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freebsd-dev/sys/fs/nandfs/nandfs_vnops.c
Jeff Roberson 22a722605d - Convert the bufobj lock to rwlock. 
- Use a shared bufobj lock in getblk() and inmem().
 - Convert softdep's lk to rwlock to match the bufobj lock.
 - Move INFREECNT to b_flags and protect it with the buf lock.
 - Remove unnecessary locking around bremfree() and BKGRDINPROG.

Sponsored by:	EMC / Isilon Storage Division
Discussed with:	mckusick, kib, mdf
2013-05-31 00:43:41 +00:00

2457 lines
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/*-
* Copyright (c) 2010-2012 Semihalf
* Copyright (c) 2008, 2009 Reinoud Zandijk
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* From: NetBSD: nilfs_vnops.c,v 1.2 2009/08/26 03:40:48 elad
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/lockf.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/sysctl.h>
#include <sys/unistd.h>
#include <sys/vnode.h>
#include <sys/buf.h>
#include <sys/bio.h>
#include <sys/fcntl.h>
#include <sys/dirent.h>
#include <sys/rwlock.h>
#include <sys/stat.h>
#include <sys/priv.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/vm_object.h>
#include <vm/vnode_pager.h>
#include <machine/_inttypes.h>
#include <fs/nandfs/nandfs_mount.h>
#include <fs/nandfs/nandfs.h>
#include <fs/nandfs/nandfs_subr.h>
extern uma_zone_t nandfs_node_zone;
static void nandfs_read_filebuf(struct nandfs_node *, struct buf *);
static void nandfs_itimes_locked(struct vnode *);
static int nandfs_truncate(struct vnode *, uint64_t);
static vop_pathconf_t nandfs_pathconf;
#define UPDATE_CLOSE 0
#define UPDATE_WAIT 0
static int
nandfs_inactive(struct vop_inactive_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *node = VTON(vp);
int error = 0;
DPRINTF(VNCALL, ("%s: vp:%p node:%p\n", __func__, vp, node));
if (node == NULL) {
DPRINTF(NODE, ("%s: inactive NULL node\n", __func__));
return (0);
}
if (node->nn_inode.i_mode != 0 && !(node->nn_inode.i_links_count)) {
nandfs_truncate(vp, 0);
error = nandfs_node_destroy(node);
if (error)
nandfs_error("%s: destroy node: %p\n", __func__, node);
node->nn_flags = 0;
vrecycle(vp);
}
return (error);
}
static int
nandfs_reclaim(struct vop_reclaim_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *nandfs_node = VTON(vp);
struct nandfs_device *fsdev = nandfs_node->nn_nandfsdev;
uint64_t ino = nandfs_node->nn_ino;
DPRINTF(VNCALL, ("%s: vp:%p node:%p\n", __func__, vp, nandfs_node));
/* Invalidate all entries to a particular vnode. */
cache_purge(vp);
/* Destroy the vm object and flush associated pages. */
vnode_destroy_vobject(vp);
/* Remove from vfs hash if not system vnode */
if (!NANDFS_SYS_NODE(nandfs_node->nn_ino))
vfs_hash_remove(vp);
/* Dispose all node knowledge */
nandfs_dispose_node(&nandfs_node);
if (!NANDFS_SYS_NODE(ino))
NANDFS_WRITEUNLOCK(fsdev);
return (0);
}
static int
nandfs_read(struct vop_read_args *ap)
{
register struct vnode *vp = ap->a_vp;
register struct nandfs_node *node = VTON(vp);
struct nandfs_device *nandfsdev = node->nn_nandfsdev;
struct uio *uio = ap->a_uio;
struct buf *bp;
uint64_t size;
uint32_t blocksize;
off_t bytesinfile;
ssize_t toread, off;
daddr_t lbn;
ssize_t resid;
int error = 0;
if (uio->uio_resid == 0)
return (0);
size = node->nn_inode.i_size;
if (uio->uio_offset >= size)
return (0);
blocksize = nandfsdev->nd_blocksize;
bytesinfile = size - uio->uio_offset;
resid = omin(uio->uio_resid, bytesinfile);
while (resid) {
lbn = uio->uio_offset / blocksize;
off = uio->uio_offset & (blocksize - 1);
toread = omin(resid, blocksize - off);
DPRINTF(READ, ("nandfs_read bn: 0x%jx toread: 0x%zx (0x%x)\n",
(uintmax_t)lbn, toread, blocksize));
error = nandfs_bread(node, lbn, NOCRED, 0, &bp);
if (error) {
brelse(bp);
break;
}
error = uiomove(bp->b_data + off, toread, uio);
if (error) {
brelse(bp);
break;
}
brelse(bp);
resid -= toread;
}
return (error);
}
static int
nandfs_write(struct vop_write_args *ap)
{
struct nandfs_device *fsdev;
struct nandfs_node *node;
struct vnode *vp;
struct uio *uio;
struct buf *bp;
uint64_t file_size, vblk;
uint32_t blocksize;
ssize_t towrite, off;
daddr_t lbn;
ssize_t resid;
int error, ioflag, modified;
vp = ap->a_vp;
uio = ap->a_uio;
ioflag = ap->a_ioflag;
node = VTON(vp);
fsdev = node->nn_nandfsdev;
if (nandfs_fs_full(fsdev))
return (ENOSPC);
DPRINTF(WRITE, ("nandfs_write called %#zx at %#jx\n",
uio->uio_resid, (uintmax_t)uio->uio_offset));
if (uio->uio_offset < 0)
return (EINVAL);
if (uio->uio_resid == 0)
return (0);
blocksize = fsdev->nd_blocksize;
file_size = node->nn_inode.i_size;
switch (vp->v_type) {
case VREG:
if (ioflag & IO_APPEND)
uio->uio_offset = file_size;
break;
case VDIR:
return (EISDIR);
case VLNK:
break;
default:
panic("%s: bad file type vp: %p", __func__, vp);
}
/* If explicitly asked to append, uio_offset can be wrong? */
if (ioflag & IO_APPEND)
uio->uio_offset = file_size;
resid = uio->uio_resid;
modified = error = 0;
while (uio->uio_resid) {
lbn = uio->uio_offset / blocksize;
off = uio->uio_offset & (blocksize - 1);
towrite = omin(uio->uio_resid, blocksize - off);
DPRINTF(WRITE, ("%s: lbn: 0x%jd toread: 0x%zx (0x%x)\n",
__func__, (uintmax_t)lbn, towrite, blocksize));
error = nandfs_bmap_lookup(node, lbn, &vblk);
if (error)
break;
DPRINTF(WRITE, ("%s: lbn: 0x%jd toread: 0x%zx (0x%x) "
"vblk=%jx\n", __func__, (uintmax_t)lbn, towrite, blocksize,
vblk));
if (vblk != 0)
error = nandfs_bread(node, lbn, NOCRED, 0, &bp);
else
error = nandfs_bcreate(node, lbn, NOCRED, 0, &bp);
DPRINTF(WRITE, ("%s: vp %p bread bp %p lbn %#jx\n", __func__,
vp, bp, (uintmax_t)lbn));
if (error) {
if (bp)
brelse(bp);
break;
}
error = uiomove((char *)bp->b_data + off, (int)towrite, uio);
if (error)
break;
error = nandfs_dirty_buf(bp, 0);
if (error)
break;
modified++;
}
/* XXX proper handling when only part of file was properly written */
if (modified) {
if (resid > uio->uio_resid && ap->a_cred &&
ap->a_cred->cr_uid != 0)
node->nn_inode.i_mode &= ~(ISUID | ISGID);
if (file_size < uio->uio_offset + uio->uio_resid) {
node->nn_inode.i_size = uio->uio_offset +
uio->uio_resid;
node->nn_flags |= IN_CHANGE | IN_UPDATE;
vnode_pager_setsize(vp, uio->uio_offset +
uio->uio_resid);
nandfs_itimes(vp);
}
}
DPRINTF(WRITE, ("%s: return:%d\n", __func__, error));
return (error);
}
static int
nandfs_lookup(struct vop_cachedlookup_args *ap)
{
struct vnode *dvp, **vpp;
struct componentname *cnp;
struct ucred *cred;
struct thread *td;
struct nandfs_node *dir_node, *node;
struct nandfsmount *nmp;
uint64_t ino, off;
const char *name;
int namelen, nameiop, islastcn, mounted_ro;
int error, found;
DPRINTF(VNCALL, ("%s\n", __func__));
dvp = ap->a_dvp;
vpp = ap->a_vpp;
*vpp = NULL;
cnp = ap->a_cnp;
cred = cnp->cn_cred;
td = cnp->cn_thread;
dir_node = VTON(dvp);
nmp = dir_node->nn_nmp;
/* Simplify/clarification flags */
nameiop = cnp->cn_nameiop;
islastcn = cnp->cn_flags & ISLASTCN;
mounted_ro = dvp->v_mount->mnt_flag & MNT_RDONLY;
/*
* If requesting a modify on the last path element on a read-only
* filingsystem, reject lookup;
*/
if (islastcn && mounted_ro && (nameiop == DELETE || nameiop == RENAME))
return (EROFS);
if (dir_node->nn_inode.i_links_count == 0)
return (ENOENT);
/*
* Obviously, the file is not (anymore) in the namecache, we have to
* search for it. There are three basic cases: '.', '..' and others.
*
* Following the guidelines of VOP_LOOKUP manpage and tmpfs.
*/
error = 0;
if ((cnp->cn_namelen == 1) && (cnp->cn_nameptr[0] == '.')) {
DPRINTF(LOOKUP, ("\tlookup '.'\n"));
/* Special case 1 '.' */
VREF(dvp);
*vpp = dvp;
/* Done */
} else if (cnp->cn_flags & ISDOTDOT) {
/* Special case 2 '..' */
DPRINTF(LOOKUP, ("\tlookup '..'\n"));
/* Get our node */
name = "..";
namelen = 2;
error = nandfs_lookup_name_in_dir(dvp, name, namelen, &ino,
&found, &off);
if (error)
goto out;
if (!found)
error = ENOENT;
/* First unlock parent */
VOP_UNLOCK(dvp, 0);
if (error == 0) {
DPRINTF(LOOKUP, ("\tfound '..'\n"));
/* Try to create/reuse the node */
error = nandfs_get_node(nmp, ino, &node);
if (!error) {
DPRINTF(LOOKUP,
("\tnode retrieved/created OK\n"));
*vpp = NTOV(node);
}
}
/* Try to relock parent */
vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
} else {
DPRINTF(LOOKUP, ("\tlookup file\n"));
/* All other files */
/* Look up filename in the directory returning its inode */
name = cnp->cn_nameptr;
namelen = cnp->cn_namelen;
error = nandfs_lookup_name_in_dir(dvp, name, namelen,
&ino, &found, &off);
if (error)
goto out;
if (!found) {
DPRINTF(LOOKUP, ("\tNOT found\n"));
/*
* UGH, didn't find name. If we're creating or
* renaming on the last name this is OK and we ought
* to return EJUSTRETURN if its allowed to be created.
*/
error = ENOENT;
if ((nameiop == CREATE || nameiop == RENAME) &&
islastcn) {
error = VOP_ACCESS(dvp, VWRITE, cred,
td);
if (!error) {
/* keep the component name */
cnp->cn_flags |= SAVENAME;
error = EJUSTRETURN;
}
}
/* Done */
} else {
if (ino == NANDFS_WHT_INO)
cnp->cn_flags |= ISWHITEOUT;
if ((cnp->cn_flags & ISWHITEOUT) &&
(nameiop == LOOKUP))
return (ENOENT);
if ((nameiop == DELETE) && islastcn) {
if ((cnp->cn_flags & ISWHITEOUT) &&
(cnp->cn_flags & DOWHITEOUT)) {
cnp->cn_flags |= SAVENAME;
dir_node->nn_diroff = off;
return (EJUSTRETURN);
}
error = VOP_ACCESS(dvp, VWRITE, cred,
cnp->cn_thread);
if (error)
return (error);
/* Try to create/reuse the node */
error = nandfs_get_node(nmp, ino, &node);
if (!error) {
*vpp = NTOV(node);
node->nn_diroff = off;
}
if ((dir_node->nn_inode.i_mode & ISVTX) &&
cred->cr_uid != 0 &&
cred->cr_uid != dir_node->nn_inode.i_uid &&
node->nn_inode.i_uid != cred->cr_uid) {
vput(*vpp);
*vpp = NULL;
return (EPERM);
}
} else if ((nameiop == RENAME) && islastcn) {
error = VOP_ACCESS(dvp, VWRITE, cred,
cnp->cn_thread);
if (error)
return (error);
/* Try to create/reuse the node */
error = nandfs_get_node(nmp, ino, &node);
if (!error) {
*vpp = NTOV(node);
node->nn_diroff = off;
}
} else {
/* Try to create/reuse the node */
error = nandfs_get_node(nmp, ino, &node);
if (!error) {
*vpp = NTOV(node);
node->nn_diroff = off;
}
}
}
}
out:
/*
* Store result in the cache if requested. If we are creating a file,
* the file might not be found and thus putting it into the namecache
* might be seen as negative caching.
*/
if ((cnp->cn_flags & MAKEENTRY) && nameiop != CREATE)
cache_enter(dvp, *vpp, cnp);
return (error);
}
static int
nandfs_getattr(struct vop_getattr_args *ap)
{
struct vnode *vp = ap->a_vp;
struct vattr *vap = ap->a_vap;
struct nandfs_node *node = VTON(vp);
struct nandfs_inode *inode = &node->nn_inode;
DPRINTF(VNCALL, ("%s: vp: %p\n", __func__, vp));
nandfs_itimes(vp);
/* Basic info */
VATTR_NULL(vap);
vap->va_atime.tv_sec = inode->i_mtime;
vap->va_atime.tv_nsec = inode->i_mtime_nsec;
vap->va_mtime.tv_sec = inode->i_mtime;
vap->va_mtime.tv_nsec = inode->i_mtime_nsec;
vap->va_ctime.tv_sec = inode->i_ctime;
vap->va_ctime.tv_nsec = inode->i_ctime_nsec;
vap->va_type = IFTOVT(inode->i_mode);
vap->va_mode = inode->i_mode & ~S_IFMT;
vap->va_nlink = inode->i_links_count;
vap->va_uid = inode->i_uid;
vap->va_gid = inode->i_gid;
vap->va_rdev = inode->i_special;
vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
vap->va_fileid = node->nn_ino;
vap->va_size = inode->i_size;
vap->va_blocksize = node->nn_nandfsdev->nd_blocksize;
vap->va_gen = 0;
vap->va_flags = inode->i_flags;
vap->va_bytes = inode->i_blocks * vap->va_blocksize;
vap->va_filerev = 0;
vap->va_vaflags = 0;
return (0);
}
static int
nandfs_vtruncbuf(struct vnode *vp, uint64_t nblks)
{
struct nandfs_device *nffsdev;
struct bufobj *bo;
struct buf *bp, *nbp;
bo = &vp->v_bufobj;
nffsdev = VTON(vp)->nn_nandfsdev;
ASSERT_VOP_LOCKED(vp, "nandfs_truncate");
restart:
BO_LOCK(bo);
restart_locked:
TAILQ_FOREACH_SAFE(bp, &bo->bo_clean.bv_hd, b_bobufs, nbp) {
if (bp->b_lblkno < nblks)
continue;
if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL))
goto restart_locked;
bremfree(bp);
bp->b_flags |= (B_INVAL | B_RELBUF);
bp->b_flags &= ~(B_ASYNC | B_MANAGED);
BO_UNLOCK(bo);
brelse(bp);
BO_LOCK(bo);
}
TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
if (bp->b_lblkno < nblks)
continue;
if (BUF_LOCK(bp,
LK_EXCLUSIVE | LK_SLEEPFAIL | LK_INTERLOCK,
BO_LOCKPTR(bo)) == ENOLCK)
goto restart;
bp->b_flags |= (B_INVAL | B_RELBUF);
bp->b_flags &= ~(B_ASYNC | B_MANAGED);
brelse(bp);
nandfs_dirty_bufs_decrement(nffsdev);
BO_LOCK(bo);
}
BO_UNLOCK(bo);
return (0);
}
static int
nandfs_truncate(struct vnode *vp, uint64_t newsize)
{
struct nandfs_device *nffsdev;
struct nandfs_node *node;
struct nandfs_inode *inode;
struct buf *bp = NULL;
uint64_t oblks, nblks, vblk, size, rest;
int error;
node = VTON(vp);
nffsdev = node->nn_nandfsdev;
inode = &node->nn_inode;
/* Calculate end of file */
size = inode->i_size;
if (newsize == size) {
node->nn_flags |= IN_CHANGE | IN_UPDATE;
nandfs_itimes(vp);
return (0);
}
if (newsize > size) {
inode->i_size = newsize;
vnode_pager_setsize(vp, newsize);
node->nn_flags |= IN_CHANGE | IN_UPDATE;
nandfs_itimes(vp);
return (0);
}
nblks = howmany(newsize, nffsdev->nd_blocksize);
oblks = howmany(size, nffsdev->nd_blocksize);
rest = newsize % nffsdev->nd_blocksize;
if (rest) {
error = nandfs_bmap_lookup(node, nblks - 1, &vblk);
if (error)
return (error);
if (vblk != 0)
error = nandfs_bread(node, nblks - 1, NOCRED, 0, &bp);
else
error = nandfs_bcreate(node, nblks - 1, NOCRED, 0, &bp);
if (error) {
if (bp)
brelse(bp);
return (error);
}
bzero((char *)bp->b_data + rest,
(u_int)(nffsdev->nd_blocksize - rest));
error = nandfs_dirty_buf(bp, 0);
if (error)
return (error);
}
DPRINTF(VNCALL, ("%s: vp %p oblks %jx nblks %jx\n", __func__, vp, oblks,
nblks));
error = nandfs_bmap_truncate_mapping(node, oblks - 1, nblks - 1);
if (error) {
if (bp)
nandfs_undirty_buf(bp);
return (error);
}
error = nandfs_vtruncbuf(vp, nblks);
if (error) {
if (bp)
nandfs_undirty_buf(bp);
return (error);
}
inode->i_size = newsize;
vnode_pager_setsize(vp, newsize);
node->nn_flags |= IN_CHANGE | IN_UPDATE;
nandfs_itimes(vp);
return (error);
}
static void
nandfs_itimes_locked(struct vnode *vp)
{
struct nandfs_node *node;
struct nandfs_inode *inode;
struct timespec ts;
ASSERT_VI_LOCKED(vp, __func__);
node = VTON(vp);
inode = &node->nn_inode;
if ((node->nn_flags & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
return;
if (((vp->v_mount->mnt_kern_flag &
(MNTK_SUSPENDED | MNTK_SUSPEND)) == 0) ||
(node->nn_flags & (IN_CHANGE | IN_UPDATE)))
node->nn_flags |= IN_MODIFIED;
vfs_timestamp(&ts);
if (node->nn_flags & IN_UPDATE) {
inode->i_mtime = ts.tv_sec;
inode->i_mtime_nsec = ts.tv_nsec;
}
if (node->nn_flags & IN_CHANGE) {
inode->i_ctime = ts.tv_sec;
inode->i_ctime_nsec = ts.tv_nsec;
}
node->nn_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
}
void
nandfs_itimes(struct vnode *vp)
{
VI_LOCK(vp);
nandfs_itimes_locked(vp);
VI_UNLOCK(vp);
}
static int
nandfs_chmod(struct vnode *vp, int mode, struct ucred *cred, struct thread *td)
{
struct nandfs_node *node = VTON(vp);
struct nandfs_inode *inode = &node->nn_inode;
uint16_t nmode;
int error = 0;
DPRINTF(VNCALL, ("%s: vp %p, mode %x, cred %p, td %p\n", __func__, vp,
mode, cred, td));
/*
* To modify the permissions on a file, must possess VADMIN
* for that file.
*/
if ((error = VOP_ACCESS(vp, VADMIN, cred, td)))
return (error);
/*
* Privileged processes may set the sticky bit on non-directories,
* as well as set the setgid bit on a file with a group that the
* process is not a member of. Both of these are allowed in
* jail(8).
*/
if (vp->v_type != VDIR && (mode & S_ISTXT)) {
if (priv_check_cred(cred, PRIV_VFS_STICKYFILE, 0))
return (EFTYPE);
}
if (!groupmember(inode->i_gid, cred) && (mode & ISGID)) {
error = priv_check_cred(cred, PRIV_VFS_SETGID, 0);
if (error)
return (error);
}
/*
* Deny setting setuid if we are not the file owner.
*/
if ((mode & ISUID) && inode->i_uid != cred->cr_uid) {
error = priv_check_cred(cred, PRIV_VFS_ADMIN, 0);
if (error)
return (error);
}
nmode = inode->i_mode;
nmode &= ~ALLPERMS;
nmode |= (mode & ALLPERMS);
inode->i_mode = nmode;
node->nn_flags |= IN_CHANGE;
DPRINTF(VNCALL, ("%s: to mode %x\n", __func__, nmode));
return (error);
}
static int
nandfs_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred,
struct thread *td)
{
struct nandfs_node *node = VTON(vp);
struct nandfs_inode *inode = &node->nn_inode;
uid_t ouid;
gid_t ogid;
int error = 0;
if (uid == (uid_t)VNOVAL)
uid = inode->i_uid;
if (gid == (gid_t)VNOVAL)
gid = inode->i_gid;
/*
* To modify the ownership of a file, must possess VADMIN for that
* file.
*/
if ((error = VOP_ACCESSX(vp, VWRITE_OWNER, cred, td)))
return (error);
/*
* To change the owner of a file, or change the group of a file to a
* group of which we are not a member, the caller must have
* privilege.
*/
if (((uid != inode->i_uid && uid != cred->cr_uid) ||
(gid != inode->i_gid && !groupmember(gid, cred))) &&
(error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0)))
return (error);
ogid = inode->i_gid;
ouid = inode->i_uid;
inode->i_gid = gid;
inode->i_uid = uid;
node->nn_flags |= IN_CHANGE;
if ((inode->i_mode & (ISUID | ISGID)) &&
(ouid != uid || ogid != gid)) {
if (priv_check_cred(cred, PRIV_VFS_RETAINSUGID, 0)) {
inode->i_mode &= ~(ISUID | ISGID);
}
}
DPRINTF(VNCALL, ("%s: vp %p, cred %p, td %p - ret OK\n", __func__, vp,
cred, td));
return (0);
}
static int
nandfs_setattr(struct vop_setattr_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *node = VTON(vp);
struct nandfs_inode *inode = &node->nn_inode;
struct vattr *vap = ap->a_vap;
struct ucred *cred = ap->a_cred;
struct thread *td = curthread;
uint32_t flags;
int error = 0;
if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
(vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
(vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
(vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
DPRINTF(VNCALL, ("%s: unsettable attribute\n", __func__));
return (EINVAL);
}
if (vap->va_flags != VNOVAL) {
DPRINTF(VNCALL, ("%s: vp:%p td:%p flags:%lx\n", __func__, vp,
td, vap->va_flags));
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
/*
* Callers may only modify the file flags on objects they
* have VADMIN rights for.
*/
if ((error = VOP_ACCESS(vp, VADMIN, cred, td)))
return (error);
/*
* Unprivileged processes are not permitted to unset system
* flags, or modify flags if any system flags are set.
* Privileged non-jail processes may not modify system flags
* if securelevel > 0 and any existing system flags are set.
* Privileged jail processes behave like privileged non-jail
* processes if the security.jail.chflags_allowed sysctl is
* is non-zero; otherwise, they behave like unprivileged
* processes.
*/
flags = inode->i_flags;
if (!priv_check_cred(cred, PRIV_VFS_SYSFLAGS, 0)) {
if (flags & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) {
error = securelevel_gt(cred, 0);
if (error)
return (error);
}
/* Snapshot flag cannot be set or cleared */
if (((vap->va_flags & SF_SNAPSHOT) != 0 &&
(flags & SF_SNAPSHOT) == 0) ||
((vap->va_flags & SF_SNAPSHOT) == 0 &&
(flags & SF_SNAPSHOT) != 0))
return (EPERM);
inode->i_flags = vap->va_flags;
} else {
if (flags & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
(vap->va_flags & UF_SETTABLE) != vap->va_flags)
return (EPERM);
flags &= SF_SETTABLE;
flags |= (vap->va_flags & UF_SETTABLE);
inode->i_flags = flags;
}
node->nn_flags |= IN_CHANGE;
if (vap->va_flags & (IMMUTABLE | APPEND))
return (0);
}
if (inode->i_flags & (IMMUTABLE | APPEND))
return (EPERM);
if (vap->va_size != (u_quad_t)VNOVAL) {
DPRINTF(VNCALL, ("%s: vp:%p td:%p size:%jx\n", __func__, vp, td,
(uintmax_t)vap->va_size));
switch (vp->v_type) {
case VDIR:
return (EISDIR);
case VLNK:
case VREG:
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
if ((inode->i_flags & SF_SNAPSHOT) != 0)
return (EPERM);
break;
default:
return (0);
}
if (vap->va_size > node->nn_nandfsdev->nd_maxfilesize)
return (EFBIG);
KASSERT((vp->v_type == VREG), ("Set size %d", vp->v_type));
nandfs_truncate(vp, vap->va_size);
node->nn_flags |= IN_CHANGE;
return (0);
}
if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
DPRINTF(VNCALL, ("%s: vp:%p td:%p uid/gid %x/%x\n", __func__,
vp, td, vap->va_uid, vap->va_gid));
error = nandfs_chown(vp, vap->va_uid, vap->va_gid, cred, td);
if (error)
return (error);
}
if (vap->va_mode != (mode_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
DPRINTF(VNCALL, ("%s: vp:%p td:%p mode %x\n", __func__, vp, td,
vap->va_mode));
error = nandfs_chmod(vp, (int)vap->va_mode, cred, td);
if (error)
return (error);
}
if (vap->va_atime.tv_sec != VNOVAL ||
vap->va_mtime.tv_sec != VNOVAL ||
vap->va_birthtime.tv_sec != VNOVAL) {
DPRINTF(VNCALL, ("%s: vp:%p td:%p time a/m/b %jx/%jx/%jx\n",
__func__, vp, td, (uintmax_t)vap->va_atime.tv_sec,
(uintmax_t)vap->va_mtime.tv_sec,
(uintmax_t)vap->va_birthtime.tv_sec));
if (vap->va_atime.tv_sec != VNOVAL)
node->nn_flags |= IN_ACCESS;
if (vap->va_mtime.tv_sec != VNOVAL)
node->nn_flags |= IN_CHANGE | IN_UPDATE;
if (vap->va_birthtime.tv_sec != VNOVAL)
node->nn_flags |= IN_MODIFIED;
nandfs_itimes(vp);
return (0);
}
return (0);
}
static int
nandfs_open(struct vop_open_args *ap)
{
struct nandfs_node *node = VTON(ap->a_vp);
uint64_t filesize;
DPRINTF(VNCALL, ("nandfs_open called ap->a_mode %x\n", ap->a_mode));
if (ap->a_vp->v_type == VCHR || ap->a_vp->v_type == VBLK)
return (EOPNOTSUPP);
if ((node->nn_inode.i_flags & APPEND) &&
(ap->a_mode & (FWRITE | O_APPEND)) == FWRITE)
return (EPERM);
filesize = node->nn_inode.i_size;
vnode_create_vobject(ap->a_vp, filesize, ap->a_td);
return (0);
}
static int
nandfs_close(struct vop_close_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *node = VTON(vp);
DPRINTF(VNCALL, ("%s: vp %p node %p\n", __func__, vp, node));
mtx_lock(&vp->v_interlock);
if (vp->v_usecount > 1)
nandfs_itimes_locked(vp);
mtx_unlock(&vp->v_interlock);
return (0);
}
static int
nandfs_check_possible(struct vnode *vp, struct vattr *vap, mode_t mode)
{
/* Check if we are allowed to write */
switch (vap->va_type) {
case VDIR:
case VLNK:
case VREG:
/*
* Normal nodes: check if we're on a read-only mounted
* filingsystem and bomb out if we're trying to write.
*/
if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY))
return (EROFS);
break;
case VBLK:
case VCHR:
case VSOCK:
case VFIFO:
/*
* Special nodes: even on read-only mounted filingsystems
* these are allowed to be written to if permissions allow.
*/
break;
default:
/* No idea what this is */
return (EINVAL);
}
/* Noone may write immutable files */
if ((mode & VWRITE) && (VTON(vp)->nn_inode.i_flags & IMMUTABLE))
return (EPERM);
return (0);
}
static int
nandfs_check_permitted(struct vnode *vp, struct vattr *vap, mode_t mode,
struct ucred *cred)
{
return (vaccess(vp->v_type, vap->va_mode, vap->va_uid, vap->va_gid, mode,
cred, NULL));
}
static int
nandfs_advlock(struct vop_advlock_args *ap)
{
struct nandfs_node *nvp;
quad_t size;
nvp = VTON(ap->a_vp);
size = nvp->nn_inode.i_size;
return (lf_advlock(ap, &(nvp->nn_lockf), size));
}
static int
nandfs_access(struct vop_access_args *ap)
{
struct vnode *vp = ap->a_vp;
accmode_t accmode = ap->a_accmode;
struct ucred *cred = ap->a_cred;
struct vattr vap;
int error;
DPRINTF(VNCALL, ("%s: vp:%p mode: %x\n", __func__, vp, accmode));
error = VOP_GETATTR(vp, &vap, NULL);
if (error)
return (error);
error = nandfs_check_possible(vp, &vap, accmode);
if (error) {
return (error);
}
error = nandfs_check_permitted(vp, &vap, accmode, cred);
return (error);
}
static int
nandfs_print(struct vop_print_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *nvp = VTON(vp);
printf("\tvp=%p, nandfs_node=%p\n", vp, nvp);
printf("nandfs inode %#jx\n", (uintmax_t)nvp->nn_ino);
printf("flags = 0x%b\n", (u_int)nvp->nn_flags, PRINT_NODE_FLAGS);
return (0);
}
static void
nandfs_read_filebuf(struct nandfs_node *node, struct buf *bp)
{
struct nandfs_device *nandfsdev = node->nn_nandfsdev;
struct buf *nbp;
nandfs_daddr_t vblk, pblk;
nandfs_lbn_t from;
uint32_t blocksize;
int error = 0;
int blk2dev = nandfsdev->nd_blocksize / DEV_BSIZE;
/*
* Translate all the block sectors into a series of buffers to read
* asynchronously from the nandfs device. Note that this lookup may
* induce readin's too.
*/
blocksize = nandfsdev->nd_blocksize;
if (bp->b_bcount / blocksize != 1)
panic("invalid b_count in bp %p\n", bp);
from = bp->b_blkno;
DPRINTF(READ, ("\tread in from inode %#jx blkno %#jx"
" count %#lx\n", (uintmax_t)node->nn_ino, from,
bp->b_bcount));
/* Get virtual block numbers for the vnode's buffer span */
error = nandfs_bmap_lookup(node, from, &vblk);
if (error) {
bp->b_error = EINVAL;
bp->b_ioflags |= BIO_ERROR;
bufdone(bp);
return;
}
/* Translate virtual block numbers to physical block numbers */
error = nandfs_vtop(node, vblk, &pblk);
if (error) {
bp->b_error = EINVAL;
bp->b_ioflags |= BIO_ERROR;
bufdone(bp);
return;
}
/* Issue translated blocks */
bp->b_resid = bp->b_bcount;
/* Note virtual block 0 marks not mapped */
if (vblk == 0) {
vfs_bio_clrbuf(bp);
bufdone(bp);
return;
}
nbp = bp;
nbp->b_blkno = pblk * blk2dev;
bp->b_iooffset = dbtob(nbp->b_blkno);
MPASS(bp->b_iooffset >= 0);
BO_STRATEGY(&nandfsdev->nd_devvp->v_bufobj, nbp);
nandfs_vblk_set(bp, vblk);
DPRINTF(READ, ("read_filebuf : ino %#jx blk %#jx -> "
"%#jx -> %#jx [bp %p]\n", (uintmax_t)node->nn_ino,
(uintmax_t)(from), (uintmax_t)vblk,
(uintmax_t)pblk, nbp));
}
static void
nandfs_write_filebuf(struct nandfs_node *node, struct buf *bp)
{
struct nandfs_device *nandfsdev = node->nn_nandfsdev;
bp->b_iooffset = dbtob(bp->b_blkno);
MPASS(bp->b_iooffset >= 0);
BO_STRATEGY(&nandfsdev->nd_devvp->v_bufobj, bp);
}
static int
nandfs_strategy(struct vop_strategy_args *ap)
{
struct vnode *vp = ap->a_vp;
struct buf *bp = ap->a_bp;
struct nandfs_node *node = VTON(vp);
/* check if we ought to be here */
KASSERT((vp->v_type != VBLK && vp->v_type != VCHR),
("nandfs_strategy on type %d", vp->v_type));
/* Translate if needed and pass on */
if (bp->b_iocmd == BIO_READ) {
nandfs_read_filebuf(node, bp);
return (0);
}
/* Send to segment collector */
nandfs_write_filebuf(node, bp);
return (0);
}
static int
nandfs_readdir(struct vop_readdir_args *ap)
{
struct uio *uio = ap->a_uio;
struct vnode *vp = ap->a_vp;
struct nandfs_node *node = VTON(vp);
struct nandfs_dir_entry *ndirent;
struct dirent dirent;
struct buf *bp;
uint64_t file_size, diroffset, transoffset, blkoff;
uint64_t blocknr;
uint32_t blocksize = node->nn_nandfsdev->nd_blocksize;
uint8_t *pos, name_len;
int error;
DPRINTF(READDIR, ("nandfs_readdir called\n"));
if (vp->v_type != VDIR)
return (ENOTDIR);
file_size = node->nn_inode.i_size;
DPRINTF(READDIR, ("nandfs_readdir filesize %jd resid %zd\n",
(uintmax_t)file_size, uio->uio_resid ));
/* We are called just as long as we keep on pushing data in */
error = 0;
if ((uio->uio_offset < file_size) &&
(uio->uio_resid >= sizeof(struct dirent))) {
diroffset = uio->uio_offset;
transoffset = diroffset;
blocknr = diroffset / blocksize;
blkoff = diroffset % blocksize;
error = nandfs_bread(node, blocknr, NOCRED, 0, &bp);
if (error) {
brelse(bp);
return (EIO);
}
while (diroffset < file_size) {
DPRINTF(READDIR, ("readdir : offset = %"PRIu64"\n",
diroffset));
if (blkoff >= blocksize) {
blkoff = 0; blocknr++;
brelse(bp);
error = nandfs_bread(node, blocknr, NOCRED, 0,
&bp);
if (error) {
brelse(bp);
return (EIO);
}
}
/* Read in one dirent */
pos = (uint8_t *)bp->b_data + blkoff;
ndirent = (struct nandfs_dir_entry *)pos;
name_len = ndirent->name_len;
memset(&dirent, 0, sizeof(struct dirent));
dirent.d_fileno = ndirent->inode;
if (dirent.d_fileno) {
dirent.d_type = ndirent->file_type;
dirent.d_namlen = name_len;
strncpy(dirent.d_name, ndirent->name, name_len);
dirent.d_reclen = GENERIC_DIRSIZ(&dirent);
DPRINTF(READDIR, ("copying `%*.*s`\n", name_len,
name_len, dirent.d_name));
}
/*
* If there isn't enough space in the uio to return a
* whole dirent, break off read
*/
if (uio->uio_resid < GENERIC_DIRSIZ(&dirent))
break;
/* Transfer */
if (dirent.d_fileno)
uiomove(&dirent, GENERIC_DIRSIZ(&dirent), uio);
/* Advance */
diroffset += ndirent->rec_len;
blkoff += ndirent->rec_len;
/* Remember the last entry we transfered */
transoffset = diroffset;
}
brelse(bp);
/* Pass on last transfered offset */
uio->uio_offset = transoffset;
}
if (ap->a_eofflag)
*ap->a_eofflag = (uio->uio_offset >= file_size);
return (error);
}
static int
nandfs_dirempty(struct vnode *dvp, uint64_t parentino, struct ucred *cred)
{
struct nandfs_node *dnode = VTON(dvp);
struct nandfs_dir_entry *dirent;
uint64_t file_size = dnode->nn_inode.i_size;
uint64_t blockcount = dnode->nn_inode.i_blocks;
uint64_t blocknr;
uint32_t blocksize = dnode->nn_nandfsdev->nd_blocksize;
uint32_t limit;
uint32_t off;
uint8_t *pos;
struct buf *bp;
int error;
DPRINTF(LOOKUP, ("%s: dvp %p parentino %#jx cred %p\n", __func__, dvp,
(uintmax_t)parentino, cred));
KASSERT((file_size != 0), ("nandfs_dirempty for NULL dir %p", dvp));
blocknr = 0;
while (blocknr < blockcount) {
error = nandfs_bread(dnode, blocknr, NOCRED, 0, &bp);
if (error) {
brelse(bp);
return (0);
}
pos = (uint8_t *)bp->b_data;
off = 0;
if (blocknr == (blockcount - 1))
limit = file_size % blocksize;
else
limit = blocksize;
while (off < limit) {
dirent = (struct nandfs_dir_entry *)(pos + off);
off += dirent->rec_len;
if (dirent->inode == 0)
continue;
switch (dirent->name_len) {
case 0:
break;
case 1:
if (dirent->name[0] != '.')
goto notempty;
KASSERT(dirent->inode == dnode->nn_ino,
(".'s inode does not match dir"));
break;
case 2:
if (dirent->name[0] != '.' &&
dirent->name[1] != '.')
goto notempty;
KASSERT(dirent->inode == parentino,
("..'s inode does not match parent"));
break;
default:
goto notempty;
}
}
brelse(bp);
blocknr++;
}
return (1);
notempty:
brelse(bp);
return (0);
}
static int
nandfs_link(struct vop_link_args *ap)
{
struct vnode *tdvp = ap->a_tdvp;
struct vnode *vp = ap->a_vp;
struct componentname *cnp = ap->a_cnp;
struct nandfs_node *node = VTON(vp);
struct nandfs_inode *inode = &node->nn_inode;
int error;
if (tdvp->v_mount != vp->v_mount)
return (EXDEV);
if (inode->i_links_count >= LINK_MAX)
return (EMLINK);
if (inode->i_flags & (IMMUTABLE | APPEND))
return (EPERM);
/* Update link count */
inode->i_links_count++;
/* Add dir entry */
error = nandfs_add_dirent(tdvp, node->nn_ino, cnp->cn_nameptr,
cnp->cn_namelen, IFTODT(inode->i_mode));
if (error) {
inode->i_links_count--;
}
node->nn_flags |= IN_CHANGE;
nandfs_itimes(vp);
DPRINTF(VNCALL, ("%s: tdvp %p vp %p cnp %p\n",
__func__, tdvp, vp, cnp));
return (0);
}
static int
nandfs_create(struct vop_create_args *ap)
{
struct vnode *dvp = ap->a_dvp;
struct vnode **vpp = ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
uint16_t mode = MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode);
struct nandfs_node *dir_node = VTON(dvp);
struct nandfsmount *nmp = dir_node->nn_nmp;
struct nandfs_node *node;
int error;
DPRINTF(VNCALL, ("%s: dvp %p\n", __func__, dvp));
if (nandfs_fs_full(dir_node->nn_nandfsdev))
return (ENOSPC);
/* Create new vnode/inode */
error = nandfs_node_create(nmp, &node, mode);
if (error)
return (error);
node->nn_inode.i_gid = dir_node->nn_inode.i_gid;
node->nn_inode.i_uid = cnp->cn_cred->cr_uid;
/* Add new dir entry */
error = nandfs_add_dirent(dvp, node->nn_ino, cnp->cn_nameptr,
cnp->cn_namelen, IFTODT(mode));
if (error) {
if (nandfs_node_destroy(node)) {
nandfs_error("%s: error destroying node %p\n",
__func__, node);
}
return (error);
}
*vpp = NTOV(node);
DPRINTF(VNCALL, ("created file vp %p nandnode %p ino %jx\n", *vpp, node,
(uintmax_t)node->nn_ino));
return (0);
}
static int
nandfs_remove(struct vop_remove_args *ap)
{
struct vnode *vp = ap->a_vp;
struct vnode *dvp = ap->a_dvp;
struct nandfs_node *node = VTON(vp);
struct nandfs_node *dnode = VTON(dvp);
struct componentname *cnp = ap->a_cnp;
DPRINTF(VNCALL, ("%s: dvp %p vp %p nandnode %p ino %#jx link %d\n",
__func__, dvp, vp, node, (uintmax_t)node->nn_ino,
node->nn_inode.i_links_count));
if (vp->v_type == VDIR)
return (EISDIR);
/* Files marked as immutable or append-only cannot be deleted. */
if ((node->nn_inode.i_flags & (IMMUTABLE | APPEND | NOUNLINK)) ||
(dnode->nn_inode.i_flags & APPEND))
return (EPERM);
nandfs_remove_dirent(dvp, node, cnp);
node->nn_inode.i_links_count--;
node->nn_flags |= IN_CHANGE;
return (0);
}
/*
* Check if source directory is in the path of the target directory.
* Target is supplied locked, source is unlocked.
* The target is always vput before returning.
*/
static int
nandfs_checkpath(struct nandfs_node *src, struct nandfs_node *dest,
struct ucred *cred)
{
struct vnode *vp;
int error, rootino;
struct nandfs_dir_entry dirent;
vp = NTOV(dest);
if (src->nn_ino == dest->nn_ino) {
error = EEXIST;
goto out;
}
rootino = NANDFS_ROOT_INO;
error = 0;
if (dest->nn_ino == rootino)
goto out;
for (;;) {
if (vp->v_type != VDIR) {
error = ENOTDIR;
break;
}
error = vn_rdwr(UIO_READ, vp, (caddr_t)&dirent,
NANDFS_DIR_REC_LEN(2), (off_t)0, UIO_SYSSPACE,
IO_NODELOCKED | IO_NOMACCHECK, cred, NOCRED,
NULL, NULL);
if (error != 0)
break;
if (dirent.name_len != 2 ||
dirent.name[0] != '.' ||
dirent.name[1] != '.') {
error = ENOTDIR;
break;
}
if (dirent.inode == src->nn_ino) {
error = EINVAL;
break;
}
if (dirent.inode == rootino)
break;
vput(vp);
if ((error = VFS_VGET(vp->v_mount, dirent.inode,
LK_EXCLUSIVE, &vp)) != 0) {
vp = NULL;
break;
}
}
out:
if (error == ENOTDIR)
printf("checkpath: .. not a directory\n");
if (vp != NULL)
vput(vp);
return (error);
}
static int
nandfs_rename(struct vop_rename_args *ap)
{
struct vnode *tvp = ap->a_tvp;
struct vnode *tdvp = ap->a_tdvp;
struct vnode *fvp = ap->a_fvp;
struct vnode *fdvp = ap->a_fdvp;
struct componentname *tcnp = ap->a_tcnp;
struct componentname *fcnp = ap->a_fcnp;
int doingdirectory = 0, oldparent = 0, newparent = 0;
int error = 0;
struct nandfs_node *fdnode, *fnode, *fnode1;
struct nandfs_node *tdnode = VTON(tdvp);
struct nandfs_node *tnode;
uint32_t tdflags, fflags, fdflags;
uint16_t mode;
DPRINTF(VNCALL, ("%s: fdvp:%p fvp:%p tdvp:%p tdp:%p\n", __func__, fdvp,
fvp, tdvp, tvp));
/*
* Check for cross-device rename.
*/
if ((fvp->v_mount != tdvp->v_mount) ||
(tvp && (fvp->v_mount != tvp->v_mount))) {
error = EXDEV;
abortit:
if (tdvp == tvp)
vrele(tdvp);
else
vput(tdvp);
if (tvp)
vput(tvp);
vrele(fdvp);
vrele(fvp);
return (error);
}
tdflags = tdnode->nn_inode.i_flags;
if (tvp &&
((VTON(tvp)->nn_inode.i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
(tdflags & APPEND))) {
error = EPERM;
goto abortit;
}
/*
* Renaming a file to itself has no effect. The upper layers should
* not call us in that case. Temporarily just warn if they do.
*/
if (fvp == tvp) {
printf("nandfs_rename: fvp == tvp (can't happen)\n");
error = 0;
goto abortit;
}
if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
goto abortit;
fdnode = VTON(fdvp);
fnode = VTON(fvp);
if (fnode->nn_inode.i_links_count >= LINK_MAX) {
VOP_UNLOCK(fvp, 0);
error = EMLINK;
goto abortit;
}
fflags = fnode->nn_inode.i_flags;
fdflags = fdnode->nn_inode.i_flags;
if ((fflags & (NOUNLINK | IMMUTABLE | APPEND)) ||
(fdflags & APPEND)) {
VOP_UNLOCK(fvp, 0);
error = EPERM;
goto abortit;
}
mode = fnode->nn_inode.i_mode;
if ((mode & S_IFMT) == S_IFDIR) {
/*
* Avoid ".", "..", and aliases of "." for obvious reasons.
*/
if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
(fdvp == fvp) ||
((fcnp->cn_flags | tcnp->cn_flags) & ISDOTDOT) ||
(fnode->nn_flags & IN_RENAME)) {
VOP_UNLOCK(fvp, 0);
error = EINVAL;
goto abortit;
}
fnode->nn_flags |= IN_RENAME;
doingdirectory = 1;
DPRINTF(VNCALL, ("%s: doingdirectory dvp %p\n", __func__,
tdvp));
oldparent = fdnode->nn_ino;
}
vrele(fdvp);
tnode = NULL;
if (tvp)
tnode = VTON(tvp);
/*
* Bump link count on fvp while we are moving stuff around. If we
* crash before completing the work, the link count may be wrong
* but correctable.
*/
fnode->nn_inode.i_links_count++;
/* Check for in path moving XXX */
error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_thread);
VOP_UNLOCK(fvp, 0);
if (oldparent != tdnode->nn_ino)
newparent = tdnode->nn_ino;
if (doingdirectory && newparent) {
if (error) /* write access check above */
goto bad;
if (tnode != NULL)
vput(tvp);
error = nandfs_checkpath(fnode, tdnode, tcnp->cn_cred);
if (error)
goto out;
VREF(tdvp);
error = relookup(tdvp, &tvp, tcnp);
if (error)
goto out;
vrele(tdvp);
tdnode = VTON(tdvp);
tnode = NULL;
if (tvp)
tnode = VTON(tvp);
}
/*
* If the target doesn't exist, link the target to the source and
* unlink the source. Otherwise, rewrite the target directory to
* reference the source and remove the original entry.
*/
if (tvp == NULL) {
/*
* Account for ".." in new directory.
*/
if (doingdirectory && fdvp != tdvp)
tdnode->nn_inode.i_links_count++;
DPRINTF(VNCALL, ("%s: new entry in dvp:%p\n", __func__, tdvp));
/*
* Add name in new directory.
*/
error = nandfs_add_dirent(tdvp, fnode->nn_ino, tcnp->cn_nameptr,
tcnp->cn_namelen, IFTODT(fnode->nn_inode.i_mode));
if (error) {
if (doingdirectory && fdvp != tdvp)
tdnode->nn_inode.i_links_count--;
goto bad;
}
vput(tdvp);
} else {
/*
* If the parent directory is "sticky", then the user must
* own the parent directory, or the destination of the rename,
* otherwise the destination may not be changed (except by
* root). This implements append-only directories.
*/
if ((tdnode->nn_inode.i_mode & S_ISTXT) &&
tcnp->cn_cred->cr_uid != 0 &&
tcnp->cn_cred->cr_uid != tdnode->nn_inode.i_uid &&
tnode->nn_inode.i_uid != tcnp->cn_cred->cr_uid) {
error = EPERM;
goto bad;
}
/*
* Target must be empty if a directory and have no links
* to it. Also, ensure source and target are compatible
* (both directories, or both not directories).
*/
mode = tnode->nn_inode.i_mode;
if ((mode & S_IFMT) == S_IFDIR) {
if (!nandfs_dirempty(tvp, tdnode->nn_ino,
tcnp->cn_cred)) {
error = ENOTEMPTY;
goto bad;
}
if (!doingdirectory) {
error = ENOTDIR;
goto bad;
}
/*
* Update name cache since directory is going away.
*/
cache_purge(tdvp);
} else if (doingdirectory) {
error = EISDIR;
goto bad;
}
DPRINTF(VNCALL, ("%s: update entry dvp:%p\n", __func__, tdvp));
/*
* Change name tcnp in tdvp to point at fvp.
*/
error = nandfs_update_dirent(tdvp, fnode, tnode);
if (error)
goto bad;
if (doingdirectory && !newparent)
tdnode->nn_inode.i_links_count--;
vput(tdvp);
tnode->nn_inode.i_links_count--;
vput(tvp);
tnode = NULL;
}
/*
* Unlink the source.
*/
fcnp->cn_flags &= ~MODMASK;
fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
VREF(fdvp);
error = relookup(fdvp, &fvp, fcnp);
if (error == 0)
vrele(fdvp);
if (fvp != NULL) {
fnode1 = VTON(fvp);
fdnode = VTON(fdvp);
} else {
/*
* From name has disappeared.
*/
if (doingdirectory)
panic("nandfs_rename: lost dir entry");
vrele(ap->a_fvp);
return (0);
}
DPRINTF(VNCALL, ("%s: unlink source fnode:%p\n", __func__, fnode));
/*
* Ensure that the directory entry still exists and has not
* changed while the new name has been entered. If the source is
* a file then the entry may have been unlinked or renamed. In
* either case there is no further work to be done. If the source
* is a directory then it cannot have been rmdir'ed; its link
* count of three would cause a rmdir to fail with ENOTEMPTY.
* The IN_RENAME flag ensures that it cannot be moved by another
* rename.
*/
if (fnode != fnode1) {
if (doingdirectory)
panic("nandfs: lost dir entry");
} else {
/*
* If the source is a directory with a
* new parent, the link count of the old
* parent directory must be decremented
* and ".." set to point to the new parent.
*/
if (doingdirectory && newparent) {
DPRINTF(VNCALL, ("%s: new parent %#jx -> %#jx\n",
__func__, (uintmax_t) oldparent,
(uintmax_t) newparent));
error = nandfs_update_parent_dir(fvp, newparent);
if (!error) {
fdnode->nn_inode.i_links_count--;
fdnode->nn_flags |= IN_CHANGE;
}
}
error = nandfs_remove_dirent(fdvp, fnode, fcnp);
if (!error) {
fnode->nn_inode.i_links_count--;
fnode->nn_flags |= IN_CHANGE;
}
fnode->nn_flags &= ~IN_RENAME;
}
if (fdnode)
vput(fdvp);
if (fnode)
vput(fvp);
vrele(ap->a_fvp);
return (error);
bad:
DPRINTF(VNCALL, ("%s: error:%d\n", __func__, error));
if (tnode)
vput(NTOV(tnode));
vput(NTOV(tdnode));
out:
if (doingdirectory)
fnode->nn_flags &= ~IN_RENAME;
if (vn_lock(fvp, LK_EXCLUSIVE) == 0) {
fnode->nn_inode.i_links_count--;
fnode->nn_flags |= IN_CHANGE;
fnode->nn_flags &= ~IN_RENAME;
vput(fvp);
} else
vrele(fvp);
return (error);
}
static int
nandfs_mkdir(struct vop_mkdir_args *ap)
{
struct vnode *dvp = ap->a_dvp;
struct vnode **vpp = ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
struct nandfs_node *dir_node = VTON(dvp);
struct nandfs_inode *dir_inode = &dir_node->nn_inode;
struct nandfs_node *node;
struct nandfsmount *nmp = dir_node->nn_nmp;
uint16_t mode = MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode);
int error;
DPRINTF(VNCALL, ("%s: dvp %p\n", __func__, dvp));
if (nandfs_fs_full(dir_node->nn_nandfsdev))
return (ENOSPC);
if (dir_inode->i_links_count >= LINK_MAX)
return (EMLINK);
error = nandfs_node_create(nmp, &node, mode);
if (error)
return (error);
node->nn_inode.i_gid = dir_node->nn_inode.i_gid;
node->nn_inode.i_uid = cnp->cn_cred->cr_uid;
*vpp = NTOV(node);
error = nandfs_add_dirent(dvp, node->nn_ino, cnp->cn_nameptr,
cnp->cn_namelen, IFTODT(mode));
if (error) {
vput(*vpp);
return (error);
}
dir_node->nn_inode.i_links_count++;
dir_node->nn_flags |= IN_CHANGE;
error = nandfs_init_dir(NTOV(node), node->nn_ino, dir_node->nn_ino);
if (error) {
vput(NTOV(node));
return (error);
}
DPRINTF(VNCALL, ("created dir vp %p nandnode %p ino %jx\n", *vpp, node,
(uintmax_t)node->nn_ino));
return (0);
}
static int
nandfs_mknod(struct vop_mknod_args *ap)
{
struct vnode *dvp = ap->a_dvp;
struct vnode **vpp = ap->a_vpp;
struct vattr *vap = ap->a_vap;
uint16_t mode = MAKEIMODE(vap->va_type, vap->va_mode);
struct componentname *cnp = ap->a_cnp;
struct nandfs_node *dir_node = VTON(dvp);
struct nandfsmount *nmp = dir_node->nn_nmp;
struct nandfs_node *node;
int error;
if (nandfs_fs_full(dir_node->nn_nandfsdev))
return (ENOSPC);
error = nandfs_node_create(nmp, &node, mode);
if (error)
return (error);
node->nn_inode.i_gid = dir_node->nn_inode.i_gid;
node->nn_inode.i_uid = cnp->cn_cred->cr_uid;
if (vap->va_rdev != VNOVAL)
node->nn_inode.i_special = vap->va_rdev;
*vpp = NTOV(node);
if (nandfs_add_dirent(dvp, node->nn_ino, cnp->cn_nameptr,
cnp->cn_namelen, IFTODT(mode))) {
vput(*vpp);
return (ENOTDIR);
}
node->nn_flags |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
return (0);
}
static int
nandfs_symlink(struct vop_symlink_args *ap)
{
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
uint16_t mode = MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode);
struct componentname *cnp = ap->a_cnp;
struct nandfs_node *dir_node = VTON(dvp);
struct nandfsmount *nmp = dir_node->nn_nmp;
struct nandfs_node *node;
int len, error;
if (nandfs_fs_full(dir_node->nn_nandfsdev))
return (ENOSPC);
error = nandfs_node_create(nmp, &node, S_IFLNK | mode);
if (error)
return (error);
node->nn_inode.i_gid = dir_node->nn_inode.i_gid;
node->nn_inode.i_uid = cnp->cn_cred->cr_uid;
*vpp = NTOV(node);
if (nandfs_add_dirent(dvp, node->nn_ino, cnp->cn_nameptr,
cnp->cn_namelen, IFTODT(mode))) {
vput(*vpp);
return (ENOTDIR);
}
len = strlen(ap->a_target);
error = vn_rdwr(UIO_WRITE, *vpp, ap->a_target, len, (off_t)0,
UIO_SYSSPACE, IO_NODELOCKED | IO_NOMACCHECK,
cnp->cn_cred, NOCRED, NULL, NULL);
if (error)
vput(*vpp);
return (error);
}
static int
nandfs_readlink(struct vop_readlink_args *ap)
{
struct vnode *vp = ap->a_vp;
return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
}
static int
nandfs_rmdir(struct vop_rmdir_args *ap)
{
struct vnode *vp = ap->a_vp;
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
struct nandfs_node *node, *dnode;
uint32_t dflag, flag;
int error = 0;
node = VTON(vp);
dnode = VTON(dvp);
/* Files marked as immutable or append-only cannot be deleted. */
if ((node->nn_inode.i_flags & (IMMUTABLE | APPEND | NOUNLINK)) ||
(dnode->nn_inode.i_flags & APPEND))
return (EPERM);
DPRINTF(VNCALL, ("%s: dvp %p vp %p nandnode %p ino %#jx\n", __func__,
dvp, vp, node, (uintmax_t)node->nn_ino));
if (node->nn_inode.i_links_count < 2)
return (EINVAL);
if (!nandfs_dirempty(vp, dnode->nn_ino, cnp->cn_cred))
return (ENOTEMPTY);
/* Files marked as immutable or append-only cannot be deleted. */
dflag = dnode->nn_inode.i_flags;
flag = node->nn_inode.i_flags;
if ((dflag & APPEND) ||
(flag & (NOUNLINK | IMMUTABLE | APPEND))) {
return (EPERM);
}
if (vp->v_mountedhere != 0)
return (EINVAL);
nandfs_remove_dirent(dvp, node, cnp);
dnode->nn_inode.i_links_count -= 1;
dnode->nn_flags |= IN_CHANGE;
cache_purge(dvp);
error = nandfs_truncate(vp, (uint64_t)0);
if (error)
return (error);
node->nn_inode.i_links_count -= 2;
node->nn_flags |= IN_CHANGE;
cache_purge(vp);
return (error);
}
static int
nandfs_fsync(struct vop_fsync_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *node = VTON(vp);
int locked;
DPRINTF(VNCALL, ("%s: vp %p nandnode %p ino %#jx\n", __func__, vp,
node, (uintmax_t)node->nn_ino));
/*
* Start syncing vnode only if inode was modified or
* there are some dirty buffers
*/
if (VTON(vp)->nn_flags & IN_MODIFIED ||
vp->v_bufobj.bo_dirty.bv_cnt) {
locked = VOP_ISLOCKED(vp);
VOP_UNLOCK(vp, 0);
nandfs_wakeup_wait_sync(node->nn_nandfsdev, SYNCER_FSYNC);
VOP_LOCK(vp, locked | LK_RETRY);
}
return (0);
}
static int
nandfs_bmap(struct vop_bmap_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *nnode = VTON(vp);
struct nandfs_device *nandfsdev = nnode->nn_nandfsdev;
nandfs_daddr_t l2vmap, v2pmap;
int error;
int blk2dev = nandfsdev->nd_blocksize / DEV_BSIZE;
DPRINTF(VNCALL, ("%s: vp %p nandnode %p ino %#jx\n", __func__, vp,
nnode, (uintmax_t)nnode->nn_ino));
if (ap->a_bop != NULL)
*ap->a_bop = &nandfsdev->nd_devvp->v_bufobj;
if (ap->a_bnp == NULL)
return (0);
if (ap->a_runp != NULL)
*ap->a_runp = 0;
if (ap->a_runb != NULL)
*ap->a_runb = 0;
/*
* Translate all the block sectors into a series of buffers to read
* asynchronously from the nandfs device. Note that this lookup may
* induce readin's too.
*/
/* Get virtual block numbers for the vnode's buffer span */
error = nandfs_bmap_lookup(nnode, ap->a_bn, &l2vmap);
if (error)
return (-1);
/* Translate virtual block numbers to physical block numbers */
error = nandfs_vtop(nnode, l2vmap, &v2pmap);
if (error)
return (-1);
/* Note virtual block 0 marks not mapped */
if (l2vmap == 0)
*ap->a_bnp = -1;
else
*ap->a_bnp = v2pmap * blk2dev; /* in DEV_BSIZE */
DPRINTF(VNCALL, ("%s: vp %p nandnode %p ino %#jx lblk %jx -> blk %jx\n",
__func__, vp, nnode, (uintmax_t)nnode->nn_ino, (uintmax_t)ap->a_bn,
(uintmax_t)*ap->a_bnp ));
return (0);
}
static void
nandfs_force_syncer(struct nandfsmount *nmp)
{
nmp->nm_flags |= NANDFS_FORCE_SYNCER;
nandfs_wakeup_wait_sync(nmp->nm_nandfsdev, SYNCER_FFORCE);
}
static int
nandfs_ioctl(struct vop_ioctl_args *ap)
{
struct vnode *vp = ap->a_vp;
u_long command = ap->a_command;
caddr_t data = ap->a_data;
struct nandfs_node *node = VTON(vp);
struct nandfs_device *nandfsdev = node->nn_nandfsdev;
struct nandfsmount *nmp = node->nn_nmp;
uint64_t *tab, *cno;
struct nandfs_seg_stat *nss;
struct nandfs_cpmode *ncpm;
struct nandfs_argv *nargv;
struct nandfs_cpstat *ncp;
int error;
DPRINTF(VNCALL, ("%s: %x\n", __func__, (uint32_t)command));
error = priv_check(ap->a_td, PRIV_VFS_MOUNT);
if (error)
return (error);
if (nmp->nm_ronly) {
switch (command) {
case NANDFS_IOCTL_GET_FSINFO:
case NANDFS_IOCTL_GET_SUSTAT:
case NANDFS_IOCTL_GET_CPINFO:
case NANDFS_IOCTL_GET_CPSTAT:
case NANDFS_IOCTL_GET_SUINFO:
case NANDFS_IOCTL_GET_VINFO:
case NANDFS_IOCTL_GET_BDESCS:
break;
default:
return (EROFS);
}
}
switch (command) {
case NANDFS_IOCTL_GET_FSINFO:
error = nandfs_get_fsinfo(nmp, (struct nandfs_fsinfo *)data);
break;
case NANDFS_IOCTL_GET_SUSTAT:
nss = (struct nandfs_seg_stat *)data;
error = nandfs_get_seg_stat(nandfsdev, nss);
break;
case NANDFS_IOCTL_CHANGE_CPMODE:
ncpm = (struct nandfs_cpmode *)data;
error = nandfs_chng_cpmode(nandfsdev->nd_cp_node, ncpm);
nandfs_force_syncer(nmp);
break;
case NANDFS_IOCTL_GET_CPINFO:
nargv = (struct nandfs_argv *)data;
error = nandfs_get_cpinfo_ioctl(nandfsdev->nd_cp_node, nargv);
break;
case NANDFS_IOCTL_DELETE_CP:
tab = (uint64_t *)data;
error = nandfs_delete_cp(nandfsdev->nd_cp_node, tab[0], tab[1]);
nandfs_force_syncer(nmp);
break;
case NANDFS_IOCTL_GET_CPSTAT:
ncp = (struct nandfs_cpstat *)data;
error = nandfs_get_cpstat(nandfsdev->nd_cp_node, ncp);
break;
case NANDFS_IOCTL_GET_SUINFO:
nargv = (struct nandfs_argv *)data;
error = nandfs_get_segment_info_ioctl(nandfsdev, nargv);
break;
case NANDFS_IOCTL_GET_VINFO:
nargv = (struct nandfs_argv *)data;
error = nandfs_get_dat_vinfo_ioctl(nandfsdev, nargv);
break;
case NANDFS_IOCTL_GET_BDESCS:
nargv = (struct nandfs_argv *)data;
error = nandfs_get_dat_bdescs_ioctl(nandfsdev, nargv);
break;
case NANDFS_IOCTL_SYNC:
cno = (uint64_t *)data;
nandfs_force_syncer(nmp);
*cno = nandfsdev->nd_last_cno;
error = 0;
break;
case NANDFS_IOCTL_MAKE_SNAP:
cno = (uint64_t *)data;
error = nandfs_make_snap(nandfsdev, cno);
nandfs_force_syncer(nmp);
break;
case NANDFS_IOCTL_DELETE_SNAP:
cno = (uint64_t *)data;
error = nandfs_delete_snap(nandfsdev, *cno);
nandfs_force_syncer(nmp);
break;
default:
error = ENOTTY;
break;
}
return (error);
}
/*
* Whiteout vnode call
*/
static int
nandfs_whiteout(struct vop_whiteout_args *ap)
{
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
int error = 0;
switch (ap->a_flags) {
case LOOKUP:
return (0);
case CREATE:
/* Create a new directory whiteout */
#ifdef INVARIANTS
if ((cnp->cn_flags & SAVENAME) == 0)
panic("ufs_whiteout: missing name");
#endif
error = nandfs_add_dirent(dvp, NANDFS_WHT_INO, cnp->cn_nameptr,
cnp->cn_namelen, DT_WHT);
break;
case DELETE:
/* Remove an existing directory whiteout */
cnp->cn_flags &= ~DOWHITEOUT;
error = nandfs_remove_dirent(dvp, NULL, cnp);
break;
default:
panic("nandf_whiteout: unknown op: %d", ap->a_flags);
}
return (error);
}
static int
nandfs_pathconf(struct vop_pathconf_args *ap)
{
int error;
error = 0;
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = LINK_MAX;
break;
case _PC_NAME_MAX:
*ap->a_retval = NAME_MAX;
break;
case _PC_PATH_MAX:
*ap->a_retval = PATH_MAX;
break;
case _PC_PIPE_BUF:
*ap->a_retval = PIPE_BUF;
break;
case _PC_CHOWN_RESTRICTED:
*ap->a_retval = 1;
break;
case _PC_NO_TRUNC:
*ap->a_retval = 1;
break;
case _PC_ACL_EXTENDED:
*ap->a_retval = 0;
break;
case _PC_ALLOC_SIZE_MIN:
*ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize;
break;
case _PC_FILESIZEBITS:
*ap->a_retval = 64;
break;
case _PC_REC_INCR_XFER_SIZE:
*ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
break;
case _PC_REC_MAX_XFER_SIZE:
*ap->a_retval = -1; /* means ``unlimited'' */
break;
case _PC_REC_MIN_XFER_SIZE:
*ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
break;
default:
error = EINVAL;
break;
}
return (error);
}
static int
nandfs_vnlock1(struct vop_lock1_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *node = VTON(vp);
int error, vi_locked;
/*
* XXX can vnode go away while we are sleeping?
*/
vi_locked = mtx_owned(&vp->v_interlock);
if (vi_locked)
VI_UNLOCK(vp);
error = NANDFS_WRITELOCKFLAGS(node->nn_nandfsdev,
ap->a_flags & LK_NOWAIT);
if (vi_locked && !error)
VI_LOCK(vp);
if (error)
return (error);
error = vop_stdlock(ap);
if (error) {
NANDFS_WRITEUNLOCK(node->nn_nandfsdev);
return (error);
}
return (0);
}
static int
nandfs_vnunlock(struct vop_unlock_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *node = VTON(vp);
int error;
error = vop_stdunlock(ap);
if (error)
return (error);
NANDFS_WRITEUNLOCK(node->nn_nandfsdev);
return (0);
}
/*
* Global vfs data structures
*/
struct vop_vector nandfs_vnodeops = {
.vop_default = &default_vnodeops,
.vop_access = nandfs_access,
.vop_advlock = nandfs_advlock,
.vop_bmap = nandfs_bmap,
.vop_close = nandfs_close,
.vop_create = nandfs_create,
.vop_fsync = nandfs_fsync,
.vop_getattr = nandfs_getattr,
.vop_inactive = nandfs_inactive,
.vop_cachedlookup = nandfs_lookup,
.vop_ioctl = nandfs_ioctl,
.vop_link = nandfs_link,
.vop_lookup = vfs_cache_lookup,
.vop_mkdir = nandfs_mkdir,
.vop_mknod = nandfs_mknod,
.vop_open = nandfs_open,
.vop_pathconf = nandfs_pathconf,
.vop_print = nandfs_print,
.vop_read = nandfs_read,
.vop_readdir = nandfs_readdir,
.vop_readlink = nandfs_readlink,
.vop_reclaim = nandfs_reclaim,
.vop_remove = nandfs_remove,
.vop_rename = nandfs_rename,
.vop_rmdir = nandfs_rmdir,
.vop_whiteout = nandfs_whiteout,
.vop_write = nandfs_write,
.vop_setattr = nandfs_setattr,
.vop_strategy = nandfs_strategy,
.vop_symlink = nandfs_symlink,
.vop_lock1 = nandfs_vnlock1,
.vop_unlock = nandfs_vnunlock,
};
struct vop_vector nandfs_system_vnodeops = {
.vop_default = &default_vnodeops,
.vop_close = nandfs_close,
.vop_inactive = nandfs_inactive,
.vop_reclaim = nandfs_reclaim,
.vop_strategy = nandfs_strategy,
.vop_fsync = nandfs_fsync,
.vop_bmap = nandfs_bmap,
.vop_access = VOP_PANIC,
.vop_advlock = VOP_PANIC,
.vop_create = VOP_PANIC,
.vop_getattr = VOP_PANIC,
.vop_cachedlookup = VOP_PANIC,
.vop_ioctl = VOP_PANIC,
.vop_link = VOP_PANIC,
.vop_lookup = VOP_PANIC,
.vop_mkdir = VOP_PANIC,
.vop_mknod = VOP_PANIC,
.vop_open = VOP_PANIC,
.vop_pathconf = VOP_PANIC,
.vop_print = VOP_PANIC,
.vop_read = VOP_PANIC,
.vop_readdir = VOP_PANIC,
.vop_readlink = VOP_PANIC,
.vop_remove = VOP_PANIC,
.vop_rename = VOP_PANIC,
.vop_rmdir = VOP_PANIC,
.vop_whiteout = VOP_PANIC,
.vop_write = VOP_PANIC,
.vop_setattr = VOP_PANIC,
.vop_symlink = VOP_PANIC,
};
static int
nandfsfifo_close(struct vop_close_args *ap)
{
struct vnode *vp = ap->a_vp;
struct nandfs_node *node = VTON(vp);
DPRINTF(VNCALL, ("%s: vp %p node %p\n", __func__, vp, node));
mtx_lock(&vp->v_interlock);
if (vp->v_usecount > 1)
nandfs_itimes_locked(vp);
mtx_unlock(&vp->v_interlock);
return (fifo_specops.vop_close(ap));
}
struct vop_vector nandfs_fifoops = {
.vop_default = &fifo_specops,
.vop_fsync = VOP_PANIC,
.vop_access = nandfs_access,
.vop_close = nandfsfifo_close,
.vop_getattr = nandfs_getattr,
.vop_inactive = nandfs_inactive,
.vop_print = nandfs_print,
.vop_read = VOP_PANIC,
.vop_reclaim = nandfs_reclaim,
.vop_setattr = nandfs_setattr,
.vop_write = VOP_PANIC,
.vop_lock1 = nandfs_vnlock1,
.vop_unlock = nandfs_vnunlock,
};
int
nandfs_vinit(struct vnode *vp, uint64_t ino)
{
struct nandfs_node *node;
ASSERT_VOP_LOCKED(vp, __func__);
node = VTON(vp);
/* Check if we're fetching the root */
if (ino == NANDFS_ROOT_INO)
vp->v_vflag |= VV_ROOT;
if (ino != NANDFS_GC_INO)
vp->v_type = IFTOVT(node->nn_inode.i_mode);
else
vp->v_type = VREG;
if (vp->v_type == VFIFO)
vp->v_op = &nandfs_fifoops;
return (0);
}
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