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. */
56struct maxwidths {
57	int	mntfrom;
58	int	fstype;
59	int	total;
60	int	used;
61	int	avail;
62	int	iused;
63	int	ifree;
64};
65
66static void	  addstat(struct statfs *, struct statfs *);
67static char	 *getmntpt(const char *);
68static const char **makevfslist(char *fslist, int *skip);
69static int	  checkvfsname(const char *vfsname, const char **vfslist, int skip);
70static int	  checkvfsselected(char *);
71static int	  int64width(int64_t);
72static char	 *makenetvfslist(void);
73static void	  prthuman(const struct statfs *, int64_t);
74static void	  prthumanval(const char *, int64_t);
75static intmax_t	  fsbtoblk(int64_t, uint64_t, u_long);
76static void	  prtstat(struct statfs *, struct maxwidths *);
77static size_t	  regetmntinfo(struct statfs **, long);
78static void	  update_maxwidths(struct maxwidths *, const struct statfs *);
79static void	  usage(void);
80
81static __inline int
82imax(int a, int b)
83{
84	return (a > b ? a : b);
85}
86
87static int	  aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag;
88static int	  thousands;
89static int	  skipvfs_l, skipvfs_t;
90static const char **vfslist_l, **vfslist_t;
91
92static const struct option long_options[] =
93{
94	{ "si", no_argument, NULL, 'H' },
95	{ NULL, no_argument, NULL, 0 },
96};
97
98int
99main(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
279static char *
280getmntpt(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
293static const char **
294makevfslist(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
325static int
326checkvfsname(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 */
345static int
346checkvfsselected(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 */
370static size_t
371regetmntinfo(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
402static void
403prthuman(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
411static void
412prthumanval(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 */
431static void
432prthumanvalinode(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 */
449static intmax_t
450fsbtoblk(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 */
458static void
459prtstat(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
564static void
565addstat(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 */
581static void
582update_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. */
605static int
606int64width(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
624static void
625usage(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
634static char *
635makenetvfslist(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