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 1.5 2005/03/24 20:14:42 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);
79 static int getobjvnpsize(kvm_t *kd, struct vm_object *obj);
81 main(int ac, char **av)
88 const char *corefile = NULL;
89 const char *sysfile = NULL;
91 while ((ch = getopt(ac, av, "M:N:")) != -1) {
100 fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
105 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
109 if (kvm_nlist(kd, Nl) != 0) {
113 kkread(kd, Nl[0].n_value, &mp, sizeof(mp));
115 mp = dumpmount(kd, mp);
116 kkread(kd, Nl[1].n_value, &vp, sizeof(vp));
117 printf("VNODEFREELIST {\n");
119 vp = dumpvp(kd, vp, 0);
124 static struct mount *
125 dumpmount(kvm_t *kd, struct mount *mp)
130 kkread(kd, (u_long)mp, &mnt, sizeof(mnt));
131 printf("MOUNTPOINT %s on %s {\n",
132 mnt.mnt_stat.f_mntfromname, mnt.mnt_stat.f_mntonname);
133 printf(" lk_flags %08x share %d wait %d excl %d holder = %p\n",
134 mnt.mnt_lock.lk_flags, mnt.mnt_lock.lk_sharecount,
135 mnt.mnt_lock.lk_waitcount, mnt.mnt_lock.lk_exclusivecount,
136 mnt.mnt_lock.lk_lockholder);
137 printf(" mnt_flag %08x mnt_kern_flag %08x\n",
138 mnt.mnt_flag, mnt.mnt_kern_flag);
139 printf(" mnt_nvnodelistsize %d\n", mnt.mnt_nvnodelistsize);
140 vp = mnt.mnt_nvnodelist.tqh_first;
142 vp = dumpvp(kd, vp, 1);
146 return(mnt.mnt_list.tqe_next);
150 vtype(enum vtype type)
176 snprintf(buf, sizeof(buf), "%d", (int)type);
180 static struct vnode *
181 dumpvp(kvm_t *kd, struct vnode *vp, int whichlist)
185 kkread(kd, (u_long)vp, &vn, sizeof(vn));
187 printf(" vnode %p usecnt %d holdcnt %d type=%s flags %08x",
188 vp, vn.v_usecount, vn.v_holdcnt, vtype(vn.v_type), vn.v_flag);
190 if ((vn.v_flag & VOBJBUF) && vn.v_object) {
191 int npages = getobjpages(kd, vn.v_object);
192 int vnpsize = getobjvnpsize(kd, vn.v_object);
193 if (npages || vnpsize)
194 printf(" vmobjpgs=%d vnpsize=%d", npages, vnpsize);
197 if (vn.v_flag & VROOT)
199 if (vn.v_flag & VTEXT)
201 if (vn.v_flag & VSYSTEM)
203 if (vn.v_flag & VISTTY)
206 if (vn.v_flag & VXLOCK)
208 if (vn.v_flag & VXWANT)
212 if (vn.v_flag & VRECLAIMED)
213 printf(" VRECLAIMED");
214 if (vn.v_flag & VINACTIVE)
215 printf(" VINACTIVE");
217 if (vn.v_flag & VBWAIT)
219 if (vn.v_flag & VOBJBUF)
221 if (vn.v_flag & VAGE)
223 if (vn.v_flag & VOLOCK)
225 if (vn.v_flag & VOWANT)
228 if (vn.v_flag & VDOOMED)
231 if (vn.v_flag & VFREE)
234 if (vn.v_flag & VINFREE)
237 if (vn.v_flag & VONWORKLST)
238 printf(" VONWORKLST");
239 if (vn.v_flag & VMOUNT)
241 if (vn.v_flag & VOBJDIRTY)
242 printf(" VOBJDIRTY");
243 if (vn.v_flag & VPLACEMARKER)
244 printf(" VPLACEMARKER");
248 if (vn.v_lock.lk_sharecount || vn.v_lock.lk_waitcount ||
249 vn.v_lock.lk_exclusivecount || vn.v_lock.lk_lockholder != LK_NOTHREAD) {
250 printf("\tlk_flags %08x share %d wait %d excl %d holder = %p\n",
251 vn.v_lock.lk_flags, vn.v_lock.lk_sharecount,
252 vn.v_lock.lk_waitcount, vn.v_lock.lk_exclusivecount,
253 vn.v_lock.lk_lockholder);
257 return(vn.v_nmntvnodes.tqe_next);
259 return(vn.v_freelist.tqe_next);
264 getobjpages(kvm_t *kd, struct vm_object *obj)
266 struct vm_object vmobj;
268 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
269 return(vmobj.resident_page_count);
274 getobjvnpsize(kvm_t *kd, struct vm_object *obj)
276 struct vm_object vmobj;
278 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
279 return(vmobj.un_pager.vnp.vnp_size);
283 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
285 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {