|
}
|
|
}
|
|
|
|
/* Set up the socket for udp6 and rpcb register it. */
|
|
if (udpflag && 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_DGRAM;
|
|
hints.ai_protocol = IPPROTO_UDP;
|
|
if (setbindhost(&ai_udp6, bindhost[i], hints) == 0) {
|
|
rpcbreg = 1;
|
|
rpcbregcnt++;
|
|
if ((sock = socket(ai_udp6->ai_family,
|
|
ai_udp6->ai_socktype,
|
|
ai_udp6->ai_protocol)) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't create udp6 socket");
|
|
exit(1);
|
|
}
|
|
if (setsockopt(sock, IPPROTO_IPV6,
|
|
IPV6_BINDV6ONLY,
|
|
&on, sizeof on) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't set v6-only binding for "
|
|
"udp6 socket: %m");
|
|
exit(1);
|
|
}
|
|
if (bind(sock, ai_udp6->ai_addr,
|
|
ai_udp6->ai_addrlen) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't bind udp6 addr %s: %m",
|
|
bindhost[i]);
|
|
exit(1);
|
|
}
|
|
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");
|
|
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));
|
|
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");
|
|
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]);
|
|
exit(1);
|
|
}
|
|
if (listen(tcpsock, 5) < 0) {
|
|
syslog(LOG_ERR, "listen failed");
|
|
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));
|
|
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");
|
|
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");
|
|
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]);
|
|
exit(1);
|
|
}
|
|
if (listen(tcp6sock, 5) < 0) {
|
|
syslog(LOG_ERR, "listen failed");
|
|
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));
|
|
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");
|
|
exit(1);
|
|
}
|
|
|
|
if ((tcpflag) && (connect_type_cnt == 0)) {
|
|
syslog(LOG_ERR, "tcp connects == 0, nothing to do: %m");
|
|
exit(1);
|
|
}
|
|
|
|
setproctitle("master");
|
|
|
|
/*
|
|
* 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");
|
|
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");
|
|
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 = sizeof(inetpeer);
|
|
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");
|
|
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 = sizeof(inet6peer);
|
|
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;
|
|
{
|
|
|
|
while (wait3(NULL, WNOHANG, NULL) > 0);
|
|
}
|
|
|
|
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;
|
|
sigset_t sigs;
|
|
|
|
sigemptyset(&sigs);
|
|
/*
|
|
* Block SIGCHLD to avoid killing a reaped process (although it is
|
|
* unlikely, the pid might have been reused).
|
|
*/
|
|
sigaddset(&sigs, SIGCHLD);
|
|
if (sigprocmask(SIG_BLOCK, &sigs, NULL) == -1) {
|
|
syslog(LOG_ERR, "sigprocmask: %s",
|
|
strerror(errno));
|
|
return;
|
|
}
|
|
for (i = 0; i < nfsdcnt; i++) {
|
|
if (children[i] > 0)
|
|
kill(children[i], SIGKILL);
|
|
}
|
|
if (sigprocmask(SIG_UNBLOCK, &sigs, NULL) == -1) {
|
|
syslog(LOG_ERR, "sigprocmask: %s", strerror(errno));
|
|
}
|
|
unregistration();
|
|
}
|
|
|
|
void
|
|
cleanup(signo)
|
|
{
|
|
killchildren();
|
|
exit (0);
|
|
}
|
|
|
|
#ifdef OLD_SETPROCTITLE
|
|
#ifdef __FreeBSD__
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void
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setproctitle(a)
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char *a;
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{
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register char *cp;
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char buf[80];
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cp = Argv[0];
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(void)snprintf(buf, sizeof(buf), "nfsd-%s", a);
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(void)strncpy(cp, buf, LastArg - cp);
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cp += strlen(cp);
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while (cp < LastArg)
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*cp++ = '\0';
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Argv[1] = NULL;
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}
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#endif /* __FreeBSD__ */
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#endif
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