/* * nfsmount.c -- Linux NFS mount * Copyright (C) 1993 Rick Sladkey * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * Wed Feb 8 12:51:48 1995, biro@yggdrasil.com (Ross Biro): allow all port * numbers to be specified on the command line. * * Fri, 8 Mar 1996 18:01:39, Swen Thuemmler : * Omit the call to connect() for Linux version 1.3.11 or later. * * Wed Oct 1 23:55:28 1997: Dick Streefland * Implemented the "bg", "fg" and "retry" mount options for NFS. * * 1999-02-22 Arkadiusz Miskiewicz * - added Native Language Support * * Modified by Olaf Kirch and Trond Myklebust for new NFS code, * plus NFSv3 stuff. * * 2006-06-06 Amit Gud * - Moved with modifcations to nfs-utils/utils/mount from util-linux/mount. */ /* * nfsmount.c,v 1.1.1.1 1993/11/18 08:40:51 jrs Exp */ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "xcommon.h" #include "mount.h" #include "nfs_mount.h" #include "mount_constants.h" #include "nls.h" #include "error.h" #include "network.h" #include "version.h" #ifdef HAVE_RPCSVC_NFS_PROT_H #include #else #include #define nfsstat nfs_stat #endif #ifndef NFS_PORT #define NFS_PORT 2049 #endif #ifndef NFS_FHSIZE #define NFS_FHSIZE 32 #endif #ifndef HAVE_INET_ATON #define inet_aton(a,b) (0) #endif typedef dirpath mnt2arg_t; typedef dirpath mnt3arg_t; typedef dirpath mntarg_t; typedef struct fhstatus mnt2res_t; typedef struct mountres3 mnt3res_t; typedef union { mnt2res_t nfsv2; mnt3res_t nfsv3; } mntres_t; extern int nfs_mount_data_version; extern char *progname; extern int verbose; extern int sloppy; static inline enum clnt_stat nfs3_mount(CLIENT *clnt, mnt3arg_t *mnt3arg, mnt3res_t *mnt3res) { return clnt_call(clnt, MOUNTPROC3_MNT, (xdrproc_t) xdr_dirpath, (caddr_t) mnt3arg, (xdrproc_t) xdr_mountres3, (caddr_t) mnt3res, TIMEOUT); } static inline enum clnt_stat nfs2_mount(CLIENT *clnt, mnt2arg_t *mnt2arg, mnt2res_t *mnt2res) { return clnt_call(clnt, MOUNTPROC_MNT, (xdrproc_t) xdr_dirpath, (caddr_t) mnt2arg, (xdrproc_t) xdr_fhstatus, (caddr_t) mnt2res, TIMEOUT); } static int nfs_call_mount(clnt_addr_t *mnt_server, clnt_addr_t *nfs_server, mntarg_t *mntarg, mntres_t *mntres) { CLIENT *clnt; enum clnt_stat stat; int msock; if (!probe_bothports(mnt_server, nfs_server)) goto out_bad; clnt = mnt_openclnt(mnt_server, &msock); if (!clnt) goto out_bad; /* make pointers in xdr_mountres3 NULL so * that xdr_array allocates memory for us */ memset(mntres, 0, sizeof(*mntres)); switch (mnt_server->pmap.pm_vers) { case 3: stat = nfs3_mount(clnt, mntarg, &mntres->nfsv3); break; case 2: case 1: stat = nfs2_mount(clnt, mntarg, &mntres->nfsv2); break; default: goto out_bad; } if (stat != RPC_SUCCESS) { clnt_geterr(clnt, &rpc_createerr.cf_error); rpc_createerr.cf_stat = stat; } mnt_closeclnt(clnt, msock); if (stat == RPC_SUCCESS) return 1; out_bad: return 0; } static int parse_options(char *old_opts, struct nfs_mount_data *data, int *bg, int *retry, clnt_addr_t *mnt_server, clnt_addr_t *nfs_server, char *new_opts, const int opt_size) { struct sockaddr_in *mnt_saddr = &mnt_server->saddr; struct pmap *mnt_pmap = &mnt_server->pmap; struct pmap *nfs_pmap = &nfs_server->pmap; int len; char *opt, *opteq, *p, *opt_b, *tmp_opts; char *mounthost = NULL; char cbuf[128]; int open_quote = 0; data->flags = 0; *bg = 0; len = strlen(new_opts); tmp_opts = xstrdup(old_opts); for (p=tmp_opts, opt_b=NULL; p && *p; p++) { if (!opt_b) opt_b = p; /* begin of the option item */ if (*p == '"') open_quote ^= 1; /* reverse the status */ if (open_quote) continue; /* still in a quoted block */ if (*p == ',') *p = '\0'; /* terminate the option item */ if (*p == '\0' || *(p+1) == '\0') { opt = opt_b; /* opt is useful now */ opt_b = NULL; } else continue; /* still somewhere in the option item */ if (strlen(opt) >= sizeof(cbuf)) goto bad_parameter; if ((opteq = strchr(opt, '=')) && isdigit(opteq[1])) { int val = atoi(opteq + 1); *opteq = '\0'; if (!strcmp(opt, "rsize")) data->rsize = val; else if (!strcmp(opt, "wsize")) data->wsize = val; else if (!strcmp(opt, "timeo")) data->timeo = val; else if (!strcmp(opt, "retrans")) data->retrans = val; else if (!strcmp(opt, "acregmin")) data->acregmin = val; else if (!strcmp(opt, "acregmax")) data->acregmax = val; else if (!strcmp(opt, "acdirmin")) data->acdirmin = val; else if (!strcmp(opt, "acdirmax")) data->acdirmax = val; else if (!strcmp(opt, "actimeo")) { data->acregmin = val; data->acregmax = val; data->acdirmin = val; data->acdirmax = val; } else if (!strcmp(opt, "retry")) *retry = val; else if (!strcmp(opt, "port")) nfs_pmap->pm_port = val; else if (!strcmp(opt, "mountport")) mnt_pmap->pm_port = val; else if (!strcmp(opt, "mountprog")) mnt_pmap->pm_prog = val; else if (!strcmp(opt, "mountvers")) mnt_pmap->pm_vers = val; else if (!strcmp(opt, "mounthost")) mounthost=xstrndup(opteq+1, strcspn(opteq+1," \t\n\r,")); else if (!strcmp(opt, "nfsprog")) nfs_pmap->pm_prog = val; else if (!strcmp(opt, "nfsvers") || !strcmp(opt, "vers")) { nfs_pmap->pm_vers = val; opt = "nfsvers"; #if NFS_MOUNT_VERSION >= 2 } else if (!strcmp(opt, "namlen")) { if (nfs_mount_data_version >= 2) data->namlen = val; else if (sloppy) continue; else goto bad_parameter; #endif } else if (!strcmp(opt, "addr")) { /* ignore */; continue; } else if (sloppy) continue; else goto bad_parameter; sprintf(cbuf, "%s=%s,", opt, opteq+1); } else if (opteq) { *opteq = '\0'; if (!strcmp(opt, "proto")) { if (!strcmp(opteq+1, "udp")) { nfs_pmap->pm_prot = IPPROTO_UDP; mnt_pmap->pm_prot = IPPROTO_UDP; #if NFS_MOUNT_VERSION >= 2 data->flags &= ~NFS_MOUNT_TCP; } else if (!strcmp(opteq+1, "tcp") && nfs_mount_data_version > 2) { nfs_pmap->pm_prot = IPPROTO_TCP; mnt_pmap->pm_prot = IPPROTO_TCP; data->flags |= NFS_MOUNT_TCP; #endif } else if (sloppy) continue; else goto bad_parameter; #if NFS_MOUNT_VERSION >= 5 } else if (!strcmp(opt, "sec")) { char *secflavor = opteq+1; /* see RFC 2623 */ if (nfs_mount_data_version < 5) { printf(_("Warning: ignoring sec=%s option\n"), secflavor); continue; } else if (!strcmp(secflavor, "none")) data->pseudoflavor = AUTH_NONE; else if (!strcmp(secflavor, "sys")) data->pseudoflavor = AUTH_SYS; else if (!strcmp(secflavor, "krb5")) data->pseudoflavor = AUTH_GSS_KRB5; else if (!strcmp(secflavor, "krb5i")) data->pseudoflavor = AUTH_GSS_KRB5I; else if (!strcmp(secflavor, "krb5p")) data->pseudoflavor = AUTH_GSS_KRB5P; else if (sloppy) continue; else { printf(_("Warning: Unrecognized security flavor %s.\n"), secflavor); goto bad_parameter; } data->flags |= NFS_MOUNT_SECFLAVOUR; #endif } else if (!strcmp(opt, "mounthost")) mounthost=xstrndup(opteq+1, strcspn(opteq+1," \t\n\r,")); else if (!strcmp(opt, "context")) { char *context = opteq + 1; int ctxlen = strlen(context); if (ctxlen > NFS_MAX_CONTEXT_LEN) { nfs_error(_("context parameter exceeds" " limit of %d"), NFS_MAX_CONTEXT_LEN); goto bad_parameter; } /* The context string is in the format of * "system_u:object_r:...". We only want * the context str between the quotes. */ if (*context == '"') strncpy(data->context, context+1, ctxlen-2); else strncpy(data->context, context, NFS_MAX_CONTEXT_LEN); } else if (sloppy) continue; else goto bad_parameter; sprintf(cbuf, "%s=%s,", opt, opteq+1); } else { int val = 1; if (!strncmp(opt, "no", 2)) { val = 0; opt += 2; } if (!strcmp(opt, "bg")) *bg = val; else if (!strcmp(opt, "fg")) *bg = !val; else if (!strcmp(opt, "soft")) { data->flags &= ~NFS_MOUNT_SOFT; if (val) data->flags |= NFS_MOUNT_SOFT; } else if (!strcmp(opt, "hard")) { data->flags &= ~NFS_MOUNT_SOFT; if (!val) data->flags |= NFS_MOUNT_SOFT; } else if (!strcmp(opt, "intr")) { data->flags &= ~NFS_MOUNT_INTR; if (val) data->flags |= NFS_MOUNT_INTR; } else if (!strcmp(opt, "posix")) { data->flags &= ~NFS_MOUNT_POSIX; if (val) data->flags |= NFS_MOUNT_POSIX; } else if (!strcmp(opt, "cto")) { data->flags &= ~NFS_MOUNT_NOCTO; if (!val) data->flags |= NFS_MOUNT_NOCTO; } else if (!strcmp(opt, "ac")) { data->flags &= ~NFS_MOUNT_NOAC; if (!val) data->flags |= NFS_MOUNT_NOAC; #if NFS_MOUNT_VERSION >= 2 } else if (!strcmp(opt, "tcp")) { data->flags &= ~NFS_MOUNT_TCP; if (val) { if (nfs_mount_data_version < 2) goto bad_option; nfs_pmap->pm_prot = IPPROTO_TCP; mnt_pmap->pm_prot = IPPROTO_TCP; data->flags |= NFS_MOUNT_TCP; } else { mnt_pmap->pm_prot = IPPROTO_UDP; nfs_pmap->pm_prot = IPPROTO_UDP; } } else if (!strcmp(opt, "udp")) { data->flags &= ~NFS_MOUNT_TCP; if (!val) { if (nfs_mount_data_version < 2) goto bad_option; nfs_pmap->pm_prot = IPPROTO_TCP; mnt_pmap->pm_prot = IPPROTO_TCP; data->flags |= NFS_MOUNT_TCP; } else { nfs_pmap->pm_prot = IPPROTO_UDP; mnt_pmap->pm_prot = IPPROTO_UDP; } #endif #if NFS_MOUNT_VERSION >= 3 } else if (!strcmp(opt, "lock")) { data->flags &= ~NFS_MOUNT_NONLM; if (!val) { if (nfs_mount_data_version < 3) goto bad_option; data->flags |= NFS_MOUNT_NONLM; } #endif #if NFS_MOUNT_VERSION >= 4 } else if (!strcmp(opt, "broken_suid")) { data->flags &= ~NFS_MOUNT_BROKEN_SUID; if (val) { if (nfs_mount_data_version < 4) goto bad_option; data->flags |= NFS_MOUNT_BROKEN_SUID; } } else if (!strcmp(opt, "acl")) { data->flags &= ~NFS_MOUNT_NOACL; if (!val) data->flags |= NFS_MOUNT_NOACL; } else if (!strcmp(opt, "rdirplus")) { data->flags &= ~NFS_MOUNT_NORDIRPLUS; if (!val) data->flags |= NFS_MOUNT_NORDIRPLUS; } else if (!strcmp(opt, "sharecache")) { data->flags &= ~NFS_MOUNT_UNSHARED; if (!val) data->flags |= NFS_MOUNT_UNSHARED; #endif } else { bad_option: if (sloppy) continue; nfs_error(_("%s: Unsupported nfs mount option:" " %s%s"), progname, val ? "" : "no", opt); goto out_bad; } sprintf(cbuf, val ? "%s," : "no%s,", opt); } len += strlen(cbuf); if (len >= opt_size) { nfs_error(_("%s: excessively long option argument"), progname); goto out_bad; } strcat(new_opts, cbuf); } /* See if the nfs host = mount host. */ if (mounthost) { if (!nfs_gethostbyname(mounthost, mnt_saddr)) goto out_bad; *mnt_server->hostname = mounthost; } free(tmp_opts); return 1; bad_parameter: nfs_error(_("%s: Bad nfs mount parameter: %s\n"), progname, opt); out_bad: free(tmp_opts); return 0; } static int nfsmnt_check_compat(const struct pmap *nfs_pmap, const struct pmap *mnt_pmap) { unsigned int max_nfs_vers = (nfs_mount_data_version >= 4) ? 3 : 2; unsigned int max_mnt_vers = (nfs_mount_data_version >= 4) ? 3 : 2; if (nfs_pmap->pm_vers == 4) { nfs_error(_("%s: Please use '-t nfs4' " "instead of '-o vers=4'"), progname); goto out_bad; } if (nfs_pmap->pm_vers) { if (nfs_pmap->pm_vers > max_nfs_vers || nfs_pmap->pm_vers < 2) { nfs_error(_("%s: NFS version %ld is not supported"), progname, nfs_pmap->pm_vers); goto out_bad; } } if (mnt_pmap->pm_vers > max_mnt_vers) { nfs_error(_("%s: NFS mount version %ld is not supported"), progname, mnt_pmap->pm_vers); goto out_bad; } return 1; out_bad: return 0; } int nfsmount(const char *spec, const char *node, int flags, char **extra_opts, int fake, int running_bg) { char hostdir[1024]; char *hostname, *dirname, *old_opts, *mounthost = NULL; char new_opts[1024], cbuf[1024]; static struct nfs_mount_data data; int val; static int doonce = 0; clnt_addr_t mnt_server = { .hostname = &mounthost }; clnt_addr_t nfs_server = { .hostname = &hostname }; struct sockaddr_in *nfs_saddr = &nfs_server.saddr; struct pmap *mnt_pmap = &mnt_server.pmap, *nfs_pmap = &nfs_server.pmap; struct pmap save_mnt, save_nfs; int fsock = -1; mntres_t mntres; struct stat statbuf; char *s; int bg, retry; int retval = EX_FAIL; time_t t; time_t prevt; time_t timeout; if (strlen(spec) >= sizeof(hostdir)) { nfs_error(_("%s: excessively long host:dir argument"), progname); goto fail; } strcpy(hostdir, spec); if ((s = strchr(hostdir, ':'))) { hostname = hostdir; dirname = s + 1; *s = '\0'; /* Ignore all but first hostname in replicated mounts until they can be fully supported. (mack@sgi.com) */ if ((s = strchr(hostdir, ','))) { *s = '\0'; nfs_error(_("%s: warning: " "multiple hostnames not supported"), progname); } } else { nfs_error(_("%s: directory to mount not in host:dir format"), progname); goto fail; } if (!nfs_gethostbyname(hostname, nfs_saddr)) goto fail; mounthost = hostname; memcpy (&mnt_server.saddr, nfs_saddr, sizeof (mnt_server.saddr)); /* add IP address to mtab options for use when unmounting */ s = inet_ntoa(nfs_saddr->sin_addr); old_opts = *extra_opts; if (!old_opts) old_opts = ""; /* Set default options. * rsize/wsize (and bsize, for ver >= 3) are left 0 in order to * let the kernel decide. * timeo is filled in after we know whether it'll be TCP or UDP. */ memset(&data, 0, sizeof(data)); data.acregmin = 3; data.acregmax = 60; data.acdirmin = 30; data.acdirmax = 60; #if NFS_MOUNT_VERSION >= 2 data.namlen = NAME_MAX; #endif bg = 0; retry = -1; memset(mnt_pmap, 0, sizeof(*mnt_pmap)); mnt_pmap->pm_prog = MOUNTPROG; memset(nfs_pmap, 0, sizeof(*nfs_pmap)); nfs_pmap->pm_prog = NFS_PROGRAM; /* parse options */ new_opts[0] = 0; if (!parse_options(old_opts, &data, &bg, &retry, &mnt_server, &nfs_server, new_opts, sizeof(new_opts))) goto fail; if (!nfsmnt_check_compat(nfs_pmap, mnt_pmap)) goto fail; if (retry == -1) { if (bg) retry = 10000; /* 10000 mins == ~1 week*/ else retry = 2; /* 2 min default on fg mounts */ } #ifdef NFS_MOUNT_DEBUG printf(_("rsize = %d, wsize = %d, timeo = %d, retrans = %d\n"), data.rsize, data.wsize, data.timeo, data.retrans); printf(_("acreg (min, max) = (%d, %d), acdir (min, max) = (%d, %d)\n"), data.acregmin, data.acregmax, data.acdirmin, data.acdirmax); printf(_("port = %lu, bg = %d, retry = %d, flags = %.8x\n"), nfs_pmap->pm_port, bg, retry, data.flags); printf(_("mountprog = %lu, mountvers = %lu, nfsprog = %lu, nfsvers = %lu\n"), mnt_pmap->pm_prog, mnt_pmap->pm_vers, nfs_pmap->pm_prog, nfs_pmap->pm_vers); printf(_("soft = %d, intr = %d, posix = %d, nocto = %d, noac = %d"), (data.flags & NFS_MOUNT_SOFT) != 0, (data.flags & NFS_MOUNT_INTR) != 0, (data.flags & NFS_MOUNT_POSIX) != 0, (data.flags & NFS_MOUNT_NOCTO) != 0, (data.flags & NFS_MOUNT_NOAC) != 0); #if NFS_MOUNT_VERSION >= 2 printf(_(", tcp = %d"), (data.flags & NFS_MOUNT_TCP) != 0); #endif #if NFS_MOUNT_VERSION >= 4 printf(_(", noacl = %d"), (data.flags & NFS_MOUNT_NOACL) != 0); #endif #if NFS_MOUNT_VERSION >= 5 printf(_(", sec = %u"), data.pseudoflavor); printf(_(", readdirplus = %d"), (data.flags & NFS_MOUNT_NORDIRPLUS) != 0); #endif printf("\n"); #endif data.version = nfs_mount_data_version; if (flags & MS_REMOUNT) goto out_ok; /* create mount deamon client */ /* * The following loop implements the mount retries. On the first * call, "running_bg" is 0. When the mount times out, and the * "bg" option is set, the exit status EX_BG will be returned. * For a backgrounded mount, there will be a second call by the * child process with "running_bg" set to 1. * * The case where the mount point is not present and the "bg" * option is set, is treated as a timeout. This is done to * support nested mounts. * * The "retry" count specified by the user is the number of * minutes to retry before giving up. * * Only the first error message will be displayed. */ timeout = time(NULL) + 60 * retry; prevt = 0; t = 30; val = 1; memcpy(&save_nfs, nfs_pmap, sizeof(save_nfs)); memcpy(&save_mnt, mnt_pmap, sizeof(save_mnt)); for (;;) { if (bg && stat(node, &statbuf) == -1) { /* no mount point yet - sleep */ if (running_bg) { sleep(val); /* 1, 2, 4, 8, 16, 30, ... */ val *= 2; if (val > 30) val = 30; } } else { int stat; /* be careful not to use too many CPU cycles */ if (t - prevt < 30) sleep(30); stat = nfs_call_mount(&mnt_server, &nfs_server, &dirname, &mntres); if (stat) break; memcpy(nfs_pmap, &save_nfs, sizeof(*nfs_pmap)); memcpy(mnt_pmap, &save_mnt, sizeof(*mnt_pmap)); prevt = t; } if (!bg) { switch(rpc_createerr.cf_stat){ case RPC_TIMEDOUT: break; case RPC_SYSTEMERROR: if (errno == ETIMEDOUT) break; default: rpc_mount_errors(*nfs_server.hostname, 0, bg); goto fail; } t = time(NULL); if (t >= timeout) { rpc_mount_errors(*nfs_server.hostname, 0, bg); goto fail; } rpc_mount_errors(*nfs_server.hostname, 1, bg); continue; } if (!running_bg) { if (retry > 0) retval = EX_BG; goto fail; } t = time(NULL); if (t >= timeout) { rpc_mount_errors(*nfs_server.hostname, 0, bg); goto fail; } if (doonce++ < 1) rpc_mount_errors(*nfs_server.hostname, 1, bg); } if (mnt_pmap->pm_vers <= 2) { if (mntres.nfsv2.fhs_status != 0) { nfs_error(_("%s: %s:%s failed, reason given by server: %s"), progname, hostname, dirname, nfs_strerror(mntres.nfsv2.fhs_status)); goto fail; } memcpy(data.root.data, (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle, NFS_FHSIZE); #if NFS_MOUNT_VERSION >= 4 data.root.size = NFS_FHSIZE; memcpy(data.old_root.data, (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle, NFS_FHSIZE); #endif } else { #if NFS_MOUNT_VERSION >= 4 mountres3_ok *mountres; fhandle3 *fhandle; int i, n_flavors, *flavor, yum = 0; if (mntres.nfsv3.fhs_status != 0) { nfs_error(_("%s: %s:%s failed, reason given by server: %s"), progname, hostname, dirname, nfs_strerror(mntres.nfsv3.fhs_status)); goto fail; } #if NFS_MOUNT_VERSION >= 5 mountres = &mntres.nfsv3.mountres3_u.mountinfo; n_flavors = mountres->auth_flavors.auth_flavors_len; if (n_flavors <= 0) goto noauth_flavors; flavor = mountres->auth_flavors.auth_flavors_val; for (i = 0; i < n_flavors; ++i) { /* * Per RFC2623, section 2.7, we should prefer the * flavour listed first. * If no flavour requested, use the first simple * flavour that is offered. */ if (! (data.flags & NFS_MOUNT_SECFLAVOUR) && (flavor[i] == AUTH_SYS || flavor[i] == AUTH_NONE)) { data.pseudoflavor = flavor[i]; data.flags |= NFS_MOUNT_SECFLAVOUR; } if (flavor[i] == data.pseudoflavor) yum = 1; #ifdef NFS_MOUNT_DEBUG printf(_("auth flavor %d: %d\n"), i, flavor[i]); #endif } if (!yum) { nfs_error(_("%s: %s:%s failed, security flavor " "not supported"), progname, hostname, dirname); /* server has registered us in rmtab, send umount */ nfs_call_umount(&mnt_server, &dirname); goto fail; } noauth_flavors: #endif fhandle = &mntres.nfsv3.mountres3_u.mountinfo.fhandle; memset(data.old_root.data, 0, NFS_FHSIZE); memset(&data.root, 0, sizeof(data.root)); data.root.size = fhandle->fhandle3_len; memcpy(data.root.data, (char *) fhandle->fhandle3_val, fhandle->fhandle3_len); data.flags |= NFS_MOUNT_VER3; #endif } if (nfs_mount_data_version == 1) { /* create nfs socket for kernel */ if (nfs_pmap->pm_prot == IPPROTO_TCP) fsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); else fsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (fsock < 0) { perror(_("nfs socket")); goto fail; } if (bindresvport(fsock, 0) < 0) { perror(_("nfs bindresvport")); goto fail; } } #ifdef NFS_MOUNT_DEBUG printf(_("using port %lu for nfs deamon\n"), nfs_pmap->pm_port); #endif nfs_saddr->sin_port = htons(nfs_pmap->pm_port); /* * connect() the socket for kernels 1.3.10 and below only, * to avoid problems with multihomed hosts. * --Swen */ if (linux_version_code() <= MAKE_VERSION(1, 3, 10) && fsock != -1 && connect(fsock, (struct sockaddr *) nfs_saddr, sizeof (*nfs_saddr)) < 0) { perror(_("nfs connect")); goto fail; } #if NFS_MOUNT_VERSION >= 2 if (nfs_pmap->pm_prot == IPPROTO_TCP) data.flags |= NFS_MOUNT_TCP; else data.flags &= ~NFS_MOUNT_TCP; #endif /* prepare data structure for kernel */ data.fd = fsock; memcpy((char *) &data.addr, (char *) nfs_saddr, sizeof(data.addr)); strncpy(data.hostname, hostname, sizeof(data.hostname)); out_ok: /* Ensure we have enough padding for the following strcat()s */ if (strlen(new_opts) + strlen(s) + 30 >= sizeof(new_opts)) { nfs_error(_("%s: excessively long option argument"), progname); goto fail; } snprintf(cbuf, sizeof(cbuf)-1, "addr=%s", s); strcat(new_opts, cbuf); *extra_opts = xstrdup(new_opts); if (!fake && !(data.flags & NFS_MOUNT_NONLM)) { if (!start_statd()) { nfs_error(_("%s: rpc.statd is not running but is " "required for remote locking.\n" " Either use '-o nolock' to keep " "locks local, or start statd."), progname); goto fail; } } if (!fake) { if (mount(spec, node, "nfs", flags & ~(MS_USER|MS_USERS), &data)) { mount_error(spec, node, errno); goto fail; } } return EX_SUCCESS; /* abort */ fail: if (fsock != -1) close(fsock); return retval; }