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
45 #define _KERNEL_STRUCTURES
46 #include <sys/param.h>
48 #include <sys/malloc.h>
49 #include <sys/signalvar.h>
50 #include <sys/namecache.h>
51 #include <sys/mount.h>
52 #include <sys/vnode.h>
56 #include <vm/vm_page.h>
57 #include <vm/vm_kern.h>
58 #include <vm/vm_object.h>
59 #include <vm/swap_pager.h>
60 #include <vm/vnode_pager.h>
62 #include <vfs/ufs/quota.h>
63 #include <vfs/ufs/inode.h>
75 { "_vnode_list_hash" },
79 static void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes);
80 static struct mount *dumpmount(kvm_t *kd, struct mount *mp);
81 static struct vnode *dumpvp(kvm_t *kd, struct vnode *vp, int whichlist, char *vfc_name);
82 static void dumpbufs(kvm_t *kd, void *bufp, const char *id);
83 static void dumplocks(kvm_t *kd, struct lockf *lockf);
84 static void dumplockinfo(kvm_t *kd, struct lockf_range *item);
85 static int getobjpages(kvm_t *kd, struct vm_object *obj);
86 static int getobjvnpsize(kvm_t *kd, struct vm_object *obj);
88 static const struct dump_private_data {
89 char vfc_name[MFSNAMELEN];
90 void (*dumpfn)(kvm_t *, void *);
101 main(int ac, char **av)
104 struct vnode *vp_inactive;
105 struct vnode *vp_active;
106 struct vnode_index *vi;
109 const char *corefile = NULL;
110 const char *sysfile = NULL;
112 while ((ch = getopt(ac, av, "alnbM:N:p")) != -1) {
139 fprintf(stderr, "%s [-pbnla] [-M core] [-N system]\n", av[0]);
144 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
148 if (kvm_nlist(kd, Nl) != 0) {
152 kkread(kd, Nl[0].n_value, &mp, sizeof(mp));
154 mp = dumpmount(kd, mp);
155 kkread(kd, Nl[1].n_value, &vi, sizeof(struct vnode_index));
156 printf("INACTIVELIST {\n");
158 vp_inactive = dumpvp(kd, vi->inactive_list.tqh_first,
161 printf("ACTIVELIST {\n");
163 vp_active = dumpvp(kd, vi->active_list.tqh_first, 0, NULL);
168 static struct mount *
169 dumpmount(kvm_t *kd, struct mount *mp)
175 kkread(kd, (u_long)mp, &mnt, sizeof(mnt));
176 printf("MOUNTPOINT %s on %s {\n",
177 mnt.mnt_stat.f_mntfromname, mnt.mnt_stat.f_mntonname);
178 printf(" lk_flags %08x count %016jx holder = %p\n",
179 mnt.mnt_lock.lk_flags, mnt.mnt_lock.lk_count,
180 mnt.mnt_lock.lk_lockholder);
181 printf(" mnt_flag %08x mnt_kern_flag %08x\n",
182 mnt.mnt_flag, mnt.mnt_kern_flag);
183 printf(" mnt_nvnodelistsize %d\n", mnt.mnt_nvnodelistsize);
184 printf(" mnt_stat.f_fsid %08x %08x\n", mnt.mnt_stat.f_fsid.val[0],
185 mnt.mnt_stat.f_fsid.val[1]);
187 /* Dump fs private node data */
188 kkread(kd, (u_long)mnt.mnt_vfc, &vfc, sizeof(vfc));
189 vp = mnt.mnt_nvnodelist.tqh_first;
191 vp = dumpvp(kd, vp, 1, vfc.vfc_name);
195 return(mnt.mnt_list.tqe_next);
199 vtype(enum vtype type)
225 snprintf(buf, sizeof(buf), "%d", (int)type);
229 static struct vnode *
230 dumpvp(kvm_t *kd, struct vnode *vp, int whichlist, char *vfc_name)
234 kkread(kd, (u_long)vp, &vn, sizeof(vn));
236 printf(" vnode %p.%d refcnt %08x auxcnt %d type=%s flags %08x",
237 vp, vn.v_state, vn.v_refcnt, vn.v_auxrefs, vtype(vn.v_type), vn.v_flag);
239 if ((vn.v_flag & VOBJBUF) && vn.v_object) {
240 int npages = getobjpages(kd, vn.v_object);
241 int vnpsize = getobjvnpsize(kd, vn.v_object);
242 if (npages || vnpsize)
243 printf(" vmobjpgs=%d vnpsize=%d", npages, vnpsize);
246 if (vn.v_flag & VROOT)
248 if (vn.v_flag & VTEXT)
250 if (vn.v_flag & VSYSTEM)
252 if (vn.v_flag & VISTTY)
255 if (vn.v_flag & VXLOCK)
257 if (vn.v_flag & VXWANT)
261 if (vn.v_flag & VRECLAIMED)
262 printf(" VRECLAIMED");
263 if (vn.v_flag & VINACTIVE)
264 printf(" VINACTIVE");
266 if (vn.v_flag & VOBJBUF)
269 if (vn.v_flag & VSWAPCACHE)
270 printf(" VSWAPCACHE");
272 switch(vn.v_flag & (VAGE0 | VAGE1)) {
287 if (vn.v_flag & VDOOMED)
291 if (vn.v_flag & VINFREE)
294 if (vn.v_flag & VONWORKLST)
295 printf(" VONWORKLST");
296 if (vn.v_flag & VOBJDIRTY)
297 printf(" VOBJDIRTY");
298 if (vn.v_flag & VMAYHAVELOCKS)
299 printf(" VMAYHAVELOCKS");
303 if (vn.v_lock.lk_count || vn.v_lock.lk_lockholder != NULL) {
304 printf("\tlk_flags %08x count %016jx holder = %p\n",
305 vn.v_lock.lk_flags, vn.v_lock.lk_count,
306 vn.v_lock.lk_lockholder);
309 if (withnames && TAILQ_FIRST(&vn.v_namecache)) {
310 struct namecache ncp;
314 kkread(kd, (u_long)TAILQ_FIRST(&vn.v_namecache), &ncp, sizeof(ncp));
315 if ((nlen = ncp.nc_nlen) >= sizeof(buf))
316 nlen = sizeof(buf) - 1;
320 kkread(kd, (u_long)ncp.nc_name, buf, nlen);
322 printf("\tfilename %s\n", buf);
327 if (vn.v_rbclean_tree.rbh_root) {
328 printf("\tCLEAN BUFFERS\n");
329 dumpbufs(kd, vn.v_rbclean_tree.rbh_root, "ROOT");
331 if (vn.v_rbdirty_tree.rbh_root) {
332 printf("\tDIRTY BUFFERS\n");
333 dumpbufs(kd, vn.v_rbdirty_tree.rbh_root, "ROOT");
338 if (vn.v_tag == VT_UFS && vn.v_data) {
339 struct inode *ip = vn.v_data;
342 kkread(kd, (u_long)&ip->i_lockf, &lockf, sizeof(lockf));
343 dumplocks(kd, &lockf);
347 if (fsprivate && vfc_name) {
349 * Actually find whether the filesystem can dump
350 * detailed inode information out of the vnode
352 const struct dump_private_data *dpd;
354 for (dpd = dumplist; dpd->dumpfn != NULL; dpd++) {
355 if ((strcmp(dpd->vfc_name, vfc_name) == 0) &&
357 dpd->dumpfn(kd, vn.v_data);
362 return(vn.v_nmntvnodes.tqe_next);
364 return(vn.v_list.tqe_next);
368 dumpbufs(kvm_t *kd, void *bufp, const char *id)
372 kkread(kd, (u_long)bufp, &buf, sizeof(buf));
373 printf("\t %-8s %p loffset %012lx/%05x foffset %08lx",
375 buf.b_bio1.bio_offset,
377 buf.b_bio2.bio_offset);
378 printf(" q=%d count=%016jx flags=%08x refs=%08x dep=%p",
379 buf.b_qindex, buf.b_lock.lk_count,
380 buf.b_flags, buf.b_refs, buf.b_dep.lh_first);
383 if (buf.b_rbnode.rbe_left)
384 dumpbufs(kd, buf.b_rbnode.rbe_left, "LEFT");
385 if (buf.b_rbnode.rbe_right)
386 dumpbufs(kd, buf.b_rbnode.rbe_right, "RIGHT");
390 dumplocks(kvm_t *kd, struct lockf *lockf)
392 struct lockf_range item;
393 struct lockf_range *scan;
395 if ((scan = TAILQ_FIRST(&lockf->lf_range)) != NULL) {
398 kkread(kd, (u_long)scan, &item, sizeof(item));
399 dumplockinfo(kd, &item);
400 } while ((scan = TAILQ_NEXT(&item, lf_link)) != NULL);
403 if ((scan = TAILQ_FIRST(&lockf->lf_blocked)) != NULL) {
406 kkread(kd, (u_long)scan, &item, sizeof(item));
407 dumplockinfo(kd, &item);
408 } while ((scan = TAILQ_NEXT(&item, lf_link)) != NULL);
415 dumplockinfo(kvm_t *kd, struct lockf_range *item)
419 if (item->lf_owner && (item->lf_flags & F_POSIX)) {
420 kkread(kd, (u_long)&item->lf_owner->p_pid,
421 &ownerpid, sizeof(ownerpid));
426 printf("\t ty=%d flgs=%04x %ld-%ld owner=%d\n",
427 item->lf_type, item->lf_flags,
428 item->lf_start, item->lf_end,
435 getobjpages(kvm_t *kd, struct vm_object *obj)
437 struct vm_object vmobj;
439 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
440 return(vmobj.resident_page_count);
445 getobjvnpsize(kvm_t *kd, struct vm_object *obj)
447 struct vm_object vmobj;
449 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
450 return ((int)vmobj.size);
454 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
456 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {