1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1990, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #if 0 38 #ifndef lint 39 static const char copyright[] = 40 "@(#) Copyright (c) 1980, 1990, 1993, 1994\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif /* not lint */ 43 44 #ifndef lint 45 static char sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95"; 46 #endif /* not lint */ 47 #endif 48 #include <sys/cdefs.h> 49 __FBSDID("$FreeBSD$"); 50 51 #include <sys/param.h> 52 #include <sys/stat.h> 53 #include <sys/mount.h> 54 #include <sys/sysctl.h> 55 #ifdef MOUNT_CHAR_DEVS 56 #include <ufs/ufs/ufsmount.h> 57 #endif 58 #include <err.h> 59 #include <getopt.h> 60 #include <libutil.h> 61 #include <locale.h> 62 #ifdef MOUNT_CHAR_DEVS 63 #include <mntopts.h> 64 #endif 65 #include <stdint.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <sysexits.h> 70 #include <unistd.h> 71 #include <libxo/xo.h> 72 73 #include "extern.h" 74 75 #define UNITS_SI 1 76 #define UNITS_2 2 77 78 /* Maximum widths of various fields. */ 79 struct maxwidths { 80 int mntfrom; 81 int fstype; 82 int total; 83 int used; 84 int avail; 85 int iused; 86 int ifree; 87 }; 88 89 static void addstat(struct statfs *, struct statfs *); 90 static char *getmntpt(const char *); 91 static int int64width(int64_t); 92 static char *makenetvfslist(void); 93 static void prthuman(const struct statfs *, int64_t); 94 static void prthumanval(const char *, int64_t); 95 static intmax_t fsbtoblk(int64_t, uint64_t, u_long); 96 static void prtstat(struct statfs *, struct maxwidths *); 97 static size_t regetmntinfo(struct statfs **, long, const char **); 98 static void update_maxwidths(struct maxwidths *, const struct statfs *); 99 static void usage(void); 100 101 static __inline int 102 imax(int a, int b) 103 { 104 return (a > b ? a : b); 105 } 106 107 static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag; 108 static int thousands; 109 #ifdef MOUNT_CHAR_DEVS 110 static struct ufs_args mdev; 111 #endif 112 113 static const struct option long_options[] = 114 { 115 { "si", no_argument, NULL, 'H' }, 116 { NULL, no_argument, NULL, 0 }, 117 }; 118 119 int 120 main(int argc, char *argv[]) 121 { 122 struct stat stbuf; 123 struct statfs statfsbuf, totalbuf; 124 struct maxwidths maxwidths; 125 struct statfs *mntbuf; 126 #ifdef MOUNT_CHAR_DEVS 127 struct iovec *iov = NULL; 128 #endif 129 const char *fstype; 130 #ifdef MOUNT_CHAR_DEVS 131 char *mntpath; 132 char errmsg[255] = {0}; 133 #endif 134 char *mntpt; 135 const char **vfslist; 136 int i, mntsize; 137 int ch, rv; 138 #ifdef MOUNT_CHAR_DEVS 139 int iovlen = 0; 140 #endif 141 142 fstype = "ufs"; 143 (void)setlocale(LC_ALL, ""); 144 memset(&maxwidths, 0, sizeof(maxwidths)); 145 memset(&totalbuf, 0, sizeof(totalbuf)); 146 totalbuf.f_bsize = DEV_BSIZE; 147 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN); 148 vfslist = NULL; 149 150 argc = xo_parse_args(argc, argv); 151 if (argc < 0) 152 exit(1); 153 154 while ((ch = getopt_long(argc, argv, "+abcgHhiklmnPt:T,", long_options, 155 NULL)) != -1) 156 switch (ch) { 157 case 'a': 158 aflag = 1; 159 break; 160 case 'b': 161 /* FALLTHROUGH */ 162 case 'P': 163 /* 164 * POSIX specifically discusses the behavior of 165 * both -k and -P. It states that the blocksize should 166 * be set to 1024. Thus, if this occurs, simply break 167 * rather than clobbering the old blocksize. 168 */ 169 if (kflag) 170 break; 171 setenv("BLOCKSIZE", "512", 1); 172 hflag = 0; 173 break; 174 case 'c': 175 cflag = 1; 176 break; 177 case 'g': 178 setenv("BLOCKSIZE", "1g", 1); 179 hflag = 0; 180 break; 181 case 'H': 182 hflag = UNITS_SI; 183 break; 184 case 'h': 185 hflag = UNITS_2; 186 break; 187 case 'i': 188 iflag = 1; 189 break; 190 case 'k': 191 kflag++; 192 setenv("BLOCKSIZE", "1024", 1); 193 hflag = 0; 194 break; 195 case 'l': 196 /* Ignore duplicate -l */ 197 if (lflag) 198 break; 199 if (vfslist != NULL) 200 xo_errx(1, "-l and -t are mutually exclusive."); 201 vfslist = makevfslist(makenetvfslist()); 202 lflag = 1; 203 break; 204 case 'm': 205 setenv("BLOCKSIZE", "1m", 1); 206 hflag = 0; 207 break; 208 case 'n': 209 nflag = 1; 210 break; 211 case 't': 212 if (lflag) 213 xo_errx(1, "-l and -t are mutually exclusive."); 214 if (vfslist != NULL) 215 xo_errx(1, "only one -t option may be specified"); 216 fstype = optarg; 217 vfslist = makevfslist(optarg); 218 break; 219 case 'T': 220 Tflag = 1; 221 break; 222 case ',': 223 thousands = 1; 224 break; 225 case '?': 226 default: 227 usage(); 228 } 229 argc -= optind; 230 argv += optind; 231 232 rv = 0; 233 if (!*argv) { 234 /* everything (modulo -t) */ 235 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 236 mntsize = regetmntinfo(&mntbuf, mntsize, vfslist); 237 } else { 238 /* just the filesystems specified on the command line */ 239 mntbuf = malloc(argc * sizeof(*mntbuf)); 240 if (mntbuf == NULL) 241 xo_err(1, "malloc()"); 242 mntsize = 0; 243 /* continued in for loop below */ 244 } 245 246 xo_open_container("storage-system-information"); 247 xo_open_list("filesystem"); 248 249 /* iterate through specified filesystems */ 250 for (; *argv; argv++) { 251 if (stat(*argv, &stbuf) < 0) { 252 if ((mntpt = getmntpt(*argv)) == NULL) { 253 xo_warn("%s", *argv); 254 rv = 1; 255 continue; 256 } 257 #ifdef MOUNT_CHAR_DEVS 258 } else if (S_ISCHR(stbuf.st_mode)) { 259 if ((mntpt = getmntpt(*argv)) == NULL) { 260 mdev.fspec = *argv; 261 mntpath = strdup("/tmp/df.XXXXXX"); 262 if (mntpath == NULL) { 263 xo_warn("strdup failed"); 264 rv = 1; 265 continue; 266 } 267 mntpt = mkdtemp(mntpath); 268 if (mntpt == NULL) { 269 xo_warn("mkdtemp(\"%s\") failed", mntpath); 270 rv = 1; 271 free(mntpath); 272 continue; 273 } 274 if (iov != NULL) 275 free_iovec(&iov, &iovlen); 276 build_iovec_argf(&iov, &iovlen, "fstype", "%s", 277 fstype); 278 build_iovec_argf(&iov, &iovlen, "fspath", "%s", 279 mntpath); 280 build_iovec_argf(&iov, &iovlen, "from", "%s", 281 *argv); 282 build_iovec(&iov, &iovlen, "errmsg", errmsg, 283 sizeof(errmsg)); 284 if (nmount(iov, iovlen, 285 MNT_RDONLY|MNT_NOEXEC) < 0) { 286 if (errmsg[0]) 287 xo_warn("%s: %s", *argv, 288 errmsg); 289 else 290 xo_warn("%s", *argv); 291 rv = 1; 292 (void)rmdir(mntpt); 293 free(mntpath); 294 continue; 295 } else if (statfs(mntpt, &statfsbuf) == 0) { 296 statfsbuf.f_mntonname[0] = '\0'; 297 prtstat(&statfsbuf, &maxwidths); 298 if (cflag) 299 addstat(&totalbuf, &statfsbuf); 300 } else { 301 xo_warn("%s", *argv); 302 rv = 1; 303 } 304 (void)unmount(mntpt, 0); 305 (void)rmdir(mntpt); 306 free(mntpath); 307 continue; 308 } 309 #endif 310 } else 311 mntpt = *argv; 312 313 /* 314 * Statfs does not take a `wait' flag, so we cannot 315 * implement nflag here. 316 */ 317 if (statfs(mntpt, &statfsbuf) < 0) { 318 xo_warn("%s", mntpt); 319 rv = 1; 320 continue; 321 } 322 323 /* 324 * Check to make sure the arguments we've been given are 325 * satisfied. Return an error if we have been asked to 326 * list a mount point that does not match the other args 327 * we've been given (-l, -t, etc.). 328 */ 329 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) { 330 rv = 1; 331 continue; 332 } 333 334 /* the user asked for it, so ignore the ignore flag */ 335 statfsbuf.f_flags &= ~MNT_IGNORE; 336 337 /* add to list */ 338 mntbuf[mntsize++] = statfsbuf; 339 } 340 341 memset(&maxwidths, 0, sizeof(maxwidths)); 342 for (i = 0; i < mntsize; i++) { 343 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) { 344 update_maxwidths(&maxwidths, &mntbuf[i]); 345 if (cflag) 346 addstat(&totalbuf, &mntbuf[i]); 347 } 348 } 349 for (i = 0; i < mntsize; i++) 350 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) 351 prtstat(&mntbuf[i], &maxwidths); 352 353 xo_close_list("filesystem"); 354 355 if (cflag) 356 prtstat(&totalbuf, &maxwidths); 357 358 xo_close_container("storage-system-information"); 359 xo_finish(); 360 exit(rv); 361 } 362 363 static char * 364 getmntpt(const char *name) 365 { 366 size_t mntsize, i; 367 struct statfs *mntbuf; 368 369 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 370 for (i = 0; i < mntsize; i++) { 371 if (!strcmp(mntbuf[i].f_mntfromname, name)) 372 return (mntbuf[i].f_mntonname); 373 } 374 return (NULL); 375 } 376 377 /* 378 * Make a pass over the file system info in ``mntbuf'' filtering out 379 * file system types not in vfslist and possibly re-stating to get 380 * current (not cached) info. Returns the new count of valid statfs bufs. 381 */ 382 static size_t 383 regetmntinfo(struct statfs **mntbufp, long mntsize, const char **vfslist) 384 { 385 int error, i, j; 386 struct statfs *mntbuf; 387 388 if (vfslist == NULL) 389 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT)); 390 391 mntbuf = *mntbufp; 392 for (j = 0, i = 0; i < mntsize; i++) { 393 if (checkvfsname(mntbuf[i].f_fstypename, vfslist)) 394 continue; 395 /* 396 * XXX statfs(2) can fail for various reasons. It may be 397 * possible that the user does not have access to the 398 * pathname, if this happens, we will fall back on 399 * "stale" filesystem statistics. 400 */ 401 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]); 402 if (nflag || error < 0) 403 if (i != j) { 404 if (error < 0) 405 xo_warnx("%s stats possibly stale", 406 mntbuf[i].f_mntonname); 407 mntbuf[j] = mntbuf[i]; 408 } 409 j++; 410 } 411 return (j); 412 } 413 414 static void 415 prthuman(const struct statfs *sfsp, int64_t used) 416 { 417 418 prthumanval(" {:blocks/%6s}", sfsp->f_blocks * sfsp->f_bsize); 419 prthumanval(" {:used/%6s}", used * sfsp->f_bsize); 420 prthumanval(" {:available/%6s}", sfsp->f_bavail * sfsp->f_bsize); 421 } 422 423 static void 424 prthumanval(const char *fmt, int64_t bytes) 425 { 426 char buf[6]; 427 int flags; 428 429 flags = HN_B | HN_NOSPACE | HN_DECIMAL; 430 if (hflag == UNITS_SI) 431 flags |= HN_DIVISOR_1000; 432 433 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1), 434 bytes, "", HN_AUTOSCALE, flags); 435 436 xo_attr("value", "%lld", (long long) bytes); 437 xo_emit(fmt, buf); 438 } 439 440 /* 441 * Print an inode count in "human-readable" format. 442 */ 443 static void 444 prthumanvalinode(const char *fmt, int64_t bytes) 445 { 446 char buf[6]; 447 int flags; 448 449 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000; 450 451 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1), 452 bytes, "", HN_AUTOSCALE, flags); 453 454 xo_attr("value", "%lld", (long long) bytes); 455 xo_emit(fmt, buf); 456 } 457 458 /* 459 * Convert statfs returned file system size into BLOCKSIZE units. 460 */ 461 static intmax_t 462 fsbtoblk(int64_t num, uint64_t fsbs, u_long bs) 463 { 464 return (num * (intmax_t) fsbs / (int64_t) bs); 465 } 466 467 /* 468 * Print out status about a file system. 469 */ 470 static void 471 prtstat(struct statfs *sfsp, struct maxwidths *mwp) 472 { 473 static long blocksize; 474 static int headerlen, timesthrough = 0; 475 static const char *header; 476 int64_t used, availblks, inodes; 477 const char *format; 478 479 if (++timesthrough == 1) { 480 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem")); 481 mwp->fstype = imax(mwp->fstype, (int)strlen("Type")); 482 if (thousands) { /* make space for commas */ 483 mwp->total += (mwp->total - 1) / 3; 484 mwp->used += (mwp->used - 1) / 3; 485 mwp->avail += (mwp->avail - 1) / 3; 486 mwp->iused += (mwp->iused - 1) / 3; 487 mwp->ifree += (mwp->ifree - 1) / 3; 488 } 489 if (hflag) { 490 header = " Size"; 491 mwp->total = mwp->used = mwp->avail = 492 (int)strlen(header); 493 } else { 494 header = getbsize(&headerlen, &blocksize); 495 mwp->total = imax(mwp->total, headerlen); 496 } 497 mwp->used = imax(mwp->used, (int)strlen("Used")); 498 mwp->avail = imax(mwp->avail, (int)strlen("Avail")); 499 500 xo_emit("{T:/%-*s}", mwp->mntfrom, "Filesystem"); 501 if (Tflag) 502 xo_emit(" {T:/%-*s}", mwp->fstype, "Type"); 503 xo_emit(" {T:/%*s} {T:/%*s} {T:/%*s} {T:Capacity}", 504 mwp->total, header, 505 mwp->used, "Used", mwp->avail, "Avail"); 506 if (iflag) { 507 mwp->iused = imax(hflag ? 0 : mwp->iused, 508 (int)strlen(" iused")); 509 mwp->ifree = imax(hflag ? 0 : mwp->ifree, 510 (int)strlen("ifree")); 511 xo_emit(" {T:/%*s} {T:/%*s} {T:\%iused}", 512 mwp->iused - 2, "iused", mwp->ifree, "ifree"); 513 } 514 xo_emit(" {T:Mounted on}\n"); 515 } 516 517 xo_open_instance("filesystem"); 518 /* Check for 0 block size. Can this happen? */ 519 if (sfsp->f_bsize == 0) { 520 xo_warnx ("File system %s does not have a block size, assuming 512.", 521 sfsp->f_mntonname); 522 sfsp->f_bsize = 512; 523 } 524 xo_emit("{tk:name/%-*s}", mwp->mntfrom, sfsp->f_mntfromname); 525 if (Tflag) 526 xo_emit(" {:type/%-*s}", mwp->fstype, sfsp->f_fstypename); 527 used = sfsp->f_blocks - sfsp->f_bfree; 528 availblks = sfsp->f_bavail + used; 529 if (hflag) { 530 prthuman(sfsp, used); 531 } else { 532 if (thousands) 533 format = " {t:total-blocks/%*j'd} {t:used-blocks/%*j'd} " 534 "{t:available-blocks/%*j'd}"; 535 else 536 format = " {t:total-blocks/%*jd} {t:used-blocks/%*jd} " 537 "{t:available-blocks/%*jd}"; 538 xo_emit(format, 539 mwp->total, fsbtoblk(sfsp->f_blocks, 540 sfsp->f_bsize, blocksize), 541 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize), 542 mwp->avail, fsbtoblk(sfsp->f_bavail, 543 sfsp->f_bsize, blocksize)); 544 } 545 xo_emit(" {:used-percent/%5.0f}{U:%%}", 546 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0); 547 if (iflag) { 548 inodes = sfsp->f_files; 549 used = inodes - sfsp->f_ffree; 550 if (hflag) { 551 xo_emit(" "); 552 prthumanvalinode(" {:inodes-used/%5s}", used); 553 prthumanvalinode(" {:inodes-free/%5s}", sfsp->f_ffree); 554 } else { 555 if (thousands) 556 format = " {:inodes-used/%*j'd} {:inodes-free/%*j'd}"; 557 else 558 format = " {:inodes-used/%*jd} {:inodes-free/%*jd}"; 559 xo_emit(format, mwp->iused, (intmax_t)used, 560 mwp->ifree, (intmax_t)sfsp->f_ffree); 561 } 562 xo_emit(" {:inodes-used-percent/%4.0f}{U:%%} ", 563 inodes == 0 ? 100.0 : 564 (double)used / (double)inodes * 100.0); 565 } else 566 xo_emit(" "); 567 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0) 568 xo_emit(" {:mounted-on}", sfsp->f_mntonname); 569 xo_emit("\n"); 570 xo_close_instance("filesystem"); 571 } 572 573 static void 574 addstat(struct statfs *totalfsp, struct statfs *statfsp) 575 { 576 uint64_t bsize; 577 578 bsize = statfsp->f_bsize / totalfsp->f_bsize; 579 totalfsp->f_blocks += statfsp->f_blocks * bsize; 580 totalfsp->f_bfree += statfsp->f_bfree * bsize; 581 totalfsp->f_bavail += statfsp->f_bavail * bsize; 582 totalfsp->f_files += statfsp->f_files; 583 totalfsp->f_ffree += statfsp->f_ffree; 584 } 585 586 /* 587 * Update the maximum field-width information in `mwp' based on 588 * the file system specified by `sfsp'. 589 */ 590 static void 591 update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp) 592 { 593 static long blocksize = 0; 594 int dummy; 595 596 if (blocksize == 0) 597 getbsize(&dummy, &blocksize); 598 599 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname)); 600 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename)); 601 mwp->total = imax(mwp->total, int64width( 602 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize))); 603 mwp->used = imax(mwp->used, 604 int64width(fsbtoblk((int64_t)sfsp->f_blocks - 605 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize))); 606 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail, 607 sfsp->f_bsize, blocksize))); 608 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files - 609 sfsp->f_ffree)); 610 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree)); 611 } 612 613 /* Return the width in characters of the specified value. */ 614 static int 615 int64width(int64_t val) 616 { 617 int len; 618 619 len = 0; 620 /* Negative or zero values require one extra digit. */ 621 if (val <= 0) { 622 val = -val; 623 len++; 624 } 625 while (val > 0) { 626 len++; 627 val /= 10; 628 } 629 630 return (len); 631 } 632 633 static void 634 usage(void) 635 { 636 637 xo_error( 638 "usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [-,]\n" 639 " [file | filesystem ...]\n"); 640 exit(EX_USAGE); 641 } 642 643 static char * 644 makenetvfslist(void) 645 { 646 char *str, *strptr, **listptr; 647 struct xvfsconf *xvfsp, *keep_xvfsp; 648 size_t buflen; 649 int cnt, i, maxvfsconf; 650 651 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) { 652 xo_warn("sysctl(vfs.conflist)"); 653 return (NULL); 654 } 655 xvfsp = malloc(buflen); 656 if (xvfsp == NULL) { 657 xo_warnx("malloc failed"); 658 return (NULL); 659 } 660 keep_xvfsp = xvfsp; 661 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) { 662 xo_warn("sysctl(vfs.conflist)"); 663 free(keep_xvfsp); 664 return (NULL); 665 } 666 maxvfsconf = buflen / sizeof(struct xvfsconf); 667 668 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) { 669 xo_warnx("malloc failed"); 670 free(keep_xvfsp); 671 return (NULL); 672 } 673 674 for (cnt = 0, i = 0; i < maxvfsconf; i++) { 675 if (xvfsp->vfc_flags & VFCF_NETWORK) { 676 listptr[cnt++] = strdup(xvfsp->vfc_name); 677 if (listptr[cnt-1] == NULL) { 678 xo_warnx("malloc failed"); 679 free(listptr); 680 free(keep_xvfsp); 681 return (NULL); 682 } 683 } 684 xvfsp++; 685 } 686 687 if (cnt == 0 || 688 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) { 689 if (cnt > 0) 690 xo_warnx("malloc failed"); 691 free(listptr); 692 free(keep_xvfsp); 693 return (NULL); 694 } 695 696 *str = 'n'; *(str + 1) = 'o'; 697 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) { 698 strlcpy(strptr, listptr[i], 32); 699 strptr += strlen(listptr[i]); 700 *strptr = ','; 701 free(listptr[i]); 702 } 703 *(--strptr) = '\0'; 704 705 free(keep_xvfsp); 706 free(listptr); 707 return (str); 708 } 709