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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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#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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#ifdef FIFREEZE
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#define CONFIG_FSFREEZE
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#endif
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#ifdef FITRIM
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#define CONFIG_FSTRIM
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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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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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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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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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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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} |
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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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} |
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|
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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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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); |
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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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} |
259 |
g_free(buf); |
260 |
clearerr(fh); |
261 |
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return write_data;
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} |
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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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if (!gfh) {
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error_set(err, QERR_FD_NOT_FOUND, "handle");
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return NULL; |
276 |
} |
277 |
|
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fh = gfh->fh; |
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ret = fseek(fh, offset, whence); |
280 |
if (ret == -1) { |
281 |
error_set(err, QERR_QGA_COMMAND_FAILED, strerror(errno)); |
282 |
} else {
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seek_data = g_malloc0(sizeof(GuestFileRead));
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seek_data->position = ftell(fh); |
285 |
seek_data->eof = feof(fh); |
286 |
} |
287 |
clearerr(fh); |
288 |
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return seek_data;
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} |
291 |
|
292 |
void qmp_guest_file_flush(int64_t handle, Error **err)
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293 |
{ |
294 |
GuestFileHandle *gfh = guest_file_handle_find(handle); |
295 |
FILE *fh; |
296 |
int ret;
|
297 |
|
298 |
if (!gfh) {
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299 |
error_set(err, QERR_FD_NOT_FOUND, "handle");
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return;
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301 |
} |
302 |
|
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fh = gfh->fh; |
304 |
ret = fflush(fh); |
305 |
if (ret == EOF) { |
306 |
error_set(err, QERR_QGA_COMMAND_FAILED, strerror(errno)); |
307 |
} |
308 |
} |
309 |
|
310 |
static void guest_file_init(void) |
311 |
{ |
312 |
QTAILQ_INIT(&guest_file_state.filehandles); |
313 |
} |
314 |
|
315 |
/* linux-specific implementations. avoid this if at all possible. */
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316 |
#if defined(__linux__)
|
317 |
|
318 |
#if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM)
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319 |
typedef struct FsMount { |
320 |
char *dirname;
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321 |
char *devtype;
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322 |
QTAILQ_ENTRY(FsMount) next; |
323 |
} FsMount; |
324 |
|
325 |
typedef QTAILQ_HEAD(, FsMount) FsMountList;
|
326 |
|
327 |
static void free_fs_mount_list(FsMountList *mounts) |
328 |
{ |
329 |
FsMount *mount, *temp; |
330 |
|
331 |
if (!mounts) {
|
332 |
return;
|
333 |
} |
334 |
|
335 |
QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { |
336 |
QTAILQ_REMOVE(mounts, mount, next); |
337 |
g_free(mount->dirname); |
338 |
g_free(mount->devtype); |
339 |
g_free(mount); |
340 |
} |
341 |
} |
342 |
|
343 |
/*
|
344 |
* Walk the mount table and build a list of local file systems
|
345 |
*/
|
346 |
static int build_fs_mount_list(FsMountList *mounts) |
347 |
{ |
348 |
struct mntent *ment;
|
349 |
FsMount *mount; |
350 |
char const *mtab = "/proc/self/mounts"; |
351 |
FILE *fp; |
352 |
|
353 |
fp = setmntent(mtab, "r");
|
354 |
if (!fp) {
|
355 |
g_warning("fsfreeze: unable to read mtab");
|
356 |
return -1; |
357 |
} |
358 |
|
359 |
while ((ment = getmntent(fp))) {
|
360 |
/*
|
361 |
* An entry which device name doesn't start with a '/' is
|
362 |
* either a dummy file system or a network file system.
|
363 |
* Add special handling for smbfs and cifs as is done by
|
364 |
* coreutils as well.
|
365 |
*/
|
366 |
if ((ment->mnt_fsname[0] != '/') || |
367 |
(strcmp(ment->mnt_type, "smbfs") == 0) || |
368 |
(strcmp(ment->mnt_type, "cifs") == 0)) { |
369 |
continue;
|
370 |
} |
371 |
|
372 |
mount = g_malloc0(sizeof(FsMount));
|
373 |
mount->dirname = g_strdup(ment->mnt_dir); |
374 |
mount->devtype = g_strdup(ment->mnt_type); |
375 |
|
376 |
QTAILQ_INSERT_TAIL(mounts, mount, next); |
377 |
} |
378 |
|
379 |
endmntent(fp); |
380 |
|
381 |
return 0; |
382 |
} |
383 |
#endif
|
384 |
|
385 |
#if defined(CONFIG_FSFREEZE)
|
386 |
|
387 |
/*
|
388 |
* Return status of freeze/thaw
|
389 |
*/
|
390 |
GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err) |
391 |
{ |
392 |
if (ga_is_frozen(ga_state)) {
|
393 |
return GUEST_FSFREEZE_STATUS_FROZEN;
|
394 |
} |
395 |
|
396 |
return GUEST_FSFREEZE_STATUS_THAWED;
|
397 |
} |
398 |
|
399 |
/*
|
400 |
* Walk list of mounted file systems in the guest, and freeze the ones which
|
401 |
* are real local file systems.
|
402 |
*/
|
403 |
int64_t qmp_guest_fsfreeze_freeze(Error **err) |
404 |
{ |
405 |
int ret = 0, i = 0; |
406 |
FsMountList mounts; |
407 |
struct FsMount *mount;
|
408 |
int fd;
|
409 |
char err_msg[512]; |
410 |
|
411 |
slog("guest-fsfreeze called");
|
412 |
|
413 |
QTAILQ_INIT(&mounts); |
414 |
ret = build_fs_mount_list(&mounts); |
415 |
if (ret < 0) { |
416 |
return ret;
|
417 |
} |
418 |
|
419 |
/* cannot risk guest agent blocking itself on a write in this state */
|
420 |
ga_set_frozen(ga_state); |
421 |
|
422 |
QTAILQ_FOREACH(mount, &mounts, next) { |
423 |
fd = qemu_open(mount->dirname, O_RDONLY); |
424 |
if (fd == -1) { |
425 |
sprintf(err_msg, "failed to open %s, %s", mount->dirname,
|
426 |
strerror(errno)); |
427 |
error_set(err, QERR_QGA_COMMAND_FAILED, err_msg); |
428 |
goto error;
|
429 |
} |
430 |
|
431 |
/* we try to cull filesytems we know won't work in advance, but other
|
432 |
* filesytems may not implement fsfreeze for less obvious reasons.
|
433 |
* these will report EOPNOTSUPP. we simply ignore these when tallying
|
434 |
* the number of frozen filesystems.
|
435 |
*
|
436 |
* any other error means a failure to freeze a filesystem we
|
437 |
* expect to be freezable, so return an error in those cases
|
438 |
* and return system to thawed state.
|
439 |
*/
|
440 |
ret = ioctl(fd, FIFREEZE); |
441 |
if (ret == -1) { |
442 |
if (errno != EOPNOTSUPP) {
|
443 |
sprintf(err_msg, "failed to freeze %s, %s",
|
444 |
mount->dirname, strerror(errno)); |
445 |
error_set(err, QERR_QGA_COMMAND_FAILED, err_msg); |
446 |
close(fd); |
447 |
goto error;
|
448 |
} |
449 |
} else {
|
450 |
i++; |
451 |
} |
452 |
close(fd); |
453 |
} |
454 |
|
455 |
free_fs_mount_list(&mounts); |
456 |
return i;
|
457 |
|
458 |
error:
|
459 |
free_fs_mount_list(&mounts); |
460 |
qmp_guest_fsfreeze_thaw(NULL);
|
461 |
return 0; |
462 |
} |
463 |
|
464 |
/*
|
465 |
* Walk list of frozen file systems in the guest, and thaw them.
|
466 |
*/
|
467 |
int64_t qmp_guest_fsfreeze_thaw(Error **err) |
468 |
{ |
469 |
int ret;
|
470 |
FsMountList mounts; |
471 |
FsMount *mount; |
472 |
int fd, i = 0, logged; |
473 |
|
474 |
QTAILQ_INIT(&mounts); |
475 |
ret = build_fs_mount_list(&mounts); |
476 |
if (ret) {
|
477 |
error_set(err, QERR_QGA_COMMAND_FAILED, |
478 |
"failed to enumerate filesystems");
|
479 |
return 0; |
480 |
} |
481 |
|
482 |
QTAILQ_FOREACH(mount, &mounts, next) { |
483 |
logged = false;
|
484 |
fd = qemu_open(mount->dirname, O_RDONLY); |
485 |
if (fd == -1) { |
486 |
continue;
|
487 |
} |
488 |
/* we have no way of knowing whether a filesystem was actually unfrozen
|
489 |
* as a result of a successful call to FITHAW, only that if an error
|
490 |
* was returned the filesystem was *not* unfrozen by that particular
|
491 |
* call.
|
492 |
*
|
493 |
* since multiple preceding FIFREEZEs require multiple calls to FITHAW
|
494 |
* to unfreeze, continuing issuing FITHAW until an error is returned,
|
495 |
* in which case either the filesystem is in an unfreezable state, or,
|
496 |
* more likely, it was thawed previously (and remains so afterward).
|
497 |
*
|
498 |
* also, since the most recent successful call is the one that did
|
499 |
* the actual unfreeze, we can use this to provide an accurate count
|
500 |
* of the number of filesystems unfrozen by guest-fsfreeze-thaw, which
|
501 |
* may * be useful for determining whether a filesystem was unfrozen
|
502 |
* during the freeze/thaw phase by a process other than qemu-ga.
|
503 |
*/
|
504 |
do {
|
505 |
ret = ioctl(fd, FITHAW); |
506 |
if (ret == 0 && !logged) { |
507 |
i++; |
508 |
logged = true;
|
509 |
} |
510 |
} while (ret == 0); |
511 |
close(fd); |
512 |
} |
513 |
|
514 |
ga_unset_frozen(ga_state); |
515 |
free_fs_mount_list(&mounts); |
516 |
return i;
|
517 |
} |
518 |
|
519 |
static void guest_fsfreeze_cleanup(void) |
520 |
{ |
521 |
int64_t ret; |
522 |
Error *err = NULL;
|
523 |
|
524 |
if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
|
525 |
ret = qmp_guest_fsfreeze_thaw(&err); |
526 |
if (ret < 0 || err) { |
527 |
slog("failed to clean up frozen filesystems");
|
528 |
} |
529 |
} |
530 |
} |
531 |
#endif /* CONFIG_FSFREEZE */ |
532 |
|
533 |
#if defined(CONFIG_FSTRIM)
|
534 |
/*
|
535 |
* Walk list of mounted file systems in the guest, and trim them.
|
536 |
*/
|
537 |
void qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **err) |
538 |
{ |
539 |
int ret = 0; |
540 |
FsMountList mounts; |
541 |
struct FsMount *mount;
|
542 |
int fd;
|
543 |
char err_msg[512]; |
544 |
struct fstrim_range r = {
|
545 |
.start = 0,
|
546 |
.len = -1,
|
547 |
.minlen = has_minimum ? minimum : 0,
|
548 |
}; |
549 |
|
550 |
slog("guest-fstrim called");
|
551 |
|
552 |
QTAILQ_INIT(&mounts); |
553 |
ret = build_fs_mount_list(&mounts); |
554 |
if (ret < 0) { |
555 |
return;
|
556 |
} |
557 |
|
558 |
QTAILQ_FOREACH(mount, &mounts, next) { |
559 |
fd = qemu_open(mount->dirname, O_RDONLY); |
560 |
if (fd == -1) { |
561 |
sprintf(err_msg, "failed to open %s, %s", mount->dirname,
|
562 |
strerror(errno)); |
563 |
error_set(err, QERR_QGA_COMMAND_FAILED, err_msg); |
564 |
goto error;
|
565 |
} |
566 |
|
567 |
/* We try to cull filesytems we know won't work in advance, but other
|
568 |
* filesytems may not implement fstrim for less obvious reasons. These
|
569 |
* will report EOPNOTSUPP; we simply ignore these errors. Any other
|
570 |
* error means an unexpected error, so return it in those cases. In
|
571 |
* some other cases ENOTTY will be reported (e.g. CD-ROMs).
|
572 |
*/
|
573 |
ret = ioctl(fd, FITRIM, &r); |
574 |
if (ret == -1) { |
575 |
if (errno != ENOTTY && errno != EOPNOTSUPP) {
|
576 |
sprintf(err_msg, "failed to trim %s, %s",
|
577 |
mount->dirname, strerror(errno)); |
578 |
error_set(err, QERR_QGA_COMMAND_FAILED, err_msg); |
579 |
close(fd); |
580 |
goto error;
|
581 |
} |
582 |
} |
583 |
close(fd); |
584 |
} |
585 |
|
586 |
error:
|
587 |
free_fs_mount_list(&mounts); |
588 |
} |
589 |
#endif /* CONFIG_FSTRIM */ |
590 |
|
591 |
|
592 |
#define LINUX_SYS_STATE_FILE "/sys/power/state" |
593 |
#define SUSPEND_SUPPORTED 0 |
594 |
#define SUSPEND_NOT_SUPPORTED 1 |
595 |
|
596 |
static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg, |
597 |
const char *sysfile_str, Error **err) |
598 |
{ |
599 |
char *pmutils_path;
|
600 |
pid_t pid, rpid; |
601 |
int status;
|
602 |
|
603 |
pmutils_path = g_find_program_in_path(pmutils_bin); |
604 |
|
605 |
pid = fork(); |
606 |
if (!pid) {
|
607 |
char buf[32]; /* hopefully big enough */ |
608 |
ssize_t ret; |
609 |
int fd;
|
610 |
|
611 |
setsid(); |
612 |
reopen_fd_to_null(0);
|
613 |
reopen_fd_to_null(1);
|
614 |
reopen_fd_to_null(2);
|
615 |
|
616 |
if (pmutils_path) {
|
617 |
execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ);
|
618 |
} |
619 |
|
620 |
/*
|
621 |
* If we get here either pm-utils is not installed or execle() has
|
622 |
* failed. Let's try the manual method if the caller wants it.
|
623 |
*/
|
624 |
|
625 |
if (!sysfile_str) {
|
626 |
_exit(SUSPEND_NOT_SUPPORTED); |
627 |
} |
628 |
|
629 |
fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); |
630 |
if (fd < 0) { |
631 |
_exit(SUSPEND_NOT_SUPPORTED); |
632 |
} |
633 |
|
634 |
ret = read(fd, buf, sizeof(buf)-1); |
635 |
if (ret <= 0) { |
636 |
_exit(SUSPEND_NOT_SUPPORTED); |
637 |
} |
638 |
buf[ret] = '\0';
|
639 |
|
640 |
if (strstr(buf, sysfile_str)) {
|
641 |
_exit(SUSPEND_SUPPORTED); |
642 |
} |
643 |
|
644 |
_exit(SUSPEND_NOT_SUPPORTED); |
645 |
} |
646 |
|
647 |
g_free(pmutils_path); |
648 |
|
649 |
if (pid < 0) { |
650 |
goto undef_err;
|
651 |
} |
652 |
|
653 |
do {
|
654 |
rpid = waitpid(pid, &status, 0);
|
655 |
} while (rpid == -1 && errno == EINTR); |
656 |
if (rpid == pid && WIFEXITED(status)) {
|
657 |
switch (WEXITSTATUS(status)) {
|
658 |
case SUSPEND_SUPPORTED:
|
659 |
return;
|
660 |
case SUSPEND_NOT_SUPPORTED:
|
661 |
error_set(err, QERR_UNSUPPORTED); |
662 |
return;
|
663 |
default:
|
664 |
goto undef_err;
|
665 |
} |
666 |
} |
667 |
|
668 |
undef_err:
|
669 |
error_set(err, QERR_UNDEFINED_ERROR); |
670 |
} |
671 |
|
672 |
static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, |
673 |
Error **err) |
674 |
{ |
675 |
char *pmutils_path;
|
676 |
pid_t rpid, pid; |
677 |
int status;
|
678 |
|
679 |
pmutils_path = g_find_program_in_path(pmutils_bin); |
680 |
|
681 |
pid = fork(); |
682 |
if (pid == 0) { |
683 |
/* child */
|
684 |
int fd;
|
685 |
|
686 |
setsid(); |
687 |
reopen_fd_to_null(0);
|
688 |
reopen_fd_to_null(1);
|
689 |
reopen_fd_to_null(2);
|
690 |
|
691 |
if (pmutils_path) {
|
692 |
execle(pmutils_path, pmutils_bin, NULL, environ);
|
693 |
} |
694 |
|
695 |
/*
|
696 |
* If we get here either pm-utils is not installed or execle() has
|
697 |
* failed. Let's try the manual method if the caller wants it.
|
698 |
*/
|
699 |
|
700 |
if (!sysfile_str) {
|
701 |
_exit(EXIT_FAILURE); |
702 |
} |
703 |
|
704 |
fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); |
705 |
if (fd < 0) { |
706 |
_exit(EXIT_FAILURE); |
707 |
} |
708 |
|
709 |
if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { |
710 |
_exit(EXIT_FAILURE); |
711 |
} |
712 |
|
713 |
_exit(EXIT_SUCCESS); |
714 |
} |
715 |
|
716 |
g_free(pmutils_path); |
717 |
|
718 |
if (pid < 0) { |
719 |
goto exit_err;
|
720 |
} |
721 |
|
722 |
do {
|
723 |
rpid = waitpid(pid, &status, 0);
|
724 |
} while (rpid == -1 && errno == EINTR); |
725 |
if (rpid == pid && WIFEXITED(status) && !WEXITSTATUS(status)) {
|
726 |
return;
|
727 |
} |
728 |
|
729 |
exit_err:
|
730 |
error_set(err, QERR_UNDEFINED_ERROR); |
731 |
} |
732 |
|
733 |
void qmp_guest_suspend_disk(Error **err)
|
734 |
{ |
735 |
bios_supports_mode("pm-is-supported", "--hibernate", "disk", err); |
736 |
if (error_is_set(err)) {
|
737 |
return;
|
738 |
} |
739 |
|
740 |
guest_suspend("pm-hibernate", "disk", err); |
741 |
} |
742 |
|
743 |
void qmp_guest_suspend_ram(Error **err)
|
744 |
{ |
745 |
bios_supports_mode("pm-is-supported", "--suspend", "mem", err); |
746 |
if (error_is_set(err)) {
|
747 |
return;
|
748 |
} |
749 |
|
750 |
guest_suspend("pm-suspend", "mem", err); |
751 |
} |
752 |
|
753 |
void qmp_guest_suspend_hybrid(Error **err)
|
754 |
{ |
755 |
bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, err); |
756 |
if (error_is_set(err)) {
|
757 |
return;
|
758 |
} |
759 |
|
760 |
guest_suspend("pm-suspend-hybrid", NULL, err); |
761 |
} |
762 |
|
763 |
static GuestNetworkInterfaceList *
|
764 |
guest_find_interface(GuestNetworkInterfaceList *head, |
765 |
const char *name) |
766 |
{ |
767 |
for (; head; head = head->next) {
|
768 |
if (strcmp(head->value->name, name) == 0) { |
769 |
break;
|
770 |
} |
771 |
} |
772 |
|
773 |
return head;
|
774 |
} |
775 |
|
776 |
/*
|
777 |
* Build information about guest interfaces
|
778 |
*/
|
779 |
GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) |
780 |
{ |
781 |
GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; |
782 |
struct ifaddrs *ifap, *ifa;
|
783 |
char err_msg[512]; |
784 |
|
785 |
if (getifaddrs(&ifap) < 0) { |
786 |
snprintf(err_msg, sizeof(err_msg),
|
787 |
"getifaddrs failed: %s", strerror(errno));
|
788 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
789 |
goto error;
|
790 |
} |
791 |
|
792 |
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
793 |
GuestNetworkInterfaceList *info; |
794 |
GuestIpAddressList **address_list = NULL, *address_item = NULL; |
795 |
char addr4[INET_ADDRSTRLEN];
|
796 |
char addr6[INET6_ADDRSTRLEN];
|
797 |
int sock;
|
798 |
struct ifreq ifr;
|
799 |
unsigned char *mac_addr; |
800 |
void *p;
|
801 |
|
802 |
g_debug("Processing %s interface", ifa->ifa_name);
|
803 |
|
804 |
info = guest_find_interface(head, ifa->ifa_name); |
805 |
|
806 |
if (!info) {
|
807 |
info = g_malloc0(sizeof(*info));
|
808 |
info->value = g_malloc0(sizeof(*info->value));
|
809 |
info->value->name = g_strdup(ifa->ifa_name); |
810 |
|
811 |
if (!cur_item) {
|
812 |
head = cur_item = info; |
813 |
} else {
|
814 |
cur_item->next = info; |
815 |
cur_item = info; |
816 |
} |
817 |
} |
818 |
|
819 |
if (!info->value->has_hardware_address &&
|
820 |
ifa->ifa_flags & SIOCGIFHWADDR) { |
821 |
/* we haven't obtained HW address yet */
|
822 |
sock = socket(PF_INET, SOCK_STREAM, 0);
|
823 |
if (sock == -1) { |
824 |
snprintf(err_msg, sizeof(err_msg),
|
825 |
"failed to create socket: %s", strerror(errno));
|
826 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
827 |
goto error;
|
828 |
} |
829 |
|
830 |
memset(&ifr, 0, sizeof(ifr)); |
831 |
pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); |
832 |
if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { |
833 |
snprintf(err_msg, sizeof(err_msg),
|
834 |
"failed to get MAC address of %s: %s",
|
835 |
ifa->ifa_name, |
836 |
strerror(errno)); |
837 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
838 |
goto error;
|
839 |
} |
840 |
|
841 |
mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; |
842 |
|
843 |
if (asprintf(&info->value->hardware_address,
|
844 |
"%02x:%02x:%02x:%02x:%02x:%02x",
|
845 |
(int) mac_addr[0], (int) mac_addr[1], |
846 |
(int) mac_addr[2], (int) mac_addr[3], |
847 |
(int) mac_addr[4], (int) mac_addr[5]) == -1) { |
848 |
snprintf(err_msg, sizeof(err_msg),
|
849 |
"failed to format MAC: %s", strerror(errno));
|
850 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
851 |
goto error;
|
852 |
} |
853 |
|
854 |
info->value->has_hardware_address = true;
|
855 |
close(sock); |
856 |
} |
857 |
|
858 |
if (ifa->ifa_addr &&
|
859 |
ifa->ifa_addr->sa_family == AF_INET) { |
860 |
/* interface with IPv4 address */
|
861 |
address_item = g_malloc0(sizeof(*address_item));
|
862 |
address_item->value = g_malloc0(sizeof(*address_item->value));
|
863 |
p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr;
|
864 |
if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { |
865 |
snprintf(err_msg, sizeof(err_msg),
|
866 |
"inet_ntop failed : %s", strerror(errno));
|
867 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
868 |
goto error;
|
869 |
} |
870 |
|
871 |
address_item->value->ip_address = g_strdup(addr4); |
872 |
address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; |
873 |
|
874 |
if (ifa->ifa_netmask) {
|
875 |
/* Count the number of set bits in netmask.
|
876 |
* This is safe as '1' and '0' cannot be shuffled in netmask. */
|
877 |
p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr;
|
878 |
address_item->value->prefix = ctpop32(((uint32_t *) p)[0]);
|
879 |
} |
880 |
} else if (ifa->ifa_addr && |
881 |
ifa->ifa_addr->sa_family == AF_INET6) { |
882 |
/* interface with IPv6 address */
|
883 |
address_item = g_malloc0(sizeof(*address_item));
|
884 |
address_item->value = g_malloc0(sizeof(*address_item->value));
|
885 |
p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
|
886 |
if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { |
887 |
snprintf(err_msg, sizeof(err_msg),
|
888 |
"inet_ntop failed : %s", strerror(errno));
|
889 |
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); |
890 |
goto error;
|
891 |
} |
892 |
|
893 |
address_item->value->ip_address = g_strdup(addr6); |
894 |
address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; |
895 |
|
896 |
if (ifa->ifa_netmask) {
|
897 |
/* Count the number of set bits in netmask.
|
898 |
* This is safe as '1' and '0' cannot be shuffled in netmask. */
|
899 |
p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr;
|
900 |
address_item->value->prefix = |
901 |
ctpop32(((uint32_t *) p)[0]) +
|
902 |
ctpop32(((uint32_t *) p)[1]) +
|
903 |
ctpop32(((uint32_t *) p)[2]) +
|
904 |
ctpop32(((uint32_t *) p)[3]);
|
905 |
} |
906 |
} |
907 |
|
908 |
if (!address_item) {
|
909 |
continue;
|
910 |
} |
911 |
|
912 |
address_list = &info->value->ip_addresses; |
913 |
|
914 |
while (*address_list && (*address_list)->next) {
|
915 |
address_list = &(*address_list)->next; |
916 |
} |
917 |
|
918 |
if (!*address_list) {
|
919 |
*address_list = address_item; |
920 |
} else {
|
921 |
(*address_list)->next = address_item; |
922 |
} |
923 |
|
924 |
info->value->has_ip_addresses = true;
|
925 |
|
926 |
|
927 |
} |
928 |
|
929 |
freeifaddrs(ifap); |
930 |
return head;
|
931 |
|
932 |
error:
|
933 |
freeifaddrs(ifap); |
934 |
qapi_free_GuestNetworkInterfaceList(head); |
935 |
return NULL; |
936 |
} |
937 |
|
938 |
#else /* defined(__linux__) */ |
939 |
|
940 |
void qmp_guest_suspend_disk(Error **err)
|
941 |
{ |
942 |
error_set(err, QERR_UNSUPPORTED); |
943 |
} |
944 |
|
945 |
void qmp_guest_suspend_ram(Error **err)
|
946 |
{ |
947 |
error_set(err, QERR_UNSUPPORTED); |
948 |
} |
949 |
|
950 |
void qmp_guest_suspend_hybrid(Error **err)
|
951 |
{ |
952 |
error_set(err, QERR_UNSUPPORTED); |
953 |
} |
954 |
|
955 |
GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) |
956 |
{ |
957 |
error_set(errp, QERR_UNSUPPORTED); |
958 |
return NULL; |
959 |
} |
960 |
|
961 |
#endif
|
962 |
|
963 |
#if !defined(CONFIG_FSFREEZE)
|
964 |
|
965 |
GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err) |
966 |
{ |
967 |
error_set(err, QERR_UNSUPPORTED); |
968 |
|
969 |
return 0; |
970 |
} |
971 |
|
972 |
int64_t qmp_guest_fsfreeze_freeze(Error **err) |
973 |
{ |
974 |
error_set(err, QERR_UNSUPPORTED); |
975 |
|
976 |
return 0; |
977 |
} |
978 |
|
979 |
int64_t qmp_guest_fsfreeze_thaw(Error **err) |
980 |
{ |
981 |
error_set(err, QERR_UNSUPPORTED); |
982 |
|
983 |
return 0; |
984 |
} |
985 |
#endif /* CONFIG_FSFREEZE */ |
986 |
|
987 |
#if !defined(CONFIG_FSTRIM)
|
988 |
void qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **err) |
989 |
{ |
990 |
error_set(err, QERR_UNSUPPORTED); |
991 |
|
992 |
return;
|
993 |
} |
994 |
#endif
|
995 |
|
996 |
/* register init/cleanup routines for stateful command groups */
|
997 |
void ga_command_state_init(GAState *s, GACommandState *cs)
|
998 |
{ |
999 |
#if defined(CONFIG_FSFREEZE)
|
1000 |
ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
|
1001 |
#endif
|
1002 |
ga_command_state_add(cs, guest_file_init, NULL);
|
1003 |
} |