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_inactive_list" },
76 { "_vnode_active_list" },
80 static void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes);
81 static struct mount *dumpmount(kvm_t *kd, struct mount *mp);
82 static struct vnode *dumpvp(kvm_t *kd, struct vnode *vp, int whichlist, char *vfc_name);
83 static void dumpbufs(kvm_t *kd, void *bufp, const char *id);
84 static void dumplocks(kvm_t *kd, struct lockf *lockf);
85 static void dumplockinfo(kvm_t *kd, struct lockf_range *item);
86 static int getobjpages(kvm_t *kd, struct vm_object *obj);
87 static int getobjvnpsize(kvm_t *kd, struct vm_object *obj);
89 static const struct dump_private_data {
90 char vfc_name[MFSNAMELEN];
91 void (*dumpfn)(kvm_t *, void *);
102 main(int ac, char **av)
108 const char *corefile = NULL;
109 const char *sysfile = NULL;
111 while ((ch = getopt(ac, av, "alnbM:N:p")) != -1) {
138 fprintf(stderr, "%s [-pbnla] [-M core] [-N system]\n", av[0]);
143 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
147 if (kvm_nlist(kd, Nl) != 0) {
151 kkread(kd, Nl[0].n_value, &mp, sizeof(mp));
153 mp = dumpmount(kd, mp);
154 printf("INACTIVELIST {\n");
155 kkread(kd, Nl[1].n_value, &vp, sizeof(vp));
157 vp = dumpvp(kd, vp, 0, NULL);
159 printf("ACTIVELIST {\n");
160 kkread(kd, Nl[2].n_value, &vp, sizeof(vp));
162 vp = dumpvp(kd, vp, 0, NULL);
167 static struct mount *
168 dumpmount(kvm_t *kd, struct mount *mp)
174 kkread(kd, (u_long)mp, &mnt, sizeof(mnt));
175 printf("MOUNTPOINT %s on %s {\n",
176 mnt.mnt_stat.f_mntfromname, mnt.mnt_stat.f_mntonname);
177 printf(" lk_flags %08x count %08x holder = %p\n",
178 mnt.mnt_lock.lk_flags, mnt.mnt_lock.lk_count,
179 mnt.mnt_lock.lk_lockholder);
180 printf(" mnt_flag %08x mnt_kern_flag %08x\n",
181 mnt.mnt_flag, mnt.mnt_kern_flag);
182 printf(" mnt_nvnodelistsize %d\n", mnt.mnt_nvnodelistsize);
183 printf(" mnt_stat.f_fsid %08x %08x\n", mnt.mnt_stat.f_fsid.val[0],
184 mnt.mnt_stat.f_fsid.val[1]);
186 /* Dump fs private node data */
187 kkread(kd, (u_long)mnt.mnt_vfc, &vfc, sizeof(vfc));
188 vp = mnt.mnt_nvnodelist.tqh_first;
190 vp = dumpvp(kd, vp, 1, vfc.vfc_name);
194 return(mnt.mnt_list.tqe_next);
198 vtype(enum vtype type)
224 snprintf(buf, sizeof(buf), "%d", (int)type);
228 static struct vnode *
229 dumpvp(kvm_t *kd, struct vnode *vp, int whichlist, char *vfc_name)
233 kkread(kd, (u_long)vp, &vn, sizeof(vn));
235 printf(" vnode %p.%d refcnt %08x auxcnt %d type=%s flags %08x",
236 vp, vn.v_state, vn.v_refcnt, vn.v_auxrefs, vtype(vn.v_type), vn.v_flag);
238 if ((vn.v_flag & VOBJBUF) && vn.v_object) {
239 int npages = getobjpages(kd, vn.v_object);
240 int vnpsize = getobjvnpsize(kd, vn.v_object);
241 if (npages || vnpsize)
242 printf(" vmobjpgs=%d vnpsize=%d", npages, vnpsize);
245 if (vn.v_flag & VROOT)
247 if (vn.v_flag & VTEXT)
249 if (vn.v_flag & VSYSTEM)
251 if (vn.v_flag & VISTTY)
254 if (vn.v_flag & VXLOCK)
256 if (vn.v_flag & VXWANT)
260 if (vn.v_flag & VRECLAIMED)
261 printf(" VRECLAIMED");
262 if (vn.v_flag & VINACTIVE)
263 printf(" VINACTIVE");
265 if (vn.v_flag & VOBJBUF)
268 if (vn.v_flag & VSWAPCACHE)
269 printf(" VSWAPCACHE");
271 switch(vn.v_flag & (VAGE0 | VAGE1)) {
286 if (vn.v_flag & VDOOMED)
290 if (vn.v_flag & VINFREE)
293 if (vn.v_flag & VONWORKLST)
294 printf(" VONWORKLST");
295 if (vn.v_flag & VOBJDIRTY)
296 printf(" VOBJDIRTY");
297 if (vn.v_flag & VMAYHAVELOCKS)
298 printf(" VMAYHAVELOCKS");
302 if (vn.v_lock.lk_count || vn.v_lock.lk_lockholder != LK_NOTHREAD) {
303 printf("\tlk_flags %08x count %08x holder = %p\n",
304 vn.v_lock.lk_flags, vn.v_lock.lk_count,
305 vn.v_lock.lk_lockholder);
308 if (withnames && TAILQ_FIRST(&vn.v_namecache)) {
309 struct namecache ncp;
313 kkread(kd, (u_long)TAILQ_FIRST(&vn.v_namecache), &ncp, sizeof(ncp));
314 if ((nlen = ncp.nc_nlen) >= sizeof(buf))
315 nlen = sizeof(buf) - 1;
319 kkread(kd, (u_long)ncp.nc_name, buf, nlen);
321 printf("\tfilename %s\n", buf);
326 if (vn.v_rbclean_tree.rbh_root) {
327 printf("\tCLEAN BUFFERS\n");
328 dumpbufs(kd, vn.v_rbclean_tree.rbh_root, "ROOT");
330 if (vn.v_rbdirty_tree.rbh_root) {
331 printf("\tDIRTY BUFFERS\n");
332 dumpbufs(kd, vn.v_rbdirty_tree.rbh_root, "ROOT");
337 if (vn.v_tag == VT_UFS && vn.v_data) {
338 struct inode *ip = vn.v_data;
341 kkread(kd, (u_long)&ip->i_lockf, &lockf, sizeof(lockf));
342 dumplocks(kd, &lockf);
346 if (fsprivate && vfc_name) {
348 * Actually find whether the filesystem can dump
349 * detailed inode information out of the vnode
351 const struct dump_private_data *dpd;
353 for (dpd = dumplist; dpd->dumpfn != NULL; dpd++) {
354 if ((strcmp(dpd->vfc_name, vfc_name) == 0) &&
356 dpd->dumpfn(kd, vn.v_data);
361 return(vn.v_nmntvnodes.tqe_next);
363 return(vn.v_list.tqe_next);
367 dumpbufs(kvm_t *kd, void *bufp, const char *id)
371 kkread(kd, (u_long)bufp, &buf, sizeof(buf));
372 printf("\t %-8s %p loffset %012lx/%05x foffset %08lx",
374 buf.b_bio1.bio_offset,
376 buf.b_bio2.bio_offset);
377 printf(" q=%d count=%08x flags=%08x refs=%08x dep=%p",
378 buf.b_qindex, buf.b_lock.lk_count,
379 buf.b_flags, buf.b_refs, buf.b_dep.lh_first);
382 if (buf.b_rbnode.rbe_left)
383 dumpbufs(kd, buf.b_rbnode.rbe_left, "LEFT");
384 if (buf.b_rbnode.rbe_right)
385 dumpbufs(kd, buf.b_rbnode.rbe_right, "RIGHT");
389 dumplocks(kvm_t *kd, struct lockf *lockf)
391 struct lockf_range item;
392 struct lockf_range *scan;
394 if ((scan = TAILQ_FIRST(&lockf->lf_range)) != NULL) {
397 kkread(kd, (u_long)scan, &item, sizeof(item));
398 dumplockinfo(kd, &item);
399 } while ((scan = TAILQ_NEXT(&item, lf_link)) != NULL);
402 if ((scan = TAILQ_FIRST(&lockf->lf_blocked)) != NULL) {
405 kkread(kd, (u_long)scan, &item, sizeof(item));
406 dumplockinfo(kd, &item);
407 } while ((scan = TAILQ_NEXT(&item, lf_link)) != NULL);
414 dumplockinfo(kvm_t *kd, struct lockf_range *item)
418 if (item->lf_owner && (item->lf_flags & F_POSIX)) {
419 kkread(kd, (u_long)&item->lf_owner->p_pid,
420 &ownerpid, sizeof(ownerpid));
425 printf("\t ty=%d flgs=%04x %ld-%ld owner=%d\n",
426 item->lf_type, item->lf_flags,
427 item->lf_start, item->lf_end,
434 getobjpages(kvm_t *kd, struct vm_object *obj)
436 struct vm_object vmobj;
438 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
439 return(vmobj.resident_page_count);
444 getobjvnpsize(kvm_t *kd, struct vm_object *obj)
446 struct vm_object vmobj;
448 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
449 return ((int)vmobj.size);
453 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
455 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {