ace1eae84c
Linux 3.11 add O_TMPFILE to open(2), which allow creating an unlinked file on supported filesystem. It's basically doing open(2) and unlink(2) atomically. The filesystem support is added through i_op->tmpfile. We basically copy the create operation except we get rid of the link and name related stuff and add the new node to unlinked set. We also add support for linkat(2) to link tmpfile. However, since all previous file operation will skip ZIL, we force a txg_wait_synced to make sure we are sync safe. Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
91 lines
3.9 KiB
C
91 lines
3.9 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#ifndef _SYS_FS_ZFS_VNOPS_H
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#define _SYS_FS_ZFS_VNOPS_H
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#include <sys/vnode.h>
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#include <sys/xvattr.h>
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#include <sys/uio.h>
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#include <sys/cred.h>
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#include <sys/fcntl.h>
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#include <sys/pathname.h>
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#include <sys/zpl.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int zfs_open(struct inode *ip, int mode, int flag, cred_t *cr);
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extern int zfs_close(struct inode *ip, int flag, cred_t *cr);
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extern int zfs_holey(struct inode *ip, int cmd, loff_t *off);
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extern int zfs_read(struct inode *ip, uio_t *uio, int ioflag, cred_t *cr);
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extern int zfs_write(struct inode *ip, uio_t *uio, int ioflag, cred_t *cr);
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extern int zfs_access(struct inode *ip, int mode, int flag, cred_t *cr);
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extern int zfs_lookup(struct inode *dip, char *nm, struct inode **ipp,
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int flags, cred_t *cr, int *direntflags, pathname_t *realpnp);
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extern int zfs_create(struct inode *dip, char *name, vattr_t *vap, int excl,
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int mode, struct inode **ipp, cred_t *cr, int flag, vsecattr_t *vsecp);
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extern int zfs_tmpfile(struct inode *dip, vattr_t *vap, int excl,
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int mode, struct inode **ipp, cred_t *cr, int flag, vsecattr_t *vsecp);
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extern int zfs_remove(struct inode *dip, char *name, cred_t *cr, int flags);
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extern int zfs_mkdir(struct inode *dip, char *dirname, vattr_t *vap,
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struct inode **ipp, cred_t *cr, int flags, vsecattr_t *vsecp);
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extern int zfs_rmdir(struct inode *dip, char *name, struct inode *cwd,
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cred_t *cr, int flags);
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extern int zfs_readdir(struct inode *ip, struct dir_context *ctx, cred_t *cr);
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extern int zfs_fsync(struct inode *ip, int syncflag, cred_t *cr);
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extern int zfs_getattr(struct inode *ip, vattr_t *vap, int flag, cred_t *cr);
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extern int zfs_getattr_fast(struct inode *ip, struct kstat *sp);
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extern int zfs_setattr(struct inode *ip, vattr_t *vap, int flag, cred_t *cr);
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extern int zfs_rename(struct inode *sdip, char *snm, struct inode *tdip,
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char *tnm, cred_t *cr, int flags);
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extern int zfs_symlink(struct inode *dip, char *name, vattr_t *vap,
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char *link, struct inode **ipp, cred_t *cr, int flags);
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extern int zfs_follow_link(struct dentry *dentry, struct nameidata *nd);
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extern int zfs_readlink(struct inode *ip, uio_t *uio, cred_t *cr);
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extern int zfs_link(struct inode *tdip, struct inode *sip,
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char *name, cred_t *cr, int flags);
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extern void zfs_inactive(struct inode *ip);
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extern int zfs_space(struct inode *ip, int cmd, flock64_t *bfp, int flag,
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offset_t offset, cred_t *cr);
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extern int zfs_fid(struct inode *ip, fid_t *fidp);
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extern int zfs_getsecattr(struct inode *ip, vsecattr_t *vsecp, int flag,
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cred_t *cr);
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extern int zfs_setsecattr(struct inode *ip, vsecattr_t *vsecp, int flag,
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cred_t *cr);
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extern int zfs_getpage(struct inode *ip, struct page *pl[], int nr_pages);
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extern int zfs_putpage(struct inode *ip, struct page *pp,
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struct writeback_control *wbc);
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extern int zfs_dirty_inode(struct inode *ip, int flags);
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extern int zfs_map(struct inode *ip, offset_t off, caddr_t *addrp,
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size_t len, unsigned long vm_flags);
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extern void zfs_iput_async(struct inode *ip);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_FS_ZFS_VNOPS_H */
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