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 #include <sys/param.h> 50 #include <sys/stat.h> 51 #include <sys/mount.h> 52 #include <sys/sysctl.h> 53 #include <getopt.h> 54 #include <libutil.h> 55 #include <locale.h> 56 #include <stdint.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <sysexits.h> 61 #include <unistd.h> 62 #include <libxo/xo.h> 63 64 #define UNITS_SI 1 65 #define UNITS_2 2 66 67 /* Maximum widths of various fields. */ 68 struct maxwidths { 69 int mntfrom; 70 int fstype; 71 int total; 72 int used; 73 int avail; 74 int iused; 75 int ifree; 76 }; 77 78 static void addstat(struct statfs *, struct statfs *); 79 static char *getmntpt(const char *); 80 static const char **makevfslist(char *fslist, int *skip); 81 static int checkvfsname(const char *vfsname, const char **vfslist, int skip); 82 static int checkvfsselected(char *); 83 static int int64width(int64_t); 84 static char *makenetvfslist(void); 85 static void prthuman(const struct statfs *, int64_t); 86 static void prthumanval(const char *, int64_t); 87 static intmax_t fsbtoblk(int64_t, uint64_t, u_long); 88 static void prtstat(struct statfs *, struct maxwidths *); 89 static size_t regetmntinfo(struct statfs **, long); 90 static void update_maxwidths(struct maxwidths *, const struct statfs *); 91 static void usage(void); 92 93 static __inline int 94 imax(int a, int b) 95 { 96 return (a > b ? a : b); 97 } 98 99 static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag; 100 static int thousands; 101 static int skipvfs_l, skipvfs_t; 102 static const char **vfslist_l, **vfslist_t; 103 104 static const struct option long_options[] = 105 { 106 { "si", no_argument, NULL, 'H' }, 107 { NULL, no_argument, NULL, 0 }, 108 }; 109 110 int 111 main(int argc, char *argv[]) 112 { 113 struct stat stbuf; 114 struct statfs statfsbuf, totalbuf; 115 struct maxwidths maxwidths; 116 struct statfs *mntbuf; 117 char *mntpt; 118 int i, mntsize; 119 int ch, rv; 120 121 (void)setlocale(LC_ALL, ""); 122 memset(&maxwidths, 0, sizeof(maxwidths)); 123 memset(&totalbuf, 0, sizeof(totalbuf)); 124 totalbuf.f_bsize = DEV_BSIZE; 125 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN); 126 127 argc = xo_parse_args(argc, argv); 128 if (argc < 0) 129 exit(1); 130 131 while ((ch = getopt_long(argc, argv, "+abcgHhiklmnPt:T,", long_options, 132 NULL)) != -1) 133 switch (ch) { 134 case 'a': 135 aflag = 1; 136 break; 137 case 'b': 138 /* FALLTHROUGH */ 139 case 'P': 140 /* 141 * POSIX specifically discusses the behavior of 142 * both -k and -P. It states that the blocksize should 143 * be set to 1024. Thus, if this occurs, simply break 144 * rather than clobbering the old blocksize. 145 */ 146 if (kflag) 147 break; 148 setenv("BLOCKSIZE", "512", 1); 149 hflag = 0; 150 break; 151 case 'c': 152 cflag = 1; 153 break; 154 case 'g': 155 setenv("BLOCKSIZE", "1g", 1); 156 hflag = 0; 157 break; 158 case 'H': 159 hflag = UNITS_SI; 160 break; 161 case 'h': 162 hflag = UNITS_2; 163 break; 164 case 'i': 165 iflag = 1; 166 break; 167 case 'k': 168 kflag++; 169 setenv("BLOCKSIZE", "1024", 1); 170 hflag = 0; 171 break; 172 case 'l': 173 /* Ignore duplicate -l */ 174 if (lflag) 175 break; 176 vfslist_l = makevfslist(makenetvfslist(), &skipvfs_l); 177 lflag = 1; 178 break; 179 case 'm': 180 setenv("BLOCKSIZE", "1m", 1); 181 hflag = 0; 182 break; 183 case 'n': 184 nflag = 1; 185 break; 186 case 't': 187 if (vfslist_t != NULL) 188 xo_errx(1, "only one -t option may be specified"); 189 vfslist_t = makevfslist(optarg, &skipvfs_t); 190 break; 191 case 'T': 192 Tflag = 1; 193 break; 194 case ',': 195 thousands = 1; 196 break; 197 case '?': 198 default: 199 usage(); 200 } 201 argc -= optind; 202 argv += optind; 203 204 rv = EXIT_SUCCESS; 205 if (!*argv) { 206 /* everything (modulo -t) */ 207 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 208 mntsize = regetmntinfo(&mntbuf, mntsize); 209 } else { 210 /* just the filesystems specified on the command line */ 211 mntbuf = malloc(argc * sizeof(*mntbuf)); 212 if (mntbuf == NULL) 213 xo_err(1, "malloc()"); 214 mntsize = 0; 215 /* continued in for loop below */ 216 } 217 218 xo_open_container("storage-system-information"); 219 xo_open_list("filesystem"); 220 221 /* iterate through specified filesystems */ 222 for (; *argv; argv++) { 223 if (stat(*argv, &stbuf) < 0) { 224 if ((mntpt = getmntpt(*argv)) == NULL) { 225 xo_warn("%s", *argv); 226 rv = EXIT_FAILURE; 227 continue; 228 } 229 } else if (S_ISCHR(stbuf.st_mode)) { 230 mntpt = getmntpt(*argv); 231 if (mntpt == NULL) { 232 xo_warnx("%s: not mounted", *argv); 233 rv = EXIT_FAILURE; 234 continue; 235 } 236 } else { 237 mntpt = *argv; 238 } 239 240 /* 241 * Statfs does not take a `wait' flag, so we cannot 242 * implement nflag here. 243 */ 244 if (statfs(mntpt, &statfsbuf) < 0) { 245 xo_warn("%s", mntpt); 246 rv = EXIT_FAILURE; 247 continue; 248 } 249 250 /* 251 * Check to make sure the arguments we've been given are 252 * satisfied. Return an error if we have been asked to 253 * list a mount point that does not match the other args 254 * we've been given (-l, -t, etc.). 255 */ 256 if (checkvfsselected(statfsbuf.f_fstypename) != 0) { 257 rv = EXIT_FAILURE; 258 continue; 259 } 260 261 /* the user asked for it, so ignore the ignore flag */ 262 statfsbuf.f_flags &= ~MNT_IGNORE; 263 264 /* add to list */ 265 mntbuf[mntsize++] = statfsbuf; 266 } 267 268 memset(&maxwidths, 0, sizeof(maxwidths)); 269 for (i = 0; i < mntsize; i++) { 270 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) { 271 update_maxwidths(&maxwidths, &mntbuf[i]); 272 if (cflag) 273 addstat(&totalbuf, &mntbuf[i]); 274 } 275 } 276 for (i = 0; i < mntsize; i++) 277 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) 278 prtstat(&mntbuf[i], &maxwidths); 279 280 xo_close_list("filesystem"); 281 282 if (cflag) 283 prtstat(&totalbuf, &maxwidths); 284 285 xo_close_container("storage-system-information"); 286 if (xo_finish() < 0) 287 rv = EXIT_FAILURE; 288 exit(rv); 289 } 290 291 static char * 292 getmntpt(const char *name) 293 { 294 size_t mntsize, i; 295 struct statfs *mntbuf; 296 297 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 298 for (i = 0; i < mntsize; i++) { 299 if (!strcmp(mntbuf[i].f_mntfromname, name)) 300 return (mntbuf[i].f_mntonname); 301 } 302 return (NULL); 303 } 304 305 static const char ** 306 makevfslist(char *fslist, int *skip) 307 { 308 const char **av; 309 int i; 310 char *nextcp; 311 312 if (fslist == NULL) 313 return (NULL); 314 *skip = 0; 315 if (fslist[0] == 'n' && fslist[1] == 'o') { 316 fslist += 2; 317 *skip = 1; 318 } 319 for (i = 0, nextcp = fslist; *nextcp; nextcp++) 320 if (*nextcp == ',') 321 i++; 322 if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) { 323 xo_warnx("malloc failed"); 324 return (NULL); 325 } 326 nextcp = fslist; 327 i = 0; 328 av[i++] = nextcp; 329 while ((nextcp = strchr(nextcp, ',')) != NULL) { 330 *nextcp++ = '\0'; 331 av[i++] = nextcp; 332 } 333 av[i++] = NULL; 334 return (av); 335 } 336 337 static int 338 checkvfsname(const char *vfsname, const char **vfslist, int skip) 339 { 340 341 if (vfslist == NULL) 342 return (0); 343 while (*vfslist != NULL) { 344 if (strcmp(vfsname, *vfslist) == 0) 345 return (skip); 346 ++vfslist; 347 } 348 return (!skip); 349 } 350 351 /* 352 * Without -l and -t option, all file system types are enabled. 353 * The -l option selects the local file systems, if present. 354 * A -t option modifies the selection by adding or removing further 355 * file system types, based on the argument that is passed. 356 */ 357 static int 358 checkvfsselected(char *fstypename) 359 { 360 int result; 361 362 if (vfslist_t) { 363 /* if -t option used then select passed types */ 364 result = checkvfsname(fstypename, vfslist_t, skipvfs_t); 365 if (vfslist_l) { 366 /* if -l option then adjust selection */ 367 if (checkvfsname(fstypename, vfslist_l, skipvfs_l) == skipvfs_t) 368 result = skipvfs_t; 369 } 370 } else { 371 /* no -t option then -l decides */ 372 result = checkvfsname(fstypename, vfslist_l, skipvfs_l); 373 } 374 return (result); 375 } 376 377 /* 378 * Make a pass over the file system info in ``mntbuf'' filtering out 379 * file system types not in vfslist_{l,t} 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) 384 { 385 int error, i, j; 386 struct statfs *mntbuf; 387 388 if (vfslist_l == NULL && vfslist_t == NULL) 389 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT)); 390 391 mntbuf = *mntbufp; 392 for (j = 0, i = 0; i < mntsize; i++) { 393 if (checkvfsselected(mntbuf[i].f_fstypename) != 0) 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 if (inodes == 0) 563 xo_emit(" {:inodes-used-percent/ -}{U:} "); 564 else { 565 xo_emit(" {:inodes-used-percent/%4.0f}{U:%%} ", 566 (double)used / (double)inodes * 100.0); 567 } 568 } else 569 xo_emit(" "); 570 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0) 571 xo_emit(" {:mounted-on}", sfsp->f_mntonname); 572 xo_emit("\n"); 573 xo_close_instance("filesystem"); 574 } 575 576 static void 577 addstat(struct statfs *totalfsp, struct statfs *statfsp) 578 { 579 uint64_t bsize; 580 581 bsize = statfsp->f_bsize / totalfsp->f_bsize; 582 totalfsp->f_blocks += statfsp->f_blocks * bsize; 583 totalfsp->f_bfree += statfsp->f_bfree * bsize; 584 totalfsp->f_bavail += statfsp->f_bavail * bsize; 585 totalfsp->f_files += statfsp->f_files; 586 totalfsp->f_ffree += statfsp->f_ffree; 587 } 588 589 /* 590 * Update the maximum field-width information in `mwp' based on 591 * the file system specified by `sfsp'. 592 */ 593 static void 594 update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp) 595 { 596 static long blocksize = 0; 597 int dummy; 598 599 if (blocksize == 0) 600 getbsize(&dummy, &blocksize); 601 602 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname)); 603 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename)); 604 mwp->total = imax(mwp->total, int64width( 605 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize))); 606 mwp->used = imax(mwp->used, 607 int64width(fsbtoblk((int64_t)sfsp->f_blocks - 608 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize))); 609 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail, 610 sfsp->f_bsize, blocksize))); 611 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files - 612 sfsp->f_ffree)); 613 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree)); 614 } 615 616 /* Return the width in characters of the specified value. */ 617 static int 618 int64width(int64_t val) 619 { 620 int len; 621 622 len = 0; 623 /* Negative or zero values require one extra digit. */ 624 if (val <= 0) { 625 val = -val; 626 len++; 627 } 628 while (val > 0) { 629 len++; 630 val /= 10; 631 } 632 633 return (len); 634 } 635 636 static void 637 usage(void) 638 { 639 640 xo_error( 641 "usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [-,]\n" 642 " [file | filesystem ...]\n"); 643 exit(EX_USAGE); 644 } 645 646 static char * 647 makenetvfslist(void) 648 { 649 char *str, *strptr, **listptr; 650 struct xvfsconf *xvfsp, *keep_xvfsp; 651 size_t buflen; 652 int cnt, i, maxvfsconf; 653 654 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) { 655 xo_warn("sysctl(vfs.conflist)"); 656 return (NULL); 657 } 658 xvfsp = malloc(buflen); 659 if (xvfsp == NULL) { 660 xo_warnx("malloc failed"); 661 return (NULL); 662 } 663 keep_xvfsp = xvfsp; 664 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) { 665 xo_warn("sysctl(vfs.conflist)"); 666 free(keep_xvfsp); 667 return (NULL); 668 } 669 maxvfsconf = buflen / sizeof(struct xvfsconf); 670 671 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) { 672 xo_warnx("malloc failed"); 673 free(keep_xvfsp); 674 return (NULL); 675 } 676 677 for (cnt = 0, i = 0; i < maxvfsconf; i++) { 678 if (xvfsp->vfc_flags & VFCF_NETWORK) { 679 listptr[cnt++] = strdup(xvfsp->vfc_name); 680 if (listptr[cnt-1] == NULL) { 681 xo_warnx("malloc failed"); 682 free(listptr); 683 free(keep_xvfsp); 684 return (NULL); 685 } 686 } 687 xvfsp++; 688 } 689 690 if (cnt == 0 || 691 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) { 692 if (cnt > 0) 693 xo_warnx("malloc failed"); 694 free(listptr); 695 free(keep_xvfsp); 696 return (NULL); 697 } 698 699 *str = 'n'; *(str + 1) = 'o'; 700 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) { 701 strlcpy(strptr, listptr[i], 32); 702 strptr += strlen(listptr[i]); 703 *strptr = ','; 704 free(listptr[i]); 705 } 706 *(--strptr) = '\0'; 707 708 free(keep_xvfsp); 709 free(listptr); 710 return (str); 711 } 712