1 files changed, 61 insertions, 0 deletions
diff --git a/src/shared/blockdev-util.h b/src/shared/blockdev-util.h
new file mode 100644
index 0000000..954a23d
--- /dev/null
+++ b/src/shared/blockdev-util.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <sys/types.h>
+
+#include "sd-device.h"
+
+#include "macro.h"
+#include "stdio-util.h"
+#include "string-util.h"
+
+#define SYS_BLOCK_PATH_MAX(suffix)                                      \
+        (STRLEN("/sys/dev/block/") + DECIMAL_STR_MAX(dev_t) + 1 + DECIMAL_STR_MAX(dev_t) + strlen_ptr(suffix))
+#define xsprintf_sys_block_path(buf, suffix, devno)                     \
+        xsprintf(buf, "/sys/dev/block/%u:%u%s", major(devno), minor(devno), strempty(suffix))
+
+typedef enum BlockDeviceLookupFlag {
+        BLOCK_DEVICE_LOOKUP_WHOLE_DISK  = 1 << 0, /* whole block device, e.g. sda, nvme0n1, or loop0. */
+        BLOCK_DEVICE_LOOKUP_BACKING     = 1 << 1, /* fd may be regular file or directory on file system, in
+                                                   * which case backing block device is determined. */
+        BLOCK_DEVICE_LOOKUP_ORIGINATING = 1 << 2, /* Try to find the underlying layer device for stacked
+                                                   * block device, e.g. LUKS-style DM. */
+} BlockDeviceLookupFlag;
+
+int block_device_new_from_fd(int fd, BlockDeviceLookupFlag flag, sd_device **ret);
+int block_device_new_from_path(const char *path, BlockDeviceLookupFlag flag, sd_device **ret);
+
+int block_device_is_whole_disk(sd_device *dev);
+int block_device_get_whole_disk(sd_device *dev, sd_device **ret);
+int block_device_get_originating(sd_device *dev, sd_device **ret);
+
+int block_get_whole_disk(dev_t d, dev_t *ret);
+int block_get_originating(dev_t d, dev_t *ret);
+
+int get_block_device_fd(int fd, dev_t *ret);
+int get_block_device(const char *path, dev_t *dev);
+
+int get_block_device_harder_fd(int fd, dev_t *dev);
+int get_block_device_harder(const char *path, dev_t *dev);
+
+int lock_whole_block_device(dev_t devt, int operation);
+
+int blockdev_partscan_enabled(int fd);
+
+int fd_is_encrypted(int fd);
+int path_is_encrypted(const char *path);
+
+int fd_get_whole_disk(int fd, bool backing, dev_t *ret);
+int path_get_whole_disk(const char *path, bool backing, dev_t *ret);
+
+int block_device_add_partition(int fd, const char *name, int nr, uint64_t start, uint64_t size);
+int block_device_remove_partition(int fd, const char *name, int nr);
+int block_device_resize_partition(int fd, int nr, uint64_t start, uint64_t size);
+int partition_enumerator_new(sd_device *dev, sd_device_enumerator **ret);
+int block_device_remove_all_partitions(sd_device *dev, int fd);
+int block_device_has_partitions(sd_device *dev);
+int blockdev_reread_partition_table(sd_device *dev);
+
+int blockdev_get_sector_size(int fd, uint32_t *ret);
+
+int blockdev_get_root(int level, dev_t *ret);