Annotation of src/usr.bin/fstat/fstat.c, Revision 1.103
1.103 ! visa 1: /* $OpenBSD: fstat.c,v 1.102 2021/07/17 20:46:02 kn Exp $ */
1.65 millert 2:
3: /*
1.97 millert 4: * Copyright (c) 2009 Todd C. Miller <millert@openbsd.org>
1.65 millert 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.2 niklas 18:
1.1 deraadt 19: /*-
20: * Copyright (c) 1988, 1993
21: * The Regents of the University of California. All rights reserved.
22: *
23: * Redistribution and use in source and binary forms, with or without
24: * modification, are permitted provided that the following conditions
25: * are met:
26: * 1. Redistributions of source code must retain the above copyright
27: * notice, this list of conditions and the following disclaimer.
28: * 2. Redistributions in binary form must reproduce the above copyright
29: * notice, this list of conditions and the following disclaimer in the
30: * documentation and/or other materials provided with the distribution.
1.43 millert 31: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 32: * may be used to endorse or promote products derived from this software
33: * without specific prior written permission.
34: *
35: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
36: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
38: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
39: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
40: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
41: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
43: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
44: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
45: * SUCH DAMAGE.
46: */
47:
1.80 deraadt 48: #include <sys/types.h>
1.68 millert 49: #include <sys/queue.h>
50: #include <sys/mount.h>
1.1 deraadt 51: #include <sys/stat.h>
52: #include <sys/vnode.h>
53: #include <sys/socket.h>
54: #include <sys/socketvar.h>
1.37 deraadt 55: #include <sys/eventvar.h>
1.1 deraadt 56: #include <sys/sysctl.h>
1.90 deraadt 57: #include <sys/filedesc.h>
1.65 millert 58: #define _KERNEL /* for DTYPE_* */
1.1 deraadt 59: #include <sys/file.h>
60: #undef _KERNEL
1.61 thib 61:
1.1 deraadt 62: #include <net/route.h>
63: #include <netinet/in.h>
1.26 itojun 64:
65: #include <netdb.h>
1.5 deraadt 66: #include <arpa/inet.h>
67:
1.22 art 68: #include <sys/pipe.h>
69:
1.1 deraadt 70: #include <ctype.h>
71: #include <errno.h>
1.65 millert 72: #include <fcntl.h>
1.1 deraadt 73: #include <kvm.h>
1.2 niklas 74: #include <limits.h>
1.1 deraadt 75: #include <nlist.h>
76: #include <pwd.h>
1.72 guenther 77: #include <search.h>
1.68 millert 78: #include <signal.h>
1.1 deraadt 79: #include <stdio.h>
1.65 millert 80: #include <stdint.h>
1.1 deraadt 81: #include <stdlib.h>
82: #include <string.h>
1.11 millert 83: #include <unistd.h>
1.17 mickey 84: #include <err.h>
1.1 deraadt 85:
1.68 millert 86: #include "fstat.h"
87:
1.80 deraadt 88: #define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b))
89:
1.98 martijn 90: struct fstat_filter {
91: int what;
92: int arg;
93: };
94:
1.68 millert 95: struct fileargs fileargs = SLIST_HEAD_INITIALIZER(fileargs);
1.1 deraadt 96:
1.46 deraadt 97: int fsflg; /* show files on same filesystem as file(s) argument */
98: int uflg; /* show files open by a particular (effective) user */
1.38 deraadt 99: int checkfile; /* true if restricting to particular files or filesystems */
1.1 deraadt 100: int nflg; /* (numerical) display f.s. and rdev as dev_t */
1.28 hugh 101: int oflg; /* display file offset */
1.56 mickey 102: int sflg; /* display file xfer/bytes counters */
1.1 deraadt 103: int vflg; /* display errors in locating kernel data objects etc... */
1.85 mestre 104: int cflg; /* fuser only */
1.68 millert 105:
1.85 mestre 106: int fuser; /* 1 if we are fuser, 0 if we are fstat */
107: int signo; /* signal to send (fuser only) */
1.1 deraadt 108:
1.98 martijn 109: int nfilter = 0; /* How many uid/pid filters are in place */
110: struct fstat_filter *filter = NULL; /* An array of uid/pid filters */
111:
1.1 deraadt 112: kvm_t *kd;
1.62 deraadt 113: uid_t uid;
1.1 deraadt 114:
1.76 guenther 115: void fstat_dofile(struct kinfo_file *);
1.68 millert 116: void fstat_header(void);
1.35 millert 117: void getinetproto(int);
1.85 mestre 118: __dead void usage(void);
1.35 millert 119: int getfname(char *);
1.76 guenther 120: void kqueuetrans(struct kinfo_file *);
121: void pipetrans(struct kinfo_file *);
122: struct kinfo_file *splice_find(char, u_int64_t);
123: void splice_insert(char, u_int64_t, struct kinfo_file *);
124: void find_splices(struct kinfo_file *, int);
125: void print_inet_details(struct kinfo_file *);
126: void print_inet6_details(struct kinfo_file *);
127: void print_sock_details(struct kinfo_file *);
128: void socktrans(struct kinfo_file *);
129: void vtrans(struct kinfo_file *);
1.47 deraadt 130: const char *inet6_addrstr(struct in6_addr *);
1.68 millert 131: int signame_to_signum(char *);
1.74 deraadt 132: void hide(void *p);
133:
134: int hideroot;
135:
136: void
137: hide(void *p)
138: {
139: printf("%p", hideroot ? NULL : p);
140: }
1.1 deraadt 141:
1.11 millert 142: int
1.40 deraadt 143: main(int argc, char *argv[])
1.1 deraadt 144: {
1.76 guenther 145: struct kinfo_file *kf, *kflast;
1.98 martijn 146: int ch;
1.68 millert 147: char *memf, *nlistf, *optstr;
1.2 niklas 148: char buf[_POSIX2_LINE_MAX];
1.58 tedu 149: const char *errstr;
1.65 millert 150: int cnt, flags;
1.1 deraadt 151:
1.74 deraadt 152: hideroot = getuid();
153:
1.1 deraadt 154: nlistf = memf = NULL;
1.28 hugh 155: oflg = 0;
1.68 millert 156:
157: /* are we fstat(1) or fuser(1)? */
158: if (strcmp(__progname, "fuser") == 0) {
159: fuser = 1;
160: optstr = "cfks:uM:N:";
161: } else {
162: fuser = 0;
163: optstr = "fnop:su:vN:M:";
164: }
1.95 millert 165:
1.68 millert 166: /*
167: * fuser and fstat share three flags: -f, -s and -u. In both cases
168: * -f is a boolean, but for -u fstat wants an argument while fuser
169: * does not and for -s fuser wants an argument whereas fstat does not.
170: */
171: while ((ch = getopt(argc, argv, optstr)) != -1)
1.60 sobrado 172: switch ((char)ch) {
1.68 millert 173: case 'c':
174: if (fsflg)
175: usage();
176: cflg = 1;
177: break;
1.1 deraadt 178: case 'f':
1.68 millert 179: if (cflg)
180: usage();
1.1 deraadt 181: fsflg = 1;
182: break;
1.68 millert 183: case 'k':
184: sflg = 1;
185: signo = SIGKILL;
186: break;
1.1 deraadt 187: case 'M':
188: memf = optarg;
189: break;
190: case 'N':
191: nlistf = optarg;
192: break;
193: case 'n':
194: nflg = 1;
195: break;
1.28 hugh 196: case 'o':
197: oflg = 1;
198: break;
1.1 deraadt 199: case 'p':
1.98 martijn 200: if ((filter = recallocarray(filter, nfilter, nfilter + 1,
201: sizeof(*filter))) == NULL)
202: err(1, NULL);
203: filter[nfilter].arg = strtonum(optarg, 0, INT_MAX,
204: &errstr);
1.58 tedu 205: if (errstr != NULL) {
1.74 deraadt 206: warnx("-p requires a process id, %s: %s",
1.58 tedu 207: errstr, optarg);
1.1 deraadt 208: usage();
209: }
1.98 martijn 210: filter[nfilter].what = KERN_FILE_BYPID;
211: nfilter++;
1.1 deraadt 212: break;
1.56 mickey 213: case 's':
214: sflg = 1;
1.68 millert 215: if (fuser) {
216: signo = signame_to_signum(optarg);
217: if (signo == -1) {
218: warnx("invalid signal %s", optarg);
219: usage();
220: }
221: }
1.56 mickey 222: break;
1.1 deraadt 223: case 'u':
1.98 martijn 224: uflg = 1;
1.68 millert 225: if (!fuser) {
1.95 millert 226: uid_t uid;
227:
228: if (uid_from_user(optarg, &uid) == -1) {
229: uid = strtonum(optarg, 0, UID_MAX,
1.69 nicm 230: &errstr);
231: if (errstr != NULL) {
232: errx(1, "%s: unknown uid",
233: optarg);
234: }
1.95 millert 235: }
1.98 martijn 236: if ((filter = recallocarray(filter, nfilter,
237: nfilter + 1, sizeof(*filter))) == NULL)
238: err(1, NULL);
239: filter[nfilter].arg = uid;
240: filter[nfilter].what = KERN_FILE_BYUID;
241: nfilter++;
1.68 millert 242: }
1.1 deraadt 243: break;
244: case 'v':
245: vflg = 1;
246: break;
247: default:
248: usage();
249: }
250:
1.41 deraadt 251: /*
1.62 deraadt 252: * get the uid, for oflg and sflg
253: */
254: uid = getuid();
255:
256: /*
1.65 millert 257: * Use sysctl unless inspecting an alternate kernel.
1.41 deraadt 258: */
1.65 millert 259: if (nlistf == NULL || memf == NULL)
260: flags = KVM_NO_FILES;
261: else
262: flags = O_RDONLY;
1.41 deraadt 263:
1.65 millert 264: if ((kd = kvm_openfiles(nlistf, memf, NULL, flags, buf)) == NULL)
1.41 deraadt 265: errx(1, "%s", buf);
266:
1.1 deraadt 267: if (*(argv += optind)) {
268: for (; *argv; ++argv) {
269: if (getfname(*argv))
270: checkfile = 1;
271: }
1.68 millert 272: /* file(s) specified, but none accessible */
273: if (!checkfile)
1.1 deraadt 274: exit(1);
1.68 millert 275: } else if (fuser)
276: usage();
1.1 deraadt 277:
1.68 millert 278: if (!fuser && fsflg && !checkfile) {
279: /* fstat -f with no files means use wd */
1.1 deraadt 280: if (getfname(".") == 0)
281: exit(1);
282: checkfile = 1;
283: }
1.16 deraadt 284:
1.98 martijn 285: if (nfilter == 1) {
286: if ((kf = kvm_getfiles(kd, filter[0].what, filter[0].arg,
287: sizeof(*kf), &cnt)) == NULL)
288: errx(1, "%s", kvm_geterr(kd));
289: } else {
290: if ((kf = kvm_getfiles(kd, KERN_FILE_BYPID, -1, sizeof(*kf),
291: &cnt)) == NULL)
292: errx(1, "%s", kvm_geterr(kd));
293: }
1.81 deraadt 294:
1.82 deraadt 295: if (fuser) {
1.86 semarie 296: /*
297: * fuser
298: * uflg: need "getpw"
299: * sflg: need "proc" (might call kill(2))
300: */
301: if (uflg && sflg) {
302: if (pledge("stdio rpath getpw proc", NULL) == -1)
303: err(1, "pledge");
304: } else if (uflg) {
305: if (pledge("stdio rpath getpw", NULL) == -1)
306: err(1, "pledge");
307: } else if (sflg) {
1.82 deraadt 308: if (pledge("stdio rpath proc", NULL) == -1)
309: err(1, "pledge");
310: } else {
311: if (pledge("stdio rpath", NULL) == -1)
312: err(1, "pledge");
313: }
314: } else {
1.86 semarie 315: /* fstat */
1.84 deraadt 316: if (pledge("stdio rpath getpw", NULL) == -1)
1.82 deraadt 317: err(1, "pledge");
318: }
1.68 millert 319:
1.72 guenther 320: find_splices(kf, cnt);
1.68 millert 321: if (!fuser)
322: fstat_header();
323: for (kflast = &kf[cnt]; kf < kflast; ++kf) {
324: if (fuser)
325: fuser_check(kf);
326: else
327: fstat_dofile(kf);
328: }
329: if (fuser)
330: fuser_run();
331:
332: exit(0);
333: }
334:
335: void
336: fstat_header(void)
337: {
1.1 deraadt 338: if (nflg)
339: printf("%s",
1.91 deraadt 340: "USER CMD PID FD DEV INUM MODE R/W SZ|DV");
1.1 deraadt 341: else
342: printf("%s",
1.91 deraadt 343: "USER CMD PID FD MOUNT INUM MODE R/W SZ|DV");
1.28 hugh 344: if (oflg)
345: printf("%s", ":OFFSET ");
1.1 deraadt 346: if (checkfile && fsflg == 0)
1.56 mickey 347: printf(" NAME");
348: if (sflg)
349: printf(" XFERS KBYTES");
350: putchar('\n');
1.1 deraadt 351: }
352:
1.94 millert 353: const char *Uname, *Comm;
1.62 deraadt 354: uid_t *procuid;
1.14 deraadt 355: pid_t Pid;
1.1 deraadt 356:
1.34 deraadt 357: #define PREFIX(i) do { \
1.39 mpech 358: printf("%-8.8s %-10s %5ld", Uname, Comm, (long)Pid); \
1.60 sobrado 359: switch (i) { \
1.65 millert 360: case KERN_FILE_TEXT: \
1.1 deraadt 361: printf(" text"); \
362: break; \
1.65 millert 363: case KERN_FILE_CDIR: \
1.1 deraadt 364: printf(" wd"); \
365: break; \
1.65 millert 366: case KERN_FILE_RDIR: \
1.1 deraadt 367: printf(" root"); \
368: break; \
1.65 millert 369: case KERN_FILE_TRACE: \
1.1 deraadt 370: printf(" tr"); \
371: break; \
372: default: \
373: printf(" %4d", i); \
374: break; \
1.34 deraadt 375: } \
376: } while (0)
1.1 deraadt 377:
378: /*
379: * print open files attributed to this process
380: */
381: void
1.76 guenther 382: fstat_dofile(struct kinfo_file *kf)
1.1 deraadt 383: {
1.98 martijn 384: int i;
1.1 deraadt 385:
1.65 millert 386: Uname = user_from_uid(kf->p_uid, 0);
387: procuid = &kf->p_uid;
388: Pid = kf->p_pid;
389: Comm = kf->p_comm;
1.98 martijn 390:
391: for (i = 0; i < nfilter; i++) {
392: if (filter[i].what == KERN_FILE_BYPID) {
393: if (filter[i].arg == Pid)
394: break;
395: } else if (filter[i].arg == *procuid) {
396: break;
397: }
398: }
399: if (i == nfilter && nfilter != 0)
400: return;
1.56 mickey 401:
1.65 millert 402: switch (kf->f_type) {
403: case DTYPE_VNODE:
404: vtrans(kf);
405: break;
406: case DTYPE_SOCKET:
1.101 millert 407: socktrans(kf);
1.65 millert 408: break;
409: case DTYPE_PIPE:
1.67 miod 410: if (checkfile == 0)
411: pipetrans(kf);
1.65 millert 412: break;
413: case DTYPE_KQUEUE:
1.67 miod 414: if (checkfile == 0)
415: kqueuetrans(kf);
1.65 millert 416: break;
417: default:
418: if (vflg) {
419: warnx("unknown file type %d for file %d of pid %ld",
420: kf->f_type, kf->fd_fd, (long)Pid);
1.1 deraadt 421: }
1.65 millert 422: break;
1.1 deraadt 423: }
424: }
425:
426: void
1.76 guenther 427: vtrans(struct kinfo_file *kf)
1.1 deraadt 428: {
1.65 millert 429: const char *badtype = NULL;
1.90 deraadt 430: char rwep[5], mode[12];
1.65 millert 431: char *filename = NULL;
432:
433: if (kf->v_type == VNON)
1.1 deraadt 434: badtype = "none";
1.65 millert 435: else if (kf->v_type == VBAD)
1.1 deraadt 436: badtype = "bad";
1.65 millert 437: else if (kf->v_tag == VT_NON && !(kf->v_flag & VCLONE))
438: badtype = "none"; /* not a clone */
439:
1.1 deraadt 440: if (checkfile) {
441: int fsmatch = 0;
1.68 millert 442: struct filearg *fa;
1.1 deraadt 443:
444: if (badtype)
445: return;
1.68 millert 446: SLIST_FOREACH(fa, &fileargs, next) {
447: if (fa->dev == kf->va_fsid) {
1.1 deraadt 448: fsmatch = 1;
1.68 millert 449: if (fa->ino == kf->va_fileid) {
450: filename = fa->name;
1.1 deraadt 451: break;
452: }
453: }
1.65 millert 454: }
1.1 deraadt 455: if (fsmatch == 0 || (filename == NULL && fsflg == 0))
456: return;
457: }
1.65 millert 458: PREFIX(kf->fd_fd);
1.1 deraadt 459: if (badtype) {
1.53 mickey 460: (void)printf(" - - %10s -\n", badtype);
1.1 deraadt 461: return;
462: }
1.61 thib 463:
1.1 deraadt 464: if (nflg)
1.99 deraadt 465: (void)printf(" %2lu,%-2lu", (long)major(kf->va_fsid),
1.65 millert 466: (long)minor(kf->va_fsid));
467: else if (!(kf->v_flag & VCLONE))
468: (void)printf(" %-8s", kf->f_mntonname);
1.1 deraadt 469: else
1.73 mikeb 470: (void)printf(" clone ");
1.1 deraadt 471: if (nflg)
1.65 millert 472: (void)snprintf(mode, sizeof(mode), "%o", kf->va_mode);
1.1 deraadt 473: else
1.65 millert 474: strmode(kf->va_mode, mode);
1.89 guenther 475: printf(" %8llu%s %11s", kf->va_fileid,
476: kf->va_nlink == 0 ? "*" : " ",
477: mode);
1.90 deraadt 478: rwep[0] = '\0';
1.65 millert 479: if (kf->f_flag & FREAD)
1.90 deraadt 480: strlcat(rwep, "r", sizeof rwep);
1.65 millert 481: if (kf->f_flag & FWRITE)
1.90 deraadt 482: strlcat(rwep, "w", sizeof rwep);
483: if (kf->fd_ofileflags & UF_EXCLOSE)
484: strlcat(rwep, "e", sizeof rwep);
1.92 bluhm 485: if (kf->fd_ofileflags & UF_PLEDGED)
486: strlcat(rwep, "p", sizeof rwep);
1.90 deraadt 487: printf(" %4s", rwep);
1.65 millert 488: switch (kf->v_type) {
1.1 deraadt 489: case VBLK:
490: case VCHR: {
491: char *name;
492:
1.65 millert 493: if (nflg || ((name = devname(kf->va_rdev,
494: kf->v_type == VCHR ? S_IFCHR : S_IFBLK)) == NULL))
1.99 deraadt 495: printf(" %2u,%-3u", major(kf->va_rdev), minor(kf->va_rdev));
1.1 deraadt 496: else
1.28 hugh 497: printf(" %7s", name);
498: if (oflg)
499: printf(" ");
1.1 deraadt 500: break;
501: }
502: default:
1.65 millert 503: printf(" %8llu", kf->va_size);
1.62 deraadt 504: if (oflg) {
505: if (uid == 0 || uid == *procuid)
1.65 millert 506: printf(":%-8llu", kf->f_offset);
1.74 deraadt 507: else
1.62 deraadt 508: printf(":%-8s", "*");
509: }
510: }
511: if (sflg) {
512: if (uid == 0 || uid == *procuid) {
1.65 millert 513: printf(" %8llu %8llu",
1.74 deraadt 514: (kf->f_rxfer + kf->f_rwfer),
515: (kf->f_rbytes + kf->f_wbytes) / 1024);
1.62 deraadt 516: } else {
517: printf(" %8s %8s", "*", "*");
518: }
1.1 deraadt 519: }
520: if (filename && !fsflg)
1.28 hugh 521: printf(" %s", filename);
1.1 deraadt 522: putchar('\n');
523: }
524:
1.22 art 525: void
1.76 guenther 526: pipetrans(struct kinfo_file *kf)
1.22 art 527: {
528: void *maxaddr;
529:
1.65 millert 530: PREFIX(kf->fd_fd);
1.22 art 531:
532: printf(" ");
533:
534: /*
535: * We don't have enough space to fit both peer and own address, so
536: * we select the higher address so both ends of the pipe have the
537: * same visible addr. (it's the higher address because when the other
538: * end closes, it becomes 0)
539: */
1.80 deraadt 540: maxaddr = (void *)(uintptr_t)MAXIMUM(kf->f_data, kf->pipe_peer);
1.22 art 541:
1.74 deraadt 542: printf("pipe ");
543: hide(maxaddr);
1.75 bluhm 544: printf(" state: %s%s%s",
1.65 millert 545: (kf->pipe_state & PIPE_WANTR) ? "R" : "",
546: (kf->pipe_state & PIPE_WANTW) ? "W" : "",
547: (kf->pipe_state & PIPE_EOF) ? "E" : "");
1.56 mickey 548: if (sflg)
1.65 millert 549: printf("\t%8llu %8llu",
550: (kf->f_rxfer + kf->f_rwfer),
551: (kf->f_rbytes + kf->f_wbytes) / 1024);
1.56 mickey 552: printf("\n");
1.37 deraadt 553: return;
554: }
555:
556: void
1.76 guenther 557: kqueuetrans(struct kinfo_file *kf)
1.37 deraadt 558: {
1.65 millert 559: PREFIX(kf->fd_fd);
1.37 deraadt 560:
561: printf(" ");
562:
1.74 deraadt 563: printf("kqueue ");
564: hide((void *)(uintptr_t)kf->f_data);
1.103 ! visa 565: printf(" %d state: %s\n",
1.65 millert 566: kf->kq_count,
567: (kf->kq_state & KQ_SLEEP) ? "W" : "");
1.22 art 568: return;
1.1 deraadt 569: }
570:
1.26 itojun 571: const char *
1.40 deraadt 572: inet6_addrstr(struct in6_addr *p)
1.26 itojun 573: {
574: struct sockaddr_in6 sin6;
575: static char hbuf[NI_MAXHOST];
1.50 itojun 576: const int niflags = NI_NUMERICHOST;
1.26 itojun 577:
578: memset(&sin6, 0, sizeof(sin6));
579: sin6.sin6_family = AF_INET6;
580: sin6.sin6_len = sizeof(struct sockaddr_in6);
581: sin6.sin6_addr = *p;
582: if (IN6_IS_ADDR_LINKLOCAL(p) &&
583: *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) {
584: sin6.sin6_scope_id =
1.38 deraadt 585: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
1.26 itojun 586: sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0;
587: }
588:
589: if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
1.38 deraadt 590: hbuf, sizeof(hbuf), NULL, 0, niflags))
1.26 itojun 591: return "invalid";
592:
593: return hbuf;
594: }
595:
1.1 deraadt 596: void
1.76 guenther 597: splice_insert(char type, u_int64_t ptr, struct kinfo_file *data)
1.72 guenther 598: {
599: ENTRY entry, *found;
600:
1.74 deraadt 601: if (asprintf(&entry.key, "%c%llx", type, hideroot ? 0 : ptr) == -1)
1.72 guenther 602: err(1, NULL);
603: entry.data = data;
604: if ((found = hsearch(entry, ENTER)) == NULL)
605: err(1, "hsearch");
606: /* if it's ambiguous, set the data to NULL */
607: if (found->data != data)
608: found->data = NULL;
609: }
610:
1.76 guenther 611: struct kinfo_file *
1.72 guenther 612: splice_find(char type, u_int64_t ptr)
613: {
614: ENTRY entry, *found;
615: char buf[20];
616:
1.74 deraadt 617: snprintf(buf, sizeof(buf), "%c%llx", type, hideroot ? 0 : ptr);
1.72 guenther 618: entry.key = buf;
619: found = hsearch(entry, FIND);
620: return (found != NULL ? found->data : NULL);
621: }
622:
623: void
1.76 guenther 624: find_splices(struct kinfo_file *kf, int cnt)
1.72 guenther 625: {
626: int i, created;
627:
628: created = 0;
629: for (i = 0; i < cnt; i++) {
630: if (kf[i].f_type != DTYPE_SOCKET ||
631: (kf[i].so_splice == 0 && kf[i].so_splicelen != -1))
632: continue;
633: if (created++ == 0) {
634: if (hcreate(1000) == 0)
635: err(1, "hcreate");
636: }
637: splice_insert('>', kf[i].f_data, &kf[i]);
638: if (kf[i].so_splice != 0)
639: splice_insert('<', kf[i].so_splice, &kf[i]);
640: }
641: }
642:
643: void
1.76 guenther 644: print_inet_details(struct kinfo_file *kf)
1.72 guenther 645: {
646: struct in_addr laddr, faddr;
647:
648: memcpy(&laddr, kf->inp_laddru, sizeof(laddr));
649: memcpy(&faddr, kf->inp_faddru, sizeof(faddr));
650: if (kf->so_protocol == IPPROTO_TCP) {
1.74 deraadt 651: printf(" ");
652: hide((void *)(uintptr_t)kf->inp_ppcb);
1.72 guenther 653: printf(" %s:%d", laddr.s_addr == INADDR_ANY ? "*" :
654: inet_ntoa(laddr), ntohs(kf->inp_lport));
655: if (kf->inp_fport) {
656: if (kf->so_state & SS_CONNECTOUT)
657: printf(" --> ");
658: else
659: printf(" <-- ");
660: printf("%s:%d",
661: faddr.s_addr == INADDR_ANY ? "*" :
662: inet_ntoa(faddr), ntohs(kf->inp_fport));
663: }
664: } else if (kf->so_protocol == IPPROTO_UDP) {
665: printf(" %s:%d", laddr.s_addr == INADDR_ANY ? "*" :
666: inet_ntoa(laddr), ntohs(kf->inp_lport));
667: if (kf->inp_fport) {
668: printf(" <-> %s:%d",
669: faddr.s_addr == INADDR_ANY ? "*" :
670: inet_ntoa(faddr), ntohs(kf->inp_fport));
671: }
1.74 deraadt 672: } else if (kf->so_pcb) {
673: printf(" ");
674: hide((void *)(uintptr_t)kf->so_pcb);
675: }
1.72 guenther 676: }
677:
678: void
1.76 guenther 679: print_inet6_details(struct kinfo_file *kf)
1.72 guenther 680: {
681: char xaddrbuf[NI_MAXHOST + 2];
682: struct in6_addr laddr6, faddr6;
683:
684: memcpy(&laddr6, kf->inp_laddru, sizeof(laddr6));
685: memcpy(&faddr6, kf->inp_faddru, sizeof(faddr6));
686: if (kf->so_protocol == IPPROTO_TCP) {
1.74 deraadt 687: printf(" ");
688: hide((void *)(uintptr_t)kf->inp_ppcb);
1.72 guenther 689: snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]",
690: inet6_addrstr(&laddr6));
691: printf(" %s:%d",
692: IN6_IS_ADDR_UNSPECIFIED(&laddr6) ? "*" :
693: xaddrbuf, ntohs(kf->inp_lport));
694: if (kf->inp_fport) {
695: if (kf->so_state & SS_CONNECTOUT)
696: printf(" --> ");
697: else
698: printf(" <-- ");
699: snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]",
700: inet6_addrstr(&faddr6));
701: printf("%s:%d",
702: IN6_IS_ADDR_UNSPECIFIED(&faddr6) ? "*" :
703: xaddrbuf, ntohs(kf->inp_fport));
704: }
705: } else if (kf->so_protocol == IPPROTO_UDP) {
706: snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]",
707: inet6_addrstr(&laddr6));
708: printf(" %s:%d",
709: IN6_IS_ADDR_UNSPECIFIED(&laddr6) ? "*" :
710: xaddrbuf, ntohs(kf->inp_lport));
711: if (kf->inp_fport) {
712: snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]",
713: inet6_addrstr(&faddr6));
714: printf(" <-> %s:%d",
715: IN6_IS_ADDR_UNSPECIFIED(&faddr6) ? "*" :
716: xaddrbuf, ntohs(kf->inp_fport));
717: }
1.74 deraadt 718: } else if (kf->so_pcb) {
719: printf(" ");
720: hide((void *)(uintptr_t)kf->so_pcb);
721: }
1.72 guenther 722: }
723:
724: void
1.76 guenther 725: print_sock_details(struct kinfo_file *kf)
1.72 guenther 726: {
727: if (kf->so_family == AF_INET)
728: print_inet_details(kf);
729: else if (kf->so_family == AF_INET6)
730: print_inet6_details(kf);
731: }
732:
733: void
1.76 guenther 734: socktrans(struct kinfo_file *kf)
1.1 deraadt 735: {
736: static char *stypename[] = {
737: "unused", /* 0 */
1.38 deraadt 738: "stream", /* 1 */
1.1 deraadt 739: "dgram", /* 2 */
740: "raw", /* 3 */
741: "rdm", /* 4 */
742: "seqpak" /* 5 */
743: };
744: #define STYPEMAX 5
1.66 chl 745: char *stype, stypebuf[24];
1.1 deraadt 746:
1.101 millert 747: if (checkfile) {
748: struct filearg *fa;
749:
750: if (kf->so_type != AF_UNIX)
751: return;
752: SLIST_FOREACH(fa, &fileargs, next) {
753: if (fa->dev != 0)
754: continue;
755: if (strcmp(kf->unp_path, fa->name) == 0)
756: break;
757: }
758: if (fa == NULL)
759: return;
760: }
761:
1.65 millert 762: PREFIX(kf->fd_fd);
1.1 deraadt 763:
1.65 millert 764: if (kf->so_type > STYPEMAX) {
765: snprintf(stypebuf, sizeof(stypebuf), "?%d", kf->so_type);
766: stype = stypebuf;
767: } else {
768: stype = stypename[kf->so_type];
1.1 deraadt 769: }
770:
1.34 deraadt 771: /*
1.1 deraadt 772: * protocol specific formatting
773: *
774: * Try to find interesting things to print. For tcp, the interesting
775: * thing is the address of the tcpcb, for udp and others, just the
776: * inpcb (socket pcb). For unix domain, its the address of the socket
777: * pcb and the address of the connected pcb (if connected). Otherwise
778: * just print the protocol number and address of the socket itself.
779: * The idea is not to duplicate netstat, but to make available enough
780: * information for further analysis.
781: */
1.65 millert 782: switch (kf->so_family) {
1.1 deraadt 783: case AF_INET:
1.65 millert 784: printf("* internet %s", stype);
785: getinetproto(kf->so_protocol);
1.72 guenther 786: print_inet_details(kf);
1.93 sthen 787: if (kf->inp_rtableid)
788: printf(" rtable %u", kf->inp_rtableid);
1.1 deraadt 789: break;
1.26 itojun 790: case AF_INET6:
1.65 millert 791: printf("* internet6 %s", stype);
792: getinetproto(kf->so_protocol);
1.72 guenther 793: print_inet6_details(kf);
1.93 sthen 794: if (kf->inp_rtableid)
795: printf(" rtable %u", kf->inp_rtableid);
1.26 itojun 796: break;
1.1 deraadt 797: case AF_UNIX:
798: /* print address of pcb and connected pcb */
1.65 millert 799: printf("* unix %s", stype);
800: if (kf->so_pcb) {
1.74 deraadt 801: printf(" ");
802: hide((void *)(uintptr_t)kf->so_pcb);
1.65 millert 803: if (kf->unp_conn) {
1.1 deraadt 804: char shoconn[4], *cp;
805:
806: cp = shoconn;
1.65 millert 807: if (!(kf->so_state & SS_CANTRCVMORE))
1.1 deraadt 808: *cp++ = '<';
809: *cp++ = '-';
1.65 millert 810: if (!(kf->so_state & SS_CANTSENDMORE))
1.1 deraadt 811: *cp++ = '>';
812: *cp = '\0';
1.74 deraadt 813: printf(" %s ", shoconn);
814: hide((void *)(uintptr_t)kf->unp_conn);
1.1 deraadt 815: }
816: }
1.100 millert 817: if (kf->unp_path[0] != '\0')
818: printf(" %s", kf->unp_path);
1.1 deraadt 819: break;
1.65 millert 820: case AF_MPLS:
821: /* print protocol number and socket address */
822: printf("* mpls %s", stype);
1.74 deraadt 823: printf(" %d ", kf->so_protocol);
824: hide((void *)(uintptr_t)kf->f_data);
1.65 millert 825: break;
826: case AF_ROUTE:
827: /* print protocol number and socket address */
828: printf("* route %s", stype);
1.96 dlg 829: printf(" %d ", kf->so_protocol);
830: hide((void *)(uintptr_t)kf->f_data);
831: break;
832: case AF_KEY:
833: printf("* pfkey %s", stype);
1.74 deraadt 834: printf(" %d ", kf->so_protocol);
835: hide((void *)(uintptr_t)kf->f_data);
1.65 millert 836: break;
1.1 deraadt 837: default:
838: /* print protocol number and socket address */
1.65 millert 839: printf("* %d %s", kf->so_family, stype);
1.74 deraadt 840: printf(" %d ", kf->so_protocol);
841: hide((void *)(uintptr_t)kf->f_data);
1.72 guenther 842: }
843: if (kf->so_splice != 0 || kf->so_splicelen == -1) {
1.76 guenther 844: struct kinfo_file *from, *to;
1.72 guenther 845:
846: from = splice_find('<', kf->f_data);
847: to = NULL;
848: if (kf->so_splice != 0)
849: to = splice_find('>', kf->so_splice);
850:
851: if (to != NULL && from == to) {
852: printf(" <==>");
853: print_sock_details(to);
854: } else if (kf->so_splice != 0) {
855: printf(" ==>");
856: if (to != NULL)
857: print_sock_details(to);
858: } else if (kf->so_splicelen == -1) {
859: printf(" <==");
860: if (from != NULL)
861: print_sock_details(from);
862: }
1.1 deraadt 863: }
1.56 mickey 864: if (sflg)
1.65 millert 865: printf("\t%8llu %8llu",
866: (kf->f_rxfer + kf->f_rwfer),
867: (kf->f_rbytes + kf->f_wbytes) / 1024);
1.1 deraadt 868: printf("\n");
869: }
870:
871: /*
872: * getinetproto --
873: * print name of protocol number
874: */
875: void
1.85 mestre 876: getinetproto(int number)
1.1 deraadt 877: {
1.24 deraadt 878: static int isopen;
1.32 mpech 879: struct protoent *pe;
1.1 deraadt 880:
1.24 deraadt 881: if (!isopen)
882: setprotoent(++isopen);
883: if ((pe = getprotobynumber(number)) != NULL)
884: printf(" %s", pe->p_name);
885: else
1.1 deraadt 886: printf(" %d", number);
887: }
888:
1.11 millert 889: int
1.40 deraadt 890: getfname(char *filename)
1.1 deraadt 891: {
1.68 millert 892: static struct statfs *mntbuf;
893: static int nmounts;
894: int i;
895: struct stat sb;
896: struct filearg *cur;
1.1 deraadt 897:
1.68 millert 898: if (stat(filename, &sb)) {
1.27 millert 899: warn("%s", filename);
1.68 millert 900: return (0);
1.1 deraadt 901: }
902:
1.68 millert 903: /*
904: * POSIX specifies "For block special devices, all processes using any
905: * file on that device are listed". However the -f flag description
906: * states "The report shall be only for the named files", so we only
907: * look up a block device if the -f flag has not be specified.
908: */
909: if (fuser && !fsflg && S_ISBLK(sb.st_mode)) {
910: if (mntbuf == NULL) {
911: nmounts = getmntinfo(&mntbuf, MNT_NOWAIT);
912: if (nmounts == -1)
913: err(1, "getmntinfo");
914: }
915: for (i = 0; i < nmounts; i++) {
916: if (!strcmp(mntbuf[i].f_mntfromname, filename)) {
917: if (stat(mntbuf[i].f_mntonname, &sb) == -1) {
918: warn("%s", filename);
919: return (0);
920: }
921: cflg = 1;
922: break;
923: }
924: }
925: }
1.101 millert 926: if (!fuser && S_ISSOCK(sb.st_mode)) {
927: char *newname = realpath(filename, NULL);
928: if (newname != NULL)
929: filename = newname;
930: }
1.68 millert 931:
1.101 millert 932: if ((cur = calloc(1, sizeof(*cur))) == NULL)
1.68 millert 933: err(1, NULL);
934:
1.101 millert 935: if (!S_ISSOCK(sb.st_mode)) {
936: cur->ino = sb.st_ino;
937: cur->dev = sb.st_dev & 0xffff;
938: }
1.1 deraadt 939: cur->name = filename;
1.68 millert 940: TAILQ_INIT(&cur->fusers);
941: SLIST_INSERT_HEAD(&fileargs, cur, next);
942: return (1);
943: }
944:
945: int
946: signame_to_signum(char *sig)
947: {
948: int n;
949: const char *errstr = NULL;
950:
951: if (isdigit((unsigned char)*sig)) {
952: n = strtonum(sig, 0, NSIG - 1, &errstr);
953: return (errstr ? -1 : n);
954: }
955: if (!strncasecmp(sig, "sig", 3))
956: sig += 3;
957: for (n = 1; n < NSIG; n++) {
958: if (!strcasecmp(sys_signame[n], sig))
959: return (n);
960: }
961: return (-1);
1.1 deraadt 962: }
963:
964: void
1.40 deraadt 965: usage(void)
1.1 deraadt 966: {
1.68 millert 967: if (fuser) {
968: fprintf(stderr, "usage: fuser [-cfku] [-M core] "
969: "[-N system] [-s signal] file ...\n");
970: } else {
971: fprintf(stderr, "usage: fstat [-fnosv] [-M core] [-N system] "
972: "[-p pid] [-u user] [file ...]\n");
973: }
1.1 deraadt 974: exit(1);
975: }
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