b249ce48ea
Filesystems which want to use it in limited capacity can employ the VOP_UNLOCK_FLAGS macro. Reviewed by: kib (previous version) Differential Revision: https://reviews.freebsd.org/D21427
288 lines
8.0 KiB
C
288 lines
8.0 KiB
C
/*-
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* Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _OPENSOLARIS_SYS_VNODE_H_
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#define _OPENSOLARIS_SYS_VNODE_H_
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#ifdef _KERNEL
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struct vnode;
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struct vattr;
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typedef struct vnode vnode_t;
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typedef struct vattr vattr_t;
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typedef enum vtype vtype_t;
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#include <sys/namei.h>
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enum symfollow { NO_FOLLOW = NOFOLLOW };
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#include <sys/proc.h>
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#include_next <sys/vnode.h>
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#include <sys/mount.h>
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#include <sys/cred.h>
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#include <sys/fcntl.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/syscallsubr.h>
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typedef struct vop_vector vnodeops_t;
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#define VOP_FID VOP_VPTOFH
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#define vop_fid vop_vptofh
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#define vop_fid_args vop_vptofh_args
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#define a_fid a_fhp
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#define IS_XATTRDIR(dvp) (0)
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#define v_count v_usecount
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#define V_APPEND VAPPEND
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#define rootvfs (rootvnode == NULL ? NULL : rootvnode->v_mount)
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static __inline int
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vn_is_readonly(vnode_t *vp)
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{
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return (vp->v_mount->mnt_flag & MNT_RDONLY);
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}
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#define vn_vfswlock(vp) (0)
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#define vn_vfsunlock(vp) do { } while (0)
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#define vn_ismntpt(vp) ((vp)->v_type == VDIR && (vp)->v_mountedhere != NULL)
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#define vn_mountedvfs(vp) ((vp)->v_mountedhere)
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#define vn_has_cached_data(vp) \
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((vp)->v_object != NULL && \
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(vp)->v_object->resident_page_count > 0)
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#define vn_exists(vp) do { } while (0)
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#define vn_invalid(vp) do { } while (0)
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#define vn_renamepath(tdvp, svp, tnm, lentnm) do { } while (0)
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#define vn_free(vp) do { } while (0)
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#define vn_matchops(vp, vops) ((vp)->v_op == &(vops))
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#define VN_HOLD(v) vref(v)
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#define VN_RELE(v) vrele(v)
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#define VN_URELE(v) vput(v)
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#define vnevent_create(vp, ct) do { } while (0)
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#define vnevent_link(vp, ct) do { } while (0)
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#define vnevent_remove(vp, dvp, name, ct) do { } while (0)
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#define vnevent_rmdir(vp, dvp, name, ct) do { } while (0)
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#define vnevent_rename_src(vp, dvp, name, ct) do { } while (0)
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#define vnevent_rename_dest(vp, dvp, name, ct) do { } while (0)
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#define vnevent_rename_dest_dir(vp, ct) do { } while (0)
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#define specvp(vp, rdev, type, cr) (VN_HOLD(vp), (vp))
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#define MANDMODE(mode) (0)
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#define MANDLOCK(vp, mode) (0)
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#define chklock(vp, op, offset, size, mode, ct) (0)
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#define cleanlocks(vp, pid, foo) do { } while (0)
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#define cleanshares(vp, pid) do { } while (0)
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/*
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* We will use va_spare is place of Solaris' va_mask.
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* This field is initialized in zfs_setattr().
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*/
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#define va_mask va_spare
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/* TODO: va_fileid is shorter than va_nodeid !!! */
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#define va_nodeid va_fileid
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/* TODO: This field needs conversion! */
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#define va_nblocks va_bytes
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#define va_blksize va_blocksize
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#define va_seq va_gen
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#define MAXOFFSET_T OFF_MAX
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#define EXCL 0
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#define ACCESSED (AT_ATIME)
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#define STATE_CHANGED (AT_CTIME)
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#define CONTENT_MODIFIED (AT_MTIME | AT_CTIME)
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static __inline void
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vattr_init_mask(vattr_t *vap)
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{
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vap->va_mask = 0;
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if (vap->va_type != VNON)
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vap->va_mask |= AT_TYPE;
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if (vap->va_uid != (uid_t)VNOVAL)
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vap->va_mask |= AT_UID;
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if (vap->va_gid != (gid_t)VNOVAL)
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vap->va_mask |= AT_GID;
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if (vap->va_size != (u_quad_t)VNOVAL)
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vap->va_mask |= AT_SIZE;
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if (vap->va_atime.tv_sec != VNOVAL)
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vap->va_mask |= AT_ATIME;
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if (vap->va_mtime.tv_sec != VNOVAL)
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vap->va_mask |= AT_MTIME;
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if (vap->va_mode != (u_short)VNOVAL)
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vap->va_mask |= AT_MODE;
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if (vap->va_flags != VNOVAL)
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vap->va_mask |= AT_XVATTR;
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}
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#define FCREAT O_CREAT
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#define FTRUNC O_TRUNC
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#define FEXCL O_EXCL
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#define FDSYNC FFSYNC
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#define FRSYNC FFSYNC
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#define FSYNC FFSYNC
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#define FOFFMAX 0x00
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#define FIGNORECASE 0x00
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static __inline int
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vn_openat(char *pnamep, enum uio_seg seg, int filemode, int createmode,
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vnode_t **vpp, enum create crwhy, mode_t umask, struct vnode *startvp,
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int fd)
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{
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struct thread *td = curthread;
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struct nameidata nd;
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int error, operation;
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ASSERT(seg == UIO_SYSSPACE);
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if ((filemode & FCREAT) != 0) {
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ASSERT(filemode == (FWRITE | FCREAT | FTRUNC | FOFFMAX));
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ASSERT(crwhy == CRCREAT);
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operation = CREATE;
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} else {
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ASSERT(filemode == (FREAD | FOFFMAX) ||
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filemode == (FREAD | FWRITE | FOFFMAX));
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ASSERT(crwhy == 0);
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operation = LOOKUP;
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}
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ASSERT(umask == 0);
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pwd_ensure_dirs();
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if (startvp != NULL)
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vref(startvp);
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NDINIT_ATVP(&nd, operation, 0, UIO_SYSSPACE, pnamep, startvp, td);
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filemode |= O_NOFOLLOW;
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error = vn_open_cred(&nd, &filemode, createmode, 0, td->td_ucred, NULL);
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NDFREE(&nd, NDF_ONLY_PNBUF);
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if (error == 0) {
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/* We just unlock so we hold a reference. */
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VOP_UNLOCK(nd.ni_vp);
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*vpp = nd.ni_vp;
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}
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return (error);
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}
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static __inline int
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zfs_vn_open(char *pnamep, enum uio_seg seg, int filemode, int createmode,
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vnode_t **vpp, enum create crwhy, mode_t umask)
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{
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return (vn_openat(pnamep, seg, filemode, createmode, vpp, crwhy,
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umask, NULL, -1));
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}
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#define vn_open(pnamep, seg, filemode, createmode, vpp, crwhy, umask) \
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zfs_vn_open((pnamep), (seg), (filemode), (createmode), (vpp), (crwhy), (umask))
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#define RLIM64_INFINITY 0
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static __inline int
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zfs_vn_rdwr(enum uio_rw rw, vnode_t *vp, caddr_t base, ssize_t len,
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offset_t offset, enum uio_seg seg, int ioflag, int ulimit, cred_t *cr,
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ssize_t *residp)
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{
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struct thread *td = curthread;
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int error;
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ssize_t resid;
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ASSERT(ioflag == 0);
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ASSERT(ulimit == RLIM64_INFINITY);
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if (rw == UIO_WRITE) {
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ioflag = IO_SYNC;
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} else {
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ioflag = IO_DIRECT;
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}
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error = vn_rdwr(rw, vp, base, len, offset, seg, ioflag, cr, NOCRED,
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&resid, td);
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if (residp != NULL)
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*residp = (ssize_t)resid;
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return (error);
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}
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#define vn_rdwr(rw, vp, base, len, offset, seg, ioflag, ulimit, cr, residp) \
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zfs_vn_rdwr((rw), (vp), (base), (len), (offset), (seg), (ioflag), (ulimit), (cr), (residp))
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static __inline int
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zfs_vop_fsync(vnode_t *vp, int flag, cred_t *cr)
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{
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struct mount *mp;
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int error;
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ASSERT(flag == FSYNC);
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if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
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goto drop;
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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error = VOP_FSYNC(vp, MNT_WAIT, curthread);
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VOP_UNLOCK(vp);
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vn_finished_write(mp);
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drop:
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return (error);
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}
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#define VOP_FSYNC(vp, flag, cr, ct) zfs_vop_fsync((vp), (flag), (cr))
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static __inline int
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zfs_vop_close(vnode_t *vp, int flag, int count, offset_t offset, cred_t *cr)
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{
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int error;
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ASSERT(count == 1);
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ASSERT(offset == 0);
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error = vn_close(vp, flag, cr, curthread);
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return (error);
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}
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#define VOP_CLOSE(vp, oflags, count, offset, cr, ct) \
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zfs_vop_close((vp), (oflags), (count), (offset), (cr))
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static __inline int
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vn_rename(char *from, char *to, enum uio_seg seg)
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{
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ASSERT(seg == UIO_SYSSPACE);
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return (kern_renameat(curthread, AT_FDCWD, from, AT_FDCWD, to, seg));
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}
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static __inline int
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vn_remove(char *fnamep, enum uio_seg seg, enum rm dirflag)
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{
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ASSERT(seg == UIO_SYSSPACE);
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ASSERT(dirflag == RMFILE);
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return (kern_funlinkat(curthread, AT_FDCWD, fnamep, FD_NONE, seg, 0,
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0));
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}
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#endif /* _KERNEL */
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#endif /* _OPENSOLARIS_SYS_VNODE_H_ */
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