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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "lint.h" 30 #include <sys/rctl_impl.h> 31 #include <stdlib.h> 32 #include <string.h> 33 #include <rctl.h> 34 35 /* 36 * Resource control routines 37 * 38 * rctl_walk(3C) 39 * 40 * Resource control block manipulation routines 41 * The setrctl(2) and getrctl(2) interfaces are accessed via opaque resource 42 * control blocks, the characteristics of which are in turn set and fetched 43 * using the following functions. Applications using the following interfaces 44 * will be binary compatible across enhancements to the resource control 45 * subsystem that involve modification of the control block. 46 */ 47 int 48 rctl_walk(int (*callback)(const char *rctlname, void *walk_data), 49 void *init_data) 50 { 51 int ret = 0; 52 char *ctl_names, *curr_name; 53 size_t sz = rctllist(NULL, 0); 54 55 if ((ctl_names = malloc(sz)) == NULL) 56 return (-1); 57 58 (void) rctllist(ctl_names, sz); 59 60 for (curr_name = ctl_names; 61 curr_name < ctl_names + sz; 62 curr_name += strlen(curr_name) + 1) { 63 if (ret = callback(curr_name, init_data)) { 64 free(ctl_names); 65 return (ret); 66 } 67 } 68 69 free(ctl_names); 70 return (ret); 71 } 72 73 uint_t 74 rctlblk_get_global_action(rctlblk_t *rblk) 75 { 76 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 77 78 return (ropaque->rcq_global_flagaction & (~RCTL_GLOBAL_ACTION_MASK)); 79 } 80 81 uint_t 82 rctlblk_get_local_action(rctlblk_t *rblk, int *signal) 83 { 84 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 85 86 if (signal != NULL) 87 *signal = ropaque->rcq_local_signal; 88 return (ropaque->rcq_local_flagaction & (~RCTL_LOCAL_ACTION_MASK)); 89 } 90 91 uint_t 92 rctlblk_get_global_flags(rctlblk_t *rblk) 93 { 94 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 95 96 return (ropaque->rcq_global_flagaction & RCTL_GLOBAL_ACTION_MASK); 97 } 98 99 uint_t 100 rctlblk_get_local_flags(rctlblk_t *rblk) 101 { 102 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 103 104 return (ropaque->rcq_local_flagaction & RCTL_LOCAL_ACTION_MASK); 105 } 106 107 hrtime_t 108 rctlblk_get_firing_time(rctlblk_t *rblk) 109 { 110 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 111 112 return (ropaque->rcq_firing_time); 113 } 114 115 id_t 116 rctlblk_get_recipient_pid(rctlblk_t *rblk) 117 { 118 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 119 120 return (ropaque->rcq_local_recipient_pid); 121 } 122 123 rctl_priv_t 124 rctlblk_get_privilege(rctlblk_t *rblk) 125 { 126 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 127 return (ropaque->rcq_privilege); 128 } 129 130 rctl_qty_t 131 rctlblk_get_value(rctlblk_t *rblk) 132 { 133 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 134 return (ropaque->rcq_value); 135 } 136 137 rctl_qty_t 138 rctlblk_get_enforced_value(rctlblk_t *rblk) 139 { 140 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 141 return (ropaque->rcq_enforced_value); 142 } 143 144 void 145 rctlblk_set_local_action(rctlblk_t *rblk, uint_t action, int signal) 146 { 147 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 148 ropaque->rcq_local_signal = signal; 149 ropaque->rcq_local_flagaction = (ropaque->rcq_local_flagaction & 150 RCTL_LOCAL_ACTION_MASK) | (action & ~RCTL_LOCAL_ACTION_MASK); 151 } 152 153 void 154 rctlblk_set_local_flags(rctlblk_t *rblk, uint_t flags) 155 { 156 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 157 ropaque->rcq_local_flagaction = (ropaque->rcq_local_flagaction & 158 ~RCTL_LOCAL_ACTION_MASK) | (flags & RCTL_LOCAL_ACTION_MASK); 159 } 160 161 void 162 rctlblk_set_recipient_pid(rctlblk_t *rblk, id_t pid) 163 { 164 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 165 ropaque->rcq_local_recipient_pid = pid; 166 } 167 168 void 169 rctlblk_set_privilege(rctlblk_t *rblk, rctl_priv_t privilege) 170 { 171 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 172 ropaque->rcq_privilege = privilege; 173 } 174 175 void 176 rctlblk_set_value(rctlblk_t *rblk, rctl_qty_t value) 177 { 178 rctl_opaque_t *ropaque = (rctl_opaque_t *)rblk; 179 ropaque->rcq_value = value; 180 } 181 182 size_t 183 rctlblk_size(void) 184 { 185 return (sizeof (rctl_opaque_t)); 186 } 187