1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2012, 2018 by Delphix. All rights reserved. 25 * Copyright (c) 2016 Actifio, Inc. All rights reserved. 26 * Copyright (c) 2025, Klara, Inc. 27 */ 28 29 #include <assert.h> 30 #include <pthread.h> 31 #include <stddef.h> 32 #include <sys/procfs_list.h> 33 #include <sys/mutex.h> 34 #include <sys/list.h> 35 36 /* 37 * ========================================================================= 38 * procfs list 39 * ========================================================================= 40 */ 41 42 void 43 seq_printf(struct seq_file *m, const char *fmt, ...) 44 { 45 (void) m, (void) fmt; 46 } 47 48 void 49 procfs_list_install(const char *module, 50 const char *submodule, 51 const char *name, 52 mode_t mode, 53 procfs_list_t *procfs_list, 54 int (*show)(struct seq_file *f, void *p), 55 int (*show_header)(struct seq_file *f), 56 int (*clear)(procfs_list_t *procfs_list), 57 size_t procfs_list_node_off) 58 { 59 (void) module, (void) submodule, (void) name, (void) mode, (void) show, 60 (void) show_header, (void) clear; 61 mutex_init(&procfs_list->pl_lock, NULL, MUTEX_DEFAULT, NULL); 62 list_create(&procfs_list->pl_list, 63 procfs_list_node_off + sizeof (procfs_list_node_t), 64 procfs_list_node_off + offsetof(procfs_list_node_t, pln_link)); 65 procfs_list->pl_next_id = 1; 66 procfs_list->pl_node_offset = procfs_list_node_off; 67 } 68 69 void 70 procfs_list_uninstall(procfs_list_t *procfs_list) 71 { 72 (void) procfs_list; 73 } 74 75 void 76 procfs_list_destroy(procfs_list_t *procfs_list) 77 { 78 ASSERT(list_is_empty(&procfs_list->pl_list)); 79 list_destroy(&procfs_list->pl_list); 80 mutex_destroy(&procfs_list->pl_lock); 81 } 82 83 #define NODE_ID(procfs_list, obj) \ 84 (((procfs_list_node_t *)(((char *)obj) + \ 85 (procfs_list)->pl_node_offset))->pln_id) 86 87 void 88 procfs_list_add(procfs_list_t *procfs_list, void *p) 89 { 90 ASSERT(MUTEX_HELD(&procfs_list->pl_lock)); 91 NODE_ID(procfs_list, p) = procfs_list->pl_next_id++; 92 list_insert_tail(&procfs_list->pl_list, p); 93 } 94