4 * cc -I/usr/src/sys vnodeinfo.c -o /usr/local/bin/vnodeinfo -lkvm
8 * Dump the mountlist and related vnodes.
11 * Copyright (c) 2004 The DragonFly Project. All rights reserved.
13 * This code is derived from software contributed to The DragonFly Project
14 * by Matthew Dillon <dillon@backplane.com>
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in
24 * the documentation and/or other materials provided with the
26 * 3. Neither the name of The DragonFly Project nor the names of its
27 * contributors may be used to endorse or promote products derived
28 * from this software without specific, prior written permission.
30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
31 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
32 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
33 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
34 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
35 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
36 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
38 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
39 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
40 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * $DragonFly: src/test/debug/vnodeinfo.c,v 1.4 2004/10/14 20:54:11 dillon Exp $
46 #define _KERNEL_STRUCTURES_
47 #include <sys/param.h>
49 #include <sys/malloc.h>
50 #include <sys/signalvar.h>
51 #include <sys/mount.h>
52 #include <sys/vnode.h>
55 #include <vm/vm_page.h>
56 #include <vm/vm_kern.h>
57 #include <vm/vm_object.h>
58 #include <vm/swap_pager.h>
59 #include <vm/vnode_pager.h>
71 { "_vnode_free_list" },
75 static void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes);
76 static struct mount *dumpmount(kvm_t *kd, struct mount *mp);
77 static struct vnode *dumpvp(kvm_t *kd, struct vnode *vp, int whichlist);
78 static int getobjpages(kvm_t *kd, struct vm_object *obj);
80 main(int ac, char **av)
87 const char *corefile = NULL;
88 const char *sysfile = NULL;
90 while ((ch = getopt(ac, av, "M:N:")) != -1) {
99 fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
104 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
108 if (kvm_nlist(kd, Nl) != 0) {
112 kkread(kd, Nl[0].n_value, &mp, sizeof(mp));
114 mp = dumpmount(kd, mp);
115 kkread(kd, Nl[1].n_value, &vp, sizeof(vp));
116 printf("VNODEFREELIST {\n");
118 vp = dumpvp(kd, vp, 0);
123 static struct mount *
124 dumpmount(kvm_t *kd, struct mount *mp)
129 kkread(kd, (u_long)mp, &mnt, sizeof(mnt));
130 printf("MOUNTPOINT %s on %s {\n",
131 mnt.mnt_stat.f_mntfromname, mnt.mnt_stat.f_mntonname);
132 printf(" lk_flags %08x share %d wait %d excl %d holder = %p\n",
133 mnt.mnt_lock.lk_flags, mnt.mnt_lock.lk_sharecount,
134 mnt.mnt_lock.lk_waitcount, mnt.mnt_lock.lk_exclusivecount,
135 mnt.mnt_lock.lk_lockholder);
136 printf(" mnt_flag %08x mnt_kern_flag %08x\n",
137 mnt.mnt_flag, mnt.mnt_kern_flag);
138 printf(" mnt_nvnodelistsize %d\n", mnt.mnt_nvnodelistsize);
139 vp = mnt.mnt_nvnodelist.tqh_first;
141 vp = dumpvp(kd, vp, 1);
145 return(mnt.mnt_list.tqe_next);
149 vtype(enum vtype type)
175 snprintf(buf, sizeof(buf), "%d", (int)type);
179 static struct vnode *
180 dumpvp(kvm_t *kd, struct vnode *vp, int whichlist)
184 kkread(kd, (u_long)vp, &vn, sizeof(vn));
186 printf(" vnode %p usecnt %d holdcnt %d type=%s flags %08x",
187 vp, vn.v_usecount, vn.v_holdcnt, vtype(vn.v_type), vn.v_flag);
189 if ((vn.v_flag & VOBJBUF) && vn.v_object) {
190 int npages = getobjpages(kd, vn.v_object);
192 printf(" vmobjpgs=%d", npages);
195 if (vn.v_flag & VROOT)
197 if (vn.v_flag & VTEXT)
199 if (vn.v_flag & VSYSTEM)
201 if (vn.v_flag & VISTTY)
204 if (vn.v_flag & VXLOCK)
206 if (vn.v_flag & VXWANT)
210 if (vn.v_flag & VRECLAIMED)
211 printf(" VRECLAIMED");
212 if (vn.v_flag & VINACTIVE)
213 printf(" VINACTIVE");
215 if (vn.v_flag & VBWAIT)
217 if (vn.v_flag & VOBJBUF)
219 if (vn.v_flag & VAGE)
221 if (vn.v_flag & VOLOCK)
223 if (vn.v_flag & VOWANT)
226 if (vn.v_flag & VDOOMED)
229 if (vn.v_flag & VFREE)
232 if (vn.v_flag & VINFREE)
235 if (vn.v_flag & VONWORKLST)
236 printf(" VONWORKLST");
237 if (vn.v_flag & VMOUNT)
239 if (vn.v_flag & VOBJDIRTY)
240 printf(" VOBJDIRTY");
241 if (vn.v_flag & VPLACEMARKER)
242 printf(" VPLACEMARKER");
246 if (vn.v_lock.lk_sharecount || vn.v_lock.lk_waitcount ||
247 vn.v_lock.lk_exclusivecount || vn.v_lock.lk_lockholder != LK_NOTHREAD) {
248 printf("\tlk_flags %08x share %d wait %d excl %d holder = %p\n",
249 vn.v_lock.lk_flags, vn.v_lock.lk_sharecount,
250 vn.v_lock.lk_waitcount, vn.v_lock.lk_exclusivecount,
251 vn.v_lock.lk_lockholder);
255 return(vn.v_nmntvnodes.tqe_next);
257 return(vn.v_freelist.tqe_next);
262 getobjpages(kvm_t *kd, struct vm_object *obj)
264 struct vm_object vmobj;
266 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
267 return(vmobj.resident_page_count);
271 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
273 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {