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);
97 static int kreadent(const void *kaddr, vm_map_entry_t copy);
100 struct nlist nl[] = {
105 int fsflg, /* show files on same filesystem as file(s) argument */
106 pflg, /* show files open by a particular pid */
107 uflg; /* show files open by a particular (effective) user */
108 int checkfile; /* true if restricting to particular files or filesystems */
109 int nflg; /* (numerical) display f.s. and rdev as dev_t */
110 int vflg; /* display errors in locating kernel data objects etc... */
111 int mflg; /* include memory-mapped files */
122 struct fdnode *ofiles; /* buffer of pointers to file structures */
125 #define ALLOC_OFILES(d) \
126 if ((d) > maxfiles) { \
128 ofiles = malloc((d) * sizeof(struct fdnode)); \
129 if (ofiles == NULL) { \
137 static void dofiles(struct kinfo_proc *, struct proc *);
138 static void dommap(struct proc *);
139 static void vtrans(struct vnode *, struct nchandle *, int, int, off_t);
140 static int ufs_filestat(struct vnode *, struct filestat *);
141 static int nfs_filestat(struct vnode *, struct filestat *);
142 static int devfs_filestat(struct vnode *, struct filestat *);
143 static char *getmnton(struct mount *, struct namecache_list *, struct nchandle *);
144 static void pipetrans(struct pipe *, int, int);
145 static void socktrans(struct socket *, int);
146 static void getinetproto(int);
147 static int getfname(const char *);
148 static void usage(void) __dead2;
152 main(int argc, char **argv)
154 struct passwd *passwd;
155 struct kinfo_proc *p, *plast;
159 char buf[_POSIX2_LINE_MAX];
163 what = KERN_PROC_ALL;
164 nlistf = memf = NULL;
165 while ((ch = getopt(argc, argv, "fmnp:u:vwN:M:")) != -1)
185 if (!isdigit(*optarg)) {
186 warnx("-p requires a process id");
189 what = KERN_PROC_PID;
195 if (!(passwd = getpwnam(optarg)))
196 errx(1, "%s: unknown uid", optarg);
197 what = KERN_PROC_UID;
198 arg = passwd->pw_uid;
212 if (*(argv += optind)) {
213 for (; *argv; ++argv) {
217 if (!checkfile) /* file(s) specified, but none accessable */
221 ALLOC_OFILES(256); /* reserve space for file pointers */
223 if (fsflg && !checkfile) {
224 /* -f with no files means use wd */
225 if (getfname(".") == 0)
231 * Discard setgid privileges if not the running kernel so that bad
232 * guys can't print interesting stuff from kernel memory.
234 if (nlistf != NULL || memf != NULL)
237 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL)
240 if (kvm_nlist(kd, nl) != 0)
241 errx(1, "no namelist: %s", kvm_geterr(kd));
243 if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL)
244 errx(1, "%s", kvm_geterr(kd));
246 printf("USER %-*.*s %*.*s FD DEV %*.*s MODE SZ|DV R/W",
247 wflg_cmd, wflg_cmd, "CMD",
248 pid_width, pid_width, "PID",
249 ino_width, ino_width, "INUM");
251 printf("USER %-*.*s %*.*s FD %-*.*s %*.*s MODE SZ|DV R/W",
252 wflg_cmd, wflg_cmd, "CMD",
253 pid_width, pid_width, "PID",
254 wflg_mnt, wflg_mnt, "PATH",
255 ino_width, ino_width, "INUM");
256 if (checkfile && fsflg == 0)
261 for (plast = &p[cnt]; p < plast; ++p) {
262 if (p->kp_stat == SZOMB)
264 if (!kread((void *)p->kp_paddr, &proc, sizeof(proc))) {
265 dprintf(stderr, "can't read proc at %p for pid %d\n",
266 (void *)p->kp_paddr, Pid);
277 printf("%-8.8s %-*s %*d", Uname, wflg_cmd, Comm, pid_width, Pid); \
300 * print open files attributed to this process
303 dofiles(struct kinfo_proc *kp, struct proc *p)
307 struct filedesc filed;
308 struct ktrace_node ktrace_node;
310 Uname = user_from_uid(kp->kp_uid, 0);
313 make_printable(Comm, strlen(Comm));
317 if (!kread(p->p_fd, &filed, sizeof (filed))) {
318 dprintf(stderr, "can't read filedesc at %p for pid %d\n",
319 (void *)p->p_fd, Pid);
323 * root directory vnode, if one
326 vtrans(filed.fd_rdir, &filed.fd_nrdir, RDIR, FREAD, 0);
328 * current working directory vnode
330 vtrans(filed.fd_cdir, &filed.fd_ncdir, CDIR, FREAD, 0);
332 * ktrace vnode, if one
334 if (p->p_tracenode) {
335 if (kread(p->p_tracenode, &ktrace_node, sizeof (ktrace_node)))
336 vtrans(ktrace_node.kn_vp, NULL, TRACE, FREAD|FWRITE, 0);
342 vtrans(p->p_textvp, NULL, TEXT, FREAD, 0);
346 ALLOC_OFILES(filed.fd_lastfile+1);
347 if (!kread(filed.fd_files, ofiles,
348 (filed.fd_lastfile+1) * sizeof(struct fdnode))) {
350 "can't read file structures at %p for pid %d\n",
351 (void *)filed.fd_files, Pid);
354 for (i = 0; i <= filed.fd_lastfile; i++) {
355 if (ofiles[i].fp == NULL)
357 if (!kread(ofiles[i].fp, &file, sizeof (struct file))) {
358 dprintf(stderr, "can't read file %d at %p for pid %d\n",
359 i, (void *)ofiles[i].fp, Pid);
362 if (file.f_type == DTYPE_VNODE) {
363 vtrans((struct vnode *)file.f_data, &file.f_nchandle,
364 i, file.f_flag, file.f_offset);
365 } else if (file.f_type == DTYPE_SOCKET) {
367 socktrans((struct socket *)file.f_data, i);
370 else if (file.f_type == DTYPE_PIPE) {
372 pipetrans((struct pipe *)file.f_data, i,
377 else if (file.f_type == DTYPE_FIFO) {
379 vtrans((struct vnode *)file.f_data,
381 i, file.f_flag, file.f_offset);
386 "unknown file type %d for file %d of pid %d\n",
387 file.f_type, i, Pid);
394 kinfo_vm_map_entry_first(vm_map_t map, vm_map_entry_t copy)
398 ken = map->rb_root.rbh_root;
401 if (!kreadent(ken, copy))
403 while (copy->rb_entry.rbe_left) {
404 ken = copy->rb_entry.rbe_left;
405 if (!kreadent(ken, copy))
413 kinfo_vm_map_entry_next(vm_map_entry_t ken, vm_map_entry_t copy)
417 if (copy->rb_entry.rbe_right) {
418 ken = copy->rb_entry.rbe_right;
419 if (!kreadent(ken, copy))
421 while (copy->rb_entry.rbe_left) {
422 ken = copy->rb_entry.rbe_left;
423 if (!kreadent(ken, copy))
427 if ((ken2 = copy->rb_entry.rbe_parent) == NULL)
429 if (!kreadent(ken2, copy))
431 if (ken == copy->rb_entry.rbe_left) {
434 while (ken == copy->rb_entry.rbe_right) {
436 ken2 = copy->rb_entry.rbe_parent;
437 if (!kreadent(ken2, copy))
447 dommap(struct proc *p)
449 struct vmspace vmspace;
451 struct vm_map_entry entry;
453 struct vm_object object;
457 if (!kread(p->p_vmspace, &vmspace, sizeof(vmspace))) {
458 dprintf(stderr, "can't read vmspace at %p for pid %d\n",
459 (void *)p->p_vmspace, Pid);
463 map = &vmspace.vm_map;
464 for (ken = kinfo_vm_map_entry_first(map, &entry);
466 ken = kinfo_vm_map_entry_next(ken, &entry)) {
467 if (entry.maptype == VM_MAPTYPE_SUBMAP)
470 if ((objp = entry.object.vm_object) == NULL)
473 for (; objp; objp = object.backing_object) {
474 if (!kread(objp, &object, sizeof(object))) {
476 "can't read vm_object at %p for pid %d\n",
482 prot = entry.protection;
483 fflags = (prot & VM_PROT_READ ? FREAD : 0) |
484 (prot & VM_PROT_WRITE ? FWRITE : 0);
486 switch (object.type) {
488 vtrans((struct vnode *)object.handle, NULL,
498 vtrans(struct vnode *vp, struct nchandle *ncr, int i, int flag, off_t off)
502 char rw[3], mode[15];
503 const char *badtype = NULL, *filename;
507 filename = badtype = NULL;
508 if (!kread(vp, &vn, sizeof (struct vnode))) {
509 dprintf(stderr, "can't read vnode at %p for pid %d\n",
513 if (vn.v_type == VNON || vn.v_tag == VT_NON)
515 else if (vn.v_type == VBAD)
520 if (!hammer_filestat(&vn, &fst))
524 if (!hammer2_filestat(&vn, &fst))
528 if (!tmpfs_filestat(&vn, &fst))
532 if (!ufs_filestat(&vn, &fst))
536 if (!ufs_filestat(&vn, &fst))
540 if (!nfs_filestat(&vn, &fst))
544 if (!ntfs_filestat(&vn, &fst))
548 if (!ext2fs_filestat(&vn, &fst))
553 if (!msdosfs_filestat(&vn, &fst))
558 if (!isofs_filestat(&vn, &fst))
563 if (!devfs_filestat(&vn, &fst))
568 static char unknown[10];
569 sprintf(unknown, "?(%x)", vn.v_tag);
580 for (d = devs; d != NULL; d = d->next)
581 if (d->fsid == fst.fsid) {
583 if (d->ino == (ino_t)fst.fileid) {
588 if (fsmatch == 0 || (filename == NULL && fsflg == 0))
593 (void)printf(" %-*s %10s %jd\n",
595 getmnton(vn.v_mount, &vn.v_namecache, ncr),
602 major(fst.fsid), minor(fst.fsid));
605 wflg_mnt, getmnton(vn.v_mount, &vn.v_namecache, ncr));
607 sprintf(mode, "%o", fst.mode);
609 strmode(fst.mode, mode);
611 printf(" %*ld %10s", ino_width, fst.fileid, mode);
616 if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ?
617 S_IFCHR : S_IFBLK)) == NULL))
618 printf(" %3u,%-4u", major(fst.rdev), minor(fst.rdev));
620 printf(" %8s", name);
623 printf(" %jd", (intmax_t)fst.offset);
626 printf(" %8ju", (uintmax_t)fst.size);
634 if (filename && !fsflg)
635 printf(" %s", filename);
640 ufs_filestat(struct vnode *vp, struct filestat *fsp)
644 if (!kread(VTOI(vp), &inode, sizeof (inode))) {
645 dprintf(stderr, "can't read inode at %p for pid %d\n",
646 (void *)VTOI(vp), Pid);
650 * The st_dev from stat(2) is a udev_t. These kernel structures
651 * contain dev_t structures. We need to convert to udev to make
654 fsp->fsid = dev2udev(inode.i_dev);
655 fsp->fileid = (long)inode.i_number;
656 fsp->mode = (mode_t)inode.i_mode;
657 fsp->size = inode.i_size;
658 fsp->rdev = inode.i_rdev;
664 nfs_filestat(struct vnode *vp, struct filestat *fsp)
666 struct nfsnode nfsnode;
668 if (!kread(VTONFS(vp), &nfsnode, sizeof (nfsnode))) {
669 dprintf(stderr, "can't read nfsnode at %p for pid %d\n",
670 (void *)VTONFS(vp), Pid);
673 fsp->fsid = nfsnode.n_vattr.va_fsid;
674 fsp->fileid = nfsnode.n_vattr.va_fileid;
675 fsp->size = nfsnode.n_size;
676 fsp->rdev = makeudev(nfsnode.n_vattr.va_rmajor,
677 nfsnode.n_vattr.va_rminor);
678 fsp->mode = nfsnode.n_vattr.va_mode | mtrans(vp->v_type);
684 devfs_filestat(struct vnode *vp, struct filestat *fsp)
686 struct devfs_node devfs_node;
688 if (!kread(vp->v_data, &devfs_node, sizeof (devfs_node))) {
689 dprintf(stderr, "can't read devfs_node at %p for pid %d\n",
690 (void *)vp->v_data, Pid);
693 fsp->fsid = fsp->rdev = dev2udev(vp->v_rdev);
694 fsp->fileid = devfs_node.d_dir.d_ino;
695 fsp->mode = (devfs_node.mode & ~S_IFMT) | S_IFCHR;
702 getmnton(struct mount *m, struct namecache_list *ncplist, struct nchandle *ncr)
704 static struct mount mount_l;
708 char mntonname[MNAMELEN];
711 struct namecache *ncp;
712 struct namecache ncp_copy;
713 static char path[1024];
717 * If no ncp is passed try to find one via ncplist. Make sure
718 * we are using the correct mount pointer or the matching code
719 * will not know how to transition mount points properly.
721 if (ncr == NULL || ncr->ncp == NULL) {
722 ncp = ncplist->tqh_first;
730 * If we have an ncp, traceback the path. This is a kvm pointer.
733 if (!kread(m, &mount_l, sizeof(struct mount))) {
734 warnx("can't read mount table at %p", (void *)m);
737 i = sizeof(path) - 1;
741 * If this is the root of the mount then traverse
742 * to the parent mount.
744 if (ncp == mount_l.mnt_ncmountpt.ncp) {
745 ncp = mount_l.mnt_ncmounton.ncp;
748 m = mount_l.mnt_ncmounton.mount;
749 if (!kread(m, &mount_l, sizeof(struct mount))) {
750 warnx("can't read mount table at %p", (void *)m);
756 * Ok, pull out the ncp and extract the name
758 if (!kread(ncp, &ncp_copy, sizeof(ncp_copy))) {
759 warnx("can't read ncp at %p", ncp);
762 if (i <= ncp_copy.nc_nlen)
764 i -= ncp_copy.nc_nlen;
765 if (!kread(ncp_copy.nc_name, path + i, ncp_copy.nc_nlen)) {
766 warnx("can't read ncp %p path component at %p", ncp, ncp_copy.nc_name);
769 make_printable(path + i, ncp_copy.nc_nlen);
771 ncp = ncp_copy.nc_parent;
773 if (i == sizeof(path) - 1)
779 * If all else fails print out the mount point path
781 for (mt = mhead; mt != NULL; mt = mt->next) {
783 return (mt->mntonname);
785 if (!kread(m, &mount_l, sizeof(struct mount))) {
786 warnx("can't read mount table at %p", (void *)m);
789 if ((mt = malloc(sizeof (struct mtab))) == NULL)
792 bcopy(&mount_l.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN);
795 return (mt->mntonname);
799 pipetrans(struct pipe *pi, int i, int flag)
809 if ((intptr_t)pi & 1) {
820 pi = (void *)((intptr_t)pi & ~(intptr_t)1);
823 if (!kread(pi, &pip, sizeof(struct pipe))) {
824 dprintf(stderr, "can't read pipe at %p\n", (void *)pi);
828 printf("* pipe %8lx (%c<->%c)", (u_long)pi, side1, side2);
829 printf(" ravail %-zd wavail %-zd",
830 b1->windex - b1->rindex,
831 b2->windex - b2->rindex);
846 socktrans(struct socket *sock, int i)
848 static const char *stypename[] = {
858 struct protosw proto;
868 if (!kread(sock, &so, sizeof(struct socket))) {
869 dprintf(stderr, "can't read sock at %p\n", (void *)sock);
873 /* fill in protosw entry */
874 if (!kread(so.so_proto, &proto, sizeof(struct protosw))) {
875 dprintf(stderr, "can't read protosw at %p",
876 (void *)so.so_proto);
881 if (!kread(proto.pr_domain, &dom, sizeof(struct domain))) {
882 dprintf(stderr, "can't read domain at %p\n",
883 (const void *)proto.pr_domain);
887 if ((len = kvm_read(kd, (u_long)dom.dom_name, dname,
888 sizeof(dname) - 1)) < 0) {
889 dprintf(stderr, "can't read domain name at %p\n",
890 (void *)dom.dom_name);
896 if ((u_short)so.so_type > STYPEMAX)
897 printf("* %s ?%d", dname, so.so_type);
899 printf("* %s %s", dname, stypename[so.so_type]);
902 * protocol specific formatting
904 * Try to find interesting things to print. For tcp, the interesting
905 * thing is the address of the tcpcb, for udp and others, just the
906 * inpcb (socket pcb). For unix domain, its the address of the socket
907 * pcb and the address of the connected pcb (if connected). Otherwise
908 * just print the protocol number and address of the socket itself.
909 * The idea is not to duplicate netstat, but to make available enough
910 * information for further analysis.
912 switch(dom.dom_family) {
915 getinetproto(proto.pr_protocol);
916 if (proto.pr_protocol == IPPROTO_TCP ) {
918 if (kvm_read(kd, (u_long)so.so_pcb,
919 (char *)&inpcb, sizeof(struct inpcb))
920 != sizeof(struct inpcb)) {
922 "can't read inpcb at %p\n",
926 printf(" %lx", (u_long)inpcb.inp_ppcb);
930 printf(" %lx", (u_long)so.so_pcb);
933 /* print address of pcb and connected pcb */
935 printf(" %lx", (u_long)so.so_pcb);
936 if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb,
937 sizeof(struct unpcb)) != sizeof(struct unpcb)){
938 dprintf(stderr, "can't read unpcb at %p\n",
942 if (unpcb.unp_conn) {
943 char shoconn[4], *cp;
946 if (!(so.so_state & SS_CANTRCVMORE))
949 if (!(so.so_state & SS_CANTSENDMORE))
952 printf(" %s %lx", shoconn,
953 (u_long)unpcb.unp_conn);
958 /* print protocol number and socket address */
959 printf(" %d %lx", proto.pr_protocol, (u_long)sock);
969 * Read the cdev structure in the kernel (as pointed to by a dev_t)
970 * in order to work out the associated udev_t
977 if (kread(dev, &si, sizeof si)) {
978 if ((si.si_umajor & 0xffffff00) ||
979 (si.si_uminor & 0x0000ff00)) {
982 return((si.si_umajor << 8) | si.si_uminor);
984 dprintf(stderr, "can't convert dev_t %p to a udev_t\n", dev);
990 makeudev(int x, int y)
992 if ((x & 0xffffff00) || (y & 0x0000ff00))
994 return ((x << 8) | y);
999 * print name of protocol number
1002 getinetproto(int number)
1005 struct protoent *pe;
1008 setprotoent(++isopen);
1009 if ((pe = getprotobynumber(number)) != NULL)
1010 printf(" %s", pe->p_name);
1012 printf(" %d", number);
1016 getfname(const char *filename)
1018 struct stat statbuf;
1021 if (stat(filename, &statbuf)) {
1022 warn("%s", filename);
1025 if ((cur = malloc(sizeof(DEVS))) == NULL)
1030 cur->ino = statbuf.st_ino;
1031 cur->fsid = statbuf.st_dev;
1032 cur->name = filename;
1039 (void)fprintf(stderr,
1040 "usage: fstat [-fmnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n");
1046 make_printable(char *buf, int len)
1057 kread(const void *kaddr, void *uaddr, size_t nbytes)
1059 if (nbytes > 0x10000000)
1062 if (kvm_read(kd, (u_long)kaddr, (char *)uaddr, nbytes) == (ssize_t)nbytes)
1070 kreadent(const void *kaddr, vm_map_entry_t copy)
1072 if (kread(kaddr, copy, sizeof(*copy)))
1074 dprintf(stderr, "can't read vm_map_entry at %p for pid %d\n",