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 */
116 struct fdnode *ofiles; /* buffer of pointers to file structures */
119 #define ALLOC_OFILES(d) \
120 if ((d) > maxfiles) { \
122 ofiles = malloc((d) * sizeof(struct fdnode)); \
123 if (ofiles == NULL) { \
131 static void dofiles(struct kinfo_proc *, struct proc *);
132 static void dommap(struct proc *);
133 static void vtrans(struct vnode *, struct nchandle *, int, int, off_t);
134 static int ufs_filestat(struct vnode *, struct filestat *);
135 static int nfs_filestat(struct vnode *, struct filestat *);
136 static int devfs_filestat(struct vnode *, struct filestat *);
137 static char *getmnton(struct mount *, struct namecache_list *, struct nchandle *);
138 static void pipetrans(struct pipe *, int, int);
139 static void socktrans(struct socket *, int);
140 static void getinetproto(int);
141 static int getfname(const char *);
142 static void usage(void) __dead2;
146 main(int argc, char **argv)
148 struct passwd *passwd;
149 struct kinfo_proc *p, *plast;
153 char buf[_POSIX2_LINE_MAX];
157 what = KERN_PROC_ALL;
158 nlistf = memf = NULL;
159 while ((ch = getopt(argc, argv, "fmnp:u:vwN:M:")) != -1)
179 if (!isdigit(*optarg)) {
180 warnx("-p requires a process id");
183 what = KERN_PROC_PID;
189 if (!(passwd = getpwnam(optarg)))
190 errx(1, "%s: unknown uid", optarg);
191 what = KERN_PROC_UID;
192 arg = passwd->pw_uid;
206 if (*(argv += optind)) {
207 for (; *argv; ++argv) {
211 if (!checkfile) /* file(s) specified, but none accessable */
215 ALLOC_OFILES(256); /* reserve space for file pointers */
217 if (fsflg && !checkfile) {
218 /* -f with no files means use wd */
219 if (getfname(".") == 0)
225 * Discard setgid privileges if not the running kernel so that bad
226 * guys can't print interesting stuff from kernel memory.
228 if (nlistf != NULL || memf != NULL)
231 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL)
234 if (kvm_nlist(kd, nl) != 0)
235 errx(1, "no namelist: %s", kvm_geterr(kd));
237 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL)
238 errx(1, "%s", kvm_geterr(kd));
240 printf("USER %-*.*s %*.*s FD DEV %*.*s MODE SZ|DV R/W",
241 wflg_cmd, wflg_cmd, "CMD",
242 pid_width, pid_width, "PID",
243 ino_width, ino_width, "INUM");
245 printf("USER %-*.*s %*.*s FD %-*.*s %*.*s MODE SZ|DV R/W",
246 wflg_cmd, wflg_cmd, "CMD",
247 pid_width, pid_width, "PID",
248 wflg_mnt, wflg_mnt, "PATH",
249 ino_width, ino_width, "INUM");
250 if (checkfile && fsflg == 0)
255 for (plast = &p[cnt]; p < plast; ++p) {
256 if (p->kp_stat == SZOMB)
258 if (!kread((void *)p->kp_paddr, &proc, sizeof(proc))) {
259 dprintf(stderr, "can't read proc at %p for pid %d\n",
260 (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;
396 vm_map_entry_t entryp;
397 struct vm_object object;
401 if (!kread(p->p_vmspace, &vmspace, sizeof(vmspace))) {
402 dprintf(stderr, "can't read vmspace at %p for pid %d\n",
403 (void *)p->p_vmspace, Pid);
407 map = &vmspace.vm_map;
409 for (entryp = map->header.next; entryp != &p->p_vmspace->vm_map.header;
410 entryp = entry.next) {
411 if (!kread(entryp, &entry, sizeof(entry))) {
413 "can't read vm_map_entry at %p for pid %d\n",
414 (void *)entryp, Pid);
418 if (entry.maptype == VM_MAPTYPE_SUBMAP)
421 if ((objp = entry.object.vm_object) == NULL)
424 for (; objp; objp = object.backing_object) {
425 if (!kread(objp, &object, sizeof(object))) {
427 "can't read vm_object at %p for pid %d\n",
433 prot = entry.protection;
434 fflags = (prot & VM_PROT_READ ? FREAD : 0) |
435 (prot & VM_PROT_WRITE ? FWRITE : 0);
437 switch (object.type) {
439 vtrans((struct vnode *)object.handle, NULL,
449 vtrans(struct vnode *vp, struct nchandle *ncr, int i, int flag, off_t off)
453 char rw[3], mode[15];
454 const char *badtype = NULL, *filename;
458 filename = badtype = NULL;
459 if (!kread(vp, &vn, sizeof (struct vnode))) {
460 dprintf(stderr, "can't read vnode at %p for pid %d\n",
464 if (vn.v_type == VNON || vn.v_tag == VT_NON)
466 else if (vn.v_type == VBAD)
471 if (!hammer_filestat(&vn, &fst))
475 if (!tmpfs_filestat(&vn, &fst))
479 if (!ufs_filestat(&vn, &fst))
483 if (!ufs_filestat(&vn, &fst))
487 if (!nfs_filestat(&vn, &fst))
491 if (!ntfs_filestat(&vn, &fst))
495 if (!ext2fs_filestat(&vn, &fst))
500 if (!msdosfs_filestat(&vn, &fst))
505 if (!isofs_filestat(&vn, &fst))
510 if (!devfs_filestat(&vn, &fst))
515 static char unknown[10];
516 sprintf(unknown, "?(%x)", vn.v_tag);
527 for (d = devs; d != NULL; d = d->next)
528 if (d->fsid == fst.fsid) {
530 if (d->ino == (ino_t)fst.fileid) {
535 if (fsmatch == 0 || (filename == NULL && fsflg == 0))
540 (void)printf(" %-*s %10s %jd\n",
542 getmnton(vn.v_mount, &vn.v_namecache, ncr),
548 (void)printf(" %3u,%-9u ", major(fst.fsid), minor(fst.fsid));
550 (void)printf(" %-*s", wflg_mnt, getmnton(vn.v_mount, &vn.v_namecache, ncr));
552 (void)sprintf(mode, "%o", fst.mode);
554 strmode(fst.mode, mode);
555 (void)printf(" %*ld %10s", ino_width, fst.fileid, mode);
559 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ?
560 S_IFCHR : S_IFBLK)) == NULL))
561 printf(" %3u,%-4u", major(fst.rdev), minor(fst.rdev));
563 printf(" %8s", name);
566 printf(" %jd", (intmax_t)fst.offset);
569 printf(" %8ju", (uintmax_t)fst.size);
577 if (filename && !fsflg)
578 printf(" %s", filename);
583 ufs_filestat(struct vnode *vp, struct filestat *fsp)
587 if (!kread(VTOI(vp), &inode, sizeof (inode))) {
588 dprintf(stderr, "can't read inode at %p for pid %d\n",
589 (void *)VTOI(vp), Pid);
593 * The st_dev from stat(2) is a udev_t. These kernel structures
594 * contain dev_t structures. We need to convert to udev to make
597 fsp->fsid = dev2udev(inode.i_dev);
598 fsp->fileid = (long)inode.i_number;
599 fsp->mode = (mode_t)inode.i_mode;
600 fsp->size = inode.i_size;
601 fsp->rdev = inode.i_rdev;
607 nfs_filestat(struct vnode *vp, struct filestat *fsp)
609 struct nfsnode nfsnode;
611 if (!kread(VTONFS(vp), &nfsnode, sizeof (nfsnode))) {
612 dprintf(stderr, "can't read nfsnode at %p for pid %d\n",
613 (void *)VTONFS(vp), Pid);
616 fsp->fsid = nfsnode.n_vattr.va_fsid;
617 fsp->fileid = nfsnode.n_vattr.va_fileid;
618 fsp->size = nfsnode.n_size;
619 fsp->rdev = makeudev(nfsnode.n_vattr.va_rmajor,
620 nfsnode.n_vattr.va_rminor);
621 fsp->mode = nfsnode.n_vattr.va_mode | mtrans(vp->v_type);
627 devfs_filestat(struct vnode *vp, struct filestat *fsp)
629 struct devfs_node devfs_node;
631 if (!kread(vp->v_data, &devfs_node, sizeof (devfs_node))) {
632 dprintf(stderr, "can't read devfs_node at %p for pid %d\n",
633 (void *)vp->v_data, Pid);
636 fsp->fsid = fsp->rdev = dev2udev(vp->v_rdev);
637 fsp->fileid = devfs_node.d_dir.d_ino;
638 fsp->mode = (devfs_node.mode & ~S_IFMT) | S_IFCHR;
645 getmnton(struct mount *m, struct namecache_list *ncplist, struct nchandle *ncr)
647 static struct mount mount_l;
651 char mntonname[MNAMELEN];
654 struct namecache *ncp;
655 struct namecache ncp_copy;
656 static char path[1024];
660 * If no ncp is passed try to find one via ncplist. Make sure
661 * we are using the correct mount pointer or the matching code
662 * will not know how to transition mount points properly.
664 if (ncr == NULL || ncr->ncp == NULL) {
665 ncp = ncplist->tqh_first;
673 * If we have an ncp, traceback the path. This is a kvm pointer.
676 if (!kread(m, &mount_l, sizeof(struct mount))) {
677 warnx("can't read mount table at %p", (void *)m);
680 i = sizeof(path) - 1;
684 * If this is the root of the mount then traverse
685 * to the parent mount.
687 if (ncp == mount_l.mnt_ncmountpt.ncp) {
688 ncp = mount_l.mnt_ncmounton.ncp;
691 m = mount_l.mnt_ncmounton.mount;
692 if (!kread(m, &mount_l, sizeof(struct mount))) {
693 warnx("can't read mount table at %p", (void *)m);
699 * Ok, pull out the ncp and extract the name
701 if (!kread(ncp, &ncp_copy, sizeof(ncp_copy))) {
702 warnx("can't read ncp at %p", ncp);
705 if (i <= ncp_copy.nc_nlen)
707 i -= ncp_copy.nc_nlen;
708 if (!kread(ncp_copy.nc_name, path + i, ncp_copy.nc_nlen)) {
709 warnx("can't read ncp %p path component at %p", ncp, ncp_copy.nc_name);
712 make_printable(path + i, ncp_copy.nc_nlen);
714 ncp = ncp_copy.nc_parent;
716 if (i == sizeof(path) - 1)
722 * If all else fails print out the mount point path
724 for (mt = mhead; mt != NULL; mt = mt->next) {
726 return (mt->mntonname);
728 if (!kread(m, &mount_l, sizeof(struct mount))) {
729 warnx("can't read mount table at %p", (void *)m);
732 if ((mt = malloc(sizeof (struct mtab))) == NULL)
735 bcopy(&mount_l.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN);
738 return (mt->mntonname);
742 pipetrans(struct pipe *pi, int i, int flag)
750 if (!kread(pi, &pip, sizeof(struct pipe))) {
751 dprintf(stderr, "can't read pipe at %p\n", (void *)pi);
755 printf("* pipe %8lx <-> %8lx", (u_long)pi, (u_long)pip.pipe_peer);
756 printf(" %6d", (int)(pip.pipe_buffer.windex - pip.pipe_buffer.rindex));
771 socktrans(struct socket *sock, int i)
773 static const char *stypename[] = {
783 struct protosw proto;
793 if (!kread(sock, &so, sizeof(struct socket))) {
794 dprintf(stderr, "can't read sock at %p\n", (void *)sock);
798 /* fill in protosw entry */
799 if (!kread(so.so_proto, &proto, sizeof(struct protosw))) {
800 dprintf(stderr, "can't read protosw at %p",
801 (void *)so.so_proto);
806 if (!kread(proto.pr_domain, &dom, sizeof(struct domain))) {
807 dprintf(stderr, "can't read domain at %p\n",
808 (const void *)proto.pr_domain);
812 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname,
813 sizeof(dname) - 1)) < 0) {
814 dprintf(stderr, "can't read domain name at %p\n",
815 (void *)dom.dom_name);
821 if ((u_short)so.so_type > STYPEMAX)
822 printf("* %s ?%d", dname, so.so_type);
824 printf("* %s %s", dname, stypename[so.so_type]);
827 * protocol specific formatting
829 * Try to find interesting things to print. For tcp, the interesting
830 * thing is the address of the tcpcb, for udp and others, just the
831 * inpcb (socket pcb). For unix domain, its the address of the socket
832 * pcb and the address of the connected pcb (if connected). Otherwise
833 * just print the protocol number and address of the socket itself.
834 * The idea is not to duplicate netstat, but to make available enough
835 * information for further analysis.
837 switch(dom.dom_family) {
840 getinetproto(proto.pr_protocol);
841 if (proto.pr_protocol == IPPROTO_TCP ) {
843 if (kvm_read(kd, (u_long)so.so_pcb,
844 (char *)&inpcb, sizeof(struct inpcb))
845 != sizeof(struct inpcb)) {
847 "can't read inpcb at %p\n",
851 printf(" %lx", (u_long)inpcb.inp_ppcb);
855 printf(" %lx", (u_long)so.so_pcb);
858 /* print address of pcb and connected pcb */
860 printf(" %lx", (u_long)so.so_pcb);
861 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb,
862 sizeof(struct unpcb)) != sizeof(struct unpcb)){
863 dprintf(stderr, "can't read unpcb at %p\n",
867 if (unpcb.unp_conn) {
868 char shoconn[4], *cp;
871 if (!(so.so_state & SS_CANTRCVMORE))
874 if (!(so.so_state & SS_CANTSENDMORE))
877 printf(" %s %lx", shoconn,
878 (u_long)unpcb.unp_conn);
883 /* print protocol number and socket address */
884 printf(" %d %lx", proto.pr_protocol, (u_long)sock);
894 * Read the cdev structure in the kernel (as pointed to by a dev_t)
895 * in order to work out the associated udev_t
902 if (kread(dev, &si, sizeof si)) {
903 if ((si.si_umajor & 0xffffff00) ||
904 (si.si_uminor & 0x0000ff00)) {
907 return((si.si_umajor << 8) | si.si_uminor);
909 dprintf(stderr, "can't convert dev_t %p to a udev_t\n", dev);
915 makeudev(int x, int y)
917 if ((x & 0xffffff00) || (y & 0x0000ff00))
919 return ((x << 8) | y);
924 * print name of protocol number
927 getinetproto(int number)
933 setprotoent(++isopen);
934 if ((pe = getprotobynumber(number)) != NULL)
935 printf(" %s", pe->p_name);
937 printf(" %d", number);
941 getfname(const char *filename)
946 if (stat(filename, &statbuf)) {
947 warn("%s", filename);
950 if ((cur = malloc(sizeof(DEVS))) == NULL)
955 cur->ino = statbuf.st_ino;
956 cur->fsid = statbuf.st_dev;
957 cur->name = filename;
964 (void)fprintf(stderr,
965 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n");
971 make_printable(char *buf, int len)
982 kread(const void *kaddr, void *uaddr, size_t nbytes)
984 if (nbytes > 0x10000000)
987 if (kvm_read(kd, (u_long)kaddr, (char *)uaddr, nbytes) == (ssize_t)nbytes)