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/*
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* QEMU Guest Agent POSIX-specific command implementations
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*
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* Copyright IBM Corp. 2011
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*
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* Authors:
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* Michael Roth <mdroth@linux.vnet.ibm.com>
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* Michal Privoznik <mprivozn@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include <glib.h> |
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#include <sys/types.h> |
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#include <sys/ioctl.h> |
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#include <sys/wait.h> |
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#include "qga/guest-agent-core.h" |
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#include "qga-qmp-commands.h" |
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#include "qerror.h" |
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#include "qemu-queue.h" |
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#include "host-utils.h" |
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|
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#ifndef CONFIG_HAS_ENVIRON
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#ifdef __APPLE__
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#include <crt_externs.h> |
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#define environ (*_NSGetEnviron())
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#else
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extern char **environ; |
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#endif
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#endif
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|
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#if defined(__linux__)
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#include <mntent.h> |
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#include <linux/fs.h> |
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#include <ifaddrs.h> |
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#include <arpa/inet.h> |
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#include <sys/socket.h> |
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#include <net/if.h> |
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|
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#if defined(__linux__) && defined(FIFREEZE)
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#define CONFIG_FSFREEZE
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#endif
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#endif
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|
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void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err) |
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{ |
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const char *shutdown_flag; |
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pid_t rpid, pid; |
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int status;
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|
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slog("guest-shutdown called, mode: %s", mode);
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if (!has_mode || strcmp(mode, "powerdown") == 0) { |
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shutdown_flag = "-P";
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} else if (strcmp(mode, "halt") == 0) { |
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shutdown_flag = "-H";
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} else if (strcmp(mode, "reboot") == 0) { |
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shutdown_flag = "-r";
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} else {
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error_set(err, QERR_INVALID_PARAMETER_VALUE, "mode",
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"halt|powerdown|reboot");
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return;
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} |
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|
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pid = fork(); |
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if (pid == 0) { |
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/* child, start the shutdown */
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setsid(); |
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reopen_fd_to_null(0);
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reopen_fd_to_null(1);
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reopen_fd_to_null(2);
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|
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execle("/sbin/shutdown", "shutdown", shutdown_flag, "+0", |
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"hypervisor initiated shutdown", (char*)NULL, environ); |
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_exit(EXIT_FAILURE); |
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} else if (pid < 0) { |
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goto exit_err;
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} |
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|
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do {
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rpid = waitpid(pid, &status, 0);
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} while (rpid == -1 && errno == EINTR); |
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if (rpid == pid && WIFEXITED(status) && !WEXITSTATUS(status)) {
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return;
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} |
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exit_err:
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error_set(err, QERR_UNDEFINED_ERROR); |
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} |
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|
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typedef struct GuestFileHandle { |
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uint64_t id; |
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FILE *fh; |
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QTAILQ_ENTRY(GuestFileHandle) next; |
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} GuestFileHandle; |
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|
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static struct { |
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QTAILQ_HEAD(, GuestFileHandle) filehandles; |
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} guest_file_state; |
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|
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static void guest_file_handle_add(FILE *fh) |
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{ |
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GuestFileHandle *gfh; |
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|
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gfh = g_malloc0(sizeof(GuestFileHandle));
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gfh->id = fileno(fh); |
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gfh->fh = fh; |
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QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); |
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} |
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|
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static GuestFileHandle *guest_file_handle_find(int64_t id)
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{ |
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GuestFileHandle *gfh; |
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|
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QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) |
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{ |
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if (gfh->id == id) {
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return gfh;
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} |
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} |
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return NULL; |
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} |
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|
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int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, Error **err) |
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{ |
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FILE *fh; |
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int fd;
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int64_t ret = -1;
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|
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if (!has_mode) {
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mode = "r";
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} |
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slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
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fh = fopen(path, mode); |
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if (!fh) {
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error_set(err, QERR_OPEN_FILE_FAILED, path); |
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return -1; |
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} |
140 |
|
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/* set fd non-blocking to avoid common use cases (like reading from a
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* named pipe) from hanging the agent
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*/
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fd = fileno(fh); |
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ret = fcntl(fd, F_GETFL); |
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ret = fcntl(fd, F_SETFL, ret | O_NONBLOCK); |
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if (ret == -1) { |
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error_set(err, QERR_QGA_COMMAND_FAILED, "fcntl() failed");
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fclose(fh); |
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return -1; |
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} |
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|
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guest_file_handle_add(fh); |
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slog("guest-file-open, handle: %d", fd);
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return fd;
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} |
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|
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void qmp_guest_file_close(int64_t handle, Error **err)
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{ |
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GuestFileHandle *gfh = guest_file_handle_find(handle); |
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int ret;
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slog("guest-file-close called, handle: %ld", handle);
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if (!gfh) {
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error_set(err, QERR_FD_NOT_FOUND, "handle");
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return;
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} |
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ret = fclose(gfh->fh); |
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if (ret == -1) { |
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error_set(err, QERR_QGA_COMMAND_FAILED, "fclose() failed");
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return;
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} |
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QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); |
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g_free(gfh); |
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} |
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|
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struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, |
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int64_t count, Error **err) |
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{ |
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GuestFileHandle *gfh = guest_file_handle_find(handle); |
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GuestFileRead *read_data = NULL;
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guchar *buf; |
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FILE *fh; |
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size_t read_count; |
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|
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if (!gfh) {
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error_set(err, QERR_FD_NOT_FOUND, "handle");
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return NULL; |
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} |
192 |
|
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if (!has_count) {
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count = QGA_READ_COUNT_DEFAULT; |
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} else if (count < 0) { |
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error_set(err, QERR_INVALID_PARAMETER, "count");
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return NULL; |
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} |
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|
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fh = gfh->fh; |
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buf = g_malloc0(count+1);
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read_count = fread(buf, 1, count, fh);
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if (ferror(fh)) {
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slog("guest-file-read failed, handle: %ld", handle);
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error_set(err, QERR_QGA_COMMAND_FAILED, "fread() failed");
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} else {
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buf[read_count] = 0;
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read_data = g_malloc0(sizeof(GuestFileRead));
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read_data->count = read_count; |
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read_data->eof = feof(fh); |
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if (read_count) {
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read_data->buf_b64 = g_base64_encode(buf, read_count); |
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} |
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} |
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g_free(buf); |
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clearerr(fh); |
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return read_data;
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} |
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|
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GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, |
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bool has_count, int64_t count, Error **err)
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{ |
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GuestFileWrite *write_data = NULL;
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guchar *buf; |
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gsize buf_len; |
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int write_count;
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GuestFileHandle *gfh = guest_file_handle_find(handle); |
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FILE *fh; |
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if (!gfh) {
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error_set(err, QERR_FD_NOT_FOUND, "handle");
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return NULL; |
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} |
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fh = gfh->fh; |
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buf = g_base64_decode(buf_b64, &buf_len); |
238 |
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if (!has_count) {
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count = buf_len; |
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} else if (count < 0 || count > buf_len) { |
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g_free(buf); |
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error_set(err, QERR_INVALID_PARAMETER, "count");
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return NULL; |
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} |
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write_count = fwrite(buf, 1, count, fh);
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if (ferror(fh)) {
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slog("guest-file-write failed, handle: %ld", handle);
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error_set(err, QERR_QGA_COMMAND_FAILED, "fwrite() error");
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} else {
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write_data = g_malloc0(sizeof(GuestFileWrite));
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write_data->count = write_count; |
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write_data->eof = feof(fh); |
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} |
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g_free(buf); |
257 |
clearerr(fh); |
258 |
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return write_data;
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} |
261 |
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struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
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int64_t whence, Error **err) |
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{ |
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GuestFileHandle *gfh = guest_file_handle_find(handle); |
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GuestFileSeek *seek_data = NULL;
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FILE *fh; |
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int ret;
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|
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if (!gfh) {
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error_set(err, QERR_FD_NOT_FOUND, "handle");
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return NULL; |
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} |
274 |
|
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fh = gfh->fh; |
276 |
ret = fseek(fh, offset, whence); |
277 |
if (ret == -1) { |
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error_set(err, QERR_QGA_COMMAND_FAILED, strerror(errno)); |
279 |
} else {
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seek_data = g_malloc0(sizeof(GuestFileRead));
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seek_data->position = ftell(fh); |
282 |
seek_data->eof = feof(fh); |
283 |
} |
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clearerr(fh); |
285 |
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return seek_data;
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} |
288 |
|
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void qmp_guest_file_flush(int64_t handle, Error **err)
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{ |
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GuestFileHandle *gfh = guest_file_handle_find(handle); |
292 |
FILE *fh; |
293 |
int ret;
|
294 |
|
295 |
if (!gfh) {
|
296 |
error_set(err, QERR_FD_NOT_FOUND, "handle");
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297 |
return;
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298 |
} |
299 |
|
300 |
fh = gfh->fh; |
301 |
ret = fflush(fh); |
302 |
if (ret == EOF) { |
303 |
error_set(err, QERR_QGA_COMMAND_FAILED, strerror(errno)); |
304 |
} |
305 |
} |
306 |
|
307 |
static void guest_file_init(void) |
308 |
{ |
309 |
QTAILQ_INIT(&guest_file_state.filehandles); |
310 |
} |
311 |
|
312 |
/* linux-specific implementations. avoid this if at all possible. */
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313 |
#if defined(__linux__)
|
314 |
|
315 |
#if defined(CONFIG_FSFREEZE)
|
316 |
|
317 |
typedef struct FsMount { |
318 |
char *dirname;
|
319 |
char *devtype;
|
320 |
QTAILQ_ENTRY(FsMount) next; |
321 |
} FsMount; |
322 |
|
323 |
typedef QTAILQ_HEAD(, FsMount) FsMountList;
|
324 |
|
325 |
static void free_fs_mount_list(FsMountList *mounts) |
326 |
{ |
327 |
FsMount *mount, *temp; |
328 |
|
329 |
if (!mounts) {
|
330 |
return;
|
331 |
} |
332 |
|
333 |
QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { |
334 |
QTAILQ_REMOVE(mounts, mount, next); |
335 |
g_free(mount->dirname); |
336 |
g_free(mount->devtype); |
337 |
g_free(mount); |
338 |
} |
339 |
} |
340 |
|
341 |
/*
|
342 |
* Walk the mount table and build a list of local file systems
|
343 |
*/
|
344 |
static int build_fs_mount_list(FsMountList *mounts) |
345 |
{ |
346 |
struct mntent *ment;
|
347 |
FsMount *mount; |
348 |
char const *mtab = "/proc/self/mounts"; |
349 |
FILE *fp; |
350 |
|
351 |
fp = setmntent(mtab, "r");
|
352 |
if (!fp) {
|
353 |
g_warning("fsfreeze: unable to read mtab");
|
354 |
return -1; |
355 |
} |
356 |
|
357 |
while ((ment = getmntent(fp))) {
|
358 |
/*
|
359 |
* An entry which device name doesn't start with a '/' is
|
360 |
* either a dummy file system or a network file system.
|
361 |
* Add special handling for smbfs and cifs as is done by
|
362 |
* coreutils as well.
|
363 |
*/
|
364 |
if ((ment->mnt_fsname[0] != '/') || |
365 |
(strcmp(ment->mnt_type, "smbfs") == 0) || |
366 |
(strcmp(ment->mnt_type, "cifs") == 0)) { |
367 |
continue;
|
368 |
} |
369 |
|
370 |
mount = g_malloc0(sizeof(FsMount));
|
371 |
mount->dirname = g_strdup(ment->mnt_dir); |
372 |
mount->devtype = g_strdup(ment->mnt_type); |
373 |
|
374 |
QTAILQ_INSERT_TAIL(mounts, mount, next); |
375 |
} |
376 |
|
377 |
endmntent(fp); |
378 |
|
379 |
return 0; |
380 |
} |
381 |
|
382 |
/*
|
383 |
* Return status of freeze/thaw
|
384 |
*/
|
385 |
GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err) |
386 |
{ |
387 |
if (ga_is_frozen(ga_state)) {
|
388 |
return GUEST_FSFREEZE_STATUS_FROZEN;
|
389 |
} |
390 |
|
391 |
return GUEST_FSFREEZE_STATUS_THAWED;
|
392 |
} |
393 |
|
394 |
/*
|
395 |
* Walk list of mounted file systems in the guest, and freeze the ones which
|
396 |
* are real local file systems.
|
397 |
*/
|
398 |
int64_t qmp_guest_fsfreeze_freeze(Error **err) |
399 |
{ |
400 |
int ret = 0, i = 0; |
401 |
FsMountList mounts; |
402 |
struct FsMount *mount;
|
403 |
int fd;
|
404 |
char err_msg[512]; |
405 |
|
406 |
slog("guest-fsfreeze called");
|
407 |
|
408 |
QTAILQ_INIT(&mounts); |
409 |
ret = build_fs_mount_list(&mounts); |
410 |
if (ret < 0) { |
411 |
return ret;
|
412 |
} |
413 |
|
414 |
/* cannot risk guest agent blocking itself on a write in this state */
|
415 |
ga_set_frozen(ga_state); |
416 |
|
417 |
QTAILQ_FOREACH(mount, &mounts, next) { |
418 |
fd = qemu_open(mount->dirname, O_RDONLY); |
419 |
if (fd == -1) { |
420 |
sprintf(err_msg, "failed to open %s, %s", mount->dirname,
|
421 |
strerror(errno)); |
422 |
error_set(err, QERR_QGA_COMMAND_FAILED, err_msg); |
423 |
goto error;
|
424 |
} |
425 |
|
426 |
/* we try to cull filesytems we know won't work in advance, but other
|
427 |
* filesytems may not implement fsfreeze for less obvious reasons.
|
428 |
* these will report EOPNOTSUPP. we simply ignore these when tallying
|
429 |
* the number of frozen filesystems.
|
430 |
*
|
431 |
* any other error means a failure to freeze a filesystem we
|
432 |
* expect to be freezable, so return an error in those cases
|
433 |
* and return system to thawed state.
|
434 |
*/
|
435 |
ret = ioctl(fd, FIFREEZE); |
436 |
if (ret == -1) { |
437 |
if (errno != EOPNOTSUPP) {
|
438 |
sprintf(err_msg, "failed to freeze %s, %s",
|
439 |
mount->dirname, strerror(errno)); |
440 |
error_set(err, QERR_QGA_COMMAND_FAILED, err_msg); |
441 |
close(fd); |
442 |
goto error;
|
443 |
} |
444 |
} else {
|
445 |
i++; |
446 |
} |
447 |
close(fd); |
448 |
} |
449 |
|
450 |
free_fs_mount_list(&mounts); |
451 |
return i;
|
452 |
|
453 |
error:
|
454 |
free_fs_mount_list(&mounts); |
455 |
qmp_guest_fsfreeze_thaw(NULL);
|
456 |
return 0; |
457 |
} |
458 |
|
459 |
/*
|
460 |
* Walk list of frozen file systems in the guest, and thaw them.
|
461 |
*/
|
462 |
int64_t qmp_guest_fsfreeze_thaw(Error **err) |
463 |
{ |
464 |
int ret;
|
465 |
FsMountList mounts; |
466 |
FsMount *mount; |
467 |
int fd, i = 0, logged; |
468 |
|
469 |
QTAILQ_INIT(&mounts); |
470 |
ret = build_fs_mount_list(&mounts); |
471 |
if (ret) {
|
472 |
error_set(err, QERR_QGA_COMMAND_FAILED, |
473 |
"failed to enumerate filesystems");
|
474 |
return 0; |
475 |
} |
476 |
|
477 |
QTAILQ_FOREACH(mount, &mounts, next) { |
478 |
logged = false;
|
479 |
fd = qemu_open(mount->dirname, O_RDONLY); |
480 |
if (fd == -1) { |
481 |
continue;
|
482 |
} |
483 |
/* we have no way of knowing whether a filesystem was actually unfrozen
|
484 |
* as a result of a successful call to FITHAW, only that if an error
|
485 |
* was returned the filesystem was *not* unfrozen by that particular
|
486 |
* call.
|
487 |
*
|
488 |
* since multiple preceding FIFREEZEs require multiple calls to FITHAW
|
489 |
* to unfreeze, continuing issuing FITHAW until an error is returned,
|
490 |
* in which case either the filesystem is in an unfreezable state, or,
|
491 |
* more likely, it was thawed previously (and remains so afterward).
|
492 |
*
|
493 |
* also, since the most recent successful call is the one that did
|
494 |
* the actual unfreeze, we can use this to provide an accurate count
|
495 |
* of the number of filesystems unfrozen by guest-fsfreeze-thaw, which
|
496 |
* may * be useful for determining whether a filesystem was unfrozen
|
497 |
* during the freeze/thaw phase by a process other than qemu-ga.
|
498 |
*/
|
499 |
do {
|
500 |
ret = ioctl(fd, FITHAW); |
501 |
if (ret == 0 && !logged) { |
502 |
i++; |
503 |
logged = true;
|
504 |
} |
505 |
} while (ret == 0); |
506 |
close(fd); |
507 |
} |
508 |
|
509 |
ga_unset_frozen(ga_state); |
510 |
free_fs_mount_list(&mounts); |
511 |
return i;
|
512 |
} |
513 |
|
514 |
static void guest_fsfreeze_cleanup(void) |
515 |
{ |
516 |
int64_t ret; |
517 |
Error *err = NULL;
|
518 |
|
519 |
if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
|
520 |
ret = qmp_guest_fsfreeze_thaw(&err); |
521 |
if (ret < 0 || err) { |
522 |
slog("failed to clean up frozen filesystems");
|
523 |
} |
524 |
} |
525 |
} |
526 |
#endif /* CONFIG_FSFREEZE */ |
527 |
|
528 |
#define LINUX_SYS_STATE_FILE "/sys/power/state" |
529 |
#define SUSPEND_SUPPORTED 0 |
530 |
#define SUSPEND_NOT_SUPPORTED 1 |
531 |
|
532 |
static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg, |
533 |
const char *sysfile_str, Error **err) |
534 |
{ |
535 |
char *pmutils_path;
|
536 |
pid_t pid, rpid; |
537 |
int status;
|
538 |
|
539 |
pmutils_path = g_find_program_in_path(pmutils_bin); |
540 |
|
541 |
pid = fork(); |
542 |
if (!pid) {
|
543 |
char buf[32]; /* hopefully big enough */ |
544 |
ssize_t ret; |
545 |
int fd;
|
546 |
|
547 |
setsid(); |
548 |
reopen_fd_to_null(0);
|
549 |
reopen_fd_to_null(1);
|
550 |
reopen_fd_to_null(2);
|
551 |
|
552 |
if (pmutils_path) {
|
553 |
execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ);
|
554 |
} |
555 |
|
556 |
/*
|
557 |
* If we get here either pm-utils is not installed or execle() has
|
558 |
* failed. Let's try the manual method if the caller wants it.
|
559 |
*/
|
560 |
|
561 |
if (!sysfile_str) {
|
562 |
_exit(SUSPEND_NOT_SUPPORTED); |
563 |
} |
564 |
|
565 |
fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); |
566 |
if (fd < 0) { |
567 |
_exit(SUSPEND_NOT_SUPPORTED); |
568 |
} |
569 |
|
570 |
ret = read(fd, buf, sizeof(buf)-1); |
571 |
if (ret <= 0) { |
572 |
_exit(SUSPEND_NOT_SUPPORTED); |
573 |
} |
574 |
buf[ret] = '\0';
|
575 |
|
576 |
if (strstr(buf, sysfile_str)) {
|
577 |
_exit(SUSPEND_SUPPORTED); |
578 |
} |
579 |
|
580 |
_exit(SUSPEND_NOT_SUPPORTED); |
581 |
} |
582 |
|
583 |
g_free(pmutils_path); |
584 |
|
585 |
if (pid < 0) { |
586 |
goto undef_err;
|
587 |
} |
588 |
|
589 |
do {
|
590 |
rpid = waitpid(pid, &status, 0);
|
591 |
} while (rpid == -1 && errno == EINTR); |
592 |
if (rpid == pid && WIFEXITED(status)) {
|
593 |
switch (WEXITSTATUS(status)) {
|
594 |
case SUSPEND_SUPPORTED:
|
595 |
return;
|
596 |
case SUSPEND_NOT_SUPPORTED:
|
597 |
error_set(err, QERR_UNSUPPORTED); |
598 |
return;
|
599 |
default:
|
600 |
goto undef_err;
|
601 |
} |
602 |
} |
603 |
|
604 |
undef_err:
|
605 |
error_set(err, QERR_UNDEFINED_ERROR); |
606 |
} |
607 |
|
608 |
static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, |
609 |
Error **err) |
610 |
{ |
611 |
char *pmutils_path;
|
612 |
pid_t rpid, pid; |
613 |
int status;
|
614 |
|
615 |
pmutils_path = g_find_program_in_path(pmutils_bin); |
616 |
|
617 |
pid = fork(); |
618 |
if (pid == 0) { |
619 |
/* child */
|
620 |
int fd;
|
621 |
|
622 |
setsid(); |
623 |
reopen_fd_to_null(0);
|
624 |
reopen_fd_to_null(1);
|
625 |
reopen_fd_to_null(2);
|
626 |
|
627 |
if (pmutils_path) {
|
628 |
execle(pmutils_path, pmutils_bin, NULL, environ);
|
629 |
} |
630 |
|
631 |
/*
|
632 |
* If we get here either pm-utils is not installed or execle() has
|
633 |
* failed. Let's try the manual method if the caller wants it.
|
634 |
*/
|
635 |
|
636 |
if (!sysfile_str) {
|
637 |
_exit(EXIT_FAILURE); |
638 |
} |
639 |
|
640 |
fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); |
641 |
if (fd < 0) { |
642 |
_exit(EXIT_FAILURE); |
643 |
} |
644 |
|
645 |
if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { |
646 |
_exit(EXIT_FAILURE); |
647 |
} |
648 |
|
649 |
_exit(EXIT_SUCCESS); |
650 |
} |
651 |
|
652 |
g_free(pmutils_path); |
653 |
|
654 |
if (pid < 0) { |
655 |
goto exit_err;
|
656 |
} |
657 |
|
658 |
do {
|
659 |
rpid = waitpid(pid, &status, 0);
|
660 |
} while (rpid == -1 && errno == EINTR); |
661 |
if (rpid == pid && WIFEXITED(status) && !WEXITSTATUS(status)) {
|
662 |
return;
|
663 |
} |
664 |
|
665 |
exit_err:
|
666 |
error_set(err, QERR_UNDEFINED_ERROR); |
667 |
} |
668 |
|
669 |
void qmp_guest_suspend_disk(Error **err)
|
670 |
{ |
671 |
bios_supports_mode("pm-is-supported", "--hibernate", "disk", err); |
672 |
if (error_is_set(err)) {
|
673 |
return;
|
674 |
} |
675 |
|
676 |
guest_suspend("pm-hibernate", "disk", err); |
677 |
} |
678 |
|
679 |
void qmp_guest_suspend_ram(Error **err)
|
680 |
{ |
681 |
bios_supports_mode("pm-is-supported", "--suspend", "mem", err); |
682 |
if (error_is_set(err)) {
|
683 |
return;
|
684 |
} |
685 |
|
686 |
guest_suspend("pm-suspend", "mem", err); |
687 |
} |
688 |
|
689 |
void qmp_guest_suspend_hybrid(Error **err)
|
690 |
{ |
691 |
bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, err); |
692 |
if (error_is_set(err)) {
|
693 |
return;
|
694 |
} |
695 |
|
696 |
guest_suspend("pm-suspend-hybrid", NULL, err); |
697 |
} |
698 |
|
699 |
static GuestNetworkInterfaceList *
|
700 |
guest_find_interface(GuestNetworkInterfaceList *head, |
701 |
const char *name) |
702 |
{ |
703 |
for (; head; head = head->next) {
|
704 |
if (strcmp(head->value->name, name) == 0) { |
705 |
break;
|
706 |
} |
707 |
} |
708 |
|
709 |
return head;
|
710 |
} |
711 |
|
712 |
/*
|
713 |
* Build information about guest interfaces
|
714 |
*/
|
715 |
GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) |
716 |
{ |
717 |
GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; |
718 |
struct ifaddrs *ifap, *ifa;
|
719 |
char err_msg[512]; |
720 |
|
721 |
if (getifaddrs(&ifap) < 0) { |
722 |
snprintf(err_msg, sizeof(err_msg),
|
723 |
"getifaddrs failed: %s", strerror(errno));
|
724 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
725 |
goto error;
|
726 |
} |
727 |
|
728 |
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
729 |
GuestNetworkInterfaceList *info; |
730 |
GuestIpAddressList **address_list = NULL, *address_item = NULL; |
731 |
char addr4[INET_ADDRSTRLEN];
|
732 |
char addr6[INET6_ADDRSTRLEN];
|
733 |
int sock;
|
734 |
struct ifreq ifr;
|
735 |
unsigned char *mac_addr; |
736 |
void *p;
|
737 |
|
738 |
g_debug("Processing %s interface", ifa->ifa_name);
|
739 |
|
740 |
info = guest_find_interface(head, ifa->ifa_name); |
741 |
|
742 |
if (!info) {
|
743 |
info = g_malloc0(sizeof(*info));
|
744 |
info->value = g_malloc0(sizeof(*info->value));
|
745 |
info->value->name = g_strdup(ifa->ifa_name); |
746 |
|
747 |
if (!cur_item) {
|
748 |
head = cur_item = info; |
749 |
} else {
|
750 |
cur_item->next = info; |
751 |
cur_item = info; |
752 |
} |
753 |
} |
754 |
|
755 |
if (!info->value->has_hardware_address &&
|
756 |
ifa->ifa_flags & SIOCGIFHWADDR) { |
757 |
/* we haven't obtained HW address yet */
|
758 |
sock = socket(PF_INET, SOCK_STREAM, 0);
|
759 |
if (sock == -1) { |
760 |
snprintf(err_msg, sizeof(err_msg),
|
761 |
"failed to create socket: %s", strerror(errno));
|
762 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
763 |
goto error;
|
764 |
} |
765 |
|
766 |
memset(&ifr, 0, sizeof(ifr)); |
767 |
strncpy(ifr.ifr_name, info->value->name, IF_NAMESIZE); |
768 |
if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { |
769 |
snprintf(err_msg, sizeof(err_msg),
|
770 |
"failed to get MAC address of %s: %s",
|
771 |
ifa->ifa_name, |
772 |
strerror(errno)); |
773 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
774 |
goto error;
|
775 |
} |
776 |
|
777 |
mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; |
778 |
|
779 |
if (asprintf(&info->value->hardware_address,
|
780 |
"%02x:%02x:%02x:%02x:%02x:%02x",
|
781 |
(int) mac_addr[0], (int) mac_addr[1], |
782 |
(int) mac_addr[2], (int) mac_addr[3], |
783 |
(int) mac_addr[4], (int) mac_addr[5]) == -1) { |
784 |
snprintf(err_msg, sizeof(err_msg),
|
785 |
"failed to format MAC: %s", strerror(errno));
|
786 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
787 |
goto error;
|
788 |
} |
789 |
|
790 |
info->value->has_hardware_address = true;
|
791 |
close(sock); |
792 |
} |
793 |
|
794 |
if (ifa->ifa_addr &&
|
795 |
ifa->ifa_addr->sa_family == AF_INET) { |
796 |
/* interface with IPv4 address */
|
797 |
address_item = g_malloc0(sizeof(*address_item));
|
798 |
address_item->value = g_malloc0(sizeof(*address_item->value));
|
799 |
p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr;
|
800 |
if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { |
801 |
snprintf(err_msg, sizeof(err_msg),
|
802 |
"inet_ntop failed : %s", strerror(errno));
|
803 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
804 |
goto error;
|
805 |
} |
806 |
|
807 |
address_item->value->ip_address = g_strdup(addr4); |
808 |
address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; |
809 |
|
810 |
if (ifa->ifa_netmask) {
|
811 |
/* Count the number of set bits in netmask.
|
812 |
* This is safe as '1' and '0' cannot be shuffled in netmask. */
|
813 |
p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr;
|
814 |
address_item->value->prefix = ctpop32(((uint32_t *) p)[0]);
|
815 |
} |
816 |
} else if (ifa->ifa_addr && |
817 |
ifa->ifa_addr->sa_family == AF_INET6) { |
818 |
/* interface with IPv6 address */
|
819 |
address_item = g_malloc0(sizeof(*address_item));
|
820 |
address_item->value = g_malloc0(sizeof(*address_item->value));
|
821 |
p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
|
822 |
if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { |
823 |
snprintf(err_msg, sizeof(err_msg),
|
824 |
"inet_ntop failed : %s", strerror(errno));
|
825 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
826 |
goto error;
|
827 |
} |
828 |
|
829 |
address_item->value->ip_address = g_strdup(addr6); |
830 |
address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; |
831 |
|
832 |
if (ifa->ifa_netmask) {
|
833 |
/* Count the number of set bits in netmask.
|
834 |
* This is safe as '1' and '0' cannot be shuffled in netmask. */
|
835 |
p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr;
|
836 |
address_item->value->prefix = |
837 |
ctpop32(((uint32_t *) p)[0]) +
|
838 |
ctpop32(((uint32_t *) p)[1]) +
|
839 |
ctpop32(((uint32_t *) p)[2]) +
|
840 |
ctpop32(((uint32_t *) p)[3]);
|
841 |
} |
842 |
} |
843 |
|
844 |
if (!address_item) {
|
845 |
continue;
|
846 |
} |
847 |
|
848 |
address_list = &info->value->ip_addresses; |
849 |
|
850 |
while (*address_list && (*address_list)->next) {
|
851 |
address_list = &(*address_list)->next; |
852 |
} |
853 |
|
854 |
if (!*address_list) {
|
855 |
*address_list = address_item; |
856 |
} else {
|
857 |
(*address_list)->next = address_item; |
858 |
} |
859 |
|
860 |
info->value->has_ip_addresses = true;
|
861 |
|
862 |
|
863 |
} |
864 |
|
865 |
freeifaddrs(ifap); |
866 |
return head;
|
867 |
|
868 |
error:
|
869 |
freeifaddrs(ifap); |
870 |
qapi_free_GuestNetworkInterfaceList(head); |
871 |
return NULL; |
872 |
} |
873 |
|
874 |
#else /* defined(__linux__) */ |
875 |
|
876 |
void qmp_guest_suspend_disk(Error **err)
|
877 |
{ |
878 |
error_set(err, QERR_UNSUPPORTED); |
879 |
} |
880 |
|
881 |
void qmp_guest_suspend_ram(Error **err)
|
882 |
{ |
883 |
error_set(err, QERR_UNSUPPORTED); |
884 |
} |
885 |
|
886 |
void qmp_guest_suspend_hybrid(Error **err)
|
887 |
{ |
888 |
error_set(err, QERR_UNSUPPORTED); |
889 |
} |
890 |
|
891 |
GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) |
892 |
{ |
893 |
error_set(errp, QERR_UNSUPPORTED); |
894 |
return NULL; |
895 |
} |
896 |
|
897 |
#endif
|
898 |
|
899 |
#if !defined(CONFIG_FSFREEZE)
|
900 |
|
901 |
GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err) |
902 |
{ |
903 |
error_set(err, QERR_UNSUPPORTED); |
904 |
|
905 |
return 0; |
906 |
} |
907 |
|
908 |
int64_t qmp_guest_fsfreeze_freeze(Error **err) |
909 |
{ |
910 |
error_set(err, QERR_UNSUPPORTED); |
911 |
|
912 |
return 0; |
913 |
} |
914 |
|
915 |
int64_t qmp_guest_fsfreeze_thaw(Error **err) |
916 |
{ |
917 |
error_set(err, QERR_UNSUPPORTED); |
918 |
|
919 |
return 0; |
920 |
} |
921 |
|
922 |
#endif
|
923 |
|
924 |
/* register init/cleanup routines for stateful command groups */
|
925 |
void ga_command_state_init(GAState *s, GACommandState *cs)
|
926 |
{ |
927 |
#if defined(CONFIG_FSFREEZE)
|
928 |
ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
|
929 |
#endif
|
930 |
ga_command_state_add(cs, guest_file_init, NULL);
|
931 |
} |