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