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Diffstat (limited to 'sys/fs/nandfs/nandfs_vnops.c')
-rw-r--r--sys/fs/nandfs/nandfs_vnops.c2454
1 files changed, 0 insertions, 2454 deletions
diff --git a/sys/fs/nandfs/nandfs_vnops.c b/sys/fs/nandfs/nandfs_vnops.c
deleted file mode 100644
index 5027d6adbbc1..000000000000
--- a/sys/fs/nandfs/nandfs_vnops.c
+++ /dev/null
@@ -1,2454 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * 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)
-{
- struct vnode *vp = ap->a_vp;
- 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) != 0)
- 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))
- return (EFTYPE);
- }
- if (!groupmember(inode->i_gid, cred) && (mode & ISGID)) {
- error = priv_check_cred(cred, PRIV_VFS_SETGID);
- 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);
- 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)))
- 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))
- 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 PR_ALLOW_CHFLAGS permission bit is set;
- * otherwise, they behave like unprivileged processes.
- */
-
- flags = inode->i_flags;
- if (!priv_check_cred(cred, PRIV_VFS_SYSFLAGS)) {
- 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 & VMODIFY_PERMS) && (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);
- }
-
- /* No one 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(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);
- /* NOTE: d_off is the offset of the *next* entry. */
- dirent.d_off = diroffset + ndirent->rec_len;
- dirent_terminate(&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, dirent.d_reclen, uio);
-
- /* Advance */
- diroffset += ndirent->rec_len;
- blkoff += ndirent->rec_len;
-
- /* Remember the last entry we transferred */
- transoffset = diroffset;
- }
- brelse(bp);
-
- /* Pass on last transferred 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 (inode->i_links_count >= NANDFS_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);
- if ((cnp->cn_flags & MAKEENTRY) != 0)
- cache_enter(dvp, *vpp, cnp);
-
- 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 >= NANDFS_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 >= NANDFS_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, __DECONST(void *, 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("nandfs_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 = NANDFS_LINK_MAX;
- break;
- case _PC_NAME_MAX:
- *ap->a_retval = NANDFS_NAME_LEN;
- break;
- case _PC_PIPE_BUF:
- if (ap->a_vp->v_type == VDIR || ap->a_vp->v_type == VFIFO)
- *ap->a_retval = PIPE_BUF;
- else
- error = EINVAL;
- break;
- case _PC_CHOWN_RESTRICTED:
- *ap->a_retval = 1;
- break;
- case _PC_NO_TRUNC:
- *ap->a_retval = 1;
- 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 = vop_stdpathconf(ap);
- 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_pathconf = nandfs_pathconf,
- .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);
-}