2 * QEMU Guest Agent POSIX-specific command implementations
4 * Copyright IBM Corp. 2011
7 * Michael Roth <mdroth@linux.vnet.ibm.com>
8 * Michal Privoznik <mprivozn@redhat.com>
10 * This work is licensed under the terms of the GNU GPL, version 2 or later.
11 * See the COPYING file in the top-level directory.
14 #include "qemu/osdep.h"
15 #include <sys/ioctl.h>
16 #include <sys/utsname.h>
19 #include "qemu-common.h"
20 #include "guest-agent-core.h"
21 #include "qga-qapi-commands.h"
22 #include "qapi/error.h"
23 #include "qapi/qmp/qerror.h"
24 #include "qemu/queue.h"
25 #include "qemu/host-utils.h"
26 #include "qemu/sockets.h"
27 #include "qemu/base64.h"
28 #include "qemu/cutils.h"
34 #ifndef CONFIG_HAS_ENVIRON
36 #include <crt_externs.h>
37 #define environ (*_NSGetEnviron())
39 extern char **environ
;
43 #if defined(__linux__)
47 #include <arpa/inet.h>
48 #include <sys/socket.h>
50 #include <sys/statvfs.h>
57 #define CONFIG_FSFREEZE
64 static void ga_wait_child(pid_t pid
, int *status
, Error
**errp
)
71 rpid
= waitpid(pid
, status
, 0);
72 } while (rpid
== -1 && errno
== EINTR
);
75 error_setg_errno(errp
, errno
, "failed to wait for child (pid: %d)",
80 g_assert(rpid
== pid
);
83 void qmp_guest_shutdown(bool has_mode
, const char *mode
, Error
**errp
)
85 const char *shutdown_flag
;
86 Error
*local_err
= NULL
;
90 slog("guest-shutdown called, mode: %s", mode
);
91 if (!has_mode
|| strcmp(mode
, "powerdown") == 0) {
93 } else if (strcmp(mode
, "halt") == 0) {
95 } else if (strcmp(mode
, "reboot") == 0) {
99 "mode is invalid (valid values are: halt|powerdown|reboot");
105 /* child, start the shutdown */
107 reopen_fd_to_null(0);
108 reopen_fd_to_null(1);
109 reopen_fd_to_null(2);
111 execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag
, "+0",
112 "hypervisor initiated shutdown", (char*)NULL
, environ
);
114 } else if (pid
< 0) {
115 error_setg_errno(errp
, errno
, "failed to create child process");
119 ga_wait_child(pid
, &status
, &local_err
);
121 error_propagate(errp
, local_err
);
125 if (!WIFEXITED(status
)) {
126 error_setg(errp
, "child process has terminated abnormally");
130 if (WEXITSTATUS(status
)) {
131 error_setg(errp
, "child process has failed to shutdown");
138 int64_t qmp_guest_get_time(Error
**errp
)
143 ret
= qemu_gettimeofday(&tq
);
145 error_setg_errno(errp
, errno
, "Failed to get time");
149 return tq
.tv_sec
* 1000000000LL + tq
.tv_usec
* 1000;
152 void qmp_guest_set_time(bool has_time
, int64_t time_ns
, Error
**errp
)
157 Error
*local_err
= NULL
;
159 static const char hwclock_path
[] = "/sbin/hwclock";
160 static int hwclock_available
= -1;
162 if (hwclock_available
< 0) {
163 hwclock_available
= (access(hwclock_path
, X_OK
) == 0);
166 if (!hwclock_available
) {
167 error_setg(errp
, QERR_UNSUPPORTED
);
171 /* If user has passed a time, validate and set it. */
175 /* year-2038 will overflow in case time_t is 32bit */
176 if (time_ns
/ 1000000000 != (time_t)(time_ns
/ 1000000000)) {
177 error_setg(errp
, "Time %" PRId64
" is too large", time_ns
);
181 tv
.tv_sec
= time_ns
/ 1000000000;
182 tv
.tv_usec
= (time_ns
% 1000000000) / 1000;
183 g_date_set_time_t(&date
, tv
.tv_sec
);
184 if (date
.year
< 1970 || date
.year
>= 2070) {
185 error_setg_errno(errp
, errno
, "Invalid time");
189 ret
= settimeofday(&tv
, NULL
);
191 error_setg_errno(errp
, errno
, "Failed to set time to guest");
196 /* Now, if user has passed a time to set and the system time is set, we
197 * just need to synchronize the hardware clock. However, if no time was
198 * passed, user is requesting the opposite: set the system time from the
199 * hardware clock (RTC). */
203 reopen_fd_to_null(0);
204 reopen_fd_to_null(1);
205 reopen_fd_to_null(2);
207 /* Use '/sbin/hwclock -w' to set RTC from the system time,
208 * or '/sbin/hwclock -s' to set the system time from RTC. */
209 execle(hwclock_path
, "hwclock", has_time
? "-w" : "-s",
212 } else if (pid
< 0) {
213 error_setg_errno(errp
, errno
, "failed to create child process");
217 ga_wait_child(pid
, &status
, &local_err
);
219 error_propagate(errp
, local_err
);
223 if (!WIFEXITED(status
)) {
224 error_setg(errp
, "child process has terminated abnormally");
228 if (WEXITSTATUS(status
)) {
229 error_setg(errp
, "hwclock failed to set hardware clock to system time");
240 typedef struct GuestFileHandle
{
244 QTAILQ_ENTRY(GuestFileHandle
) next
;
248 QTAILQ_HEAD(, GuestFileHandle
) filehandles
;
249 } guest_file_state
= {
250 .filehandles
= QTAILQ_HEAD_INITIALIZER(guest_file_state
.filehandles
),
253 static int64_t guest_file_handle_add(FILE *fh
, Error
**errp
)
255 GuestFileHandle
*gfh
;
258 handle
= ga_get_fd_handle(ga_state
, errp
);
263 gfh
= g_new0(GuestFileHandle
, 1);
266 QTAILQ_INSERT_TAIL(&guest_file_state
.filehandles
, gfh
, next
);
271 static GuestFileHandle
*guest_file_handle_find(int64_t id
, Error
**errp
)
273 GuestFileHandle
*gfh
;
275 QTAILQ_FOREACH(gfh
, &guest_file_state
.filehandles
, next
)
282 error_setg(errp
, "handle '%" PRId64
"' has not been found", id
);
286 typedef const char * const ccpc
;
292 /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */
293 static const struct {
296 } guest_file_open_modes
[] = {
297 { (ccpc
[]){ "r", NULL
}, O_RDONLY
},
298 { (ccpc
[]){ "rb", NULL
}, O_RDONLY
| O_BINARY
},
299 { (ccpc
[]){ "w", NULL
}, O_WRONLY
| O_CREAT
| O_TRUNC
},
300 { (ccpc
[]){ "wb", NULL
}, O_WRONLY
| O_CREAT
| O_TRUNC
| O_BINARY
},
301 { (ccpc
[]){ "a", NULL
}, O_WRONLY
| O_CREAT
| O_APPEND
},
302 { (ccpc
[]){ "ab", NULL
}, O_WRONLY
| O_CREAT
| O_APPEND
| O_BINARY
},
303 { (ccpc
[]){ "r+", NULL
}, O_RDWR
},
304 { (ccpc
[]){ "rb+", "r+b", NULL
}, O_RDWR
| O_BINARY
},
305 { (ccpc
[]){ "w+", NULL
}, O_RDWR
| O_CREAT
| O_TRUNC
},
306 { (ccpc
[]){ "wb+", "w+b", NULL
}, O_RDWR
| O_CREAT
| O_TRUNC
| O_BINARY
},
307 { (ccpc
[]){ "a+", NULL
}, O_RDWR
| O_CREAT
| O_APPEND
},
308 { (ccpc
[]){ "ab+", "a+b", NULL
}, O_RDWR
| O_CREAT
| O_APPEND
| O_BINARY
}
312 find_open_flag(const char *mode_str
, Error
**errp
)
316 for (mode
= 0; mode
< ARRAY_SIZE(guest_file_open_modes
); ++mode
) {
319 form
= guest_file_open_modes
[mode
].forms
;
320 while (*form
!= NULL
&& strcmp(*form
, mode_str
) != 0) {
328 if (mode
== ARRAY_SIZE(guest_file_open_modes
)) {
329 error_setg(errp
, "invalid file open mode '%s'", mode_str
);
332 return guest_file_open_modes
[mode
].oflag_base
| O_NOCTTY
| O_NONBLOCK
;
335 #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \
336 S_IRGRP | S_IWGRP | \
340 safe_open_or_create(const char *path
, const char *mode
, Error
**errp
)
342 Error
*local_err
= NULL
;
345 oflag
= find_open_flag(mode
, &local_err
);
346 if (local_err
== NULL
) {
349 /* If the caller wants / allows creation of a new file, we implement it
350 * with a two step process: open() + (open() / fchmod()).
352 * First we insist on creating the file exclusively as a new file. If
353 * that succeeds, we're free to set any file-mode bits on it. (The
354 * motivation is that we want to set those file-mode bits independently
355 * of the current umask.)
357 * If the exclusive creation fails because the file already exists
358 * (EEXIST is not possible for any other reason), we just attempt to
359 * open the file, but in this case we won't be allowed to change the
360 * file-mode bits on the preexistent file.
362 * The pathname should never disappear between the two open()s in
363 * practice. If it happens, then someone very likely tried to race us.
364 * In this case just go ahead and report the ENOENT from the second
365 * open() to the caller.
367 * If the caller wants to open a preexistent file, then the first
368 * open() is decisive and its third argument is ignored, and the second
369 * open() and the fchmod() are never called.
371 fd
= open(path
, oflag
| ((oflag
& O_CREAT
) ? O_EXCL
: 0), 0);
372 if (fd
== -1 && errno
== EEXIST
) {
373 oflag
&= ~(unsigned)O_CREAT
;
374 fd
= open(path
, oflag
);
378 error_setg_errno(&local_err
, errno
, "failed to open file '%s' "
379 "(mode: '%s')", path
, mode
);
381 qemu_set_cloexec(fd
);
383 if ((oflag
& O_CREAT
) && fchmod(fd
, DEFAULT_NEW_FILE_MODE
) == -1) {
384 error_setg_errno(&local_err
, errno
, "failed to set permission "
385 "0%03o on new file '%s' (mode: '%s')",
386 (unsigned)DEFAULT_NEW_FILE_MODE
, path
, mode
);
390 f
= fdopen(fd
, mode
);
392 error_setg_errno(&local_err
, errno
, "failed to associate "
393 "stdio stream with file descriptor %d, "
394 "file '%s' (mode: '%s')", fd
, path
, mode
);
401 if (oflag
& O_CREAT
) {
407 error_propagate(errp
, local_err
);
411 int64_t qmp_guest_file_open(const char *path
, bool has_mode
, const char *mode
,
415 Error
*local_err
= NULL
;
421 slog("guest-file-open called, filepath: %s, mode: %s", path
, mode
);
422 fh
= safe_open_or_create(path
, mode
, &local_err
);
423 if (local_err
!= NULL
) {
424 error_propagate(errp
, local_err
);
428 /* set fd non-blocking to avoid common use cases (like reading from a
429 * named pipe) from hanging the agent
431 qemu_set_nonblock(fileno(fh
));
433 handle
= guest_file_handle_add(fh
, errp
);
439 slog("guest-file-open, handle: %" PRId64
, handle
);
443 void qmp_guest_file_close(int64_t handle
, Error
**errp
)
445 GuestFileHandle
*gfh
= guest_file_handle_find(handle
, errp
);
448 slog("guest-file-close called, handle: %" PRId64
, handle
);
453 ret
= fclose(gfh
->fh
);
455 error_setg_errno(errp
, errno
, "failed to close handle");
459 QTAILQ_REMOVE(&guest_file_state
.filehandles
, gfh
, next
);
463 struct GuestFileRead
*qmp_guest_file_read(int64_t handle
, bool has_count
,
464 int64_t count
, Error
**errp
)
466 GuestFileHandle
*gfh
= guest_file_handle_find(handle
, errp
);
467 GuestFileRead
*read_data
= NULL
;
477 count
= QGA_READ_COUNT_DEFAULT
;
478 } else if (count
< 0 || count
>= UINT32_MAX
) {
479 error_setg(errp
, "value '%" PRId64
"' is invalid for argument count",
486 /* explicitly flush when switching from writing to reading */
487 if (gfh
->state
== RW_STATE_WRITING
) {
488 int ret
= fflush(fh
);
490 error_setg_errno(errp
, errno
, "failed to flush file");
493 gfh
->state
= RW_STATE_NEW
;
496 buf
= g_malloc0(count
+1);
497 read_count
= fread(buf
, 1, count
, fh
);
499 error_setg_errno(errp
, errno
, "failed to read file");
500 slog("guest-file-read failed, handle: %" PRId64
, handle
);
503 read_data
= g_new0(GuestFileRead
, 1);
504 read_data
->count
= read_count
;
505 read_data
->eof
= feof(fh
);
507 read_data
->buf_b64
= g_base64_encode(buf
, read_count
);
509 gfh
->state
= RW_STATE_READING
;
517 GuestFileWrite
*qmp_guest_file_write(int64_t handle
, const char *buf_b64
,
518 bool has_count
, int64_t count
,
521 GuestFileWrite
*write_data
= NULL
;
525 GuestFileHandle
*gfh
= guest_file_handle_find(handle
, errp
);
534 if (gfh
->state
== RW_STATE_READING
) {
535 int ret
= fseek(fh
, 0, SEEK_CUR
);
537 error_setg_errno(errp
, errno
, "failed to seek file");
540 gfh
->state
= RW_STATE_NEW
;
543 buf
= qbase64_decode(buf_b64
, -1, &buf_len
, errp
);
550 } else if (count
< 0 || count
> buf_len
) {
551 error_setg(errp
, "value '%" PRId64
"' is invalid for argument count",
557 write_count
= fwrite(buf
, 1, count
, fh
);
559 error_setg_errno(errp
, errno
, "failed to write to file");
560 slog("guest-file-write failed, handle: %" PRId64
, handle
);
562 write_data
= g_new0(GuestFileWrite
, 1);
563 write_data
->count
= write_count
;
564 write_data
->eof
= feof(fh
);
565 gfh
->state
= RW_STATE_WRITING
;
573 struct GuestFileSeek
*qmp_guest_file_seek(int64_t handle
, int64_t offset
,
574 GuestFileWhence
*whence_code
,
577 GuestFileHandle
*gfh
= guest_file_handle_find(handle
, errp
);
578 GuestFileSeek
*seek_data
= NULL
;
588 /* We stupidly exposed 'whence':'int' in our qapi */
589 whence
= ga_parse_whence(whence_code
, &err
);
591 error_propagate(errp
, err
);
596 ret
= fseek(fh
, offset
, whence
);
598 error_setg_errno(errp
, errno
, "failed to seek file");
599 if (errno
== ESPIPE
) {
600 /* file is non-seekable, stdio shouldn't be buffering anyways */
601 gfh
->state
= RW_STATE_NEW
;
604 seek_data
= g_new0(GuestFileSeek
, 1);
605 seek_data
->position
= ftell(fh
);
606 seek_data
->eof
= feof(fh
);
607 gfh
->state
= RW_STATE_NEW
;
614 void qmp_guest_file_flush(int64_t handle
, Error
**errp
)
616 GuestFileHandle
*gfh
= guest_file_handle_find(handle
, errp
);
627 error_setg_errno(errp
, errno
, "failed to flush file");
629 gfh
->state
= RW_STATE_NEW
;
633 /* linux-specific implementations. avoid this if at all possible. */
634 #if defined(__linux__)
636 #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM)
637 typedef struct FsMount
{
640 unsigned int devmajor
, devminor
;
641 QTAILQ_ENTRY(FsMount
) next
;
644 typedef QTAILQ_HEAD(FsMountList
, FsMount
) FsMountList
;
646 static void free_fs_mount_list(FsMountList
*mounts
)
648 FsMount
*mount
, *temp
;
654 QTAILQ_FOREACH_SAFE(mount
, mounts
, next
, temp
) {
655 QTAILQ_REMOVE(mounts
, mount
, next
);
656 g_free(mount
->dirname
);
657 g_free(mount
->devtype
);
662 static int dev_major_minor(const char *devpath
,
663 unsigned int *devmajor
, unsigned int *devminor
)
670 if (stat(devpath
, &st
) < 0) {
671 slog("failed to stat device file '%s': %s", devpath
, strerror(errno
));
674 if (S_ISDIR(st
.st_mode
)) {
675 /* It is bind mount */
678 if (S_ISBLK(st
.st_mode
)) {
679 *devmajor
= major(st
.st_rdev
);
680 *devminor
= minor(st
.st_rdev
);
687 * Walk the mount table and build a list of local file systems
689 static void build_fs_mount_list_from_mtab(FsMountList
*mounts
, Error
**errp
)
693 char const *mtab
= "/proc/self/mounts";
695 unsigned int devmajor
, devminor
;
697 fp
= setmntent(mtab
, "r");
699 error_setg(errp
, "failed to open mtab file: '%s'", mtab
);
703 while ((ment
= getmntent(fp
))) {
705 * An entry which device name doesn't start with a '/' is
706 * either a dummy file system or a network file system.
707 * Add special handling for smbfs and cifs as is done by
710 if ((ment
->mnt_fsname
[0] != '/') ||
711 (strcmp(ment
->mnt_type
, "smbfs") == 0) ||
712 (strcmp(ment
->mnt_type
, "cifs") == 0)) {
715 if (dev_major_minor(ment
->mnt_fsname
, &devmajor
, &devminor
) == -2) {
716 /* Skip bind mounts */
720 mount
= g_new0(FsMount
, 1);
721 mount
->dirname
= g_strdup(ment
->mnt_dir
);
722 mount
->devtype
= g_strdup(ment
->mnt_type
);
723 mount
->devmajor
= devmajor
;
724 mount
->devminor
= devminor
;
726 QTAILQ_INSERT_TAIL(mounts
, mount
, next
);
732 static void decode_mntname(char *name
, int len
)
735 for (i
= 0; i
<= len
; i
++) {
736 if (name
[i
] != '\\') {
738 } else if (name
[i
+ 1] == '\\') {
741 } else if (name
[i
+ 1] >= '0' && name
[i
+ 1] <= '3' &&
742 name
[i
+ 2] >= '0' && name
[i
+ 2] <= '7' &&
743 name
[i
+ 3] >= '0' && name
[i
+ 3] <= '7') {
744 name
[j
++] = (name
[i
+ 1] - '0') * 64 +
745 (name
[i
+ 2] - '0') * 8 +
754 static void build_fs_mount_list(FsMountList
*mounts
, Error
**errp
)
757 char const *mountinfo
= "/proc/self/mountinfo";
759 char *line
= NULL
, *dash
;
762 unsigned int devmajor
, devminor
;
763 int ret
, dir_s
, dir_e
, type_s
, type_e
, dev_s
, dev_e
;
765 fp
= fopen(mountinfo
, "r");
767 build_fs_mount_list_from_mtab(mounts
, errp
);
771 while (getline(&line
, &n
, fp
) != -1) {
772 ret
= sscanf(line
, "%*u %*u %u:%u %*s %n%*s%n%c",
773 &devmajor
, &devminor
, &dir_s
, &dir_e
, &check
);
777 dash
= strstr(line
+ dir_e
, " - ");
781 ret
= sscanf(dash
, " - %n%*s%n %n%*s%n%c",
782 &type_s
, &type_e
, &dev_s
, &dev_e
, &check
);
789 decode_mntname(line
+ dir_s
, dir_e
- dir_s
);
790 decode_mntname(dash
+ dev_s
, dev_e
- dev_s
);
792 /* btrfs reports major number = 0 */
793 if (strcmp("btrfs", dash
+ type_s
) != 0 ||
794 dev_major_minor(dash
+ dev_s
, &devmajor
, &devminor
) < 0) {
799 mount
= g_new0(FsMount
, 1);
800 mount
->dirname
= g_strdup(line
+ dir_s
);
801 mount
->devtype
= g_strdup(dash
+ type_s
);
802 mount
->devmajor
= devmajor
;
803 mount
->devminor
= devminor
;
805 QTAILQ_INSERT_TAIL(mounts
, mount
, next
);
813 #if defined(CONFIG_FSFREEZE)
815 static char *get_pci_driver(char const *syspath
, int pathlen
, Error
**errp
)
823 path
= g_strndup(syspath
, pathlen
);
824 dpath
= g_strdup_printf("%s/driver", path
);
825 len
= readlink(dpath
, buf
, sizeof(buf
) - 1);
828 driver
= g_path_get_basename(buf
);
835 static int compare_uint(const void *_a
, const void *_b
)
837 unsigned int a
= *(unsigned int *)_a
;
838 unsigned int b
= *(unsigned int *)_b
;
840 return a
< b
? -1 : a
> b
? 1 : 0;
843 /* Walk the specified sysfs and build a sorted list of host or ata numbers */
844 static int build_hosts(char const *syspath
, char const *host
, bool ata
,
845 unsigned int *hosts
, int hosts_max
, Error
**errp
)
849 struct dirent
*entry
;
852 path
= g_strndup(syspath
, host
- syspath
);
855 error_setg_errno(errp
, errno
, "opendir(\"%s\")", path
);
860 while (i
< hosts_max
) {
861 entry
= readdir(dir
);
865 if (ata
&& sscanf(entry
->d_name
, "ata%d", hosts
+ i
) == 1) {
867 } else if (!ata
&& sscanf(entry
->d_name
, "host%d", hosts
+ i
) == 1) {
872 qsort(hosts
, i
, sizeof(hosts
[0]), compare_uint
);
879 /* Store disk device info specified by @sysfs into @fs */
880 static void build_guest_fsinfo_for_real_device(char const *syspath
,
881 GuestFilesystemInfo
*fs
,
884 unsigned int pci
[4], host
, hosts
[8], tgt
[3];
885 int i
, nhosts
= 0, pcilen
;
886 GuestDiskAddress
*disk
;
887 GuestPCIAddress
*pciaddr
;
888 GuestDiskAddressList
*list
= NULL
;
889 bool has_ata
= false, has_host
= false, has_tgt
= false;
890 char *p
, *q
, *driver
= NULL
;
891 #ifdef CONFIG_LIBUDEV
892 struct udev
*udev
= NULL
;
893 struct udev_device
*udevice
= NULL
;
896 p
= strstr(syspath
, "/devices/pci");
897 if (!p
|| sscanf(p
+ 12, "%*x:%*x/%x:%x:%x.%x%n",
898 pci
, pci
+ 1, pci
+ 2, pci
+ 3, &pcilen
) < 4) {
899 g_debug("only pci device is supported: sysfs path '%s'", syspath
);
905 driver
= get_pci_driver(syspath
, p
- syspath
, errp
);
906 if (driver
&& (g_str_equal(driver
, "ata_piix") ||
907 g_str_equal(driver
, "sym53c8xx") ||
908 g_str_equal(driver
, "virtio-pci") ||
909 g_str_equal(driver
, "ahci"))) {
914 if (sscanf(p
, "/%x:%x:%x.%x%n",
915 pci
, pci
+ 1, pci
+ 2, pci
+ 3, &pcilen
) == 4) {
920 g_debug("unsupported driver or sysfs path '%s'", syspath
);
924 p
= strstr(syspath
, "/target");
925 if (p
&& sscanf(p
+ 7, "%*u:%*u:%*u/%*u:%u:%u:%u",
926 tgt
, tgt
+ 1, tgt
+ 2) == 3) {
930 p
= strstr(syspath
, "/ata");
935 p
= strstr(syspath
, "/host");
938 if (p
&& sscanf(q
, "%u", &host
) == 1) {
940 nhosts
= build_hosts(syspath
, p
, has_ata
, hosts
,
941 ARRAY_SIZE(hosts
), errp
);
947 pciaddr
= g_malloc0(sizeof(*pciaddr
));
948 pciaddr
->domain
= pci
[0];
949 pciaddr
->bus
= pci
[1];
950 pciaddr
->slot
= pci
[2];
951 pciaddr
->function
= pci
[3];
953 disk
= g_malloc0(sizeof(*disk
));
954 disk
->pci_controller
= pciaddr
;
956 list
= g_malloc0(sizeof(*list
));
959 #ifdef CONFIG_LIBUDEV
961 udevice
= udev_device_new_from_syspath(udev
, syspath
);
962 if (udev
== NULL
|| udevice
== NULL
) {
963 g_debug("failed to query udev");
965 const char *devnode
, *serial
;
966 devnode
= udev_device_get_devnode(udevice
);
967 if (devnode
!= NULL
) {
968 disk
->dev
= g_strdup(devnode
);
969 disk
->has_dev
= true;
971 serial
= udev_device_get_property_value(udevice
, "ID_SERIAL");
972 if (serial
!= NULL
&& *serial
!= 0) {
973 disk
->serial
= g_strdup(serial
);
974 disk
->has_serial
= true;
979 if (strcmp(driver
, "ata_piix") == 0) {
980 /* a host per ide bus, target*:0:<unit>:0 */
981 if (!has_host
|| !has_tgt
) {
982 g_debug("invalid sysfs path '%s' (driver '%s')", syspath
, driver
);
985 for (i
= 0; i
< nhosts
; i
++) {
986 if (host
== hosts
[i
]) {
987 disk
->bus_type
= GUEST_DISK_BUS_TYPE_IDE
;
994 g_debug("no host for '%s' (driver '%s')", syspath
, driver
);
997 } else if (strcmp(driver
, "sym53c8xx") == 0) {
998 /* scsi(LSI Logic): target*:0:<unit>:0 */
1000 g_debug("invalid sysfs path '%s' (driver '%s')", syspath
, driver
);
1003 disk
->bus_type
= GUEST_DISK_BUS_TYPE_SCSI
;
1004 disk
->unit
= tgt
[1];
1005 } else if (strcmp(driver
, "virtio-pci") == 0) {
1007 /* virtio-scsi: target*:0:0:<unit> */
1008 disk
->bus_type
= GUEST_DISK_BUS_TYPE_SCSI
;
1009 disk
->unit
= tgt
[2];
1011 /* virtio-blk: 1 disk per 1 device */
1012 disk
->bus_type
= GUEST_DISK_BUS_TYPE_VIRTIO
;
1014 } else if (strcmp(driver
, "ahci") == 0) {
1015 /* ahci: 1 host per 1 unit */
1016 if (!has_host
|| !has_tgt
) {
1017 g_debug("invalid sysfs path '%s' (driver '%s')", syspath
, driver
);
1020 for (i
= 0; i
< nhosts
; i
++) {
1021 if (host
== hosts
[i
]) {
1023 disk
->bus_type
= GUEST_DISK_BUS_TYPE_SATA
;
1028 g_debug("no host for '%s' (driver '%s')", syspath
, driver
);
1032 g_debug("unknown driver '%s' (sysfs path '%s')", driver
, syspath
);
1036 list
->next
= fs
->disk
;
1042 qapi_free_GuestDiskAddressList(list
);
1046 #ifdef CONFIG_LIBUDEV
1048 udev_device_unref(udevice
);
1053 static void build_guest_fsinfo_for_device(char const *devpath
,
1054 GuestFilesystemInfo
*fs
,
1057 /* Store a list of slave devices of virtual volume specified by @syspath into
1059 static void build_guest_fsinfo_for_virtual_device(char const *syspath
,
1060 GuestFilesystemInfo
*fs
,
1065 struct dirent
*entry
;
1067 dirpath
= g_strdup_printf("%s/slaves", syspath
);
1068 dir
= opendir(dirpath
);
1070 if (errno
!= ENOENT
) {
1071 error_setg_errno(errp
, errno
, "opendir(\"%s\")", dirpath
);
1079 entry
= readdir(dir
);
1080 if (entry
== NULL
) {
1082 error_setg_errno(errp
, errno
, "readdir(\"%s\")", dirpath
);
1087 if (entry
->d_type
== DT_LNK
) {
1090 g_debug(" slave device '%s'", entry
->d_name
);
1091 path
= g_strdup_printf("%s/slaves/%s", syspath
, entry
->d_name
);
1092 build_guest_fsinfo_for_device(path
, fs
, errp
);
1105 /* Dispatch to functions for virtual/real device */
1106 static void build_guest_fsinfo_for_device(char const *devpath
,
1107 GuestFilesystemInfo
*fs
,
1110 char *syspath
= realpath(devpath
, NULL
);
1113 error_setg_errno(errp
, errno
, "realpath(\"%s\")", devpath
);
1118 fs
->name
= g_path_get_basename(syspath
);
1121 g_debug(" parse sysfs path '%s'", syspath
);
1123 if (strstr(syspath
, "/devices/virtual/block/")) {
1124 build_guest_fsinfo_for_virtual_device(syspath
, fs
, errp
);
1126 build_guest_fsinfo_for_real_device(syspath
, fs
, errp
);
1132 /* Return a list of the disk device(s)' info which @mount lies on */
1133 static GuestFilesystemInfo
*build_guest_fsinfo(struct FsMount
*mount
,
1136 GuestFilesystemInfo
*fs
= g_malloc0(sizeof(*fs
));
1138 unsigned long used
, nonroot_total
, fr_size
;
1139 char *devpath
= g_strdup_printf("/sys/dev/block/%u:%u",
1140 mount
->devmajor
, mount
->devminor
);
1142 fs
->mountpoint
= g_strdup(mount
->dirname
);
1143 fs
->type
= g_strdup(mount
->devtype
);
1144 build_guest_fsinfo_for_device(devpath
, fs
, errp
);
1146 if (statvfs(fs
->mountpoint
, &buf
) == 0) {
1147 fr_size
= buf
.f_frsize
;
1148 used
= buf
.f_blocks
- buf
.f_bfree
;
1149 nonroot_total
= used
+ buf
.f_bavail
;
1150 fs
->used_bytes
= used
* fr_size
;
1151 fs
->total_bytes
= nonroot_total
* fr_size
;
1153 fs
->has_total_bytes
= true;
1154 fs
->has_used_bytes
= true;
1162 GuestFilesystemInfoList
*qmp_guest_get_fsinfo(Error
**errp
)
1165 struct FsMount
*mount
;
1166 GuestFilesystemInfoList
*new, *ret
= NULL
;
1167 Error
*local_err
= NULL
;
1169 QTAILQ_INIT(&mounts
);
1170 build_fs_mount_list(&mounts
, &local_err
);
1172 error_propagate(errp
, local_err
);
1176 QTAILQ_FOREACH(mount
, &mounts
, next
) {
1177 g_debug("Building guest fsinfo for '%s'", mount
->dirname
);
1179 new = g_malloc0(sizeof(*ret
));
1180 new->value
= build_guest_fsinfo(mount
, &local_err
);
1184 error_propagate(errp
, local_err
);
1185 qapi_free_GuestFilesystemInfoList(ret
);
1191 free_fs_mount_list(&mounts
);
1197 FSFREEZE_HOOK_THAW
= 0,
1198 FSFREEZE_HOOK_FREEZE
,
1201 static const char *fsfreeze_hook_arg_string
[] = {
1206 static void execute_fsfreeze_hook(FsfreezeHookArg arg
, Error
**errp
)
1211 const char *arg_str
= fsfreeze_hook_arg_string
[arg
];
1212 Error
*local_err
= NULL
;
1214 hook
= ga_fsfreeze_hook(ga_state
);
1218 if (access(hook
, X_OK
) != 0) {
1219 error_setg_errno(errp
, errno
, "can't access fsfreeze hook '%s'", hook
);
1223 slog("executing fsfreeze hook with arg '%s'", arg_str
);
1227 reopen_fd_to_null(0);
1228 reopen_fd_to_null(1);
1229 reopen_fd_to_null(2);
1231 execle(hook
, hook
, arg_str
, NULL
, environ
);
1232 _exit(EXIT_FAILURE
);
1233 } else if (pid
< 0) {
1234 error_setg_errno(errp
, errno
, "failed to create child process");
1238 ga_wait_child(pid
, &status
, &local_err
);
1240 error_propagate(errp
, local_err
);
1244 if (!WIFEXITED(status
)) {
1245 error_setg(errp
, "fsfreeze hook has terminated abnormally");
1249 status
= WEXITSTATUS(status
);
1251 error_setg(errp
, "fsfreeze hook has failed with status %d", status
);
1257 * Return status of freeze/thaw
1259 GuestFsfreezeStatus
qmp_guest_fsfreeze_status(Error
**errp
)
1261 if (ga_is_frozen(ga_state
)) {
1262 return GUEST_FSFREEZE_STATUS_FROZEN
;
1265 return GUEST_FSFREEZE_STATUS_THAWED
;
1268 int64_t qmp_guest_fsfreeze_freeze(Error
**errp
)
1270 return qmp_guest_fsfreeze_freeze_list(false, NULL
, errp
);
1274 * Walk list of mounted file systems in the guest, and freeze the ones which
1275 * are real local file systems.
1277 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints
,
1278 strList
*mountpoints
,
1284 struct FsMount
*mount
;
1285 Error
*local_err
= NULL
;
1288 slog("guest-fsfreeze called");
1290 execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE
, &local_err
);
1292 error_propagate(errp
, local_err
);
1296 QTAILQ_INIT(&mounts
);
1297 build_fs_mount_list(&mounts
, &local_err
);
1299 error_propagate(errp
, local_err
);
1303 /* cannot risk guest agent blocking itself on a write in this state */
1304 ga_set_frozen(ga_state
);
1306 QTAILQ_FOREACH_REVERSE(mount
, &mounts
, next
) {
1307 /* To issue fsfreeze in the reverse order of mounts, check if the
1308 * mount is listed in the list here */
1309 if (has_mountpoints
) {
1310 for (list
= mountpoints
; list
; list
= list
->next
) {
1311 if (strcmp(list
->value
, mount
->dirname
) == 0) {
1320 fd
= qemu_open(mount
->dirname
, O_RDONLY
);
1322 error_setg_errno(errp
, errno
, "failed to open %s", mount
->dirname
);
1326 /* we try to cull filesystems we know won't work in advance, but other
1327 * filesystems may not implement fsfreeze for less obvious reasons.
1328 * these will report EOPNOTSUPP. we simply ignore these when tallying
1329 * the number of frozen filesystems.
1330 * if a filesystem is mounted more than once (aka bind mount) a
1331 * consecutive attempt to freeze an already frozen filesystem will
1334 * any other error means a failure to freeze a filesystem we
1335 * expect to be freezable, so return an error in those cases
1336 * and return system to thawed state.
1338 ret
= ioctl(fd
, FIFREEZE
);
1340 if (errno
!= EOPNOTSUPP
&& errno
!= EBUSY
) {
1341 error_setg_errno(errp
, errno
, "failed to freeze %s",
1352 free_fs_mount_list(&mounts
);
1353 /* We may not issue any FIFREEZE here.
1354 * Just unset ga_state here and ready for the next call.
1357 ga_unset_frozen(ga_state
);
1362 free_fs_mount_list(&mounts
);
1363 qmp_guest_fsfreeze_thaw(NULL
);
1368 * Walk list of frozen file systems in the guest, and thaw them.
1370 int64_t qmp_guest_fsfreeze_thaw(Error
**errp
)
1375 int fd
, i
= 0, logged
;
1376 Error
*local_err
= NULL
;
1378 QTAILQ_INIT(&mounts
);
1379 build_fs_mount_list(&mounts
, &local_err
);
1381 error_propagate(errp
, local_err
);
1385 QTAILQ_FOREACH(mount
, &mounts
, next
) {
1387 fd
= qemu_open(mount
->dirname
, O_RDONLY
);
1391 /* we have no way of knowing whether a filesystem was actually unfrozen
1392 * as a result of a successful call to FITHAW, only that if an error
1393 * was returned the filesystem was *not* unfrozen by that particular
1396 * since multiple preceding FIFREEZEs require multiple calls to FITHAW
1397 * to unfreeze, continuing issuing FITHAW until an error is returned,
1398 * in which case either the filesystem is in an unfreezable state, or,
1399 * more likely, it was thawed previously (and remains so afterward).
1401 * also, since the most recent successful call is the one that did
1402 * the actual unfreeze, we can use this to provide an accurate count
1403 * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which
1404 * may * be useful for determining whether a filesystem was unfrozen
1405 * during the freeze/thaw phase by a process other than qemu-ga.
1408 ret
= ioctl(fd
, FITHAW
);
1409 if (ret
== 0 && !logged
) {
1417 ga_unset_frozen(ga_state
);
1418 free_fs_mount_list(&mounts
);
1420 execute_fsfreeze_hook(FSFREEZE_HOOK_THAW
, errp
);
1425 static void guest_fsfreeze_cleanup(void)
1429 if (ga_is_frozen(ga_state
) == GUEST_FSFREEZE_STATUS_FROZEN
) {
1430 qmp_guest_fsfreeze_thaw(&err
);
1432 slog("failed to clean up frozen filesystems: %s",
1433 error_get_pretty(err
));
1438 #endif /* CONFIG_FSFREEZE */
1440 #if defined(CONFIG_FSTRIM)
1442 * Walk list of mounted file systems in the guest, and trim them.
1444 GuestFilesystemTrimResponse
*
1445 qmp_guest_fstrim(bool has_minimum
, int64_t minimum
, Error
**errp
)
1447 GuestFilesystemTrimResponse
*response
;
1448 GuestFilesystemTrimResultList
*list
;
1449 GuestFilesystemTrimResult
*result
;
1452 struct FsMount
*mount
;
1454 Error
*local_err
= NULL
;
1455 struct fstrim_range r
;
1457 slog("guest-fstrim called");
1459 QTAILQ_INIT(&mounts
);
1460 build_fs_mount_list(&mounts
, &local_err
);
1462 error_propagate(errp
, local_err
);
1466 response
= g_malloc0(sizeof(*response
));
1468 QTAILQ_FOREACH(mount
, &mounts
, next
) {
1469 result
= g_malloc0(sizeof(*result
));
1470 result
->path
= g_strdup(mount
->dirname
);
1472 list
= g_malloc0(sizeof(*list
));
1473 list
->value
= result
;
1474 list
->next
= response
->paths
;
1475 response
->paths
= list
;
1477 fd
= qemu_open(mount
->dirname
, O_RDONLY
);
1479 result
->error
= g_strdup_printf("failed to open: %s",
1481 result
->has_error
= true;
1485 /* We try to cull filesystems we know won't work in advance, but other
1486 * filesystems may not implement fstrim for less obvious reasons.
1487 * These will report EOPNOTSUPP; while in some other cases ENOTTY
1488 * will be reported (e.g. CD-ROMs).
1489 * Any other error means an unexpected error.
1493 r
.minlen
= has_minimum
? minimum
: 0;
1494 ret
= ioctl(fd
, FITRIM
, &r
);
1496 result
->has_error
= true;
1497 if (errno
== ENOTTY
|| errno
== EOPNOTSUPP
) {
1498 result
->error
= g_strdup("trim not supported");
1500 result
->error
= g_strdup_printf("failed to trim: %s",
1507 result
->has_minimum
= true;
1508 result
->minimum
= r
.minlen
;
1509 result
->has_trimmed
= true;
1510 result
->trimmed
= r
.len
;
1514 free_fs_mount_list(&mounts
);
1517 #endif /* CONFIG_FSTRIM */
1520 #define LINUX_SYS_STATE_FILE "/sys/power/state"
1521 #define SUSPEND_SUPPORTED 0
1522 #define SUSPEND_NOT_SUPPORTED 1
1525 SUSPEND_MODE_DISK
= 0,
1526 SUSPEND_MODE_RAM
= 1,
1527 SUSPEND_MODE_HYBRID
= 2,
1531 * Executes a command in a child process using g_spawn_sync,
1532 * returning an int >= 0 representing the exit status of the
1535 * If the program wasn't found in path, returns -1.
1537 * If a problem happened when creating the child process,
1538 * returns -1 and errp is set.
1540 static int run_process_child(const char *command
[], Error
**errp
)
1542 int exit_status
, spawn_flag
;
1543 GError
*g_err
= NULL
;
1546 spawn_flag
= G_SPAWN_SEARCH_PATH
| G_SPAWN_STDOUT_TO_DEV_NULL
|
1547 G_SPAWN_STDERR_TO_DEV_NULL
;
1549 success
= g_spawn_sync(NULL
, (char **)command
, environ
, spawn_flag
,
1550 NULL
, NULL
, NULL
, NULL
,
1551 &exit_status
, &g_err
);
1554 return WEXITSTATUS(exit_status
);
1557 if (g_err
&& (g_err
->code
!= G_SPAWN_ERROR_NOENT
)) {
1558 error_setg(errp
, "failed to create child process, error '%s'",
1562 g_error_free(g_err
);
1566 static bool systemd_supports_mode(SuspendMode mode
, Error
**errp
)
1568 Error
*local_err
= NULL
;
1569 const char *systemctl_args
[3] = {"systemd-hibernate", "systemd-suspend",
1570 "systemd-hybrid-sleep"};
1571 const char *cmd
[4] = {"systemctl", "status", systemctl_args
[mode
], NULL
};
1574 status
= run_process_child(cmd
, &local_err
);
1577 * systemctl status uses LSB return codes so we can expect
1578 * status > 0 and be ok. To assert if the guest has support
1579 * for the selected suspend mode, status should be < 4. 4 is
1580 * the code for unknown service status, the return value when
1581 * the service does not exist. A common value is status = 3
1582 * (program is not running).
1584 if (status
> 0 && status
< 4) {
1588 error_propagate(errp
, local_err
);
1592 static void systemd_suspend(SuspendMode mode
, Error
**errp
)
1594 Error
*local_err
= NULL
;
1595 const char *systemctl_args
[3] = {"hibernate", "suspend", "hybrid-sleep"};
1596 const char *cmd
[3] = {"systemctl", systemctl_args
[mode
], NULL
};
1599 status
= run_process_child(cmd
, &local_err
);
1605 if ((status
== -1) && !local_err
) {
1606 error_setg(errp
, "the helper program 'systemctl %s' was not found",
1607 systemctl_args
[mode
]);
1612 error_propagate(errp
, local_err
);
1614 error_setg(errp
, "the helper program 'systemctl %s' returned an "
1615 "unexpected exit status code (%d)",
1616 systemctl_args
[mode
], status
);
1620 static bool pmutils_supports_mode(SuspendMode mode
, Error
**errp
)
1622 Error
*local_err
= NULL
;
1623 const char *pmutils_args
[3] = {"--hibernate", "--suspend",
1624 "--suspend-hybrid"};
1625 const char *cmd
[3] = {"pm-is-supported", pmutils_args
[mode
], NULL
};
1628 status
= run_process_child(cmd
, &local_err
);
1630 if (status
== SUSPEND_SUPPORTED
) {
1634 if ((status
== -1) && !local_err
) {
1639 error_propagate(errp
, local_err
);
1642 "the helper program '%s' returned an unexpected exit"
1643 " status code (%d)", "pm-is-supported", status
);
1649 static void pmutils_suspend(SuspendMode mode
, Error
**errp
)
1651 Error
*local_err
= NULL
;
1652 const char *pmutils_binaries
[3] = {"pm-hibernate", "pm-suspend",
1653 "pm-suspend-hybrid"};
1654 const char *cmd
[2] = {pmutils_binaries
[mode
], NULL
};
1657 status
= run_process_child(cmd
, &local_err
);
1663 if ((status
== -1) && !local_err
) {
1664 error_setg(errp
, "the helper program '%s' was not found",
1665 pmutils_binaries
[mode
]);
1670 error_propagate(errp
, local_err
);
1673 "the helper program '%s' returned an unexpected exit"
1674 " status code (%d)", pmutils_binaries
[mode
], status
);
1678 static bool linux_sys_state_supports_mode(SuspendMode mode
, Error
**errp
)
1680 const char *sysfile_strs
[3] = {"disk", "mem", NULL
};
1681 const char *sysfile_str
= sysfile_strs
[mode
];
1682 char buf
[32]; /* hopefully big enough */
1687 error_setg(errp
, "unknown guest suspend mode");
1691 fd
= open(LINUX_SYS_STATE_FILE
, O_RDONLY
);
1696 ret
= read(fd
, buf
, sizeof(buf
) - 1);
1703 if (strstr(buf
, sysfile_str
)) {
1709 static void linux_sys_state_suspend(SuspendMode mode
, Error
**errp
)
1711 Error
*local_err
= NULL
;
1712 const char *sysfile_strs
[3] = {"disk", "mem", NULL
};
1713 const char *sysfile_str
= sysfile_strs
[mode
];
1718 error_setg(errp
, "unknown guest suspend mode");
1728 reopen_fd_to_null(0);
1729 reopen_fd_to_null(1);
1730 reopen_fd_to_null(2);
1732 fd
= open(LINUX_SYS_STATE_FILE
, O_WRONLY
);
1734 _exit(EXIT_FAILURE
);
1737 if (write(fd
, sysfile_str
, strlen(sysfile_str
)) < 0) {
1738 _exit(EXIT_FAILURE
);
1741 _exit(EXIT_SUCCESS
);
1742 } else if (pid
< 0) {
1743 error_setg_errno(errp
, errno
, "failed to create child process");
1747 ga_wait_child(pid
, &status
, &local_err
);
1749 error_propagate(errp
, local_err
);
1753 if (WEXITSTATUS(status
)) {
1754 error_setg(errp
, "child process has failed to suspend");
1759 static void guest_suspend(SuspendMode mode
, Error
**errp
)
1761 Error
*local_err
= NULL
;
1762 bool mode_supported
= false;
1764 if (systemd_supports_mode(mode
, &local_err
)) {
1765 mode_supported
= true;
1766 systemd_suspend(mode
, &local_err
);
1773 error_free(local_err
);
1775 if (pmutils_supports_mode(mode
, &local_err
)) {
1776 mode_supported
= true;
1777 pmutils_suspend(mode
, &local_err
);
1784 error_free(local_err
);
1786 if (linux_sys_state_supports_mode(mode
, &local_err
)) {
1787 mode_supported
= true;
1788 linux_sys_state_suspend(mode
, &local_err
);
1791 if (!mode_supported
) {
1793 "the requested suspend mode is not supported by the guest");
1795 error_propagate(errp
, local_err
);
1799 void qmp_guest_suspend_disk(Error
**errp
)
1801 guest_suspend(SUSPEND_MODE_DISK
, errp
);
1804 void qmp_guest_suspend_ram(Error
**errp
)
1806 guest_suspend(SUSPEND_MODE_RAM
, errp
);
1809 void qmp_guest_suspend_hybrid(Error
**errp
)
1811 guest_suspend(SUSPEND_MODE_HYBRID
, errp
);
1814 static GuestNetworkInterfaceList
*
1815 guest_find_interface(GuestNetworkInterfaceList
*head
,
1818 for (; head
; head
= head
->next
) {
1819 if (strcmp(head
->value
->name
, name
) == 0) {
1827 static int guest_get_network_stats(const char *name
,
1828 GuestNetworkInterfaceStat
*stats
)
1831 char const *devinfo
= "/proc/net/dev";
1833 char *line
= NULL
, *colon
;
1835 fp
= fopen(devinfo
, "r");
1839 name_len
= strlen(name
);
1840 while (getline(&line
, &n
, fp
) != -1) {
1843 long long rx_packets
;
1845 long long rx_dropped
;
1847 long long tx_packets
;
1849 long long tx_dropped
;
1851 trim_line
= g_strchug(line
);
1852 if (trim_line
[0] == '\0') {
1855 colon
= strchr(trim_line
, ':');
1859 if (colon
- name_len
== trim_line
&&
1860 strncmp(trim_line
, name
, name_len
) == 0) {
1861 if (sscanf(colon
+ 1,
1862 "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld",
1863 &rx_bytes
, &rx_packets
, &rx_errs
, &rx_dropped
,
1864 &dummy
, &dummy
, &dummy
, &dummy
,
1865 &tx_bytes
, &tx_packets
, &tx_errs
, &tx_dropped
,
1866 &dummy
, &dummy
, &dummy
, &dummy
) != 16) {
1869 stats
->rx_bytes
= rx_bytes
;
1870 stats
->rx_packets
= rx_packets
;
1871 stats
->rx_errs
= rx_errs
;
1872 stats
->rx_dropped
= rx_dropped
;
1873 stats
->tx_bytes
= tx_bytes
;
1874 stats
->tx_packets
= tx_packets
;
1875 stats
->tx_errs
= tx_errs
;
1876 stats
->tx_dropped
= tx_dropped
;
1884 g_debug("/proc/net/dev: Interface '%s' not found", name
);
1889 * Build information about guest interfaces
1891 GuestNetworkInterfaceList
*qmp_guest_network_get_interfaces(Error
**errp
)
1893 GuestNetworkInterfaceList
*head
= NULL
, *cur_item
= NULL
;
1894 struct ifaddrs
*ifap
, *ifa
;
1896 if (getifaddrs(&ifap
) < 0) {
1897 error_setg_errno(errp
, errno
, "getifaddrs failed");
1901 for (ifa
= ifap
; ifa
; ifa
= ifa
->ifa_next
) {
1902 GuestNetworkInterfaceList
*info
;
1903 GuestIpAddressList
**address_list
= NULL
, *address_item
= NULL
;
1904 GuestNetworkInterfaceStat
*interface_stat
= NULL
;
1905 char addr4
[INET_ADDRSTRLEN
];
1906 char addr6
[INET6_ADDRSTRLEN
];
1909 unsigned char *mac_addr
;
1912 g_debug("Processing %s interface", ifa
->ifa_name
);
1914 info
= guest_find_interface(head
, ifa
->ifa_name
);
1917 info
= g_malloc0(sizeof(*info
));
1918 info
->value
= g_malloc0(sizeof(*info
->value
));
1919 info
->value
->name
= g_strdup(ifa
->ifa_name
);
1922 head
= cur_item
= info
;
1924 cur_item
->next
= info
;
1929 if (!info
->value
->has_hardware_address
&&
1930 ifa
->ifa_flags
& SIOCGIFHWADDR
) {
1931 /* we haven't obtained HW address yet */
1932 sock
= socket(PF_INET
, SOCK_STREAM
, 0);
1934 error_setg_errno(errp
, errno
, "failed to create socket");
1938 memset(&ifr
, 0, sizeof(ifr
));
1939 pstrcpy(ifr
.ifr_name
, IF_NAMESIZE
, info
->value
->name
);
1940 if (ioctl(sock
, SIOCGIFHWADDR
, &ifr
) == -1) {
1941 error_setg_errno(errp
, errno
,
1942 "failed to get MAC address of %s",
1949 mac_addr
= (unsigned char *) &ifr
.ifr_hwaddr
.sa_data
;
1951 info
->value
->hardware_address
=
1952 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x",
1953 (int) mac_addr
[0], (int) mac_addr
[1],
1954 (int) mac_addr
[2], (int) mac_addr
[3],
1955 (int) mac_addr
[4], (int) mac_addr
[5]);
1957 info
->value
->has_hardware_address
= true;
1960 if (ifa
->ifa_addr
&&
1961 ifa
->ifa_addr
->sa_family
== AF_INET
) {
1962 /* interface with IPv4 address */
1963 p
= &((struct sockaddr_in
*)ifa
->ifa_addr
)->sin_addr
;
1964 if (!inet_ntop(AF_INET
, p
, addr4
, sizeof(addr4
))) {
1965 error_setg_errno(errp
, errno
, "inet_ntop failed");
1969 address_item
= g_malloc0(sizeof(*address_item
));
1970 address_item
->value
= g_malloc0(sizeof(*address_item
->value
));
1971 address_item
->value
->ip_address
= g_strdup(addr4
);
1972 address_item
->value
->ip_address_type
= GUEST_IP_ADDRESS_TYPE_IPV4
;
1974 if (ifa
->ifa_netmask
) {
1975 /* Count the number of set bits in netmask.
1976 * This is safe as '1' and '0' cannot be shuffled in netmask. */
1977 p
= &((struct sockaddr_in
*)ifa
->ifa_netmask
)->sin_addr
;
1978 address_item
->value
->prefix
= ctpop32(((uint32_t *) p
)[0]);
1980 } else if (ifa
->ifa_addr
&&
1981 ifa
->ifa_addr
->sa_family
== AF_INET6
) {
1982 /* interface with IPv6 address */
1983 p
= &((struct sockaddr_in6
*)ifa
->ifa_addr
)->sin6_addr
;
1984 if (!inet_ntop(AF_INET6
, p
, addr6
, sizeof(addr6
))) {
1985 error_setg_errno(errp
, errno
, "inet_ntop failed");
1989 address_item
= g_malloc0(sizeof(*address_item
));
1990 address_item
->value
= g_malloc0(sizeof(*address_item
->value
));
1991 address_item
->value
->ip_address
= g_strdup(addr6
);
1992 address_item
->value
->ip_address_type
= GUEST_IP_ADDRESS_TYPE_IPV6
;
1994 if (ifa
->ifa_netmask
) {
1995 /* Count the number of set bits in netmask.
1996 * This is safe as '1' and '0' cannot be shuffled in netmask. */
1997 p
= &((struct sockaddr_in6
*)ifa
->ifa_netmask
)->sin6_addr
;
1998 address_item
->value
->prefix
=
1999 ctpop32(((uint32_t *) p
)[0]) +
2000 ctpop32(((uint32_t *) p
)[1]) +
2001 ctpop32(((uint32_t *) p
)[2]) +
2002 ctpop32(((uint32_t *) p
)[3]);
2006 if (!address_item
) {
2010 address_list
= &info
->value
->ip_addresses
;
2012 while (*address_list
&& (*address_list
)->next
) {
2013 address_list
= &(*address_list
)->next
;
2016 if (!*address_list
) {
2017 *address_list
= address_item
;
2019 (*address_list
)->next
= address_item
;
2022 info
->value
->has_ip_addresses
= true;
2024 if (!info
->value
->has_statistics
) {
2025 interface_stat
= g_malloc0(sizeof(*interface_stat
));
2026 if (guest_get_network_stats(info
->value
->name
,
2027 interface_stat
) == -1) {
2028 info
->value
->has_statistics
= false;
2029 g_free(interface_stat
);
2031 info
->value
->statistics
= interface_stat
;
2032 info
->value
->has_statistics
= true;
2042 qapi_free_GuestNetworkInterfaceList(head
);
2046 #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp))
2048 static long sysconf_exact(int name
, const char *name_str
, Error
**errp
)
2053 ret
= sysconf(name
);
2056 error_setg(errp
, "sysconf(%s): value indefinite", name_str
);
2058 error_setg_errno(errp
, errno
, "sysconf(%s)", name_str
);
2064 /* Transfer online/offline status between @vcpu and the guest system.
2066 * On input either @errp or *@errp must be NULL.
2068 * In system-to-@vcpu direction, the following @vcpu fields are accessed:
2069 * - R: vcpu->logical_id
2071 * - W: vcpu->can_offline
2073 * In @vcpu-to-system direction, the following @vcpu fields are accessed:
2074 * - R: vcpu->logical_id
2077 * Written members remain unmodified on error.
2079 static void transfer_vcpu(GuestLogicalProcessor
*vcpu
, bool sys2vcpu
,
2080 char *dirpath
, Error
**errp
)
2085 static const char fn
[] = "online";
2087 dirfd
= open(dirpath
, O_RDONLY
| O_DIRECTORY
);
2089 error_setg_errno(errp
, errno
, "open(\"%s\")", dirpath
);
2093 fd
= openat(dirfd
, fn
, sys2vcpu
? O_RDONLY
: O_RDWR
);
2095 if (errno
!= ENOENT
) {
2096 error_setg_errno(errp
, errno
, "open(\"%s/%s\")", dirpath
, fn
);
2097 } else if (sys2vcpu
) {
2098 vcpu
->online
= true;
2099 vcpu
->can_offline
= false;
2100 } else if (!vcpu
->online
) {
2101 error_setg(errp
, "logical processor #%" PRId64
" can't be "
2102 "offlined", vcpu
->logical_id
);
2103 } /* otherwise pretend successful re-onlining */
2105 unsigned char status
;
2107 res
= pread(fd
, &status
, 1, 0);
2109 error_setg_errno(errp
, errno
, "pread(\"%s/%s\")", dirpath
, fn
);
2110 } else if (res
== 0) {
2111 error_setg(errp
, "pread(\"%s/%s\"): unexpected EOF", dirpath
,
2113 } else if (sys2vcpu
) {
2114 vcpu
->online
= (status
!= '0');
2115 vcpu
->can_offline
= true;
2116 } else if (vcpu
->online
!= (status
!= '0')) {
2117 status
= '0' + vcpu
->online
;
2118 if (pwrite(fd
, &status
, 1, 0) == -1) {
2119 error_setg_errno(errp
, errno
, "pwrite(\"%s/%s\")", dirpath
,
2122 } /* otherwise pretend successful re-(on|off)-lining */
2132 GuestLogicalProcessorList
*qmp_guest_get_vcpus(Error
**errp
)
2135 GuestLogicalProcessorList
*head
, **link
;
2137 Error
*local_err
= NULL
;
2142 sc_max
= SYSCONF_EXACT(_SC_NPROCESSORS_CONF
, &local_err
);
2144 while (local_err
== NULL
&& current
< sc_max
) {
2145 GuestLogicalProcessor
*vcpu
;
2146 GuestLogicalProcessorList
*entry
;
2147 int64_t id
= current
++;
2148 char *path
= g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64
"/",
2151 if (g_file_test(path
, G_FILE_TEST_EXISTS
)) {
2152 vcpu
= g_malloc0(sizeof *vcpu
);
2153 vcpu
->logical_id
= id
;
2154 vcpu
->has_can_offline
= true; /* lolspeak ftw */
2155 transfer_vcpu(vcpu
, true, path
, &local_err
);
2156 entry
= g_malloc0(sizeof *entry
);
2157 entry
->value
= vcpu
;
2159 link
= &entry
->next
;
2164 if (local_err
== NULL
) {
2165 /* there's no guest with zero VCPUs */
2166 g_assert(head
!= NULL
);
2170 qapi_free_GuestLogicalProcessorList(head
);
2171 error_propagate(errp
, local_err
);
2175 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList
*vcpus
, Error
**errp
)
2178 Error
*local_err
= NULL
;
2181 while (vcpus
!= NULL
) {
2182 char *path
= g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64
"/",
2183 vcpus
->value
->logical_id
);
2185 transfer_vcpu(vcpus
->value
, false, path
, &local_err
);
2187 if (local_err
!= NULL
) {
2191 vcpus
= vcpus
->next
;
2194 if (local_err
!= NULL
) {
2195 if (processed
== 0) {
2196 error_propagate(errp
, local_err
);
2198 error_free(local_err
);
2205 void qmp_guest_set_user_password(const char *username
,
2206 const char *password
,
2210 Error
*local_err
= NULL
;
2211 char *passwd_path
= NULL
;
2214 int datafd
[2] = { -1, -1 };
2215 char *rawpasswddata
= NULL
;
2216 size_t rawpasswdlen
;
2217 char *chpasswddata
= NULL
;
2220 rawpasswddata
= (char *)qbase64_decode(password
, -1, &rawpasswdlen
, errp
);
2221 if (!rawpasswddata
) {
2224 rawpasswddata
= g_renew(char, rawpasswddata
, rawpasswdlen
+ 1);
2225 rawpasswddata
[rawpasswdlen
] = '\0';
2227 if (strchr(rawpasswddata
, '\n')) {
2228 error_setg(errp
, "forbidden characters in raw password");
2232 if (strchr(username
, '\n') ||
2233 strchr(username
, ':')) {
2234 error_setg(errp
, "forbidden characters in username");
2238 chpasswddata
= g_strdup_printf("%s:%s\n", username
, rawpasswddata
);
2239 chpasswdlen
= strlen(chpasswddata
);
2241 passwd_path
= g_find_program_in_path("chpasswd");
2244 error_setg(errp
, "cannot find 'passwd' program in PATH");
2248 if (pipe(datafd
) < 0) {
2249 error_setg(errp
, "cannot create pipe FDs");
2259 reopen_fd_to_null(1);
2260 reopen_fd_to_null(2);
2263 execle(passwd_path
, "chpasswd", "-e", NULL
, environ
);
2265 execle(passwd_path
, "chpasswd", NULL
, environ
);
2267 _exit(EXIT_FAILURE
);
2268 } else if (pid
< 0) {
2269 error_setg_errno(errp
, errno
, "failed to create child process");
2275 if (qemu_write_full(datafd
[1], chpasswddata
, chpasswdlen
) != chpasswdlen
) {
2276 error_setg_errno(errp
, errno
, "cannot write new account password");
2282 ga_wait_child(pid
, &status
, &local_err
);
2284 error_propagate(errp
, local_err
);
2288 if (!WIFEXITED(status
)) {
2289 error_setg(errp
, "child process has terminated abnormally");
2293 if (WEXITSTATUS(status
)) {
2294 error_setg(errp
, "child process has failed to set user password");
2299 g_free(chpasswddata
);
2300 g_free(rawpasswddata
);
2301 g_free(passwd_path
);
2302 if (datafd
[0] != -1) {
2305 if (datafd
[1] != -1) {
2310 static void ga_read_sysfs_file(int dirfd
, const char *pathname
, char *buf
,
2311 int size
, Error
**errp
)
2317 fd
= openat(dirfd
, pathname
, O_RDONLY
);
2319 error_setg_errno(errp
, errno
, "open sysfs file \"%s\"", pathname
);
2323 res
= pread(fd
, buf
, size
, 0);
2325 error_setg_errno(errp
, errno
, "pread sysfs file \"%s\"", pathname
);
2326 } else if (res
== 0) {
2327 error_setg(errp
, "pread sysfs file \"%s\": unexpected EOF", pathname
);
2332 static void ga_write_sysfs_file(int dirfd
, const char *pathname
,
2333 const char *buf
, int size
, Error
**errp
)
2338 fd
= openat(dirfd
, pathname
, O_WRONLY
);
2340 error_setg_errno(errp
, errno
, "open sysfs file \"%s\"", pathname
);
2344 if (pwrite(fd
, buf
, size
, 0) == -1) {
2345 error_setg_errno(errp
, errno
, "pwrite sysfs file \"%s\"", pathname
);
2351 /* Transfer online/offline status between @mem_blk and the guest system.
2353 * On input either @errp or *@errp must be NULL.
2355 * In system-to-@mem_blk direction, the following @mem_blk fields are accessed:
2356 * - R: mem_blk->phys_index
2357 * - W: mem_blk->online
2358 * - W: mem_blk->can_offline
2360 * In @mem_blk-to-system direction, the following @mem_blk fields are accessed:
2361 * - R: mem_blk->phys_index
2362 * - R: mem_blk->online
2363 *- R: mem_blk->can_offline
2364 * Written members remain unmodified on error.
2366 static void transfer_memory_block(GuestMemoryBlock
*mem_blk
, bool sys2memblk
,
2367 GuestMemoryBlockResponse
*result
,
2373 Error
*local_err
= NULL
;
2379 error_setg(errp
, "Internal error, 'result' should not be NULL");
2383 dp
= opendir("/sys/devices/system/memory/");
2384 /* if there is no 'memory' directory in sysfs,
2385 * we think this VM does not support online/offline memory block,
2386 * any other solution?
2389 if (errno
== ENOENT
) {
2391 GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED
;
2398 dirpath
= g_strdup_printf("/sys/devices/system/memory/memory%" PRId64
"/",
2399 mem_blk
->phys_index
);
2400 dirfd
= open(dirpath
, O_RDONLY
| O_DIRECTORY
);
2403 error_setg_errno(errp
, errno
, "open(\"%s\")", dirpath
);
2405 if (errno
== ENOENT
) {
2406 result
->response
= GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND
;
2409 GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED
;
2417 status
= g_malloc0(10);
2418 ga_read_sysfs_file(dirfd
, "state", status
, 10, &local_err
);
2420 /* treat with sysfs file that not exist in old kernel */
2421 if (errno
== ENOENT
) {
2422 error_free(local_err
);
2424 mem_blk
->online
= true;
2425 mem_blk
->can_offline
= false;
2426 } else if (!mem_blk
->online
) {
2428 GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED
;
2432 error_propagate(errp
, local_err
);
2435 GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED
;
2442 char removable
= '0';
2444 mem_blk
->online
= (strncmp(status
, "online", 6) == 0);
2446 ga_read_sysfs_file(dirfd
, "removable", &removable
, 1, &local_err
);
2448 /* if no 'removable' file, it doesn't support offline mem blk */
2449 if (errno
== ENOENT
) {
2450 error_free(local_err
);
2451 mem_blk
->can_offline
= false;
2453 error_propagate(errp
, local_err
);
2456 mem_blk
->can_offline
= (removable
!= '0');
2459 if (mem_blk
->online
!= (strncmp(status
, "online", 6) == 0)) {
2460 const char *new_state
= mem_blk
->online
? "online" : "offline";
2462 ga_write_sysfs_file(dirfd
, "state", new_state
, strlen(new_state
),
2465 error_free(local_err
);
2467 GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED
;
2471 result
->response
= GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS
;
2472 result
->has_error_code
= false;
2473 } /* otherwise pretend successful re-(on|off)-lining */
2484 result
->has_error_code
= true;
2485 result
->error_code
= errno
;
2489 GuestMemoryBlockList
*qmp_guest_get_memory_blocks(Error
**errp
)
2491 GuestMemoryBlockList
*head
, **link
;
2492 Error
*local_err
= NULL
;
2499 dp
= opendir("/sys/devices/system/memory/");
2501 /* it's ok if this happens to be a system that doesn't expose
2502 * memory blocks via sysfs, but otherwise we should report
2505 if (errno
!= ENOENT
) {
2506 error_setg_errno(errp
, errno
, "Can't open directory"
2507 "\"/sys/devices/system/memory/\"");
2512 /* Note: the phys_index of memory block may be discontinuous,
2513 * this is because a memblk is the unit of the Sparse Memory design, which
2514 * allows discontinuous memory ranges (ex. NUMA), so here we should
2515 * traverse the memory block directory.
2517 while ((de
= readdir(dp
)) != NULL
) {
2518 GuestMemoryBlock
*mem_blk
;
2519 GuestMemoryBlockList
*entry
;
2521 if ((strncmp(de
->d_name
, "memory", 6) != 0) ||
2522 !(de
->d_type
& DT_DIR
)) {
2526 mem_blk
= g_malloc0(sizeof *mem_blk
);
2527 /* The d_name is "memoryXXX", phys_index is block id, same as XXX */
2528 mem_blk
->phys_index
= strtoul(&de
->d_name
[6], NULL
, 10);
2529 mem_blk
->has_can_offline
= true; /* lolspeak ftw */
2530 transfer_memory_block(mem_blk
, true, NULL
, &local_err
);
2532 entry
= g_malloc0(sizeof *entry
);
2533 entry
->value
= mem_blk
;
2536 link
= &entry
->next
;
2540 if (local_err
== NULL
) {
2541 /* there's no guest with zero memory blocks */
2543 error_setg(errp
, "guest reported zero memory blocks!");
2548 qapi_free_GuestMemoryBlockList(head
);
2549 error_propagate(errp
, local_err
);
2553 GuestMemoryBlockResponseList
*
2554 qmp_guest_set_memory_blocks(GuestMemoryBlockList
*mem_blks
, Error
**errp
)
2556 GuestMemoryBlockResponseList
*head
, **link
;
2557 Error
*local_err
= NULL
;
2562 while (mem_blks
!= NULL
) {
2563 GuestMemoryBlockResponse
*result
;
2564 GuestMemoryBlockResponseList
*entry
;
2565 GuestMemoryBlock
*current_mem_blk
= mem_blks
->value
;
2567 result
= g_malloc0(sizeof(*result
));
2568 result
->phys_index
= current_mem_blk
->phys_index
;
2569 transfer_memory_block(current_mem_blk
, false, result
, &local_err
);
2570 if (local_err
) { /* should never happen */
2573 entry
= g_malloc0(sizeof *entry
);
2574 entry
->value
= result
;
2577 link
= &entry
->next
;
2578 mem_blks
= mem_blks
->next
;
2583 qapi_free_GuestMemoryBlockResponseList(head
);
2584 error_propagate(errp
, local_err
);
2588 GuestMemoryBlockInfo
*qmp_guest_get_memory_block_info(Error
**errp
)
2590 Error
*local_err
= NULL
;
2594 GuestMemoryBlockInfo
*info
;
2596 dirpath
= g_strdup_printf("/sys/devices/system/memory/");
2597 dirfd
= open(dirpath
, O_RDONLY
| O_DIRECTORY
);
2599 error_setg_errno(errp
, errno
, "open(\"%s\")", dirpath
);
2605 buf
= g_malloc0(20);
2606 ga_read_sysfs_file(dirfd
, "block_size_bytes", buf
, 20, &local_err
);
2610 error_propagate(errp
, local_err
);
2614 info
= g_new0(GuestMemoryBlockInfo
, 1);
2615 info
->size
= strtol(buf
, NULL
, 16); /* the unit is bytes */
2622 #else /* defined(__linux__) */
2624 void qmp_guest_suspend_disk(Error
**errp
)
2626 error_setg(errp
, QERR_UNSUPPORTED
);
2629 void qmp_guest_suspend_ram(Error
**errp
)
2631 error_setg(errp
, QERR_UNSUPPORTED
);
2634 void qmp_guest_suspend_hybrid(Error
**errp
)
2636 error_setg(errp
, QERR_UNSUPPORTED
);
2639 GuestNetworkInterfaceList
*qmp_guest_network_get_interfaces(Error
**errp
)
2641 error_setg(errp
, QERR_UNSUPPORTED
);
2645 GuestLogicalProcessorList
*qmp_guest_get_vcpus(Error
**errp
)
2647 error_setg(errp
, QERR_UNSUPPORTED
);
2651 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList
*vcpus
, Error
**errp
)
2653 error_setg(errp
, QERR_UNSUPPORTED
);
2657 void qmp_guest_set_user_password(const char *username
,
2658 const char *password
,
2662 error_setg(errp
, QERR_UNSUPPORTED
);
2665 GuestMemoryBlockList
*qmp_guest_get_memory_blocks(Error
**errp
)
2667 error_setg(errp
, QERR_UNSUPPORTED
);
2671 GuestMemoryBlockResponseList
*
2672 qmp_guest_set_memory_blocks(GuestMemoryBlockList
*mem_blks
, Error
**errp
)
2674 error_setg(errp
, QERR_UNSUPPORTED
);
2678 GuestMemoryBlockInfo
*qmp_guest_get_memory_block_info(Error
**errp
)
2680 error_setg(errp
, QERR_UNSUPPORTED
);
2686 #if !defined(CONFIG_FSFREEZE)
2688 GuestFilesystemInfoList
*qmp_guest_get_fsinfo(Error
**errp
)
2690 error_setg(errp
, QERR_UNSUPPORTED
);
2694 GuestFsfreezeStatus
qmp_guest_fsfreeze_status(Error
**errp
)
2696 error_setg(errp
, QERR_UNSUPPORTED
);
2701 int64_t qmp_guest_fsfreeze_freeze(Error
**errp
)
2703 error_setg(errp
, QERR_UNSUPPORTED
);
2708 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints
,
2709 strList
*mountpoints
,
2712 error_setg(errp
, QERR_UNSUPPORTED
);
2717 int64_t qmp_guest_fsfreeze_thaw(Error
**errp
)
2719 error_setg(errp
, QERR_UNSUPPORTED
);
2723 #endif /* CONFIG_FSFREEZE */
2725 #if !defined(CONFIG_FSTRIM)
2726 GuestFilesystemTrimResponse
*
2727 qmp_guest_fstrim(bool has_minimum
, int64_t minimum
, Error
**errp
)
2729 error_setg(errp
, QERR_UNSUPPORTED
);
2734 /* add unsupported commands to the blacklist */
2735 GList
*ga_command_blacklist_init(GList
*blacklist
)
2737 #if !defined(__linux__)
2739 const char *list
[] = {
2740 "guest-suspend-disk", "guest-suspend-ram",
2741 "guest-suspend-hybrid", "guest-network-get-interfaces",
2742 "guest-get-vcpus", "guest-set-vcpus",
2743 "guest-get-memory-blocks", "guest-set-memory-blocks",
2744 "guest-get-memory-block-size", "guest-get-memory-block-info",
2746 char **p
= (char **)list
;
2749 blacklist
= g_list_append(blacklist
, g_strdup(*p
++));
2754 #if !defined(CONFIG_FSFREEZE)
2756 const char *list
[] = {
2757 "guest-get-fsinfo", "guest-fsfreeze-status",
2758 "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list",
2759 "guest-fsfreeze-thaw", "guest-get-fsinfo", NULL
};
2760 char **p
= (char **)list
;
2763 blacklist
= g_list_append(blacklist
, g_strdup(*p
++));
2768 #if !defined(CONFIG_FSTRIM)
2769 blacklist
= g_list_append(blacklist
, g_strdup("guest-fstrim"));
2775 /* register init/cleanup routines for stateful command groups */
2776 void ga_command_state_init(GAState
*s
, GACommandState
*cs
)
2778 #if defined(CONFIG_FSFREEZE)
2779 ga_command_state_add(cs
, NULL
, guest_fsfreeze_cleanup
);
2785 #define QGA_MICRO_SECOND_TO_SECOND 1000000
2787 static double ga_get_login_time(struct utmpx
*user_info
)
2789 double seconds
= (double)user_info
->ut_tv
.tv_sec
;
2790 double useconds
= (double)user_info
->ut_tv
.tv_usec
;
2791 useconds
/= QGA_MICRO_SECOND_TO_SECOND
;
2792 return seconds
+ useconds
;
2795 GuestUserList
*qmp_guest_get_users(Error
**err
)
2797 GHashTable
*cache
= NULL
;
2798 GuestUserList
*head
= NULL
, *cur_item
= NULL
;
2799 struct utmpx
*user_info
= NULL
;
2800 gpointer value
= NULL
;
2801 GuestUser
*user
= NULL
;
2802 GuestUserList
*item
= NULL
;
2803 double login_time
= 0;
2805 cache
= g_hash_table_new(g_str_hash
, g_str_equal
);
2809 user_info
= getutxent();
2810 if (user_info
== NULL
) {
2812 } else if (user_info
->ut_type
!= USER_PROCESS
) {
2814 } else if (g_hash_table_contains(cache
, user_info
->ut_user
)) {
2815 value
= g_hash_table_lookup(cache
, user_info
->ut_user
);
2816 user
= (GuestUser
*)value
;
2817 login_time
= ga_get_login_time(user_info
);
2818 /* We're ensuring the earliest login time to be sent */
2819 if (login_time
< user
->login_time
) {
2820 user
->login_time
= login_time
;
2825 item
= g_new0(GuestUserList
, 1);
2826 item
->value
= g_new0(GuestUser
, 1);
2827 item
->value
->user
= g_strdup(user_info
->ut_user
);
2828 item
->value
->login_time
= ga_get_login_time(user_info
);
2830 g_hash_table_insert(cache
, item
->value
->user
, item
->value
);
2833 head
= cur_item
= item
;
2835 cur_item
->next
= item
;
2840 g_hash_table_destroy(cache
);
2846 GuestUserList
*qmp_guest_get_users(Error
**errp
)
2848 error_setg(errp
, QERR_UNSUPPORTED
);
2854 /* Replace escaped special characters with theire real values. The replacement
2855 * is done in place -- returned value is in the original string.
2857 static void ga_osrelease_replace_special(gchar
*value
)
2859 gchar
*p
, *p2
, quote
;
2861 /* Trim the string at first space or semicolon if it is not enclosed in
2862 * single or double quotes. */
2863 if ((value
[0] != '"') || (value
[0] == '\'')) {
2864 p
= strchr(value
, ' ');
2868 p
= strchr(value
, ';');
2889 /* Keep literal backslash followed by whatever is there */
2893 } else if (*p
== quote
) {
2901 static GKeyFile
*ga_parse_osrelease(const char *fname
)
2903 gchar
*content
= NULL
;
2904 gchar
*content2
= NULL
;
2906 GKeyFile
*keys
= g_key_file_new();
2907 const char *group
= "[os-release]\n";
2909 if (!g_file_get_contents(fname
, &content
, NULL
, &err
)) {
2910 slog("failed to read '%s', error: %s", fname
, err
->message
);
2914 if (!g_utf8_validate(content
, -1, NULL
)) {
2915 slog("file is not utf-8 encoded: %s", fname
);
2918 content2
= g_strdup_printf("%s%s", group
, content
);
2920 if (!g_key_file_load_from_data(keys
, content2
, -1, G_KEY_FILE_NONE
,
2922 slog("failed to parse file '%s', error: %s", fname
, err
->message
);
2934 g_key_file_free(keys
);
2938 GuestOSInfo
*qmp_guest_get_osinfo(Error
**errp
)
2940 GuestOSInfo
*info
= NULL
;
2941 struct utsname kinfo
;
2942 GKeyFile
*osrelease
= NULL
;
2943 const char *qga_os_release
= g_getenv("QGA_OS_RELEASE");
2945 info
= g_new0(GuestOSInfo
, 1);
2947 if (uname(&kinfo
) != 0) {
2948 error_setg_errno(errp
, errno
, "uname failed");
2950 info
->has_kernel_version
= true;
2951 info
->kernel_version
= g_strdup(kinfo
.version
);
2952 info
->has_kernel_release
= true;
2953 info
->kernel_release
= g_strdup(kinfo
.release
);
2954 info
->has_machine
= true;
2955 info
->machine
= g_strdup(kinfo
.machine
);
2958 if (qga_os_release
!= NULL
) {
2959 osrelease
= ga_parse_osrelease(qga_os_release
);
2961 osrelease
= ga_parse_osrelease("/etc/os-release");
2962 if (osrelease
== NULL
) {
2963 osrelease
= ga_parse_osrelease("/usr/lib/os-release");
2967 if (osrelease
!= NULL
) {
2970 #define GET_FIELD(field, osfield) do { \
2971 value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \
2972 if (value != NULL) { \
2973 ga_osrelease_replace_special(value); \
2974 info->has_ ## field = true; \
2975 info->field = value; \
2978 GET_FIELD(id
, "ID");
2979 GET_FIELD(name
, "NAME");
2980 GET_FIELD(pretty_name
, "PRETTY_NAME");
2981 GET_FIELD(version
, "VERSION");
2982 GET_FIELD(version_id
, "VERSION_ID");
2983 GET_FIELD(variant
, "VARIANT");
2984 GET_FIELD(variant_id
, "VARIANT_ID");
2987 g_key_file_free(osrelease
);