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 1.10 2006/06/02 19:39:48 dillon Exp $
46 #define _KERNEL_STRUCTURES_
47 #include <sys/param.h>
49 #include <sys/malloc.h>
50 #include <sys/signalvar.h>
51 #include <sys/namecache.h>
52 #include <sys/mount.h>
53 #include <sys/vnode.h>
57 #include <vm/vm_page.h>
58 #include <vm/vm_kern.h>
59 #include <vm/vm_object.h>
60 #include <vm/swap_pager.h>
61 #include <vm/vnode_pager.h>
73 { "_vnode_free_list" },
77 static void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes);
78 static struct mount *dumpmount(kvm_t *kd, struct mount *mp);
79 static struct vnode *dumpvp(kvm_t *kd, struct vnode *vp, int whichlist);
80 static void dumpbufs(kvm_t *kd, void *bufp, const char *id);
81 static int getobjpages(kvm_t *kd, struct vm_object *obj);
82 static int getobjvnpsize(kvm_t *kd, struct vm_object *obj);
88 main(int ac, char **av)
95 const char *corefile = NULL;
96 const char *sysfile = NULL;
98 while ((ch = getopt(ac, av, "anbM:N:")) != -1) {
117 fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
122 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
126 if (kvm_nlist(kd, Nl) != 0) {
130 kkread(kd, Nl[0].n_value, &mp, sizeof(mp));
132 mp = dumpmount(kd, mp);
133 kkread(kd, Nl[1].n_value, &vp, sizeof(vp));
134 printf("VNODEFREELIST {\n");
136 vp = dumpvp(kd, vp, 0);
141 static struct mount *
142 dumpmount(kvm_t *kd, struct mount *mp)
147 kkread(kd, (u_long)mp, &mnt, sizeof(mnt));
148 printf("MOUNTPOINT %s on %s {\n",
149 mnt.mnt_stat.f_mntfromname, mnt.mnt_stat.f_mntonname);
150 printf(" lk_flags %08x share %d wait %d excl %d holder = %p\n",
151 mnt.mnt_lock.lk_flags, mnt.mnt_lock.lk_sharecount,
152 mnt.mnt_lock.lk_waitcount, mnt.mnt_lock.lk_exclusivecount,
153 mnt.mnt_lock.lk_lockholder);
154 printf(" mnt_flag %08x mnt_kern_flag %08x\n",
155 mnt.mnt_flag, mnt.mnt_kern_flag);
156 printf(" mnt_nvnodelistsize %d\n", mnt.mnt_nvnodelistsize);
157 printf(" mnt_stat.f_fsid %08x %08x\n", mnt.mnt_stat.f_fsid.val[0],
158 mnt.mnt_stat.f_fsid.val[1]);
159 vp = mnt.mnt_nvnodelist.tqh_first;
161 vp = dumpvp(kd, vp, 1);
165 return(mnt.mnt_list.tqe_next);
169 vtype(enum vtype type)
195 snprintf(buf, sizeof(buf), "%d", (int)type);
199 static struct vnode *
200 dumpvp(kvm_t *kd, struct vnode *vp, int whichlist)
204 kkread(kd, (u_long)vp, &vn, sizeof(vn));
206 printf(" vnode %p usecnt %d holdcnt %d type=%s flags %08x",
207 vp, vn.v_usecount, vn.v_holdcnt, vtype(vn.v_type), vn.v_flag);
209 if ((vn.v_flag & VOBJBUF) && vn.v_object) {
210 int npages = getobjpages(kd, vn.v_object);
211 int vnpsize = getobjvnpsize(kd, vn.v_object);
212 if (npages || vnpsize)
213 printf(" vmobjpgs=%d vnpsize=%d", npages, vnpsize);
216 if (vn.v_flag & VROOT)
218 if (vn.v_flag & VTEXT)
220 if (vn.v_flag & VSYSTEM)
222 if (vn.v_flag & VISTTY)
225 if (vn.v_flag & VXLOCK)
227 if (vn.v_flag & VXWANT)
231 if (vn.v_flag & VRECLAIMED)
232 printf(" VRECLAIMED");
233 if (vn.v_flag & VINACTIVE)
234 printf(" VINACTIVE");
236 if (vn.v_flag & VOBJBUF)
238 if (vn.v_flag & VAGE)
240 if (vn.v_flag & VOLOCK)
242 if (vn.v_flag & VOWANT)
245 if (vn.v_flag & VDOOMED)
248 if (vn.v_flag & VFREE)
251 if (vn.v_flag & VINFREE)
254 if (vn.v_flag & VONWORKLST)
255 printf(" VONWORKLST");
256 if (vn.v_flag & VMOUNT)
258 if (vn.v_flag & VOBJDIRTY)
259 printf(" VOBJDIRTY");
263 if (vn.v_lock.lk_sharecount || vn.v_lock.lk_waitcount ||
264 vn.v_lock.lk_exclusivecount || vn.v_lock.lk_lockholder != LK_NOTHREAD) {
265 printf("\tlk_flags %08x share %d wait %d excl %d holder = %p\n",
266 vn.v_lock.lk_flags, vn.v_lock.lk_sharecount,
267 vn.v_lock.lk_waitcount, vn.v_lock.lk_exclusivecount,
268 vn.v_lock.lk_lockholder);
271 if (withnames && TAILQ_FIRST(&vn.v_namecache)) {
272 struct namecache ncp;
276 kkread(kd, (u_long)TAILQ_FIRST(&vn.v_namecache), &ncp, sizeof(ncp));
277 if ((nlen = ncp.nc_nlen) >= sizeof(buf))
278 nlen = sizeof(buf) - 1;
282 kkread(kd, (u_long)ncp.nc_name, buf, nlen);
284 printf("\tfilename %s\n", buf);
289 if (vn.v_rbclean_tree.rbh_root) {
290 printf("\tCLEAN BUFFERS\n");
291 dumpbufs(kd, vn.v_rbclean_tree.rbh_root, "ROOT");
293 if (vn.v_rbdirty_tree.rbh_root) {
294 printf("\tDIRTY BUFFERS\n");
295 dumpbufs(kd, vn.v_rbdirty_tree.rbh_root, "ROOT");
300 return(vn.v_nmntvnodes.tqe_next);
302 return(vn.v_freelist.tqe_next);
306 dumpbufs(kvm_t *kd, void *bufp, const char *id)
310 kkread(kd, (u_long)bufp, &buf, sizeof(buf));
311 printf("\t %-8s %p loffset %08llx foffset %08llx\n",
313 buf.b_bio1.bio_offset,
314 buf.b_bio2.bio_offset);
316 if (buf.b_rbnode.rbe_left)
317 dumpbufs(kd, buf.b_rbnode.rbe_left, "LEFT");
318 if (buf.b_rbnode.rbe_right)
319 dumpbufs(kd, buf.b_rbnode.rbe_right, "RIGHT");
324 getobjpages(kvm_t *kd, struct vm_object *obj)
326 struct vm_object vmobj;
328 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
329 return(vmobj.resident_page_count);
334 getobjvnpsize(kvm_t *kd, struct vm_object *obj)
336 struct vm_object vmobj;
338 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
339 return ((int)vmobj.size);
343 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
345 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {