quota/free.c - pub/scm/fs/xfs/xfsprogs-dev - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2005 Silicon Graphics, Inc.
  * All Rights Reserved.
  */

 #include <stdbool.h>
 #include "command.h"
 #include "init.h"
 #include "quota.h"
 #include "libfrog/logging.h"
 #include "libfrog/fsgeom.h"

 static cmdinfo_t free_cmd;

 static void
 free_help(void)
 {
 	printf(_(
 "\n"
 " reports the number of free disk blocks and inodes\n"
 "\n"
 " This command reports the number of total, used, and available disk blocks.\n"
 " It can optionally report the same set of numbers for inodes and realtime\n"
 " disk blocks, and will report on all known XFS filesystem mount points and\n"
 " project quota paths by default (see 'print' command for a list).\n"
 " -b -- report the block count values\n"
 " -i -- report the inode count values\n"
 " -r -- report the realtime block count values\n"
 " -h -- report in a human-readable format\n"
 " -N -- suppress the header from the output\n"
 "\n"));
 }

 /*
  * The data and realtime block counts returned (count, used, and
  * free) are all in basic block units.
  */
 static int
 mount_free_space_data(
 	struct fs_path		*mount,
 	uint64_t		*bcount,
 	uint64_t		*bused,
 	uint64_t		*bfree,
 	uint64_t		*icount,
 	uint64_t		*iused,
 	uint64_t		*ifree,
 	uint64_t		*rcount,
 	uint64_t		*rused,
 	uint64_t		*rfree)
 {
 	struct xfs_fsop_counts	fscounts;
 	struct xfs_fsop_geom	fsgeo;
 	struct statfs		st;
 	uint64_t		logsize, count, free;
 	int			fd, ret;

 	if ((fd = open(mount->fs_dir, O_RDONLY)) < 0) {
 		exitcode = 1;
 		fprintf(stderr, "%s: cannot open %s: %s\n",
 			progname, mount->fs_dir, strerror(errno));
 		return 0;
 	}

 	if (platform_fstatfs(fd, &st) < 0) {
 		perror("fstatfs");
 		close(fd);
 		return 0;
 	}

 	if (!(mount->fs_flags & FS_FOREIGN)) {
 		ret = -xfrog_geometry(fd, &fsgeo);
 		if (ret) {
 			xfrog_perror(ret, "XFS_IOC_FSGEOMETRY");
 			close(fd);
 			return 0;
 		}
 		if ((xfsctl(mount->fs_dir, fd, XFS_IOC_FSCOUNTS,
 							&fscounts)) < 0) {
 			perror("XFS_IOC_FSCOUNTS");
 			close(fd);
 			return 0;
 		}

 		logsize = fsgeo.logstart ? fsgeo.logblocks : 0;
 		count = (fsgeo.datablocks - logsize) * fsgeo.blocksize;
 		free  = fscounts.freedata * fsgeo.blocksize;
 		*bcount = BTOBB(count);
 		*bfree  = BTOBB(free);
 		*bused  = BTOBB(count - free);

 		count = fsgeo.rtextents * fsgeo.rtextsize * fsgeo.blocksize;
 		free  = fscounts.freertx * fsgeo.rtextsize * fsgeo.blocksize;
 		*rcount = BTOBB(count);
 		*rfree  = BTOBB(free);
 		*rused  = BTOBB(count - free);
 	} else {
 		count = st.f_blocks * st.f_bsize;
 		free = st.f_bfree * st.f_bsize;
 		*bcount = BTOBB(count);
 		*bfree  = BTOBB(free);
 		*bused  = BTOBB(count - free);

 		*rcount = BTOBB(0);
 		*rfree  = BTOBB(0);
 		*rused  = BTOBB(0);
 	}


 	*icount = st.f_files;
 	*ifree  = st.f_ffree;
 	*iused  = st.f_files - st.f_ffree;

 	close(fd);
 	return 1;
 }

 /*
  * The data and realtime block counts returned (count, used, and
  * free) are all in basic block units.
  */
 static int
 projects_free_space_data(
 	struct fs_path		*path,
 	uint64_t		*bcount,
 	uint64_t		*bused,
 	uint64_t		*bfree,
 	uint64_t		*icount,
 	uint64_t		*iused,
 	uint64_t		*ifree,
 	uint64_t		*rcount,
 	uint64_t		*rused,
 	uint64_t		*rfree)
 {
 	fs_quota_stat_t		qfs;
 	fs_disk_quota_t		d;
 	struct fsxattr		fsx;
 	uint			type = XFS_PROJ_QUOTA;
 	char			*dev = path->fs_name;
 	int			fd;

 	if (xfsquotactl(XFS_GETQSTAT, dev, type, 0, &qfs) < 0 ||
 			!(qfs.qs_flags & XFS_QUOTA_PDQ_ACCT))
 		return 0;

 	if ((fd = open(path->fs_dir, O_RDONLY)) < 0) {
 		exitcode = 1;
 		fprintf(stderr, "%s: cannot open %s: %s\n",
 			progname, path->fs_dir, strerror(errno));
 		return 0;
 	}

 	if ((xfsctl(path->fs_dir, fd, FS_IOC_FSGETXATTR, &fsx)) < 0) {
 		exitcode = 1;
 		perror("FS_IOC_FSGETXATTR");
 		close(fd);
 		return 0;
 	}
 	if (!(fsx.fsx_xflags & FS_XFLAG_PROJINHERIT)) {
 		exitcode = 1;
 		fprintf(stderr, _("%s: project quota flag not set on %s\n"),
 			progname, path->fs_dir);
 		close(fd);
 		return 0;
 	}

 	if (path->fs_prid != fsx.fsx_projid) {
 		exitcode = 1;
 		fprintf(stderr,
 			_("%s: project ID %u (%s) doesn't match ID %u (%s)\n"),
 			progname, path->fs_prid, projects_file,
 			fsx.fsx_projid, path->fs_dir);
 		close(fd);
 		return 0;
 	}

 	xfsquotactl(XFS_QSYNC, dev, type, fsx.fsx_projid, NULL);
 	if (xfsquotactl(XFS_GETQUOTA, dev, type, fsx.fsx_projid, &d) < 0) {
 		perror("XFS_GETQUOTA");
 		close(fd);
 		return 0;
 	}

 	/* If no softlimit is set for any of blk/ino/rt, get actual usage */
 	if (!d.d_blk_softlimit || !d.d_ino_softlimit || !d.d_rtb_softlimit) {
 		mount_free_space_data(path, bcount, bused, bfree,
 				icount, iused, ifree, rcount, rused, rfree);
 	}

 	if (d.d_blk_softlimit) {
 		*bcount = d.d_blk_softlimit;
 		*bfree = (d.d_blk_softlimit - d.d_bcount);
 	}
 	*bused = d.d_bcount;

 	if (d.d_ino_softlimit) {
 		*icount = d.d_ino_softlimit;
 		*ifree = (d.d_ino_softlimit - d.d_icount);
 	}
 	*iused = d.d_icount;

 	if (d.d_rtb_softlimit) {
 		*rcount = d.d_rtb_softlimit;
 		*rfree = (d.d_rtb_softlimit - d.d_rtbcount);
 	}
 	*rused = d.d_rtbcount;

 	close(fd);
 	return 1;
 }

 static int
 free_space(
 	FILE		*fp,
 	uint		form,
 	fs_path_t	*path,
 	uint		flags)
 {
 	uint64_t	bcount, bused, bfree;
 	uint64_t	icount, iused, ifree;
 	uint64_t	rcount, rused, rfree;
 	char		a[8], s[8], u[8], p[8];
 	int		count;

 	count = (path->fs_flags & FS_PROJECT_PATH) ?
 		projects_free_space_data(path, &bcount, &bused, &bfree,
 						&icount, &iused, &ifree,
 						&rcount, &rused, &rfree) :
 		mount_free_space_data(path, &bcount, &bused, &bfree,
 						&icount, &iused, &ifree,
 						&rcount, &rused, &rfree);
 	if (!count)
 		return 0;

 	if (!(flags & NO_HEADER_FLAG)) {
 		fprintf(fp, (flags & HUMAN_FLAG) ?
 			_("Filesystem  ") : _("Filesystem          "));
 		if (form & (XFS_BLOCK_QUOTA|XFS_RTBLOCK_QUOTA))
 			fprintf(fp, (flags & HUMAN_FLAG) ?
 				_("   Size   Used  Avail Use%%") :
 				_(" 1K-blocks       Used  Available  Use%%"));
 		else if (form & XFS_INODE_QUOTA)
 			fprintf(fp, (flags & HUMAN_FLAG) ?
 				_(" Inodes   Used   Free Use%%") :
 				_("    Inodes      IUsed      IFree IUse%%"));
 		fprintf(fp, _(" Pathname\n"));
 	}

 	if (flags & HUMAN_FLAG) {
 		count = fprintf(fp, "%-12s", path->fs_name);
 		if (count > 13)
 			fprintf(fp, "\n%12s", " ");
 	} else {
 		count = fprintf(fp, "%-19s", path->fs_name);
 		if (count > 20)
 			fprintf(fp, "\n%19s", " ");
 	}

 	if (form & XFS_BLOCK_QUOTA) {
 		if (flags & HUMAN_FLAG)
 			fprintf(fp, " %6s %6s %6s %3s%%",
 				bbs_to_string(bcount, s, sizeof(s)),
 				bbs_to_string(bused, u, sizeof(u)),
 				bbs_to_string(bfree, a, sizeof(a)),
 				pct_to_string(bused, bcount, p, sizeof(p)));
 		else
 			fprintf(fp, " %10llu %10llu %10llu  %3s%%",
 				(unsigned long long)bcount >> 1,
 				(unsigned long long)bused >> 1,
 				(unsigned long long)bfree >> 1,
 				pct_to_string(bused, bcount, p, sizeof(p)));
 	} else if (form & XFS_INODE_QUOTA) {
 		if (flags & HUMAN_FLAG)
 			fprintf(fp, " %6s %6s %6s %3s%%",
 				num_to_string(icount, s, sizeof(s)),
 				num_to_string(iused, u, sizeof(u)),
 				num_to_string(ifree, a, sizeof(a)),
 				pct_to_string(iused, icount, p, sizeof(p)));
 		else
 			fprintf(fp, " %10llu %10llu %10llu  %3s%%",
 				(unsigned long long)icount,
 				(unsigned long long)iused,
 				(unsigned long long)ifree,
 				pct_to_string(iused, icount, p, sizeof(p)));
 	} else if (form & XFS_RTBLOCK_QUOTA) {
 		if (flags & HUMAN_FLAG)
 			fprintf(fp, " %6s %6s %6s %3s%%",
 				bbs_to_string(rcount, s, sizeof(s)),
 				bbs_to_string(rused, u, sizeof(u)),
 				bbs_to_string(rfree, a, sizeof(a)),
 				pct_to_string(rused, rcount, p, sizeof(p)));
 		else
 			fprintf(fp, " %10llu %10llu %10llu  %3s%%",
 				(unsigned long long)rcount >> 1,
 				(unsigned long long)rused >> 1,
 				(unsigned long long)rfree >> 1,
 				pct_to_string(rused, rcount, p, sizeof(p)));
 	}
 	fprintf(fp, " %s\n", path->fs_dir);
 	return 1;
 }

 static void
 free_space_list(
 	FILE			*fp,
 	uint			form,
 	char			*dir,
 	uint			flags)
 {
 	fs_cursor_t		cursor;
 	fs_path_t		*path;

 	fs_cursor_initialise(dir, 0, &cursor);
 	while ((path = fs_cursor_next_entry(&cursor))) {
 		if (free_space(fp, form, path, flags))
 			flags |= NO_HEADER_FLAG;
 	}
 }

 static int
 free_f(
 	int		argc,
 	char		**argv)
 {
 	FILE		*fp = NULL;
 	char		*fname = NULL;
 	int		c, flags = 0, form = 0;

 	while ((c = getopt(argc, argv, "bf:hNir")) != EOF) {
 		switch (c) {
 		case 'f':
 			fname = optarg;
 			break;
 		case 'b':
 			form |= XFS_BLOCK_QUOTA;
 			break;
 		case 'i':
 			form |= XFS_INODE_QUOTA;
 			break;
 		case 'r':
 			form |= XFS_RTBLOCK_QUOTA;
 			break;
 		case 'h':
 			flags |= HUMAN_FLAG;
 			break;
 		case 'N':
 			flags |= NO_HEADER_FLAG;
 			break;
 		default:
 			return command_usage(&free_cmd);
 		}
 	}

 	if (!form)
 		form = XFS_BLOCK_QUOTA;

 	if ((fp = fopen_write_secure(fname)) == NULL)
 		return 0;

 	if (argc == optind)
 		free_space_list(fp, form, NULL, flags);
 	else while (argc > optind)
 		free_space_list(fp, form, argv[optind++], flags);

 	if (fname)
 		fclose(fp);
 	return 0;
 }

 void
 free_init(void)
 {
 	free_cmd.name = "df";
 	free_cmd.altname = "free";
 	free_cmd.cfunc = free_f;
 	free_cmd.argmin = 0;
 	free_cmd.argmax = -1;
 	free_cmd.args = _("[-bir] [-hN] [-f file]");
 	free_cmd.oneline = _("show free and used counts for blocks and inodes");
 	free_cmd.help = free_help;
 	free_cmd.flags = CMD_FLAG_FOREIGN_OK;

 	add_command(&free_cmd);
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (c) 2005 Silicon Graphics, Inc.
	* All Rights Reserved.
	*/

	#include <stdbool.h>
	#include "command.h"
	#include "init.h"
	#include "quota.h"
	#include "libfrog/logging.h"
	#include "libfrog/fsgeom.h"

	static cmdinfo_t free_cmd;

	static void
	free_help(void)
	{
	printf(_(
	"\n"
	" reports the number of free disk blocks and inodes\n"
	"\n"
	" This command reports the number of total, used, and available disk blocks.\n"
	" It can optionally report the same set of numbers for inodes and realtime\n"
	" disk blocks, and will report on all known XFS filesystem mount points and\n"
	" project quota paths by default (see 'print' command for a list).\n"
	" -b -- report the block count values\n"
	" -i -- report the inode count values\n"
	" -r -- report the realtime block count values\n"
	" -h -- report in a human-readable format\n"
	" -N -- suppress the header from the output\n"
	"\n"));
	}

	/*
	* The data and realtime block counts returned (count, used, and
	* free) are all in basic block units.
	*/
	static int
	mount_free_space_data(
	struct fs_path *mount,
	uint64_t *bcount,
	uint64_t *bused,
	uint64_t *bfree,
	uint64_t *icount,
	uint64_t *iused,
	uint64_t *ifree,
	uint64_t *rcount,
	uint64_t *rused,
	uint64_t *rfree)
	{
	struct xfs_fsop_counts fscounts;
	struct xfs_fsop_geom fsgeo;
	struct statfs st;
	uint64_t logsize, count, free;
	int fd, ret;

	if ((fd = open(mount->fs_dir, O_RDONLY)) < 0) {
	exitcode = 1;
	fprintf(stderr, "%s: cannot open %s: %s\n",
	progname, mount->fs_dir, strerror(errno));
	return 0;
	}

	if (platform_fstatfs(fd, &st) < 0) {
	perror("fstatfs");
	close(fd);
	return 0;
	}

	if (!(mount->fs_flags & FS_FOREIGN)) {
	ret = -xfrog_geometry(fd, &fsgeo);
	if (ret) {
	xfrog_perror(ret, "XFS_IOC_FSGEOMETRY");
	close(fd);
	return 0;
	}
	if ((xfsctl(mount->fs_dir, fd, XFS_IOC_FSCOUNTS,
	&fscounts)) < 0) {
	perror("XFS_IOC_FSCOUNTS");
	close(fd);
	return 0;
	}

	logsize = fsgeo.logstart ? fsgeo.logblocks : 0;
	count = (fsgeo.datablocks - logsize) * fsgeo.blocksize;
	free = fscounts.freedata * fsgeo.blocksize;
	*bcount = BTOBB(count);
	*bfree = BTOBB(free);
	*bused = BTOBB(count - free);

	count = fsgeo.rtextents * fsgeo.rtextsize * fsgeo.blocksize;
	free = fscounts.freertx * fsgeo.rtextsize * fsgeo.blocksize;
	*rcount = BTOBB(count);
	*rfree = BTOBB(free);
	*rused = BTOBB(count - free);
	} else {
	count = st.f_blocks * st.f_bsize;
	free = st.f_bfree * st.f_bsize;
	*bcount = BTOBB(count);
	*bfree = BTOBB(free);
	*bused = BTOBB(count - free);

	*rcount = BTOBB(0);
	*rfree = BTOBB(0);
	*rused = BTOBB(0);
	}


	*icount = st.f_files;
	*ifree = st.f_ffree;
	*iused = st.f_files - st.f_ffree;

	close(fd);
	return 1;
	}

	/*
	* The data and realtime block counts returned (count, used, and
	* free) are all in basic block units.
	*/
	static int
	projects_free_space_data(
	struct fs_path *path,
	uint64_t *bcount,
	uint64_t *bused,
	uint64_t *bfree,
	uint64_t *icount,
	uint64_t *iused,
	uint64_t *ifree,
	uint64_t *rcount,
	uint64_t *rused,
	uint64_t *rfree)
	{
	fs_quota_stat_t qfs;
	fs_disk_quota_t d;
	struct fsxattr fsx;
	uint type = XFS_PROJ_QUOTA;
	char *dev = path->fs_name;
	int fd;

	if (xfsquotactl(XFS_GETQSTAT, dev, type, 0, &qfs) < 0 \|\|
	!(qfs.qs_flags & XFS_QUOTA_PDQ_ACCT))
	return 0;

	if ((fd = open(path->fs_dir, O_RDONLY)) < 0) {
	exitcode = 1;
	fprintf(stderr, "%s: cannot open %s: %s\n",
	progname, path->fs_dir, strerror(errno));
	return 0;
	}

	if ((xfsctl(path->fs_dir, fd, FS_IOC_FSGETXATTR, &fsx)) < 0) {
	exitcode = 1;
	perror("FS_IOC_FSGETXATTR");
	close(fd);
	return 0;
	}
	if (!(fsx.fsx_xflags & FS_XFLAG_PROJINHERIT)) {
	exitcode = 1;
	fprintf(stderr, _("%s: project quota flag not set on %s\n"),
	progname, path->fs_dir);
	close(fd);
	return 0;
	}

	if (path->fs_prid != fsx.fsx_projid) {
	exitcode = 1;
	fprintf(stderr,
	_("%s: project ID %u (%s) doesn't match ID %u (%s)\n"),
	progname, path->fs_prid, projects_file,
	fsx.fsx_projid, path->fs_dir);
	close(fd);
	return 0;
	}

	xfsquotactl(XFS_QSYNC, dev, type, fsx.fsx_projid, NULL);
	if (xfsquotactl(XFS_GETQUOTA, dev, type, fsx.fsx_projid, &d) < 0) {
	perror("XFS_GETQUOTA");
	close(fd);
	return 0;
	}

	/* If no softlimit is set for any of blk/ino/rt, get actual usage */
	if (!d.d_blk_softlimit \|\| !d.d_ino_softlimit \|\| !d.d_rtb_softlimit) {
	mount_free_space_data(path, bcount, bused, bfree,
	icount, iused, ifree, rcount, rused, rfree);
	}

	if (d.d_blk_softlimit) {
	*bcount = d.d_blk_softlimit;
	*bfree = (d.d_blk_softlimit - d.d_bcount);
	}
	*bused = d.d_bcount;

	if (d.d_ino_softlimit) {
	*icount = d.d_ino_softlimit;
	*ifree = (d.d_ino_softlimit - d.d_icount);
	}
	*iused = d.d_icount;

	if (d.d_rtb_softlimit) {
	*rcount = d.d_rtb_softlimit;
	*rfree = (d.d_rtb_softlimit - d.d_rtbcount);
	}
	*rused = d.d_rtbcount;

	close(fd);
	return 1;
	}

	static int
	free_space(
	FILE *fp,
	uint form,
	fs_path_t *path,
	uint flags)
	{
	uint64_t bcount, bused, bfree;
	uint64_t icount, iused, ifree;
	uint64_t rcount, rused, rfree;
	char a[8], s[8], u[8], p[8];
	int count;

	count = (path->fs_flags & FS_PROJECT_PATH) ?
	projects_free_space_data(path, &bcount, &bused, &bfree,
	&icount, &iused, &ifree,
	&rcount, &rused, &rfree) :
	mount_free_space_data(path, &bcount, &bused, &bfree,
	&icount, &iused, &ifree,
	&rcount, &rused, &rfree);
	if (!count)
	return 0;

	if (!(flags & NO_HEADER_FLAG)) {
	fprintf(fp, (flags & HUMAN_FLAG) ?
	_("Filesystem ") : _("Filesystem "));
	if (form & (XFS_BLOCK_QUOTA\|XFS_RTBLOCK_QUOTA))
	fprintf(fp, (flags & HUMAN_FLAG) ?
	_(" Size Used Avail Use%%") :
	_(" 1K-blocks Used Available Use%%"));
	else if (form & XFS_INODE_QUOTA)
	fprintf(fp, (flags & HUMAN_FLAG) ?
	_(" Inodes Used Free Use%%") :
	_(" Inodes IUsed IFree IUse%%"));
	fprintf(fp, _(" Pathname\n"));
	}

	if (flags & HUMAN_FLAG) {
	count = fprintf(fp, "%-12s", path->fs_name);
	if (count > 13)
	fprintf(fp, "\n%12s", " ");
	} else {
	count = fprintf(fp, "%-19s", path->fs_name);
	if (count > 20)
	fprintf(fp, "\n%19s", " ");
	}

	if (form & XFS_BLOCK_QUOTA) {
	if (flags & HUMAN_FLAG)
	fprintf(fp, " %6s %6s %6s %3s%%",
	bbs_to_string(bcount, s, sizeof(s)),
	bbs_to_string(bused, u, sizeof(u)),
	bbs_to_string(bfree, a, sizeof(a)),
	pct_to_string(bused, bcount, p, sizeof(p)));
	else
	fprintf(fp, " %10llu %10llu %10llu %3s%%",
	(unsigned long long)bcount >> 1,
	(unsigned long long)bused >> 1,
	(unsigned long long)bfree >> 1,
	pct_to_string(bused, bcount, p, sizeof(p)));
	} else if (form & XFS_INODE_QUOTA) {
	if (flags & HUMAN_FLAG)
	fprintf(fp, " %6s %6s %6s %3s%%",
	num_to_string(icount, s, sizeof(s)),
	num_to_string(iused, u, sizeof(u)),
	num_to_string(ifree, a, sizeof(a)),
	pct_to_string(iused, icount, p, sizeof(p)));
	else
	fprintf(fp, " %10llu %10llu %10llu %3s%%",
	(unsigned long long)icount,
	(unsigned long long)iused,
	(unsigned long long)ifree,
	pct_to_string(iused, icount, p, sizeof(p)));
	} else if (form & XFS_RTBLOCK_QUOTA) {
	if (flags & HUMAN_FLAG)
	fprintf(fp, " %6s %6s %6s %3s%%",
	bbs_to_string(rcount, s, sizeof(s)),
	bbs_to_string(rused, u, sizeof(u)),
	bbs_to_string(rfree, a, sizeof(a)),
	pct_to_string(rused, rcount, p, sizeof(p)));
	else
	fprintf(fp, " %10llu %10llu %10llu %3s%%",
	(unsigned long long)rcount >> 1,
	(unsigned long long)rused >> 1,
	(unsigned long long)rfree >> 1,
	pct_to_string(rused, rcount, p, sizeof(p)));
	}
	fprintf(fp, " %s\n", path->fs_dir);
	return 1;
	}

	static void
	free_space_list(
	FILE *fp,
	uint form,
	char *dir,
	uint flags)
	{
	fs_cursor_t cursor;
	fs_path_t *path;

	fs_cursor_initialise(dir, 0, &cursor);
	while ((path = fs_cursor_next_entry(&cursor))) {
	if (free_space(fp, form, path, flags))
	flags \|= NO_HEADER_FLAG;
	}
	}

	static int
	free_f(
	int argc,
	char **argv)
	{
	FILE *fp = NULL;
	char *fname = NULL;
	int c, flags = 0, form = 0;

	while ((c = getopt(argc, argv, "bf:hNir")) != EOF) {
	switch (c) {
	case 'f':
	fname = optarg;
	break;
	case 'b':
	form \|= XFS_BLOCK_QUOTA;
	break;
	case 'i':
	form \|= XFS_INODE_QUOTA;
	break;
	case 'r':
	form \|= XFS_RTBLOCK_QUOTA;
	break;
	case 'h':
	flags \|= HUMAN_FLAG;
	break;
	case 'N':
	flags \|= NO_HEADER_FLAG;
	break;
	default:
	return command_usage(&free_cmd);
	}
	}

	if (!form)
	form = XFS_BLOCK_QUOTA;

	if ((fp = fopen_write_secure(fname)) == NULL)
	return 0;

	if (argc == optind)
	free_space_list(fp, form, NULL, flags);
	else while (argc > optind)
	free_space_list(fp, form, argv[optind++], flags);

	if (fname)
	fclose(fp);
	return 0;
	}

	void
	free_init(void)
	{
	free_cmd.name = "df";
	free_cmd.altname = "free";
	free_cmd.cfunc = free_f;
	free_cmd.argmin = 0;
	free_cmd.argmax = -1;
	free_cmd.args = _("[-bir] [-hN] [-f file]");
	free_cmd.oneline = _("show free and used counts for blocks and inodes");
	free_cmd.help = free_help;
	free_cmd.flags = CMD_FLAG_FOREIGN_OK;

	add_command(&free_cmd);
	}