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* qemud/driver.c: maintain the autostart flag on disk using symlinks from the "autostart" directories to the corresponding config files. * qemud/internal.h: add paths to the autostart links to the vm/network structures and paths to the autostart dirs to the server struct. * qemud/qemud.c: initialize the server autostart dir patches. * qemud/conf.h: expose qemudEnsureDir() * qemud/conf.c: check the autostart symlinks when loading config files at startup.
826 lines
23 KiB
C
826 lines
23 KiB
C
/*
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* driver.c: core driver methods for managing qemu guests
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*
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* Copyright (C) 2006, 2007 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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 <sys/types.h>
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#include <sys/poll.h>
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#include <dirent.h>
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#include <limits.h>
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#include <string.h>
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#include <stdio.h>
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#include <strings.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <libvirt/virterror.h>
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#include "internal.h"
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#include "driver.h"
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#include "conf.h"
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void qemudReportError(struct qemud_server *server,
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int code, const char *fmt, ...) {
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va_list args;
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server->errorCode = code;
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if (fmt) {
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va_start(args, fmt);
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vsnprintf(server->errorMessage, QEMUD_MAX_ERROR_LEN-1, fmt, args);
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va_end(args);
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} else {
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server->errorMessage[0] = '\0';
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}
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}
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int qemudMonitorCommand(struct qemud_server *server ATTRIBUTE_UNUSED,
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struct qemud_vm *vm,
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const char *cmd,
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char **reply) {
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int size = 0;
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char *buf = NULL;
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if (write(vm->monitor, cmd, strlen(cmd)) < 0) {
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return -1;
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}
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*reply = NULL;
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for (;;) {
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struct pollfd fd = { vm->monitor, POLLIN | POLLERR | POLLHUP, 0 };
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char *tmp;
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/* Read all the data QEMU has sent thus far */
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for (;;) {
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char data[1024];
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int got = read(vm->monitor, data, sizeof(data));
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if (got < 0) {
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if (errno == EINTR)
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continue;
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if (errno == EAGAIN)
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break;
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free(buf);
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return -1;
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}
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if (!(buf = realloc(buf, size+got+1)))
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return -1;
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memmove(buf+size, data, got);
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buf[size+got] = '\0';
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size += got;
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}
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if (buf)
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qemudDebug("Mon [%s]", buf);
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/* Look for QEMU prompt to indicate completion */
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if (buf && ((tmp = strstr(buf, "\n(qemu)")) != NULL)) {
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tmp[0] = '\0';
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break;
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}
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pollagain:
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/* Need to wait for more data */
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if (poll(&fd, 1, -1) < 0) {
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if (errno == EINTR)
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goto pollagain;
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free(buf);
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return -1;
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}
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}
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*reply = buf;
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return 0;
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}
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int qemudGetMemInfo(unsigned int *memory) {
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FILE *meminfo = fopen("/proc/meminfo", "r");
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char line[1024];
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*memory = 0;
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if (!meminfo) {
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return -1;
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}
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/* XXX NUMA and hyperthreads ? */
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while (fgets(line, sizeof(line), meminfo) != NULL) {
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if (!strncmp(line, "MemTotal:", 9)) {
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*memory = (unsigned int)strtol(line + 10, NULL, 10);
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}
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}
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fclose(meminfo);
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return 0;
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}
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int qemudGetCPUInfo(unsigned int *cpus, unsigned int *mhz,
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unsigned int *nodes, unsigned int *sockets,
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unsigned int *cores, unsigned int *threads) {
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FILE *cpuinfo = fopen("/proc/cpuinfo", "r");
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char line[1024];
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*cpus = 0;
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*mhz = 0;
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*nodes = *sockets = *cores = *threads = 1;
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if (!cpuinfo) {
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return -1;
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}
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/* XXX NUMA and hyperthreads ? */
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while (fgets(line, sizeof(line), cpuinfo) != NULL) {
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if (!strncmp(line, "processor\t", 10)) { /* aka a single logical CPU */
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(*cpus)++;
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} else if (!strncmp(line, "cpu MHz\t", 8)) {
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char *offset = index(line, ':');
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if (!offset)
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continue;
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offset++;
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if (!*offset)
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continue;
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*mhz = (unsigned int)strtol(offset, NULL, 10);
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} else if (!strncmp(line, "physical id\t", 12)) { /* aka socket */
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unsigned int id;
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char *offset = index(line, ':');
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if (!offset)
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continue;
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offset++;
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if (!*offset)
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continue;
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id = (unsigned int)strtol(offset, NULL, 10);
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if ((id+1) > *sockets)
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*sockets = (id + 1);
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} else if (!strncmp(line, "cpu cores\t", 9)) { /* aka cores */
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unsigned int id;
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char *offset = index(line, ':');
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if (!offset)
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continue;
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offset++;
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if (!*offset)
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continue;
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id = (unsigned int)strtol(offset, NULL, 10);
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if (id > *cores)
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*cores = id;
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}
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}
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fclose(cpuinfo);
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return 0;
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}
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static int qemudGetProcessInfo(unsigned long long *cpuTime, int pid) {
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char proc[PATH_MAX];
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FILE *pidinfo;
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unsigned long usertime, systime;
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if (snprintf(proc, sizeof(proc), "/proc/%d/stat", pid) >= (int)sizeof(proc)) {
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return -1;
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}
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if (!(pidinfo = fopen(proc, "r"))) {
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/*printf("cannnot read pid info");*/
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/* VM probably shut down, so fake 0 */
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*cpuTime = 0;
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return 0;
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}
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if (fscanf(pidinfo, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %lu %lu", &usertime, &systime) != 2) {
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qemudDebug("not enough arg");
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return -1;
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}
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/* We got jiffies
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* We want nanoseconds
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* _SC_CLK_TCK is jiffies per second
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* So calulate thus....
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*/
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*cpuTime = 1000 * 1000 * 1000 * (usertime + systime) / sysconf(_SC_CLK_TCK);
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qemudDebug("Got %lu %lu %lld", usertime, systime, *cpuTime);
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fclose(pidinfo);
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return 0;
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}
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struct qemud_vm *qemudFindVMByID(const struct qemud_server *server, int id) {
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struct qemud_vm *vm = server->vms;
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while (vm) {
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if (qemudIsActiveVM(vm) && vm->id == id)
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return vm;
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vm = vm->next;
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}
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return NULL;
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}
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struct qemud_vm *qemudFindVMByUUID(const struct qemud_server *server,
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const unsigned char *uuid) {
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struct qemud_vm *vm = server->vms;
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while (vm) {
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if (!memcmp(vm->def->uuid, uuid, QEMUD_UUID_RAW_LEN))
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return vm;
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vm = vm->next;
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}
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return NULL;
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}
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struct qemud_vm *qemudFindVMByName(const struct qemud_server *server,
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const char *name) {
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struct qemud_vm *vm = server->vms;
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while (vm) {
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if (!strcmp(vm->def->name, name))
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return vm;
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vm = vm->next;
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}
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return NULL;
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}
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int qemudGetVersion(struct qemud_server *server) {
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return server->qemuVersion;
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}
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int qemudListDomains(struct qemud_server *server, int *ids, int nids) {
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struct qemud_vm *vm = server->vms;
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int got = 0;
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while (vm && got < nids) {
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if (qemudIsActiveVM(vm)) {
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ids[got] = vm->id;
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got++;
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}
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vm = vm->next;
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}
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return got;
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}
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int qemudNumDomains(struct qemud_server *server) {
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return server->nactivevms;
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}
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struct qemud_vm *qemudDomainCreate(struct qemud_server *server, const char *xml) {
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struct qemud_vm_def *def;
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struct qemud_vm *vm;
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if (!(def = qemudParseVMDef(server, xml, NULL)))
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return NULL;
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if (!(vm = qemudAssignVMDef(server, def))) {
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qemudFreeVMDef(def);
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return NULL;
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}
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if (qemudStartVMDaemon(server, vm) < 0) {
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qemudRemoveInactiveVM(server, vm);
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return NULL;
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}
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return vm;
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}
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int qemudDomainSuspend(struct qemud_server *server, int id) {
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char *info;
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struct qemud_vm *vm = qemudFindVMByID(server, id);
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if (!vm) {
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qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", id);
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return -1;
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}
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if (!qemudIsActiveVM(vm)) {
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qemudReportError(server, VIR_ERR_OPERATION_FAILED, "domain is not running");
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return -1;
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}
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if (qemudMonitorCommand(server, vm, "stop\n", &info) < 0) {
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qemudReportError(server, VIR_ERR_OPERATION_FAILED, "suspend operation failed");
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return -1;
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}
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qemudDebug("Reply %s", info);
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free(info);
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return 0;
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}
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int qemudDomainResume(struct qemud_server *server, int id) {
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char *info;
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struct qemud_vm *vm = qemudFindVMByID(server, id);
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if (!vm) {
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qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", id);
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return -1;
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}
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if (!qemudIsActiveVM(vm)) {
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qemudReportError(server, VIR_ERR_OPERATION_FAILED, "domain is not running");
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return -1;
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}
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if (qemudMonitorCommand(server, vm, "cont\n", &info) < 0) {
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qemudReportError(server, VIR_ERR_OPERATION_FAILED, "resume operation failed");
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return -1;
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}
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qemudDebug("Reply %s", info);
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free(info);
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return -1;
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}
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int qemudDomainDestroy(struct qemud_server *server, int id) {
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struct qemud_vm *vm = qemudFindVMByID(server, id);
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if (!vm) {
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qemudReportError(server, VIR_ERR_INVALID_DOMAIN,
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"no domain with matching id %d", id);
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return -1;
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}
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return qemudShutdownVMDaemon(server, vm);
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}
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int qemudDomainGetInfo(struct qemud_server *server, const unsigned char *uuid,
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int *runstate,
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unsigned long long *cputime,
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unsigned long *maxmem,
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unsigned long *memory,
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unsigned int *nrVirtCpu) {
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struct qemud_vm *vm = qemudFindVMByUUID(server, uuid);
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if (!vm) {
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qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
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return -1;
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}
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if (!qemudIsActiveVM(vm)) {
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*runstate = QEMUD_STATE_STOPPED;
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} else {
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/* XXX in future need to add PAUSED */
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*runstate = QEMUD_STATE_RUNNING;
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}
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if (!qemudIsActiveVM(vm)) {
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*cputime = 0;
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} else {
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if (qemudGetProcessInfo(cputime, vm->pid) < 0) {
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qemudReportError(server, VIR_ERR_OPERATION_FAILED, "cannot read cputime for domain");
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return -1;
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}
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}
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*maxmem = vm->def->maxmem;
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*memory = vm->def->memory;
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*nrVirtCpu = vm->def->vcpus;
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return 0;
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}
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int qemudDomainSave(struct qemud_server *server, int id,
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const char *path ATTRIBUTE_UNUSED) {
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struct qemud_vm *vm = qemudFindVMByID(server, id);
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if (!vm) {
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qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", id);
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return -1;
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}
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if (!qemudIsActiveVM(vm)) {
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qemudReportError(server, VIR_ERR_OPERATION_FAILED, "domain is not running");
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return -1;
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}
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qemudReportError(server, VIR_ERR_OPERATION_FAILED, "save is not supported");
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return -1;
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}
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int qemudDomainRestore(struct qemud_server *server,
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const char *path ATTRIBUTE_UNUSED) {
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qemudReportError(server, VIR_ERR_OPERATION_FAILED, "restore is not supported");
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return -1;
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}
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int qemudDomainDumpXML(struct qemud_server *server, const unsigned char *uuid, char *xml, int xmllen) {
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struct qemud_vm *vm = qemudFindVMByUUID(server, uuid);
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char *vmxml;
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if (!vm) {
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qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
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return -1;
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}
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vmxml = qemudGenerateXML(server, vm, vm->def, 1);
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if (!vmxml)
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return -1;
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strncpy(xml, vmxml, xmllen);
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xml[xmllen-1] = '\0';
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return 0;
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}
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int qemudListDefinedDomains(struct qemud_server *server, char *const*names, int nnames) {
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struct qemud_vm *vm = server->vms;
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int got = 0;
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while (vm && got < nnames) {
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if (!qemudIsActiveVM(vm)) {
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strncpy(names[got], vm->def->name, QEMUD_MAX_NAME_LEN-1);
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names[got][QEMUD_MAX_NAME_LEN-1] = '\0';
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got++;
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}
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vm = vm->next;
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}
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return got;
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}
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int qemudNumDefinedDomains(struct qemud_server *server) {
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return server->ninactivevms;
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}
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struct qemud_vm *qemudDomainStart(struct qemud_server *server, const unsigned char *uuid) {
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struct qemud_vm *vm = qemudFindVMByUUID(server, uuid);
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|
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if (!vm) {
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qemudReportError(server, VIR_ERR_INVALID_DOMAIN,
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"no domain with matching uuid");
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return NULL;
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}
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return qemudStartVMDaemon(server, vm) < 0 ? NULL : vm;
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}
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|
|
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struct qemud_vm *qemudDomainDefine(struct qemud_server *server, const char *xml) {
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struct qemud_vm_def *def;
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struct qemud_vm *vm;
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if (!(def = qemudParseVMDef(server, xml, NULL)))
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return NULL;
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if (!(vm = qemudAssignVMDef(server, def))) {
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qemudFreeVMDef(def);
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return NULL;
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}
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if (qemudSaveVMDef(server, vm, def) < 0) {
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qemudRemoveInactiveVM(server, vm);
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return NULL;
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}
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return vm;
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}
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|
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int qemudDomainUndefine(struct qemud_server *server, const unsigned char *uuid) {
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struct qemud_vm *vm = qemudFindVMByUUID(server, uuid);
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|
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if (!vm) {
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qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
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return -1;
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}
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|
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if (qemudIsActiveVM(vm)) {
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qemudReportError(server, VIR_ERR_INTERNAL_ERROR, "cannot delete active domain");
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return -1;
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}
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if (qemudDeleteConfig(server, vm->configFile, vm->def->name) < 0)
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return -1;
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|
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if (unlink(vm->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR)
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qemudLog(QEMUD_WARN, "Failed to delete autostart link '%s': %s",
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vm->autostartLink, strerror(errno));
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vm->configFile[0] = '\0';
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vm->autostartLink[0] = '\0';
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|
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qemudRemoveInactiveVM(server, vm);
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|
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return 0;
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}
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|
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int qemudDomainGetAutostart(struct qemud_server *server,
|
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const unsigned char *uuid,
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int *autostart) {
|
|
struct qemud_vm *vm = qemudFindVMByUUID(server, uuid);
|
|
|
|
if (!vm) {
|
|
qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
|
|
return -1;
|
|
}
|
|
|
|
*autostart = vm->autostart;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int qemudDomainSetAutostart(struct qemud_server *server,
|
|
const unsigned char *uuid,
|
|
int autostart) {
|
|
struct qemud_vm *vm = qemudFindVMByUUID(server, uuid);
|
|
|
|
if (!vm) {
|
|
qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid");
|
|
return -1;
|
|
}
|
|
|
|
autostart = (autostart != 0);
|
|
|
|
if (vm->autostart == autostart)
|
|
return 0;
|
|
|
|
if (autostart) {
|
|
int err;
|
|
|
|
if ((err = qemudEnsureDir(server->autostartDir))) {
|
|
qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
|
|
"cannot create autostart directory %s: %s",
|
|
server->autostartDir, strerror(err));
|
|
return -1;
|
|
}
|
|
|
|
if (symlink(vm->configFile, vm->autostartLink) < 0) {
|
|
qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
|
|
"Failed to create symlink '%s' to '%s': %s",
|
|
vm->autostartLink, vm->configFile, strerror(errno));
|
|
return -1;
|
|
}
|
|
} else {
|
|
if (unlink(vm->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) {
|
|
qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
|
|
"Failed to delete symlink '%s': %s",
|
|
vm->autostartLink, strerror(errno));
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
vm->autostart = autostart;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct qemud_network *qemudFindNetworkByUUID(const struct qemud_server *server,
|
|
const unsigned char *uuid) {
|
|
struct qemud_network *network = server->networks;
|
|
|
|
while (network) {
|
|
if (!memcmp(network->def->uuid, uuid, QEMUD_UUID_RAW_LEN))
|
|
return network;
|
|
network = network->next;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct qemud_network *qemudFindNetworkByName(const struct qemud_server *server,
|
|
const char *name) {
|
|
struct qemud_network *network = server->networks;
|
|
|
|
while (network) {
|
|
if (!strcmp(network->def->name, name))
|
|
return network;
|
|
network = network->next;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int qemudNumNetworks(struct qemud_server *server) {
|
|
return server->nactivenetworks;
|
|
}
|
|
|
|
int qemudListNetworks(struct qemud_server *server, char *const*names, int nnames) {
|
|
struct qemud_network *network = server->networks;
|
|
int got = 0;
|
|
while (network && got < nnames) {
|
|
if (qemudIsActiveNetwork(network)) {
|
|
strncpy(names[got], network->def->name, QEMUD_MAX_NAME_LEN-1);
|
|
names[got][QEMUD_MAX_NAME_LEN-1] = '\0';
|
|
got++;
|
|
}
|
|
network = network->next;
|
|
}
|
|
return got;
|
|
}
|
|
|
|
int qemudNumDefinedNetworks(struct qemud_server *server) {
|
|
return server->ninactivenetworks;
|
|
}
|
|
|
|
int qemudListDefinedNetworks(struct qemud_server *server, char *const*names, int nnames) {
|
|
struct qemud_network *network = server->networks;
|
|
int got = 0;
|
|
while (network && got < nnames) {
|
|
if (!qemudIsActiveNetwork(network)) {
|
|
strncpy(names[got], network->def->name, QEMUD_MAX_NAME_LEN-1);
|
|
names[got][QEMUD_MAX_NAME_LEN-1] = '\0';
|
|
got++;
|
|
}
|
|
network = network->next;
|
|
}
|
|
return got;
|
|
}
|
|
|
|
struct qemud_network *qemudNetworkCreate(struct qemud_server *server, const char *xml) {
|
|
struct qemud_network_def *def;
|
|
struct qemud_network *network;
|
|
|
|
if (!(def = qemudParseNetworkDef(server, xml, NULL)))
|
|
return NULL;
|
|
|
|
if (!(network = qemudAssignNetworkDef(server, def))) {
|
|
qemudFreeNetworkDef(def);
|
|
return NULL;
|
|
}
|
|
|
|
if (qemudStartNetworkDaemon(server, network) < 0) {
|
|
qemudRemoveInactiveNetwork(server, network);
|
|
return NULL;
|
|
}
|
|
|
|
return network;
|
|
}
|
|
|
|
struct qemud_network *qemudNetworkDefine(struct qemud_server *server, const char *xml) {
|
|
struct qemud_network_def *def;
|
|
struct qemud_network *network;
|
|
|
|
if (!(def = qemudParseNetworkDef(server, xml, NULL)))
|
|
return NULL;
|
|
|
|
if (!(network = qemudAssignNetworkDef(server, def))) {
|
|
qemudFreeNetworkDef(def);
|
|
return NULL;
|
|
}
|
|
|
|
if (qemudSaveNetworkDef(server, network, def) < 0) {
|
|
qemudRemoveInactiveNetwork(server, network);
|
|
return NULL;
|
|
}
|
|
|
|
return network;
|
|
}
|
|
|
|
int qemudNetworkUndefine(struct qemud_server *server, const unsigned char *uuid) {
|
|
struct qemud_network *network = qemudFindNetworkByUUID(server, uuid);
|
|
|
|
if (!network) {
|
|
qemudReportError(server, VIR_ERR_INVALID_DOMAIN, "no network with matching uuid");
|
|
return -1;
|
|
}
|
|
|
|
if (qemudDeleteConfig(server, network->configFile, network->def->name) < 0)
|
|
return -1;
|
|
|
|
if (unlink(network->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR)
|
|
qemudLog(QEMUD_WARN, "Failed to delete autostart link '%s': %s",
|
|
network->autostartLink, strerror(errno));
|
|
|
|
network->configFile[0] = '\0';
|
|
network->autostartLink[0] = '\0';
|
|
|
|
qemudRemoveInactiveNetwork(server, network);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct qemud_network *qemudNetworkStart(struct qemud_server *server, const unsigned char *uuid) {
|
|
struct qemud_network *network = qemudFindNetworkByUUID(server, uuid);
|
|
|
|
if (!network) {
|
|
qemudReportError(server, VIR_ERR_INVALID_NETWORK,
|
|
"no network with matching uuid");
|
|
return NULL;
|
|
}
|
|
|
|
return qemudStartNetworkDaemon(server, network) < 0 ? NULL : network;
|
|
}
|
|
|
|
int qemudNetworkDestroy(struct qemud_server *server, const unsigned char *uuid) {
|
|
struct qemud_network *network = qemudFindNetworkByUUID(server, uuid);
|
|
|
|
if (!network) {
|
|
qemudReportError(server, VIR_ERR_INVALID_NETWORK,
|
|
"no network with matching uuid");
|
|
return -1;
|
|
}
|
|
|
|
return qemudShutdownNetworkDaemon(server, network);
|
|
}
|
|
|
|
int qemudNetworkDumpXML(struct qemud_server *server, const unsigned char *uuid, char *xml, int xmllen) {
|
|
struct qemud_network *network = qemudFindNetworkByUUID(server, uuid);
|
|
char *networkxml;
|
|
if (!network) {
|
|
qemudReportError(server, VIR_ERR_INVALID_NETWORK, "no network with matching uuid");
|
|
return -1;
|
|
}
|
|
|
|
networkxml = qemudGenerateNetworkXML(server, network, network->def);
|
|
if (!networkxml)
|
|
return -1;
|
|
|
|
strncpy(xml, networkxml, xmllen);
|
|
xml[xmllen-1] = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
int qemudNetworkGetBridgeName(struct qemud_server *server, const unsigned char *uuid, char *ifname, int ifnamelen) {
|
|
struct qemud_network *network = qemudFindNetworkByUUID(server, uuid);
|
|
|
|
if (!network) {
|
|
qemudReportError(server, VIR_ERR_INVALID_NETWORK, "no network with matching id");
|
|
return -1;
|
|
}
|
|
|
|
strncpy(ifname, network->bridge, ifnamelen);
|
|
ifname[ifnamelen-1] = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
int qemudNetworkGetAutostart(struct qemud_server *server,
|
|
const unsigned char *uuid,
|
|
int *autostart) {
|
|
struct qemud_network *network = qemudFindNetworkByUUID(server, uuid);
|
|
|
|
if (!network) {
|
|
qemudReportError(server, VIR_ERR_INVALID_NETWORK, "no network with matching uuid");
|
|
return -1;
|
|
}
|
|
|
|
*autostart = network->autostart;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int qemudNetworkSetAutostart(struct qemud_server *server,
|
|
const unsigned char *uuid,
|
|
int autostart) {
|
|
struct qemud_network *network = qemudFindNetworkByUUID(server, uuid);
|
|
|
|
if (!network) {
|
|
qemudReportError(server, VIR_ERR_INVALID_NETWORK, "no network with matching uuid");
|
|
return -1;
|
|
}
|
|
|
|
autostart = (autostart != 0);
|
|
|
|
if (network->autostart == autostart)
|
|
return 0;
|
|
|
|
if (autostart) {
|
|
int err;
|
|
|
|
if ((err = qemudEnsureDir(server->networkAutostartDir))) {
|
|
qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
|
|
"cannot create autostart directory %s: %s",
|
|
server->networkAutostartDir, strerror(err));
|
|
return -1;
|
|
}
|
|
|
|
if (symlink(network->configFile, network->autostartLink) < 0) {
|
|
qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
|
|
"Failed to create symlink '%s' to '%s': %s",
|
|
network->autostartLink, network->configFile, strerror(errno));
|
|
return -1;
|
|
}
|
|
} else {
|
|
if (unlink(network->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) {
|
|
qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
|
|
"Failed to delete symlink '%s': %s",
|
|
network->autostartLink, strerror(errno));
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
network->autostart = autostart;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* indent-tabs-mode: nil
|
|
* c-indent-level: 4
|
|
* c-basic-offset: 4
|
|
* tab-width: 4
|
|
* End:
|
|
*/
|