[thirdparty/xfsprogs-dev.git] / io / prealloc.c

/*
 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#if defined(HAVE_FALLOCATE)
#include <linux/falloc.h>
#endif
#include "command.h"
#include "input.h"
#include "init.h"
#include "io.h"

#ifndef FALLOC_FL_PUNCH_HOLE
#define FALLOC_FL_PUNCH_HOLE	0x02
#endif

#ifndef FALLOC_FL_COLLAPSE_RANGE
#define FALLOC_FL_COLLAPSE_RANGE 0x08
#endif

#ifndef FALLOC_FL_ZERO_RANGE
#define FALLOC_FL_ZERO_RANGE 0x10
#endif

#ifndef FALLOC_FL_INSERT_RANGE
#define FALLOC_FL_INSERT_RANGE 0x20
#endif

#ifndef FALLOC_FL_UNSHARE_RANGE
#define FALLOC_FL_UNSHARE_RANGE 0x40
#endif

static cmdinfo_t allocsp_cmd;
static cmdinfo_t freesp_cmd;
static cmdinfo_t resvsp_cmd;
static cmdinfo_t unresvsp_cmd;
static cmdinfo_t zero_cmd;
#if defined(HAVE_FALLOCATE)
static cmdinfo_t falloc_cmd;
static cmdinfo_t fpunch_cmd;
static cmdinfo_t fcollapse_cmd;
static cmdinfo_t finsert_cmd;
static cmdinfo_t fzero_cmd;
#endif

static int
offset_length(
	char		*offset,
	char		*length,
	xfs_flock64_t	*segment)
{
	size_t		blocksize, sectsize;

	init_cvtnum(&blocksize, &sectsize);
	memset(segment, 0, sizeof(*segment));
	segment->l_whence = SEEK_SET;
	segment->l_start = cvtnum(blocksize, sectsize, offset);
	if (segment->l_start < 0) {
		printf(_("non-numeric offset argument -- %s\n"), offset);
		return 0;
	}
	segment->l_len = cvtnum(blocksize, sectsize, length);
	if (segment->l_len < 0) {
		printf(_("non-numeric length argument -- %s\n"), length);
		return 0;
	}
	return 1;
}

static int
allocsp_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;

	if (!offset_length(argv[1], argv[2], &segment))
		return 0;

	if (xfsctl(file->name, file->fd, XFS_IOC_ALLOCSP64, &segment) < 0) {
		perror("XFS_IOC_ALLOCSP64");
		return 0;
	}
	return 0;
}

static int
freesp_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;

	if (!offset_length(argv[1], argv[2], &segment))
		return 0;

	if (xfsctl(file->name, file->fd, XFS_IOC_FREESP64, &segment) < 0) {
		perror("XFS_IOC_FREESP64");
		return 0;
	}
	return 0;
}

static int
resvsp_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;

	if (!offset_length(argv[1], argv[2], &segment))
		return 0;

	if (xfsctl(file->name, file->fd, XFS_IOC_RESVSP64, &segment) < 0) {
		perror("XFS_IOC_RESVSP64");
		return 0;
	}
	return 0;
}

static int
unresvsp_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;

	if (!offset_length(argv[1], argv[2], &segment))
		return 0;

	if (xfsctl(file->name, file->fd, XFS_IOC_UNRESVSP64, &segment) < 0) {
		perror("XFS_IOC_UNRESVSP64");
		return 0;
	}
	return 0;
}

static int
zero_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;

	if (!offset_length(argv[1], argv[2], &segment))
		return 0;

	if (xfsctl(file->name, file->fd, XFS_IOC_ZERO_RANGE, &segment) < 0) {
		perror("XFS_IOC_ZERO_RANGE");
		return 0;
	}
	return 0;
}


#if defined (HAVE_FALLOCATE)
static void
falloc_help(void)
{
	printf(_(
"\n"
" modifies space associated with part of a file via fallocate"
"\n"
" Example:\n"
" 'falloc 0 1m' - fills all holes within the first megabyte\n"
"\n"
" falloc uses the fallocate system call to alter space allocations in the\n"
" open file.  The following operations are supported:\n"
" All the file offsets are in units of bytes.\n"
" -c -- collapses the given range.\n"
" -i -- inserts a hole into the given range of the file.\n"
" -k -- do not change file size.\n"
" -p -- unmap the given range from the file.\n"
" -u -- unshare shared extents in the given range.\n"
"\n"));
}

static int
fallocate_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;
	int		mode = 0;
	int		c;

	while ((c = getopt(argc, argv, "cikpu")) != EOF) {
		switch (c) {
		case 'c':
			mode = FALLOC_FL_COLLAPSE_RANGE;
			break;
		case 'i':
			mode = FALLOC_FL_INSERT_RANGE;
			break;
		case 'k':
			mode = FALLOC_FL_KEEP_SIZE;
			break;
		case 'p':
			mode = FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE;
			break;
		case 'u':
			mode = FALLOC_FL_UNSHARE_RANGE;
			break;
		default:
			command_usage(&falloc_cmd);
		}
	}
        if (optind != argc - 2)
                return command_usage(&falloc_cmd);

	if (!offset_length(argv[optind], argv[optind+1], &segment))
		return 0;

	if (fallocate(file->fd, mode,
			segment.l_start, segment.l_len)) {
		perror("fallocate");
		return 0;
	}
	return 0;
}

static int
fpunch_f(
	 int		argc,
	 char		**argv)
{
	xfs_flock64_t	segment;
	int		mode = FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE;

	if (!offset_length(argv[1], argv[2], &segment))
		return 0;

	if (fallocate(file->fd, mode,
			segment.l_start, segment.l_len)) {
		perror("fallocate");
		return 0;
	}
	return 0;
}

static int
fcollapse_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;
	int		mode = FALLOC_FL_COLLAPSE_RANGE;

	if (!offset_length(argv[1], argv[2], &segment))
		return 0;

	if (fallocate(file->fd, mode,
			segment.l_start, segment.l_len)) {
		perror("fallocate");
		return 0;
	}
	return 0;
}

static int
finsert_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;
	int		mode = FALLOC_FL_INSERT_RANGE;

	if (!offset_length(argv[1], argv[2], &segment))
		return 0;

	if (fallocate(file->fd, mode,
			segment.l_start, segment.l_len)) {
		perror("fallocate");
		return 0;
	}
	return 0;
}

static int
fzero_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;
	int		mode = FALLOC_FL_ZERO_RANGE;
	int		index = 1;

	if (strncmp(argv[index], "-k", 3) == 0) {
		mode |= FALLOC_FL_KEEP_SIZE;
		index++;
	}

	if (!offset_length(argv[index], argv[index + 1], &segment))
		return 0;

	if (fallocate(file->fd, mode,
			segment.l_start, segment.l_len)) {
		perror("fallocate");
		return 0;
	}
	return 0;
}

static int
funshare_f(
	int		argc,
	char		**argv)
{
	xfs_flock64_t	segment;
	int		mode = FALLOC_FL_UNSHARE_RANGE;
	int		index = 1;

	if (!offset_length(argv[index], argv[index + 1], &segment))
		return 0;

	if (fallocate(file->fd, mode,
			segment.l_start, segment.l_len)) {
		perror("fallocate");
		return 0;
	}
	return 0;
}
#endif	/* HAVE_FALLOCATE */

void
prealloc_init(void)
{
	allocsp_cmd.name = "allocsp";
	allocsp_cmd.cfunc = allocsp_f;
	allocsp_cmd.argmin = 2;
	allocsp_cmd.argmax = 2;
	allocsp_cmd.flags = CMD_NOMAP_OK;
	allocsp_cmd.args = _("off len");
	allocsp_cmd.oneline = _("allocates zeroed space for part of a file");

	freesp_cmd.name = "freesp";
	freesp_cmd.cfunc = freesp_f;
	freesp_cmd.argmin = 2;
	freesp_cmd.argmax = 2;
	freesp_cmd.flags = CMD_NOMAP_OK;
	freesp_cmd.args = _("off len");
	freesp_cmd.oneline = _("frees space associated with part of a file");

	resvsp_cmd.name = "resvsp";
	resvsp_cmd.cfunc = resvsp_f;
	resvsp_cmd.argmin = 2;
	resvsp_cmd.argmax = 2;
	resvsp_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
	resvsp_cmd.args = _("off len");
	resvsp_cmd.oneline =
		_("reserves space associated with part of a file");

	unresvsp_cmd.name = "unresvsp";
	unresvsp_cmd.cfunc = unresvsp_f;
	unresvsp_cmd.argmin = 2;
	unresvsp_cmd.argmax = 2;
	unresvsp_cmd.args = _("off len");
	unresvsp_cmd.flags = CMD_NOMAP_OK;
	unresvsp_cmd.oneline =
		_("frees reserved space associated with part of a file");

	zero_cmd.name = "zero";
	zero_cmd.cfunc = zero_f;
	zero_cmd.argmin = 2;
	zero_cmd.argmax = 2;
	zero_cmd.flags = CMD_NOMAP_OK;
	zero_cmd.args = _("off len");
	zero_cmd.oneline =
		_("Converts the given range of a file to allocated zeros");

	add_command(&allocsp_cmd);
	add_command(&freesp_cmd);
	add_command(&resvsp_cmd);
	add_command(&unresvsp_cmd);
	add_command(&zero_cmd);

#if defined (HAVE_FALLOCATE)
	falloc_cmd.name = "falloc";
	falloc_cmd.cfunc = fallocate_f;
	falloc_cmd.argmin = 2;
	falloc_cmd.argmax = -1;
	falloc_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
	falloc_cmd.args = _("[-c] [-k] [-p] [-u] off len");
	falloc_cmd.oneline =
	_("allocates space associated with part of a file via fallocate");
	falloc_cmd.help = falloc_help;
	add_command(&falloc_cmd);

	fpunch_cmd.name = "fpunch";
	fpunch_cmd.cfunc = fpunch_f;
	fpunch_cmd.argmin = 2;
	fpunch_cmd.argmax = 2;
	fpunch_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
	fpunch_cmd.args = _("off len");
	fpunch_cmd.oneline =
	_("de-allocates space assocated with part of a file via fallocate");
	add_command(&fpunch_cmd);

	fcollapse_cmd.name = "fcollapse";
	fcollapse_cmd.cfunc = fcollapse_f;
	fcollapse_cmd.argmin = 2;
	fcollapse_cmd.argmax = 2;
	fcollapse_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
	fcollapse_cmd.args = _("off len");
	fcollapse_cmd.oneline =
	_("de-allocates space and eliminates the hole by shifting extents");
	add_command(&fcollapse_cmd);

	finsert_cmd.name = "finsert";
	finsert_cmd.cfunc = finsert_f;
	finsert_cmd.argmin = 2;
	finsert_cmd.argmax = 2;
	finsert_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
	finsert_cmd.args = _("off len");
	finsert_cmd.oneline =
	_("creates new space for writing within file by shifting extents");
	add_command(&finsert_cmd);

	fzero_cmd.name = "fzero";
	fzero_cmd.cfunc = fzero_f;
	fzero_cmd.argmin = 2;
	fzero_cmd.argmax = 3;
	fzero_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
	fzero_cmd.args = _("[-k] off len");
	fzero_cmd.oneline =
	_("zeroes space and eliminates holes by preallocating");
	add_command(&fzero_cmd);

	fzero_cmd.name = "funshare";
	fzero_cmd.cfunc = funshare_f;
	fzero_cmd.argmin = 2;
	fzero_cmd.argmax = 2;
	fzero_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
	fzero_cmd.args = _("off len");
	fzero_cmd.oneline =
	_("unshares shared blocks within the range");
	add_command(&fzero_cmd);
#endif	/* HAVE_FALLOCATE */
}
Commit	Line	Data
e246ba5f	1	/*
da23017d NS	2	* Copyright (c) 2003-2005 Silicon Graphics, Inc.
da23017d NS	3	* All Rights Reserved.
dfc130f3	4	*
da23017d NS	5	* This program is free software; you can redistribute it and/or
da23017d NS	6	* modify it under the terms of the GNU General Public License as
e246ba5f	7	* published by the Free Software Foundation.
dfc130f3	8	*
da23017d NS	9	* This program is distributed in the hope that it would be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
dfc130f3	13	*
da23017d NS	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write the Free Software Foundation,
	16	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
e246ba5f NS	17	*/
e246ba5f NS	18
c0b5232a ES	19	#if defined(HAVE_FALLOCATE)
	20	#include <linux/falloc.h>
	21	#endif
6b803e5a CH	22	#include "command.h"
6b803e5a CH	23	#include "input.h"
e246ba5f	24	#include "init.h"
48c46ee3	25	#include "io.h"
e246ba5f	26
bda4979e CH	27	#ifndef FALLOC_FL_PUNCH_HOLE
	28	#define FALLOC_FL_PUNCH_HOLE 0x02
	29	#endif
	30
ca692f16 NJ	31	#ifndef FALLOC_FL_COLLAPSE_RANGE
	32	#define FALLOC_FL_COLLAPSE_RANGE 0x08
	33	#endif
	34
938904c4 LC	35	#ifndef FALLOC_FL_ZERO_RANGE
	36	#define FALLOC_FL_ZERO_RANGE 0x10
	37	#endif
	38
555bc8cc NJ	39	#ifndef FALLOC_FL_INSERT_RANGE
	40	#define FALLOC_FL_INSERT_RANGE 0x20
	41	#endif
	42
3825c565 DW	43	#ifndef FALLOC_FL_UNSHARE_RANGE
	44	#define FALLOC_FL_UNSHARE_RANGE 0x40
	45	#endif
	46
e246ba5f NS	47	static cmdinfo_t allocsp_cmd;
	48	static cmdinfo_t freesp_cmd;
	49	static cmdinfo_t resvsp_cmd;
	50	static cmdinfo_t unresvsp_cmd;
72ec2b76	51	static cmdinfo_t zero_cmd;
c0b5232a ES	52	#if defined(HAVE_FALLOCATE)
c0b5232a ES	53	static cmdinfo_t falloc_cmd;
d675ae8e	54	static cmdinfo_t fpunch_cmd;
ca692f16	55	static cmdinfo_t fcollapse_cmd;
555bc8cc	56	static cmdinfo_t finsert_cmd;
938904c4	57	static cmdinfo_t fzero_cmd;
c0b5232a	58	#endif
e246ba5f NS	59
	60	static int
	61	offset_length(
	62	char *offset,
	63	char *length,
	64	xfs_flock64_t *segment)
	65	{
2c2f6d79	66	size_t blocksize, sectsize;
48c46ee3 NS	67
48c46ee3 NS	68	init_cvtnum(&blocksize, &sectsize);
e246ba5f NS	69	memset(segment, 0, sizeof(*segment));
e246ba5f NS	70	segment->l_whence = SEEK_SET;
48c46ee3	71	segment->l_start = cvtnum(blocksize, sectsize, offset);
638473d8	72	if (segment->l_start < 0) {
e246ba5f NS	73	printf(_("non-numeric offset argument -- %s\n"), offset);
	74	return 0;
	75	}
48c46ee3	76	segment->l_len = cvtnum(blocksize, sectsize, length);
638473d8	77	if (segment->l_len < 0) {
e246ba5f NS	78	printf(_("non-numeric length argument -- %s\n"), length);
	79	return 0;
	80	}
	81	return 1;
	82	}
	83
	84	static int
	85	allocsp_f(
	86	int argc,
	87	char **argv)
	88	{
	89	xfs_flock64_t segment;
	90
	91	if (!offset_length(argv[1], argv[2], &segment))
	92	return 0;
	93
48c46ee3 NS	94	if (xfsctl(file->name, file->fd, XFS_IOC_ALLOCSP64, &segment) < 0) {
48c46ee3 NS	95	perror("XFS_IOC_ALLOCSP64");
e246ba5f NS	96	return 0;
	97	}
	98	return 0;
	99	}
	100
	101	static int
	102	freesp_f(
	103	int argc,
	104	char **argv)
	105	{
	106	xfs_flock64_t segment;
	107
	108	if (!offset_length(argv[1], argv[2], &segment))
	109	return 0;
	110
48c46ee3 NS	111	if (xfsctl(file->name, file->fd, XFS_IOC_FREESP64, &segment) < 0) {
48c46ee3 NS	112	perror("XFS_IOC_FREESP64");
e246ba5f NS	113	return 0;
	114	}
	115	return 0;
	116	}
	117
	118	static int
	119	resvsp_f(
	120	int argc,
	121	char **argv)
	122	{
	123	xfs_flock64_t segment;
	124
	125	if (!offset_length(argv[1], argv[2], &segment))
	126	return 0;
	127
48c46ee3 NS	128	if (xfsctl(file->name, file->fd, XFS_IOC_RESVSP64, &segment) < 0) {
48c46ee3 NS	129	perror("XFS_IOC_RESVSP64");
e246ba5f NS	130	return 0;
	131	}
	132	return 0;
	133	}
	134
	135	static int
	136	unresvsp_f(
	137	int argc,
	138	char **argv)
	139	{
	140	xfs_flock64_t segment;
	141
	142	if (!offset_length(argv[1], argv[2], &segment))
	143	return 0;
	144
48c46ee3 NS	145	if (xfsctl(file->name, file->fd, XFS_IOC_UNRESVSP64, &segment) < 0) {
48c46ee3 NS	146	perror("XFS_IOC_UNRESVSP64");
e246ba5f NS	147	return 0;
	148	}
	149	return 0;
	150	}
	151
72ec2b76 DC	152	static int
	153	zero_f(
	154	int argc,
	155	char **argv)
	156	{
	157	xfs_flock64_t segment;
	158
	159	if (!offset_length(argv[1], argv[2], &segment))
	160	return 0;
	161
	162	if (xfsctl(file->name, file->fd, XFS_IOC_ZERO_RANGE, &segment) < 0) {
	163	perror("XFS_IOC_ZERO_RANGE");
	164	return 0;
	165	}
	166	return 0;
	167	}
	168
	169
c0b5232a	170	#if defined (HAVE_FALLOCATE)
0c2ed80a DW	171	static void
	172	falloc_help(void)
	173	{
	174	printf(_(
	175	"\n"
	176	" modifies space associated with part of a file via fallocate"
	177	"\n"
	178	" Example:\n"
	179	" 'falloc 0 1m' - fills all holes within the first megabyte\n"
	180	"\n"
	181	" falloc uses the fallocate system call to alter space allocations in the\n"
	182	" open file. The following operations are supported:\n"
	183	" All the file offsets are in units of bytes.\n"
	184	" -c -- collapses the given range.\n"
	185	" -i -- inserts a hole into the given range of the file.\n"
	186	" -k -- do not change file size.\n"
	187	" -p -- unmap the given range from the file.\n"
3825c565	188	" -u -- unshare shared extents in the given range.\n"
0c2ed80a DW	189	"\n"));
	190	}
	191
c0b5232a ES	192	static int
	193	fallocate_f(
	194	int argc,
	195	char **argv)
	196	{
	197	xfs_flock64_t segment;
	198	int mode = 0;
	199	int c;
	200
3825c565	201	while ((c = getopt(argc, argv, "cikpu")) != EOF) {
c0b5232a	202	switch (c) {
ca692f16 NJ	203	case 'c':
	204	mode = FALLOC_FL_COLLAPSE_RANGE;
	205	break;
555bc8cc NJ	206	case 'i':
	207	mode = FALLOC_FL_INSERT_RANGE;
	208	break;
c0b5232a ES	209	case 'k':
	210	mode = FALLOC_FL_KEEP_SIZE;
	211	break;
bda4979e	212	case 'p':
c229968d	213	mode = FALLOC_FL_PUNCH_HOLE\|FALLOC_FL_KEEP_SIZE;
bda4979e	214	break;
3825c565 DW	215	case 'u':
	216	mode = FALLOC_FL_UNSHARE_RANGE;
	217	break;
c0b5232a ES	218	default:
	219	command_usage(&falloc_cmd);
	220	}
	221	}
	222	if (optind != argc - 2)
	223	return command_usage(&falloc_cmd);
	224
	225	if (!offset_length(argv[optind], argv[optind+1], &segment))
	226	return 0;
	227
	228	if (fallocate(file->fd, mode,
	229	segment.l_start, segment.l_len)) {
	230	perror("fallocate");
	231	return 0;
	232	}
	233	return 0;
	234	}
d675ae8e CH	235
	236	static int
	237	fpunch_f(
	238	int argc,
	239	char **argv)
	240	{
	241	xfs_flock64_t segment;
	242	int mode = FALLOC_FL_PUNCH_HOLE \| FALLOC_FL_KEEP_SIZE;
	243
	244	if (!offset_length(argv[1], argv[2], &segment))
	245	return 0;
	246
	247	if (fallocate(file->fd, mode,
	248	segment.l_start, segment.l_len)) {
	249	perror("fallocate");
	250	return 0;
	251	}
	252	return 0;
	253	}
ca692f16 NJ	254
	255	static int
	256	fcollapse_f(
	257	int argc,
	258	char **argv)
	259	{
	260	xfs_flock64_t segment;
	261	int mode = FALLOC_FL_COLLAPSE_RANGE;
	262
	263	if (!offset_length(argv[1], argv[2], &segment))
	264	return 0;
	265
	266	if (fallocate(file->fd, mode,
	267	segment.l_start, segment.l_len)) {
	268	perror("fallocate");
	269	return 0;
	270	}
	271	return 0;
	272	}
938904c4	273
555bc8cc NJ	274	static int
	275	finsert_f(
	276	int argc,
	277	char **argv)
	278	{
	279	xfs_flock64_t segment;
	280	int mode = FALLOC_FL_INSERT_RANGE;
	281
	282	if (!offset_length(argv[1], argv[2], &segment))
	283	return 0;
	284
	285	if (fallocate(file->fd, mode,
	286	segment.l_start, segment.l_len)) {
	287	perror("fallocate");
	288	return 0;
	289	}
	290	return 0;
	291	}
	292
938904c4 LC	293	static int
	294	fzero_f(
	295	int argc,
	296	char **argv)
	297	{
	298	xfs_flock64_t segment;
	299	int mode = FALLOC_FL_ZERO_RANGE;
	300	int index = 1;
	301
	302	if (strncmp(argv[index], "-k", 3) == 0) {
	303	mode \|= FALLOC_FL_KEEP_SIZE;
	304	index++;
	305	}
	306
	307	if (!offset_length(argv[index], argv[index + 1], &segment))
	308	return 0;
	309
	310	if (fallocate(file->fd, mode,
	311	segment.l_start, segment.l_len)) {
	312	perror("fallocate");
	313	return 0;
	314	}
	315	return 0;
	316	}
3825c565 DW	317
	318	static int
	319	funshare_f(
	320	int argc,
	321	char **argv)
	322	{
	323	xfs_flock64_t segment;
	324	int mode = FALLOC_FL_UNSHARE_RANGE;
	325	int index = 1;
	326
	327	if (!offset_length(argv[index], argv[index + 1], &segment))
	328	return 0;
	329
	330	if (fallocate(file->fd, mode,
	331	segment.l_start, segment.l_len)) {
	332	perror("fallocate");
	333	return 0;
	334	}
	335	return 0;
	336	}
d675ae8e	337	#endif /* HAVE_FALLOCATE */
c0b5232a	338
e246ba5f NS	339	void
	340	prealloc_init(void)
	341	{
ad765595	342	allocsp_cmd.name = "allocsp";
e246ba5f NS	343	allocsp_cmd.cfunc = allocsp_f;
	344	allocsp_cmd.argmin = 2;
	345	allocsp_cmd.argmax = 2;
48c46ee3	346	allocsp_cmd.flags = CMD_NOMAP_OK;
e246ba5f NS	347	allocsp_cmd.args = _("off len");
	348	allocsp_cmd.oneline = _("allocates zeroed space for part of a file");
	349
ad765595	350	freesp_cmd.name = "freesp";
e246ba5f NS	351	freesp_cmd.cfunc = freesp_f;
	352	freesp_cmd.argmin = 2;
	353	freesp_cmd.argmax = 2;
48c46ee3	354	freesp_cmd.flags = CMD_NOMAP_OK;
e246ba5f NS	355	freesp_cmd.args = _("off len");
	356	freesp_cmd.oneline = _("frees space associated with part of a file");
	357
ad765595	358	resvsp_cmd.name = "resvsp";
e246ba5f NS	359	resvsp_cmd.cfunc = resvsp_f;
	360	resvsp_cmd.argmin = 2;
	361	resvsp_cmd.argmax = 2;
370f69dd	362	resvsp_cmd.flags = CMD_NOMAP_OK \| CMD_FOREIGN_OK;
e246ba5f NS	363	resvsp_cmd.args = _("off len");
	364	resvsp_cmd.oneline =
	365	_("reserves space associated with part of a file");
	366
ad765595	367	unresvsp_cmd.name = "unresvsp";
e246ba5f NS	368	unresvsp_cmd.cfunc = unresvsp_f;
	369	unresvsp_cmd.argmin = 2;
	370	unresvsp_cmd.argmax = 2;
	371	unresvsp_cmd.args = _("off len");
48c46ee3	372	unresvsp_cmd.flags = CMD_NOMAP_OK;
e246ba5f NS	373	unresvsp_cmd.oneline =
	374	_("frees reserved space associated with part of a file");
	375
ad765595	376	zero_cmd.name = "zero";
72ec2b76 DC	377	zero_cmd.cfunc = zero_f;
	378	zero_cmd.argmin = 2;
	379	zero_cmd.argmax = 2;
	380	zero_cmd.flags = CMD_NOMAP_OK;
	381	zero_cmd.args = _("off len");
	382	zero_cmd.oneline =
	383	_("Converts the given range of a file to allocated zeros");
	384
e246ba5f NS	385	add_command(&allocsp_cmd);
	386	add_command(&freesp_cmd);
	387	add_command(&resvsp_cmd);
	388	add_command(&unresvsp_cmd);
72ec2b76	389	add_command(&zero_cmd);
c0b5232a ES	390
c0b5232a ES	391	#if defined (HAVE_FALLOCATE)
ad765595	392	falloc_cmd.name = "falloc";
c0b5232a ES	393	falloc_cmd.cfunc = fallocate_f;
	394	falloc_cmd.argmin = 2;
	395	falloc_cmd.argmax = -1;
	396	falloc_cmd.flags = CMD_NOMAP_OK \| CMD_FOREIGN_OK;
3825c565	397	falloc_cmd.args = _("[-c] [-k] [-p] [-u] off len");
c0b5232a	398	falloc_cmd.oneline =
938904c4	399	_("allocates space associated with part of a file via fallocate");
0c2ed80a	400	falloc_cmd.help = falloc_help;
c0b5232a	401	add_command(&falloc_cmd);
d675ae8e	402
ad765595	403	fpunch_cmd.name = "fpunch";
d675ae8e CH	404	fpunch_cmd.cfunc = fpunch_f;
	405	fpunch_cmd.argmin = 2;
	406	fpunch_cmd.argmax = 2;
	407	fpunch_cmd.flags = CMD_NOMAP_OK \| CMD_FOREIGN_OK;
	408	fpunch_cmd.args = _("off len");
	409	fpunch_cmd.oneline =
938904c4	410	_("de-allocates space assocated with part of a file via fallocate");
d675ae8e	411	add_command(&fpunch_cmd);
ca692f16 NJ	412
	413	fcollapse_cmd.name = "fcollapse";
	414	fcollapse_cmd.cfunc = fcollapse_f;
	415	fcollapse_cmd.argmin = 2;
	416	fcollapse_cmd.argmax = 2;
	417	fcollapse_cmd.flags = CMD_NOMAP_OK \| CMD_FOREIGN_OK;
	418	fcollapse_cmd.args = _("off len");
	419	fcollapse_cmd.oneline =
	420	_("de-allocates space and eliminates the hole by shifting extents");
	421	add_command(&fcollapse_cmd);
938904c4	422
555bc8cc NJ	423	finsert_cmd.name = "finsert";
	424	finsert_cmd.cfunc = finsert_f;
	425	finsert_cmd.argmin = 2;
	426	finsert_cmd.argmax = 2;
	427	finsert_cmd.flags = CMD_NOMAP_OK \| CMD_FOREIGN_OK;
	428	finsert_cmd.args = _("off len");
	429	finsert_cmd.oneline =
	430	_("creates new space for writing within file by shifting extents");
	431	add_command(&finsert_cmd);
	432
938904c4 LC	433	fzero_cmd.name = "fzero";
	434	fzero_cmd.cfunc = fzero_f;
	435	fzero_cmd.argmin = 2;
	436	fzero_cmd.argmax = 3;
	437	fzero_cmd.flags = CMD_NOMAP_OK \| CMD_FOREIGN_OK;
	438	fzero_cmd.args = _("[-k] off len");
	439	fzero_cmd.oneline =
	440	_("zeroes space and eliminates holes by preallocating");
	441	add_command(&fzero_cmd);
3825c565 DW	442
	443	fzero_cmd.name = "funshare";
	444	fzero_cmd.cfunc = funshare_f;
	445	fzero_cmd.argmin = 2;
	446	fzero_cmd.argmax = 2;
	447	fzero_cmd.flags = CMD_NOMAP_OK \| CMD_FOREIGN_OK;
	448	fzero_cmd.args = _("off len");
	449	fzero_cmd.oneline =
	450	_("unshares shared blocks within the range");
	451	add_command(&fzero_cmd);
d675ae8e	452	#endif /* HAVE_FALLOCATE */
e246ba5f	453	}