| /* |
| * Copyright (C) 2013 Red Hat, Inc. All rights reserved. |
| * |
| * This file is part of LVM2. |
| * |
| * This copyrighted material is made available to anyone wishing to use, |
| * modify, copy, or redistribute it subject to the terms and conditions |
| * of the GNU Lesser General Public License v.2.1. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with this program; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef _LVM_DEV_TYPE_H |
| #define _LVM_DEV_TYPE_H |
| |
| #include "device.h" |
| #include "display.h" |
| |
| #define NUMBER_OF_MAJORS 4096 |
| |
| #ifdef __linux__ |
| # include "kdev_t.h" |
| #else |
| # define MAJOR(x) major((x)) |
| # define MINOR(x) minor((x)) |
| # define MKDEV(x,y) makedev((x),(y)) |
| #endif |
| |
| #define PARTITION_SCSI_DEVICE (1 << 0) |
| |
| struct dev_type_def { |
| int max_partitions; /* 0 means LVM won't use this major number. */ |
| int flags; |
| }; |
| |
| struct dev_types { |
| int md_major; |
| int blkext_major; |
| int drbd_major; |
| int device_mapper_major; |
| int emcpower_major; |
| int power2_major; |
| int dasd_major; |
| int loop_major; |
| struct dev_type_def dev_type_array[NUMBER_OF_MAJORS]; |
| }; |
| |
| struct dev_types *create_dev_types(const char *proc_dir, const struct dm_config_node *cn); |
| |
| /* Subsystems */ |
| int dev_subsystem_part_major(struct dev_types *dt, struct device *dev); |
| const char *dev_subsystem_name(struct dev_types *dt, struct device *dev); |
| int major_is_scsi_device(struct dev_types *dt, int major); |
| |
| /* Signature/superblock recognition with position returned where found. */ |
| int dev_is_md(struct device *dev, uint64_t *sb); |
| int dev_is_swap(struct device *dev, uint64_t *signature); |
| int dev_is_luks(struct device *dev, uint64_t *signature); |
| int dasd_is_cdl_formatted(struct device *dev); |
| |
| /* Signature wiping. */ |
| #define TYPE_LVM1_MEMBER 0x001 |
| #define TYPE_LVM2_MEMBER 0x002 |
| #define TYPE_DM_SNAPSHOT_COW 0x004 |
| int wipe_known_signatures(struct cmd_context *cmd, struct device *dev, const char *name, |
| uint32_t types_to_exclude, uint32_t types_no_prompt, |
| int yes, force_t force, int *wiped); |
| |
| /* Type-specific device properties */ |
| unsigned long dev_md_stripe_width(struct dev_types *dt, struct device *dev); |
| |
| /* Partitioning */ |
| int major_max_partitions(struct dev_types *dt, int major); |
| int dev_is_partitioned(struct dev_types *dt, struct device *dev); |
| int dev_get_primary_dev(struct dev_types *dt, struct device *dev, dev_t *result); |
| |
| /* Various device properties */ |
| unsigned long dev_alignment_offset(struct dev_types *dt, struct device *dev); |
| unsigned long dev_minimum_io_size(struct dev_types *dt, struct device *dev); |
| unsigned long dev_optimal_io_size(struct dev_types *dt, struct device *dev); |
| unsigned long dev_discard_max_bytes(struct dev_types *dt, struct device *dev); |
| unsigned long dev_discard_granularity(struct dev_types *dt, struct device *dev); |
| |
| int dev_is_rotational(struct dev_types *dt, struct device *dev); |
| |
| #endif |