[mirror_zfs.git] / module / zfs / zpl_inode.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2011, Lawrence Livermore National Security, LLC.
 */


#include <sys/zfs_vfsops.h>
#include <sys/zfs_vnops.h>
#include <sys/vfs.h>
#include <sys/zpl.h>


static struct dentry *
zpl_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
	cred_t *cr = CRED();
	struct inode *ip;
	int error;

	crhold(cr);
	error = -zfs_lookup(dir, dname(dentry), &ip, 0, cr, NULL, NULL);
	ASSERT3S(error, <=, 0);
	crfree(cr);

	if (error) {
		if (error == -ENOENT)
			return d_splice_alias(NULL, dentry);
		else
			return ERR_PTR(error);
	}

	return d_splice_alias(ip, dentry);
}

static void
zpl_vap_init(vattr_t *vap, struct inode *dir, struct dentry *dentry,
    mode_t mode, cred_t *cr)
{
	vap->va_mask = ATTR_MODE;
	vap->va_mode = mode;
	vap->va_dentry = dentry;
	vap->va_uid = crgetfsuid(cr);

	if (dir && dir->i_mode & S_ISGID) {
		vap->va_gid = dir->i_gid;
		if (S_ISDIR(mode))
			vap->va_mode |= S_ISGID;
	} else {
		vap->va_gid = crgetfsgid(cr);
	}
}

static int
zpl_create(struct inode *dir, struct dentry *dentry, int mode,
    struct nameidata *nd)
{
	cred_t *cr = CRED();
	struct inode *ip;
	vattr_t *vap;
	int error;

	crhold(cr);
	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
	zpl_vap_init(vap, dir, dentry, mode, cr);

	error = -zfs_create(dir, (char *)dentry->d_name.name,
	    vap, 0, mode, &ip, cr, 0, NULL);
	kmem_free(vap, sizeof(vattr_t));
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (error);
}

static int
zpl_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
{
	cred_t *cr = CRED();
	struct inode *ip;
	vattr_t *vap;
	int error;

	/*
	 * We currently expect Linux to supply rdev=0 for all sockets
	 * and fifos, but we want to know if this behavior ever changes.
	 */
	if (S_ISSOCK(mode) || S_ISFIFO(mode))
		ASSERT(rdev == 0);

	crhold(cr);
	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
	zpl_vap_init(vap, dir, dentry, mode, cr);
	vap->va_rdev = rdev;

	error = -zfs_create(dir, (char *)dentry->d_name.name,
	    vap, 0, mode, &ip, cr, 0, NULL);
	kmem_free(vap, sizeof(vattr_t));
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (-error);
}

static int
zpl_unlink(struct inode *dir, struct dentry *dentry)
{
	cred_t *cr = CRED();
	int error;

	crhold(cr);
	error = -zfs_remove(dir, dname(dentry), cr);
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (error);
}

static int
zpl_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
	cred_t *cr = CRED();
	vattr_t *vap;
	struct inode *ip;
	int error;

	crhold(cr);
	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
	zpl_vap_init(vap, dir, dentry, mode | S_IFDIR, cr);

	error = -zfs_mkdir(dir, dname(dentry), vap, &ip, cr, 0, NULL);
	kmem_free(vap, sizeof(vattr_t));
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (error);
}

static int
zpl_rmdir(struct inode * dir, struct dentry *dentry)
{
	cred_t *cr = CRED();
	int error;

	crhold(cr);
	error = -zfs_rmdir(dir, dname(dentry), NULL, cr, 0);
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (error);
}

static int
zpl_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
	int error;

	error = -zfs_getattr_fast(dentry->d_inode, stat);
	ASSERT3S(error, <=, 0);

	return (error);
}

static int
zpl_setattr(struct dentry *dentry, struct iattr *ia)
{
	cred_t *cr = CRED();
	vattr_t *vap;
	int error;

	error = inode_change_ok(dentry->d_inode, ia);
	if (error)
		return (error);

	crhold(cr);
	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
	vap->va_mask = ia->ia_valid & ATTR_IATTR_MASK;
	vap->va_mode = ia->ia_mode;
	vap->va_uid = ia->ia_uid;
	vap->va_gid = ia->ia_gid;
	vap->va_size = ia->ia_size;
	vap->va_atime = ia->ia_atime;
	vap->va_mtime = ia->ia_mtime;
	vap->va_ctime = ia->ia_ctime;

	error = -zfs_setattr(dentry->d_inode, vap, 0, cr);

	kmem_free(vap, sizeof(vattr_t));
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (error);
}

static int
zpl_rename(struct inode *sdip, struct dentry *sdentry,
    struct inode *tdip, struct dentry *tdentry)
{
	cred_t *cr = CRED();
	int error;

	crhold(cr);
	error = -zfs_rename(sdip, dname(sdentry), tdip, dname(tdentry), cr, 0);
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (error);
}

static int
zpl_symlink(struct inode *dir, struct dentry *dentry, const char *name)
{
	cred_t *cr = CRED();
	vattr_t *vap;
	struct inode *ip;
	int error;

	crhold(cr);
	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
	zpl_vap_init(vap, dir, dentry, S_IFLNK | S_IRWXUGO, cr);

	error = -zfs_symlink(dir, dname(dentry), vap, (char *)name, &ip, cr, 0);
	kmem_free(vap, sizeof(vattr_t));
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (error);
}

static void *
zpl_follow_link(struct dentry *dentry, struct nameidata *nd)
{
	cred_t *cr = CRED();
	struct inode *ip = dentry->d_inode;
	struct iovec iov;
	uio_t uio;
	char *link;
	int error;

	crhold(cr);

	iov.iov_len = MAXPATHLEN;
	iov.iov_base = link = kmem_zalloc(MAXPATHLEN, KM_SLEEP);

	uio.uio_iov = &iov;
	uio.uio_iovcnt = 1;
	uio.uio_resid = (MAXPATHLEN - 1);
	uio.uio_segflg = UIO_SYSSPACE;

	error = -zfs_readlink(ip, &uio, cr);
	if (error) {
		kmem_free(link, MAXPATHLEN);
		nd_set_link(nd, ERR_PTR(error));
	} else {
		nd_set_link(nd, link);
	}

	crfree(cr);
	return (NULL);
}

static void
zpl_put_link(struct dentry *dentry, struct nameidata *nd, void *ptr)
{
	char *link;

	link = nd_get_link(nd);
	if (!IS_ERR(link))
		kmem_free(link, MAXPATHLEN);
}

static int
zpl_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
{
	cred_t *cr = CRED();
	struct inode *ip = old_dentry->d_inode;
	int error;

	if (ip->i_nlink >= ZFS_LINK_MAX)
		return -EMLINK;

	crhold(cr);
	ip->i_ctime = CURRENT_TIME_SEC;
	igrab(ip); /* Use ihold() if available */

	error = -zfs_link(dir, ip, dname(dentry), cr);
	if (error) {
		iput(ip);
		goto out;
	}

	d_instantiate(dentry, ip);
out:
	crfree(cr);
	ASSERT3S(error, <=, 0);

	return (error);
}

static void
zpl_truncate_range(struct inode* ip, loff_t start, loff_t end)
{
	cred_t *cr = CRED();
	flock64_t bf;

	ASSERT3S(start, <=, end);

	/*
	 * zfs_freesp() will interpret (len == 0) as meaning "truncate until
	 * the end of the file". We don't want that.
	 */
	if (start == end)
		return;

	crhold(cr);

	bf.l_type = F_WRLCK;
	bf.l_whence = 0;
	bf.l_start = start;
	bf.l_len = end - start;
	bf.l_pid = 0;
	zfs_space(ip, F_FREESP, &bf, FWRITE, start, cr);

	crfree(cr);
}

#ifdef HAVE_INODE_FALLOCATE
static long
zpl_fallocate(struct inode *ip, int mode, loff_t offset, loff_t len)
{
	return zpl_fallocate_common(ip, mode, offset, len);
}
#endif /* HAVE_INODE_FALLOCATE */


const struct inode_operations zpl_inode_operations = {
	.create		= zpl_create,
	.link		= zpl_link,
	.unlink		= zpl_unlink,
	.symlink	= zpl_symlink,
	.mkdir		= zpl_mkdir,
	.rmdir		= zpl_rmdir,
	.mknod		= zpl_mknod,
	.rename		= zpl_rename,
	.setattr	= zpl_setattr,
	.getattr	= zpl_getattr,
	.setxattr	= generic_setxattr,
	.getxattr	= generic_getxattr,
	.removexattr	= generic_removexattr,
	.listxattr	= zpl_xattr_list,
	.truncate_range = zpl_truncate_range,
#ifdef HAVE_INODE_FALLOCATE
	.fallocate	= zpl_fallocate,
#endif /* HAVE_INODE_FALLOCATE */
};

const struct inode_operations zpl_dir_inode_operations = {
	.create		= zpl_create,
	.lookup		= zpl_lookup,
	.link		= zpl_link,
	.unlink		= zpl_unlink,
	.symlink	= zpl_symlink,
	.mkdir		= zpl_mkdir,
	.rmdir		= zpl_rmdir,
	.mknod		= zpl_mknod,
	.rename		= zpl_rename,
	.setattr	= zpl_setattr,
	.getattr	= zpl_getattr,
	.setxattr	= generic_setxattr,
	.getxattr	= generic_getxattr,
	.removexattr	= generic_removexattr,
	.listxattr	= zpl_xattr_list,
};

const struct inode_operations zpl_symlink_inode_operations = {
	.readlink	= generic_readlink,
	.follow_link	= zpl_follow_link,
	.put_link	= zpl_put_link,
	.setattr	= zpl_setattr,
	.getattr	= zpl_getattr,
	.setxattr	= generic_setxattr,
	.getxattr	= generic_getxattr,
	.removexattr	= generic_removexattr,
	.listxattr	= zpl_xattr_list,
};

const struct inode_operations zpl_special_inode_operations = {
	.setattr	= zpl_setattr,
	.getattr	= zpl_getattr,
	.setxattr	= generic_setxattr,
	.getxattr	= generic_getxattr,
	.removexattr	= generic_removexattr,
	.listxattr	= zpl_xattr_list,
};
Commit	Line	Data
ee154f01 BB	1	/*
	2	* CDDL HEADER START
	3	*
	4	* The contents of this file are subject to the terms of the
	5	* Common Development and Distribution License (the "License").
	6	* You may not use this file except in compliance with the License.
	7	*
	8	* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
	9	* or http://www.opensolaris.org/os/licensing.
	10	* See the License for the specific language governing permissions
	11	* and limitations under the License.
	12	*
	13	* When distributing Covered Code, include this CDDL HEADER in each
	14	* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
	15	* If applicable, add the following below this CDDL HEADER, with the
	16	* fields enclosed by brackets "[]" replaced with your own identifying
	17	* information: Portions Copyright [yyyy] [name of copyright owner]
	18	*
	19	* CDDL HEADER END
	20	*/
	21	/*
	22	* Copyright (c) 2011, Lawrence Livermore National Security, LLC.
	23	*/
	24
	25
	26	#include <sys/zfs_vfsops.h>
	27	#include <sys/zfs_vnops.h>
	28	#include <sys/vfs.h>
	29	#include <sys/zpl.h>
	30
	31
	32	static struct dentry *
	33	zpl_lookup(struct inode dir, struct dentry dentry, struct nameidata *nd)
	34	{
81e97e21	35	cred_t *cr = CRED();
ee154f01	36	struct inode *ip;
ee154f01 BB	37	int error;
ee154f01 BB	38
81e97e21	39	crhold(cr);
ee154f01 BB	40	error = -zfs_lookup(dir, dname(dentry), &ip, 0, cr, NULL, NULL);
ee154f01 BB	41	ASSERT3S(error, <=, 0);
81e97e21	42	crfree(cr);
ee154f01 BB	43
	44	if (error) {
	45	if (error == -ENOENT)
	46	return d_splice_alias(NULL, dentry);
	47	else
	48	return ERR_PTR(error);
	49	}
	50
	51	return d_splice_alias(ip, dentry);
	52	}
	53
9fd91dae BB	54	static void
	55	zpl_vap_init(vattr_t vap, struct inode dir, struct dentry *dentry,
	56	mode_t mode, cred_t *cr)
	57	{
	58	vap->va_mask = ATTR_MODE;
	59	vap->va_mode = mode;
	60	vap->va_dentry = dentry;
	61	vap->va_uid = crgetfsuid(cr);
	62
	63	if (dir && dir->i_mode & S_ISGID) {
	64	vap->va_gid = dir->i_gid;
	65	if (S_ISDIR(mode))
	66	vap->va_mode \|= S_ISGID;
	67	} else {
	68	vap->va_gid = crgetfsgid(cr);
	69	}
	70	}
	71
ee154f01 BB	72	static int
	73	zpl_create(struct inode dir, struct dentry dentry, int mode,
	74	struct nameidata *nd)
	75	{
81e97e21	76	cred_t *cr = CRED();
ee154f01 BB	77	struct inode *ip;
	78	vattr_t *vap;
	79	int error;
	80
81e97e21	81	crhold(cr);
ee154f01	82	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
9fd91dae	83	zpl_vap_init(vap, dir, dentry, mode, cr);
ee154f01 BB	84
ee154f01 BB	85	error = -zfs_create(dir, (char *)dentry->d_name.name,
81e97e21	86	vap, 0, mode, &ip, cr, 0, NULL);
ee154f01	87	kmem_free(vap, sizeof(vattr_t));
81e97e21	88	crfree(cr);
ee154f01 BB	89	ASSERT3S(error, <=, 0);
	90
	91	return (error);
	92	}
	93
	94	static int
	95	zpl_mknod(struct inode dir, struct dentry dentry, int mode, dev_t rdev)
	96	{
81e97e21	97	cred_t *cr = CRED();
ee154f01 BB	98	struct inode *ip;
	99	vattr_t *vap;
	100	int error;
	101
aa6d8c10 NB	102	/*
	103	* We currently expect Linux to supply rdev=0 for all sockets
	104	* and fifos, but we want to know if this behavior ever changes.
	105	*/
	106	if (S_ISSOCK(mode) \|\| S_ISFIFO(mode))
	107	ASSERT(rdev == 0);
	108
81e97e21	109	crhold(cr);
ee154f01	110	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
9fd91dae	111	zpl_vap_init(vap, dir, dentry, mode, cr);
ee154f01	112	vap->va_rdev = rdev;
ee154f01 BB	113
ee154f01 BB	114	error = -zfs_create(dir, (char *)dentry->d_name.name,
81e97e21	115	vap, 0, mode, &ip, cr, 0, NULL);
ee154f01	116	kmem_free(vap, sizeof(vattr_t));
81e97e21	117	crfree(cr);
ee154f01 BB	118	ASSERT3S(error, <=, 0);
	119
	120	return (-error);
	121	}
	122
	123	static int
	124	zpl_unlink(struct inode dir, struct dentry dentry)
	125	{
81e97e21	126	cred_t *cr = CRED();
ee154f01 BB	127	int error;
ee154f01 BB	128
81e97e21	129	crhold(cr);
ee154f01	130	error = -zfs_remove(dir, dname(dentry), cr);
81e97e21	131	crfree(cr);
ee154f01 BB	132	ASSERT3S(error, <=, 0);
	133
	134	return (error);
	135	}
	136
	137	static int
	138	zpl_mkdir(struct inode dir, struct dentry dentry, int mode)
	139	{
81e97e21	140	cred_t *cr = CRED();
ee154f01 BB	141	vattr_t *vap;
	142	struct inode *ip;
	143	int error;
	144
81e97e21	145	crhold(cr);
ee154f01	146	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
9fd91dae	147	zpl_vap_init(vap, dir, dentry, mode \| S_IFDIR, cr);
ee154f01 BB	148
ee154f01 BB	149	error = -zfs_mkdir(dir, dname(dentry), vap, &ip, cr, 0, NULL);
ee154f01	150	kmem_free(vap, sizeof(vattr_t));
81e97e21	151	crfree(cr);
ee154f01 BB	152	ASSERT3S(error, <=, 0);
	153
	154	return (error);
	155	}
	156
	157	static int
	158	zpl_rmdir(struct inode * dir, struct dentry *dentry)
	159	{
81e97e21	160	cred_t *cr = CRED();
ee154f01 BB	161	int error;
ee154f01 BB	162
81e97e21	163	crhold(cr);
ee154f01	164	error = -zfs_rmdir(dir, dname(dentry), NULL, cr, 0);
81e97e21	165	crfree(cr);
ee154f01 BB	166	ASSERT3S(error, <=, 0);
	167
	168	return (error);
	169	}
	170
	171	static int
	172	zpl_getattr(struct vfsmount mnt, struct dentry dentry, struct kstat *stat)
	173	{
ee154f01 BB	174	int error;
ee154f01 BB	175
057e8eee	176	error = -zfs_getattr_fast(dentry->d_inode, stat);
ee154f01 BB	177	ASSERT3S(error, <=, 0);
	178
	179	return (error);
	180	}
	181
	182	static int
5484965a	183	zpl_setattr(struct dentry dentry, struct iattr ia)
ee154f01	184	{
81e97e21	185	cred_t *cr = CRED();
5484965a	186	vattr_t *vap;
ee154f01 BB	187	int error;
ee154f01 BB	188
5484965a	189	error = inode_change_ok(dentry->d_inode, ia);
ee154f01 BB	190	if (error)
	191	return (error);
	192
81e97e21	193	crhold(cr);
5484965a BB	194	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
	195	vap->va_mask = ia->ia_valid & ATTR_IATTR_MASK;
	196	vap->va_mode = ia->ia_mode;
	197	vap->va_uid = ia->ia_uid;
	198	vap->va_gid = ia->ia_gid;
	199	vap->va_size = ia->ia_size;
	200	vap->va_atime = ia->ia_atime;
	201	vap->va_mtime = ia->ia_mtime;
	202	vap->va_ctime = ia->ia_ctime;
	203
	204	error = -zfs_setattr(dentry->d_inode, vap, 0, cr);
	205
	206	kmem_free(vap, sizeof(vattr_t));
81e97e21	207	crfree(cr);
ee154f01 BB	208	ASSERT3S(error, <=, 0);
ee154f01 BB	209
5484965a	210	return (error);
ee154f01 BB	211	}
	212
	213	static int
	214	zpl_rename(struct inode sdip, struct dentry sdentry,
	215	struct inode tdip, struct dentry tdentry)
	216	{
81e97e21	217	cred_t *cr = CRED();
ee154f01 BB	218	int error;
ee154f01 BB	219
81e97e21	220	crhold(cr);
ee154f01	221	error = -zfs_rename(sdip, dname(sdentry), tdip, dname(tdentry), cr, 0);
81e97e21	222	crfree(cr);
ee154f01 BB	223	ASSERT3S(error, <=, 0);
	224
	225	return (error);
	226	}
	227
	228	static int
	229	zpl_symlink(struct inode dir, struct dentry dentry, const char *name)
	230	{
81e97e21	231	cred_t *cr = CRED();
ee154f01 BB	232	vattr_t *vap;
	233	struct inode *ip;
	234	int error;
	235
81e97e21	236	crhold(cr);
ee154f01	237	vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
9fd91dae	238	zpl_vap_init(vap, dir, dentry, S_IFLNK \| S_IRWXUGO, cr);
ee154f01 BB	239
ee154f01 BB	240	error = -zfs_symlink(dir, dname(dentry), vap, (char *)name, &ip, cr, 0);
ee154f01	241	kmem_free(vap, sizeof(vattr_t));
81e97e21	242	crfree(cr);
ee154f01 BB	243	ASSERT3S(error, <=, 0);
	244
	245	return (error);
	246	}
	247
	248	static void *
	249	zpl_follow_link(struct dentry dentry, struct nameidata nd)
	250	{
81e97e21	251	cred_t *cr = CRED();
8b4f9a2d BB	252	struct inode *ip = dentry->d_inode;
	253	struct iovec iov;
	254	uio_t uio;
	255	char *link;
8b4f9a2d BB	256	int error;
8b4f9a2d BB	257
81e97e21	258	crhold(cr);
8b4f9a2d BB	259
	260	iov.iov_len = MAXPATHLEN;
	261	iov.iov_base = link = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
	262
	263	uio.uio_iov = &iov;
	264	uio.uio_iovcnt = 1;
	265	uio.uio_resid = (MAXPATHLEN - 1);
	266	uio.uio_segflg = UIO_SYSSPACE;
	267
50950001	268	error = -zfs_readlink(ip, &uio, cr);
8b4f9a2d BB	269	if (error) {
	270	kmem_free(link, MAXPATHLEN);
	271	nd_set_link(nd, ERR_PTR(error));
	272	} else {
	273	nd_set_link(nd, link);
	274	}
	275
81e97e21	276	crfree(cr);
8b4f9a2d	277	return (NULL);
ee154f01 BB	278	}
	279
	280	static void
	281	zpl_put_link(struct dentry dentry, struct nameidata nd, void *ptr)
	282	{
	283	char *link;
	284
	285	link = nd_get_link(nd);
	286	if (!IS_ERR(link))
8b4f9a2d	287	kmem_free(link, MAXPATHLEN);
ee154f01 BB	288	}
	289
	290	static int
	291	zpl_link(struct dentry old_dentry, struct inode dir, struct dentry *dentry)
	292	{
81e97e21	293	cred_t *cr = CRED();
ee154f01	294	struct inode *ip = old_dentry->d_inode;
ee154f01 BB	295	int error;
	296
	297	if (ip->i_nlink >= ZFS_LINK_MAX)
	298	return -EMLINK;
	299
81e97e21	300	crhold(cr);
ee154f01 BB	301	ip->i_ctime = CURRENT_TIME_SEC;
	302	igrab(ip); /* Use ihold() if available */
	303
	304	error = -zfs_link(dir, ip, dname(dentry), cr);
	305	if (error) {
	306	iput(ip);
	307	goto out;
	308	}
	309
	310	d_instantiate(dentry, ip);
	311	out:
81e97e21	312	crfree(cr);
ee154f01 BB	313	ASSERT3S(error, <=, 0);
	314
	315	return (error);
	316	}
	317
5cb63a57 ED	318	static void
	319	zpl_truncate_range(struct inode* ip, loff_t start, loff_t end)
	320	{
	321	cred_t *cr = CRED();
	322	flock64_t bf;
	323
	324	ASSERT3S(start, <=, end);
	325
	326	/*
	327	* zfs_freesp() will interpret (len == 0) as meaning "truncate until
	328	* the end of the file". We don't want that.
	329	*/
	330	if (start == end)
	331	return;
	332
	333	crhold(cr);
	334
	335	bf.l_type = F_WRLCK;
	336	bf.l_whence = 0;
	337	bf.l_start = start;
	338	bf.l_len = end - start;
	339	bf.l_pid = 0;
	340	zfs_space(ip, F_FREESP, &bf, FWRITE, start, cr);
	341
	342	crfree(cr);
	343	}
	344
cb2d1901 ED	345	#ifdef HAVE_INODE_FALLOCATE
	346	static long
	347	zpl_fallocate(struct inode *ip, int mode, loff_t offset, loff_t len)
	348	{
	349	return zpl_fallocate_common(ip, mode, offset, len);
	350	}
	351	#endif /* HAVE_INODE_FALLOCATE */
	352
	353
ee154f01	354	const struct inode_operations zpl_inode_operations = {
ee154f01 BB	355	.create = zpl_create,
	356	.link = zpl_link,
	357	.unlink = zpl_unlink,
	358	.symlink = zpl_symlink,
	359	.mkdir = zpl_mkdir,
	360	.rmdir = zpl_rmdir,
	361	.mknod = zpl_mknod,
	362	.rename = zpl_rename,
	363	.setattr = zpl_setattr,
	364	.getattr = zpl_getattr,
	365	.setxattr = generic_setxattr,
	366	.getxattr = generic_getxattr,
	367	.removexattr = generic_removexattr,
	368	.listxattr = zpl_xattr_list,
5cb63a57	369	.truncate_range = zpl_truncate_range,
cb2d1901 ED	370	#ifdef HAVE_INODE_FALLOCATE
	371	.fallocate = zpl_fallocate,
	372	#endif /* HAVE_INODE_FALLOCATE */
ee154f01 BB	373	};
	374
	375	const struct inode_operations zpl_dir_inode_operations = {
ee154f01 BB	376	.create = zpl_create,
	377	.lookup = zpl_lookup,
	378	.link = zpl_link,
	379	.unlink = zpl_unlink,
	380	.symlink = zpl_symlink,
	381	.mkdir = zpl_mkdir,
	382	.rmdir = zpl_rmdir,
	383	.mknod = zpl_mknod,
	384	.rename = zpl_rename,
	385	.setattr = zpl_setattr,
a6695d83 BB	386	.getattr = zpl_getattr,
	387	.setxattr = generic_setxattr,
	388	.getxattr = generic_getxattr,
	389	.removexattr = generic_removexattr,
	390	.listxattr = zpl_xattr_list,
ee154f01 BB	391	};
	392
	393	const struct inode_operations zpl_symlink_inode_operations = {
ee154f01 BB	394	.readlink = generic_readlink,
	395	.follow_link = zpl_follow_link,
	396	.put_link = zpl_put_link,
6f2255ba BB	397	.setattr = zpl_setattr,
6f2255ba BB	398	.getattr = zpl_getattr,
f31b3ebe BB	399	.setxattr = generic_setxattr,
	400	.getxattr = generic_getxattr,
	401	.removexattr = generic_removexattr,
	402	.listxattr = zpl_xattr_list,
ee154f01 BB	403	};
	404
	405	const struct inode_operations zpl_special_inode_operations = {
a6695d83 BB	406	.setattr = zpl_setattr,
	407	.getattr = zpl_getattr,
	408	.setxattr = generic_setxattr,
	409	.getxattr = generic_getxattr,
	410	.removexattr = generic_removexattr,
	411	.listxattr = zpl_xattr_list,
ee154f01	412	};