1*8ac904ceSMartin Matuska // SPDX-License-Identifier: CDDL-1.0
2*8ac904ceSMartin Matuska /*
3*8ac904ceSMartin Matuska * CDDL HEADER START
4*8ac904ceSMartin Matuska *
5*8ac904ceSMartin Matuska * The contents of this file are subject to the terms of the
6*8ac904ceSMartin Matuska * Common Development and Distribution License (the "License").
7*8ac904ceSMartin Matuska * You may not use this file except in compliance with the License.
8*8ac904ceSMartin Matuska *
9*8ac904ceSMartin Matuska * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*8ac904ceSMartin Matuska * or https://opensource.org/licenses/CDDL-1.0.
11*8ac904ceSMartin Matuska * See the License for the specific language governing permissions
12*8ac904ceSMartin Matuska * and limitations under the License.
13*8ac904ceSMartin Matuska *
14*8ac904ceSMartin Matuska * When distributing Covered Code, include this CDDL HEADER in each
15*8ac904ceSMartin Matuska * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*8ac904ceSMartin Matuska * If applicable, add the following below this CDDL HEADER, with the
17*8ac904ceSMartin Matuska * fields enclosed by brackets "[]" replaced with your own identifying
18*8ac904ceSMartin Matuska * information: Portions Copyright [yyyy] [name of copyright owner]
19*8ac904ceSMartin Matuska *
20*8ac904ceSMartin Matuska * CDDL HEADER END
21*8ac904ceSMartin Matuska */
22*8ac904ceSMartin Matuska /*
23*8ac904ceSMartin Matuska * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24*8ac904ceSMartin Matuska * Copyright (c) 2012, 2018 by Delphix. All rights reserved.
25*8ac904ceSMartin Matuska * Copyright (c) 2016 Actifio, Inc. All rights reserved.
26*8ac904ceSMartin Matuska * Copyright (c) 2025, Klara, Inc.
27*8ac904ceSMartin Matuska */
28*8ac904ceSMartin Matuska
29*8ac904ceSMartin Matuska #include <assert.h>
30*8ac904ceSMartin Matuska #include <pthread.h>
31*8ac904ceSMartin Matuska #include <stddef.h>
32*8ac904ceSMartin Matuska #include <sys/procfs_list.h>
33*8ac904ceSMartin Matuska #include <sys/mutex.h>
34*8ac904ceSMartin Matuska #include <sys/list.h>
35*8ac904ceSMartin Matuska
36*8ac904ceSMartin Matuska /*
37*8ac904ceSMartin Matuska * =========================================================================
38*8ac904ceSMartin Matuska * procfs list
39*8ac904ceSMartin Matuska * =========================================================================
40*8ac904ceSMartin Matuska */
41*8ac904ceSMartin Matuska
42*8ac904ceSMartin Matuska void
seq_printf(struct seq_file * m,const char * fmt,...)43*8ac904ceSMartin Matuska seq_printf(struct seq_file *m, const char *fmt, ...)
44*8ac904ceSMartin Matuska {
45*8ac904ceSMartin Matuska (void) m, (void) fmt;
46*8ac904ceSMartin Matuska }
47*8ac904ceSMartin Matuska
48*8ac904ceSMartin Matuska void
procfs_list_install(const char * module,const char * submodule,const char * name,mode_t mode,procfs_list_t * procfs_list,int (* show)(struct seq_file * f,void * p),int (* show_header)(struct seq_file * f),int (* clear)(procfs_list_t * procfs_list),size_t procfs_list_node_off)49*8ac904ceSMartin Matuska procfs_list_install(const char *module,
50*8ac904ceSMartin Matuska const char *submodule,
51*8ac904ceSMartin Matuska const char *name,
52*8ac904ceSMartin Matuska mode_t mode,
53*8ac904ceSMartin Matuska procfs_list_t *procfs_list,
54*8ac904ceSMartin Matuska int (*show)(struct seq_file *f, void *p),
55*8ac904ceSMartin Matuska int (*show_header)(struct seq_file *f),
56*8ac904ceSMartin Matuska int (*clear)(procfs_list_t *procfs_list),
57*8ac904ceSMartin Matuska size_t procfs_list_node_off)
58*8ac904ceSMartin Matuska {
59*8ac904ceSMartin Matuska (void) module, (void) submodule, (void) name, (void) mode, (void) show,
60*8ac904ceSMartin Matuska (void) show_header, (void) clear;
61*8ac904ceSMartin Matuska mutex_init(&procfs_list->pl_lock, NULL, MUTEX_DEFAULT, NULL);
62*8ac904ceSMartin Matuska list_create(&procfs_list->pl_list,
63*8ac904ceSMartin Matuska procfs_list_node_off + sizeof (procfs_list_node_t),
64*8ac904ceSMartin Matuska procfs_list_node_off + offsetof(procfs_list_node_t, pln_link));
65*8ac904ceSMartin Matuska procfs_list->pl_next_id = 1;
66*8ac904ceSMartin Matuska procfs_list->pl_node_offset = procfs_list_node_off;
67*8ac904ceSMartin Matuska }
68*8ac904ceSMartin Matuska
69*8ac904ceSMartin Matuska void
procfs_list_uninstall(procfs_list_t * procfs_list)70*8ac904ceSMartin Matuska procfs_list_uninstall(procfs_list_t *procfs_list)
71*8ac904ceSMartin Matuska {
72*8ac904ceSMartin Matuska (void) procfs_list;
73*8ac904ceSMartin Matuska }
74*8ac904ceSMartin Matuska
75*8ac904ceSMartin Matuska void
procfs_list_destroy(procfs_list_t * procfs_list)76*8ac904ceSMartin Matuska procfs_list_destroy(procfs_list_t *procfs_list)
77*8ac904ceSMartin Matuska {
78*8ac904ceSMartin Matuska ASSERT(list_is_empty(&procfs_list->pl_list));
79*8ac904ceSMartin Matuska list_destroy(&procfs_list->pl_list);
80*8ac904ceSMartin Matuska mutex_destroy(&procfs_list->pl_lock);
81*8ac904ceSMartin Matuska }
82*8ac904ceSMartin Matuska
83*8ac904ceSMartin Matuska #define NODE_ID(procfs_list, obj) \
84*8ac904ceSMartin Matuska (((procfs_list_node_t *)(((char *)obj) + \
85*8ac904ceSMartin Matuska (procfs_list)->pl_node_offset))->pln_id)
86*8ac904ceSMartin Matuska
87*8ac904ceSMartin Matuska void
procfs_list_add(procfs_list_t * procfs_list,void * p)88*8ac904ceSMartin Matuska procfs_list_add(procfs_list_t *procfs_list, void *p)
89*8ac904ceSMartin Matuska {
90*8ac904ceSMartin Matuska ASSERT(MUTEX_HELD(&procfs_list->pl_lock));
91*8ac904ceSMartin Matuska NODE_ID(procfs_list, p) = procfs_list->pl_next_id++;
92*8ac904ceSMartin Matuska list_insert_tail(&procfs_list->pl_list, p);
93*8ac904ceSMartin Matuska }
94