/* $OpenBSD: mount_nfs.c,v 1.45 2006/07/28 20:02:49 sturm Exp $ */ /* $NetBSD: mount_nfs.c,v 1.12.4.1 1996/05/25 22:48:05 fvdl Exp $ */ /* * Copyright (c) 1992, 1993, 1994 * 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. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char copyright[] = "@(#) Copyright (c) 1992, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95"; #else static char rcsid[] = "$NetBSD: mount_nfs.c,v 1.12.4.1 1996/05/25 22:48:05 fvdl Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #define _KERNEL #include #undef _KERNEL #include #include #include #include #include #include #include #include #include #include #include #include "mntopts.h" #define ALTF_BG 0x1 #define ALTF_NOCONN 0x2 #define ALTF_DUMBTIMR 0x4 #define ALTF_INTR 0x8 #define ALTF_NFSV3 0x20 #define ALTF_RDIRPLUS 0x40 #define ALTF_MNTUDP 0x80 #define ALTF_RESVPORT 0x100 #define ALTF_SEQPACKET 0x200 #define ALTF_SOFT 0x800 #define ALTF_TCP 0x1000 #define ALTF_PORT 0x2000 #define ALTF_NFSV2 0x4000 #define ALTF_NOAC 0x8000 #define ALTF_ACREGMIN 0x10000 #define ALTF_ACREGMAX 0x20000 #define ALTF_ACDIRMIN 0x40000 #define ALTF_ACDIRMAX 0x80000 const struct mntopt mopts[] = { MOPT_STDOPTS, MOPT_FORCE, MOPT_UPDATE, MOPT_SYNC, { "bg", ALTF_BG, 0 }, { "conn", ALTF_NOCONN, MFLAG_INVERSE }, { "dumbtimer", ALTF_DUMBTIMR, 0 }, { "intr", ALTF_INTR, 0 }, { "nfsv3", ALTF_NFSV3, 0 }, { "rdirplus", ALTF_RDIRPLUS, 0 }, { "mntudp", ALTF_MNTUDP, 0 }, { "resvport", ALTF_RESVPORT, 0 }, { "soft", ALTF_SOFT, 0 }, { "tcp", ALTF_TCP, 0 }, { "port", ALTF_PORT, MFLAG_INTVAL }, { "nfsv2", ALTF_NFSV2, 0 }, { "ac", ALTF_NOAC, MFLAG_INVERSE }, { "acregmin", ALTF_ACREGMIN, MFLAG_INTVAL }, { "acregmax", ALTF_ACREGMAX, MFLAG_INTVAL }, { "acdirmin", ALTF_ACDIRMIN, MFLAG_INTVAL }, { "acdirmax", ALTF_ACDIRMAX, MFLAG_INTVAL }, { NULL } }; struct nfs_args nfsdefargs = { NFS_ARGSVERSION, NULL, sizeof (struct sockaddr_in), SOCK_DGRAM, 0, NULL, 0, NFSMNT_NFSV3, NFS_WSIZE, NFS_RSIZE, NFS_READDIRSIZE, 10, NFS_RETRANS, NFS_MAXGRPS, NFS_DEFRAHEAD, 0, 0, NULL, 0, 0, 0, 0 }; struct nfhret { u_long stat; long vers; long auth; long fhsize; u_char nfh[NFSX_V3FHMAX]; }; #define DEF_RETRY 10000 #define BGRND 1 #define ISBGRND 2 int retrycnt; int opflags = 0; int nfsproto = IPPROTO_UDP; int mnttcp_ok = 1; u_short port_no = 0; int force2 = 0; int force3 = 0; int getnfsargs(char *, struct nfs_args *); void set_rpc_maxgrouplist(int); __dead void usage(void); int xdr_dir(XDR *, char *); int xdr_fh(XDR *, struct nfhret *); int main(int argc, char *argv[]) { int c; struct nfs_args *nfsargsp; struct nfs_args nfsargs; int mntflags, num; char name[MAXPATHLEN], *options = NULL, *p, *spec; union mntval value; retrycnt = DEF_RETRY; mntflags = 0; nfsargs = nfsdefargs; nfsargsp = &nfsargs; while ((c = getopt(argc, argv, "23a:bcdD:g:I:iL:lo:PR:r:sTt:w:x:U")) != -1) switch (c) { case '3': if (force2) errx(1, "-2 and -3 are mutually exclusive"); force3 = 1; break; case '2': if (force3) errx(1, "-2 and -3 are mutually exclusive"); force2 = 1; nfsargsp->flags &= ~NFSMNT_NFSV3; break; case 'a': num = strtol(optarg, &p, 10); if (*p || num < 0) errx(1, "illegal -a value -- %s", optarg); nfsargsp->readahead = num; nfsargsp->flags |= NFSMNT_READAHEAD; break; case 'b': opflags |= BGRND; break; case 'c': nfsargsp->flags |= NFSMNT_NOCONN; break; case 'D': /* backward compatibility */ break; case 'd': nfsargsp->flags |= NFSMNT_DUMBTIMR; break; #if 0 /* XXXX */ case 'g': num = strtol(optarg, &p, 10); if (*p || num <= 0) errx(1, "illegal -g value -- %s", optarg); set_rpc_maxgrouplist(num); nfsargsp->maxgrouplist = num; nfsargsp->flags |= NFSMNT_MAXGRPS; break; #endif case 'I': num = strtol(optarg, &p, 10); if (*p || num <= 0) errx(1, "illegal -I value -- %s", optarg); nfsargsp->readdirsize = num; nfsargsp->flags |= NFSMNT_READDIRSIZE; break; case 'i': nfsargsp->flags |= NFSMNT_INT; break; case 'L': /* backward compatibility */ break; case 'l': nfsargsp->flags |= NFSMNT_RDIRPLUS; break; case 'o': options = optarg; while (options != NULL) { switch (getmntopt(&options, &value, mopts, &mntflags)) { case ALTF_BG: opflags |= BGRND; break; case ALTF_NOCONN: nfsargsp->flags |= NFSMNT_NOCONN; break; case ALTF_DUMBTIMR: nfsargsp->flags |= NFSMNT_DUMBTIMR; break; case ALTF_INTR: nfsargsp->flags |= NFSMNT_INT; break; case ALTF_NFSV3: if (force2) errx(1, "conflicting version options"); force3 = 1; break; case ALTF_NFSV2: if (force3) errx(1, "conflicting version options"); force2 = 1; nfsargsp->flags &= ~NFSMNT_NFSV3; break; case ALTF_RDIRPLUS: nfsargsp->flags |= NFSMNT_RDIRPLUS; break; case ALTF_MNTUDP: mnttcp_ok = 0; break; case ALTF_RESVPORT: nfsargsp->flags |= NFSMNT_RESVPORT; break; case ALTF_SOFT: nfsargsp->flags |= NFSMNT_SOFT; break; case ALTF_TCP: nfsargsp->sotype = SOCK_STREAM; nfsproto = IPPROTO_TCP; break; case ALTF_PORT: port_no = value.ival; break; case ALTF_NOAC: nfsargsp->flags |= (NFSMNT_ACREGMIN | NFSMNT_ACREGMAX | NFSMNT_ACDIRMIN | NFSMNT_ACDIRMAX); nfsargsp->acregmin = 0; nfsargsp->acregmax = 0; nfsargsp->acdirmin = 0; nfsargsp->acdirmax = 0; break; case ALTF_ACREGMIN: nfsargsp->flags |= NFSMNT_ACREGMIN; nfsargsp->acregmin = value.ival; break; case ALTF_ACREGMAX: nfsargsp->flags |= NFSMNT_ACREGMAX; nfsargsp->acregmax = value.ival; break; case ALTF_ACDIRMIN: nfsargsp->flags |= NFSMNT_ACDIRMIN; nfsargsp->acdirmin = value.ival; break; case ALTF_ACDIRMAX: nfsargsp->flags |= NFSMNT_ACDIRMAX; nfsargsp->acdirmax = value.ival; break; } } break; case 'P': /* backward compatibility */ break; case 'R': num = strtol(optarg, &p, 10); if (*p || num <= 0) errx(1, "illegal -R value -- %s", optarg); retrycnt = num; break; case 'r': num = strtol(optarg, &p, 10); if (*p || num <= 0) errx(1, "illegal -r value -- %s", optarg); nfsargsp->rsize = num; nfsargsp->flags |= NFSMNT_RSIZE; break; case 's': nfsargsp->flags |= NFSMNT_SOFT; break; case 'T': nfsargsp->sotype = SOCK_STREAM; nfsproto = IPPROTO_TCP; break; case 't': num = strtol(optarg, &p, 10); if (*p || num <= 0) errx(1, "illegal -t value -- %s", optarg); nfsargsp->timeo = num; nfsargsp->flags |= NFSMNT_TIMEO; break; case 'w': num = strtol(optarg, &p, 10); if (*p || num <= 0) errx(1, "illegal -w value -- %s", optarg); nfsargsp->wsize = num; nfsargsp->flags |= NFSMNT_WSIZE; break; case 'x': num = strtol(optarg, &p, 10); if (*p || num <= 0) errx(1, "illegal -x value -- %s", optarg); nfsargsp->retrans = num; nfsargsp->flags |= NFSMNT_RETRANS; break; case 'U': mnttcp_ok = 0; break; default: usage(); /* NOTREACHED */ } argc -= optind; argv += optind; if (argc != 2) usage(); spec = *argv++; if (realpath(*argv, name) == NULL) err(1, "realpath %s", *argv); if (!getnfsargs(spec, nfsargsp)) exit(1); if (mount(MOUNT_NFS, name, mntflags, nfsargsp)) { if (errno == EOPNOTSUPP) errx(1, "%s: Filesystem not supported by kernel", name); else err(1, "%s", name); } exit(0); } int getnfsargs(char *spec, struct nfs_args *nfsargsp) { CLIENT *clp; struct hostent *hp; static struct sockaddr_in saddr; struct timeval pertry, try; enum clnt_stat clnt_stat; int so = RPC_ANYSOCK, i, nfsvers, mntvers, orgcnt; char *hostp, *delimp; u_short tport; static struct nfhret nfhret; static char nam[MNAMELEN + 1]; if (strlcpy(nam, spec, sizeof(nam)) >= sizeof(nam)) { errx(1, "hostname too long"); } if ((delimp = strchr(spec, '@')) != NULL) { hostp = delimp + 1; } else if ((delimp = strchr(spec, ':')) != NULL) { hostp = spec; spec = delimp + 1; } else { warnx("no : or @ spec"); return (0); } *delimp = '\0'; /* * Handle an internet host address */ if (inet_aton(hostp, &saddr.sin_addr) == 0) { hp = gethostbyname(hostp); if (hp == NULL) { warnx("can't resolve address for host %s", hostp); return (0); } memcpy(&saddr.sin_addr, hp->h_addr, hp->h_length); } if (force2) { nfsvers = NFS_VER2; mntvers = RPCMNT_VER1; } else { nfsvers = NFS_VER3; mntvers = RPCMNT_VER3; } orgcnt = retrycnt; tryagain: nfhret.stat = EACCES; /* Mark not yet successful */ while (retrycnt > 0) { saddr.sin_family = AF_INET; saddr.sin_port = htons(PMAPPORT); if ((tport = port_no ? port_no : pmap_getport(&saddr, RPCPROG_NFS, nfsvers, nfsargsp->sotype == SOCK_STREAM ? IPPROTO_TCP : 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 (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, &so, 0, 0); else clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, pertry, &so); if (clp == 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; nfhret.auth = RPCAUTH_UNIX; nfhret.vers = mntvers; clnt_stat = clnt_call(clp, RPCMNT_MOUNT, xdr_dir, spec, xdr_fh, &nfhret, try); if (clnt_stat != RPC_SUCCESS) { if (clnt_stat == RPC_PROGVERSMISMATCH) { if (nfsvers == NFS_VER3 && !force3) { retrycnt = orgcnt; nfsvers = NFS_VER2; mntvers = RPCMNT_VER1; nfsargsp->flags &= ~NFSMNT_NFSV3; goto tryagain; } else { warnx("%s", clnt_sperror(clp, "MNT RPC")); } } if ((opflags & ISBGRND) == 0) warnx("%s", clnt_sperror(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) err(1, "fork"); exit(0); } (void) setsid(); (void) close(STDIN_FILENO); (void) close(STDOUT_FILENO); (void) close(STDERR_FILENO); (void) chdir("/"); opflags |= ISBGRND; } sleep(60); } } if (nfhret.stat) { if (opflags & ISBGRND) exit(1); errno = nfhret.stat; warnx("can't access %s: %s", spec, strerror(nfhret.stat)); return (0); } saddr.sin_port = htons(tport); nfsargsp->addr = (struct sockaddr *) &saddr; nfsargsp->addrlen = sizeof (saddr); nfsargsp->fh = nfhret.nfh; nfsargsp->fhsize = nfhret.fhsize; nfsargsp->hostname = nam; return (1); } /* * xdr routines for mount rpc's */ int xdr_dir(XDR *xdrsp, char *dirp) { return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); } int xdr_fh(XDR *xdrsp, struct nfhret *np) { int i; long auth, authcnt, authfnd = 0; if (!xdr_u_long(xdrsp, &np->stat)) return (0); if (np->stat) return (1); switch (np->vers) { case 1: np->fhsize = NFSX_V2FH; return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); case 3: if (!xdr_long(xdrsp, &np->fhsize)) return (0); if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) return (0); if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) return (0); if (!xdr_long(xdrsp, &authcnt)) return (0); for (i = 0; i < authcnt; i++) { if (!xdr_long(xdrsp, &auth)) return (0); if (auth == np->auth) authfnd++; } /* * Some servers, such as DEC's OSF/1 return a nil authenticator * list to indicate RPCAUTH_UNIX. */ if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) np->stat = EAUTH; return (1); }; return (0); } __dead void usage(void) { extern char *__progname; (void)fprintf(stderr, "usage: %s [-23bcdilsTU] [-a maxreadahead] [-g maxgroups]\n" "\t[-I readdirsize] [-o options] [-R retrycnt] [-r readsize]\n" "\t[-t timeout] [-w writesize] [-x retrans] rhost:path node\n", __progname); exit(1); }