3674838cd0
POSIX mandates[1] that a child process of a multi-thread program uses only async-signal-safe functions before exec(). We consider qemu-ga to be multi-thread, because it uses glib. However, qmp_guest_shutdown() uses functions that are not async-signal-safe. Fix it the following way: - fclose() -> reopen_fd_to_null() - execl() -> execle() - exit() -> _exit() - drop slog() usage (which is not safe) [1] http://pubs.opengroup.org/onlinepubs/009695399/functions/fork.html Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
923 lines
24 KiB
C
923 lines
24 KiB
C
/*
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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 "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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#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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#include <sys/wait.h>
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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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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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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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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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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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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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static struct {
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QTAILQ_HEAD(, GuestFileHandle) filehandles;
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} guest_file_state;
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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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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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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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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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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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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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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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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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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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}
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g_free(buf);
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clearerr(fh);
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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;
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}
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fh = gfh->fh;
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ret = fseek(fh, offset, whence);
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if (ret == -1) {
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error_set(err, QERR_QGA_COMMAND_FAILED, strerror(errno));
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} else {
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seek_data = g_malloc0(sizeof(GuestFileRead));
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seek_data->position = ftell(fh);
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seek_data->eof = feof(fh);
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}
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clearerr(fh);
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return seek_data;
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}
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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);
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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;
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}
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fh = gfh->fh;
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ret = fflush(fh);
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if (ret == EOF) {
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error_set(err, QERR_QGA_COMMAND_FAILED, strerror(errno));
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}
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}
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static void guest_file_init(void)
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{
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QTAILQ_INIT(&guest_file_state.filehandles);
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}
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/* linux-specific implementations. avoid this if at all possible. */
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#if defined(__linux__)
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#if defined(CONFIG_FSFREEZE)
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typedef struct GuestFsfreezeMount {
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char *dirname;
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char *devtype;
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QTAILQ_ENTRY(GuestFsfreezeMount) next;
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} GuestFsfreezeMount;
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typedef QTAILQ_HEAD(, GuestFsfreezeMount) GuestFsfreezeMountList;
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static void guest_fsfreeze_free_mount_list(GuestFsfreezeMountList *mounts)
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{
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GuestFsfreezeMount *mount, *temp;
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if (!mounts) {
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return;
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}
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QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) {
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QTAILQ_REMOVE(mounts, mount, next);
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g_free(mount->dirname);
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g_free(mount->devtype);
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g_free(mount);
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}
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}
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/*
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* Walk the mount table and build a list of local file systems
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*/
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static int guest_fsfreeze_build_mount_list(GuestFsfreezeMountList *mounts)
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{
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struct mntent *ment;
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GuestFsfreezeMount *mount;
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char const *mtab = MOUNTED;
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FILE *fp;
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fp = setmntent(mtab, "r");
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if (!fp) {
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g_warning("fsfreeze: unable to read mtab");
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return -1;
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}
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while ((ment = getmntent(fp))) {
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/*
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* An entry which device name doesn't start with a '/' is
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* either a dummy file system or a network file system.
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* Add special handling for smbfs and cifs as is done by
|
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* coreutils as well.
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*/
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if ((ment->mnt_fsname[0] != '/') ||
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(strcmp(ment->mnt_type, "smbfs") == 0) ||
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(strcmp(ment->mnt_type, "cifs") == 0)) {
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continue;
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}
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mount = g_malloc0(sizeof(GuestFsfreezeMount));
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mount->dirname = g_strdup(ment->mnt_dir);
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mount->devtype = g_strdup(ment->mnt_type);
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QTAILQ_INSERT_TAIL(mounts, mount, next);
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}
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endmntent(fp);
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return 0;
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}
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|
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/*
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* Return status of freeze/thaw
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*/
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GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err)
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{
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if (ga_is_frozen(ga_state)) {
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return GUEST_FSFREEZE_STATUS_FROZEN;
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}
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return GUEST_FSFREEZE_STATUS_THAWED;
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}
|
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|
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/*
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* Walk list of mounted file systems in the guest, and freeze the ones which
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* are real local file systems.
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*/
|
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int64_t qmp_guest_fsfreeze_freeze(Error **err)
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{
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int ret = 0, i = 0;
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GuestFsfreezeMountList mounts;
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struct GuestFsfreezeMount *mount;
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int fd;
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char err_msg[512];
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slog("guest-fsfreeze called");
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QTAILQ_INIT(&mounts);
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ret = guest_fsfreeze_build_mount_list(&mounts);
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if (ret < 0) {
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return ret;
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}
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|
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/* cannot risk guest agent blocking itself on a write in this state */
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ga_set_frozen(ga_state);
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QTAILQ_FOREACH(mount, &mounts, next) {
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fd = qemu_open(mount->dirname, O_RDONLY);
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if (fd == -1) {
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sprintf(err_msg, "failed to open %s, %s", mount->dirname,
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strerror(errno));
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error_set(err, QERR_QGA_COMMAND_FAILED, err_msg);
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goto error;
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}
|
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|
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/* we try to cull filesytems we know won't work in advance, but other
|
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* filesytems may not implement fsfreeze for less obvious reasons.
|
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* these will report EOPNOTSUPP. we simply ignore these when tallying
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* the number of frozen filesystems.
|
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*
|
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* any other error means a failure to freeze a filesystem we
|
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* expect to be freezable, so return an error in those cases
|
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* and return system to thawed state.
|
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*/
|
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ret = ioctl(fd, FIFREEZE);
|
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if (ret == -1) {
|
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if (errno != EOPNOTSUPP) {
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sprintf(err_msg, "failed to freeze %s, %s",
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mount->dirname, strerror(errno));
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error_set(err, QERR_QGA_COMMAND_FAILED, err_msg);
|
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close(fd);
|
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goto error;
|
|
}
|
|
} else {
|
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i++;
|
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}
|
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close(fd);
|
|
}
|
|
|
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guest_fsfreeze_free_mount_list(&mounts);
|
|
return i;
|
|
|
|
error:
|
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guest_fsfreeze_free_mount_list(&mounts);
|
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qmp_guest_fsfreeze_thaw(NULL);
|
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return 0;
|
|
}
|
|
|
|
/*
|
|
* Walk list of frozen file systems in the guest, and thaw them.
|
|
*/
|
|
int64_t qmp_guest_fsfreeze_thaw(Error **err)
|
|
{
|
|
int ret;
|
|
GuestFsfreezeMountList mounts;
|
|
GuestFsfreezeMount *mount;
|
|
int fd, i = 0, logged;
|
|
|
|
QTAILQ_INIT(&mounts);
|
|
ret = guest_fsfreeze_build_mount_list(&mounts);
|
|
if (ret) {
|
|
error_set(err, QERR_QGA_COMMAND_FAILED,
|
|
"failed to enumerate filesystems");
|
|
return 0;
|
|
}
|
|
|
|
QTAILQ_FOREACH(mount, &mounts, next) {
|
|
logged = false;
|
|
fd = qemu_open(mount->dirname, O_RDONLY);
|
|
if (fd == -1) {
|
|
continue;
|
|
}
|
|
/* we have no way of knowing whether a filesystem was actually unfrozen
|
|
* as a result of a successful call to FITHAW, only that if an error
|
|
* was returned the filesystem was *not* unfrozen by that particular
|
|
* call.
|
|
*
|
|
* since multiple preceding FIFREEZEs require multiple calls to FITHAW
|
|
* to unfreeze, continuing issuing FITHAW until an error is returned,
|
|
* in which case either the filesystem is in an unfreezable state, or,
|
|
* more likely, it was thawed previously (and remains so afterward).
|
|
*
|
|
* also, since the most recent successful call is the one that did
|
|
* the actual unfreeze, we can use this to provide an accurate count
|
|
* of the number of filesystems unfrozen by guest-fsfreeze-thaw, which
|
|
* may * be useful for determining whether a filesystem was unfrozen
|
|
* during the freeze/thaw phase by a process other than qemu-ga.
|
|
*/
|
|
do {
|
|
ret = ioctl(fd, FITHAW);
|
|
if (ret == 0 && !logged) {
|
|
i++;
|
|
logged = true;
|
|
}
|
|
} while (ret == 0);
|
|
close(fd);
|
|
}
|
|
|
|
ga_unset_frozen(ga_state);
|
|
guest_fsfreeze_free_mount_list(&mounts);
|
|
return i;
|
|
}
|
|
|
|
static void guest_fsfreeze_cleanup(void)
|
|
{
|
|
int64_t ret;
|
|
Error *err = NULL;
|
|
|
|
if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
|
|
ret = qmp_guest_fsfreeze_thaw(&err);
|
|
if (ret < 0 || err) {
|
|
slog("failed to clean up frozen filesystems");
|
|
}
|
|
}
|
|
}
|
|
#endif /* CONFIG_FSFREEZE */
|
|
|
|
#define LINUX_SYS_STATE_FILE "/sys/power/state"
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#define SUSPEND_SUPPORTED 0
|
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#define SUSPEND_NOT_SUPPORTED 1
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|
|
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static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg,
|
|
const char *sysfile_str, Error **err)
|
|
{
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char *pmutils_path;
|
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pid_t pid, rpid;
|
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int status;
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|
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pmutils_path = g_find_program_in_path(pmutils_bin);
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|
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pid = fork();
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if (!pid) {
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char buf[32]; /* hopefully big enough */
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ssize_t ret;
|
|
int fd;
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|
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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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if (pmutils_path) {
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execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ);
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}
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|
/*
|
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* If we get here either pm-utils is not installed or execle() has
|
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* failed. Let's try the manual method if the caller wants it.
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*/
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if (!sysfile_str) {
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_exit(SUSPEND_NOT_SUPPORTED);
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}
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fd = open(LINUX_SYS_STATE_FILE, O_RDONLY);
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if (fd < 0) {
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_exit(SUSPEND_NOT_SUPPORTED);
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}
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ret = read(fd, buf, sizeof(buf)-1);
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|
if (ret <= 0) {
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_exit(SUSPEND_NOT_SUPPORTED);
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}
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buf[ret] = '\0';
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if (strstr(buf, sysfile_str)) {
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_exit(SUSPEND_SUPPORTED);
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}
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|
_exit(SUSPEND_NOT_SUPPORTED);
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|
}
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|
|
g_free(pmutils_path);
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if (pid < 0) {
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goto undef_err;
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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)) {
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switch (WEXITSTATUS(status)) {
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case SUSPEND_SUPPORTED:
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return;
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case SUSPEND_NOT_SUPPORTED:
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error_set(err, QERR_UNSUPPORTED);
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return;
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default:
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goto undef_err;
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}
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}
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undef_err:
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error_set(err, QERR_UNDEFINED_ERROR);
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}
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static void guest_suspend(const char *pmutils_bin, const char *sysfile_str,
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Error **err)
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{
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char *pmutils_path;
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pid_t rpid, pid;
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int status;
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pmutils_path = g_find_program_in_path(pmutils_bin);
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pid = fork();
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if (pid == 0) {
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/* child */
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int fd;
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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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if (pmutils_path) {
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execle(pmutils_path, pmutils_bin, NULL, environ);
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}
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/*
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* If we get here either pm-utils is not installed or execle() has
|
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* failed. Let's try the manual method if the caller wants it.
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*/
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if (!sysfile_str) {
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_exit(EXIT_FAILURE);
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}
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fd = open(LINUX_SYS_STATE_FILE, O_WRONLY);
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if (fd < 0) {
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_exit(EXIT_FAILURE);
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}
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if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) {
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_exit(EXIT_FAILURE);
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}
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|
|
_exit(EXIT_SUCCESS);
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|
}
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g_free(pmutils_path);
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|
if (pid < 0) {
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|
goto exit_err;
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}
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|
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|
do {
|
|
rpid = waitpid(pid, &status, 0);
|
|
} while (rpid == -1 && errno == EINTR);
|
|
if (rpid == pid && WIFEXITED(status) && !WEXITSTATUS(status)) {
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|
return;
|
|
}
|
|
|
|
exit_err:
|
|
error_set(err, QERR_UNDEFINED_ERROR);
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|
}
|
|
|
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void qmp_guest_suspend_disk(Error **err)
|
|
{
|
|
bios_supports_mode("pm-is-supported", "--hibernate", "disk", err);
|
|
if (error_is_set(err)) {
|
|
return;
|
|
}
|
|
|
|
guest_suspend("pm-hibernate", "disk", err);
|
|
}
|
|
|
|
void qmp_guest_suspend_ram(Error **err)
|
|
{
|
|
bios_supports_mode("pm-is-supported", "--suspend", "mem", err);
|
|
if (error_is_set(err)) {
|
|
return;
|
|
}
|
|
|
|
guest_suspend("pm-suspend", "mem", err);
|
|
}
|
|
|
|
void qmp_guest_suspend_hybrid(Error **err)
|
|
{
|
|
bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, err);
|
|
if (error_is_set(err)) {
|
|
return;
|
|
}
|
|
|
|
guest_suspend("pm-suspend-hybrid", NULL, err);
|
|
}
|
|
|
|
static GuestNetworkInterfaceList *
|
|
guest_find_interface(GuestNetworkInterfaceList *head,
|
|
const char *name)
|
|
{
|
|
for (; head; head = head->next) {
|
|
if (strcmp(head->value->name, name) == 0) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return head;
|
|
}
|
|
|
|
/*
|
|
* Build information about guest interfaces
|
|
*/
|
|
GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
|
|
{
|
|
GuestNetworkInterfaceList *head = NULL, *cur_item = NULL;
|
|
struct ifaddrs *ifap, *ifa;
|
|
char err_msg[512];
|
|
|
|
if (getifaddrs(&ifap) < 0) {
|
|
snprintf(err_msg, sizeof(err_msg),
|
|
"getifaddrs failed: %s", strerror(errno));
|
|
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg);
|
|
goto error;
|
|
}
|
|
|
|
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
|
GuestNetworkInterfaceList *info;
|
|
GuestIpAddressList **address_list = NULL, *address_item = NULL;
|
|
char addr4[INET_ADDRSTRLEN];
|
|
char addr6[INET6_ADDRSTRLEN];
|
|
int sock;
|
|
struct ifreq ifr;
|
|
unsigned char *mac_addr;
|
|
void *p;
|
|
|
|
g_debug("Processing %s interface", ifa->ifa_name);
|
|
|
|
info = guest_find_interface(head, ifa->ifa_name);
|
|
|
|
if (!info) {
|
|
info = g_malloc0(sizeof(*info));
|
|
info->value = g_malloc0(sizeof(*info->value));
|
|
info->value->name = g_strdup(ifa->ifa_name);
|
|
|
|
if (!cur_item) {
|
|
head = cur_item = info;
|
|
} else {
|
|
cur_item->next = info;
|
|
cur_item = info;
|
|
}
|
|
}
|
|
|
|
if (!info->value->has_hardware_address &&
|
|
ifa->ifa_flags & SIOCGIFHWADDR) {
|
|
/* we haven't obtained HW address yet */
|
|
sock = socket(PF_INET, SOCK_STREAM, 0);
|
|
if (sock == -1) {
|
|
snprintf(err_msg, sizeof(err_msg),
|
|
"failed to create socket: %s", strerror(errno));
|
|
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg);
|
|
goto error;
|
|
}
|
|
|
|
memset(&ifr, 0, sizeof(ifr));
|
|
strncpy(ifr.ifr_name, info->value->name, IF_NAMESIZE);
|
|
if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) {
|
|
snprintf(err_msg, sizeof(err_msg),
|
|
"failed to get MAC address of %s: %s",
|
|
ifa->ifa_name,
|
|
strerror(errno));
|
|
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg);
|
|
goto error;
|
|
}
|
|
|
|
mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data;
|
|
|
|
if (asprintf(&info->value->hardware_address,
|
|
"%02x:%02x:%02x:%02x:%02x:%02x",
|
|
(int) mac_addr[0], (int) mac_addr[1],
|
|
(int) mac_addr[2], (int) mac_addr[3],
|
|
(int) mac_addr[4], (int) mac_addr[5]) == -1) {
|
|
snprintf(err_msg, sizeof(err_msg),
|
|
"failed to format MAC: %s", strerror(errno));
|
|
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg);
|
|
goto error;
|
|
}
|
|
|
|
info->value->has_hardware_address = true;
|
|
close(sock);
|
|
}
|
|
|
|
if (ifa->ifa_addr &&
|
|
ifa->ifa_addr->sa_family == AF_INET) {
|
|
/* interface with IPv4 address */
|
|
address_item = g_malloc0(sizeof(*address_item));
|
|
address_item->value = g_malloc0(sizeof(*address_item->value));
|
|
p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr;
|
|
if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) {
|
|
snprintf(err_msg, sizeof(err_msg),
|
|
"inet_ntop failed : %s", strerror(errno));
|
|
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg);
|
|
goto error;
|
|
}
|
|
|
|
address_item->value->ip_address = g_strdup(addr4);
|
|
address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4;
|
|
|
|
if (ifa->ifa_netmask) {
|
|
/* Count the number of set bits in netmask.
|
|
* This is safe as '1' and '0' cannot be shuffled in netmask. */
|
|
p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr;
|
|
address_item->value->prefix = ctpop32(((uint32_t *) p)[0]);
|
|
}
|
|
} else if (ifa->ifa_addr &&
|
|
ifa->ifa_addr->sa_family == AF_INET6) {
|
|
/* interface with IPv6 address */
|
|
address_item = g_malloc0(sizeof(*address_item));
|
|
address_item->value = g_malloc0(sizeof(*address_item->value));
|
|
p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
|
|
if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) {
|
|
snprintf(err_msg, sizeof(err_msg),
|
|
"inet_ntop failed : %s", strerror(errno));
|
|
error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg);
|
|
goto error;
|
|
}
|
|
|
|
address_item->value->ip_address = g_strdup(addr6);
|
|
address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6;
|
|
|
|
if (ifa->ifa_netmask) {
|
|
/* Count the number of set bits in netmask.
|
|
* This is safe as '1' and '0' cannot be shuffled in netmask. */
|
|
p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr;
|
|
address_item->value->prefix =
|
|
ctpop32(((uint32_t *) p)[0]) +
|
|
ctpop32(((uint32_t *) p)[1]) +
|
|
ctpop32(((uint32_t *) p)[2]) +
|
|
ctpop32(((uint32_t *) p)[3]);
|
|
}
|
|
}
|
|
|
|
if (!address_item) {
|
|
continue;
|
|
}
|
|
|
|
address_list = &info->value->ip_addresses;
|
|
|
|
while (*address_list && (*address_list)->next) {
|
|
address_list = &(*address_list)->next;
|
|
}
|
|
|
|
if (!*address_list) {
|
|
*address_list = address_item;
|
|
} else {
|
|
(*address_list)->next = address_item;
|
|
}
|
|
|
|
info->value->has_ip_addresses = true;
|
|
|
|
|
|
}
|
|
|
|
freeifaddrs(ifap);
|
|
return head;
|
|
|
|
error:
|
|
freeifaddrs(ifap);
|
|
qapi_free_GuestNetworkInterfaceList(head);
|
|
return NULL;
|
|
}
|
|
|
|
#else /* defined(__linux__) */
|
|
|
|
void qmp_guest_suspend_disk(Error **err)
|
|
{
|
|
error_set(err, QERR_UNSUPPORTED);
|
|
}
|
|
|
|
void qmp_guest_suspend_ram(Error **err)
|
|
{
|
|
error_set(err, QERR_UNSUPPORTED);
|
|
}
|
|
|
|
void qmp_guest_suspend_hybrid(Error **err)
|
|
{
|
|
error_set(err, QERR_UNSUPPORTED);
|
|
}
|
|
|
|
GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
|
|
{
|
|
error_set(errp, QERR_UNSUPPORTED);
|
|
return NULL;
|
|
}
|
|
|
|
#endif
|
|
|
|
#if !defined(CONFIG_FSFREEZE)
|
|
|
|
GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err)
|
|
{
|
|
error_set(err, QERR_UNSUPPORTED);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int64_t qmp_guest_fsfreeze_freeze(Error **err)
|
|
{
|
|
error_set(err, QERR_UNSUPPORTED);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int64_t qmp_guest_fsfreeze_thaw(Error **err)
|
|
{
|
|
error_set(err, QERR_UNSUPPORTED);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* register init/cleanup routines for stateful command groups */
|
|
void ga_command_state_init(GAState *s, GACommandState *cs)
|
|
{
|
|
#if defined(CONFIG_FSFREEZE)
|
|
ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
|
|
#endif
|
|
ga_command_state_add(cs, guest_file_init, NULL);
|
|
}
|