+/*
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rick Macklem at The University of Guelph.
+ *
+ * %sccs.include.redist.c%
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1992 The Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)mount_nfs.c 5.1 (Berkeley) %G%";
+#endif /* not lint */
+
+#include <stdio.h>
+#include <signal.h>
+#include <strings.h>
+#include <sys/syslog.h>
+#include <sys/param.h>
+#include <sys/file.h>
+#include <sys/errno.h>
+#include <sys/ucred.h>
+#include <sys/mount.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <netdb.h>
+#include <rpc/rpc.h>
+#include <rpc/pmap_clnt.h>
+#include <rpc/pmap_prot.h>
+#ifdef ISO
+#include <netiso/iso.h>
+#endif
+#ifdef KERBEROS
+#include <kerberosIV/krb.h>
+#endif
+#include <nfs/rpcv2.h>
+#include <nfs/nfsv2.h>
+#include <nfs/nfs.h>
+#include <nfs/nqnfs.h>
+
+int xdr_dir(), xdr_fh();
+struct nfs_args nfsdefargs = {
+ (struct sockaddr *)0,
+ sizeof (struct sockaddr_in),
+ SOCK_DGRAM,
+ 0,
+ (nfsv2fh_t *)0,
+ 0,
+ NFS_WSIZE,
+ NFS_RSIZE,
+ NFS_TIMEO,
+ NFS_RETRANS,
+ NFS_MAXGRPS,
+ NFS_DEFRAHEAD,
+ NQ_DEFLEASE,
+ NQ_DEADTHRESH,
+ (char *)0,
+};
+
+struct nfhret {
+ u_long stat;
+ nfsv2fh_t nfh;
+};
+#define DEF_RETRY 10000
+#define BGRND 1
+#define ISBGRND 2
+int retrycnt = DEF_RETRY;
+int opflags = 0;
+extern int errno;
+
+#ifdef ISO
+struct iso_addr *iso_addr();
+#endif
+
+#ifdef KERBEROS
+char inst[INST_SZ];
+char realm[REALM_SZ];
+KTEXT_ST kt;
+#endif
+
+main(argc, argv, arge)
+ int argc;
+ char **argv;
+ char **arge;
+{
+ struct nfs_args nfsargs;
+ register int c;
+ register struct nfs_args *nfsargsp = &nfsargs;
+ struct nfsd_cargs ncd;
+ int num, flags = 0, match = 1, i, nfssvc_flag;
+ char *spec, *name;
+ uid_t last_ruid = -1;
+ extern int optind;
+ extern char *optarg;
+
+#ifdef KERBEROS
+ strcpy(realm, KRB_REALM);
+#endif
+ nfsargs = nfsdefargs;
+ retrycnt = DEF_RETRY;
+ if (argc <= 1)
+ Usage(argc, argv);
+ while ((c = getopt(argc, argv, "bsiTpMlqdckF:R:r:w:t:x:g:a:L:D:Km:"))
+ != EOF)
+ switch (c) {
+ case 'b':
+ opflags |= BGRND;
+ break;
+ case 's':
+ nfsargsp->flags |= NFSMNT_SOFT;
+ break;
+ case 'i':
+ nfsargsp->flags |= NFSMNT_INT;
+ break;
+ case 'T':
+ nfsargsp->sotype = SOCK_STREAM;
+ break;
+#ifdef ISO
+ case 'p':
+ nfsargsp->sotype = SOCK_SEQPACKET;
+ break;
+#endif
+ case 'M':
+ nfsargsp->flags |= NFSMNT_MYWRITE;
+ break;
+ case 'l':
+ nfsargsp->flags |= NFSMNT_RDIRALOOK;
+ break;
+ case 'q':
+ nfsargsp->flags |= NFSMNT_NQNFS;
+ break;
+ case 'd':
+ nfsargsp->flags |= NFSMNT_DUMBTIMR;
+ break;
+ case 'c':
+ nfsargsp->flags |= NFSMNT_NOCONN;
+ break;
+ case 'k':
+ nfsargsp->flags |= NFSMNT_NQLOOKLEASE;
+ break;
+ case 'F':
+ if ((num = atoi(optarg)) != 0)
+ flags = num;
+ break;
+ case 'R':
+ if ((num = atoi(optarg)) > 0)
+ retrycnt = num;
+ break;
+ case 'r':
+ if ((num = atoi(optarg)) > 0) {
+ nfsargsp->rsize = num;
+ nfsargsp->flags |= NFSMNT_RSIZE;
+ }
+ break;
+ case 'w':
+ if ((num = atoi(optarg)) > 0) {
+ nfsargsp->wsize = num;
+ nfsargsp->flags |= NFSMNT_WSIZE;
+ }
+ break;
+ case 't':
+ if ((num = atoi(optarg)) > 0) {
+ nfsargsp->timeo = num;
+ nfsargsp->flags |= NFSMNT_TIMEO;
+ }
+ break;
+ case 'x':
+ if ((num = atoi(optarg)) > 0) {
+ nfsargsp->retrans = num;
+ nfsargsp->flags |= NFSMNT_RETRANS;
+ }
+ break;
+ case 'g':
+ if ((num = atoi(optarg)) > 0) {
+ nfsargsp->maxgrouplist = num;
+ nfsargsp->flags |= NFSMNT_MAXGRPS;
+ }
+ break;
+ case 'a':
+ if ((num = atoi(optarg)) >= 0) {
+ nfsargsp->readahead = num;
+ nfsargsp->flags |= NFSMNT_READAHEAD;
+ }
+ break;
+ case 'L':
+ if ((num = atoi(optarg)) >= 2) {
+ nfsargsp->leaseterm = num;
+ nfsargsp->flags |= NFSMNT_LEASETERM;
+ }
+ break;
+ case 'D':
+ if ((num = atoi(optarg)) > 0) {
+ nfsargsp->deadthresh = num;
+ nfsargsp->flags |= NFSMNT_DEADTHRESH;
+ }
+ break;
+#ifdef KERBEROS
+ case 'K':
+ nfsargsp->flags |= NFSMNT_KERB;
+ break;
+ case 'm':
+ strncpy(realm, optarg, REALM_SZ - 1);
+ realm[REALM_SZ - 1] = '\0';
+ break;
+#endif /* KERBEROS */
+ default:
+ Usage(argc, argv);
+ };
+ if ((argc - optind) == 2) {
+ spec = argv[optind];
+ name = argv[optind + 1];
+ } else
+ Usage(argc, argv);
+ if (getnfsargs(spec, nfsargsp)) {
+ if (mount(MOUNT_NFS, name, flags, nfsargsp))
+ exit(1);
+ if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) {
+ if ((opflags & ISBGRND) == 0) {
+ if (i = fork()) {
+ if (i == -1) {
+ perror("nqnfs");
+ exit(1);
+ }
+ exit();
+ }
+ (void) setsid();
+ (void) close(0);
+ (void) close(1);
+ (void) close(2);
+ (void) chdir("/");
+ }
+ openlog("mount_nfs:", LOG_PID, LOG_DAEMON);
+ nfssvc_flag = NFSSVC_MNTD;
+ ncd.ncd_dirp = name;
+ while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) {
+ if (errno == ENEEDAUTH) {
+syslog(LOG_ERR, "in eacces");
+ nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH |
+ NFSSVC_AUTHINFAIL;
+#ifdef KERBEROS
+syslog(LOG_ERR,"Callin krb uid=%d inst=%s realm=%s",ncd.ncd_authuid,inst,realm);
+ /*
+ * Set up as ncd_authuid for the kerberos call.
+ * Must set ruid to ncd_authuid and reset the
+ * ticket name iff ncd_authuid is not the same
+ * as last time, so that the right ticket file
+ * is found.
+ */
+ if (ncd.ncd_authuid != last_ruid) {
+ krb_set_tkt_string("");
+ last_ruid = ncd.ncd_authuid;
+ }
+ setreuid(ncd.ncd_authuid, 0);
+ if (krb_mk_req(&kt, "rcmd", inst, realm, 0) ==
+ KSUCCESS &&
+ kt.length <= (RPCAUTH_MAXSIZ - 2*NFSX_UNSIGNED)) {
+syslog(LOG_ERR,"Got it\n");
+ ncd.ncd_authtype = RPCAUTH_NQNFS;
+ ncd.ncd_authlen = kt.length;
+ ncd.ncd_authstr = (char *)kt.dat;
+ nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH;
+ }
+ setreuid(0, 0);
+syslog(LOG_ERR,"ktlen=%d\n", kt.length);
+#endif /* KERBEROS */
+ } else
+ syslog(LOG_ERR, "nfssvc err %m");
+ }
+ }
+ exit();
+ } else
+ exit(1);
+}
+
+getnfsargs(spec, nfsargsp)
+ char *spec;
+ struct nfs_args *nfsargsp;
+{
+ register CLIENT *clp;
+ struct hostent *hp;
+ static struct sockaddr_in saddr;
+#ifdef ISO
+ static struct sockaddr_iso isoaddr;
+ struct iso_addr *isop;
+#endif
+ struct timeval pertry, try;
+ enum clnt_stat clnt_stat;
+ int so = RPC_ANYSOCK, isoflag = 0, i;
+ char *hostp, *delimp, *cp;
+ u_short tport;
+ static struct nfhret nfhret;
+ static char nam[MNAMELEN + 1];
+
+ strncpy(nam, spec, MNAMELEN);
+ nam[MNAMELEN] = '\0';
+ if ((delimp = index(spec, '@')) != NULL) {
+ hostp = delimp + 1;
+ } else if ((delimp = index(spec, ':')) != NULL) {
+ hostp = spec;
+ spec = delimp + 1;
+ } else {
+ fprintf(stderr,
+ "No <host>:<dirpath> or <dirpath>@<host> spec\n");
+ return (0);
+ }
+ *delimp = '\0';
+ /*
+ * DUMB!! Until the mount protocol works on iso transport, we must
+ * supply both an iso and an inet address for the host.
+ */
+#ifdef ISO
+ if (!strncmp(hostp, "iso=", 4)) {
+ u_short isoport;
+
+ hostp += 4;
+ isoflag++;
+ if ((delimp = index(hostp, '+')) == NULL) {
+ fprintf(stderr, "No iso+inet address\n");
+ return (0);
+ }
+ *delimp = '\0';
+ if ((isop = iso_addr(hostp)) == NULL) {
+ fprintf(stderr, "Bad iso address\n");
+ return (0);
+ }
+ bzero((caddr_t)&isoaddr, sizeof (isoaddr));
+ bcopy((caddr_t)isop, (caddr_t)&isoaddr.siso_addr,
+ sizeof (struct iso_addr));
+ isoaddr.siso_len = sizeof (isoaddr);
+ isoaddr.siso_family = AF_ISO;
+ isoaddr.siso_tlen = 2;
+ isoport = htons(NFS_PORT);
+ bcopy((caddr_t)&isoport, TSEL(&isoaddr), isoaddr.siso_tlen);
+ hostp = delimp + 1;
+ }
+#endif /* ISO */
+
+ /*
+ * Handle an internet host address and reverse resolve it if
+ * doing Kerberos.
+ */
+ if (isdigit(*hostp)) {
+ if ((saddr.sin_addr.s_addr = inet_addr(hostp)) == -1) {
+ fprintf(stderr, "Bad net addr %s\n", hostp);
+ return (0);
+ }
+ if ((nfsargsp->flags & NFSMNT_KERB) &&
+ (hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr,
+ sizeof (u_long), AF_INET)) == (struct hostent *)0) {
+ fprintf(stderr, "Can't reverse resolve net addr\n");
+ return (0);
+ }
+ } else if ((hp = gethostbyname(hostp)) == NULL) {
+ fprintf(stderr, "Can't get net id for host\n");
+ return (0);
+ }
+#ifdef KERBEROS
+ if (nfsargsp->flags & NFSMNT_KERB) {
+ strncpy(inst, hp->h_name, INST_SZ);
+ inst[INST_SZ - 1] = '\0';
+ if (cp = index(inst, '.'))
+ *cp = '\0';
+ }
+#endif /* KERBEROS */
+
+ bcopy(hp->h_addr, (caddr_t)&saddr.sin_addr, hp->h_length);
+ nfhret.stat = EACCES; /* Mark not yet successful */
+ while (retrycnt > 0) {
+ saddr.sin_family = AF_INET;
+ saddr.sin_port = htons(PMAPPORT);
+ if ((tport = pmap_getport(&saddr, RPCPROG_NFS,
+ NFS_VER2, IPPROTO_UDP)) == 0) {
+ if ((opflags & ISBGRND) == 0)
+ clnt_pcreateerror("NFS Portmap");
+ } else {
+ saddr.sin_port = 0;
+ pertry.tv_sec = 10;
+ pertry.tv_usec = 0;
+ if ((clp = clntudp_create(&saddr, RPCPROG_MNT,
+ RPCMNT_VER1, pertry, &so)) == NULL) {
+ if ((opflags & ISBGRND) == 0)
+ clnt_pcreateerror("Cannot MNT PRC");
+ } else {
+ clp->cl_auth = authunix_create_default();
+ try.tv_sec = 10;
+ try.tv_usec = 0;
+ clnt_stat = clnt_call(clp, RPCMNT_MOUNT,
+ xdr_dir, spec, xdr_fh, &nfhret, try);
+ if (clnt_stat != RPC_SUCCESS) {
+ if ((opflags & ISBGRND) == 0)
+ clnt_perror(clp, "Bad MNT RPC");
+ } else {
+ auth_destroy(clp->cl_auth);
+ clnt_destroy(clp);
+ retrycnt = 0;
+ }
+ }
+ }
+ if (--retrycnt > 0) {
+ if (opflags & BGRND) {
+ opflags &= ~BGRND;
+ if (i = fork()) {
+ if (i == -1) {
+ perror("nqnfs");
+ exit(1);
+ }
+ exit();
+ }
+ (void) setsid();
+ (void) close(0);
+ (void) close(1);
+ (void) close(2);
+ (void) chdir("/");
+ opflags |= ISBGRND;
+ }
+ sleep(60);
+ }
+ }
+ if (nfhret.stat) {
+ if (opflags & ISBGRND)
+ exit(1);
+ fprintf(stderr, "Can't access %s: ", spec);
+ errno = nfhret.stat;
+ perror(NULL);
+ return (0);
+ }
+ saddr.sin_port = htons(tport);
+#ifdef ISO
+ if (isoflag) {
+ nfsargsp->addr = (struct sockaddr *) &isoaddr;
+ nfsargsp->addrlen = sizeof (isoaddr);
+ } else
+#endif /* ISO */
+ {
+ nfsargsp->addr = (struct sockaddr *) &saddr;
+ nfsargsp->addrlen = sizeof (saddr);
+ }
+ nfsargsp->fh = &nfhret.nfh;
+ nfsargsp->hostname = nam;
+ return (1);
+}
+
+/*
+ * xdr routines for mount rpc's
+ */
+xdr_dir(xdrsp, dirp)
+ XDR *xdrsp;
+ char *dirp;
+{
+ return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
+}
+
+xdr_fh(xdrsp, np)
+ XDR *xdrsp;
+ struct nfhret *np;
+{
+ if (!xdr_u_long(xdrsp, &(np->stat)))
+ return (0);
+ if (np->stat)
+ return (1);
+ return (xdr_opaque(xdrsp, (caddr_t)&(np->nfh), NFSX_FH));
+}
+
+Usage(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register int i;
+
+ for (i = 0; i < argc; i++)
+ fprintf(stderr, "%s ", argv[i]);
+ fprintf(stderr, "\nBad mount_nfs arg\n");
+ exit(1);
+}
projects / unix-history / commitdiff