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 #include <err.h> 56 #include <getopt.h> 57 #include <libutil.h> 58 #include <locale.h> 59 #include <stdint.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <sysexits.h> 64 #include <unistd.h> 65 #include <libxo/xo.h> 66 67 #define UNITS_SI 1 68 #define UNITS_2 2 69 70 /* Maximum widths of various fields. */ 71 struct maxwidths { 72 int mntfrom; 73 int fstype; 74 int total; 75 int used; 76 int avail; 77 int iused; 78 int ifree; 79 }; 80 81 static void addstat(struct statfs *, struct statfs *); 82 static char *getmntpt(const char *); 83 static const char **makevfslist(char *fslist, int *skip); 84 static int checkvfsname(const char *vfsname, const char **vfslist, int skip); 85 static int checkvfsselected(char *); 86 static int int64width(int64_t); 87 static char *makenetvfslist(void); 88 static void prthuman(const struct statfs *, int64_t); 89 static void prthumanval(const char *, int64_t); 90 static intmax_t fsbtoblk(int64_t, uint64_t, u_long); 91 static void prtstat(struct statfs *, struct maxwidths *); 92 static size_t regetmntinfo(struct statfs **, long); 93 static void update_maxwidths(struct maxwidths *, const struct statfs *); 94 static void usage(void); 95 96 static __inline int 97 imax(int a, int b) 98 { 99 return (a > b ? a : b); 100 } 101 102 static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag; 103 static int thousands; 104 static int skipvfs_l, skipvfs_t; 105 static const char **vfslist_l, **vfslist_t; 106 107 static const struct option long_options[] = 108 { 109 { "si", no_argument, NULL, 'H' }, 110 { NULL, no_argument, NULL, 0 }, 111 }; 112 113 int 114 main(int argc, char *argv[]) 115 { 116 struct stat stbuf; 117 struct statfs statfsbuf, totalbuf; 118 struct maxwidths maxwidths; 119 struct statfs *mntbuf; 120 char *mntpt; 121 int i, mntsize; 122 int ch, rv; 123 124 (void)setlocale(LC_ALL, ""); 125 memset(&maxwidths, 0, sizeof(maxwidths)); 126 memset(&totalbuf, 0, sizeof(totalbuf)); 127 totalbuf.f_bsize = DEV_BSIZE; 128 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN); 129 130 argc = xo_parse_args(argc, argv); 131 if (argc < 0) 132 exit(1); 133 134 while ((ch = getopt_long(argc, argv, "+abcgHhiklmnPt:T,", long_options, 135 NULL)) != -1) 136 switch (ch) { 137 case 'a': 138 aflag = 1; 139 break; 140 case 'b': 141 /* FALLTHROUGH */ 142 case 'P': 143 /* 144 * POSIX specifically discusses the behavior of 145 * both -k and -P. It states that the blocksize should 146 * be set to 1024. Thus, if this occurs, simply break 147 * rather than clobbering the old blocksize. 148 */ 149 if (kflag) 150 break; 151 setenv("BLOCKSIZE", "512", 1); 152 hflag = 0; 153 break; 154 case 'c': 155 cflag = 1; 156 break; 157 case 'g': 158 setenv("BLOCKSIZE", "1g", 1); 159 hflag = 0; 160 break; 161 case 'H': 162 hflag = UNITS_SI; 163 break; 164 case 'h': 165 hflag = UNITS_2; 166 break; 167 case 'i': 168 iflag = 1; 169 break; 170 case 'k': 171 kflag++; 172 setenv("BLOCKSIZE", "1024", 1); 173 hflag = 0; 174 break; 175 case 'l': 176 /* Ignore duplicate -l */ 177 if (lflag) 178 break; 179 vfslist_l = makevfslist(makenetvfslist(), &skipvfs_l); 180 lflag = 1; 181 break; 182 case 'm': 183 setenv("BLOCKSIZE", "1m", 1); 184 hflag = 0; 185 break; 186 case 'n': 187 nflag = 1; 188 break; 189 case 't': 190 if (vfslist_t != NULL) 191 xo_errx(1, "only one -t option may be specified"); 192 vfslist_t = makevfslist(optarg, &skipvfs_t); 193 break; 194 case 'T': 195 Tflag = 1; 196 break; 197 case ',': 198 thousands = 1; 199 break; 200 case '?': 201 default: 202 usage(); 203 } 204 argc -= optind; 205 argv += optind; 206 207 rv = 0; 208 if (!*argv) { 209 /* everything (modulo -t) */ 210 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 211 mntsize = regetmntinfo(&mntbuf, mntsize); 212 } else { 213 /* just the filesystems specified on the command line */ 214 mntbuf = malloc(argc * sizeof(*mntbuf)); 215 if (mntbuf == NULL) 216 xo_err(1, "malloc()"); 217 mntsize = 0; 218 /* continued in for loop below */ 219 } 220 221 xo_open_container("storage-system-information"); 222 xo_open_list("filesystem"); 223 224 /* iterate through specified filesystems */ 225 for (; *argv; argv++) { 226 if (stat(*argv, &stbuf) < 0) { 227 if ((mntpt = getmntpt(*argv)) == NULL) { 228 xo_warn("%s", *argv); 229 rv = 1; 230 continue; 231 } 232 } else if (S_ISCHR(stbuf.st_mode)) { 233 mntpt = getmntpt(*argv); 234 if (mntpt == NULL) { 235 xo_warnx("%s: not mounted", *argv); 236 rv = 1; 237 continue; 238 } 239 } else { 240 mntpt = *argv; 241 } 242 243 /* 244 * Statfs does not take a `wait' flag, so we cannot 245 * implement nflag here. 246 */ 247 if (statfs(mntpt, &statfsbuf) < 0) { 248 xo_warn("%s", mntpt); 249 rv = 1; 250 continue; 251 } 252 253 /* 254 * Check to make sure the arguments we've been given are 255 * satisfied. Return an error if we have been asked to 256 * list a mount point that does not match the other args 257 * we've been given (-l, -t, etc.). 258 */ 259 if (checkvfsselected(statfsbuf.f_fstypename) != 0) { 260 rv = 1; 261 continue; 262 } 263 264 /* the user asked for it, so ignore the ignore flag */ 265 statfsbuf.f_flags &= ~MNT_IGNORE; 266 267 /* add to list */ 268 mntbuf[mntsize++] = statfsbuf; 269 } 270 271 memset(&maxwidths, 0, sizeof(maxwidths)); 272 for (i = 0; i < mntsize; i++) { 273 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) { 274 update_maxwidths(&maxwidths, &mntbuf[i]); 275 if (cflag) 276 addstat(&totalbuf, &mntbuf[i]); 277 } 278 } 279 for (i = 0; i < mntsize; i++) 280 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) 281 prtstat(&mntbuf[i], &maxwidths); 282 283 xo_close_list("filesystem"); 284 285 if (cflag) 286 prtstat(&totalbuf, &maxwidths); 287 288 xo_close_container("storage-system-information"); 289 xo_finish(); 290 exit(rv); 291 } 292 293 static char * 294 getmntpt(const char *name) 295 { 296 size_t mntsize, i; 297 struct statfs *mntbuf; 298 299 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 300 for (i = 0; i < mntsize; i++) { 301 if (!strcmp(mntbuf[i].f_mntfromname, name)) 302 return (mntbuf[i].f_mntonname); 303 } 304 return (NULL); 305 } 306 307 static const char ** 308 makevfslist(char *fslist, int *skip) 309 { 310 const char **av; 311 int i; 312 char *nextcp; 313 314 if (fslist == NULL) 315 return (NULL); 316 *skip = 0; 317 if (fslist[0] == 'n' && fslist[1] == 'o') { 318 fslist += 2; 319 *skip = 1; 320 } 321 for (i = 0, nextcp = fslist; *nextcp; nextcp++) 322 if (*nextcp == ',') 323 i++; 324 if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) { 325 warnx("malloc failed"); 326 return (NULL); 327 } 328 nextcp = fslist; 329 i = 0; 330 av[i++] = nextcp; 331 while ((nextcp = strchr(nextcp, ',')) != NULL) { 332 *nextcp++ = '\0'; 333 av[i++] = nextcp; 334 } 335 av[i++] = NULL; 336 return (av); 337 } 338 339 static int 340 checkvfsname(const char *vfsname, const char **vfslist, int skip) 341 { 342 343 if (vfslist == NULL) 344 return (0); 345 while (*vfslist != NULL) { 346 if (strcmp(vfsname, *vfslist) == 0) 347 return (skip); 348 ++vfslist; 349 } 350 return (!skip); 351 } 352 353 /* 354 * Without -l and -t option, all file system types are enabled. 355 * The -l option selects the local file systems, if present. 356 * A -t option modifies the selection by adding or removing further 357 * file system types, based on the argument that is passed. 358 */ 359 static int 360 checkvfsselected(char *fstypename) 361 { 362 int result; 363 364 if (vfslist_t) { 365 /* if -t option used then select passed types */ 366 result = checkvfsname(fstypename, vfslist_t, skipvfs_t); 367 if (vfslist_l) { 368 /* if -l option then adjust selection */ 369 if (checkvfsname(fstypename, vfslist_l, skipvfs_l) == skipvfs_t) 370 result = skipvfs_t; 371 } 372 } else { 373 /* no -t option then -l decides */ 374 result = checkvfsname(fstypename, vfslist_l, skipvfs_l); 375 } 376 return (result); 377 } 378 379 /* 380 * Make a pass over the file system info in ``mntbuf'' filtering out 381 * file system types not in vfslist_{l,t} and possibly re-stating to get 382 * current (not cached) info. Returns the new count of valid statfs bufs. 383 */ 384 static size_t 385 regetmntinfo(struct statfs **mntbufp, long mntsize) 386 { 387 int error, i, j; 388 struct statfs *mntbuf; 389 390 if (vfslist_l == NULL && vfslist_t == NULL) 391 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT)); 392 393 mntbuf = *mntbufp; 394 for (j = 0, i = 0; i < mntsize; i++) { 395 if (checkvfsselected(mntbuf[i].f_fstypename) != 0) 396 continue; 397 /* 398 * XXX statfs(2) can fail for various reasons. It may be 399 * possible that the user does not have access to the 400 * pathname, if this happens, we will fall back on 401 * "stale" filesystem statistics. 402 */ 403 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]); 404 if (nflag || error < 0) 405 if (i != j) { 406 if (error < 0) 407 xo_warnx("%s stats possibly stale", 408 mntbuf[i].f_mntonname); 409 mntbuf[j] = mntbuf[i]; 410 } 411 j++; 412 } 413 return (j); 414 } 415 416 static void 417 prthuman(const struct statfs *sfsp, int64_t used) 418 { 419 420 prthumanval(" {:blocks/%6s}", sfsp->f_blocks * sfsp->f_bsize); 421 prthumanval(" {:used/%6s}", used * sfsp->f_bsize); 422 prthumanval(" {:available/%6s}", sfsp->f_bavail * sfsp->f_bsize); 423 } 424 425 static void 426 prthumanval(const char *fmt, int64_t bytes) 427 { 428 char buf[6]; 429 int flags; 430 431 flags = HN_B | HN_NOSPACE | HN_DECIMAL; 432 if (hflag == UNITS_SI) 433 flags |= HN_DIVISOR_1000; 434 435 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1), 436 bytes, "", HN_AUTOSCALE, flags); 437 438 xo_attr("value", "%lld", (long long) bytes); 439 xo_emit(fmt, buf); 440 } 441 442 /* 443 * Print an inode count in "human-readable" format. 444 */ 445 static void 446 prthumanvalinode(const char *fmt, int64_t bytes) 447 { 448 char buf[6]; 449 int flags; 450 451 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000; 452 453 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1), 454 bytes, "", HN_AUTOSCALE, flags); 455 456 xo_attr("value", "%lld", (long long) bytes); 457 xo_emit(fmt, buf); 458 } 459 460 /* 461 * Convert statfs returned file system size into BLOCKSIZE units. 462 */ 463 static intmax_t 464 fsbtoblk(int64_t num, uint64_t fsbs, u_long bs) 465 { 466 return (num * (intmax_t) fsbs / (int64_t) bs); 467 } 468 469 /* 470 * Print out status about a file system. 471 */ 472 static void 473 prtstat(struct statfs *sfsp, struct maxwidths *mwp) 474 { 475 static long blocksize; 476 static int headerlen, timesthrough = 0; 477 static const char *header; 478 int64_t used, availblks, inodes; 479 const char *format; 480 481 if (++timesthrough == 1) { 482 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem")); 483 mwp->fstype = imax(mwp->fstype, (int)strlen("Type")); 484 if (thousands) { /* make space for commas */ 485 mwp->total += (mwp->total - 1) / 3; 486 mwp->used += (mwp->used - 1) / 3; 487 mwp->avail += (mwp->avail - 1) / 3; 488 mwp->iused += (mwp->iused - 1) / 3; 489 mwp->ifree += (mwp->ifree - 1) / 3; 490 } 491 if (hflag) { 492 header = " Size"; 493 mwp->total = mwp->used = mwp->avail = 494 (int)strlen(header); 495 } else { 496 header = getbsize(&headerlen, &blocksize); 497 mwp->total = imax(mwp->total, headerlen); 498 } 499 mwp->used = imax(mwp->used, (int)strlen("Used")); 500 mwp->avail = imax(mwp->avail, (int)strlen("Avail")); 501 502 xo_emit("{T:/%-*s}", mwp->mntfrom, "Filesystem"); 503 if (Tflag) 504 xo_emit(" {T:/%-*s}", mwp->fstype, "Type"); 505 xo_emit(" {T:/%*s} {T:/%*s} {T:/%*s} {T:Capacity}", 506 mwp->total, header, 507 mwp->used, "Used", mwp->avail, "Avail"); 508 if (iflag) { 509 mwp->iused = imax(hflag ? 0 : mwp->iused, 510 (int)strlen(" iused")); 511 mwp->ifree = imax(hflag ? 0 : mwp->ifree, 512 (int)strlen("ifree")); 513 xo_emit(" {T:/%*s} {T:/%*s} {T:\%iused}", 514 mwp->iused - 2, "iused", mwp->ifree, "ifree"); 515 } 516 xo_emit(" {T:Mounted on}\n"); 517 } 518 519 xo_open_instance("filesystem"); 520 /* Check for 0 block size. Can this happen? */ 521 if (sfsp->f_bsize == 0) { 522 xo_warnx ("File system %s does not have a block size, assuming 512.", 523 sfsp->f_mntonname); 524 sfsp->f_bsize = 512; 525 } 526 xo_emit("{tk:name/%-*s}", mwp->mntfrom, sfsp->f_mntfromname); 527 if (Tflag) 528 xo_emit(" {:type/%-*s}", mwp->fstype, sfsp->f_fstypename); 529 used = sfsp->f_blocks - sfsp->f_bfree; 530 availblks = sfsp->f_bavail + used; 531 if (hflag) { 532 prthuman(sfsp, used); 533 } else { 534 if (thousands) 535 format = " {t:total-blocks/%*j'd} {t:used-blocks/%*j'd} " 536 "{t:available-blocks/%*j'd}"; 537 else 538 format = " {t:total-blocks/%*jd} {t:used-blocks/%*jd} " 539 "{t:available-blocks/%*jd}"; 540 xo_emit(format, 541 mwp->total, fsbtoblk(sfsp->f_blocks, 542 sfsp->f_bsize, blocksize), 543 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize), 544 mwp->avail, fsbtoblk(sfsp->f_bavail, 545 sfsp->f_bsize, blocksize)); 546 } 547 xo_emit(" {:used-percent/%5.0f}{U:%%}", 548 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0); 549 if (iflag) { 550 inodes = sfsp->f_files; 551 used = inodes - sfsp->f_ffree; 552 if (hflag) { 553 xo_emit(" "); 554 prthumanvalinode(" {:inodes-used/%5s}", used); 555 prthumanvalinode(" {:inodes-free/%5s}", sfsp->f_ffree); 556 } else { 557 if (thousands) 558 format = " {:inodes-used/%*j'd} {:inodes-free/%*j'd}"; 559 else 560 format = " {:inodes-used/%*jd} {:inodes-free/%*jd}"; 561 xo_emit(format, mwp->iused, (intmax_t)used, 562 mwp->ifree, (intmax_t)sfsp->f_ffree); 563 } 564 xo_emit(" {:inodes-used-percent/%4.0f}{U:%%} ", 565 inodes == 0 ? 100.0 : 566 (double)used / (double)inodes * 100.0); 567 } else 568 xo_emit(" "); 569 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0) 570 xo_emit(" {:mounted-on}", sfsp->f_mntonname); 571 xo_emit("\n"); 572 xo_close_instance("filesystem"); 573 } 574 575 static void 576 addstat(struct statfs *totalfsp, struct statfs *statfsp) 577 { 578 uint64_t bsize; 579 580 bsize = statfsp->f_bsize / totalfsp->f_bsize; 581 totalfsp->f_blocks += statfsp->f_blocks * bsize; 582 totalfsp->f_bfree += statfsp->f_bfree * bsize; 583 totalfsp->f_bavail += statfsp->f_bavail * bsize; 584 totalfsp->f_files += statfsp->f_files; 585 totalfsp->f_ffree += statfsp->f_ffree; 586 } 587 588 /* 589 * Update the maximum field-width information in `mwp' based on 590 * the file system specified by `sfsp'. 591 */ 592 static void 593 update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp) 594 { 595 static long blocksize = 0; 596 int dummy; 597 598 if (blocksize == 0) 599 getbsize(&dummy, &blocksize); 600 601 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname)); 602 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename)); 603 mwp->total = imax(mwp->total, int64width( 604 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize))); 605 mwp->used = imax(mwp->used, 606 int64width(fsbtoblk((int64_t)sfsp->f_blocks - 607 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize))); 608 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail, 609 sfsp->f_bsize, blocksize))); 610 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files - 611 sfsp->f_ffree)); 612 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree)); 613 } 614 615 /* Return the width in characters of the specified value. */ 616 static int 617 int64width(int64_t val) 618 { 619 int len; 620 621 len = 0; 622 /* Negative or zero values require one extra digit. */ 623 if (val <= 0) { 624 val = -val; 625 len++; 626 } 627 while (val > 0) { 628 len++; 629 val /= 10; 630 } 631 632 return (len); 633 } 634 635 static void 636 usage(void) 637 { 638 639 xo_error( 640 "usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [-,]\n" 641 " [file | filesystem ...]\n"); 642 exit(EX_USAGE); 643 } 644 645 static char * 646 makenetvfslist(void) 647 { 648 char *str, *strptr, **listptr; 649 struct xvfsconf *xvfsp, *keep_xvfsp; 650 size_t buflen; 651 int cnt, i, maxvfsconf; 652 653 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) { 654 xo_warn("sysctl(vfs.conflist)"); 655 return (NULL); 656 } 657 xvfsp = malloc(buflen); 658 if (xvfsp == NULL) { 659 xo_warnx("malloc failed"); 660 return (NULL); 661 } 662 keep_xvfsp = xvfsp; 663 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) { 664 xo_warn("sysctl(vfs.conflist)"); 665 free(keep_xvfsp); 666 return (NULL); 667 } 668 maxvfsconf = buflen / sizeof(struct xvfsconf); 669 670 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) { 671 xo_warnx("malloc failed"); 672 free(keep_xvfsp); 673 return (NULL); 674 } 675 676 for (cnt = 0, i = 0; i < maxvfsconf; i++) { 677 if (xvfsp->vfc_flags & VFCF_NETWORK) { 678 listptr[cnt++] = strdup(xvfsp->vfc_name); 679 if (listptr[cnt-1] == NULL) { 680 xo_warnx("malloc failed"); 681 free(listptr); 682 free(keep_xvfsp); 683 return (NULL); 684 } 685 } 686 xvfsp++; 687 } 688 689 if (cnt == 0 || 690 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) { 691 if (cnt > 0) 692 xo_warnx("malloc failed"); 693 free(listptr); 694 free(keep_xvfsp); 695 return (NULL); 696 } 697 698 *str = 'n'; *(str + 1) = 'o'; 699 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) { 700 strlcpy(strptr, listptr[i], 32); 701 strptr += strlen(listptr[i]); 702 *strptr = ','; 703 free(listptr[i]); 704 } 705 *(--strptr) = '\0'; 706 707 free(keep_xvfsp); 708 free(listptr); 709 return (str); 710 } 711