2 * Copyright (c) 2016 Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
3 * Copyright (c) 2016 The DragonFly Project
4 * Copyright (c) 2014 The FreeBSD Foundation
7 * This software was developed by Edward Tomasz Napierala under sponsorship
8 * from the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <sys/kernel.h>
38 #include <sys/module.h>
39 #include <sys/types.h>
40 #include <sys/systm.h>
41 #include <sys/malloc.h>
42 #include <sys/objcache.h>
45 #include <sys/mutex2.h>
46 #include <sys/condvar.h>
47 #include <sys/mount.h>
48 #include <sys/vnode.h>
49 #include <sys/timespec.h>
50 #include <sys/callout.h>
51 #include <sys/taskqueue.h>
55 #define AUTOFS_ROOTINO ((ino_t)1)
56 #define VFSTOAUTOFS(mp) ((struct autofs_mount *)((mp)->mnt_data))
57 #define VTOI(vp) ((struct autofs_node *)((vp)->v_data))
59 MALLOC_DECLARE(M_AUTOFS);
61 extern struct objcache *autofs_request_objcache;
62 extern struct objcache *autofs_node_objcache;
63 extern struct autofs_softc *autofs_softc;
64 extern struct dev_ops autofs_ops;
66 extern struct vop_ops autofs_vnode_vops;
68 extern int autofs_debug;
69 //extern int autofs_mount_on_stat;
71 #define AUTOFS_DEBUG(X, ...) \
73 if (autofs_debug > 1) \
74 kprintf("%s: " X "\n", \
75 __func__, ## __VA_ARGS__); \
78 #define AUTOFS_WARN(X, ...) \
80 if (autofs_debug > 0) { \
81 kprintf("WARNING: %s: " X "\n", \
82 __func__, ## __VA_ARGS__); \
86 #define AUTOFS_FATAL(X, ...) \
87 kprintf("FATAL: %s: " X "\n", __func__, ## __VA_ARGS__)
90 * APRINTF is only for debugging.
92 #define APRINTF(X, ...) \
93 kprintf("### %s(%s): " X, \
94 __func__, curproc->p_comm, ## __VA_ARGS__)
97 RB_ENTRY(autofs_node) an_link;
100 struct autofs_node *an_parent;
101 RB_HEAD(autofs_node_tree,
102 autofs_node) an_children;
103 struct autofs_mount *an_mount;
104 struct vnode *an_vnode;
108 struct callout an_callout;
110 struct timespec an_ctime;
113 struct autofs_mount {
114 TAILQ_ENTRY(autofs_mount) am_next;
115 struct autofs_node *am_root;
118 char am_from[MAXPATHLEN];
119 char am_on[MAXPATHLEN];
120 char am_options[MAXPATHLEN];
121 char am_prefix[MAXPATHLEN];
125 struct autofs_request {
126 TAILQ_ENTRY(autofs_request) ar_next;
127 struct autofs_mount *ar_mount;
133 char ar_from[MAXPATHLEN];
134 char ar_path[MAXPATHLEN];
135 char ar_prefix[MAXPATHLEN];
136 char ar_key[MAXPATHLEN];
137 char ar_options[MAXPATHLEN];
138 struct timeout_task ar_task;
139 volatile u_int ar_refcount;
142 struct autofs_softc {
144 struct cdev *sc_cdev;
147 TAILQ_HEAD(, autofs_request) sc_requests;
150 int sc_last_request_id;
153 int autofs_trigger(struct autofs_node *anp, const char *component,
155 bool autofs_cached(struct autofs_node *anp, const char *component,
157 char* autofs_path(struct autofs_node *anp);
158 void autofs_flush(struct autofs_mount *amp);
159 bool autofs_ignore_thread(void);
160 int autofs_node_new(struct autofs_node *parent, struct autofs_mount *amp,
161 const char *name, int namelen, struct autofs_node **anpp);
162 int autofs_node_find(struct autofs_node *parent,
163 const char *name, int namelen, struct autofs_node **anpp);
164 void autofs_node_delete(struct autofs_node *anp);
165 int autofs_node_vn(struct autofs_node *anp, struct mount *mp,
166 int flags, struct vnode **vpp);
169 autofs_node_cache(struct autofs_node *anp)
171 anp->an_cached = true;
175 autofs_node_uncache(struct autofs_node *anp)
177 anp->an_cached = false;
180 RB_PROTOTYPE(autofs_node_tree, autofs_node, an_link, autofs_node_cmp);
182 #endif /* !AUTOFS_H */