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Diffstat (limited to 'qga/commands-posix.c')
-rw-r--r--qga/commands-posix.c2052
1 files changed, 28 insertions, 2024 deletions
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 7f05996..12bc086 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -18,29 +18,17 @@
#include <dirent.h>
#include "qga-qapi-commands.h"
#include "qapi/error.h"
-#include "qapi/qmp/qerror.h"
#include "qemu/host-utils.h"
#include "qemu/sockets.h"
#include "qemu/base64.h"
#include "qemu/cutils.h"
#include "commands-common.h"
-#include "block/nvme.h"
#include "cutils.h"
#ifdef HAVE_UTMPX
#include <utmpx.h>
#endif
-#if defined(__linux__)
-#include <mntent.h>
-#include <sys/statvfs.h>
-#include <linux/nvme_ioctl.h>
-
-#ifdef CONFIG_LIBUDEV
-#include <libudev.h>
-#endif
-#endif
-
#ifdef HAVE_GETIFADDRS
#include <arpa/inet.h>
#include <sys/socket.h>
@@ -59,7 +47,7 @@
#endif
#endif
-static void ga_wait_child(pid_t pid, int *status, Error **errp)
+static bool ga_wait_child(pid_t pid, int *status, Error **errp)
{
pid_t rpid;
@@ -70,10 +58,11 @@ static void ga_wait_child(pid_t pid, int *status, Error **errp)
if (rpid == -1) {
error_setg_errno(errp, errno, "failed to wait for child (pid: %d)",
pid);
- return;
+ return false;
}
g_assert(rpid == pid);
+ return true;
}
static ssize_t ga_pipe_read_str(int fd[2], char **str)
@@ -95,7 +84,7 @@ static ssize_t ga_pipe_read_str(int fd[2], char **str)
*str = g_realloc(*str, len + n + 1);
memcpy(*str + len, buf, n);
len += n;
- *str[len] = '\0';
+ (*str)[len] = '\0';
}
close(fd[0]);
fd[0] = -1;
@@ -178,8 +167,7 @@ static int ga_run_command(const char *argv[], const char *in_str,
goto out;
}
- ga_wait_child(pid, &status, errp);
- if (*errp) {
+ if (!ga_wait_child(pid, &status, errp)) {
goto out;
}
@@ -817,8 +805,10 @@ int64_t qmp_guest_fsfreeze_thaw(Error **errp)
int ret;
ret = qmp_guest_fsfreeze_do_thaw(errp);
+
if (ret >= 0) {
ga_unset_frozen(ga_state);
+ slog("guest-fsthaw called");
execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp);
} else {
ret = 0;
@@ -842,1308 +832,6 @@ static void guest_fsfreeze_cleanup(void)
}
#endif
-/* linux-specific implementations. avoid this if at all possible. */
-#if defined(__linux__)
-#if defined(CONFIG_FSFREEZE)
-
-static char *get_pci_driver(char const *syspath, int pathlen, Error **errp)
-{
- char *path;
- char *dpath;
- char *driver = NULL;
- char buf[PATH_MAX];
- ssize_t len;
-
- path = g_strndup(syspath, pathlen);
- dpath = g_strdup_printf("%s/driver", path);
- len = readlink(dpath, buf, sizeof(buf) - 1);
- if (len != -1) {
- buf[len] = 0;
- driver = g_path_get_basename(buf);
- }
- g_free(dpath);
- g_free(path);
- return driver;
-}
-
-static int compare_uint(const void *_a, const void *_b)
-{
- unsigned int a = *(unsigned int *)_a;
- unsigned int b = *(unsigned int *)_b;
-
- return a < b ? -1 : a > b ? 1 : 0;
-}
-
-/* Walk the specified sysfs and build a sorted list of host or ata numbers */
-static int build_hosts(char const *syspath, char const *host, bool ata,
- unsigned int *hosts, int hosts_max, Error **errp)
-{
- char *path;
- DIR *dir;
- struct dirent *entry;
- int i = 0;
-
- path = g_strndup(syspath, host - syspath);
- dir = opendir(path);
- if (!dir) {
- error_setg_errno(errp, errno, "opendir(\"%s\")", path);
- g_free(path);
- return -1;
- }
-
- while (i < hosts_max) {
- entry = readdir(dir);
- if (!entry) {
- break;
- }
- if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) {
- ++i;
- } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) {
- ++i;
- }
- }
-
- qsort(hosts, i, sizeof(hosts[0]), compare_uint);
-
- g_free(path);
- closedir(dir);
- return i;
-}
-
-/*
- * Store disk device info for devices on the PCI bus.
- * Returns true if information has been stored, or false for failure.
- */
-static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
- GuestDiskAddress *disk,
- Error **errp)
-{
- unsigned int pci[4], host, hosts[8], tgt[3];
- int i, nhosts = 0, pcilen;
- GuestPCIAddress *pciaddr = disk->pci_controller;
- bool has_ata = false, has_host = false, has_tgt = false;
- char *p, *q, *driver = NULL;
- bool ret = false;
-
- p = strstr(syspath, "/devices/pci");
- if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n",
- pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) {
- g_debug("only pci device is supported: sysfs path '%s'", syspath);
- return false;
- }
-
- p += 12 + pcilen;
- while (true) {
- driver = get_pci_driver(syspath, p - syspath, errp);
- if (driver && (g_str_equal(driver, "ata_piix") ||
- g_str_equal(driver, "sym53c8xx") ||
- g_str_equal(driver, "virtio-pci") ||
- g_str_equal(driver, "ahci") ||
- g_str_equal(driver, "nvme") ||
- g_str_equal(driver, "xhci_hcd") ||
- g_str_equal(driver, "ehci-pci"))) {
- break;
- }
-
- g_free(driver);
- if (sscanf(p, "/%x:%x:%x.%x%n",
- pci, pci + 1, pci + 2, pci + 3, &pcilen) == 4) {
- p += pcilen;
- continue;
- }
-
- g_debug("unsupported driver or sysfs path '%s'", syspath);
- return false;
- }
-
- p = strstr(syspath, "/target");
- if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u",
- tgt, tgt + 1, tgt + 2) == 3) {
- has_tgt = true;
- }
-
- p = strstr(syspath, "/ata");
- if (p) {
- q = p + 4;
- has_ata = true;
- } else {
- p = strstr(syspath, "/host");
- q = p + 5;
- }
- if (p && sscanf(q, "%u", &host) == 1) {
- has_host = true;
- nhosts = build_hosts(syspath, p, has_ata, hosts,
- ARRAY_SIZE(hosts), errp);
- if (nhosts < 0) {
- goto cleanup;
- }
- }
-
- pciaddr->domain = pci[0];
- pciaddr->bus = pci[1];
- pciaddr->slot = pci[2];
- pciaddr->function = pci[3];
-
- if (strcmp(driver, "ata_piix") == 0) {
- /* a host per ide bus, target*:0:<unit>:0 */
- if (!has_host || !has_tgt) {
- g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver);
- goto cleanup;
- }
- for (i = 0; i < nhosts; i++) {
- if (host == hosts[i]) {
- disk->bus_type = GUEST_DISK_BUS_TYPE_IDE;
- disk->bus = i;
- disk->unit = tgt[1];
- break;
- }
- }
- if (i >= nhosts) {
- g_debug("no host for '%s' (driver '%s')", syspath, driver);
- goto cleanup;
- }
- } else if (strcmp(driver, "sym53c8xx") == 0) {
- /* scsi(LSI Logic): target*:0:<unit>:0 */
- if (!has_tgt) {
- g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver);
- goto cleanup;
- }
- disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI;
- disk->unit = tgt[1];
- } else if (strcmp(driver, "virtio-pci") == 0) {
- if (has_tgt) {
- /* virtio-scsi: target*:0:0:<unit> */
- disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI;
- disk->unit = tgt[2];
- } else {
- /* virtio-blk: 1 disk per 1 device */
- disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO;
- }
- } else if (strcmp(driver, "ahci") == 0) {
- /* ahci: 1 host per 1 unit */
- if (!has_host || !has_tgt) {
- g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver);
- goto cleanup;
- }
- for (i = 0; i < nhosts; i++) {
- if (host == hosts[i]) {
- disk->unit = i;
- disk->bus_type = GUEST_DISK_BUS_TYPE_SATA;
- break;
- }
- }
- if (i >= nhosts) {
- g_debug("no host for '%s' (driver '%s')", syspath, driver);
- goto cleanup;
- }
- } else if (strcmp(driver, "nvme") == 0) {
- disk->bus_type = GUEST_DISK_BUS_TYPE_NVME;
- } else if (strcmp(driver, "ehci-pci") == 0 || strcmp(driver, "xhci_hcd") == 0) {
- disk->bus_type = GUEST_DISK_BUS_TYPE_USB;
- } else {
- g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath);
- goto cleanup;
- }
-
- ret = true;
-
-cleanup:
- g_free(driver);
- return ret;
-}
-
-/*
- * Store disk device info for non-PCI virtio devices (for example s390x
- * channel I/O devices). Returns true if information has been stored, or
- * false for failure.
- */
-static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath,
- GuestDiskAddress *disk,
- Error **errp)
-{
- unsigned int tgt[3];
- char *p;
-
- if (!strstr(syspath, "/virtio") || !strstr(syspath, "/block")) {
- g_debug("Unsupported virtio device '%s'", syspath);
- return false;
- }
-
- p = strstr(syspath, "/target");
- if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u",
- &tgt[0], &tgt[1], &tgt[2]) == 3) {
- /* virtio-scsi: target*:0:<target>:<unit> */
- disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI;
- disk->bus = tgt[0];
- disk->target = tgt[1];
- disk->unit = tgt[2];
- } else {
- /* virtio-blk: 1 disk per 1 device */
- disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO;
- }
-
- return true;
-}
-
-/*
- * Store disk device info for CCW devices (s390x channel I/O devices).
- * Returns true if information has been stored, or false for failure.
- */
-static bool build_guest_fsinfo_for_ccw_dev(char const *syspath,
- GuestDiskAddress *disk,
- Error **errp)
-{
- unsigned int cssid, ssid, subchno, devno;
- char *p;
-
- p = strstr(syspath, "/devices/css");
- if (!p || sscanf(p + 12, "%*x/%x.%x.%x/%*x.%*x.%x/",
- &cssid, &ssid, &subchno, &devno) < 4) {
- g_debug("could not parse ccw device sysfs path: %s", syspath);
- return false;
- }
-
- disk->ccw_address = g_new0(GuestCCWAddress, 1);
- disk->ccw_address->cssid = cssid;
- disk->ccw_address->ssid = ssid;
- disk->ccw_address->subchno = subchno;
- disk->ccw_address->devno = devno;
-
- if (strstr(p, "/virtio")) {
- build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp);
- }
-
- return true;
-}
-
-/* Store disk device info specified by @sysfs into @fs */
-static void build_guest_fsinfo_for_real_device(char const *syspath,
- GuestFilesystemInfo *fs,
- Error **errp)
-{
- GuestDiskAddress *disk;
- GuestPCIAddress *pciaddr;
- bool has_hwinf;
-#ifdef CONFIG_LIBUDEV
- struct udev *udev = NULL;
- struct udev_device *udevice = NULL;
-#endif
-
- pciaddr = g_new0(GuestPCIAddress, 1);
- pciaddr->domain = -1; /* -1 means field is invalid */
- pciaddr->bus = -1;
- pciaddr->slot = -1;
- pciaddr->function = -1;
-
- disk = g_new0(GuestDiskAddress, 1);
- disk->pci_controller = pciaddr;
- disk->bus_type = GUEST_DISK_BUS_TYPE_UNKNOWN;
-
-#ifdef CONFIG_LIBUDEV
- udev = udev_new();
- udevice = udev_device_new_from_syspath(udev, syspath);
- if (udev == NULL || udevice == NULL) {
- g_debug("failed to query udev");
- } else {
- const char *devnode, *serial;
- devnode = udev_device_get_devnode(udevice);
- if (devnode != NULL) {
- disk->dev = g_strdup(devnode);
- }
- serial = udev_device_get_property_value(udevice, "ID_SERIAL");
- if (serial != NULL && *serial != 0) {
- disk->serial = g_strdup(serial);
- }
- }
-
- udev_unref(udev);
- udev_device_unref(udevice);
-#endif
-
- if (strstr(syspath, "/devices/pci")) {
- has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp);
- } else if (strstr(syspath, "/devices/css")) {
- has_hwinf = build_guest_fsinfo_for_ccw_dev(syspath, disk, errp);
- } else if (strstr(syspath, "/virtio")) {
- has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp);
- } else {
- g_debug("Unsupported device type for '%s'", syspath);
- has_hwinf = false;
- }
-
- if (has_hwinf || disk->dev || disk->serial) {
- QAPI_LIST_PREPEND(fs->disk, disk);
- } else {
- qapi_free_GuestDiskAddress(disk);
- }
-}
-
-static void build_guest_fsinfo_for_device(char const *devpath,
- GuestFilesystemInfo *fs,
- Error **errp);
-
-/* Store a list of slave devices of virtual volume specified by @syspath into
- * @fs */
-static void build_guest_fsinfo_for_virtual_device(char const *syspath,
- GuestFilesystemInfo *fs,
- Error **errp)
-{
- Error *err = NULL;
- DIR *dir;
- char *dirpath;
- struct dirent *entry;
-
- dirpath = g_strdup_printf("%s/slaves", syspath);
- dir = opendir(dirpath);
- if (!dir) {
- if (errno != ENOENT) {
- error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath);
- }
- g_free(dirpath);
- return;
- }
-
- for (;;) {
- errno = 0;
- entry = readdir(dir);
- if (entry == NULL) {
- if (errno) {
- error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath);
- }
- break;
- }
-
- if (entry->d_type == DT_LNK) {
- char *path;
-
- g_debug(" slave device '%s'", entry->d_name);
- path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name);
- build_guest_fsinfo_for_device(path, fs, &err);
- g_free(path);
-
- if (err) {
- error_propagate(errp, err);
- break;
- }
- }
- }
-
- g_free(dirpath);
- closedir(dir);
-}
-
-static bool is_disk_virtual(const char *devpath, Error **errp)
-{
- g_autofree char *syspath = realpath(devpath, NULL);
-
- if (!syspath) {
- error_setg_errno(errp, errno, "realpath(\"%s\")", devpath);
- return false;
- }
- return strstr(syspath, "/devices/virtual/block/") != NULL;
-}
-
-/* Dispatch to functions for virtual/real device */
-static void build_guest_fsinfo_for_device(char const *devpath,
- GuestFilesystemInfo *fs,
- Error **errp)
-{
- ERRP_GUARD();
- g_autofree char *syspath = NULL;
- bool is_virtual = false;
-
- syspath = realpath(devpath, NULL);
- if (!syspath) {
- if (errno != ENOENT) {
- error_setg_errno(errp, errno, "realpath(\"%s\")", devpath);
- return;
- }
-
- /* ENOENT: This devpath may not exist because of container config */
- if (!fs->name) {
- fs->name = g_path_get_basename(devpath);
- }
- return;
- }
-
- if (!fs->name) {
- fs->name = g_path_get_basename(syspath);
- }
-
- g_debug(" parse sysfs path '%s'", syspath);
- is_virtual = is_disk_virtual(syspath, errp);
- if (*errp != NULL) {
- return;
- }
- if (is_virtual) {
- build_guest_fsinfo_for_virtual_device(syspath, fs, errp);
- } else {
- build_guest_fsinfo_for_real_device(syspath, fs, errp);
- }
-}
-
-#ifdef CONFIG_LIBUDEV
-
-/*
- * Wrapper around build_guest_fsinfo_for_device() for getting just
- * the disk address.
- */
-static GuestDiskAddress *get_disk_address(const char *syspath, Error **errp)
-{
- g_autoptr(GuestFilesystemInfo) fs = NULL;
-
- fs = g_new0(GuestFilesystemInfo, 1);
- build_guest_fsinfo_for_device(syspath, fs, errp);
- if (fs->disk != NULL) {
- return g_steal_pointer(&fs->disk->value);
- }
- return NULL;
-}
-
-static char *get_alias_for_syspath(const char *syspath)
-{
- struct udev *udev = NULL;
- struct udev_device *udevice = NULL;
- char *ret = NULL;
-
- udev = udev_new();
- if (udev == NULL) {
- g_debug("failed to query udev");
- goto out;
- }
- udevice = udev_device_new_from_syspath(udev, syspath);
- if (udevice == NULL) {
- g_debug("failed to query udev for path: %s", syspath);
- goto out;
- } else {
- const char *alias = udev_device_get_property_value(
- udevice, "DM_NAME");
- /*
- * NULL means there was an error and empty string means there is no
- * alias. In case of no alias we return NULL instead of empty string.
- */
- if (alias == NULL) {
- g_debug("failed to query udev for device alias for: %s",
- syspath);
- } else if (*alias != 0) {
- ret = g_strdup(alias);
- }
- }
-
-out:
- udev_unref(udev);
- udev_device_unref(udevice);
- return ret;
-}
-
-static char *get_device_for_syspath(const char *syspath)
-{
- struct udev *udev = NULL;
- struct udev_device *udevice = NULL;
- char *ret = NULL;
-
- udev = udev_new();
- if (udev == NULL) {
- g_debug("failed to query udev");
- goto out;
- }
- udevice = udev_device_new_from_syspath(udev, syspath);
- if (udevice == NULL) {
- g_debug("failed to query udev for path: %s", syspath);
- goto out;
- } else {
- ret = g_strdup(udev_device_get_devnode(udevice));
- }
-
-out:
- udev_unref(udev);
- udev_device_unref(udevice);
- return ret;
-}
-
-static void get_disk_deps(const char *disk_dir, GuestDiskInfo *disk)
-{
- g_autofree char *deps_dir = NULL;
- const gchar *dep;
- GDir *dp_deps = NULL;
-
- /* List dependent disks */
- deps_dir = g_strdup_printf("%s/slaves", disk_dir);
- g_debug(" listing entries in: %s", deps_dir);
- dp_deps = g_dir_open(deps_dir, 0, NULL);
- if (dp_deps == NULL) {
- g_debug("failed to list entries in %s", deps_dir);
- return;
- }
- disk->has_dependencies = true;
- while ((dep = g_dir_read_name(dp_deps)) != NULL) {
- g_autofree char *dep_dir = NULL;
- char *dev_name;
-
- /* Add dependent disks */
- dep_dir = g_strdup_printf("%s/%s", deps_dir, dep);
- dev_name = get_device_for_syspath(dep_dir);
- if (dev_name != NULL) {
- g_debug(" adding dependent device: %s", dev_name);
- QAPI_LIST_PREPEND(disk->dependencies, dev_name);
- }
- }
- g_dir_close(dp_deps);
-}
-
-/*
- * Detect partitions subdirectory, name is "<disk_name><number>" or
- * "<disk_name>p<number>"
- *
- * @disk_name -- last component of /sys path (e.g. sda)
- * @disk_dir -- sys path of the disk (e.g. /sys/block/sda)
- * @disk_dev -- device node of the disk (e.g. /dev/sda)
- */
-static GuestDiskInfoList *get_disk_partitions(
- GuestDiskInfoList *list,
- const char *disk_name, const char *disk_dir,
- const char *disk_dev)
-{
- GuestDiskInfoList *ret = list;
- struct dirent *de_disk;
- DIR *dp_disk = NULL;
- size_t len = strlen(disk_name);
-
- dp_disk = opendir(disk_dir);
- while ((de_disk = readdir(dp_disk)) != NULL) {
- g_autofree char *partition_dir = NULL;
- char *dev_name;
- GuestDiskInfo *partition;
-
- if (!(de_disk->d_type & DT_DIR)) {
- continue;
- }
-
- if (!(strncmp(disk_name, de_disk->d_name, len) == 0 &&
- ((*(de_disk->d_name + len) == 'p' &&
- isdigit(*(de_disk->d_name + len + 1))) ||
- isdigit(*(de_disk->d_name + len))))) {
- continue;
- }
-
- partition_dir = g_strdup_printf("%s/%s",
- disk_dir, de_disk->d_name);
- dev_name = get_device_for_syspath(partition_dir);
- if (dev_name == NULL) {
- g_debug("Failed to get device name for syspath: %s",
- disk_dir);
- continue;
- }
- partition = g_new0(GuestDiskInfo, 1);
- partition->name = dev_name;
- partition->partition = true;
- partition->has_dependencies = true;
- /* Add parent disk as dependent for easier tracking of hierarchy */
- QAPI_LIST_PREPEND(partition->dependencies, g_strdup(disk_dev));
-
- QAPI_LIST_PREPEND(ret, partition);
- }
- closedir(dp_disk);
-
- return ret;
-}
-
-static void get_nvme_smart(GuestDiskInfo *disk)
-{
- int fd;
- GuestNVMeSmart *smart;
- NvmeSmartLog log = {0};
- struct nvme_admin_cmd cmd = {
- .opcode = NVME_ADM_CMD_GET_LOG_PAGE,
- .nsid = NVME_NSID_BROADCAST,
- .addr = (uintptr_t)&log,
- .data_len = sizeof(log),
- .cdw10 = NVME_LOG_SMART_INFO | (1 << 15) /* RAE bit */
- | (((sizeof(log) >> 2) - 1) << 16)
- };
-
- fd = qga_open_cloexec(disk->name, O_RDONLY, 0);
- if (fd == -1) {
- g_debug("Failed to open device: %s: %s", disk->name, g_strerror(errno));
- return;
- }
-
- if (ioctl(fd, NVME_IOCTL_ADMIN_CMD, &cmd)) {
- g_debug("Failed to get smart: %s: %s", disk->name, g_strerror(errno));
- close(fd);
- return;
- }
-
- disk->smart = g_new0(GuestDiskSmart, 1);
- disk->smart->type = GUEST_DISK_BUS_TYPE_NVME;
-
- smart = &disk->smart->u.nvme;
- smart->critical_warning = log.critical_warning;
- smart->temperature = lduw_le_p(&log.temperature); /* unaligned field */
- smart->available_spare = log.available_spare;
- smart->available_spare_threshold = log.available_spare_threshold;
- smart->percentage_used = log.percentage_used;
- smart->data_units_read_lo = le64_to_cpu(log.data_units_read[0]);
- smart->data_units_read_hi = le64_to_cpu(log.data_units_read[1]);
- smart->data_units_written_lo = le64_to_cpu(log.data_units_written[0]);
- smart->data_units_written_hi = le64_to_cpu(log.data_units_written[1]);
- smart->host_read_commands_lo = le64_to_cpu(log.host_read_commands[0]);
- smart->host_read_commands_hi = le64_to_cpu(log.host_read_commands[1]);
- smart->host_write_commands_lo = le64_to_cpu(log.host_write_commands[0]);
- smart->host_write_commands_hi = le64_to_cpu(log.host_write_commands[1]);
- smart->controller_busy_time_lo = le64_to_cpu(log.controller_busy_time[0]);
- smart->controller_busy_time_hi = le64_to_cpu(log.controller_busy_time[1]);
- smart->power_cycles_lo = le64_to_cpu(log.power_cycles[0]);
- smart->power_cycles_hi = le64_to_cpu(log.power_cycles[1]);
- smart->power_on_hours_lo = le64_to_cpu(log.power_on_hours[0]);
- smart->power_on_hours_hi = le64_to_cpu(log.power_on_hours[1]);
- smart->unsafe_shutdowns_lo = le64_to_cpu(log.unsafe_shutdowns[0]);
- smart->unsafe_shutdowns_hi = le64_to_cpu(log.unsafe_shutdowns[1]);
- smart->media_errors_lo = le64_to_cpu(log.media_errors[0]);
- smart->media_errors_hi = le64_to_cpu(log.media_errors[1]);
- smart->number_of_error_log_entries_lo =
- le64_to_cpu(log.number_of_error_log_entries[0]);
- smart->number_of_error_log_entries_hi =
- le64_to_cpu(log.number_of_error_log_entries[1]);
-
- close(fd);
-}
-
-static void get_disk_smart(GuestDiskInfo *disk)
-{
- if (disk->address
- && (disk->address->bus_type == GUEST_DISK_BUS_TYPE_NVME)) {
- get_nvme_smart(disk);
- }
-}
-
-GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
-{
- GuestDiskInfoList *ret = NULL;
- GuestDiskInfo *disk;
- DIR *dp = NULL;
- struct dirent *de = NULL;
-
- g_debug("listing /sys/block directory");
- dp = opendir("/sys/block");
- if (dp == NULL) {
- error_setg_errno(errp, errno, "Can't open directory \"/sys/block\"");
- return NULL;
- }
- while ((de = readdir(dp)) != NULL) {
- g_autofree char *disk_dir = NULL, *line = NULL,
- *size_path = NULL;
- char *dev_name;
- Error *local_err = NULL;
- if (de->d_type != DT_LNK) {
- g_debug(" skipping entry: %s", de->d_name);
- continue;
- }
-
- /* Check size and skip zero-sized disks */
- g_debug(" checking disk size");
- size_path = g_strdup_printf("/sys/block/%s/size", de->d_name);
- if (!g_file_get_contents(size_path, &line, NULL, NULL)) {
- g_debug(" failed to read disk size");
- continue;
- }
- if (g_strcmp0(line, "0\n") == 0) {
- g_debug(" skipping zero-sized disk");
- continue;
- }
-
- g_debug(" adding %s", de->d_name);
- disk_dir = g_strdup_printf("/sys/block/%s", de->d_name);
- dev_name = get_device_for_syspath(disk_dir);
- if (dev_name == NULL) {
- g_debug("Failed to get device name for syspath: %s",
- disk_dir);
- continue;
- }
- disk = g_new0(GuestDiskInfo, 1);
- disk->name = dev_name;
- disk->partition = false;
- disk->alias = get_alias_for_syspath(disk_dir);
- QAPI_LIST_PREPEND(ret, disk);
-
- /* Get address for non-virtual devices */
- bool is_virtual = is_disk_virtual(disk_dir, &local_err);
- if (local_err != NULL) {
- g_debug(" failed to check disk path, ignoring error: %s",
- error_get_pretty(local_err));
- error_free(local_err);
- local_err = NULL;
- /* Don't try to get the address */
- is_virtual = true;
- }
- if (!is_virtual) {
- disk->address = get_disk_address(disk_dir, &local_err);
- if (local_err != NULL) {
- g_debug(" failed to get device info, ignoring error: %s",
- error_get_pretty(local_err));
- error_free(local_err);
- local_err = NULL;
- }
- }
-
- get_disk_deps(disk_dir, disk);
- get_disk_smart(disk);
- ret = get_disk_partitions(ret, de->d_name, disk_dir, dev_name);
- }
-
- closedir(dp);
-
- return ret;
-}
-
-#else
-
-GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-#endif
-
-/* Return a list of the disk device(s)' info which @mount lies on */
-static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount,
- Error **errp)
-{
- GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs));
- struct statvfs buf;
- unsigned long used, nonroot_total, fr_size;
- char *devpath = g_strdup_printf("/sys/dev/block/%u:%u",
- mount->devmajor, mount->devminor);
-
- fs->mountpoint = g_strdup(mount->dirname);
- fs->type = g_strdup(mount->devtype);
- build_guest_fsinfo_for_device(devpath, fs, errp);
-
- if (statvfs(fs->mountpoint, &buf) == 0) {
- fr_size = buf.f_frsize;
- used = buf.f_blocks - buf.f_bfree;
- nonroot_total = used + buf.f_bavail;
- fs->used_bytes = used * fr_size;
- fs->total_bytes = nonroot_total * fr_size;
- fs->total_bytes_privileged = buf.f_blocks * fr_size;
-
- fs->has_total_bytes = true;
- fs->has_total_bytes_privileged = true;
- fs->has_used_bytes = true;
- }
-
- g_free(devpath);
-
- return fs;
-}
-
-GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
-{
- FsMountList mounts;
- struct FsMount *mount;
- GuestFilesystemInfoList *ret = NULL;
- Error *local_err = NULL;
-
- QTAILQ_INIT(&mounts);
- if (!build_fs_mount_list(&mounts, &local_err)) {
- error_propagate(errp, local_err);
- return NULL;
- }
-
- QTAILQ_FOREACH(mount, &mounts, next) {
- g_debug("Building guest fsinfo for '%s'", mount->dirname);
-
- QAPI_LIST_PREPEND(ret, build_guest_fsinfo(mount, &local_err));
- if (local_err) {
- error_propagate(errp, local_err);
- qapi_free_GuestFilesystemInfoList(ret);
- ret = NULL;
- break;
- }
- }
-
- free_fs_mount_list(&mounts);
- return ret;
-}
-#endif /* CONFIG_FSFREEZE */
-
-#if defined(CONFIG_FSTRIM)
-/*
- * Walk list of mounted file systems in the guest, and trim them.
- */
-GuestFilesystemTrimResponse *
-qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
-{
- GuestFilesystemTrimResponse *response;
- GuestFilesystemTrimResult *result;
- int ret = 0;
- FsMountList mounts;
- struct FsMount *mount;
- int fd;
- struct fstrim_range r;
-
- slog("guest-fstrim called");
-
- QTAILQ_INIT(&mounts);
- if (!build_fs_mount_list(&mounts, errp)) {
- return NULL;
- }
-
- response = g_malloc0(sizeof(*response));
-
- QTAILQ_FOREACH(mount, &mounts, next) {
- result = g_malloc0(sizeof(*result));
- result->path = g_strdup(mount->dirname);
-
- QAPI_LIST_PREPEND(response->paths, result);
-
- fd = qga_open_cloexec(mount->dirname, O_RDONLY, 0);
- if (fd == -1) {
- result->error = g_strdup_printf("failed to open: %s",
- strerror(errno));
- continue;
- }
-
- /* We try to cull filesystems we know won't work in advance, but other
- * filesystems may not implement fstrim for less obvious reasons.
- * These will report EOPNOTSUPP; while in some other cases ENOTTY
- * will be reported (e.g. CD-ROMs).
- * Any other error means an unexpected error.
- */
- r.start = 0;
- r.len = -1;
- r.minlen = has_minimum ? minimum : 0;
- ret = ioctl(fd, FITRIM, &r);
- if (ret == -1) {
- if (errno == ENOTTY || errno == EOPNOTSUPP) {
- result->error = g_strdup("trim not supported");
- } else {
- result->error = g_strdup_printf("failed to trim: %s",
- strerror(errno));
- }
- close(fd);
- continue;
- }
-
- result->has_minimum = true;
- result->minimum = r.minlen;
- result->has_trimmed = true;
- result->trimmed = r.len;
- close(fd);
- }
-
- free_fs_mount_list(&mounts);
- return response;
-}
-#endif /* CONFIG_FSTRIM */
-
-
-#define LINUX_SYS_STATE_FILE "/sys/power/state"
-#define SUSPEND_SUPPORTED 0
-#define SUSPEND_NOT_SUPPORTED 1
-
-typedef enum {
- SUSPEND_MODE_DISK = 0,
- SUSPEND_MODE_RAM = 1,
- SUSPEND_MODE_HYBRID = 2,
-} SuspendMode;
-
-/*
- * Executes a command in a child process using g_spawn_sync,
- * returning an int >= 0 representing the exit status of the
- * process.
- *
- * If the program wasn't found in path, returns -1.
- *
- * If a problem happened when creating the child process,
- * returns -1 and errp is set.
- */
-static int run_process_child(const char *command[], Error **errp)
-{
- int exit_status, spawn_flag;
- GError *g_err = NULL;
- bool success;
-
- spawn_flag = G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL |
- G_SPAWN_STDERR_TO_DEV_NULL;
-
- success = g_spawn_sync(NULL, (char **)command, NULL, spawn_flag,
- NULL, NULL, NULL, NULL,
- &exit_status, &g_err);
-
- if (success) {
- return WEXITSTATUS(exit_status);
- }
-
- if (g_err && (g_err->code != G_SPAWN_ERROR_NOENT)) {
- error_setg(errp, "failed to create child process, error '%s'",
- g_err->message);
- }
-
- g_error_free(g_err);
- return -1;
-}
-
-static bool systemd_supports_mode(SuspendMode mode, Error **errp)
-{
- const char *systemctl_args[3] = {"systemd-hibernate", "systemd-suspend",
- "systemd-hybrid-sleep"};
- const char *cmd[4] = {"systemctl", "status", systemctl_args[mode], NULL};
- int status;
-
- status = run_process_child(cmd, errp);
-
- /*
- * systemctl status uses LSB return codes so we can expect
- * status > 0 and be ok. To assert if the guest has support
- * for the selected suspend mode, status should be < 4. 4 is
- * the code for unknown service status, the return value when
- * the service does not exist. A common value is status = 3
- * (program is not running).
- */
- if (status > 0 && status < 4) {
- return true;
- }
-
- return false;
-}
-
-static void systemd_suspend(SuspendMode mode, Error **errp)
-{
- Error *local_err = NULL;
- const char *systemctl_args[3] = {"hibernate", "suspend", "hybrid-sleep"};
- const char *cmd[3] = {"systemctl", systemctl_args[mode], NULL};
- int status;
-
- status = run_process_child(cmd, &local_err);
-
- if (status == 0) {
- return;
- }
-
- if ((status == -1) && !local_err) {
- error_setg(errp, "the helper program 'systemctl %s' was not found",
- systemctl_args[mode]);
- return;
- }
-
- if (local_err) {
- error_propagate(errp, local_err);
- } else {
- error_setg(errp, "the helper program 'systemctl %s' returned an "
- "unexpected exit status code (%d)",
- systemctl_args[mode], status);
- }
-}
-
-static bool pmutils_supports_mode(SuspendMode mode, Error **errp)
-{
- Error *local_err = NULL;
- const char *pmutils_args[3] = {"--hibernate", "--suspend",
- "--suspend-hybrid"};
- const char *cmd[3] = {"pm-is-supported", pmutils_args[mode], NULL};
- int status;
-
- status = run_process_child(cmd, &local_err);
-
- if (status == SUSPEND_SUPPORTED) {
- return true;
- }
-
- if ((status == -1) && !local_err) {
- return false;
- }
-
- if (local_err) {
- error_propagate(errp, local_err);
- } else {
- error_setg(errp,
- "the helper program '%s' returned an unexpected exit"
- " status code (%d)", "pm-is-supported", status);
- }
-
- return false;
-}
-
-static void pmutils_suspend(SuspendMode mode, Error **errp)
-{
- Error *local_err = NULL;
- const char *pmutils_binaries[3] = {"pm-hibernate", "pm-suspend",
- "pm-suspend-hybrid"};
- const char *cmd[2] = {pmutils_binaries[mode], NULL};
- int status;
-
- status = run_process_child(cmd, &local_err);
-
- if (status == 0) {
- return;
- }
-
- if ((status == -1) && !local_err) {
- error_setg(errp, "the helper program '%s' was not found",
- pmutils_binaries[mode]);
- return;
- }
-
- if (local_err) {
- error_propagate(errp, local_err);
- } else {
- error_setg(errp,
- "the helper program '%s' returned an unexpected exit"
- " status code (%d)", pmutils_binaries[mode], status);
- }
-}
-
-static bool linux_sys_state_supports_mode(SuspendMode mode, Error **errp)
-{
- const char *sysfile_strs[3] = {"disk", "mem", NULL};
- const char *sysfile_str = sysfile_strs[mode];
- char buf[32]; /* hopefully big enough */
- int fd;
- ssize_t ret;
-
- if (!sysfile_str) {
- error_setg(errp, "unknown guest suspend mode");
- return false;
- }
-
- fd = open(LINUX_SYS_STATE_FILE, O_RDONLY);
- if (fd < 0) {
- return false;
- }
-
- ret = read(fd, buf, sizeof(buf) - 1);
- close(fd);
- if (ret <= 0) {
- return false;
- }
- buf[ret] = '\0';
-
- if (strstr(buf, sysfile_str)) {
- return true;
- }
- return false;
-}
-
-static void linux_sys_state_suspend(SuspendMode mode, Error **errp)
-{
- g_autoptr(GError) local_gerr = NULL;
- const char *sysfile_strs[3] = {"disk", "mem", NULL};
- const char *sysfile_str = sysfile_strs[mode];
-
- if (!sysfile_str) {
- error_setg(errp, "unknown guest suspend mode");
- return;
- }
-
- if (!g_file_set_contents(LINUX_SYS_STATE_FILE, sysfile_str,
- -1, &local_gerr)) {
- error_setg(errp, "suspend: cannot write to '%s': %s",
- LINUX_SYS_STATE_FILE, local_gerr->message);
- return;
- }
-}
-
-static void guest_suspend(SuspendMode mode, Error **errp)
-{
- Error *local_err = NULL;
- bool mode_supported = false;
-
- if (systemd_supports_mode(mode, &local_err)) {
- mode_supported = true;
- systemd_suspend(mode, &local_err);
-
- if (!local_err) {
- return;
- }
- }
-
- error_free(local_err);
- local_err = NULL;
-
- if (pmutils_supports_mode(mode, &local_err)) {
- mode_supported = true;
- pmutils_suspend(mode, &local_err);
-
- if (!local_err) {
- return;
- }
- }
-
- error_free(local_err);
- local_err = NULL;
-
- if (linux_sys_state_supports_mode(mode, &local_err)) {
- mode_supported = true;
- linux_sys_state_suspend(mode, &local_err);
- }
-
- if (!mode_supported) {
- error_free(local_err);
- error_setg(errp,
- "the requested suspend mode is not supported by the guest");
- } else {
- error_propagate(errp, local_err);
- }
-}
-
-void qmp_guest_suspend_disk(Error **errp)
-{
- guest_suspend(SUSPEND_MODE_DISK, errp);
-}
-
-void qmp_guest_suspend_ram(Error **errp)
-{
- guest_suspend(SUSPEND_MODE_RAM, errp);
-}
-
-void qmp_guest_suspend_hybrid(Error **errp)
-{
- guest_suspend(SUSPEND_MODE_HYBRID, errp);
-}
-
-/* Transfer online/offline status between @vcpu and the guest system.
- *
- * On input either @errp or *@errp must be NULL.
- *
- * In system-to-@vcpu direction, the following @vcpu fields are accessed:
- * - R: vcpu->logical_id
- * - W: vcpu->online
- * - W: vcpu->can_offline
- *
- * In @vcpu-to-system direction, the following @vcpu fields are accessed:
- * - R: vcpu->logical_id
- * - R: vcpu->online
- *
- * Written members remain unmodified on error.
- */
-static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu,
- char *dirpath, Error **errp)
-{
- int fd;
- int res;
- int dirfd;
- static const char fn[] = "online";
-
- dirfd = open(dirpath, O_RDONLY | O_DIRECTORY);
- if (dirfd == -1) {
- error_setg_errno(errp, errno, "open(\"%s\")", dirpath);
- return;
- }
-
- fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR);
- if (fd == -1) {
- if (errno != ENOENT) {
- error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn);
- } else if (sys2vcpu) {
- vcpu->online = true;
- vcpu->can_offline = false;
- } else if (!vcpu->online) {
- error_setg(errp, "logical processor #%" PRId64 " can't be "
- "offlined", vcpu->logical_id);
- } /* otherwise pretend successful re-onlining */
- } else {
- unsigned char status;
-
- res = pread(fd, &status, 1, 0);
- if (res == -1) {
- error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn);
- } else if (res == 0) {
- error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath,
- fn);
- } else if (sys2vcpu) {
- vcpu->online = (status != '0');
- vcpu->can_offline = true;
- } else if (vcpu->online != (status != '0')) {
- status = '0' + vcpu->online;
- if (pwrite(fd, &status, 1, 0) == -1) {
- error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath,
- fn);
- }
- } /* otherwise pretend successful re-(on|off)-lining */
-
- res = close(fd);
- g_assert(res == 0);
- }
-
- res = close(dirfd);
- g_assert(res == 0);
-}
-
-GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
-{
- GuestLogicalProcessorList *head, **tail;
- const char *cpu_dir = "/sys/devices/system/cpu";
- const gchar *line;
- g_autoptr(GDir) cpu_gdir = NULL;
- Error *local_err = NULL;
-
- head = NULL;
- tail = &head;
- cpu_gdir = g_dir_open(cpu_dir, 0, NULL);
-
- if (cpu_gdir == NULL) {
- error_setg_errno(errp, errno, "failed to list entries: %s", cpu_dir);
- return NULL;
- }
-
- while (local_err == NULL && (line = g_dir_read_name(cpu_gdir)) != NULL) {
- GuestLogicalProcessor *vcpu;
- int64_t id;
- if (sscanf(line, "cpu%" PRId64, &id)) {
- g_autofree char *path = g_strdup_printf("/sys/devices/system/cpu/"
- "cpu%" PRId64 "/", id);
- vcpu = g_malloc0(sizeof *vcpu);
- vcpu->logical_id = id;
- vcpu->has_can_offline = true; /* lolspeak ftw */
- transfer_vcpu(vcpu, true, path, &local_err);
- QAPI_LIST_APPEND(tail, vcpu);
- }
- }
-
- if (local_err == NULL) {
- /* there's no guest with zero VCPUs */
- g_assert(head != NULL);
- return head;
- }
-
- qapi_free_GuestLogicalProcessorList(head);
- error_propagate(errp, local_err);
- return NULL;
-}
-
-int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
-{
- int64_t processed;
- Error *local_err = NULL;
-
- processed = 0;
- while (vcpus != NULL) {
- char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/",
- vcpus->value->logical_id);
-
- transfer_vcpu(vcpus->value, false, path, &local_err);
- g_free(path);
- if (local_err != NULL) {
- break;
- }
- ++processed;
- vcpus = vcpus->next;
- }
-
- if (local_err != NULL) {
- if (processed == 0) {
- error_propagate(errp, local_err);
- } else {
- error_free(local_err);
- }
- }
-
- return processed;
-}
-#endif /* __linux__ */
-
#if defined(__linux__) || defined(__FreeBSD__)
void qmp_guest_set_user_password(const char *username,
const char *password,
@@ -2190,574 +878,8 @@ void qmp_guest_set_user_password(const char *username,
return;
}
}
-#else /* __linux__ || __FreeBSD__ */
-void qmp_guest_set_user_password(const char *username,
- const char *password,
- bool crypted,
- Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-}
#endif /* __linux__ || __FreeBSD__ */
-#ifdef __linux__
-static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf,
- int size, Error **errp)
-{
- int fd;
- int res;
-
- errno = 0;
- fd = openat(dirfd, pathname, O_RDONLY);
- if (fd == -1) {
- error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname);
- return;
- }
-
- res = pread(fd, buf, size, 0);
- if (res == -1) {
- error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname);
- } else if (res == 0) {
- error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname);
- }
- close(fd);
-}
-
-static void ga_write_sysfs_file(int dirfd, const char *pathname,
- const char *buf, int size, Error **errp)
-{
- int fd;
-
- errno = 0;
- fd = openat(dirfd, pathname, O_WRONLY);
- if (fd == -1) {
- error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname);
- return;
- }
-
- if (pwrite(fd, buf, size, 0) == -1) {
- error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname);
- }
-
- close(fd);
-}
-
-/* Transfer online/offline status between @mem_blk and the guest system.
- *
- * On input either @errp or *@errp must be NULL.
- *
- * In system-to-@mem_blk direction, the following @mem_blk fields are accessed:
- * - R: mem_blk->phys_index
- * - W: mem_blk->online
- * - W: mem_blk->can_offline
- *
- * In @mem_blk-to-system direction, the following @mem_blk fields are accessed:
- * - R: mem_blk->phys_index
- * - R: mem_blk->online
- *- R: mem_blk->can_offline
- * Written members remain unmodified on error.
- */
-static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk,
- GuestMemoryBlockResponse *result,
- Error **errp)
-{
- char *dirpath;
- int dirfd;
- char *status;
- Error *local_err = NULL;
-
- if (!sys2memblk) {
- DIR *dp;
-
- if (!result) {
- error_setg(errp, "Internal error, 'result' should not be NULL");
- return;
- }
- errno = 0;
- dp = opendir("/sys/devices/system/memory/");
- /* if there is no 'memory' directory in sysfs,
- * we think this VM does not support online/offline memory block,
- * any other solution?
- */
- if (!dp) {
- if (errno == ENOENT) {
- result->response =
- GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED;
- }
- goto out1;
- }
- closedir(dp);
- }
-
- dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/",
- mem_blk->phys_index);
- dirfd = open(dirpath, O_RDONLY | O_DIRECTORY);
- if (dirfd == -1) {
- if (sys2memblk) {
- error_setg_errno(errp, errno, "open(\"%s\")", dirpath);
- } else {
- if (errno == ENOENT) {
- result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND;
- } else {
- result->response =
- GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED;
- }
- }
- g_free(dirpath);
- goto out1;
- }
- g_free(dirpath);
-
- status = g_malloc0(10);
- ga_read_sysfs_file(dirfd, "state", status, 10, &local_err);
- if (local_err) {
- /* treat with sysfs file that not exist in old kernel */
- if (errno == ENOENT) {
- error_free(local_err);
- if (sys2memblk) {
- mem_blk->online = true;
- mem_blk->can_offline = false;
- } else if (!mem_blk->online) {
- result->response =
- GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED;
- }
- } else {
- if (sys2memblk) {
- error_propagate(errp, local_err);
- } else {
- error_free(local_err);
- result->response =
- GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED;
- }
- }
- goto out2;
- }
-
- if (sys2memblk) {
- char removable = '0';
-
- mem_blk->online = (strncmp(status, "online", 6) == 0);
-
- ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err);
- if (local_err) {
- /* if no 'removable' file, it doesn't support offline mem blk */
- if (errno == ENOENT) {
- error_free(local_err);
- mem_blk->can_offline = false;
- } else {
- error_propagate(errp, local_err);
- }
- } else {
- mem_blk->can_offline = (removable != '0');
- }
- } else {
- if (mem_blk->online != (strncmp(status, "online", 6) == 0)) {
- const char *new_state = mem_blk->online ? "online" : "offline";
-
- ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state),
- &local_err);
- if (local_err) {
- error_free(local_err);
- result->response =
- GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED;
- goto out2;
- }
-
- result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS;
- result->has_error_code = false;
- } /* otherwise pretend successful re-(on|off)-lining */
- }
- g_free(status);
- close(dirfd);
- return;
-
-out2:
- g_free(status);
- close(dirfd);
-out1:
- if (!sys2memblk) {
- result->has_error_code = true;
- result->error_code = errno;
- }
-}
-
-GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
-{
- GuestMemoryBlockList *head, **tail;
- Error *local_err = NULL;
- struct dirent *de;
- DIR *dp;
-
- head = NULL;
- tail = &head;
-
- dp = opendir("/sys/devices/system/memory/");
- if (!dp) {
- /* it's ok if this happens to be a system that doesn't expose
- * memory blocks via sysfs, but otherwise we should report
- * an error
- */
- if (errno != ENOENT) {
- error_setg_errno(errp, errno, "Can't open directory"
- "\"/sys/devices/system/memory/\"");
- }
- return NULL;
- }
-
- /* Note: the phys_index of memory block may be discontinuous,
- * this is because a memblk is the unit of the Sparse Memory design, which
- * allows discontinuous memory ranges (ex. NUMA), so here we should
- * traverse the memory block directory.
- */
- while ((de = readdir(dp)) != NULL) {
- GuestMemoryBlock *mem_blk;
-
- if ((strncmp(de->d_name, "memory", 6) != 0) ||
- !(de->d_type & DT_DIR)) {
- continue;
- }
-
- mem_blk = g_malloc0(sizeof *mem_blk);
- /* The d_name is "memoryXXX", phys_index is block id, same as XXX */
- mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10);
- mem_blk->has_can_offline = true; /* lolspeak ftw */
- transfer_memory_block(mem_blk, true, NULL, &local_err);
- if (local_err) {
- break;
- }
-
- QAPI_LIST_APPEND(tail, mem_blk);
- }
-
- closedir(dp);
- if (local_err == NULL) {
- /* there's no guest with zero memory blocks */
- if (head == NULL) {
- error_setg(errp, "guest reported zero memory blocks!");
- }
- return head;
- }
-
- qapi_free_GuestMemoryBlockList(head);
- error_propagate(errp, local_err);
- return NULL;
-}
-
-GuestMemoryBlockResponseList *
-qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
-{
- GuestMemoryBlockResponseList *head, **tail;
- Error *local_err = NULL;
-
- head = NULL;
- tail = &head;
-
- while (mem_blks != NULL) {
- GuestMemoryBlockResponse *result;
- GuestMemoryBlock *current_mem_blk = mem_blks->value;
-
- result = g_malloc0(sizeof(*result));
- result->phys_index = current_mem_blk->phys_index;
- transfer_memory_block(current_mem_blk, false, result, &local_err);
- if (local_err) { /* should never happen */
- goto err;
- }
-
- QAPI_LIST_APPEND(tail, result);
- mem_blks = mem_blks->next;
- }
-
- return head;
-err:
- qapi_free_GuestMemoryBlockResponseList(head);
- error_propagate(errp, local_err);
- return NULL;
-}
-
-GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
-{
- Error *local_err = NULL;
- char *dirpath;
- int dirfd;
- char *buf;
- GuestMemoryBlockInfo *info;
-
- dirpath = g_strdup_printf("/sys/devices/system/memory/");
- dirfd = open(dirpath, O_RDONLY | O_DIRECTORY);
- if (dirfd == -1) {
- error_setg_errno(errp, errno, "open(\"%s\")", dirpath);
- g_free(dirpath);
- return NULL;
- }
- g_free(dirpath);
-
- buf = g_malloc0(20);
- ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err);
- close(dirfd);
- if (local_err) {
- g_free(buf);
- error_propagate(errp, local_err);
- return NULL;
- }
-
- info = g_new0(GuestMemoryBlockInfo, 1);
- info->size = strtol(buf, NULL, 16); /* the unit is bytes */
-
- g_free(buf);
-
- return info;
-}
-
-#define MAX_NAME_LEN 128
-static GuestDiskStatsInfoList *guest_get_diskstats(Error **errp)
-{
-#ifdef CONFIG_LINUX
- GuestDiskStatsInfoList *head = NULL, **tail = &head;
- const char *diskstats = "/proc/diskstats";
- FILE *fp;
- size_t n;
- char *line = NULL;
-
- fp = fopen(diskstats, "r");
- if (fp == NULL) {
- error_setg_errno(errp, errno, "open(\"%s\")", diskstats);
- return NULL;
- }
-
- while (getline(&line, &n, fp) != -1) {
- g_autofree GuestDiskStatsInfo *diskstatinfo = NULL;
- g_autofree GuestDiskStats *diskstat = NULL;
- char dev_name[MAX_NAME_LEN];
- unsigned int ios_pgr, tot_ticks, rq_ticks, wr_ticks, dc_ticks, fl_ticks;
- unsigned long rd_ios, rd_merges_or_rd_sec, rd_ticks_or_wr_sec, wr_ios;
- unsigned long wr_merges, rd_sec_or_wr_ios, wr_sec;
- unsigned long dc_ios, dc_merges, dc_sec, fl_ios;
- unsigned int major, minor;
- int i;
-
- i = sscanf(line, "%u %u %s %lu %lu %lu"
- "%lu %lu %lu %lu %u %u %u %u"
- "%lu %lu %lu %u %lu %u",
- &major, &minor, dev_name,
- &rd_ios, &rd_merges_or_rd_sec, &rd_sec_or_wr_ios,
- &rd_ticks_or_wr_sec, &wr_ios, &wr_merges, &wr_sec,
- &wr_ticks, &ios_pgr, &tot_ticks, &rq_ticks,
- &dc_ios, &dc_merges, &dc_sec, &dc_ticks,
- &fl_ios, &fl_ticks);
-
- if (i < 7) {
- continue;
- }
-
- diskstatinfo = g_new0(GuestDiskStatsInfo, 1);
- diskstatinfo->name = g_strdup(dev_name);
- diskstatinfo->major = major;
- diskstatinfo->minor = minor;
-
- diskstat = g_new0(GuestDiskStats, 1);
- if (i == 7) {
- diskstat->has_read_ios = true;
- diskstat->read_ios = rd_ios;
- diskstat->has_read_sectors = true;
- diskstat->read_sectors = rd_merges_or_rd_sec;
- diskstat->has_write_ios = true;
- diskstat->write_ios = rd_sec_or_wr_ios;
- diskstat->has_write_sectors = true;
- diskstat->write_sectors = rd_ticks_or_wr_sec;
- }
- if (i >= 14) {
- diskstat->has_read_ios = true;
- diskstat->read_ios = rd_ios;
- diskstat->has_read_sectors = true;
- diskstat->read_sectors = rd_sec_or_wr_ios;
- diskstat->has_read_merges = true;
- diskstat->read_merges = rd_merges_or_rd_sec;
- diskstat->has_read_ticks = true;
- diskstat->read_ticks = rd_ticks_or_wr_sec;
- diskstat->has_write_ios = true;
- diskstat->write_ios = wr_ios;
- diskstat->has_write_sectors = true;
- diskstat->write_sectors = wr_sec;
- diskstat->has_write_merges = true;
- diskstat->write_merges = wr_merges;
- diskstat->has_write_ticks = true;
- diskstat->write_ticks = wr_ticks;
- diskstat->has_ios_pgr = true;
- diskstat->ios_pgr = ios_pgr;
- diskstat->has_total_ticks = true;
- diskstat->total_ticks = tot_ticks;
- diskstat->has_weight_ticks = true;
- diskstat->weight_ticks = rq_ticks;
- }
- if (i >= 18) {
- diskstat->has_discard_ios = true;
- diskstat->discard_ios = dc_ios;
- diskstat->has_discard_merges = true;
- diskstat->discard_merges = dc_merges;
- diskstat->has_discard_sectors = true;
- diskstat->discard_sectors = dc_sec;
- diskstat->has_discard_ticks = true;
- diskstat->discard_ticks = dc_ticks;
- }
- if (i >= 20) {
- diskstat->has_flush_ios = true;
- diskstat->flush_ios = fl_ios;
- diskstat->has_flush_ticks = true;
- diskstat->flush_ticks = fl_ticks;
- }
-
- diskstatinfo->stats = g_steal_pointer(&diskstat);
- QAPI_LIST_APPEND(tail, diskstatinfo);
- diskstatinfo = NULL;
- }
- free(line);
- fclose(fp);
- return head;
-#else
- g_debug("disk stats reporting available only for Linux");
- return NULL;
-#endif
-}
-
-GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp)
-{
- return guest_get_diskstats(errp);
-}
-
-GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp)
-{
- GuestCpuStatsList *head = NULL, **tail = &head;
- const char *cpustats = "/proc/stat";
- int clk_tck = sysconf(_SC_CLK_TCK);
- FILE *fp;
- size_t n;
- char *line = NULL;
-
- fp = fopen(cpustats, "r");
- if (fp == NULL) {
- error_setg_errno(errp, errno, "open(\"%s\")", cpustats);
- return NULL;
- }
-
- while (getline(&line, &n, fp) != -1) {
- GuestCpuStats *cpustat = NULL;
- GuestLinuxCpuStats *linuxcpustat;
- int i;
- unsigned long user, system, idle, iowait, irq, softirq, steal, guest;
- unsigned long nice, guest_nice;
- char name[64];
-
- i = sscanf(line, "%s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu",
- name, &user, &nice, &system, &idle, &iowait, &irq, &softirq,
- &steal, &guest, &guest_nice);
-
- /* drop "cpu 1 2 3 ...", get "cpuX 1 2 3 ..." only */
- if ((i == EOF) || strncmp(name, "cpu", 3) || (name[3] == '\0')) {
- continue;
- }
-
- if (i < 5) {
- slog("Parsing cpu stat from %s failed, see \"man proc\"", cpustats);
- break;
- }
-
- cpustat = g_new0(GuestCpuStats, 1);
- cpustat->type = GUEST_CPU_STATS_TYPE_LINUX;
-
- linuxcpustat = &cpustat->u.q_linux;
- linuxcpustat->cpu = atoi(&name[3]);
- linuxcpustat->user = user * 1000 / clk_tck;
- linuxcpustat->nice = nice * 1000 / clk_tck;
- linuxcpustat->system = system * 1000 / clk_tck;
- linuxcpustat->idle = idle * 1000 / clk_tck;
-
- if (i > 5) {
- linuxcpustat->has_iowait = true;
- linuxcpustat->iowait = iowait * 1000 / clk_tck;
- }
-
- if (i > 6) {
- linuxcpustat->has_irq = true;
- linuxcpustat->irq = irq * 1000 / clk_tck;
- linuxcpustat->has_softirq = true;
- linuxcpustat->softirq = softirq * 1000 / clk_tck;
- }
-
- if (i > 8) {
- linuxcpustat->has_steal = true;
- linuxcpustat->steal = steal * 1000 / clk_tck;
- }
-
- if (i > 9) {
- linuxcpustat->has_guest = true;
- linuxcpustat->guest = guest * 1000 / clk_tck;
- }
-
- if (i > 10) {
- linuxcpustat->has_guest = true;
- linuxcpustat->guest = guest * 1000 / clk_tck;
- linuxcpustat->has_guestnice = true;
- linuxcpustat->guestnice = guest_nice * 1000 / clk_tck;
- }
-
- QAPI_LIST_APPEND(tail, cpustat);
- }
-
- free(line);
- fclose(fp);
- return head;
-}
-
-#else /* defined(__linux__) */
-
-void qmp_guest_suspend_disk(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-}
-
-void qmp_guest_suspend_ram(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-}
-
-void qmp_guest_suspend_hybrid(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-}
-
-GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return -1;
-}
-
-GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-GuestMemoryBlockResponseList *
-qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-#endif
-
#ifdef HAVE_GETIFADDRS
static GuestNetworkInterface *
guest_find_interface(GuestNetworkInterfaceList *head,
@@ -3013,131 +1135,8 @@ error:
return NULL;
}
-#else
-
-GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
#endif /* HAVE_GETIFADDRS */
-#if !defined(CONFIG_FSFREEZE)
-
-GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-
- return 0;
-}
-
-int64_t qmp_guest_fsfreeze_freeze(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-
- return 0;
-}
-
-int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
- strList *mountpoints,
- Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-
- return 0;
-}
-
-int64_t qmp_guest_fsfreeze_thaw(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-
- return 0;
-}
-
-GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-#endif /* CONFIG_FSFREEZE */
-
-#if !defined(CONFIG_FSTRIM)
-GuestFilesystemTrimResponse *
-qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-#endif
-
-/* add unsupported commands to the list of blocked RPCs */
-GList *ga_command_init_blockedrpcs(GList *blockedrpcs)
-{
-#if !defined(__linux__)
- {
- const char *list[] = {
- "guest-suspend-disk", "guest-suspend-ram",
- "guest-suspend-hybrid", "guest-get-vcpus", "guest-set-vcpus",
- "guest-get-memory-blocks", "guest-set-memory-blocks",
- "guest-get-memory-block-size", "guest-get-memory-block-info",
- NULL};
- char **p = (char **)list;
-
- while (*p) {
- blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++));
- }
- }
-#endif
-
-#if !defined(HAVE_GETIFADDRS)
- blockedrpcs = g_list_append(blockedrpcs,
- g_strdup("guest-network-get-interfaces"));
-#endif
-
-#if !defined(CONFIG_FSFREEZE)
- {
- const char *list[] = {
- "guest-get-fsinfo", "guest-fsfreeze-status",
- "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list",
- "guest-fsfreeze-thaw", "guest-get-fsinfo",
- "guest-get-disks", NULL};
- char **p = (char **)list;
-
- while (*p) {
- blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++));
- }
- }
-#endif
-
-#if !defined(CONFIG_FSTRIM)
- blockedrpcs = g_list_append(blockedrpcs, g_strdup("guest-fstrim"));
-#endif
-
- blockedrpcs = g_list_append(blockedrpcs, g_strdup("guest-get-devices"));
-
- return blockedrpcs;
-}
-
/* register init/cleanup routines for stateful command groups */
void ga_command_state_init(GAState *s, GACommandState *cs)
{
@@ -3200,15 +1199,7 @@ GuestUserList *qmp_guest_get_users(Error **errp)
return head;
}
-#else
-
-GuestUserList *qmp_guest_get_users(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
- return NULL;
-}
-
-#endif
+#endif /* HAVE_UTMPX */
/* Replace escaped special characters with their real values. The replacement
* is done in place -- returned value is in the original string.
@@ -3345,13 +1336,6 @@ GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
return info;
}
-GuestDeviceInfoList *qmp_guest_get_devices(Error **errp)
-{
- error_setg(errp, QERR_UNSUPPORTED);
-
- return NULL;
-}
-
#ifndef HOST_NAME_MAX
# ifdef _POSIX_HOST_NAME_MAX
# define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
@@ -3386,3 +1370,23 @@ char *qga_get_host_name(Error **errp)
return g_steal_pointer(&hostname);
}
+
+#ifdef CONFIG_GETLOADAVG
+GuestLoadAverage *qmp_guest_get_load(Error **errp)
+{
+ double loadavg[3];
+ GuestLoadAverage *ret = NULL;
+
+ if (getloadavg(loadavg, G_N_ELEMENTS(loadavg)) < 0) {
+ error_setg_errno(errp, errno,
+ "cannot query load average");
+ return NULL;
+ }
+
+ ret = g_new0(GuestLoadAverage, 1);
+ ret->load1m = loadavg[0];
+ ret->load5m = loadavg[1];
+ ret->load15m = loadavg[2];
+ return ret;
+}
+#endif
generated by cgit v1.1 at 2025-07-02 02:16:09 +0000