557 lines
18 KiB
C
557 lines
18 KiB
C
/*
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* nfsinstall.c - code to set up nfs installs
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*
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* Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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* 2006, 2007 Red Hat, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author(s): Erik Troan <ewt@redhat.com>
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* Matt Wilson <msw@redhat.com>
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* Michael Fulbright <msf@redhat.com>
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* Jeremy Katz <katzj@redhat.com>
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*/
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#include <fcntl.h>
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#include <newt.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <glib.h>
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#include <nm-client.h>
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#include <nm-device.h>
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#include <nm-dhcp4-config.h>
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#include "copy.h"
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#include "loader.h"
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#include "lang.h"
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#include "loadermisc.h"
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#include "kickstart.h"
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#include "log.h"
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#include "method.h"
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#include "nfsinstall.h"
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#include "net.h"
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#include "cdinstall.h"
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#include "windows.h"
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#include "../isys/imount.h"
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#include "../isys/iface.h"
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/* boot flags */
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extern uint64_t flags;
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static int nfsGetSetup(char ** hostptr, char ** dirptr, char ** optsptr) {
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struct newtWinEntry entries[4];
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char * buf;
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char * newServer = *hostptr ? strdup(*hostptr) : NULL;
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char * newDir = *dirptr ? strdup(*dirptr) : NULL;
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char * newMountOpts = *optsptr ? strdup(*optsptr) : NULL;
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int rc;
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entries[0].text = _("NFS server name:");
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entries[0].value = &newServer;
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entries[0].flags = NEWT_FLAG_SCROLL;
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checked_asprintf(&entries[1].text, _("%s directory:"), getProductName());
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entries[1].value = &newDir;
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entries[1].flags = NEWT_FLAG_SCROLL;
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entries[2].text = _("NFS mount options (optional):");
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entries[2].value = &newMountOpts;
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entries[2].flags = NEWT_FLAG_SCROLL;
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entries[3].text = NULL;
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entries[3].value = NULL;
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if (asprintf(&buf, _("Please enter the server and path to your %s "
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"installation image and optionally additional "
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"NFS mount options."), getProductName()) == -1) {
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logMessage(CRITICAL, "%s: %d: %m", __func__, __LINE__);
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abort();
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}
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do {
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rc = newtWinEntries(_("NFS Setup"), buf, 60, 5, 15,
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24, entries, _("OK"), _("Back"), NULL);
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} while ((!strcmp(newServer, "") || !strcmp(newDir, "")) && rc != 2);
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free(buf);
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free(entries[1].text);
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if (rc == 2) {
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if (newServer) free(newServer);
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if (newDir) free(newDir);
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if (newMountOpts) free(newMountOpts);
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return LOADER_BACK;
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}
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if (*hostptr) free(*hostptr);
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if (*dirptr) free(*dirptr);
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if (*optsptr) free(*optsptr);
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*hostptr = newServer;
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*dirptr = newDir;
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*optsptr = newMountOpts;
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return 0;
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}
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void parseNfsHostPathOpts(char *url, char **host, char **path, char **opts) {
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char *tmp;
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char *hostsrc;
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logMessage(DEBUGLVL, "parseNfsHostPathOpts url: |%s|", url);
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hostsrc = strdup(url);
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*host = hostsrc;
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tmp = strchr(*host, ':');
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if (tmp) {
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*path = strdup(tmp + 1);
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*tmp = '\0';
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}
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else {
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*path = malloc(sizeof(char *));
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**path = '\0';
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}
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tmp = strchr(*path, ':');
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if (tmp && (strlen(tmp) > 1)) {
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char * c = tmp;
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*opts = *host;
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*host = *path;
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*path = strdup(c + 1);
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*c = '\0';
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} else {
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*opts = NULL;
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}
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logMessage(DEBUGLVL, "parseNfsHostPathOpts host: |%s|", *host);
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logMessage(DEBUGLVL, "parseNfsHostPathOpts path: |%s|", *path);
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logMessage(DEBUGLVL, "parseNfsHostPathOpts opts: |%s|", *opts);
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}
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static void addDefaultKickstartFile(char **file, char *ip) {
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/* if the filename ends with / or is null, use default kickstart
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* name of IP_ADDRESS-kickstart appended to *file
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*/
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if ((*file) && (((*file)[strlen(*file) - 1] == '/') ||
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((*file)[strlen(*file) - 1] == '\0'))) {
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checked_asprintf(file, "%s%s-kickstart", *file, ip);
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logMessage(DEBUGLVL, "addDefaultKickstartFile file: |%s|", *file);
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}
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}
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char * mountNfsImage(struct installMethod * method,
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char * location, struct loaderData_s * loaderData) {
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char * host = NULL;
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char * directory = NULL;
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char * mountOpts = NULL;
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char * fullPath = NULL;
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char * url = NULL;
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enum { NFS_STAGE_NFS, NFS_STAGE_MOUNT, NFS_STAGE_DONE,
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NFS_STAGE_UPDATES } stage = NFS_STAGE_NFS;
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int rc;
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/* JKFIXME: ASSERT -- we have a network device setup when we get here */
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while (stage != NFS_STAGE_DONE) {
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switch (stage) {
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case NFS_STAGE_NFS:
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if (loaderData->method == METHOD_NFS && loaderData->stage2Data) {
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host = ((struct nfsInstallData *)loaderData->stage2Data)->host;
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directory = ((struct nfsInstallData *)loaderData->stage2Data)->directory;
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if (((struct nfsInstallData *)
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loaderData->stage2Data)->mountOpts == NULL) {
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mountOpts = strdup("ro");
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} else {
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checked_asprintf(&mountOpts, "ro,%s",
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((struct nfsInstallData *)
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loaderData->stage2Data)->mountOpts);
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}
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logMessage(INFO, "host is %s, dir is %s, opts are '%s'", host, directory, mountOpts);
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if (!host || !directory) {
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logMessage(ERROR, "missing host or directory specification");
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if (loaderData->inferredStage2)
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loaderData->invalidRepoParam = 1;
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loaderData->method = -1;
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break;
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} else {
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host = strdup(host);
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directory = strdup(directory);
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}
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} else {
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char *colonopts, *substr, *tmp;
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logMessage(INFO, "going to do nfsGetSetup");
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if (nfsGetSetup(&host, &directory, &mountOpts) == LOADER_BACK) {
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loaderData->stage2Data = NULL;
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return NULL;
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}
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/* If the user-provided URL points at a repo instead of a
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* stage2 image, fix that up now.
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*/
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substr = strstr(directory, ".img");
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if (!substr || (substr && *(substr+4) != '\0')) {
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if (mountOpts && strlen(mountOpts)) {
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checked_asprintf(&colonopts, ":%s", mountOpts);
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} else {
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colonopts = strdup("");
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}
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checked_asprintf(&(loaderData->instRepo), "nfs%s:%s:%s",
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colonopts, host, directory);
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checked_asprintf(&tmp, "nfs%s:%s:%s/images/install.img",
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colonopts, host, directory);
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setStage2LocFromCmdline(tmp, loaderData);
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free(host);
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free(directory);
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free(mountOpts);
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free(colonopts);
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free(tmp);
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continue;
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}
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loaderData->invalidRepoParam = 1;
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}
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stage = NFS_STAGE_MOUNT;
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break;
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case NFS_STAGE_MOUNT: {
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char *buf;
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checked_asprintf(&fullPath, "%s:%.*s", host,
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(int) (strrchr(directory, '/')-directory),
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directory);
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logMessage(INFO, "mounting nfs path %s", fullPath);
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stage = NFS_STAGE_NFS;
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if (!doPwMount(fullPath, "/mnt/stage2", "nfs", mountOpts, NULL)) {
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checked_asprintf(&buf, "/mnt/stage2/%s",
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strrchr(directory, '/'));
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if (!access(buf, R_OK)) {
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logMessage(INFO, "can access %s", buf);
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rc = mountStage2(buf);
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if (rc == 0) {
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stage = NFS_STAGE_UPDATES;
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checked_asprintf(&url, "nfs:%s:%s", host,
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directory);
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free(buf);
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break;
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} else {
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logMessage(WARNING, "unable to mount %s", buf);
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free(buf);
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break;
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}
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} else {
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logMessage(WARNING, "unable to access %s", buf);
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free(buf);
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umount("/mnt/stage2");
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}
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} else {
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newtWinMessage(_("Error"), _("OK"),
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_("That directory could not be mounted from "
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"the server."));
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if (loaderData->method >= 0)
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loaderData->method = -1;
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if (loaderData->inferredStage2)
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loaderData->invalidRepoParam = 1;
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break;
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}
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checked_asprintf(&buf,
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_("That directory does not seem to "
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"contain a %s installation image."),
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getProductName());
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newtWinMessage(_("Error"), _("OK"), buf);
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free(buf);
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if (loaderData->method >= 0)
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loaderData->method = -1;
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if (loaderData->inferredStage2)
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loaderData->invalidRepoParam = 1;
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break;
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}
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case NFS_STAGE_UPDATES: {
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char *buf;
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checked_asprintf(&buf, "%.*s/RHupdates",
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(int) (strrchr(fullPath, '/')-fullPath),
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fullPath);
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logMessage(INFO, "mounting nfs path %s for updates", buf);
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if (!doPwMount(buf, "/tmp/update-disk", "nfs", mountOpts, NULL)) {
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logMessage(INFO, "Using RHupdates/ for NFS install");
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copyDirectory("/tmp/update-disk", "/tmp/updates", NULL, NULL);
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umount("/tmp/update-disk");
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unlink("/tmp/update-disk");
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} else {
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logMessage(INFO, "No RHupdates/ directory found, skipping");
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}
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stage = NFS_STAGE_DONE;
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break;
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}
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case NFS_STAGE_DONE:
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break;
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}
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}
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free(host);
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free(directory);
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if (mountOpts)
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free(mountOpts);
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if (fullPath)
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free(fullPath);
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return url;
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}
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void setKickstartNfs(struct loaderData_s * loaderData, int argc,
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char ** argv) {
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char *substr = NULL;
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gchar *host = NULL, *dir = NULL, *mountOpts = NULL;
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GOptionContext *optCon = g_option_context_new(NULL);
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GError *optErr = NULL;
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GOptionEntry ksNfsOptions[] = {
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{ "server", 0, 0, G_OPTION_ARG_STRING, &host, NULL, NULL },
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{ "dir", 0, 0, G_OPTION_ARG_STRING, &dir, NULL, NULL },
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{ "opts", 0, 0, G_OPTION_ARG_STRING, &mountOpts, NULL, NULL },
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{ NULL },
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};
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logMessage(INFO, "kickstartFromNfs");
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g_option_context_set_help_enabled(optCon, FALSE);
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g_option_context_add_main_entries(optCon, ksNfsOptions, NULL);
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if (!g_option_context_parse(optCon, &argc, &argv, &optErr)) {
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startNewt();
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newtWinMessage(_("Kickstart Error"), _("OK"),
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_("Bad argument to NFS kickstart method "
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"command: %s"), optErr->message);
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g_error_free(optErr);
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g_option_context_free(optCon);
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return;
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}
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g_option_context_free(optCon);
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if (!host || !dir) {
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logMessage(ERROR, "host and directory for nfs kickstart not specified");
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return;
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}
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loaderData->method = METHOD_NFS;
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loaderData->stage2Data = NULL;
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substr = strstr(dir, ".img");
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if (!substr || (substr && *(substr+4) != '\0')) {
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checked_asprintf(&(loaderData->instRepo), "nfs:%s:%s", host, dir);
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logMessage(INFO, "results of nfs, host is %s, dir is %s, opts are '%s'",
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host, dir, mountOpts);
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} else {
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loaderData->stage2Data = calloc(sizeof(struct nfsInstallData *), 1);
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((struct nfsInstallData *)loaderData->stage2Data)->host = host;
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((struct nfsInstallData *)loaderData->stage2Data)->directory = dir;
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((struct nfsInstallData *)loaderData->stage2Data)->mountOpts = mountOpts;
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logMessage(INFO, "results of nfs, host is %s, dir is %s, opts are '%s'",
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((struct nfsInstallData *) loaderData->stage2Data)->host,
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((struct nfsInstallData *) loaderData->stage2Data)->directory,
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((struct nfsInstallData *) loaderData->stage2Data)->mountOpts);
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}
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}
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int getFileFromNfs(char * url, char * dest, struct loaderData_s * loaderData) {
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char * host = NULL, *path = NULL, * file = NULL, * opts = NULL;
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char * chk = NULL, *ip = NULL;
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int failed = 0, i = 0;
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iface_t iface;
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NMClient *client = NULL;
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NMState state;
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const GPtrArray *devices;
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if (kickstartNetworkUp(loaderData, &iface)) {
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logMessage(ERROR, "unable to bring up network");
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return 1;
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}
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/* if they just did 'linux ks', they want us to figure it out from
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* the dhcp/bootp information
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*/
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if (!url) {
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g_type_init();
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client = nm_client_new();
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if (!client) {
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logMessage(CRITICAL, "%s (%d): failure creating NM proxy",
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__func__, __LINE__);
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return 1;
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}
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state = nm_client_get_state(client);
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if (state != NM_STATE_CONNECTED) {
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logMessage(ERROR, "%s (%d): no active network devices",
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__func__, __LINE__);
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g_object_unref(client);
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return 1;
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}
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devices = nm_client_get_devices(client);
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for (i = 0; i < devices->len; i++) {
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NMDevice *candidate = g_ptr_array_index(devices, i);
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const char *devname = nm_device_get_iface(candidate);
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NMDHCP4Config *dhcp = NULL;
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const char *server_name = NULL;
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const char *filename = NULL;
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struct in_addr addr;
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char nextserver[INET_ADDRSTRLEN+1];
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if (nm_device_get_state(candidate) != NM_DEVICE_STATE_ACTIVATED)
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continue;
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if (strcmp(iface.device, devname))
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continue;
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dhcp = nm_device_get_dhcp4_config(candidate);
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if (!dhcp) {
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logMessage(ERROR, "no boot options received by DHCP");
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continue;
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}
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server_name = nm_dhcp4_config_get_one_option(dhcp, "server_name");
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if (!server_name) {
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logMessage(ERROR, "no bootserver was found");
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g_object_unref(client);
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return 1;
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}
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/* 'server_name' may be a hostname or an IPv4 address */
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memset(&nextserver, '\0', sizeof(nextserver));
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if (inet_pton(AF_INET, server_name, &addr) >= 1) {
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strcpy(nextserver, server_name);
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} else {
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struct hostent *he = gethostbyname(server_name);
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if (he != NULL) {
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if (inet_ntop(AF_INET, he->h_addr_list[0],
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nextserver, INET_ADDRSTRLEN) == NULL) {
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memset(&nextserver, '\0', sizeof(nextserver));
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}
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}
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}
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filename = nm_dhcp4_config_get_one_option(dhcp, "filename");
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if (filename == NULL) {
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checked_asprintf(&url, "%s:/kickstart/", nextserver);
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logMessage(ERROR, "bootp: no bootfile received");
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} else {
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checked_asprintf(&url, "%s:%s", nextserver, filename);
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logMessage(INFO, "bootp: bootfile is %s", filename);
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}
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break;
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}
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g_object_unref(client);
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}
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/* get the IP of the target system */
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if ((ip = iface_ip2str(loaderData->netDev, AF_INET)) == NULL) {
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logMessage(ERROR, "iface_ip2str returned NULL");
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return 1;
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}
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logMessage(INFO, "url is %s", url);
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parseNfsHostPathOpts(url, &host, &path, &opts);
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addDefaultKickstartFile(&path, ip);
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/* nfs has to be a little bit different... split off the last part as
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* the file and then concatenate host + dir path */
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file = strrchr(path, '/');
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if (!file) {
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file = path;
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} else {
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*file++ ='\0';
|
|
chk = host + strlen(host)-1;
|
|
|
|
if (*chk == '/' || *path == '/') {
|
|
checked_asprintf(&host, "%s:%s", host, path);
|
|
} else {
|
|
checked_asprintf(&host, "%s:/%s", host, path);
|
|
}
|
|
}
|
|
|
|
logMessage(INFO, "file location: nfs:%s/%s", host, file);
|
|
|
|
if (!doPwMount(host, "/tmp/mnt", "nfs", opts, NULL)) {
|
|
char * buf;
|
|
|
|
checked_asprintf(&buf, "/tmp/mnt/%s", file);
|
|
|
|
if (copyFile(buf, dest)) {
|
|
logMessage(ERROR, "failed to copy file to %s", dest);
|
|
failed = 1;
|
|
}
|
|
|
|
free(buf);
|
|
} else {
|
|
logMessage(ERROR, "failed to mount nfs source");
|
|
failed = 1;
|
|
}
|
|
|
|
free(host);
|
|
free(path);
|
|
if (ip) free(ip);
|
|
|
|
umount("/tmp/mnt");
|
|
unlink("/tmp/mnt");
|
|
|
|
return failed;
|
|
}
|
|
|
|
int kickstartFromNfs(char * url, struct loaderData_s * loaderData) {
|
|
return getFileFromNfs(url, "/tmp/ks.cfg", loaderData);
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4: */
|