1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _LAYOUT_SLICE_H 28 #define _LAYOUT_SLICE_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #include "libdiskmgt.h" 37 #include "volume_devconfig.h" 38 #include "volume_dlist.h" 39 40 /* 41 * struct to track which slices need to be explicitly "removed" from 42 * the system before applying any metassist updates/changes. 43 */ 44 typedef struct { 45 char *slice_name; 46 uint32_t slice_index; 47 } rmvdslice_t; 48 49 extern void release_slices_to_remove(); 50 extern dlist_t *get_slices_to_remove(); 51 extern int add_slice_to_remove(char *name, uint32_t index); 52 53 /* 54 * struct to track which slices have been explicitly modified 55 * during the layout process... 56 * 57 * src_slice_desc is the dm_descriptor_t of the slice which provided the 58 * space (this is only relevant to slices that have been created by 59 * taking space from some other "source" slice). 60 * slice_devconfig is the devconfig_t struct with the modified slice properties. 61 * times_modified is the number of times the slice has been modified 62 * (this is only relevant to slices that have been resized to 63 * provide space for new slices) 64 * volume_component is used to control when the slice_devcfg is freed. 65 * if volume_component is B_TRUE, the devconfig is returned as part 66 * of the result of layout and so cannot be freed by 67 * release_modified_slices. 68 */ 69 typedef struct { 70 dm_descriptor_t src_slice_desc; 71 devconfig_t *slice_devcfg; 72 int times_modified; 73 boolean_t volume_component; 74 } modslice_t; 75 76 extern dlist_t *get_modified_slices(); 77 extern int release_modified_slices(); 78 79 extern int make_slicename_for_diskname_and_index( 80 char *diskname, 81 uint16_t index, 82 char **slicename); 83 84 extern int assemble_modified_slice( 85 dm_descriptor_t src_slice_desc, 86 char *mod_name, 87 uint32_t mod_index, 88 uint64_t mod_stblk, 89 uint64_t mod_nblks, 90 uint64_t mod_size, 91 devconfig_t **mod_slice); 92 93 extern int choose_slice( 94 uint64_t nbytes, 95 uint16_t npaths, 96 dlist_t *slices, 97 dlist_t *used, 98 dlist_t *used_hbas, 99 dlist_t *used_disks, 100 boolean_t unused_disk, 101 boolean_t nbytes_is_min, 102 boolean_t add_extra_cyl, 103 devconfig_t **chosen); 104 105 extern int create_devconfig_for_slice( 106 dm_descriptor_t slice, 107 devconfig_t **newslice); 108 109 extern int destroy_new_slice( 110 devconfig_t *vol); 111 112 /* 113 * accessors for the list of used slice names for named diskset. 114 */ 115 extern int is_used_slice(dm_descriptor_t slice, boolean_t *is_used); 116 extern int add_used_slice_by_name(char *slicename); 117 extern int remove_used_slice_by_name(char *slicename); 118 extern int add_used_slice(dm_descriptor_t slice); 119 extern void release_used_slices(); 120 extern int disk_has_used_slice(dm_descriptor_t disk, boolean_t *inuse); 121 122 /* 123 * accessors to track slices reserved for use in explicit 124 * volume requests 125 */ 126 extern int add_reserved_slice(dm_descriptor_t slice); 127 extern int is_reserved_slice(dm_descriptor_t slice, boolean_t *is_rsvd); 128 extern int get_reserved_slices(dlist_t **list); 129 extern void release_reserved_slices(); 130 131 #ifdef __cplusplus 132 } 133 #endif 134 135 #endif /* _LAYOUT_SLICE_H */ 136