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>
64 #include <vfs/dirfs/dirfs.h>
76 { "_vnode_inactive_list" },
77 { "_vnode_active_list" },
81 static void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes);
82 static struct mount *dumpmount(kvm_t *kd, struct mount *mp);
83 static struct vnode *dumpvp(kvm_t *kd, struct vnode *vp, int whichlist, char *vfc_name);
84 static void dump_dirfs_node(kvm_t *kd, void *arg);
85 static void dumpbufs(kvm_t *kd, void *bufp, const char *id);
86 static void dumplocks(kvm_t *kd, struct lockf *lockf);
87 static void dumplockinfo(kvm_t *kd, struct lockf_range *item);
88 static int getobjpages(kvm_t *kd, struct vm_object *obj);
89 static int getobjvnpsize(kvm_t *kd, struct vm_object *obj);
91 static const struct dump_private_data {
92 char vfc_name[MFSNAMELEN];
93 void (*dumpfn)(kvm_t *, void *);
95 { "dirfs", dump_dirfs_node },
105 main(int ac, char **av)
112 const char *corefile = NULL;
113 const char *sysfile = NULL;
115 while ((ch = getopt(ac, av, "alnbM:N:p")) != -1) {
142 fprintf(stderr, "%s [-pbnla] [-M core] [-N system]\n", av[0]);
147 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
151 if (kvm_nlist(kd, Nl) != 0) {
155 kkread(kd, Nl[0].n_value, &mp, sizeof(mp));
157 mp = dumpmount(kd, mp);
158 printf("INACTIVELIST {\n");
159 kkread(kd, Nl[1].n_value, &vp, sizeof(vp));
161 vp = dumpvp(kd, vp, 0, NULL);
163 printf("ACTIVELIST {\n");
164 kkread(kd, Nl[2].n_value, &vp, sizeof(vp));
166 vp = dumpvp(kd, vp, 0, NULL);
171 static struct mount *
172 dumpmount(kvm_t *kd, struct mount *mp)
178 kkread(kd, (u_long)mp, &mnt, sizeof(mnt));
179 printf("MOUNTPOINT %s on %s {\n",
180 mnt.mnt_stat.f_mntfromname, mnt.mnt_stat.f_mntonname);
181 printf(" lk_flags %08x count %08x holder = %p\n",
182 mnt.mnt_lock.lk_flags, mnt.mnt_lock.lk_count,
183 mnt.mnt_lock.lk_lockholder);
184 printf(" mnt_flag %08x mnt_kern_flag %08x\n",
185 mnt.mnt_flag, mnt.mnt_kern_flag);
186 printf(" mnt_nvnodelistsize %d\n", mnt.mnt_nvnodelistsize);
187 printf(" mnt_stat.f_fsid %08x %08x\n", mnt.mnt_stat.f_fsid.val[0],
188 mnt.mnt_stat.f_fsid.val[1]);
190 /* Dump fs private node data */
191 kkread(kd, (u_long)mnt.mnt_vfc, &vfc, sizeof(vfc));
192 vp = mnt.mnt_nvnodelist.tqh_first;
194 vp = dumpvp(kd, vp, 1, vfc.vfc_name);
198 return(mnt.mnt_list.tqe_next);
202 vtype(enum vtype type)
228 snprintf(buf, sizeof(buf), "%d", (int)type);
233 void dump_dirfs_node(kvm_t *kd, void *arg)
235 dirfs_node_t dnp = (dirfs_node_t)arg;
236 struct dirfs_node dn;
238 char strfd[16] = {0};
240 /* No garbage allowed */
241 bzero(&dn, sizeof(dn));
244 * Attempt to read in the address of the dnp and also
245 * its name if there is any.
247 kkread(kd, (u_long)dnp, &dn, sizeof(dn));
248 if (dn.dn_name != NULL) {
250 dn.dn_name = calloc(1, MAXPATHLEN);
251 kkread(kd, (u_long)name, dn.dn_name, dn.dn_namelen);
254 printf("\t\tdn_name=%s mode=%u flags=%08x refs=%d ",
255 (dn.dn_name ? dn.dn_name : "NULL"), dn.dn_mode, dn.dn_flags,
259 if (dn.dn_state & DIRFS_ROOT)
260 printf("DIRFS_ROOT ");
263 sprintf(strfd, "%s", "NOFD");
265 sprintf(strfd, "%d", dn.dn_fd);
267 printf("\n\t\tuid=%u gid=%u objtype=%s nlinks=%d dn_fd=%s\n", dn.dn_uid,
268 dn.dn_gid, vtype(dn.dn_type), dn.dn_links, strfd);
269 printf("\t\tsize=%jd ctime=%ju atime=%ju mtime=%ju\n\n", dn.dn_size,
270 dn.dn_ctime, dn.dn_atime, dn.dn_mtime);
276 static struct vnode *
277 dumpvp(kvm_t *kd, struct vnode *vp, int whichlist, char *vfc_name)
281 kkread(kd, (u_long)vp, &vn, sizeof(vn));
283 printf(" vnode %p.%d refcnt %08x auxcnt %d type=%s flags %08x",
284 vp, vn.v_state, vn.v_refcnt, vn.v_auxrefs, vtype(vn.v_type), vn.v_flag);
286 if ((vn.v_flag & VOBJBUF) && vn.v_object) {
287 int npages = getobjpages(kd, vn.v_object);
288 int vnpsize = getobjvnpsize(kd, vn.v_object);
289 if (npages || vnpsize)
290 printf(" vmobjpgs=%d vnpsize=%d", npages, vnpsize);
293 if (vn.v_flag & VROOT)
295 if (vn.v_flag & VTEXT)
297 if (vn.v_flag & VSYSTEM)
299 if (vn.v_flag & VISTTY)
302 if (vn.v_flag & VXLOCK)
304 if (vn.v_flag & VXWANT)
308 if (vn.v_flag & VRECLAIMED)
309 printf(" VRECLAIMED");
310 if (vn.v_flag & VINACTIVE)
311 printf(" VINACTIVE");
313 if (vn.v_flag & VOBJBUF)
316 if (vn.v_flag & VSWAPCACHE)
317 printf(" VSWAPCACHE");
319 switch(vn.v_flag & (VAGE0 | VAGE1)) {
334 if (vn.v_flag & VDOOMED)
338 if (vn.v_flag & VINFREE)
341 if (vn.v_flag & VONWORKLST)
342 printf(" VONWORKLST");
343 if (vn.v_flag & VOBJDIRTY)
344 printf(" VOBJDIRTY");
345 if (vn.v_flag & VMAYHAVELOCKS)
346 printf(" VMAYHAVELOCKS");
350 if (vn.v_lock.lk_count || vn.v_lock.lk_lockholder != LK_NOTHREAD) {
351 printf("\tlk_flags %08x count %08x holder = %p\n",
352 vn.v_lock.lk_flags, vn.v_lock.lk_count,
353 vn.v_lock.lk_lockholder);
356 if (withnames && TAILQ_FIRST(&vn.v_namecache)) {
357 struct namecache ncp;
361 kkread(kd, (u_long)TAILQ_FIRST(&vn.v_namecache), &ncp, sizeof(ncp));
362 if ((nlen = ncp.nc_nlen) >= sizeof(buf))
363 nlen = sizeof(buf) - 1;
367 kkread(kd, (u_long)ncp.nc_name, buf, nlen);
369 printf("\tfilename %s\n", buf);
374 if (vn.v_rbclean_tree.rbh_root) {
375 printf("\tCLEAN BUFFERS\n");
376 dumpbufs(kd, vn.v_rbclean_tree.rbh_root, "ROOT");
378 if (vn.v_rbdirty_tree.rbh_root) {
379 printf("\tDIRTY BUFFERS\n");
380 dumpbufs(kd, vn.v_rbdirty_tree.rbh_root, "ROOT");
385 if (vn.v_tag == VT_UFS && vn.v_data) {
386 struct inode *ip = vn.v_data;
389 kkread(kd, (u_long)&ip->i_lockf, &lockf, sizeof(lockf));
390 dumplocks(kd, &lockf);
394 if (fsprivate && vfc_name) {
396 * Actually find whether the filesystem can dump
397 * detailed inode information out of the vnode
399 const struct dump_private_data *dpd;
401 for (dpd = dumplist; dpd->dumpfn != NULL; dpd++) {
402 if ((strcmp(dpd->vfc_name, vfc_name) == 0) &&
404 dpd->dumpfn(kd, vn.v_data);
409 return(vn.v_nmntvnodes.tqe_next);
411 return(vn.v_list.tqe_next);
415 dumpbufs(kvm_t *kd, void *bufp, const char *id)
419 kkread(kd, (u_long)bufp, &buf, sizeof(buf));
420 printf("\t %-8s %p loffset %012llx/%05x foffset %08llx",
422 buf.b_bio1.bio_offset,
424 buf.b_bio2.bio_offset);
425 printf(" q=%d count=%08x flags=%08x refs=%08x dep=%p",
426 buf.b_qindex, buf.b_lock.lk_count,
427 buf.b_flags, buf.b_refs, buf.b_dep.lh_first);
430 if (buf.b_rbnode.rbe_left)
431 dumpbufs(kd, buf.b_rbnode.rbe_left, "LEFT");
432 if (buf.b_rbnode.rbe_right)
433 dumpbufs(kd, buf.b_rbnode.rbe_right, "RIGHT");
437 dumplocks(kvm_t *kd, struct lockf *lockf)
439 struct lockf_range item;
440 struct lockf_range *scan;
442 if ((scan = TAILQ_FIRST(&lockf->lf_range)) != NULL) {
445 kkread(kd, (u_long)scan, &item, sizeof(item));
446 dumplockinfo(kd, &item);
447 } while ((scan = TAILQ_NEXT(&item, lf_link)) != NULL);
450 if ((scan = TAILQ_FIRST(&lockf->lf_blocked)) != NULL) {
453 kkread(kd, (u_long)scan, &item, sizeof(item));
454 dumplockinfo(kd, &item);
455 } while ((scan = TAILQ_NEXT(&item, lf_link)) != NULL);
462 dumplockinfo(kvm_t *kd, struct lockf_range *item)
466 if (item->lf_owner && (item->lf_flags & F_POSIX)) {
467 kkread(kd, (u_long)&item->lf_owner->p_pid,
468 &ownerpid, sizeof(ownerpid));
473 printf("\t ty=%d flgs=%04x %lld-%lld owner=%d\n",
474 item->lf_type, item->lf_flags,
475 item->lf_start, item->lf_end,
482 getobjpages(kvm_t *kd, struct vm_object *obj)
484 struct vm_object vmobj;
486 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
487 return(vmobj.resident_page_count);
492 getobjvnpsize(kvm_t *kd, struct vm_object *obj)
494 struct vm_object vmobj;
496 kkread(kd, (u_long)obj, &vmobj, sizeof(vmobj));
497 return ((int)vmobj.size);
501 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
503 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {