2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)fstat.c 8.3 (Berkeley) 5/2/95
31 * $FreeBSD: src/usr.bin/fstat/fstat.c,v 1.21.2.7 2001/11/21 10:49:37 dwmalone Exp $
35 #include <sys/param.h>
38 #include <sys/vnode.h>
39 #include <sys/socket.h>
40 #include <sys/socketvar.h>
41 #include <sys/domain.h>
42 #include <sys/protosw.h>
44 #include <sys/unpcb.h>
45 #include <sys/sysctl.h>
46 #include <sys/filedesc.h>
47 #include <sys/queue.h>
51 #include <sys/ktrace.h>
52 #include <vfs/ufs/quota.h>
53 #include <vfs/ufs/inode.h>
54 #include <sys/mount.h>
55 #include <sys/namecache.h>
56 #include <nfs/nfsproto.h>
57 #include <nfs/rpcv2.h>
59 #include <nfs/nfsnode.h>
60 #include <sys/devfs.h>
63 #include <vm/vm_map.h>
64 #include <vm/vm_object.h>
66 #include <net/route.h>
67 #include <netinet/in.h>
68 #include <netinet/in_systm.h>
69 #include <netinet/ip.h>
70 #include <netinet/in_pcb.h>
96 static void make_printable(char *buf, int len);
104 int fsflg, /* show files on same filesystem as file(s) argument */
105 pflg, /* show files open by a particular pid */
106 uflg; /* show files open by a particular (effective) user */
107 int checkfile; /* true if restricting to particular files or filesystems */
108 int nflg; /* (numerical) display f.s. and rdev as dev_t */
109 int vflg; /* display errors in locating kernel data objects etc... */
110 int mflg; /* include memory-mapped files */
120 struct fdnode *ofiles; /* buffer of pointers to file structures */
123 #define ALLOC_OFILES(d) \
124 if ((d) > maxfiles) { \
126 ofiles = malloc((d) * sizeof(struct fdnode)); \
127 if (ofiles == NULL) { \
135 static void dofiles(struct kinfo_proc *, struct proc *);
136 static void dommap(struct proc *);
137 static void vtrans(struct vnode *, struct nchandle *, int, int, off_t);
138 static int ufs_filestat(struct vnode *, struct filestat *);
139 static int nfs_filestat(struct vnode *, struct filestat *);
140 static int devfs_filestat(struct vnode *, struct filestat *);
141 static char *getmnton(struct mount *, struct namecache_list *, struct nchandle *);
142 static void pipetrans(struct pipe *, int, int);
143 static void socktrans(struct socket *, int);
144 static void getinetproto(int);
145 static int getfname(const char *);
146 static void usage(void) __dead2;
150 main(int argc, char **argv)
152 struct passwd *passwd;
153 struct kinfo_proc *p, *plast;
157 char buf[_POSIX2_LINE_MAX];
161 what = KERN_PROC_ALL;
162 nlistf = memf = NULL;
163 while ((ch = getopt(argc, argv, "fmnp:u:vwN:M:")) != -1)
183 if (!isdigit(*optarg)) {
184 warnx("-p requires a process id");
187 what = KERN_PROC_PID;
193 if (!(passwd = getpwnam(optarg)))
194 errx(1, "%s: unknown uid", optarg);
195 what = KERN_PROC_UID;
196 arg = passwd->pw_uid;
210 if (*(argv += optind)) {
211 for (; *argv; ++argv) {
215 if (!checkfile) /* file(s) specified, but none accessable */
219 ALLOC_OFILES(256); /* reserve space for file pointers */
221 if (fsflg && !checkfile) {
222 /* -f with no files means use wd */
223 if (getfname(".") == 0)
229 * Discard setgid privileges if not the running kernel so that bad
230 * guys can't print interesting stuff from kernel memory.
232 if (nlistf != NULL || memf != NULL)
235 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL)
238 if (kvm_nlist(kd, nl) != 0)
239 errx(1, "no namelist: %s", kvm_geterr(kd));
241 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL)
242 errx(1, "%s", kvm_geterr(kd));
244 printf("USER %-*.*s %*.*s FD DEV %*.*s MODE SZ|DV R/W",
245 wflg_cmd, wflg_cmd, "CMD",
246 pid_width, pid_width, "PID",
247 ino_width, ino_width, "INUM");
249 printf("USER %-*.*s %*.*s FD %-*.*s %*.*s MODE SZ|DV R/W",
250 wflg_cmd, wflg_cmd, "CMD",
251 pid_width, pid_width, "PID",
252 wflg_mnt, wflg_mnt, "PATH",
253 ino_width, ino_width, "INUM");
254 if (checkfile && fsflg == 0)
259 for (plast = &p[cnt]; p < plast; ++p) {
260 if (p->kp_stat == SZOMB)
262 if (!kread((void *)p->kp_paddr, &proc, sizeof(proc))) {
263 dprintf(stderr, "can't read proc at %p for pid %d\n",
264 (void *)p->kp_paddr, Pid);
275 printf("%-8.8s %-*s %*d", Uname, wflg_cmd, Comm, pid_width, Pid); \
298 * print open files attributed to this process
301 dofiles(struct kinfo_proc *kp, struct proc *p)
305 struct filedesc filed;
306 struct ktrace_node ktrace_node;
308 Uname = user_from_uid(kp->kp_uid, 0);
311 make_printable(Comm, strlen(Comm));
315 if (!kread(p->p_fd, &filed, sizeof (filed))) {
316 dprintf(stderr, "can't read filedesc at %p for pid %d\n",
317 (void *)p->p_fd, Pid);
321 * root directory vnode, if one
324 vtrans(filed.fd_rdir, &filed.fd_nrdir, RDIR, FREAD, 0);
326 * current working directory vnode
328 vtrans(filed.fd_cdir, &filed.fd_ncdir, CDIR, FREAD, 0);
330 * ktrace vnode, if one
332 if (p->p_tracenode) {
333 if (kread(p->p_tracenode, &ktrace_node, sizeof (ktrace_node)))
334 vtrans(ktrace_node.kn_vp, NULL, TRACE, FREAD|FWRITE, 0);
340 vtrans(p->p_textvp, NULL, TEXT, FREAD, 0);
344 ALLOC_OFILES(filed.fd_lastfile+1);
345 if (!kread(filed.fd_files, ofiles,
346 (filed.fd_lastfile+1) * sizeof(struct fdnode))) {
348 "can't read file structures at %p for pid %d\n",
349 (void *)filed.fd_files, Pid);
352 for (i = 0; i <= filed.fd_lastfile; i++) {
353 if (ofiles[i].fp == NULL)
355 if (!kread(ofiles[i].fp, &file, sizeof (struct file))) {
356 dprintf(stderr, "can't read file %d at %p for pid %d\n",
357 i, (void *)ofiles[i].fp, Pid);
360 if (file.f_type == DTYPE_VNODE) {
361 vtrans((struct vnode *)file.f_data, &file.f_nchandle,
362 i, file.f_flag, file.f_offset);
363 } else if (file.f_type == DTYPE_SOCKET) {
365 socktrans((struct socket *)file.f_data, i);
368 else if (file.f_type == DTYPE_PIPE) {
370 pipetrans((struct pipe *)file.f_data, i,
375 else if (file.f_type == DTYPE_FIFO) {
377 vtrans((struct vnode *)file.f_data,
379 i, file.f_flag, file.f_offset);
384 "unknown file type %d for file %d of pid %d\n",
385 file.f_type, i, Pid);
391 dommap(struct proc *p)
393 struct vmspace vmspace;
395 struct vm_map_entry entry;
397 struct vm_object object;
398 struct vm_map_backing ba;
402 if (!kread(p->p_vmspace, &vmspace, sizeof(vmspace))) {
403 dprintf(stderr, "can't read vmspace at %p for pid %d\n",
404 (void *)p->p_vmspace, Pid);
408 map = &vmspace.vm_map;
409 for (ken = kvm_vm_map_entry_first(kd, map, &entry);
410 ken; ken = kvm_vm_map_entry_next(kd, ken, &entry)) {
411 if (entry.maptype == VM_MAPTYPE_SUBMAP)
414 if (entry.ba.object == NULL)
418 if ((objp = entry.ba.object) != NULL) {
419 if (!kread(objp, &object, sizeof(object))) {
421 "can't read vm_object at %p "
427 if (ba.backing_ba == NULL)
429 if (!kread(ba.backing_ba, &ba, sizeof(ba))) {
431 "can't read map_backing at %p "
433 (void *)ba.backing_ba, Pid);
438 prot = entry.protection;
439 fflags = (prot & VM_PROT_READ ? FREAD : 0) |
440 (prot & VM_PROT_WRITE ? FWRITE : 0);
442 switch (object.type) {
444 vtrans((struct vnode *)object.handle, NULL,
454 vtrans(struct vnode *vp, struct nchandle *ncr, int i, int flag, off_t off)
458 char rw[3], mode[15];
459 const char *badtype = NULL, *filename;
463 filename = badtype = NULL;
464 if (!kread(vp, &vn, sizeof (struct vnode))) {
465 dprintf(stderr, "can't read vnode at %p for pid %d\n",
469 if (vn.v_type == VNON || vn.v_tag == VT_NON)
471 else if (vn.v_type == VBAD)
476 if (!hammer_filestat(&vn, &fst))
480 if (!hammer2_filestat(&vn, &fst))
484 if (!tmpfs_filestat(&vn, &fst))
488 if (!ufs_filestat(&vn, &fst))
492 if (!ufs_filestat(&vn, &fst))
496 if (!nfs_filestat(&vn, &fst))
500 if (!ntfs_filestat(&vn, &fst))
504 if (!ext2fs_filestat(&vn, &fst))
509 if (!msdosfs_filestat(&vn, &fst))
514 if (!isofs_filestat(&vn, &fst))
519 if (!devfs_filestat(&vn, &fst))
524 static char unknown[10];
525 sprintf(unknown, "?(%x)", vn.v_tag);
536 for (d = devs; d != NULL; d = d->next)
537 if (d->fsid == fst.fsid) {
539 if (d->ino == (ino_t)fst.fileid) {
544 if (fsmatch == 0 || (filename == NULL && fsflg == 0))
549 (void)printf(" %-*s %10s %jd\n",
551 getmnton(vn.v_mount, &vn.v_namecache, ncr),
558 major(fst.fsid), minor(fst.fsid));
561 wflg_mnt, getmnton(vn.v_mount, &vn.v_namecache, ncr));
563 sprintf(mode, "%o", fst.mode);
565 strmode(fst.mode, mode);
567 printf(" %*ld %10s", ino_width, fst.fileid, mode);
572 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ?
573 S_IFCHR : S_IFBLK)) == NULL))
574 printf(" %3u,%-4u", major(fst.rdev), minor(fst.rdev));
576 printf(" %8s", name);
579 printf(" %jd", (intmax_t)fst.offset);
582 printf(" %8ju", (uintmax_t)fst.size);
590 if (filename && !fsflg)
591 printf(" %s", filename);
596 ufs_filestat(struct vnode *vp, struct filestat *fsp)
600 if (!kread(VTOI(vp), &inode, sizeof (inode))) {
601 dprintf(stderr, "can't read inode at %p for pid %d\n",
602 (void *)VTOI(vp), Pid);
606 * The st_dev from stat(2) is a udev_t. These kernel structures
607 * contain dev_t structures. We need to convert to udev to make
610 fsp->fsid = fstat_dev2udev(inode.i_dev);
611 fsp->fileid = (long)inode.i_number;
612 fsp->mode = (mode_t)inode.i_mode;
613 fsp->size = inode.i_size;
614 fsp->rdev = inode.i_rdev;
620 nfs_filestat(struct vnode *vp, struct filestat *fsp)
622 struct nfsnode nfsnode;
624 if (!kread(VTONFS(vp), &nfsnode, sizeof (nfsnode))) {
625 dprintf(stderr, "can't read nfsnode at %p for pid %d\n",
626 (void *)VTONFS(vp), Pid);
629 fsp->fsid = nfsnode.n_vattr.va_fsid;
630 fsp->fileid = nfsnode.n_vattr.va_fileid;
631 fsp->size = nfsnode.n_size;
632 fsp->rdev = makeudev(nfsnode.n_vattr.va_rmajor,
633 nfsnode.n_vattr.va_rminor);
634 fsp->mode = nfsnode.n_vattr.va_mode | mtrans(vp->v_type);
640 devfs_filestat(struct vnode *vp, struct filestat *fsp)
642 struct devfs_node devfs_node;
644 if (!kread(vp->v_data, &devfs_node, sizeof (devfs_node))) {
645 dprintf(stderr, "can't read devfs_node at %p for pid %d\n",
646 (void *)vp->v_data, Pid);
649 fsp->fsid = fsp->rdev = fstat_dev2udev(vp->v_rdev);
650 fsp->fileid = devfs_node.d_dir.d_ino;
651 fsp->mode = (devfs_node.mode & ~S_IFMT) | S_IFCHR;
658 getmnton(struct mount *m, struct namecache_list *ncplist, struct nchandle *ncr)
660 static struct mount mount_l;
664 char mntonname[MNAMELEN];
667 struct namecache *ncp;
668 struct namecache ncp_copy;
669 static char path[1024];
673 * If no ncp is passed try to find one via ncplist. Make sure
674 * we are using the correct mount pointer or the matching code
675 * will not know how to transition mount points properly.
677 if (ncr == NULL || ncr->ncp == NULL) {
678 ncp = ncplist->tqh_first;
686 * If we have an ncp, traceback the path. This is a kvm pointer.
689 if (!kread(m, &mount_l, sizeof(struct mount))) {
690 warnx("can't read mount table at %p", (void *)m);
693 i = sizeof(path) - 1;
697 * If this is the root of the mount then traverse
698 * to the parent mount.
700 if (ncp == mount_l.mnt_ncmountpt.ncp) {
701 ncp = mount_l.mnt_ncmounton.ncp;
704 m = mount_l.mnt_ncmounton.mount;
705 if (!kread(m, &mount_l, sizeof(struct mount))) {
706 warnx("can't read mount table at %p", (void *)m);
712 * Ok, pull out the ncp and extract the name
714 if (!kread(ncp, &ncp_copy, sizeof(ncp_copy))) {
715 warnx("can't read ncp at %p", ncp);
718 if (i <= ncp_copy.nc_nlen)
720 i -= ncp_copy.nc_nlen;
721 if (!kread(ncp_copy.nc_name, path + i, ncp_copy.nc_nlen)) {
722 warnx("can't read ncp %p path component at %p", ncp, ncp_copy.nc_name);
725 make_printable(path + i, ncp_copy.nc_nlen);
727 ncp = ncp_copy.nc_parent;
729 if (i == sizeof(path) - 1)
735 * If all else fails print out the mount point path
737 for (mt = mhead; mt != NULL; mt = mt->next) {
739 return (mt->mntonname);
741 if (!kread(m, &mount_l, sizeof(struct mount))) {
742 warnx("can't read mount table at %p", (void *)m);
745 if ((mt = malloc(sizeof (struct mtab))) == NULL)
748 bcopy(&mount_l.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN);
751 return (mt->mntonname);
755 pipetrans(struct pipe *pi, int i, int flag)
765 if ((intptr_t)pi & 1) {
776 pi = (void *)((intptr_t)pi & ~(intptr_t)1);
779 if (!kread(pi, &pip, sizeof(struct pipe))) {
780 dprintf(stderr, "can't read pipe at %p\n", (void *)pi);
784 printf("* pipe %8lx (%c<->%c)", (u_long)pi, side1, side2);
785 printf(" ravail %-zd wavail %-zd",
786 b1->windex - b1->rindex,
787 b2->windex - b2->rindex);
802 socktrans(struct socket *sock, int i)
804 static const char *stypename[] = {
814 struct protosw proto;
824 if (!kread(sock, &so, sizeof(struct socket))) {
825 dprintf(stderr, "can't read sock at %p\n", (void *)sock);
829 /* fill in protosw entry */
830 if (!kread(so.so_proto, &proto, sizeof(struct protosw))) {
831 dprintf(stderr, "can't read protosw at %p",
832 (void *)so.so_proto);
837 if (!kread(proto.pr_domain, &dom, sizeof(struct domain))) {
838 dprintf(stderr, "can't read domain at %p\n",
839 (const void *)proto.pr_domain);
843 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname,
844 sizeof(dname) - 1)) < 0) {
845 dprintf(stderr, "can't read domain name at %p\n",
846 (void *)dom.dom_name);
852 if ((u_short)so.so_type > STYPEMAX)
853 printf("* %s ?%d", dname, so.so_type);
855 printf("* %s %s", dname, stypename[so.so_type]);
858 * protocol specific formatting
860 * Try to find interesting things to print. For tcp, the interesting
861 * thing is the address of the tcpcb, for udp and others, just the
862 * inpcb (socket pcb). For unix domain, its the address of the socket
863 * pcb and the address of the connected pcb (if connected). Otherwise
864 * just print the protocol number and address of the socket itself.
865 * The idea is not to duplicate netstat, but to make available enough
866 * information for further analysis.
868 switch(dom.dom_family) {
871 getinetproto(proto.pr_protocol);
872 if (proto.pr_protocol == IPPROTO_TCP ) {
874 if (kvm_read(kd, (u_long)so.so_pcb,
875 (char *)&inpcb, sizeof(struct inpcb))
876 != sizeof(struct inpcb)) {
878 "can't read inpcb at %p\n",
882 printf(" %lx", (u_long)inpcb.inp_ppcb);
886 printf(" %lx", (u_long)so.so_pcb);
889 /* print address of pcb and connected pcb */
891 printf(" %lx", (u_long)so.so_pcb);
892 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb,
893 sizeof(struct unpcb)) != sizeof(struct unpcb)){
894 dprintf(stderr, "can't read unpcb at %p\n",
898 if (unpcb.unp_conn) {
899 char shoconn[4], *cp;
902 if (!(so.so_state & SS_CANTRCVMORE))
905 if (!(so.so_state & SS_CANTSENDMORE))
908 printf(" %s %lx", shoconn,
909 (u_long)unpcb.unp_conn);
914 /* print protocol number and socket address */
915 printf(" %d %lx", proto.pr_protocol, (u_long)sock);
925 * Read the cdev structure in the kernel (as pointed to by a dev_t)
926 * in order to work out the associated udev_t
929 fstat_dev2udev(void *dev)
933 if (kread(dev, &si, sizeof si)) {
934 if ((si.si_umajor & 0xffffff00) ||
935 (si.si_uminor & 0x0000ff00)) {
938 return((si.si_umajor << 8) | si.si_uminor);
940 dprintf(stderr, "can't convert dev_t %p to a udev_t\n", dev);
946 makeudev(int x, int y)
948 if ((x & 0xffffff00) || (y & 0x0000ff00))
950 return ((x << 8) | y);
955 * print name of protocol number
958 getinetproto(int number)
964 setprotoent(++isopen);
965 if ((pe = getprotobynumber(number)) != NULL)
966 printf(" %s", pe->p_name);
968 printf(" %d", number);
972 getfname(const char *filename)
977 if (stat(filename, &statbuf)) {
978 warn("%s", filename);
981 if ((cur = malloc(sizeof(DEVS))) == NULL)
986 cur->ino = statbuf.st_ino;
987 cur->fsid = statbuf.st_dev;
988 cur->name = filename;
995 (void)fprintf(stderr,
996 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n");
1002 make_printable(char *buf, int len)
1013 kread(const void *kaddr, void *uaddr, size_t nbytes)
1015 if (nbytes > 0x10000000)
1018 if (kvm_read(kd, (u_long)kaddr, (char *)uaddr, nbytes) == (ssize_t)nbytes)