1*86d7f5d3SJohn Marino /* $NetBSD: config.h,v 1.1.1.2 2009/12/02 00:26:28 haad Exp $ */ 2*86d7f5d3SJohn Marino 3*86d7f5d3SJohn Marino /* 4*86d7f5d3SJohn Marino * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. 5*86d7f5d3SJohn Marino * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. 6*86d7f5d3SJohn Marino * 7*86d7f5d3SJohn Marino * This file is part of LVM2. 8*86d7f5d3SJohn Marino * 9*86d7f5d3SJohn Marino * This copyrighted material is made available to anyone wishing to use, 10*86d7f5d3SJohn Marino * modify, copy, or redistribute it subject to the terms and conditions 11*86d7f5d3SJohn Marino * of the GNU Lesser General Public License v.2.1. 12*86d7f5d3SJohn Marino * 13*86d7f5d3SJohn Marino * You should have received a copy of the GNU Lesser General Public License 14*86d7f5d3SJohn Marino * along with this program; if not, write to the Free Software Foundation, 15*86d7f5d3SJohn Marino * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 16*86d7f5d3SJohn Marino */ 17*86d7f5d3SJohn Marino 18*86d7f5d3SJohn Marino #ifndef _LVM_CONFIG_H 19*86d7f5d3SJohn Marino #define _LVM_CONFIG_H 20*86d7f5d3SJohn Marino 21*86d7f5d3SJohn Marino #include "lvm-types.h" 22*86d7f5d3SJohn Marino 23*86d7f5d3SJohn Marino struct device; 24*86d7f5d3SJohn Marino struct cmd_context; 25*86d7f5d3SJohn Marino 26*86d7f5d3SJohn Marino enum { 27*86d7f5d3SJohn Marino CFG_STRING, 28*86d7f5d3SJohn Marino CFG_FLOAT, 29*86d7f5d3SJohn Marino CFG_INT, 30*86d7f5d3SJohn Marino CFG_EMPTY_ARRAY 31*86d7f5d3SJohn Marino }; 32*86d7f5d3SJohn Marino 33*86d7f5d3SJohn Marino struct config_value { 34*86d7f5d3SJohn Marino int type; 35*86d7f5d3SJohn Marino union { 36*86d7f5d3SJohn Marino int64_t i; 37*86d7f5d3SJohn Marino float r; 38*86d7f5d3SJohn Marino char *str; 39*86d7f5d3SJohn Marino } v; 40*86d7f5d3SJohn Marino struct config_value *next; /* for arrays */ 41*86d7f5d3SJohn Marino }; 42*86d7f5d3SJohn Marino 43*86d7f5d3SJohn Marino struct config_node { 44*86d7f5d3SJohn Marino char *key; 45*86d7f5d3SJohn Marino struct config_node *parent, *sib, *child; 46*86d7f5d3SJohn Marino struct config_value *v; 47*86d7f5d3SJohn Marino }; 48*86d7f5d3SJohn Marino 49*86d7f5d3SJohn Marino struct config_tree { 50*86d7f5d3SJohn Marino struct config_node *root; 51*86d7f5d3SJohn Marino }; 52*86d7f5d3SJohn Marino 53*86d7f5d3SJohn Marino struct config_tree_list { 54*86d7f5d3SJohn Marino struct dm_list list; 55*86d7f5d3SJohn Marino struct config_tree *cft; 56*86d7f5d3SJohn Marino }; 57*86d7f5d3SJohn Marino 58*86d7f5d3SJohn Marino struct config_tree *create_config_tree(const char *filename, int keep_open); 59*86d7f5d3SJohn Marino struct config_tree *create_config_tree_from_string(struct cmd_context *cmd, 60*86d7f5d3SJohn Marino const char *config_settings); 61*86d7f5d3SJohn Marino int override_config_tree_from_string(struct cmd_context *cmd, 62*86d7f5d3SJohn Marino const char *config_settings); 63*86d7f5d3SJohn Marino void destroy_config_tree(struct config_tree *cft); 64*86d7f5d3SJohn Marino 65*86d7f5d3SJohn Marino typedef uint32_t (*checksum_fn_t) (uint32_t initial, const void *buf, uint32_t size); 66*86d7f5d3SJohn Marino 67*86d7f5d3SJohn Marino int read_config_fd(struct config_tree *cft, struct device *dev, 68*86d7f5d3SJohn Marino off_t offset, size_t size, off_t offset2, size_t size2, 69*86d7f5d3SJohn Marino checksum_fn_t checksum_fn, uint32_t checksum); 70*86d7f5d3SJohn Marino 71*86d7f5d3SJohn Marino int read_config_file(struct config_tree *cft); 72*86d7f5d3SJohn Marino int write_config_file(struct config_tree *cft, const char *file, 73*86d7f5d3SJohn Marino int argc, char **argv); 74*86d7f5d3SJohn Marino 75*86d7f5d3SJohn Marino typedef int (*putline_fn)(const char *line, void *baton); 76*86d7f5d3SJohn Marino int write_config_node(const struct config_node *cn, putline_fn putline, void *baton); 77*86d7f5d3SJohn Marino 78*86d7f5d3SJohn Marino time_t config_file_timestamp(struct config_tree *cft); 79*86d7f5d3SJohn Marino int config_file_changed(struct config_tree *cft); 80*86d7f5d3SJohn Marino int merge_config_tree(struct cmd_context *cmd, struct config_tree *cft, 81*86d7f5d3SJohn Marino struct config_tree *newdata); 82*86d7f5d3SJohn Marino 83*86d7f5d3SJohn Marino struct config_node *find_config_node(const struct config_node *cn, 84*86d7f5d3SJohn Marino const char *path); 85*86d7f5d3SJohn Marino const char *find_config_str(const struct config_node *cn, const char *path, 86*86d7f5d3SJohn Marino const char *fail); 87*86d7f5d3SJohn Marino int find_config_int(const struct config_node *cn, const char *path, int fail); 88*86d7f5d3SJohn Marino float find_config_float(const struct config_node *cn, const char *path, 89*86d7f5d3SJohn Marino float fail); 90*86d7f5d3SJohn Marino 91*86d7f5d3SJohn Marino /* 92*86d7f5d3SJohn Marino * These versions check an override tree, if present, first. 93*86d7f5d3SJohn Marino */ 94*86d7f5d3SJohn Marino struct config_node *find_config_tree_node(struct cmd_context *cmd, 95*86d7f5d3SJohn Marino const char *path); 96*86d7f5d3SJohn Marino const char *find_config_tree_str(struct cmd_context *cmd, 97*86d7f5d3SJohn Marino const char *path, const char *fail); 98*86d7f5d3SJohn Marino int find_config_tree_int(struct cmd_context *cmd, const char *path, 99*86d7f5d3SJohn Marino int fail); 100*86d7f5d3SJohn Marino float find_config_tree_float(struct cmd_context *cmd, const char *path, 101*86d7f5d3SJohn Marino float fail); 102*86d7f5d3SJohn Marino 103*86d7f5d3SJohn Marino /* 104*86d7f5d3SJohn Marino * Understands (0, ~0), (y, n), (yes, no), (on, 105*86d7f5d3SJohn Marino * off), (true, false). 106*86d7f5d3SJohn Marino */ 107*86d7f5d3SJohn Marino int find_config_bool(const struct config_node *cn, const char *path, int fail); 108*86d7f5d3SJohn Marino int find_config_tree_bool(struct cmd_context *cmd, const char *path, int fail); 109*86d7f5d3SJohn Marino 110*86d7f5d3SJohn Marino int get_config_uint32(const struct config_node *cn, const char *path, 111*86d7f5d3SJohn Marino uint32_t *result); 112*86d7f5d3SJohn Marino 113*86d7f5d3SJohn Marino int get_config_uint64(const struct config_node *cn, const char *path, 114*86d7f5d3SJohn Marino uint64_t *result); 115*86d7f5d3SJohn Marino 116*86d7f5d3SJohn Marino int get_config_str(const struct config_node *cn, const char *path, 117*86d7f5d3SJohn Marino char **result); 118*86d7f5d3SJohn Marino 119*86d7f5d3SJohn Marino unsigned maybe_config_section(const char *str, unsigned len); 120*86d7f5d3SJohn Marino 121*86d7f5d3SJohn Marino const char *config_parent_name(const struct config_node *n); 122*86d7f5d3SJohn Marino 123*86d7f5d3SJohn Marino struct config_node *clone_config_node(struct dm_pool *mem, const struct config_node *cn, 124*86d7f5d3SJohn Marino int siblings); 125*86d7f5d3SJohn Marino #endif 126