diff options
author | Daniel P. Berrangé <berrange@redhat.com> | 2024-07-12 14:24:41 +0100 |
---|---|---|
committer | Konstantin Kostiuk <kkostiuk@redhat.com> | 2024-07-19 11:50:35 +0300 |
commit | 329cefe405e0b4e1e7a97ef84734dac82668a2d0 (patch) | |
tree | e755f1918523cf230388f1c91f2fa35869cabc66 /qga/commands-posix.c | |
parent | 0c6f8824faa70d0782ce8b6a59d500bbd95acf64 (diff) |
qga: move linux fs/disk command impls to commands-linux.c
The qmp_guest_{fstrim, get_fsinfo, get_disks} command impls in
commands-posix.c are surrounded by '#ifdef __linux__' so should
instead live in commands-linux.c
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20240712132459.3974109-5-berrange@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Diffstat (limited to 'qga/commands-posix.c')
-rw-r--r-- | qga/commands-posix.c | 909 |
1 files changed, 0 insertions, 909 deletions
diff --git a/qga/commands-posix.c b/qga/commands-posix.c index ef21da63be..98aafc45f3 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -24,23 +24,12 @@ #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> @@ -842,904 +831,6 @@ 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 */ - -#endif /* __linux__ */ - #if defined(__linux__) || defined(__FreeBSD__) void qmp_guest_set_user_password(const char *username, const char *password, |