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 * Copyright (c) 2018 by Delphix. All rights reserved. 23 */ 24 25 #ifndef _SPL_PROCFS_LIST_H 26 #define _SPL_PROCFS_LIST_H 27 28 #include <sys/kstat.h> 29 #include <sys/mutex.h> 30 #include <linux/proc_fs.h> 31 #include <linux/seq_file.h> 32 33 typedef struct procfs_list procfs_list_t; 34 struct procfs_list { 35 /* Accessed only by user of a procfs_list */ 36 void *pl_private; 37 38 /* 39 * Accessed both by user of a procfs_list and by procfs_list 40 * implementation 41 */ 42 kmutex_t pl_lock; 43 list_t pl_list; 44 45 /* Accessed only by procfs_list implementation */ 46 uint64_t pl_next_id; 47 int (*pl_show)(struct seq_file *f, void *p); 48 int (*pl_show_header)(struct seq_file *f); 49 int (*pl_clear)(procfs_list_t *procfs_list); 50 size_t pl_node_offset; 51 kstat_proc_entry_t pl_kstat_entry; 52 }; 53 54 typedef struct procfs_list_node { 55 list_node_t pln_link; 56 uint64_t pln_id; 57 } procfs_list_node_t; 58 59 void procfs_list_install(const char *module, 60 const char *submodule, 61 const char *name, 62 mode_t mode, 63 procfs_list_t *procfs_list, 64 int (*show)(struct seq_file *f, void *p), 65 int (*show_header)(struct seq_file *f), 66 int (*clear)(procfs_list_t *procfs_list), 67 size_t procfs_list_node_off); 68 void procfs_list_uninstall(procfs_list_t *procfs_list); 69 void procfs_list_destroy(procfs_list_t *procfs_list); 70 71 void procfs_list_add(procfs_list_t *procfs_list, void *p); 72 73 #endif /* _SPL_PROCFS_LIST_H */ 74