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125 lines
4.7 KiB
C
125 lines
4.7 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _SEGTYPES_H
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#define _SEGTYPES_H
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#include "metadata-exported.h"
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struct segtype_handler;
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struct cmd_context;
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struct config_tree;
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struct lv_segment;
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struct formatter;
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struct config_node;
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struct dev_manager;
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/* Feature flags */
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#define SEG_CAN_SPLIT 0x00000001U
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#define SEG_AREAS_STRIPED 0x00000002U
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#define SEG_AREAS_MIRRORED 0x00000004U
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#define SEG_SNAPSHOT 0x00000008U
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#define SEG_FORMAT1_SUPPORT 0x00000010U
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#define SEG_VIRTUAL 0x00000020U
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#define SEG_CANNOT_BE_ZEROED 0x00000040U
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#define SEG_MONITORED 0x00000080U
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#define SEG_UNKNOWN 0x80000000U
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#define seg_is_mirrored(seg) ((seg)->segtype->flags & SEG_AREAS_MIRRORED ? 1 : 0)
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#define seg_is_striped(seg) ((seg)->segtype->flags & SEG_AREAS_STRIPED ? 1 : 0)
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#define seg_is_snapshot(seg) ((seg)->segtype->flags & SEG_SNAPSHOT ? 1 : 0)
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#define seg_is_virtual(seg) ((seg)->segtype->flags & SEG_VIRTUAL ? 1 : 0)
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#define seg_can_split(seg) ((seg)->segtype->flags & SEG_CAN_SPLIT ? 1 : 0)
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#define seg_cannot_be_zeroed(seg) ((seg)->segtype->flags & SEG_CANNOT_BE_ZEROED ? 1 : 0)
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#define seg_monitored(seg) ((seg)->segtype->flags & SEG_MONITORED ? 1 : 0)
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#define seg_unknown(seg) ((seg)->segtype->flags & SEG_UNKNOWN ? 1 : 0)
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#define segtype_is_striped(segtype) ((segtype)->flags & SEG_AREAS_STRIPED ? 1 : 0)
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#define segtype_is_mirrored(segtype) ((segtype)->flags & SEG_AREAS_MIRRORED ? 1 : 0)
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#define segtype_is_virtual(segtype) ((segtype)->flags & SEG_VIRTUAL ? 1 : 0)
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struct segment_type {
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struct dm_list list; /* Internal */
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struct cmd_context *cmd; /* lvm_register_segtype() sets this. */
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uint32_t flags;
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struct segtype_handler *ops;
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const char *name;
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void *library; /* lvm_register_segtype() sets this. */
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void *private; /* For the segtype handler to use. */
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};
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struct segtype_handler {
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const char *(*name) (const struct lv_segment * seg);
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void (*display) (const struct lv_segment * seg);
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int (*text_export) (const struct lv_segment * seg,
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struct formatter * f);
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int (*text_import_area_count) (struct config_node * sn,
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uint32_t *area_count);
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int (*text_import) (struct lv_segment * seg,
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const struct config_node * sn,
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struct dm_hash_table * pv_hash);
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int (*merge_segments) (struct lv_segment * seg1,
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struct lv_segment * seg2);
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int (*add_target_line) (struct dev_manager *dm, struct dm_pool *mem,
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struct cmd_context *cmd, void **target_state,
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struct lv_segment *seg,
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struct dm_tree_node *node, uint64_t len,
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uint32_t *pvmove_mirror_count);
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int (*target_percent) (void **target_state,
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percent_range_t *percent_range,
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struct dm_pool * mem,
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struct cmd_context *cmd,
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struct lv_segment *seg, char *params,
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uint64_t *total_numerator,
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uint64_t *total_denominator);
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int (*target_present) (struct cmd_context *cmd,
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const struct lv_segment *seg,
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unsigned *attributes);
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int (*modules_needed) (struct dm_pool *mem,
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const struct lv_segment *seg,
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struct dm_list *modules);
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void (*destroy) (const struct segment_type * segtype);
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int (*target_monitored) (struct lv_segment *seg, int *pending);
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int (*target_monitor_events) (struct lv_segment *seg, int events);
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int (*target_unmonitor_events) (struct lv_segment *seg, int events);
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};
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struct segment_type *get_segtype_from_string(struct cmd_context *cmd,
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const char *str);
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struct segtype_library;
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int lvm_register_segtype(struct segtype_library *seglib,
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struct segment_type *segtype);
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struct segment_type *init_striped_segtype(struct cmd_context *cmd);
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struct segment_type *init_zero_segtype(struct cmd_context *cmd);
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struct segment_type *init_error_segtype(struct cmd_context *cmd);
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struct segment_type *init_free_segtype(struct cmd_context *cmd);
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struct segment_type *init_unknown_segtype(struct cmd_context *cmd, const char *name);
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#ifdef SNAPSHOT_INTERNAL
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struct segment_type *init_snapshot_segtype(struct cmd_context *cmd);
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#endif
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#ifdef MIRRORED_INTERNAL
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struct segment_type *init_mirrored_segtype(struct cmd_context *cmd);
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#endif
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#ifdef CRYPT_INTERNAL
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struct segment_type *init_crypt_segtype(struct cmd_context *cmd);
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#endif
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#endif
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