Annotation of src/usr.bin/fstat/fstat.c, Revision 1.98
1.98 ! martijn 1: /* $OpenBSD: fstat.c,v 1.97 2019/01/25 00:19:26 millert 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: {
1.32 mpech 145: struct passwd *passwd;
1.76 guenther 146: struct kinfo_file *kf, *kflast;
1.98 ! martijn 147: int ch;
1.68 millert 148: char *memf, *nlistf, *optstr;
1.2 niklas 149: char buf[_POSIX2_LINE_MAX];
1.58 tedu 150: const char *errstr;
1.65 millert 151: int cnt, flags;
1.1 deraadt 152:
1.74 deraadt 153: hideroot = getuid();
154:
1.1 deraadt 155: nlistf = memf = NULL;
1.28 hugh 156: oflg = 0;
1.68 millert 157:
158: /* are we fstat(1) or fuser(1)? */
159: if (strcmp(__progname, "fuser") == 0) {
160: fuser = 1;
161: optstr = "cfks:uM:N:";
162: } else {
163: fuser = 0;
164: optstr = "fnop:su:vN:M:";
165: }
166:
1.95 millert 167: /* Keep passwd file open for faster lookups. */
168: setpassent(1);
169:
1.68 millert 170: /*
171: * fuser and fstat share three flags: -f, -s and -u. In both cases
172: * -f is a boolean, but for -u fstat wants an argument while fuser
173: * does not and for -s fuser wants an argument whereas fstat does not.
174: */
175: while ((ch = getopt(argc, argv, optstr)) != -1)
1.60 sobrado 176: switch ((char)ch) {
1.68 millert 177: case 'c':
178: if (fsflg)
179: usage();
180: cflg = 1;
181: break;
1.1 deraadt 182: case 'f':
1.68 millert 183: if (cflg)
184: usage();
1.1 deraadt 185: fsflg = 1;
186: break;
1.68 millert 187: case 'k':
188: sflg = 1;
189: signo = SIGKILL;
190: break;
1.1 deraadt 191: case 'M':
192: memf = optarg;
193: break;
194: case 'N':
195: nlistf = optarg;
196: break;
197: case 'n':
198: nflg = 1;
199: break;
1.28 hugh 200: case 'o':
201: oflg = 1;
202: break;
1.1 deraadt 203: case 'p':
1.98 ! martijn 204: if ((filter = recallocarray(filter, nfilter, nfilter + 1,
! 205: sizeof(*filter))) == NULL)
! 206: err(1, NULL);
! 207: filter[nfilter].arg = strtonum(optarg, 0, INT_MAX,
! 208: &errstr);
1.58 tedu 209: if (errstr != NULL) {
1.74 deraadt 210: warnx("-p requires a process id, %s: %s",
1.58 tedu 211: errstr, optarg);
1.1 deraadt 212: usage();
213: }
1.98 ! martijn 214: filter[nfilter].what = KERN_FILE_BYPID;
! 215: nfilter++;
1.1 deraadt 216: break;
1.56 mickey 217: case 's':
218: sflg = 1;
1.68 millert 219: if (fuser) {
220: signo = signame_to_signum(optarg);
221: if (signo == -1) {
222: warnx("invalid signal %s", optarg);
223: usage();
224: }
225: }
1.56 mickey 226: break;
1.1 deraadt 227: case 'u':
1.98 ! martijn 228: uflg = 1;
1.68 millert 229: if (!fuser) {
1.95 millert 230: uid_t uid;
231:
232: if (uid_from_user(optarg, &uid) == -1) {
233: uid = strtonum(optarg, 0, UID_MAX,
1.69 nicm 234: &errstr);
235: if (errstr != NULL) {
236: errx(1, "%s: unknown uid",
237: optarg);
238: }
1.95 millert 239: }
1.98 ! martijn 240: if ((filter = recallocarray(filter, nfilter,
! 241: nfilter + 1, sizeof(*filter))) == NULL)
! 242: err(1, NULL);
! 243: filter[nfilter].arg = uid;
! 244: filter[nfilter].what = KERN_FILE_BYUID;
! 245: nfilter++;
1.68 millert 246: }
1.1 deraadt 247: break;
248: case 'v':
249: vflg = 1;
250: break;
251: default:
252: usage();
253: }
254:
1.41 deraadt 255: /*
1.62 deraadt 256: * get the uid, for oflg and sflg
257: */
258: uid = getuid();
259:
260: /*
1.65 millert 261: * Use sysctl unless inspecting an alternate kernel.
1.41 deraadt 262: */
1.65 millert 263: if (nlistf == NULL || memf == NULL)
264: flags = KVM_NO_FILES;
265: else
266: flags = O_RDONLY;
1.41 deraadt 267:
1.65 millert 268: if ((kd = kvm_openfiles(nlistf, memf, NULL, flags, buf)) == NULL)
1.41 deraadt 269: errx(1, "%s", buf);
270:
1.1 deraadt 271: if (*(argv += optind)) {
272: for (; *argv; ++argv) {
273: if (getfname(*argv))
274: checkfile = 1;
275: }
1.68 millert 276: /* file(s) specified, but none accessible */
277: if (!checkfile)
1.1 deraadt 278: exit(1);
1.68 millert 279: } else if (fuser)
280: usage();
1.1 deraadt 281:
1.68 millert 282: if (!fuser && fsflg && !checkfile) {
283: /* fstat -f with no files means use wd */
1.1 deraadt 284: if (getfname(".") == 0)
285: exit(1);
286: checkfile = 1;
287: }
1.16 deraadt 288:
1.98 ! martijn 289: if (nfilter == 1) {
! 290: if ((kf = kvm_getfiles(kd, filter[0].what, filter[0].arg,
! 291: sizeof(*kf), &cnt)) == NULL)
! 292: errx(1, "%s", kvm_geterr(kd));
! 293: } else {
! 294: if ((kf = kvm_getfiles(kd, KERN_FILE_BYPID, -1, sizeof(*kf),
! 295: &cnt)) == NULL)
! 296: errx(1, "%s", kvm_geterr(kd));
! 297: }
1.81 deraadt 298:
1.82 deraadt 299: if (fuser) {
1.86 semarie 300: /*
301: * fuser
302: * uflg: need "getpw"
303: * sflg: need "proc" (might call kill(2))
304: */
305: if (uflg && sflg) {
306: if (pledge("stdio rpath getpw proc", NULL) == -1)
307: err(1, "pledge");
308: } else if (uflg) {
309: if (pledge("stdio rpath getpw", NULL) == -1)
310: err(1, "pledge");
311: } else if (sflg) {
1.82 deraadt 312: if (pledge("stdio rpath proc", NULL) == -1)
313: err(1, "pledge");
314: } else {
315: if (pledge("stdio rpath", NULL) == -1)
316: err(1, "pledge");
317: }
318: } else {
1.86 semarie 319: /* fstat */
1.84 deraadt 320: if (pledge("stdio rpath getpw", NULL) == -1)
1.82 deraadt 321: err(1, "pledge");
322: }
1.68 millert 323:
1.72 guenther 324: find_splices(kf, cnt);
1.68 millert 325: if (!fuser)
326: fstat_header();
327: for (kflast = &kf[cnt]; kf < kflast; ++kf) {
328: if (fuser)
329: fuser_check(kf);
330: else
331: fstat_dofile(kf);
332: }
333: if (fuser)
334: fuser_run();
335:
336: exit(0);
337: }
338:
339: void
340: fstat_header(void)
341: {
1.1 deraadt 342: if (nflg)
343: printf("%s",
1.91 deraadt 344: "USER CMD PID FD DEV INUM MODE R/W SZ|DV");
1.1 deraadt 345: else
346: printf("%s",
1.91 deraadt 347: "USER CMD PID FD MOUNT INUM MODE R/W SZ|DV");
1.28 hugh 348: if (oflg)
349: printf("%s", ":OFFSET ");
1.1 deraadt 350: if (checkfile && fsflg == 0)
1.56 mickey 351: printf(" NAME");
352: if (sflg)
353: printf(" XFERS KBYTES");
354: putchar('\n');
1.1 deraadt 355: }
356:
1.94 millert 357: const char *Uname, *Comm;
1.62 deraadt 358: uid_t *procuid;
1.14 deraadt 359: pid_t Pid;
1.1 deraadt 360:
1.34 deraadt 361: #define PREFIX(i) do { \
1.39 mpech 362: printf("%-8.8s %-10s %5ld", Uname, Comm, (long)Pid); \
1.60 sobrado 363: switch (i) { \
1.65 millert 364: case KERN_FILE_TEXT: \
1.1 deraadt 365: printf(" text"); \
366: break; \
1.65 millert 367: case KERN_FILE_CDIR: \
1.1 deraadt 368: printf(" wd"); \
369: break; \
1.65 millert 370: case KERN_FILE_RDIR: \
1.1 deraadt 371: printf(" root"); \
372: break; \
1.65 millert 373: case KERN_FILE_TRACE: \
1.1 deraadt 374: printf(" tr"); \
375: break; \
376: default: \
377: printf(" %4d", i); \
378: break; \
1.34 deraadt 379: } \
380: } while (0)
1.1 deraadt 381:
382: /*
383: * print open files attributed to this process
384: */
385: void
1.76 guenther 386: fstat_dofile(struct kinfo_file *kf)
1.1 deraadt 387: {
1.98 ! martijn 388: int i;
1.1 deraadt 389:
1.65 millert 390: Uname = user_from_uid(kf->p_uid, 0);
391: procuid = &kf->p_uid;
392: Pid = kf->p_pid;
393: Comm = kf->p_comm;
1.98 ! martijn 394:
! 395: for (i = 0; i < nfilter; i++) {
! 396: if (filter[i].what == KERN_FILE_BYPID) {
! 397: if (filter[i].arg == Pid)
! 398: break;
! 399: } else if (filter[i].arg == *procuid) {
! 400: break;
! 401: }
! 402: }
! 403: if (i == nfilter && nfilter != 0)
! 404: return;
1.56 mickey 405:
1.65 millert 406: switch (kf->f_type) {
407: case DTYPE_VNODE:
408: vtrans(kf);
409: break;
410: case DTYPE_SOCKET:
1.67 miod 411: if (checkfile == 0)
412: socktrans(kf);
1.65 millert 413: break;
414: case DTYPE_PIPE:
1.67 miod 415: if (checkfile == 0)
416: pipetrans(kf);
1.65 millert 417: break;
418: case DTYPE_KQUEUE:
1.67 miod 419: if (checkfile == 0)
420: kqueuetrans(kf);
1.65 millert 421: break;
422: default:
423: if (vflg) {
424: warnx("unknown file type %d for file %d of pid %ld",
425: kf->f_type, kf->fd_fd, (long)Pid);
1.1 deraadt 426: }
1.65 millert 427: break;
1.1 deraadt 428: }
429: }
430:
431: void
1.76 guenther 432: vtrans(struct kinfo_file *kf)
1.1 deraadt 433: {
1.65 millert 434: const char *badtype = NULL;
1.90 deraadt 435: char rwep[5], mode[12];
1.65 millert 436: char *filename = NULL;
437:
438: if (kf->v_type == VNON)
1.1 deraadt 439: badtype = "none";
1.65 millert 440: else if (kf->v_type == VBAD)
1.1 deraadt 441: badtype = "bad";
1.65 millert 442: else if (kf->v_tag == VT_NON && !(kf->v_flag & VCLONE))
443: badtype = "none"; /* not a clone */
444:
1.1 deraadt 445: if (checkfile) {
446: int fsmatch = 0;
1.68 millert 447: struct filearg *fa;
1.1 deraadt 448:
449: if (badtype)
450: return;
1.68 millert 451: SLIST_FOREACH(fa, &fileargs, next) {
452: if (fa->dev == kf->va_fsid) {
1.1 deraadt 453: fsmatch = 1;
1.68 millert 454: if (fa->ino == kf->va_fileid) {
455: filename = fa->name;
1.1 deraadt 456: break;
457: }
458: }
1.65 millert 459: }
1.1 deraadt 460: if (fsmatch == 0 || (filename == NULL && fsflg == 0))
461: return;
462: }
1.65 millert 463: PREFIX(kf->fd_fd);
1.1 deraadt 464: if (badtype) {
1.53 mickey 465: (void)printf(" - - %10s -\n", badtype);
1.1 deraadt 466: return;
467: }
1.61 thib 468:
1.1 deraadt 469: if (nflg)
1.65 millert 470: (void)printf(" %2ld,%-2ld", (long)major(kf->va_fsid),
471: (long)minor(kf->va_fsid));
472: else if (!(kf->v_flag & VCLONE))
473: (void)printf(" %-8s", kf->f_mntonname);
1.1 deraadt 474: else
1.73 mikeb 475: (void)printf(" clone ");
1.1 deraadt 476: if (nflg)
1.65 millert 477: (void)snprintf(mode, sizeof(mode), "%o", kf->va_mode);
1.1 deraadt 478: else
1.65 millert 479: strmode(kf->va_mode, mode);
1.89 guenther 480: printf(" %8llu%s %11s", kf->va_fileid,
481: kf->va_nlink == 0 ? "*" : " ",
482: mode);
1.90 deraadt 483: rwep[0] = '\0';
1.65 millert 484: if (kf->f_flag & FREAD)
1.90 deraadt 485: strlcat(rwep, "r", sizeof rwep);
1.65 millert 486: if (kf->f_flag & FWRITE)
1.90 deraadt 487: strlcat(rwep, "w", sizeof rwep);
488: if (kf->fd_ofileflags & UF_EXCLOSE)
489: strlcat(rwep, "e", sizeof rwep);
1.92 bluhm 490: if (kf->fd_ofileflags & UF_PLEDGED)
491: strlcat(rwep, "p", sizeof rwep);
1.90 deraadt 492: printf(" %4s", rwep);
1.65 millert 493: switch (kf->v_type) {
1.1 deraadt 494: case VBLK:
495: case VCHR: {
496: char *name;
497:
1.65 millert 498: if (nflg || ((name = devname(kf->va_rdev,
499: kf->v_type == VCHR ? S_IFCHR : S_IFBLK)) == NULL))
500: printf(" %2d,%-3d", major(kf->va_rdev), minor(kf->va_rdev));
1.1 deraadt 501: else
1.28 hugh 502: printf(" %7s", name);
503: if (oflg)
504: printf(" ");
1.1 deraadt 505: break;
506: }
507: default:
1.65 millert 508: printf(" %8llu", kf->va_size);
1.62 deraadt 509: if (oflg) {
510: if (uid == 0 || uid == *procuid)
1.65 millert 511: printf(":%-8llu", kf->f_offset);
1.74 deraadt 512: else
1.62 deraadt 513: printf(":%-8s", "*");
514: }
515: }
516: if (sflg) {
517: if (uid == 0 || uid == *procuid) {
1.65 millert 518: printf(" %8llu %8llu",
1.74 deraadt 519: (kf->f_rxfer + kf->f_rwfer),
520: (kf->f_rbytes + kf->f_wbytes) / 1024);
1.62 deraadt 521: } else {
522: printf(" %8s %8s", "*", "*");
523: }
1.1 deraadt 524: }
525: if (filename && !fsflg)
1.28 hugh 526: printf(" %s", filename);
1.1 deraadt 527: putchar('\n');
528: }
529:
1.22 art 530: void
1.76 guenther 531: pipetrans(struct kinfo_file *kf)
1.22 art 532: {
533: void *maxaddr;
534:
1.65 millert 535: PREFIX(kf->fd_fd);
1.22 art 536:
537: printf(" ");
538:
539: /*
540: * We don't have enough space to fit both peer and own address, so
541: * we select the higher address so both ends of the pipe have the
542: * same visible addr. (it's the higher address because when the other
543: * end closes, it becomes 0)
544: */
1.80 deraadt 545: maxaddr = (void *)(uintptr_t)MAXIMUM(kf->f_data, kf->pipe_peer);
1.22 art 546:
1.74 deraadt 547: printf("pipe ");
548: hide(maxaddr);
1.75 bluhm 549: printf(" state: %s%s%s",
1.65 millert 550: (kf->pipe_state & PIPE_WANTR) ? "R" : "",
551: (kf->pipe_state & PIPE_WANTW) ? "W" : "",
552: (kf->pipe_state & PIPE_EOF) ? "E" : "");
1.56 mickey 553: if (sflg)
1.65 millert 554: printf("\t%8llu %8llu",
555: (kf->f_rxfer + kf->f_rwfer),
556: (kf->f_rbytes + kf->f_wbytes) / 1024);
1.56 mickey 557: printf("\n");
1.37 deraadt 558: return;
559: }
560:
561: void
1.76 guenther 562: kqueuetrans(struct kinfo_file *kf)
1.37 deraadt 563: {
1.65 millert 564: PREFIX(kf->fd_fd);
1.37 deraadt 565:
566: printf(" ");
567:
1.74 deraadt 568: printf("kqueue ");
569: hide((void *)(uintptr_t)kf->f_data);
570: printf(" %d state: %s%s\n",
1.65 millert 571: kf->kq_count,
572: (kf->kq_state & KQ_SEL) ? "S" : "",
573: (kf->kq_state & KQ_SLEEP) ? "W" : "");
1.22 art 574: return;
1.1 deraadt 575: }
576:
1.26 itojun 577: const char *
1.40 deraadt 578: inet6_addrstr(struct in6_addr *p)
1.26 itojun 579: {
580: struct sockaddr_in6 sin6;
581: static char hbuf[NI_MAXHOST];
1.50 itojun 582: const int niflags = NI_NUMERICHOST;
1.26 itojun 583:
584: memset(&sin6, 0, sizeof(sin6));
585: sin6.sin6_family = AF_INET6;
586: sin6.sin6_len = sizeof(struct sockaddr_in6);
587: sin6.sin6_addr = *p;
588: if (IN6_IS_ADDR_LINKLOCAL(p) &&
589: *(u_int16_t *)&sin6.sin6_addr.s6_addr[2] != 0) {
590: sin6.sin6_scope_id =
1.38 deraadt 591: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
1.26 itojun 592: sin6.sin6_addr.s6_addr[2] = sin6.sin6_addr.s6_addr[3] = 0;
593: }
594:
595: if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
1.38 deraadt 596: hbuf, sizeof(hbuf), NULL, 0, niflags))
1.26 itojun 597: return "invalid";
598:
599: return hbuf;
600: }
601:
1.1 deraadt 602: void
1.76 guenther 603: splice_insert(char type, u_int64_t ptr, struct kinfo_file *data)
1.72 guenther 604: {
605: ENTRY entry, *found;
606:
1.74 deraadt 607: if (asprintf(&entry.key, "%c%llx", type, hideroot ? 0 : ptr) == -1)
1.72 guenther 608: err(1, NULL);
609: entry.data = data;
610: if ((found = hsearch(entry, ENTER)) == NULL)
611: err(1, "hsearch");
612: /* if it's ambiguous, set the data to NULL */
613: if (found->data != data)
614: found->data = NULL;
615: }
616:
1.76 guenther 617: struct kinfo_file *
1.72 guenther 618: splice_find(char type, u_int64_t ptr)
619: {
620: ENTRY entry, *found;
621: char buf[20];
622:
1.74 deraadt 623: snprintf(buf, sizeof(buf), "%c%llx", type, hideroot ? 0 : ptr);
1.72 guenther 624: entry.key = buf;
625: found = hsearch(entry, FIND);
626: return (found != NULL ? found->data : NULL);
627: }
628:
629: void
1.76 guenther 630: find_splices(struct kinfo_file *kf, int cnt)
1.72 guenther 631: {
632: int i, created;
633:
634: created = 0;
635: for (i = 0; i < cnt; i++) {
636: if (kf[i].f_type != DTYPE_SOCKET ||
637: (kf[i].so_splice == 0 && kf[i].so_splicelen != -1))
638: continue;
639: if (created++ == 0) {
640: if (hcreate(1000) == 0)
641: err(1, "hcreate");
642: }
643: splice_insert('>', kf[i].f_data, &kf[i]);
644: if (kf[i].so_splice != 0)
645: splice_insert('<', kf[i].so_splice, &kf[i]);
646: }
647: }
648:
649: void
1.76 guenther 650: print_inet_details(struct kinfo_file *kf)
1.72 guenther 651: {
652: struct in_addr laddr, faddr;
653:
654: memcpy(&laddr, kf->inp_laddru, sizeof(laddr));
655: memcpy(&faddr, kf->inp_faddru, sizeof(faddr));
656: if (kf->so_protocol == IPPROTO_TCP) {
1.74 deraadt 657: printf(" ");
658: hide((void *)(uintptr_t)kf->inp_ppcb);
1.72 guenther 659: printf(" %s:%d", laddr.s_addr == INADDR_ANY ? "*" :
660: inet_ntoa(laddr), ntohs(kf->inp_lport));
661: if (kf->inp_fport) {
662: if (kf->so_state & SS_CONNECTOUT)
663: printf(" --> ");
664: else
665: printf(" <-- ");
666: printf("%s:%d",
667: faddr.s_addr == INADDR_ANY ? "*" :
668: inet_ntoa(faddr), ntohs(kf->inp_fport));
669: }
670: } else if (kf->so_protocol == IPPROTO_UDP) {
671: printf(" %s:%d", laddr.s_addr == INADDR_ANY ? "*" :
672: inet_ntoa(laddr), ntohs(kf->inp_lport));
673: if (kf->inp_fport) {
674: printf(" <-> %s:%d",
675: faddr.s_addr == INADDR_ANY ? "*" :
676: inet_ntoa(faddr), ntohs(kf->inp_fport));
677: }
1.74 deraadt 678: } else if (kf->so_pcb) {
679: printf(" ");
680: hide((void *)(uintptr_t)kf->so_pcb);
681: }
1.72 guenther 682: }
683:
684: void
1.76 guenther 685: print_inet6_details(struct kinfo_file *kf)
1.72 guenther 686: {
687: char xaddrbuf[NI_MAXHOST + 2];
688: struct in6_addr laddr6, faddr6;
689:
690: memcpy(&laddr6, kf->inp_laddru, sizeof(laddr6));
691: memcpy(&faddr6, kf->inp_faddru, sizeof(faddr6));
692: if (kf->so_protocol == IPPROTO_TCP) {
1.74 deraadt 693: printf(" ");
694: hide((void *)(uintptr_t)kf->inp_ppcb);
1.72 guenther 695: snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]",
696: inet6_addrstr(&laddr6));
697: printf(" %s:%d",
698: IN6_IS_ADDR_UNSPECIFIED(&laddr6) ? "*" :
699: xaddrbuf, ntohs(kf->inp_lport));
700: if (kf->inp_fport) {
701: if (kf->so_state & SS_CONNECTOUT)
702: printf(" --> ");
703: else
704: printf(" <-- ");
705: snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]",
706: inet6_addrstr(&faddr6));
707: printf("%s:%d",
708: IN6_IS_ADDR_UNSPECIFIED(&faddr6) ? "*" :
709: xaddrbuf, ntohs(kf->inp_fport));
710: }
711: } else if (kf->so_protocol == IPPROTO_UDP) {
712: snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]",
713: inet6_addrstr(&laddr6));
714: printf(" %s:%d",
715: IN6_IS_ADDR_UNSPECIFIED(&laddr6) ? "*" :
716: xaddrbuf, ntohs(kf->inp_lport));
717: if (kf->inp_fport) {
718: snprintf(xaddrbuf, sizeof(xaddrbuf), "[%s]",
719: inet6_addrstr(&faddr6));
720: printf(" <-> %s:%d",
721: IN6_IS_ADDR_UNSPECIFIED(&faddr6) ? "*" :
722: xaddrbuf, ntohs(kf->inp_fport));
723: }
1.74 deraadt 724: } else if (kf->so_pcb) {
725: printf(" ");
726: hide((void *)(uintptr_t)kf->so_pcb);
727: }
1.72 guenther 728: }
729:
730: void
1.76 guenther 731: print_sock_details(struct kinfo_file *kf)
1.72 guenther 732: {
733: if (kf->so_family == AF_INET)
734: print_inet_details(kf);
735: else if (kf->so_family == AF_INET6)
736: print_inet6_details(kf);
737: }
738:
739: void
1.76 guenther 740: socktrans(struct kinfo_file *kf)
1.1 deraadt 741: {
742: static char *stypename[] = {
743: "unused", /* 0 */
1.38 deraadt 744: "stream", /* 1 */
1.1 deraadt 745: "dgram", /* 2 */
746: "raw", /* 3 */
747: "rdm", /* 4 */
748: "seqpak" /* 5 */
749: };
750: #define STYPEMAX 5
1.66 chl 751: char *stype, stypebuf[24];
1.1 deraadt 752:
1.65 millert 753: PREFIX(kf->fd_fd);
1.1 deraadt 754:
1.65 millert 755: if (kf->so_type > STYPEMAX) {
756: snprintf(stypebuf, sizeof(stypebuf), "?%d", kf->so_type);
757: stype = stypebuf;
758: } else {
759: stype = stypename[kf->so_type];
1.1 deraadt 760: }
761:
1.34 deraadt 762: /*
1.1 deraadt 763: * protocol specific formatting
764: *
765: * Try to find interesting things to print. For tcp, the interesting
766: * thing is the address of the tcpcb, for udp and others, just the
767: * inpcb (socket pcb). For unix domain, its the address of the socket
768: * pcb and the address of the connected pcb (if connected). Otherwise
769: * just print the protocol number and address of the socket itself.
770: * The idea is not to duplicate netstat, but to make available enough
771: * information for further analysis.
772: */
1.65 millert 773: switch (kf->so_family) {
1.1 deraadt 774: case AF_INET:
1.65 millert 775: printf("* internet %s", stype);
776: getinetproto(kf->so_protocol);
1.72 guenther 777: print_inet_details(kf);
1.93 sthen 778: if (kf->inp_rtableid)
779: printf(" rtable %u", kf->inp_rtableid);
1.1 deraadt 780: break;
1.26 itojun 781: case AF_INET6:
1.65 millert 782: printf("* internet6 %s", stype);
783: getinetproto(kf->so_protocol);
1.72 guenther 784: print_inet6_details(kf);
1.93 sthen 785: if (kf->inp_rtableid)
786: printf(" rtable %u", kf->inp_rtableid);
1.26 itojun 787: break;
1.1 deraadt 788: case AF_UNIX:
789: /* print address of pcb and connected pcb */
1.65 millert 790: printf("* unix %s", stype);
791: if (kf->so_pcb) {
1.74 deraadt 792: printf(" ");
793: hide((void *)(uintptr_t)kf->so_pcb);
1.65 millert 794: if (kf->unp_conn) {
1.1 deraadt 795: char shoconn[4], *cp;
796:
797: cp = shoconn;
1.65 millert 798: if (!(kf->so_state & SS_CANTRCVMORE))
1.1 deraadt 799: *cp++ = '<';
800: *cp++ = '-';
1.65 millert 801: if (!(kf->so_state & SS_CANTSENDMORE))
1.1 deraadt 802: *cp++ = '>';
803: *cp = '\0';
1.74 deraadt 804: printf(" %s ", shoconn);
805: hide((void *)(uintptr_t)kf->unp_conn);
1.1 deraadt 806: }
807: }
808: break;
1.65 millert 809: case AF_MPLS:
810: /* print protocol number and socket address */
811: printf("* mpls %s", stype);
1.74 deraadt 812: printf(" %d ", kf->so_protocol);
813: hide((void *)(uintptr_t)kf->f_data);
1.65 millert 814: break;
815: case AF_ROUTE:
816: /* print protocol number and socket address */
817: printf("* route %s", stype);
1.96 dlg 818: printf(" %d ", kf->so_protocol);
819: hide((void *)(uintptr_t)kf->f_data);
820: break;
821: case AF_KEY:
822: printf("* pfkey %s", stype);
1.74 deraadt 823: printf(" %d ", kf->so_protocol);
824: hide((void *)(uintptr_t)kf->f_data);
1.65 millert 825: break;
1.1 deraadt 826: default:
827: /* print protocol number and socket address */
1.65 millert 828: printf("* %d %s", kf->so_family, stype);
1.74 deraadt 829: printf(" %d ", kf->so_protocol);
830: hide((void *)(uintptr_t)kf->f_data);
1.72 guenther 831: }
832: if (kf->so_splice != 0 || kf->so_splicelen == -1) {
1.76 guenther 833: struct kinfo_file *from, *to;
1.72 guenther 834:
835: from = splice_find('<', kf->f_data);
836: to = NULL;
837: if (kf->so_splice != 0)
838: to = splice_find('>', kf->so_splice);
839:
840: if (to != NULL && from == to) {
841: printf(" <==>");
842: print_sock_details(to);
843: } else if (kf->so_splice != 0) {
844: printf(" ==>");
845: if (to != NULL)
846: print_sock_details(to);
847: } else if (kf->so_splicelen == -1) {
848: printf(" <==");
849: if (from != NULL)
850: print_sock_details(from);
851: }
1.1 deraadt 852: }
1.56 mickey 853: if (sflg)
1.65 millert 854: printf("\t%8llu %8llu",
855: (kf->f_rxfer + kf->f_rwfer),
856: (kf->f_rbytes + kf->f_wbytes) / 1024);
1.1 deraadt 857: printf("\n");
858: }
859:
860: /*
861: * getinetproto --
862: * print name of protocol number
863: */
864: void
1.85 mestre 865: getinetproto(int number)
1.1 deraadt 866: {
1.24 deraadt 867: static int isopen;
1.32 mpech 868: struct protoent *pe;
1.1 deraadt 869:
1.24 deraadt 870: if (!isopen)
871: setprotoent(++isopen);
872: if ((pe = getprotobynumber(number)) != NULL)
873: printf(" %s", pe->p_name);
874: else
1.1 deraadt 875: printf(" %d", number);
876: }
877:
1.11 millert 878: int
1.40 deraadt 879: getfname(char *filename)
1.1 deraadt 880: {
1.68 millert 881: static struct statfs *mntbuf;
882: static int nmounts;
883: int i;
884: struct stat sb;
885: struct filearg *cur;
1.1 deraadt 886:
1.68 millert 887: if (stat(filename, &sb)) {
1.27 millert 888: warn("%s", filename);
1.68 millert 889: return (0);
1.1 deraadt 890: }
891:
1.68 millert 892: /*
893: * POSIX specifies "For block special devices, all processes using any
894: * file on that device are listed". However the -f flag description
895: * states "The report shall be only for the named files", so we only
896: * look up a block device if the -f flag has not be specified.
897: */
898: if (fuser && !fsflg && S_ISBLK(sb.st_mode)) {
899: if (mntbuf == NULL) {
900: nmounts = getmntinfo(&mntbuf, MNT_NOWAIT);
901: if (nmounts == -1)
902: err(1, "getmntinfo");
903: }
904: for (i = 0; i < nmounts; i++) {
905: if (!strcmp(mntbuf[i].f_mntfromname, filename)) {
906: if (stat(mntbuf[i].f_mntonname, &sb) == -1) {
907: warn("%s", filename);
908: return (0);
909: }
910: cflg = 1;
911: break;
912: }
913: }
914: }
915:
916: if ((cur = malloc(sizeof(*cur))) == NULL)
917: err(1, NULL);
918:
919: cur->ino = sb.st_ino;
920: cur->dev = sb.st_dev & 0xffff;
1.1 deraadt 921: cur->name = filename;
1.68 millert 922: TAILQ_INIT(&cur->fusers);
923: SLIST_INSERT_HEAD(&fileargs, cur, next);
924: return (1);
925: }
926:
927: int
928: signame_to_signum(char *sig)
929: {
930: int n;
931: const char *errstr = NULL;
932:
933: if (isdigit((unsigned char)*sig)) {
934: n = strtonum(sig, 0, NSIG - 1, &errstr);
935: return (errstr ? -1 : n);
936: }
937: if (!strncasecmp(sig, "sig", 3))
938: sig += 3;
939: for (n = 1; n < NSIG; n++) {
940: if (!strcasecmp(sys_signame[n], sig))
941: return (n);
942: }
943: return (-1);
1.1 deraadt 944: }
945:
946: void
1.40 deraadt 947: usage(void)
1.1 deraadt 948: {
1.68 millert 949: if (fuser) {
950: fprintf(stderr, "usage: fuser [-cfku] [-M core] "
951: "[-N system] [-s signal] file ...\n");
952: } else {
953: fprintf(stderr, "usage: fstat [-fnosv] [-M core] [-N system] "
954: "[-p pid] [-u user] [file ...]\n");
955: }
1.1 deraadt 956: exit(1);
957: }
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