From bdfd0d78bc44e73d693510e70087857785b3b521 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Wed, 24 Oct 2001 05:00:29 +0000 Subject: Major rework of the directory structure and the entire build system. -Erik --- nfsmount.c | 977 ------------------------------------------------------------- 1 file changed, 977 deletions(-) delete mode 100644 nfsmount.c (limited to 'nfsmount.c') diff --git a/nfsmount.c b/nfsmount.c deleted file mode 100644 index cd722acc3..000000000 --- a/nfsmount.c +++ /dev/null @@ -1,977 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * 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 Mi¶kiewicz - * - added Native Language Support - * - * Modified by Olaf Kirch and Trond Myklebust for new NFS code, - * plus NFSv3 stuff. - */ - -/* - * nfsmount.c,v 1.1.1.1 1993/11/18 08:40:51 jrs Exp - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "busybox.h" -#undef TRUE -#undef FALSE -#include -#include -#include -#include /* For the kernels nfs stuff */ -#include "nfsmount.h" - -#ifndef NFS_FHSIZE -static const int NFS_FHSIZE = 32; -#endif -#ifndef NFS_PORT -static const int NFS_PORT = 2049; -#endif - -/* Disable the nls stuff */ -# undef bindtextdomain -# define bindtextdomain(Domain, Directory) /* empty */ -# undef textdomain -# define textdomain(Domain) /* empty */ -# define _(Text) (Text) -# define N_(Text) (Text) - -static const int MS_MGC_VAL = 0xc0ed0000; /* Magic number indicatng "new" flags */ -static const int MS_RDONLY = 1; /* Mount read-only */ -static const int MS_NOSUID = 2; /* Ignore suid and sgid bits */ -static const int MS_NODEV = 4; /* Disallow access to device special files */ -static const int MS_NOEXEC = 8; /* Disallow program execution */ -static const int MS_SYNCHRONOUS = 16; /* Writes are synced at once */ -static const int MS_REMOUNT = 32; /* Alter flags of a mounted FS */ -static const int MS_MANDLOCK = 64; /* Allow mandatory locks on an FS */ -static const int S_QUOTA = 128; /* Quota initialized for file/directory/symlink */ -static const int S_APPEND = 256; /* Append-only file */ -static const int S_IMMUTABLE = 512; /* Immutable file */ -static const int MS_NOATIME = 1024; /* Do not update access times. */ -static const int MS_NODIRATIME = 2048; /* Do not update directory access times */ - - -/* - * We want to be able to compile mount on old kernels in such a way - * that the binary will work well on more recent kernels. - * Thus, if necessary we teach nfsmount.c the structure of new fields - * that will come later. - * - * Moreover, the new kernel includes conflict with glibc includes - * so it is easiest to ignore the kernel altogether (at compile time). - */ - -/* NOTE: Do not make this into a 'static const int' because the pre-processor - * needs to test this value in some #if statements. */ -#define NFS_MOUNT_VERSION 4 - -struct nfs2_fh { - char data[32]; -}; -struct nfs3_fh { - unsigned short size; - unsigned char data[64]; -}; - -struct nfs_mount_data { - int version; /* 1 */ - int fd; /* 1 */ - struct nfs2_fh old_root; /* 1 */ - int flags; /* 1 */ - int rsize; /* 1 */ - int wsize; /* 1 */ - int timeo; /* 1 */ - int retrans; /* 1 */ - int acregmin; /* 1 */ - int acregmax; /* 1 */ - int acdirmin; /* 1 */ - int acdirmax; /* 1 */ - struct sockaddr_in addr; /* 1 */ - char hostname[256]; /* 1 */ - int namlen; /* 2 */ - unsigned int bsize; /* 3 */ - struct nfs3_fh root; /* 4 */ -}; - -/* bits in the flags field */ - -static const int NFS_MOUNT_SOFT = 0x0001; /* 1 */ -static const int NFS_MOUNT_INTR = 0x0002; /* 1 */ -static const int NFS_MOUNT_SECURE = 0x0004; /* 1 */ -static const int NFS_MOUNT_POSIX = 0x0008; /* 1 */ -static const int NFS_MOUNT_NOCTO = 0x0010; /* 1 */ -static const int NFS_MOUNT_NOAC = 0x0020; /* 1 */ -static const int NFS_MOUNT_TCP = 0x0040; /* 2 */ -static const int NFS_MOUNT_VER3 = 0x0080; /* 3 */ -static const int NFS_MOUNT_KERBEROS = 0x0100; /* 3 */ -static const int NFS_MOUNT_NONLM = 0x0200; /* 3 */ - - -#define UTIL_LINUX_VERSION "2.10m" -#define util_linux_version "util-linux-2.10m" - -#define HAVE_inet_aton -#define HAVE_scsi_h -#define HAVE_blkpg_h -#define HAVE_kd_h -#define HAVE_termcap -#define HAVE_locale_h -#define HAVE_libintl_h -#define ENABLE_NLS -#define HAVE_langinfo_h -#define HAVE_progname -#define HAVE_openpty -#define HAVE_nanosleep -#define HAVE_personality -#define HAVE_tm_gmtoff - -static char *nfs_strerror(int status); - -#define MAKE_VERSION(p,q,r) (65536*(p) + 256*(q) + (r)) -#define MAX_NFSPROT ((nfs_mount_version >= 4) ? 3 : 2) - -static const int EX_FAIL = 32; /* mount failure */ -static const int EX_BG = 256; /* retry in background (internal only) */ - - -/* - * nfs_mount_version according to the sources seen at compile time. - */ -static int nfs_mount_version; - -/* - * Unfortunately, the kernel prints annoying console messages - * in case of an unexpected nfs mount version (instead of - * just returning some error). Therefore we'll have to try - * and figure out what version the kernel expects. - * - * Variables: - * KERNEL_NFS_MOUNT_VERSION: kernel sources at compile time - * NFS_MOUNT_VERSION: these nfsmount sources at compile time - * nfs_mount_version: version this source and running kernel can handle - */ -static void -find_kernel_nfs_mount_version(void) -{ - static int kernel_version = 0; - - if (kernel_version) - return; - - nfs_mount_version = NFS_MOUNT_VERSION; /* default */ - - kernel_version = get_kernel_revision(); - if (kernel_version) { - if (kernel_version < MAKE_VERSION(2,1,32)) - nfs_mount_version = 1; - else if (kernel_version < MAKE_VERSION(2,2,18) || - (kernel_version >= MAKE_VERSION(2,3,0) && - kernel_version < MAKE_VERSION(2,3,99))) - nfs_mount_version = 3; - else - nfs_mount_version = 4; /* since 2.3.99pre4 */ - } - if (nfs_mount_version > NFS_MOUNT_VERSION) - nfs_mount_version = NFS_MOUNT_VERSION; -} - -static struct pmap * -get_mountport(struct sockaddr_in *server_addr, - long unsigned prog, - long unsigned version, - long unsigned proto, - long unsigned port) -{ -struct pmaplist *pmap; -static struct pmap p = {0, 0, 0, 0}; - -server_addr->sin_port = PMAPPORT; -pmap = pmap_getmaps(server_addr); - -if (version > MAX_NFSPROT) - version = MAX_NFSPROT; -if (!prog) - prog = MOUNTPROG; -p.pm_prog = prog; -p.pm_vers = version; -p.pm_prot = proto; -p.pm_port = port; - -while (pmap) { - if (pmap->pml_map.pm_prog != prog) - goto next; - if (!version && p.pm_vers > pmap->pml_map.pm_vers) - goto next; - if (version > 2 && pmap->pml_map.pm_vers != version) - goto next; - if (version && version <= 2 && pmap->pml_map.pm_vers > 2) - goto next; - if (pmap->pml_map.pm_vers > MAX_NFSPROT || - (proto && p.pm_prot && pmap->pml_map.pm_prot != proto) || - (port && pmap->pml_map.pm_port != port)) - goto next; - memcpy(&p, &pmap->pml_map, sizeof(p)); -next: - pmap = pmap->pml_next; -} -if (!p.pm_vers) - p.pm_vers = MOUNTVERS; -if (!p.pm_port) - p.pm_port = MOUNTPORT; -if (!p.pm_prot) - p.pm_prot = IPPROTO_TCP; -return &p; -} - -int nfsmount(const char *spec, const char *node, int *flags, - char **extra_opts, char **mount_opts, int running_bg) -{ - static char *prev_bg_host; - char hostdir[1024]; - CLIENT *mclient; - char *hostname; - char *pathname; - char *old_opts; - char *mounthost=NULL; - char new_opts[1024]; - struct timeval total_timeout; - enum clnt_stat clnt_stat; - static struct nfs_mount_data data; - char *opt, *opteq; - int val; - struct hostent *hp; - struct sockaddr_in server_addr; - struct sockaddr_in mount_server_addr; - struct pmap* pm_mnt; - int msock, fsock; - struct timeval retry_timeout; - union { - struct fhstatus nfsv2; - struct mountres3 nfsv3; - } status; - struct stat statbuf; - char *s; - int port; - int mountport; - int proto; - int bg; - int soft; - int intr; - int posix; - int nocto; - int noac; - int nolock; - int retry; - int tcp; - int mountprog; - int mountvers; - int nfsprog; - int nfsvers; - int retval; - time_t t; - time_t prevt; - time_t timeout; - - find_kernel_nfs_mount_version(); - - retval = EX_FAIL; - msock = fsock = -1; - mclient = NULL; - if (strlen(spec) >= sizeof(hostdir)) { - error_msg("excessively long host:dir argument"); - goto fail; - } - strcpy(hostdir, spec); - if ((s = strchr(hostdir, ':'))) { - hostname = hostdir; - pathname = 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'; - error_msg("warning: multiple hostnames not supported"); - } - } else { - error_msg("directory to mount not in host:dir format"); - goto fail; - } - - server_addr.sin_family = AF_INET; -#ifdef HAVE_inet_aton - if (!inet_aton(hostname, &server_addr.sin_addr)) -#endif - { - if ((hp = gethostbyname(hostname)) == NULL) { - herror_msg("%s", hostname); - goto fail; - } else { - if (hp->h_length > sizeof(struct in_addr)) { - error_msg("got bad hp->h_length"); - hp->h_length = sizeof(struct in_addr); - } - memcpy(&server_addr.sin_addr, - hp->h_addr, hp->h_length); - } - } - - memcpy (&mount_server_addr, &server_addr, sizeof (mount_server_addr)); - - /* add IP address to mtab options for use when unmounting */ - - s = inet_ntoa(server_addr.sin_addr); - old_opts = *extra_opts; - if (!old_opts) - old_opts = ""; - if (strlen(old_opts) + strlen(s) + 10 >= sizeof(new_opts)) { - error_msg("excessively long option argument"); - goto fail; - } - sprintf(new_opts, "%s%saddr=%s", - old_opts, *old_opts ? "," : "", s); - *extra_opts = xstrdup(new_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.retrans = 3; - data.acregmin = 3; - data.acregmax = 60; - data.acdirmin = 30; - data.acdirmax = 60; -#if NFS_MOUNT_VERSION >= 2 - data.namlen = NAME_MAX; -#endif - - bg = 0; - soft = 0; - intr = 0; - posix = 0; - nocto = 0; - nolock = 0; - noac = 0; - retry = 10000; /* 10000 minutes ~ 1 week */ - tcp = 0; - - mountprog = MOUNTPROG; - mountvers = 0; - port = 0; - mountport = 0; - nfsprog = NFS_PROGRAM; - nfsvers = 0; - - /* parse options */ - - for (opt = strtok(old_opts, ","); opt; opt = strtok(NULL, ",")) { - if ((opteq = strchr(opt, '='))) { - 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")) - port = val; - else if (!strcmp(opt, "mountport")) - mountport = val; - else if (!strcmp(opt, "mounthost")) - mounthost=xstrndup(opteq+1, - strcspn(opteq+1," \t\n\r,")); - else if (!strcmp(opt, "mountprog")) - mountprog = val; - else if (!strcmp(opt, "mountvers")) - mountvers = val; - else if (!strcmp(opt, "nfsprog")) - nfsprog = val; - else if (!strcmp(opt, "nfsvers") || - !strcmp(opt, "vers")) - nfsvers = val; - else if (!strcmp(opt, "proto")) { - if (!strncmp(opteq+1, "tcp", 3)) - tcp = 1; - else if (!strncmp(opteq+1, "udp", 3)) - tcp = 0; - else - printf(_("Warning: Unrecognized proto= option.\n")); - } else if (!strcmp(opt, "namlen")) { -#if NFS_MOUNT_VERSION >= 2 - if (nfs_mount_version >= 2) - data.namlen = val; - else -#endif - printf(_("Warning: Option namlen is not supported.\n")); - } else if (!strcmp(opt, "addr")) - /* ignore */; - else { - printf(_("unknown nfs mount parameter: " - "%s=%d\n"), opt, val); - goto fail; - } - } - else { - 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")) - soft = val; - else if (!strcmp(opt, "hard")) - soft = !val; - else if (!strcmp(opt, "intr")) - intr = val; - else if (!strcmp(opt, "posix")) - posix = val; - else if (!strcmp(opt, "cto")) - nocto = !val; - else if (!strcmp(opt, "ac")) - noac = !val; - else if (!strcmp(opt, "tcp")) - tcp = val; - else if (!strcmp(opt, "udp")) - tcp = !val; - else if (!strcmp(opt, "lock")) { - if (nfs_mount_version >= 3) - nolock = !val; - else - printf(_("Warning: option nolock is not supported.\n")); - } else { - printf(_("unknown nfs mount option: " - "%s%s\n"), val ? "" : "no", opt); - goto fail; - } - } - } - proto = (tcp) ? IPPROTO_TCP : IPPROTO_UDP; - - data.flags = (soft ? NFS_MOUNT_SOFT : 0) - | (intr ? NFS_MOUNT_INTR : 0) - | (posix ? NFS_MOUNT_POSIX : 0) - | (nocto ? NFS_MOUNT_NOCTO : 0) - | (noac ? NFS_MOUNT_NOAC : 0); -#if NFS_MOUNT_VERSION >= 2 - if (nfs_mount_version >= 2) - data.flags |= (tcp ? NFS_MOUNT_TCP : 0); -#endif -#if NFS_MOUNT_VERSION >= 3 - if (nfs_mount_version >= 3) - data.flags |= (nolock ? NFS_MOUNT_NONLM : 0); -#endif - if (nfsvers > MAX_NFSPROT) { - error_msg("NFSv%d not supported!", nfsvers); - return 0; - } - if (mountvers > MAX_NFSPROT) { - error_msg("NFSv%d not supported!", nfsvers); - return 0; - } - if (nfsvers && !mountvers) - mountvers = (nfsvers < 3) ? 1 : nfsvers; - if (nfsvers && nfsvers < mountvers) { - mountvers = nfsvers; - } - - /* Adjust options if none specified */ - if (!data.timeo) - data.timeo = tcp ? 70 : 7; - -#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 = %d, bg = %d, retry = %d, flags = %.8x\n", - port, bg, retry, data.flags); - printf("mountprog = %d, mountvers = %d, nfsprog = %d, nfsvers = %d\n", - mountprog, mountvers, nfsprog, nfsvers); - printf("soft = %d, intr = %d, posix = %d, nocto = %d, noac = %d\n", - (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\n", - (data.flags & NFS_MOUNT_TCP) != 0); -#endif -#endif - - data.version = nfs_mount_version; - *mount_opts = (char *) &data; - - if (*flags & MS_REMOUNT) - return 0; - - /* - * If the previous mount operation on the same host was - * backgrounded, and the "bg" for this mount is also set, - * give up immediately, to avoid the initial timeout. - */ - if (bg && !running_bg && - prev_bg_host && strcmp(hostname, prev_bg_host) == 0) { - if (retry > 0) - retval = EX_BG; - return retval; - } - - /* create mount deamon client */ - /* See if the nfs host = mount host. */ - if (mounthost) { - if (mounthost[0] >= '0' && mounthost[0] <= '9') { - mount_server_addr.sin_family = AF_INET; - mount_server_addr.sin_addr.s_addr = inet_addr(hostname); - } else { - if ((hp = gethostbyname(mounthost)) == NULL) { - herror_msg("%s", mounthost); - goto fail; - } else { - if (hp->h_length > sizeof(struct in_addr)) { - error_msg("got bad hp->h_length?"); - hp->h_length = sizeof(struct in_addr); - } - mount_server_addr.sin_family = AF_INET; - memcpy(&mount_server_addr.sin_addr, - hp->h_addr, hp->h_length); - } - } - } - - /* - * 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. - */ - retry_timeout.tv_sec = 3; - retry_timeout.tv_usec = 0; - total_timeout.tv_sec = 20; - total_timeout.tv_usec = 0; - timeout = time(NULL) + 60 * retry; - prevt = 0; - t = 30; - val = 1; - for (;;) { - if (bg && stat(node, &statbuf) == -1) { - if (running_bg) { - sleep(val); /* 1, 2, 4, 8, 16, 30, ... */ - val *= 2; - if (val > 30) - val = 30; - } - } else { - /* be careful not to use too many CPU cycles */ - if (t - prevt < 30) - sleep(30); - - pm_mnt = get_mountport(&mount_server_addr, - mountprog, - mountvers, - proto, - mountport); - - /* contact the mount daemon via TCP */ - mount_server_addr.sin_port = htons(pm_mnt->pm_port); - msock = RPC_ANYSOCK; - - switch (pm_mnt->pm_prot) { - case IPPROTO_UDP: - mclient = clntudp_create(&mount_server_addr, - pm_mnt->pm_prog, - pm_mnt->pm_vers, - retry_timeout, - &msock); - if (mclient) - break; - mount_server_addr.sin_port = htons(pm_mnt->pm_port); - msock = RPC_ANYSOCK; - case IPPROTO_TCP: - mclient = clnttcp_create(&mount_server_addr, - pm_mnt->pm_prog, - pm_mnt->pm_vers, - &msock, 0, 0); - break; - default: - mclient = 0; - } - if (mclient) { - /* try to mount hostname:pathname */ - mclient->cl_auth = authunix_create_default(); - - /* make pointers in xdr_mountres3 NULL so - * that xdr_array allocates memory for us - */ - memset(&status, 0, sizeof(status)); - - if (pm_mnt->pm_vers == 3) - clnt_stat = clnt_call(mclient, MOUNTPROC3_MNT, - (xdrproc_t) xdr_dirpath, - (caddr_t) &pathname, - (xdrproc_t) xdr_mountres3, - (caddr_t) &status, - total_timeout); - else - clnt_stat = clnt_call(mclient, MOUNTPROC_MNT, - (xdrproc_t) xdr_dirpath, - (caddr_t) &pathname, - (xdrproc_t) xdr_fhstatus, - (caddr_t) &status, - total_timeout); - - if (clnt_stat == RPC_SUCCESS) - break; /* we're done */ - if (errno != ECONNREFUSED) { - clnt_perror(mclient, "mount"); - goto fail; /* don't retry */ - } - if (!running_bg && prevt == 0) - clnt_perror(mclient, "mount"); - auth_destroy(mclient->cl_auth); - clnt_destroy(mclient); - mclient = 0; - close(msock); - } else { - if (!running_bg && prevt == 0) - clnt_pcreateerror("mount"); - } - prevt = t; - } - if (!bg) - goto fail; - if (!running_bg) { - prev_bg_host = xstrdup(hostname); - if (retry > 0) - retval = EX_BG; - goto fail; - } - t = time(NULL); - if (t >= timeout) - goto fail; - } - nfsvers = (pm_mnt->pm_vers < 2) ? 2 : pm_mnt->pm_vers; - - if (nfsvers == 2) { - if (status.nfsv2.fhs_status != 0) { - error_msg("%s:%s failed, reason given by server: %s", - hostname, pathname, - nfs_strerror(status.nfsv2.fhs_status)); - goto fail; - } - memcpy(data.root.data, - (char *) status.nfsv2.fhstatus_u.fhs_fhandle, - NFS_FHSIZE); -#if NFS_MOUNT_VERSION >= 4 - data.root.size = NFS_FHSIZE; - memcpy(data.old_root.data, - (char *) status.nfsv2.fhstatus_u.fhs_fhandle, - NFS_FHSIZE); -#endif - } else { -#if NFS_MOUNT_VERSION >= 4 - fhandle3 *my_fhandle; - if (status.nfsv3.fhs_status != 0) { - error_msg("%s:%s failed, reason given by server: %s", - hostname, pathname, - nfs_strerror(status.nfsv3.fhs_status)); - goto fail; - } - my_fhandle = &status.nfsv3.mountres3_u.mountinfo.fhandle; - memset(data.old_root.data, 0, NFS_FHSIZE); - memset(&data.root, 0, sizeof(data.root)); - data.root.size = my_fhandle->fhandle3_len; - memcpy(data.root.data, - (char *) my_fhandle->fhandle3_val, - my_fhandle->fhandle3_len); - - data.flags |= NFS_MOUNT_VER3; -#endif - } - - /* create nfs socket for kernel */ - - if (tcp) { - if (nfs_mount_version < 3) { - printf(_("NFS over TCP is not supported.\n")); - goto fail; - } - 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; - } - if (port == 0) { - server_addr.sin_port = PMAPPORT; - port = pmap_getport(&server_addr, nfsprog, nfsvers, - tcp ? IPPROTO_TCP : IPPROTO_UDP); - if (port == 0) - port = NFS_PORT; -#ifdef NFS_MOUNT_DEBUG - else - printf(_("used portmapper to find NFS port\n")); -#endif - } -#ifdef NFS_MOUNT_DEBUG - printf(_("using port %d for nfs deamon\n"), port); -#endif - server_addr.sin_port = htons(port); - /* - * connect() the socket for kernels 1.3.10 and below only, - * to avoid problems with multihomed hosts. - * --Swen - */ - if (get_kernel_revision() <= 66314 - && connect(fsock, (struct sockaddr *) &server_addr, - sizeof (server_addr)) < 0) { - perror(_("nfs connect")); - goto fail; - } - - /* prepare data structure for kernel */ - - data.fd = fsock; - memcpy((char *) &data.addr, (char *) &server_addr, sizeof(data.addr)); - strncpy(data.hostname, hostname, sizeof(data.hostname)); - - /* clean up */ - - auth_destroy(mclient->cl_auth); - clnt_destroy(mclient); - close(msock); - return 0; - - /* abort */ - -fail: - if (msock != -1) { - if (mclient) { - auth_destroy(mclient->cl_auth); - clnt_destroy(mclient); - } - close(msock); - } - if (fsock != -1) - close(fsock); - return retval; -} - -/* - * We need to translate between nfs status return values and - * the local errno values which may not be the same. - * - * Andreas Schwab : change errno: - * "after #include the symbol errno is reserved for any use, - * it cannot even be used as a struct tag or field name". - */ - -#ifndef EDQUOT -#define EDQUOT ENOSPC -#endif - -static struct { - enum nfs_stat stat; - int errnum; -} nfs_errtbl[] = { - { NFS_OK, 0 }, - { NFSERR_PERM, EPERM }, - { NFSERR_NOENT, ENOENT }, - { NFSERR_IO, EIO }, - { NFSERR_NXIO, ENXIO }, - { NFSERR_ACCES, EACCES }, - { NFSERR_EXIST, EEXIST }, - { NFSERR_NODEV, ENODEV }, - { NFSERR_NOTDIR, ENOTDIR }, - { NFSERR_ISDIR, EISDIR }, -#ifdef NFSERR_INVAL - { NFSERR_INVAL, EINVAL }, /* that Sun forgot */ -#endif - { NFSERR_FBIG, EFBIG }, - { NFSERR_NOSPC, ENOSPC }, - { NFSERR_ROFS, EROFS }, - { NFSERR_NAMETOOLONG, ENAMETOOLONG }, - { NFSERR_NOTEMPTY, ENOTEMPTY }, - { NFSERR_DQUOT, EDQUOT }, - { NFSERR_STALE, ESTALE }, -#ifdef EWFLUSH - { NFSERR_WFLUSH, EWFLUSH }, -#endif - /* Throw in some NFSv3 values for even more fun (HP returns these) */ - { 71, EREMOTE }, - - { -1, EIO } -}; - -static char *nfs_strerror(int status) -{ - int i; - static char buf[256]; - - for (i = 0; nfs_errtbl[i].stat != -1; i++) { - if (nfs_errtbl[i].stat == status) - return strerror(nfs_errtbl[i].errnum); - } - sprintf(buf, _("unknown nfs status return value: %d"), status); - return buf; -} - -static bool_t -xdr_fhandle (XDR *xdrs, fhandle objp) -{ - //register int32_t *buf; - - if (!xdr_opaque (xdrs, objp, FHSIZE)) - return FALSE; - return TRUE; -} - -bool_t -xdr_fhstatus (XDR *xdrs, fhstatus *objp) -{ - //register int32_t *buf; - - if (!xdr_u_int (xdrs, &objp->fhs_status)) - return FALSE; - switch (objp->fhs_status) { - case 0: - if (!xdr_fhandle (xdrs, objp->fhstatus_u.fhs_fhandle)) - return FALSE; - break; - default: - break; - } - return TRUE; -} - -bool_t -xdr_dirpath (XDR *xdrs, dirpath *objp) -{ - //register int32_t *buf; - - if (!xdr_string (xdrs, objp, MNTPATHLEN)) - return FALSE; - return TRUE; -} - -bool_t -xdr_fhandle3 (XDR *xdrs, fhandle3 *objp) -{ - //register int32_t *buf; - - if (!xdr_bytes (xdrs, (char **)&objp->fhandle3_val, (u_int *) &objp->fhandle3_len, FHSIZE3)) - return FALSE; - return TRUE; -} - -bool_t -xdr_mountres3_ok (XDR *xdrs, mountres3_ok *objp) -{ - //register int32_t *buf; - - if (!xdr_fhandle3 (xdrs, &objp->fhandle)) - return FALSE; - if (!xdr_array (xdrs, (char **)&objp->auth_flavours.auth_flavours_val, (u_int *) &objp->auth_flavours.auth_flavours_len, ~0, - sizeof (int), (xdrproc_t) xdr_int)) - return FALSE; - return TRUE; -} - -bool_t -xdr_mountstat3 (XDR *xdrs, mountstat3 *objp) -{ - //register int32_t *buf; - - if (!xdr_enum (xdrs, (enum_t *) objp)) - return FALSE; - return TRUE; -} - -bool_t -xdr_mountres3 (XDR *xdrs, mountres3 *objp) -{ - //register int32_t *buf; - - if (!xdr_mountstat3 (xdrs, &objp->fhs_status)) - return FALSE; - switch (objp->fhs_status) { - case MNT_OK: - if (!xdr_mountres3_ok (xdrs, &objp->mountres3_u.mountinfo)) - return FALSE; - break; - default: - break; - } - return TRUE; -} - -- cgit v1.2.3