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When running libvirtd from a build directory on a system with unmodified libtool, libvirtd's binary is not renamed as "lt-libvirtd". Check for "/daemon/.libs/libvirtd" in addition to "lt-libvirtd".
1356 lines
40 KiB
C
1356 lines
40 KiB
C
/*
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* libvirtd.c: daemon start of day, guest process & i/o management
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*
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* Copyright (C) 2006-2012 Red Hat, Inc.
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* Copyright (C) 2006 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#include <config.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <getopt.h>
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#include <stdlib.h>
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#include <grp.h>
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#include <locale.h>
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#include "libvirt_internal.h"
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#include "virterror_internal.h"
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#include "virfile.h"
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#include "virpidfile.h"
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#define VIR_FROM_THIS VIR_FROM_QEMU
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#include "libvirtd.h"
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#include "libvirtd-config.h"
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#include "util.h"
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#include "uuid.h"
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#include "remote_driver.h"
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#include "memory.h"
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#include "conf.h"
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#include "virnetlink.h"
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#include "virnetserver.h"
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#include "threads.h"
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#include "remote.h"
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#include "remote_driver.h"
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#include "hooks.h"
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#include "uuid.h"
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#include "viraudit.h"
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#ifdef WITH_DRIVER_MODULES
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# include "driver.h"
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#else
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# ifdef WITH_QEMU
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# include "qemu/qemu_driver.h"
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# endif
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# ifdef WITH_LXC
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# include "lxc/lxc_driver.h"
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# endif
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# ifdef WITH_LIBXL
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# include "libxl/libxl_driver.h"
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# endif
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# ifdef WITH_UML
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# include "uml/uml_driver.h"
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# endif
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# ifdef WITH_NETWORK
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# include "network/bridge_driver.h"
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# endif
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# ifdef WITH_NETCF
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# include "interface/netcf_driver.h"
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# endif
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# ifdef WITH_STORAGE
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# include "storage/storage_driver.h"
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# endif
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# ifdef WITH_NODE_DEVICES
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# include "node_device/node_device_driver.h"
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# endif
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# ifdef WITH_SECRETS
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# include "secret/secret_driver.h"
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# endif
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# ifdef WITH_NWFILTER
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# include "nwfilter/nwfilter_driver.h"
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# endif
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#endif
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#include "configmake.h"
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#if HAVE_SASL
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virNetSASLContextPtr saslCtxt = NULL;
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#endif
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virNetServerProgramPtr remoteProgram = NULL;
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virNetServerProgramPtr qemuProgram = NULL;
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enum {
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VIR_DAEMON_ERR_NONE = 0,
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VIR_DAEMON_ERR_PIDFILE,
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VIR_DAEMON_ERR_RUNDIR,
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VIR_DAEMON_ERR_INIT,
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VIR_DAEMON_ERR_SIGNAL,
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VIR_DAEMON_ERR_PRIVS,
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VIR_DAEMON_ERR_NETWORK,
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VIR_DAEMON_ERR_CONFIG,
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VIR_DAEMON_ERR_HOOKS,
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VIR_DAEMON_ERR_AUDIT,
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VIR_DAEMON_ERR_LAST
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};
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VIR_ENUM_DECL(virDaemonErr)
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VIR_ENUM_IMPL(virDaemonErr, VIR_DAEMON_ERR_LAST,
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"Initialization successful",
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"Unable to obtain pidfile",
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"Unable to create rundir",
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"Unable to initialize libvirt",
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"Unable to setup signal handlers",
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"Unable to drop privileges",
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"Unable to initialize network sockets",
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"Unable to load configuration file",
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"Unable to look for hook scripts",
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"Unable to initialize audit system")
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static int daemonForkIntoBackground(const char *argv0)
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{
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int statuspipe[2];
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if (pipe(statuspipe) < 0)
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return -1;
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pid_t pid = fork();
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switch (pid) {
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case 0:
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{
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/* intermediate child */
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int stdinfd = -1;
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int stdoutfd = -1;
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int nextpid;
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VIR_FORCE_CLOSE(statuspipe[0]);
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if ((stdinfd = open("/dev/null", O_RDONLY)) < 0)
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goto cleanup;
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if ((stdoutfd = open("/dev/null", O_WRONLY)) < 0)
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goto cleanup;
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if (dup2(stdinfd, STDIN_FILENO) != STDIN_FILENO)
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goto cleanup;
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if (dup2(stdoutfd, STDOUT_FILENO) != STDOUT_FILENO)
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goto cleanup;
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if (dup2(stdoutfd, STDERR_FILENO) != STDERR_FILENO)
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goto cleanup;
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if (stdinfd > STDERR_FILENO && VIR_CLOSE(stdinfd) < 0)
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goto cleanup;
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if (stdoutfd > STDERR_FILENO && VIR_CLOSE(stdoutfd) < 0)
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goto cleanup;
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if (setsid() < 0)
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goto cleanup;
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nextpid = fork();
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switch (nextpid) {
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case 0: /* grandchild */
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return statuspipe[1];
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case -1: /* error */
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goto cleanup;
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default: /* intermediate child succeeded */
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_exit(EXIT_SUCCESS);
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}
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cleanup:
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VIR_FORCE_CLOSE(stdoutfd);
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VIR_FORCE_CLOSE(stdinfd);
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VIR_FORCE_CLOSE(statuspipe[1]);
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_exit(EXIT_FAILURE);
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}
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case -1: /* error in parent */
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goto error;
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default:
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{
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/* parent */
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int ret;
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char status;
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VIR_FORCE_CLOSE(statuspipe[1]);
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/* We wait to make sure the first child forked successfully */
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if (virPidWait(pid, NULL) < 0)
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goto error;
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/* If we get here, then the grandchild was spawned, so we
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* must exit. Block until the second child initializes
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* successfully */
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again:
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ret = read(statuspipe[0], &status, 1);
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if (ret == -1 && errno == EINTR)
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goto again;
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VIR_FORCE_CLOSE(statuspipe[0]);
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if (ret != 1) {
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char ebuf[1024];
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fprintf(stderr,
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_("%s: error: unable to determine if daemon is "
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"running: %s\n"), argv0,
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virStrerror(errno, ebuf, sizeof(ebuf)));
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exit(EXIT_FAILURE);
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} else if (status != 0) {
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fprintf(stderr,
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_("%s: error: %s. Check /var/log/messages or run "
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"without --daemon for more info.\n"), argv0,
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virDaemonErrTypeToString(status));
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exit(EXIT_FAILURE);
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}
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_exit(EXIT_SUCCESS);
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}
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}
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error:
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VIR_FORCE_CLOSE(statuspipe[0]);
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VIR_FORCE_CLOSE(statuspipe[1]);
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return -1;
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}
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static int
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daemonPidFilePath(bool privileged,
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char **pidfile)
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{
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if (privileged) {
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if (!(*pidfile = strdup(LOCALSTATEDIR "/run/libvirtd.pid")))
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goto no_memory;
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} else {
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char *rundir = NULL;
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mode_t old_umask;
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if (!(rundir = virGetUserRuntimeDirectory()))
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goto error;
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old_umask = umask(077);
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if (virFileMakePath(rundir) < 0) {
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umask(old_umask);
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goto error;
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}
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umask(old_umask);
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if (virAsprintf(pidfile, "%s/libvirtd.pid", rundir) < 0) {
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VIR_FREE(rundir);
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goto no_memory;
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}
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VIR_FREE(rundir);
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}
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return 0;
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no_memory:
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virReportOOMError();
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error:
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return -1;
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}
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static int
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daemonUnixSocketPaths(struct daemonConfig *config,
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bool privileged,
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char **sockfile,
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char **rosockfile)
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{
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if (config->unix_sock_dir) {
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if (virAsprintf(sockfile, "%s/libvirt-sock", config->unix_sock_dir) < 0)
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goto no_memory;
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if (privileged &&
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virAsprintf(rosockfile, "%s/libvirt-sock-ro", config->unix_sock_dir) < 0)
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goto no_memory;
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} else {
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if (privileged) {
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if (!(*sockfile = strdup(LOCALSTATEDIR "/run/libvirt/libvirt-sock")))
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goto no_memory;
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if (!(*rosockfile = strdup(LOCALSTATEDIR "/run/libvirt/libvirt-sock-ro")))
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goto no_memory;
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} else {
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char *rundir = NULL;
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mode_t old_umask;
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if (!(rundir = virGetUserRuntimeDirectory()))
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goto error;
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old_umask = umask(077);
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if (virFileMakePath(rundir) < 0) {
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umask(old_umask);
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goto error;
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}
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umask(old_umask);
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if (virAsprintf(sockfile, "%s/libvirt-sock", rundir) < 0) {
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VIR_FREE(rundir);
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goto no_memory;
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}
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VIR_FREE(rundir);
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}
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}
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return 0;
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no_memory:
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virReportOOMError();
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error:
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return -1;
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}
|
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|
|
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static void daemonErrorHandler(void *opaque ATTRIBUTE_UNUSED,
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virErrorPtr err ATTRIBUTE_UNUSED)
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{
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/* Don't do anything, since logging infrastructure already
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* took care of reporting the error */
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}
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static int daemonErrorLogFilter(virErrorPtr err, int priority)
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{
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/* These error codes don't really reflect real errors. They
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* are expected events that occur when an app tries to check
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* whether a particular guest already exists. This filters
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* them to a lower log level to prevent pollution of syslog
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*/
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switch (err->code) {
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case VIR_ERR_NO_DOMAIN:
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case VIR_ERR_NO_NETWORK:
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case VIR_ERR_NO_STORAGE_POOL:
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case VIR_ERR_NO_STORAGE_VOL:
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case VIR_ERR_NO_NODE_DEVICE:
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case VIR_ERR_NO_INTERFACE:
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case VIR_ERR_NO_NWFILTER:
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case VIR_ERR_NO_SECRET:
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case VIR_ERR_NO_DOMAIN_SNAPSHOT:
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case VIR_ERR_OPERATION_INVALID:
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return VIR_LOG_DEBUG;
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}
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|
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return priority;
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}
|
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|
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static void daemonInitialize(void)
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{
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/*
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* Note that the order is important: the first ones have a higher
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* priority when calling virStateInitialize. We must register
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* the network, storage and nodedev drivers before any domain
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* drivers, since their resources must be auto-started before
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* any domains can be auto-started.
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|
*/
|
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#ifdef WITH_DRIVER_MODULES
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/* We don't care if any of these fail, because the whole point
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* is to allow users to only install modules they want to use.
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* If they try to open a connection for a module that
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* is not loaded they'll get a suitable error at that point
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*/
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# ifdef WITH_NETWORK
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virDriverLoadModule("network");
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# endif
|
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# ifdef WITH_STORAGE
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virDriverLoadModule("storage");
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# endif
|
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# ifdef WITH_NODE_DEVICES
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virDriverLoadModule("nodedev");
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# endif
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|
# ifdef WITH_SECRETS
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virDriverLoadModule("secret");
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|
# endif
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# ifdef WITH_NWFILTER
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virDriverLoadModule("nwfilter");
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|
# endif
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# ifdef WITH_NETCF
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virDriverLoadModule("interface");
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|
# endif
|
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# ifdef WITH_QEMU
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|
virDriverLoadModule("qemu");
|
|
# endif
|
|
# ifdef WITH_LXC
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|
virDriverLoadModule("lxc");
|
|
# endif
|
|
# ifdef WITH_UML
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|
virDriverLoadModule("uml");
|
|
# endif
|
|
# ifdef WITH_XEN
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|
virDriverLoadModule("xen");
|
|
# endif
|
|
# ifdef WITH_LIBXL
|
|
virDriverLoadModule("libxl");
|
|
# endif
|
|
#else
|
|
# ifdef WITH_NETWORK
|
|
networkRegister();
|
|
# endif
|
|
# ifdef WITH_NETCF
|
|
interfaceRegister();
|
|
# endif
|
|
# ifdef WITH_STORAGE
|
|
storageRegister();
|
|
# endif
|
|
# ifdef WITH_NODE_DEVICES
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|
nodedevRegister();
|
|
# endif
|
|
# ifdef WITH_SECRETS
|
|
secretRegister();
|
|
# endif
|
|
# ifdef WITH_NWFILTER
|
|
nwfilterRegister();
|
|
# endif
|
|
# ifdef WITH_LIBXL
|
|
libxlRegister();
|
|
# endif
|
|
# ifdef WITH_QEMU
|
|
qemuRegister();
|
|
# endif
|
|
# ifdef WITH_LXC
|
|
lxcRegister();
|
|
# endif
|
|
# ifdef WITH_UML
|
|
umlRegister();
|
|
# endif
|
|
#endif
|
|
}
|
|
|
|
|
|
static int daemonSetupNetworking(virNetServerPtr srv,
|
|
struct daemonConfig *config,
|
|
const char *sock_path,
|
|
const char *sock_path_ro,
|
|
bool ipsock,
|
|
bool privileged)
|
|
{
|
|
virNetServerServicePtr svc = NULL;
|
|
virNetServerServicePtr svcRO = NULL;
|
|
virNetServerServicePtr svcTCP = NULL;
|
|
virNetServerServicePtr svcTLS = NULL;
|
|
gid_t unix_sock_gid = 0;
|
|
int unix_sock_ro_mask = 0;
|
|
int unix_sock_rw_mask = 0;
|
|
|
|
if (config->unix_sock_group) {
|
|
if (virGetGroupID(config->unix_sock_group, &unix_sock_gid) < 0)
|
|
return -1;
|
|
}
|
|
|
|
if (virStrToLong_i(config->unix_sock_ro_perms, NULL, 8, &unix_sock_ro_mask) != 0) {
|
|
VIR_ERROR(_("Failed to parse mode '%s'"), config->unix_sock_ro_perms);
|
|
goto error;
|
|
}
|
|
|
|
if (virStrToLong_i(config->unix_sock_rw_perms, NULL, 8, &unix_sock_rw_mask) != 0) {
|
|
VIR_ERROR(_("Failed to parse mode '%s'"), config->unix_sock_rw_perms);
|
|
goto error;
|
|
}
|
|
|
|
VIR_DEBUG("Registering unix socket %s", sock_path);
|
|
if (!(svc = virNetServerServiceNewUNIX(sock_path,
|
|
unix_sock_rw_mask,
|
|
unix_sock_gid,
|
|
config->auth_unix_rw,
|
|
false,
|
|
config->max_client_requests,
|
|
NULL)))
|
|
goto error;
|
|
if (sock_path_ro) {
|
|
VIR_DEBUG("Registering unix socket %s", sock_path_ro);
|
|
if (!(svcRO = virNetServerServiceNewUNIX(sock_path_ro,
|
|
unix_sock_ro_mask,
|
|
unix_sock_gid,
|
|
config->auth_unix_ro,
|
|
true,
|
|
config->max_client_requests,
|
|
NULL)))
|
|
goto error;
|
|
}
|
|
|
|
if (virNetServerAddService(srv, svc,
|
|
config->mdns_adv && !ipsock ?
|
|
"_libvirt._tcp" :
|
|
NULL) < 0)
|
|
goto error;
|
|
|
|
if (svcRO &&
|
|
virNetServerAddService(srv, svcRO, NULL) < 0)
|
|
goto error;
|
|
|
|
if (ipsock) {
|
|
if (config->listen_tcp) {
|
|
VIR_DEBUG("Registering TCP socket %s:%s",
|
|
config->listen_addr, config->tcp_port);
|
|
if (!(svcTCP = virNetServerServiceNewTCP(config->listen_addr,
|
|
config->tcp_port,
|
|
config->auth_tcp,
|
|
false,
|
|
config->max_client_requests,
|
|
NULL)))
|
|
goto error;
|
|
|
|
if (virNetServerAddService(srv, svcTCP,
|
|
config->mdns_adv ? "_libvirt._tcp" : NULL) < 0)
|
|
goto error;
|
|
}
|
|
|
|
if (config->listen_tls) {
|
|
virNetTLSContextPtr ctxt = NULL;
|
|
|
|
if (config->ca_file ||
|
|
config->cert_file ||
|
|
config->key_file) {
|
|
if (!(ctxt = virNetTLSContextNewServer(config->ca_file,
|
|
config->crl_file,
|
|
config->cert_file,
|
|
config->key_file,
|
|
(const char *const*)config->tls_allowed_dn_list,
|
|
config->tls_no_sanity_certificate ? false : true,
|
|
config->tls_no_verify_certificate ? false : true)))
|
|
goto error;
|
|
} else {
|
|
if (!(ctxt = virNetTLSContextNewServerPath(NULL,
|
|
!privileged,
|
|
(const char *const*)config->tls_allowed_dn_list,
|
|
config->tls_no_sanity_certificate ? false : true,
|
|
config->tls_no_verify_certificate ? false : true)))
|
|
goto error;
|
|
}
|
|
|
|
VIR_DEBUG("Registering TLS socket %s:%s",
|
|
config->listen_addr, config->tls_port);
|
|
if (!(svcTLS =
|
|
virNetServerServiceNewTCP(config->listen_addr,
|
|
config->tls_port,
|
|
config->auth_tls,
|
|
false,
|
|
config->max_client_requests,
|
|
ctxt))) {
|
|
virNetTLSContextFree(ctxt);
|
|
goto error;
|
|
}
|
|
if (virNetServerAddService(srv, svcTLS,
|
|
config->mdns_adv &&
|
|
!config->listen_tcp ? "_libvirt._tcp" : NULL) < 0)
|
|
goto error;
|
|
|
|
virNetTLSContextFree(ctxt);
|
|
}
|
|
}
|
|
|
|
#if HAVE_SASL
|
|
if (config->auth_unix_rw == REMOTE_AUTH_SASL ||
|
|
config->auth_unix_ro == REMOTE_AUTH_SASL ||
|
|
config->auth_tcp == REMOTE_AUTH_SASL ||
|
|
config->auth_tls == REMOTE_AUTH_SASL) {
|
|
saslCtxt = virNetSASLContextNewServer(
|
|
(const char *const*)config->sasl_allowed_username_list);
|
|
if (!saslCtxt)
|
|
goto error;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
error:
|
|
virNetServerServiceFree(svcTLS);
|
|
virNetServerServiceFree(svcTCP);
|
|
virNetServerServiceFree(svc);
|
|
virNetServerServiceFree(svcRO);
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int daemonShutdownCheck(virNetServerPtr srv ATTRIBUTE_UNUSED,
|
|
void *opaque ATTRIBUTE_UNUSED)
|
|
{
|
|
if (virStateActive())
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* Set up the logging environment
|
|
* By default if daemonized all errors go to the logfile libvirtd.log,
|
|
* but if verbose or error debugging is asked for then also output
|
|
* informational and debug messages. Default size if 64 kB.
|
|
*/
|
|
static int
|
|
daemonSetupLogging(struct daemonConfig *config,
|
|
bool privileged,
|
|
bool verbose,
|
|
bool godaemon)
|
|
{
|
|
virLogReset();
|
|
|
|
/*
|
|
* Libvirtd's order of precedence is:
|
|
* cmdline > environment > config
|
|
*
|
|
* In order to achieve this, we must process configuration in
|
|
* different order for the log level versus the filters and
|
|
* outputs. Because filters and outputs append, we have to look at
|
|
* the environment first and then only check the config file if
|
|
* there was no result from the environment. The default output is
|
|
* then applied only if there was no setting from either of the
|
|
* first two. Because we don't have a way to determine if the log
|
|
* level has been set, we must process variables in the opposite
|
|
* order, each one overriding the previous.
|
|
*/
|
|
if (config->log_level != 0)
|
|
virLogSetDefaultPriority(config->log_level);
|
|
|
|
virLogSetFromEnv();
|
|
|
|
virLogSetBufferSize(config->log_buffer_size);
|
|
|
|
if (virLogGetNbFilters() == 0)
|
|
virLogParseFilters(config->log_filters);
|
|
|
|
if (virLogGetNbOutputs() == 0)
|
|
virLogParseOutputs(config->log_outputs);
|
|
|
|
/*
|
|
* If no defined outputs, then direct to libvirtd.log when running
|
|
* as daemon. Otherwise the default output is stderr.
|
|
*/
|
|
if (virLogGetNbOutputs() == 0) {
|
|
char *tmp = NULL;
|
|
|
|
if (godaemon) {
|
|
if (privileged) {
|
|
if (virAsprintf(&tmp, "%d:file:%s/log/libvirt/libvirtd.log",
|
|
virLogGetDefaultPriority(),
|
|
LOCALSTATEDIR) == -1)
|
|
goto no_memory;
|
|
} else {
|
|
char *logdir = virGetUserCacheDirectory();
|
|
mode_t old_umask;
|
|
|
|
if (!logdir)
|
|
goto error;
|
|
|
|
old_umask = umask(077);
|
|
if (virFileMakePath(logdir) < 0) {
|
|
umask(old_umask);
|
|
goto error;
|
|
}
|
|
umask(old_umask);
|
|
|
|
if (virAsprintf(&tmp, "%d:file:%s/libvirtd.log",
|
|
virLogGetDefaultPriority(), logdir) == -1) {
|
|
VIR_FREE(logdir);
|
|
goto no_memory;
|
|
}
|
|
VIR_FREE(logdir);
|
|
}
|
|
} else {
|
|
if (virAsprintf(&tmp, "%d:stderr", virLogGetDefaultPriority()) < 0)
|
|
goto no_memory;
|
|
}
|
|
virLogParseOutputs(tmp);
|
|
VIR_FREE(tmp);
|
|
}
|
|
|
|
/*
|
|
* Command line override for --verbose
|
|
*/
|
|
if ((verbose) && (virLogGetDefaultPriority() > VIR_LOG_INFO))
|
|
virLogSetDefaultPriority(VIR_LOG_INFO);
|
|
|
|
return 0;
|
|
|
|
no_memory:
|
|
virReportOOMError();
|
|
error:
|
|
return -1;
|
|
}
|
|
|
|
|
|
/* Display version information. */
|
|
static void
|
|
daemonVersion(const char *argv0)
|
|
{
|
|
printf ("%s (%s) %s\n", argv0, PACKAGE_NAME, PACKAGE_VERSION);
|
|
}
|
|
|
|
#ifdef __sun
|
|
static int
|
|
daemonSetupPrivs(void)
|
|
{
|
|
chown ("/var/run/libvirt", SYSTEM_UID, SYSTEM_UID);
|
|
|
|
if (__init_daemon_priv (PU_RESETGROUPS | PU_CLEARLIMITSET,
|
|
SYSTEM_UID, SYSTEM_UID, PRIV_XVM_CONTROL, NULL)) {
|
|
VIR_ERROR(_("additional privileges are required"));
|
|
return -1;
|
|
}
|
|
|
|
if (priv_set (PRIV_OFF, PRIV_ALLSETS, PRIV_FILE_LINK_ANY, PRIV_PROC_INFO,
|
|
PRIV_PROC_SESSION, PRIV_PROC_EXEC, PRIV_PROC_FORK, NULL)) {
|
|
VIR_ERROR(_("failed to set reduced privileges"));
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
# define daemonSetupPrivs() 0
|
|
#endif
|
|
|
|
|
|
static void daemonShutdownHandler(virNetServerPtr srv,
|
|
siginfo_t *sig ATTRIBUTE_UNUSED,
|
|
void *opaque ATTRIBUTE_UNUSED)
|
|
{
|
|
virNetServerQuit(srv);
|
|
}
|
|
|
|
static void daemonReloadHandler(virNetServerPtr srv ATTRIBUTE_UNUSED,
|
|
siginfo_t *sig ATTRIBUTE_UNUSED,
|
|
void *opaque ATTRIBUTE_UNUSED)
|
|
{
|
|
VIR_INFO("Reloading configuration on SIGHUP");
|
|
virHookCall(VIR_HOOK_DRIVER_DAEMON, "-",
|
|
VIR_HOOK_DAEMON_OP_RELOAD, SIGHUP, "SIGHUP", NULL, NULL);
|
|
if (virStateReload() < 0)
|
|
VIR_WARN("Error while reloading drivers");
|
|
}
|
|
|
|
static int daemonSetupSignals(virNetServerPtr srv)
|
|
{
|
|
if (virNetServerAddSignalHandler(srv, SIGINT, daemonShutdownHandler, NULL) < 0)
|
|
return -1;
|
|
if (virNetServerAddSignalHandler(srv, SIGQUIT, daemonShutdownHandler, NULL) < 0)
|
|
return -1;
|
|
if (virNetServerAddSignalHandler(srv, SIGTERM, daemonShutdownHandler, NULL) < 0)
|
|
return -1;
|
|
if (virNetServerAddSignalHandler(srv, SIGHUP, daemonReloadHandler, NULL) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static void daemonRunStateInit(void *opaque)
|
|
{
|
|
virNetServerPtr srv = opaque;
|
|
|
|
/* Start the stateful HV drivers
|
|
* This is deliberately done after telling the parent process
|
|
* we're ready, since it can take a long time and this will
|
|
* seriously delay OS bootup process */
|
|
if (virStateInitialize(virNetServerIsPrivileged(srv)) < 0) {
|
|
VIR_ERROR(_("Driver state initialization failed"));
|
|
/* Ensure the main event loop quits */
|
|
kill(getpid(), SIGTERM);
|
|
virNetServerFree(srv);
|
|
return;
|
|
}
|
|
|
|
/* Only now accept clients from network */
|
|
virNetServerUpdateServices(srv, true);
|
|
virNetServerFree(srv);
|
|
}
|
|
|
|
static int daemonStateInit(virNetServerPtr srv)
|
|
{
|
|
virThread thr;
|
|
virNetServerRef(srv);
|
|
if (virThreadCreate(&thr, false, daemonRunStateInit, srv) < 0) {
|
|
virNetServerFree(srv);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int migrateProfile(void)
|
|
{
|
|
char *old_base = NULL;
|
|
char *updated = NULL;
|
|
char *home = NULL;
|
|
char *xdg_dir = NULL;
|
|
char *config_dir = NULL;
|
|
const char *config_home;
|
|
int ret = -1;
|
|
mode_t old_umask;
|
|
|
|
VIR_DEBUG("Checking if user profile needs migrating");
|
|
|
|
if (!(home = virGetUserDirectory()))
|
|
goto cleanup;
|
|
|
|
if (virAsprintf(&old_base, "%s/.libvirt", home) < 0) {
|
|
goto cleanup;
|
|
}
|
|
|
|
/* if the new directory is there or the old one is not: do nothing */
|
|
if (!(config_dir = virGetUserConfigDirectory()))
|
|
goto cleanup;
|
|
|
|
if (!virFileIsDir(old_base) || virFileExists(config_dir)) {
|
|
VIR_DEBUG("No old profile in '%s' / "
|
|
"new profile directory already present '%s'",
|
|
old_base, config_dir);
|
|
ret = 0;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* test if we already attempted to migrate first */
|
|
if (virAsprintf(&updated, "%s/DEPRECATED-DIRECTORY", old_base) < 0) {
|
|
goto cleanup;
|
|
}
|
|
if (virFileExists(updated)) {
|
|
goto cleanup;
|
|
}
|
|
|
|
config_home = getenv("XDG_CONFIG_HOME");
|
|
if (config_home && config_home[0] != '\0') {
|
|
xdg_dir = strdup(config_home);
|
|
} else {
|
|
if (virAsprintf(&xdg_dir, "%s/.config", home) < 0) {
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
old_umask = umask(077);
|
|
if (virFileMakePath(xdg_dir) < 0) {
|
|
umask(old_umask);
|
|
goto cleanup;
|
|
}
|
|
umask(old_umask);
|
|
|
|
if (rename(old_base, config_dir) < 0) {
|
|
int fd = creat(updated, 0600);
|
|
VIR_FORCE_CLOSE(fd);
|
|
VIR_ERROR(_("Unable to migrate %s to %s"), old_base, config_dir);
|
|
goto cleanup;
|
|
}
|
|
|
|
VIR_DEBUG("Profile migrated from %s to %s", old_base, config_dir);
|
|
ret = 0;
|
|
|
|
cleanup:
|
|
VIR_FREE(home);
|
|
VIR_FREE(old_base);
|
|
VIR_FREE(xdg_dir);
|
|
VIR_FREE(config_dir);
|
|
VIR_FREE(updated);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Print command-line usage. */
|
|
static void
|
|
daemonUsage(const char *argv0, bool privileged)
|
|
{
|
|
fprintf (stderr,
|
|
_("\n\
|
|
Usage:\n\
|
|
%s [options]\n\
|
|
\n\
|
|
Options:\n\
|
|
-v | --verbose Verbose messages.\n\
|
|
-d | --daemon Run as a daemon & write PID file.\n\
|
|
-l | --listen Listen for TCP/IP connections.\n\
|
|
-t | --timeout <secs> Exit after timeout period.\n\
|
|
-f | --config <file> Configuration file.\n\
|
|
| --version Display version information.\n\
|
|
-p | --pid-file <file> Change name of PID file.\n\
|
|
\n\
|
|
libvirt management daemon:\n"), argv0);
|
|
|
|
if (privileged) {
|
|
fprintf(stderr,
|
|
_("\n\
|
|
Default paths:\n\
|
|
\n\
|
|
Configuration file (unless overridden by -f):\n\
|
|
%s/libvirt/libvirtd.conf\n\
|
|
\n\
|
|
Sockets:\n\
|
|
%s/run/libvirt/libvirt-sock\n\
|
|
%s/run/libvirt/libvirt-sock-ro\n\
|
|
\n\
|
|
TLS:\n\
|
|
CA certificate: %s/pki/CA/caert.pem\n\
|
|
Server certificate: %s/pki/libvirt/servercert.pem\n\
|
|
Server private key: %s/pki/libvirt/private/serverkey.pem\n\
|
|
\n\
|
|
PID file (unless overridden by -p):\n\
|
|
%s/run/libvirtd.pid\n\
|
|
\n"),
|
|
SYSCONFDIR,
|
|
LOCALSTATEDIR,
|
|
LOCALSTATEDIR,
|
|
SYSCONFDIR,
|
|
SYSCONFDIR,
|
|
SYSCONFDIR,
|
|
LOCALSTATEDIR);
|
|
} else {
|
|
fprintf(stderr,
|
|
"%s", _("\n\
|
|
Default paths:\n\
|
|
\n\
|
|
Configuration file (unless overridden by -f):\n\
|
|
$XDG_CONFIG_HOME/libvirt/libvirtd.conf\n\
|
|
\n\
|
|
Sockets:\n\
|
|
$XDG_RUNTIME_HOME/libvirt/libvirt-sock (in UNIX abstract namespace)\n\
|
|
\n\
|
|
TLS:\n\
|
|
CA certificate: $HOME/.pki/libvirt/cacert.pem\n\
|
|
Server certificate: $HOME/.pki/libvirt/servercert.pem\n\
|
|
Server private key: $HOME/.pki/libvirt/serverkey.pem\n\
|
|
\n\
|
|
PID file:\n\
|
|
$XDG_RUNTIME_HOME/libvirt/libvirtd.pid\n\
|
|
\n"));
|
|
}
|
|
}
|
|
|
|
enum {
|
|
OPT_VERSION = 129
|
|
};
|
|
|
|
#define MAX_LISTEN 5
|
|
int main(int argc, char **argv) {
|
|
virNetServerPtr srv = NULL;
|
|
char *remote_config_file = NULL;
|
|
int statuswrite = -1;
|
|
int ret = 1;
|
|
int pid_file_fd = -1;
|
|
char *pid_file = NULL;
|
|
char *sock_file = NULL;
|
|
char *sock_file_ro = NULL;
|
|
int timeout = -1; /* -t: Shutdown timeout */
|
|
int verbose = 0;
|
|
int godaemon = 0;
|
|
int ipsock = 0;
|
|
struct daemonConfig *config;
|
|
bool privileged = geteuid() == 0 ? true : false;
|
|
bool implicit_conf = false;
|
|
char *run_dir = NULL;
|
|
mode_t old_umask;
|
|
|
|
struct option opts[] = {
|
|
{ "verbose", no_argument, &verbose, 1},
|
|
{ "daemon", no_argument, &godaemon, 1},
|
|
{ "listen", no_argument, &ipsock, 1},
|
|
{ "config", required_argument, NULL, 'f'},
|
|
{ "timeout", required_argument, NULL, 't'},
|
|
{ "pid-file", required_argument, NULL, 'p'},
|
|
{ "version", no_argument, NULL, OPT_VERSION },
|
|
{ "help", no_argument, NULL, '?' },
|
|
{0, 0, 0, 0}
|
|
};
|
|
|
|
if (setlocale (LC_ALL, "") == NULL ||
|
|
bindtextdomain (PACKAGE, LOCALEDIR) == NULL ||
|
|
textdomain(PACKAGE) == NULL ||
|
|
virInitialize() < 0) {
|
|
fprintf(stderr, _("%s: initialization failed\n"), argv[0]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/* initialize early logging */
|
|
virLogSetFromEnv();
|
|
|
|
#ifdef WITH_DRIVER_MODULES
|
|
if (strstr(argv[0], "lt-libvirtd") ||
|
|
strstr(argv[0], "/daemon/.libs/libvirtd")) {
|
|
char *tmp = strrchr(argv[0], '/');
|
|
if (!tmp) {
|
|
fprintf(stderr, _("%s: cannot identify driver directory\n"), argv[0]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
*tmp = '\0';
|
|
char *driverdir;
|
|
if (virAsprintf(&driverdir, "%s/../../src/.libs", argv[0]) < 0) {
|
|
fprintf(stderr, _("%s: initialization failed\n"), argv[0]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
if (access(driverdir, R_OK) < 0) {
|
|
fprintf(stderr, _("%s: expected driver directory '%s' is missing\n"),
|
|
argv[0], driverdir);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
virDriverModuleInitialize(driverdir);
|
|
*tmp = '/';
|
|
/* Must not free 'driverdir' - it is still used */
|
|
}
|
|
#endif
|
|
|
|
while (1) {
|
|
int optidx = 0;
|
|
int c;
|
|
char *tmp;
|
|
|
|
c = getopt_long(argc, argv, "ldf:p:t:v", opts, &optidx);
|
|
|
|
if (c == -1) {
|
|
break;
|
|
}
|
|
|
|
switch (c) {
|
|
case 0:
|
|
/* Got one of the flags */
|
|
break;
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
case 'd':
|
|
godaemon = 1;
|
|
break;
|
|
case 'l':
|
|
ipsock = 1;
|
|
break;
|
|
|
|
case 't':
|
|
if (virStrToLong_i(optarg, &tmp, 10, &timeout) != 0
|
|
|| timeout <= 0
|
|
/* Ensure that we can multiply by 1000 without overflowing. */
|
|
|| timeout > INT_MAX / 1000) {
|
|
VIR_ERROR(_("Invalid value for timeout"));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
break;
|
|
|
|
case 'p':
|
|
VIR_FREE(pid_file);
|
|
if (!(pid_file = strdup(optarg))) {
|
|
VIR_ERROR(_("Can't allocate memory"));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
break;
|
|
|
|
case 'f':
|
|
VIR_FREE(remote_config_file);
|
|
if (!(remote_config_file = strdup(optarg))) {
|
|
VIR_ERROR(_("Can't allocate memory"));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
break;
|
|
|
|
case OPT_VERSION:
|
|
daemonVersion(argv[0]);
|
|
return 0;
|
|
|
|
case '?':
|
|
daemonUsage(argv[0], privileged);
|
|
return 2;
|
|
|
|
default:
|
|
VIR_ERROR(_("%s: internal error: unknown flag: %c"),
|
|
argv[0], c);
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
if (optind != argc) {
|
|
fprintf(stderr, "%s: unexpected, non-option, command line arguments\n",
|
|
argv[0]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (!(config = daemonConfigNew(privileged))) {
|
|
VIR_ERROR(_("Can't create initial configuration"));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/* No explicit config, so try and find a default one */
|
|
if (remote_config_file == NULL) {
|
|
implicit_conf = true;
|
|
if (daemonConfigFilePath(privileged,
|
|
&remote_config_file) < 0) {
|
|
VIR_ERROR(_("Can't determine config path"));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
/* Read the config file if it exists*/
|
|
if (remote_config_file &&
|
|
daemonConfigLoadFile(config, remote_config_file, implicit_conf) < 0) {
|
|
virErrorPtr err = virGetLastError();
|
|
if (err && err->message)
|
|
VIR_ERROR(_("Can't load config file: %s: %s"),
|
|
err->message, remote_config_file);
|
|
else
|
|
VIR_ERROR(_("Can't load config file: %s"), remote_config_file);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (!privileged &&
|
|
migrateProfile() < 0) {
|
|
VIR_ERROR(_("Exiting due to failure to migrate profile"));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (config->host_uuid &&
|
|
virSetHostUUIDStr(config->host_uuid) < 0) {
|
|
VIR_ERROR(_("invalid host UUID: %s"), config->host_uuid);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (daemonSetupLogging(config, privileged, verbose, godaemon) < 0) {
|
|
VIR_ERROR(_("Can't initialize logging"));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (!pid_file &&
|
|
daemonPidFilePath(privileged,
|
|
&pid_file) < 0) {
|
|
VIR_ERROR(_("Can't determine pid file path."));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
VIR_DEBUG("Decided on pid file path '%s'", NULLSTR(pid_file));
|
|
|
|
if (daemonUnixSocketPaths(config,
|
|
privileged,
|
|
&sock_file,
|
|
&sock_file_ro) < 0) {
|
|
VIR_ERROR(_("Can't determine socket paths"));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
VIR_DEBUG("Decided on socket paths '%s' and '%s'",
|
|
sock_file, NULLSTR(sock_file_ro));
|
|
|
|
if (godaemon) {
|
|
char ebuf[1024];
|
|
|
|
if (chdir("/") < 0) {
|
|
VIR_ERROR(_("cannot change to root directory: %s"),
|
|
virStrerror(errno, ebuf, sizeof(ebuf)));
|
|
goto cleanup;
|
|
}
|
|
|
|
if ((statuswrite = daemonForkIntoBackground(argv[0])) < 0) {
|
|
VIR_ERROR(_("Failed to fork as daemon: %s"),
|
|
virStrerror(errno, ebuf, sizeof(ebuf)));
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
/* Ensure the rundir exists (on tmpfs on some systems) */
|
|
if (privileged) {
|
|
run_dir = strdup(LOCALSTATEDIR "/run/libvirt");
|
|
} else {
|
|
run_dir = virGetUserRuntimeDirectory();
|
|
|
|
if (!run_dir) {
|
|
VIR_ERROR(_("Can't determine user directory"));
|
|
goto cleanup;
|
|
}
|
|
}
|
|
if (!run_dir) {
|
|
virReportOOMError();
|
|
goto cleanup;
|
|
}
|
|
|
|
if (privileged)
|
|
old_umask = umask(022);
|
|
else
|
|
old_umask = umask(077);
|
|
VIR_DEBUG("Ensuring run dir '%s' exists", run_dir);
|
|
if (virFileMakePath(run_dir) < 0) {
|
|
char ebuf[1024];
|
|
VIR_ERROR(_("unable to create rundir %s: %s"), run_dir,
|
|
virStrerror(errno, ebuf, sizeof(ebuf)));
|
|
ret = VIR_DAEMON_ERR_RUNDIR;
|
|
goto cleanup;
|
|
}
|
|
umask(old_umask);
|
|
|
|
/* Try to claim the pidfile, exiting if we can't */
|
|
if ((pid_file_fd = virPidFileAcquirePath(pid_file, getpid())) < 0) {
|
|
ret = VIR_DAEMON_ERR_PIDFILE;
|
|
goto cleanup;
|
|
}
|
|
|
|
if (virNetlinkStartup() < 0) {
|
|
ret = VIR_DAEMON_ERR_INIT;
|
|
goto cleanup;
|
|
}
|
|
|
|
if (!(srv = virNetServerNew(config->min_workers,
|
|
config->max_workers,
|
|
config->prio_workers,
|
|
config->max_clients,
|
|
config->keepalive_interval,
|
|
config->keepalive_count,
|
|
!!config->keepalive_required,
|
|
config->mdns_adv ? config->mdns_name : NULL,
|
|
remoteClientInitHook,
|
|
NULL))) {
|
|
ret = VIR_DAEMON_ERR_INIT;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Beyond this point, nothing should rely on using
|
|
* getuid/geteuid() == 0, for privilege level checks.
|
|
*/
|
|
VIR_DEBUG("Dropping privileges (if required)");
|
|
if (daemonSetupPrivs() < 0) {
|
|
ret = VIR_DAEMON_ERR_PRIVS;
|
|
goto cleanup;
|
|
}
|
|
|
|
daemonInitialize();
|
|
|
|
remoteProcs[REMOTE_PROC_AUTH_LIST].needAuth = false;
|
|
remoteProcs[REMOTE_PROC_AUTH_SASL_INIT].needAuth = false;
|
|
remoteProcs[REMOTE_PROC_AUTH_SASL_STEP].needAuth = false;
|
|
remoteProcs[REMOTE_PROC_AUTH_SASL_START].needAuth = false;
|
|
remoteProcs[REMOTE_PROC_AUTH_POLKIT].needAuth = false;
|
|
if (!(remoteProgram = virNetServerProgramNew(REMOTE_PROGRAM,
|
|
REMOTE_PROTOCOL_VERSION,
|
|
remoteProcs,
|
|
remoteNProcs))) {
|
|
ret = VIR_DAEMON_ERR_INIT;
|
|
goto cleanup;
|
|
}
|
|
if (virNetServerAddProgram(srv, remoteProgram) < 0) {
|
|
ret = VIR_DAEMON_ERR_INIT;
|
|
goto cleanup;
|
|
}
|
|
|
|
if (!(qemuProgram = virNetServerProgramNew(QEMU_PROGRAM,
|
|
QEMU_PROTOCOL_VERSION,
|
|
qemuProcs,
|
|
qemuNProcs))) {
|
|
ret = VIR_DAEMON_ERR_INIT;
|
|
goto cleanup;
|
|
}
|
|
if (virNetServerAddProgram(srv, qemuProgram) < 0) {
|
|
ret = VIR_DAEMON_ERR_INIT;
|
|
goto cleanup;
|
|
}
|
|
|
|
if (timeout != -1) {
|
|
VIR_DEBUG("Registering shutdown timeout %d", timeout);
|
|
virNetServerAutoShutdown(srv,
|
|
timeout,
|
|
daemonShutdownCheck,
|
|
NULL);
|
|
}
|
|
|
|
if ((daemonSetupSignals(srv)) < 0) {
|
|
ret = VIR_DAEMON_ERR_SIGNAL;
|
|
goto cleanup;
|
|
}
|
|
|
|
if (config->audit_level) {
|
|
VIR_DEBUG("Attempting to configure auditing subsystem");
|
|
if (virAuditOpen() < 0) {
|
|
if (config->audit_level > 1) {
|
|
ret = VIR_DAEMON_ERR_AUDIT;
|
|
goto cleanup;
|
|
}
|
|
VIR_DEBUG("Proceeding without auditing");
|
|
}
|
|
}
|
|
virAuditLog(config->audit_logging);
|
|
|
|
/* setup the hooks if any */
|
|
if (virHookInitialize() < 0) {
|
|
ret = VIR_DAEMON_ERR_HOOKS;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Disable error func, now logging is setup */
|
|
virSetErrorFunc(NULL, daemonErrorHandler);
|
|
virSetErrorLogPriorityFunc(daemonErrorLogFilter);
|
|
|
|
/*
|
|
* Call the daemon startup hook
|
|
* TODO: should we abort the daemon startup if the script returned
|
|
* an error ?
|
|
*/
|
|
virHookCall(VIR_HOOK_DRIVER_DAEMON, "-", VIR_HOOK_DAEMON_OP_START,
|
|
0, "start", NULL, NULL);
|
|
|
|
if (daemonSetupNetworking(srv, config,
|
|
sock_file, sock_file_ro,
|
|
ipsock, privileged) < 0) {
|
|
ret = VIR_DAEMON_ERR_NETWORK;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Tell parent of daemon that basic initialization is complete
|
|
* In particular we're ready to accept net connections & have
|
|
* written the pidfile
|
|
*/
|
|
if (statuswrite != -1) {
|
|
char status = 0;
|
|
while (write(statuswrite, &status, 1) == -1 &&
|
|
errno == EINTR)
|
|
;
|
|
VIR_FORCE_CLOSE(statuswrite);
|
|
}
|
|
|
|
/* Initialize drivers & then start accepting new clients from network */
|
|
if (daemonStateInit(srv) < 0) {
|
|
ret = VIR_DAEMON_ERR_INIT;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Register the netlink event service */
|
|
if (virNetlinkEventServiceStart() < 0) {
|
|
ret = VIR_DAEMON_ERR_NETWORK;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Run event loop. */
|
|
virNetServerRun(srv);
|
|
|
|
ret = 0;
|
|
|
|
virHookCall(VIR_HOOK_DRIVER_DAEMON, "-", VIR_HOOK_DAEMON_OP_SHUTDOWN,
|
|
0, "shutdown", NULL, NULL);
|
|
|
|
cleanup:
|
|
virNetlinkEventServiceStop();
|
|
virNetServerProgramFree(remoteProgram);
|
|
virNetServerProgramFree(qemuProgram);
|
|
virNetServerClose(srv);
|
|
virNetServerFree(srv);
|
|
virNetlinkShutdown();
|
|
if (statuswrite != -1) {
|
|
if (ret != 0) {
|
|
/* Tell parent of daemon what failed */
|
|
char status = ret;
|
|
while (write(statuswrite, &status, 1) == -1 &&
|
|
errno == EINTR)
|
|
;
|
|
}
|
|
VIR_FORCE_CLOSE(statuswrite);
|
|
}
|
|
if (pid_file_fd != -1)
|
|
virPidFileReleasePath(pid_file, pid_file_fd);
|
|
|
|
VIR_FREE(sock_file);
|
|
VIR_FREE(sock_file_ro);
|
|
VIR_FREE(pid_file);
|
|
VIR_FREE(remote_config_file);
|
|
VIR_FREE(run_dir);
|
|
|
|
daemonConfigFree(config);
|
|
|
|
return ret;
|
|
}
|