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 1.13 2007/05/06 20:45:01 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>
63 #include <vfs/ufs/quota.h>
64 #include <vfs/ufs/inode.h>
76 { "_vnode_free_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);
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);
94 main(int ac, char **av)
101 const char *corefile = NULL;
102 const char *sysfile = NULL;
104 while ((ch = getopt(ac, av, "alnbM:N:")) != -1) {
127 fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
132 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
136 if (kvm_nlist(kd, Nl) != 0) {
140 kkread(kd, Nl[0].n_value, &mp, sizeof(mp));
142 mp = dumpmount(kd, mp);
143 kkread(kd, Nl[1].n_value, &vp, sizeof(vp));
144 printf("VNODEFREELIST {\n");
146 vp = dumpvp(kd, vp, 0);
151 static struct mount *
152 dumpmount(kvm_t *kd, struct mount *mp)
157 kkread(kd, (u_long)mp, &mnt, sizeof(mnt));
158 printf("MOUNTPOINT %s on %s {\n",
159 mnt.mnt_stat.f_mntfromname, mnt.mnt_stat.f_mntonname);
160 printf(" lk_flags %08x share %d wait %d excl %d holder = %p\n",
161 mnt.mnt_lock.lk_flags, mnt.mnt_lock.lk_sharecount,
162 mnt.mnt_lock.lk_waitcount, mnt.mnt_lock.lk_exclusivecount,
163 mnt.mnt_lock.lk_lockholder);
164 printf(" mnt_flag %08x mnt_kern_flag %08x\n",
165 mnt.mnt_flag, mnt.mnt_kern_flag);
166 printf(" mnt_nvnodelistsize %d\n", mnt.mnt_nvnodelistsize);
167 printf(" mnt_stat.f_fsid %08x %08x\n", mnt.mnt_stat.f_fsid.val[0],
168 mnt.mnt_stat.f_fsid.val[1]);
169 vp = mnt.mnt_nvnodelist.tqh_first;
171 vp = dumpvp(kd, vp, 1);
175 return(mnt.mnt_list.tqe_next);
179 vtype(enum vtype type)
205 snprintf(buf, sizeof(buf), "%d", (int)type);
209 static struct vnode *
210 dumpvp(kvm_t *kd, struct vnode *vp, int whichlist)
214 kkread(kd, (u_long)vp, &vn, sizeof(vn));
216 printf(" vnode %p usecnt %08x holdcnt %d type=%s flags %08x",
217 vp, vn.v_sysref.refcnt, vn.v_auxrefs, vtype(vn.v_type), vn.v_flag);
219 if ((vn.v_flag & VOBJBUF) && vn.v_object) {
220 int npages = getobjpages(kd, vn.v_object);
221 int vnpsize = getobjvnpsize(kd, vn.v_object);
222 if (npages || vnpsize)
223 printf(" vmobjpgs=%d vnpsize=%d", npages, vnpsize);
226 if (vn.v_flag & VROOT)
228 if (vn.v_flag & VTEXT)
230 if (vn.v_flag & VSYSTEM)
232 if (vn.v_flag & VISTTY)
235 if (vn.v_flag & VXLOCK)
237 if (vn.v_flag & VXWANT)
241 if (vn.v_flag & VRECLAIMED)
242 printf(" VRECLAIMED");
243 if (vn.v_flag & VINACTIVE)
244 printf(" VINACTIVE");
246 if (vn.v_flag & VOBJBUF)
248 if (vn.v_flag & VAGE)
250 if (vn.v_flag & VOLOCK)
252 if (vn.v_flag & VOWANT)
255 if (vn.v_flag & VDOOMED)
258 if (vn.v_flag & VFREE)
260 if (vn.v_flag & VCACHED)
263 if (vn.v_flag & VINFREE)
266 if (vn.v_flag & VONWORKLST)
267 printf(" VONWORKLST");
268 if (vn.v_flag & VMOUNT)
270 if (vn.v_flag & VOBJDIRTY)
271 printf(" VOBJDIRTY");
272 if (vn.v_flag & VMAYHAVELOCKS)
273 printf(" VMAYHAVELOCKS");
277 if (vn.v_lock.lk_sharecount || vn.v_lock.lk_waitcount ||
278 vn.v_lock.lk_exclusivecount || vn.v_lock.lk_lockholder != LK_NOTHREAD) {
279 printf("\tlk_flags %08x share %d wait %d excl %d holder = %p\n",
280 vn.v_lock.lk_flags, vn.v_lock.lk_sharecount,
281 vn.v_lock.lk_waitcount, vn.v_lock.lk_exclusivecount,
282 vn.v_lock.lk_lockholder);
285 if (withnames && TAILQ_FIRST(&vn.v_namecache)) {
286 struct namecache ncp;
290 kkread(kd, (u_long)TAILQ_FIRST(&vn.v_namecache), &ncp, sizeof(ncp));
291 if ((nlen = ncp.nc_nlen) >= sizeof(buf))
292 nlen = sizeof(buf) - 1;
296 kkread(kd, (u_long)ncp.nc_name, buf, nlen);
298 printf("\tfilename %s\n", buf);
303 if (vn.v_rbclean_tree.rbh_root) {
304 printf("\tCLEAN BUFFERS\n");
305 dumpbufs(kd, vn.v_rbclean_tree.rbh_root, "ROOT");
307 if (vn.v_rbdirty_tree.rbh_root) {
308 printf("\tDIRTY BUFFERS\n");
309 dumpbufs(kd, vn.v_rbdirty_tree.rbh_root, "ROOT");
314 if (vn.v_tag == VT_UFS && vn.v_data) {
315 struct inode *ip = vn.v_data;
318 kkread(kd, (u_long)&ip->i_lockf, &lockf, sizeof(lockf));
319 dumplocks(kd, &lockf);
325 return(vn.v_nmntvnodes.tqe_next);
327 return(vn.v_freelist.tqe_next);
331 dumpbufs(kvm_t *kd, void *bufp, const char *id)
335 kkread(kd, (u_long)bufp, &buf, sizeof(buf));
336 printf("\t %-8s %p loffset %012llx foffset %08llx",
338 buf.b_bio1.bio_offset,
339 buf.b_bio2.bio_offset);
340 printf(" q=%d lck=%d/%d flags=%08x dep=%p",
341 buf.b_qindex, buf.b_lock.lk_sharecount,
342 buf.b_lock.lk_exclusivecount,
343 buf.b_flags, buf.b_dep.lh_first);
346 if (buf.b_rbnode.rbe_left)
347 dumpbufs(kd, buf.b_rbnode.rbe_left, "LEFT");
348 if (buf.b_rbnode.rbe_right)
349 dumpbufs(kd, buf.b_rbnode.rbe_right, "RIGHT");
353 dumplocks(kvm_t *kd, struct lockf *lockf)
355 struct lockf_range item;
356 struct lockf_range *scan;
358 if ((scan = TAILQ_FIRST(&lockf->lf_range)) != NULL) {
361 kkread(kd, (u_long)scan, &item, sizeof(item));
362 dumplockinfo(kd, &item);
363 } while ((scan = TAILQ_NEXT(&item, lf_link)) != NULL);
366 if ((scan = TAILQ_FIRST(&lockf->lf_blocked)) != NULL) {
369 kkread(kd, (u_long)scan, &item, sizeof(item));
370 dumplockinfo(kd, &item);
371 } while ((scan = TAILQ_NEXT(&item, lf_link)) != NULL);
378 dumplockinfo(kvm_t *kd, struct lockf_range *item)
382 if (item->lf_owner && (item->lf_flags & F_POSIX)) {
383 kkread(kd, (u_long)&item->lf_owner->p_pid,
384 &ownerpid, sizeof(ownerpid));
389 printf("\t ty=%d flgs=%04x %lld-%lld owner=%d\n",
390 item->lf_type, item->lf_flags,
391 item->lf_start, item->lf_end,
398 getobjpages(kvm_t *kd, struct vm_object *obj)
400 struct vm_object vmobj;
402 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
403 return(vmobj.resident_page_count);
408 getobjvnpsize(kvm_t *kd, struct vm_object *obj)
410 struct vm_object vmobj;
412 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
413 return ((int)vmobj.size);
417 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
419 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {