static int _error_device(const char *name, size_t size) { struct dm_task *dmt; int r = 0; if (!(dmt = dm_task_create(DM_DEVICE_RELOAD))) return 0; if (!dm_task_set_name(dmt, name)) goto error; if (!dm_task_add_target(dmt, UINT64_C(0), size, "error", "")) goto error; if (!dm_task_set_ro(dmt)) goto error; if (!dm_task_no_open_count(dmt)) goto error; if (!dm_task_run(dmt)) goto error; if (!_dm_simple(DM_DEVICE_RESUME, name, 1)) { _dm_simple(DM_DEVICE_CLEAR, name, 0); goto error; } r = 1; error: dm_task_destroy(dmt); return r; }
int dm_addmap(int task, const char *name, const char *target, const char *params, uint64_t size, int ro, const char *uuid, int part, mode_t mode, uid_t uid, gid_t gid) { int r = 0; struct dm_task *dmt; char *prefixed_uuid = NULL; #ifdef LIBDM_API_COOKIE uint32_t cookie = 0; uint16_t udev_flags = 0; #endif if (!(dmt = dm_task_create (task))) return 0; if (!dm_task_set_name (dmt, name)) goto addout; if (!dm_task_add_target (dmt, 0, size, target, params)) goto addout; if (ro && !dm_task_set_ro (dmt)) goto addout; if (task == DM_DEVICE_CREATE && uuid) { prefixed_uuid = make_prefixed_uuid(part, uuid); if (prefixed_uuid == NULL) goto addout; if (!dm_task_set_uuid(dmt, prefixed_uuid)) goto addout; } if (!dm_task_set_mode(dmt, mode)) goto addout; if (!dm_task_set_uid(dmt, uid)) goto addout; if (!dm_task_set_gid(dmt, gid)) goto addout; dm_task_no_open_count(dmt); #ifdef LIBDM_API_COOKIE if (!udev_sync) udev_flags = DM_UDEV_DISABLE_LIBRARY_FALLBACK; if (task == DM_DEVICE_CREATE && !dm_task_set_cookie(dmt, &cookie, udev_flags)) goto addout; #endif r = dm_task_run (dmt); #ifdef LIBDM_API_COOKIE if (task == DM_DEVICE_CREATE) dm_udev_wait(cookie); #endif addout: dm_task_destroy (dmt); free(prefixed_uuid); return r; }
static int dm_addmap (int task, const char *target, struct multipath *mpp, char * params, int ro) { int r = 0; struct dm_task *dmt; char *prefixed_uuid = NULL; uint32_t cookie = 0; if (!(dmt = dm_task_create (task))) return 0; if (!dm_task_set_name (dmt, mpp->alias)) goto addout; if (!dm_task_add_target (dmt, 0, mpp->size, target, params)) goto addout; if (ro) dm_task_set_ro(dmt); if (task == DM_DEVICE_CREATE) { if (strlen(mpp->wwid) > 0) { prefixed_uuid = MALLOC(UUID_PREFIX_LEN + strlen(mpp->wwid) + 1); if (!prefixed_uuid) { condlog(0, "cannot create prefixed uuid : %s", strerror(errno)); goto addout; } sprintf(prefixed_uuid, UUID_PREFIX "%s", mpp->wwid); if (!dm_task_set_uuid(dmt, prefixed_uuid)) goto freeout; } dm_task_skip_lockfs(dmt); #ifdef LIBDM_API_FLUSH dm_task_no_flush(dmt); #endif } if (mpp->attribute_flags & (1 << ATTR_MODE) && !dm_task_set_mode(dmt, mpp->mode)) goto freeout; if (mpp->attribute_flags & (1 << ATTR_UID) && !dm_task_set_uid(dmt, mpp->uid)) goto freeout; if (mpp->attribute_flags & (1 << ATTR_GID) && !dm_task_set_gid(dmt, mpp->gid)) goto freeout; condlog(4, "%s: %s [0 %llu %s %s]", mpp->alias, task == DM_DEVICE_RELOAD ? "reload" : "addmap", mpp->size, target, params); dm_task_no_open_count(dmt); if (task == DM_DEVICE_CREATE && !dm_task_set_cookie(dmt, &cookie, DM_UDEV_DISABLE_LIBRARY_FALLBACK)) goto freeout; r = dm_task_run (dmt); if (task == DM_DEVICE_CREATE) dm_udev_wait(cookie); freeout: if (prefixed_uuid) FREE(prefixed_uuid); addout: dm_task_destroy (dmt); return r; }
int dm_create_device(const char *name, const char *device, const char *cipher, const char *type, const char *uuid, uint64_t size, uint64_t skip, uint64_t offset, size_t key_size, const char *key, int read_only, int reload) { struct dm_task *dmt = NULL; struct dm_info dmi; char *params = NULL; char *error = NULL; char dev_uuid[DM_UUID_LEN] = {0}; int r = -EINVAL; uint32_t read_ahead = 0; uint32_t cookie = 0; uint16_t udev_flags = 0; params = get_params(device, skip, offset, cipher, key_size, key); if (!params) goto out_no_removal; if (type && !strncmp(type, "TEMP", 4)) udev_flags = CRYPT_TEMP_UDEV_FLAGS; /* All devices must have DM_UUID, only resize on old device is exception */ if (reload) { if (!(dmt = dm_task_create(DM_DEVICE_RELOAD))) goto out_no_removal; if (!dm_task_set_name(dmt, name)) goto out_no_removal; } else { dm_prepare_uuid(name, type, uuid, dev_uuid, sizeof(dev_uuid)); if (!(dmt = dm_task_create(DM_DEVICE_CREATE))) goto out_no_removal; if (!dm_task_set_name(dmt, name)) goto out_no_removal; if (!dm_task_set_uuid(dmt, dev_uuid)) goto out_no_removal; if (_dm_use_udev() && !dm_task_set_cookie(dmt, &cookie, udev_flags)) goto out_no_removal; } if (read_only && !dm_task_set_ro(dmt)) goto out_no_removal; if (!dm_task_add_target(dmt, 0, size, DM_CRYPT_TARGET, params)) goto out_no_removal; #ifdef DM_READ_AHEAD_MINIMUM_FLAG if (_dev_read_ahead(device, &read_ahead) && !dm_task_set_read_ahead(dmt, read_ahead, DM_READ_AHEAD_MINIMUM_FLAG)) goto out_no_removal; #endif if (!dm_task_run(dmt)) goto out_no_removal; if (reload) { dm_task_destroy(dmt); if (!(dmt = dm_task_create(DM_DEVICE_RESUME))) goto out; if (!dm_task_set_name(dmt, name)) goto out; if (uuid && !dm_task_set_uuid(dmt, dev_uuid)) goto out; if (_dm_use_udev() && !dm_task_set_cookie(dmt, &cookie, udev_flags)) goto out; if (!dm_task_run(dmt)) goto out; } if (!dm_task_get_info(dmt, &dmi)) goto out; r = 0; out: if (_dm_use_udev()) { (void)dm_udev_wait(cookie); cookie = 0; } if (r < 0 && !reload) { if (get_error()) error = strdup(get_error()); dm_remove_device(name, 0, 0); if (error) { set_error(error); free(error); } } out_no_removal: if (cookie && _dm_use_udev()) (void)dm_udev_wait(cookie); if (params) safe_free(params); if (dmt) dm_task_destroy(dmt); dm_task_update_nodes(); return r; }