int
fusefs_write(void *v)
{
struct vop_write_args *ap = v;
struct vnode *vp = ap->a_vp;
struct uio *uio = ap->a_uio;
struct proc *p = uio->uio_procp;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf = NULL;
size_t len, diff;
int error=0;
DPRINTF("fusefs_write\n");
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
DPRINTF("write inode=%i, offset=%llu, resid=%x\n",
ip->ufs_ino.i_number, uio->uio_offset, uio->uio_resid);
if (uio->uio_resid == 0)
return (error);
while (uio->uio_resid > 0) {
len = MIN(uio->uio_resid, FUSELEN);
fbuf = fb_setup(FUSEFDSIZE + len, ip->ufs_ino.i_number,
FBT_WRITE, p);
fbuf->fb_io_fd = fusefs_fd_get(ip, FUFH_WRONLY);
fbuf->fb_io_off = uio->uio_offset;
fbuf->fb_io_len = len;
if ((error = uiomove(fbuf->fb_dat, len, uio))) {
DPRINTF("uio error %i", error);
break;
}
error = fb_queue(fmp->dev, fbuf);
if (error)
break;
diff = len - fbuf->fb_io_len;
if (diff < 0) {
error = EINVAL;
break;
}
uio->uio_resid += diff;
uio->uio_offset -= diff;
pool_put(&fusefs_fbuf_pool, fbuf);
fbuf = NULL;
}
if (fbuf)
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}
int
fusefs_getattr(void *v)
{
struct vop_getattr_args *ap = v;
struct vnode *vp = ap->a_vp;
struct fusefs_mnt *fmp;
struct vattr *vap = ap->a_vap;
struct proc *p = curproc;
struct fusefs_node *ip;
struct fusebuf *fbuf;
int error = 0;
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init)
goto fake;
fbuf = fb_setup(0, ip->ufs_ino.i_number, FBT_GETATTR, p);
error = fb_queue(fmp->dev, fbuf);
if (error) {
fb_delete(fbuf);
return (error);
}
update_vattr(fmp->mp, &fbuf->fb_vattr);
memcpy(vap, &fbuf->fb_vattr, sizeof(*vap));
fb_delete(fbuf);
return (error);
fake:
bzero(vap, sizeof(*vap));
vap->va_type = vp->v_type;
return (0);
}
int
fusefs_readdir(void *v)
{
struct vop_readdir_args *ap = v;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
struct vnode *vp;
struct proc *p;
struct uio *uio;
int error = 0;
vp = ap->a_vp;
uio = ap->a_uio;
p = uio->uio_procp;
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init)
return (0);
if (uio->uio_resid < sizeof(struct dirent))
return (EINVAL);
while (uio->uio_resid > 0) {
fbuf = fb_setup(0, ip->ufs_ino.i_number, FBT_READDIR, p);
if (ip->fufh[FUFH_RDONLY].fh_type == FUFH_INVALID) {
/* TODO open the file */
fb_delete(fbuf);
return (error);
}
fbuf->fb_io_fd = ip->fufh[FUFH_RDONLY].fh_id;
fbuf->fb_io_off = uio->uio_offset;
fbuf->fb_io_len = MIN(uio->uio_resid, FUSEBUFMAXSIZE);
error = fb_queue(fmp->dev, fbuf);
if (error) {
fb_delete(fbuf);
break;
}
/*ack end of readdir */
if (fbuf->fb_len == 0) {
fb_delete(fbuf);
break;
}
if ((error = uiomove(fbuf->fb_dat, fbuf->fb_len, uio))) {
fb_delete(fbuf);
break;
}
fb_delete(fbuf);
}
return (error);
}
int
fusefs_mkdir(void *v)
{
struct vop_mkdir_args *ap = v;
struct vnode *dvp = ap->a_dvp;
struct vnode **vpp = ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
struct vattr *vap = ap->a_vap;
struct proc *p = cnp->cn_proc;
struct vnode *tdp = NULL;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
int error = 0;
DPRINTF("fusefs_mkdir %s\n", cnp->cn_nameptr);
ip = VTOI(dvp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init || (fmp->undef_op & UNDEF_MKDIR)) {
error = ENOSYS;
goto out;
}
fbuf = fb_setup(FUSEFDSIZE + cnp->cn_namelen + 1, ip->ufs_ino.i_number,
FBT_MKDIR, p);
fbuf->fb_io_mode = MAKEIMODE(vap->va_type, vap->va_mode);
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_MKDIR;
pool_put(&fusefs_fbuf_pool, fbuf);
goto out;
}
if ((error = VFS_VGET(fmp->mp, fbuf->fb_ino, &tdp))) {
pool_put(&fusefs_fbuf_pool, fbuf);
goto out;
}
tdp->v_type = IFTOVT(fbuf->fb_io_mode);
VTOI(tdp)->vtype = tdp->v_type;
if (dvp != NULL && dvp->v_type == VDIR)
VTOI(tdp)->parent = ip->ufs_ino.i_number;
*vpp = tdp;
VN_KNOTE(ap->a_dvp, NOTE_WRITE | NOTE_LINK);
pool_put(&fusefs_fbuf_pool, fbuf);
out:
vput(dvp);
return (error);
}
int
fusefs_symlink(void *v)
{
struct vop_symlink_args *ap = v;
struct vnode **vpp = ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
struct vnode *dvp = ap->a_dvp;
struct proc *p = cnp->cn_proc;
char *target = ap->a_target;
struct fusefs_node *dp;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
struct vnode *tdp;
int error = 0;
int len;
dp = VTOI(dvp);
fmp = (struct fusefs_mnt *)dp->ufs_ino.i_ump;
if (!fmp->sess_init || (fmp->undef_op & UNDEF_SYMLINK)) {
error = ENOSYS;
goto bad;
}
len = strlen(target) + 1;
fbuf = fb_setup(len + cnp->cn_namelen + 1, dp->ufs_ino.i_number,
FBT_SYMLINK, p);
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
memcpy(&fbuf->fb_dat[cnp->cn_namelen + 1], target, len);
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_SYMLINK;
fb_delete(fbuf);
goto bad;
}
if ((error = VFS_VGET(fmp->mp, fbuf->fb_ino, &tdp))) {
fb_delete(fbuf);
goto bad;
}
tdp->v_type = VLNK;
VTOI(tdp)->vtype = tdp->v_type;
VTOI(tdp)->parent = dp->ufs_ino.i_number;
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
*vpp = tdp;
fb_delete(fbuf);
vput(tdp);
bad:
vput(dvp);
return (error);
}
int
fusefs_read(void *v)
{
struct vop_read_args *ap = v;
struct vnode *vp = ap->a_vp;
struct uio *uio = ap->a_uio;
struct proc *p = uio->uio_procp;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf = NULL;
size_t size;
int error=0;
DPRINTF("fusefs_read\n");
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
DPRINTF("read inode=%i, offset=%llu, resid=%x\n",
ip->ufs_ino.i_number, uio->uio_offset, uio->uio_resid);
if (uio->uio_resid == 0)
return (error);
if (uio->uio_offset < 0)
return (EINVAL);
while (uio->uio_resid > 0) {
fbuf = fb_setup(FUSEFDSIZE, ip->ufs_ino.i_number, FBT_READ, p);
size = MIN(uio->uio_resid, FUSELEN);
fbuf->fb_io_fd = fusefs_fd_get(ip, FUFH_RDONLY);
fbuf->fb_io_off = uio->uio_offset;
fbuf->fb_io_len = size;
error = fb_queue(fmp->dev, fbuf);
if (error)
break;
error = uiomove(fbuf->fb_dat, MIN(size, fbdatsize(fbuf)), uio);
if (error)
break;
if (fbdatsize(fbuf) < size)
break;
pool_put(&fusefs_fbuf_pool, fbuf);
fbuf = NULL;
}
if (fbuf)
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}
int
fusefs_remove(void *v)
{
struct vop_remove_args *ap = v;
struct vnode *vp = ap->a_vp;
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
struct proc *p = cnp->cn_proc;
struct fusefs_node *ip;
struct fusefs_node *dp;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
int error = 0;
ip = VTOI(vp);
dp = VTOI(dvp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init) {
error = ENXIO;
goto out;
}
if (fmp->undef_op & UNDEF_REMOVE) {
error = ENOSYS;
goto out;
}
fbuf = fb_setup(cnp->cn_namelen + 1, dp->ufs_ino.i_number,
FBT_UNLINK, p);
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_REMOVE;
fb_delete(fbuf);
goto out;
}
VN_KNOTE(vp, NOTE_DELETE);
VN_KNOTE(dvp, NOTE_WRITE);
fb_delete(fbuf);
out:
if (dvp == vp)
vrele(vp);
else
vput(vp);
vput(dvp);
return (error);
}
int
fusefs_read(void *v)
{
struct vop_read_args *ap = v;
struct vnode *vp = ap->a_vp;
struct uio *uio = ap->a_uio;
struct proc *p = uio->uio_procp;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf = NULL;
size_t size;
int error=0;
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init)
return (ENXIO);
if (uio->uio_resid == 0)
return (error);
if (uio->uio_offset < 0)
return (EINVAL);
while (uio->uio_resid > 0) {
fbuf = fb_setup(0, ip->ufs_ino.i_number, FBT_READ, p);
size = MIN(uio->uio_resid, FUSEBUFMAXSIZE);
fbuf->fb_io_fd = fusefs_fd_get(ip, FUFH_RDONLY);
fbuf->fb_io_off = uio->uio_offset;
fbuf->fb_io_len = size;
error = fb_queue(fmp->dev, fbuf);
if (error)
break;
error = uiomove(fbuf->fb_dat, MIN(size, fbuf->fb_len), uio);
if (error)
break;
if (fbuf->fb_len < size)
break;
fb_delete(fbuf);
fbuf = NULL;
}
fb_delete(fbuf);
return (error);
}
int
fusefs_reclaim(void *v)
{
struct vop_reclaim_args *ap = v;
struct vnode *vp = ap->a_vp;
struct fusefs_node *ip = VTOI(vp);
struct fusefs_filehandle *fufh = NULL;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
int type;
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
/*close opened files*/
for (type = 0; type < FUFH_MAXTYPE; type++) {
fufh = &(ip->fufh[type]);
if (fufh->fh_type != FUFH_INVALID) {
printf("fusefs: vnode being reclaimed is valid\n");
fusefs_file_close(fmp, ip, fufh->fh_type, type,
(ip->vtype == VDIR), curproc);
}
}
/*
* Purge old data structures associated with the inode.
*/
ip->parent = 0;
/*
* if the fuse connection is opened
* ask libfuse to free the vnodes
*/
if (fmp->sess_init) {
fbuf = fb_setup(0, ip->ufs_ino.i_number, FBT_RECLAIM, curproc);
if (fb_queue(fmp->dev, fbuf))
printf("fusefs: libfuse vnode reclaim failed\n");
fb_delete(fbuf);
}
/*
* Remove the inode from its hash chain.
*/
ufs_ihashrem(&ip->ufs_ino);
cache_purge(vp);
free(ip, M_FUSEFS);
vp->v_data = NULL;
return (0);
}
int
fusefs_getattr(void *v)
{
struct vop_getattr_args *ap = v;
struct vnode *vp = ap->a_vp;
struct fusefs_mnt *fmp;
struct vattr *vap = ap->a_vap;
struct proc *p = ap->a_p;
struct fusefs_node *ip;
struct fusebuf *fbuf;
int error = 0;
DPRINTF("fusefs_getattr\n");
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init)
goto fake;
fbuf = fb_setup(0, ip->ufs_ino.i_number, FBT_GETATTR, p);
error = fb_queue(fmp->dev, fbuf);
if (error) {
DPRINTF("getattr error\n");
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}
/* check if we got a response */
if (fbuf->fb_len == 0) {
pool_put(&fusefs_fbuf_pool, fbuf);
goto fake;
}
update_vattr(fmp->mp, &fbuf->fb_vattr);
memcpy(vap, &fbuf->fb_vattr, sizeof(*vap));
memcpy(&ip->cached_attrs, vap, sizeof(*vap));
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
fake:
bzero(vap, sizeof(*vap));
vap->va_type = vp->v_type;
return (0);
}
int
fusefs_readlink(void *v)
{
struct vop_readlink_args *ap = v;
struct vnode *vp = ap->a_vp;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
struct uio *uio;
struct proc *p;
int error = 0;
DPRINTF("fusefs_readlink\n");
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
uio = ap->a_uio;
p = uio->uio_procp;
if (!fmp->sess_init || (fmp->undef_op & UNDEF_READLINK)) {
error = ENOSYS;
goto out;
}
fbuf = fb_setup(0, ip->ufs_ino.i_number, FBT_READLINK, p);
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_READLINK;
pool_put(&fusefs_fbuf_pool, fbuf);
goto out;
}
error = uiomove(fbuf->fb_dat, fbdatsize(fbuf), uio);
pool_put(&fusefs_fbuf_pool, fbuf);
out:
return (error);
}
int
fusefs_readlink(void *v)
{
struct vop_readlink_args *ap = v;
struct vnode *vp = ap->a_vp;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
struct uio *uio;
struct proc *p;
int error = 0;
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
uio = ap->a_uio;
p = uio->uio_procp;
if (!fmp->sess_init)
return (ENXIO);
if (fmp->undef_op & UNDEF_READLINK)
return (ENOSYS);
fbuf = fb_setup(0, ip->ufs_ino.i_number, FBT_READLINK, p);
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_READLINK;
fb_delete(fbuf);
return (error);
}
error = uiomove(fbuf->fb_dat, fbuf->fb_len, uio);
fb_delete(fbuf);
return (error);
}
int
fusefs_file_close(struct fusefs_mnt *fmp, struct fusefs_node * ip,
enum fufh_type fufh_type, int flags, int isdir, struct proc *p)
{
struct fusebuf *fbuf;
int error = 0;
fbuf = fb_setup(FUSEFDSIZE, ip->ufs_ino.i_number,
((isdir) ? FBT_RELEASEDIR : FBT_RELEASE), p);
fbuf->fb_io_fd = ip->fufh[fufh_type].fh_id;
fbuf->fb_io_flags = flags;
error = fb_queue(fmp->dev, fbuf);
if (error)
printf("fuse file error %d\n", error);
ip->fufh[fufh_type].fh_id = (uint64_t)-1;
ip->fufh[fufh_type].fh_type = FUFH_INVALID;
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}
int
fusefs_file_open(struct fusefs_mnt *fmp, struct fusefs_node *ip,
enum fufh_type fufh_type, int flags, int isdir, struct proc *p)
{
struct fusebuf *fbuf;
int error = 0;
fbuf = fb_setup(FUSEFDSIZE, ip->ufs_ino.i_number,
((isdir) ? FBT_OPENDIR : FBT_OPEN), p);
fbuf->fb_io_flags = flags;
error = fb_queue(fmp->dev, fbuf);
if (error) {
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}
ip->fufh[fufh_type].fh_id = fbuf->fb_io_fd;
ip->fufh[fufh_type].fh_type = fufh_type;
pool_put(&fusefs_fbuf_pool, fbuf);
return (0);
}
int
fusefs_rename(void *v)
{
struct vop_rename_args *ap = v;
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;
struct proc *p = fcnp->cn_proc;
struct fusefs_node *ip, *dp;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
int error = 0;
#ifdef DIAGNOSTIC
if ((tcnp->cn_flags & HASBUF) == 0 ||
(fcnp->cn_flags & HASBUF) == 0)
panic("fusefs_rename: no name");
#endif
/*
* Check for cross-device rename.
*/
if ((fvp->v_mount != tdvp->v_mount) ||
(tvp && (fvp->v_mount != tvp->v_mount))) {
error = EXDEV;
abortit:
VOP_ABORTOP(tdvp, tcnp); /* XXX, why not in NFS? */
if (tdvp == tvp)
vrele(tdvp);
else
vput(tdvp);
if (tvp)
vput(tvp);
VOP_ABORTOP(fdvp, fcnp); /* XXX, why not in NFS? */
vrele(fdvp);
vrele(fvp);
return (error);
}
/*
* If source and dest are the same, do nothing.
*/
if (tvp == fvp) {
error = 0;
goto abortit;
}
if ((error = vn_lock(fvp, LK_EXCLUSIVE | LK_RETRY, p)) != 0)
goto abortit;
dp = VTOI(fdvp);
ip = VTOI(fvp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
/*
* Be sure we are not renaming ".", "..", or an alias of ".". This
* leads to a crippled directory tree. It's pretty tough to do a
* "ls" or "pwd" with the "." directory entry missing, and "cd .."
* doesn't work if the ".." entry is missing.
*/
if (ip->vtype == VDIR) {
/*
* Avoid ".", "..", and aliases of "." for obvious reasons.
*/
if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
dp == ip ||
(fcnp->cn_flags & ISDOTDOT) ||
(tcnp->cn_flags & ISDOTDOT)) {
VOP_UNLOCK(fvp, 0);
error = EINVAL;
goto abortit;
}
}
VN_KNOTE(fdvp, NOTE_WRITE); /* XXX right place? */
if (!fmp->sess_init || (fmp->undef_op & UNDEF_RENAME)) {
error = ENOSYS;
VOP_UNLOCK(fvp, 0);
goto abortit;
}
fbuf = fb_setup(fcnp->cn_namelen + tcnp->cn_namelen + 2,
dp->ufs_ino.i_number, FBT_RENAME, p);
memcpy(fbuf->fb_dat, fcnp->cn_nameptr, fcnp->cn_namelen);
fbuf->fb_dat[fcnp->cn_namelen] = '\0';
memcpy(fbuf->fb_dat + fcnp->cn_namelen + 1, tcnp->cn_nameptr,
tcnp->cn_namelen);
fbuf->fb_dat[fcnp->cn_namelen + tcnp->cn_namelen + 1] = '\0';
fbuf->fb_io_ino = VTOI(tdvp)->ufs_ino.i_number;
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS) {
fmp->undef_op |= UNDEF_RENAME;
}
fb_delete(fbuf);
VOP_UNLOCK(fvp, 0);
goto abortit;
}
fb_delete(fbuf);
VN_KNOTE(fvp, NOTE_RENAME);
VOP_UNLOCK(fvp, 0);
if (tdvp == tvp)
vrele(tdvp);
else
vput(tdvp);
vrele(fdvp);
vrele(fvp);
return (error);
}
int
fusefs_mknod(void *v)
{
struct vop_mknod_args *ap = v;
struct componentname *cnp = ap->a_cnp;
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
struct vattr *vap = ap->a_vap;
struct proc *p = cnp->cn_proc;
struct vnode *tdp = NULL;
struct fusefs_mnt *fmp;
struct fusefs_node *ip;
struct fusebuf *fbuf;
int error = 0;
ip = VTOI(dvp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init || (fmp->undef_op & UNDEF_MKNOD)) {
error = ENOSYS;
goto out;
}
fbuf = fb_setup(cnp->cn_namelen + 1, ip->ufs_ino.i_number,
FBT_MKNOD, p);
fbuf->fb_io_mode = MAKEIMODE(vap->va_type, vap->va_mode);
if (vap->va_rdev != VNOVAL)
fbuf->fb_io_rdev = vap->va_rdev;
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_MKNOD;
fb_delete(fbuf);
goto out;
}
if ((error = VFS_VGET(fmp->mp, fbuf->fb_ino, &tdp))) {
fb_delete(fbuf);
goto out;
}
tdp->v_type = IFTOVT(fbuf->fb_io_mode);
VTOI(tdp)->vtype = tdp->v_type;
if (dvp != NULL && dvp->v_type == VDIR)
VTOI(tdp)->parent = ip->ufs_ino.i_number;
*vpp = tdp;
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
fb_delete(fbuf);
vput(ap->a_dvp);
/* Remove inode so that it will be reloaded by VFS_VGET and
* checked to see if it is an alias of an existing entry in
* the inode cache.
*/
vput(*vpp);
(*vpp)->v_type = VNON;
vgone(*vpp);
*vpp = NULL;
return (0);
out:
vput(ap->a_dvp);
return (error);
}
int
fusefs_create(void *v)
{
struct vop_create_args *ap = v;
struct componentname *cnp = ap->a_cnp;
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
struct vattr *vap = ap->a_vap;
struct proc *p = cnp->cn_proc;
struct vnode *tdp = NULL;
struct fusefs_mnt *fmp;
struct fusefs_node *ip;
struct fusebuf *fbuf;
int error = 0;
mode_t mode;
ip = VTOI(dvp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
mode = MAKEIMODE(vap->va_type, vap->va_mode);
if (!fmp->sess_init || (fmp->undef_op & UNDEF_CREATE)) {
error = ENOSYS;
goto out;
}
fbuf = fb_setup(cnp->cn_namelen + 1, ip->ufs_ino.i_number,
FBT_CREATE, p);
fbuf->fb_io_mode = mode;
fbuf->fb_io_flags = O_CREAT | O_RDWR;
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_CREATE;
fb_delete(fbuf);
goto out;
}
if ((error = VFS_VGET(fmp->mp, fbuf->fb_ino, &tdp))) {
fb_delete(fbuf);
goto out;
}
tdp->v_type = IFTOVT(fbuf->fb_io_mode);
VTOI(tdp)->vtype = tdp->v_type;
if (dvp != NULL && dvp->v_type == VDIR)
VTOI(tdp)->parent = ip->ufs_ino.i_number;
*vpp = tdp;
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
fb_delete(fbuf);
out:
vput(ap->a_dvp);
return (error);
}
int
fusefs_link(void *v)
{
struct vop_link_args *ap = v;
struct vnode *dvp = ap->a_dvp;
struct vnode *vp = ap->a_vp;
struct componentname *cnp = ap->a_cnp;
struct proc *p = cnp->cn_proc;
struct fusefs_mnt *fmp;
struct fusefs_node *ip;
struct fusefs_node *dip;
struct fusebuf *fbuf;
int error = 0;
if (vp->v_type == VDIR) {
VOP_ABORTOP(dvp, cnp);
error = EISDIR;
goto out2;
}
if (dvp->v_mount != vp->v_mount) {
VOP_ABORTOP(dvp, cnp);
error = EXDEV;
goto out2;
}
if (dvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE, p))) {
VOP_ABORTOP(dvp, cnp);
goto out2;
}
ip = VTOI(vp);
dip = VTOI(dvp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init || (fmp->undef_op & UNDEF_LINK))
goto out1;
fbuf = fb_setup(cnp->cn_namelen + 1, dip->ufs_ino.i_number,
FBT_LINK, p);
fbuf->fb_io_ino = ip->ufs_ino.i_number;
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_LINK;
fb_delete(fbuf);
goto out1;
}
fb_delete(fbuf);
VN_KNOTE(vp, NOTE_LINK);
VN_KNOTE(dvp, NOTE_WRITE);
out1:
if (dvp != vp)
VOP_UNLOCK(vp, 0);
out2:
vput(dvp);
return (error);
}
int
fusefs_setattr(void *v)
{
struct vop_setattr_args *ap = v;
struct vattr *vap = ap->a_vap;
struct vnode *vp = ap->a_vp;
struct fusefs_node *ip = VTOI(vp);
struct proc *p = curproc;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
struct fb_io *io;
int error = 0;
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
/*
* Check for unsettable attributes.
*/
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) ||
((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL))
return (EINVAL);
if (!fmp->sess_init || (fmp->undef_op & UNDEF_SETATTR))
return (ENXIO);
fbuf = fb_setup(sizeof(*io), ip->ufs_ino.i_number, FBT_SETATTR, p);
io = fbtod(fbuf, struct fb_io *);
io->fi_flags = 0;
if (vap->va_uid != (uid_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
fbuf->fb_vattr.va_uid = vap->va_uid;
io->fi_flags |= FUSE_FATTR_UID;
}
if (vap->va_gid != (gid_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
fbuf->fb_vattr.va_gid = vap->va_gid;
io->fi_flags |= FUSE_FATTR_GID;
}
if (vap->va_size != VNOVAL) {
switch (vp->v_type) {
case VDIR:
error = EISDIR;
goto out;
case VLNK:
case VREG:
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
break;
default:
break;
}
fbuf->fb_vattr.va_size = vap->va_size;
io->fi_flags |= FUSE_FATTR_SIZE;
}
if (vap->va_atime.tv_sec != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
fbuf->fb_vattr.va_atime.tv_sec = vap->va_atime.tv_sec;
fbuf->fb_vattr.va_atime.tv_nsec = vap->va_atime.tv_nsec;
io->fi_flags |= FUSE_FATTR_ATIME;
}
if (vap->va_mtime.tv_sec != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
fbuf->fb_vattr.va_mtime.tv_sec = vap->va_mtime.tv_sec;
fbuf->fb_vattr.va_mtime.tv_nsec = vap->va_mtime.tv_nsec;
io->fi_flags |= FUSE_FATTR_MTIME;
}
if (vap->va_mode != (mode_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
error = EROFS;
goto out;
}
fbuf->fb_vattr.va_mode = vap->va_mode & ALLPERMS;
io->fi_flags |= FUSE_FATTR_MODE;
}
if (!io->fi_flags) {
goto out;
}
if (io->fi_flags & FUSE_FATTR_SIZE && vp->v_type == VDIR) {
error = EISDIR;
goto out;
}
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_SETATTR;
goto out;
}
update_vattr(fmp->mp, &fbuf->fb_vattr);
memcpy(vap, &fbuf->fb_vattr, sizeof(*vap));
VN_KNOTE(ap->a_vp, NOTE_ATTRIB);
out:
fb_delete(fbuf);
return (error);
}
int
fusefs_access(void *v)
{
struct vop_access_args *ap;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
struct ucred *cred;
struct vattr vattr;
struct proc *p;
uint32_t mask = 0;
int error = 0;
ap = v;
p = curproc;
cred = p->p_ucred;
ip = VTOI(ap->a_vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init || (fmp->undef_op & UNDEF_ACCESS))
goto system_check;
if (ap->a_vp->v_type == VLNK)
goto system_check;
if (ap->a_vp->v_type == VREG && (ap->a_mode & VWRITE & VEXEC))
goto system_check;
if ((ap->a_mode & VWRITE) && (fmp->mp->mnt_flag & MNT_RDONLY))
return (EACCES);
if ((ap->a_mode & VWRITE) != 0)
mask |= 0x2;
if ((ap->a_mode & VREAD) != 0)
mask |= 0x4;
if ((ap->a_mode & VEXEC) != 0)
mask |= 0x1;
fbuf = fb_setup(0, ip->ufs_ino.i_number, FBT_ACCESS, p);
fbuf->fb_io_mode = mask;
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS) {
fmp->undef_op |= UNDEF_ACCESS;
fb_delete(fbuf);
goto system_check;
}
printf("fusefs: access error %i\n", error);
fb_delete(fbuf);
return (error);
}
fb_delete(fbuf);
return (error);
system_check:
if ((error = VOP_GETATTR(ap->a_vp, &vattr, cred)) != 0)
return (error);
return (vaccess(ap->a_vp->v_type, vattr.va_mode & ALLPERMS,
vattr.va_uid, vattr.va_gid, ap->a_mode,
ap->a_cred));
}
int
fusefs_rmdir(void *v)
{
struct vop_rmdir_args *ap = v;
struct vnode *vp = ap->a_vp;
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
struct proc *p = cnp->cn_proc;
struct fusefs_node *ip, *dp;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
int error;
ip = VTOI(vp);
dp = VTOI(dvp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
/*
* No rmdir "." please.
*/
if (dp == ip) {
vrele(dvp);
vput(vp);
return (EINVAL);
}
if (!fmp->sess_init || (fmp->undef_op & UNDEF_RMDIR)) {
error = ENOSYS;
goto out;
}
VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
fbuf = fb_setup(cnp->cn_namelen + 1, dp->ufs_ino.i_number,
FBT_RMDIR, p);
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS)
fmp->undef_op |= UNDEF_RMDIR;
if (error != ENOTEMPTY)
VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
fb_delete(fbuf);
goto out;
}
cache_purge(dvp);
vput(dvp);
dvp = NULL;
cache_purge(ITOV(ip));
fb_delete(fbuf);
out:
if (dvp)
vput(dvp);
VN_KNOTE(vp, NOTE_DELETE);
vput(vp);
return (error);
}
int
fusefs_access(void *v)
{
struct vop_access_args *ap;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf;
struct proc *p;
uint32_t mask = 0;
int error = 0;
DPRINTF("fusefs_access\n");
ap = v;
p = ap->a_p;
ip = VTOI(ap->a_vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init || (fmp->undef_op & UNDEF_ACCESS))
goto system_check;
if (ap->a_vp->v_type == VLNK)
goto system_check;
if (ap->a_vp->v_type == VREG && (ap->a_mode & VWRITE & VEXEC))
goto system_check;
if ((ap->a_mode & VWRITE) && (fmp->mp->mnt_flag & MNT_RDONLY))
return (EACCES);
if ((ap->a_mode & VWRITE) != 0)
mask |= 0x2;
if ((ap->a_mode & VREAD) != 0)
mask |= 0x4;
if ((ap->a_mode & VEXEC) != 0)
mask |= 0x1;
fbuf = fb_setup(FUSEFDSIZE, ip->ufs_ino.i_number, FBT_ACCESS, p);
fbuf->fb_io_mode = mask;
error = fb_queue(fmp->dev, fbuf);
if (error) {
if (error == ENOSYS) {
fmp->undef_op |= UNDEF_ACCESS;
pool_put(&fusefs_fbuf_pool, fbuf);
goto system_check;
}
DPRINTF("access error %i\n", error);
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
system_check:
return (vaccess(ap->a_vp->v_type, ip->cached_attrs.va_mode & ALLPERMS,
ip->cached_attrs.va_uid, ip->cached_attrs.va_gid, ap->a_mode,
ap->a_cred));
}
int
fusefs_write(void *v)
{
struct vop_write_args *ap = v;
struct vnode *vp = ap->a_vp;
struct uio *uio = ap->a_uio;
struct proc *p = uio->uio_procp;
struct ucred *cred = p->p_ucred;
struct vattr vattr;
int ioflag = ap->a_ioflag;
struct fusefs_node *ip;
struct fusefs_mnt *fmp;
struct fusebuf *fbuf = NULL;
size_t len, diff;
int error=0;
ip = VTOI(vp);
fmp = (struct fusefs_mnt *)ip->ufs_ino.i_ump;
if (!fmp->sess_init)
return (ENXIO);
if (uio->uio_resid == 0)
return (error);
if (ioflag & IO_APPEND) {
if ((error = VOP_GETATTR(vp, &vattr, cred)) != 0)
return (error);
uio->uio_offset = vattr.va_size;
}
while (uio->uio_resid > 0) {
len = MIN(uio->uio_resid, FUSEBUFMAXSIZE);
fbuf = fb_setup(len, ip->ufs_ino.i_number, FBT_WRITE, p);
fbuf->fb_io_fd = fusefs_fd_get(ip, FUFH_WRONLY);
fbuf->fb_io_off = uio->uio_offset;
fbuf->fb_io_len = len;
if ((error = uiomove(fbuf->fb_dat, len, uio))) {
printf("fusefs: uio error %i\n", error);
break;
}
error = fb_queue(fmp->dev, fbuf);
if (error)
break;
if (fbuf->fb_io_len > len) {
error = EINVAL;
break;
}
diff = len - fbuf->fb_io_len;
uio->uio_resid += diff;
uio->uio_offset -= diff;
fb_delete(fbuf);
fbuf = NULL;
}
fb_delete(fbuf);
return (error);
}
int
fusefs_lookup(void *v)
{
struct vop_lookup_args *ap = v;
struct vnode *vdp; /* vnode for directory being searched */
struct fusefs_node *dp; /* inode for directory being searched */
struct fusefs_mnt *fmp; /* file system that directory is in */
int lockparent; /* 1 => lockparent flag is set */
struct vnode *tdp; /* returned by VOP_VGET */
struct fusebuf *fbuf = NULL;
struct vnode **vpp = ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
struct proc *p = cnp->cn_proc;
struct ucred *cred = cnp->cn_cred;
int flags;
int nameiop = cnp->cn_nameiop;
int wantparent;
int error = 0;
uint64_t nid;
flags = cnp->cn_flags;
*vpp = NULL;
vdp = ap->a_dvp;
dp = VTOI(vdp);
fmp = (struct fusefs_mnt *)dp->ufs_ino.i_ump;
lockparent = flags & LOCKPARENT;
wantparent = flags & (LOCKPARENT | WANTPARENT);
DPRINTF("lookup path %s\n", cnp->cn_pnbuf);
DPRINTF("lookup file %s\n", cnp->cn_nameptr);
if ((error = VOP_ACCESS(vdp, VEXEC, cred, cnp->cn_proc)) != 0)
return (error);
if ((flags & ISLASTCN) && (vdp->v_mount->mnt_flag & MNT_RDONLY) &&
(cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
return (EROFS);
if ((error = cache_lookup(vdp, vpp, cnp)) >= 0)
return (error);
if (flags & ISDOTDOT) {
/* got ".." */
nid = dp->parent;
if (nid == 0)
return (ENOENT);
} else if (cnp->cn_namelen == 1 && *(cnp->cn_nameptr) == '.') {
nid = dp->ufs_ino.i_number;
} else {
/* got a real entry */
fbuf = fb_setup(FUSEFDSIZE + cnp->cn_namelen + 1,
dp->ufs_ino.i_number, FBT_LOOKUP, p);
memcpy(fbuf->fb_dat, cnp->cn_nameptr, cnp->cn_namelen);
fbuf->fb_dat[cnp->cn_namelen] = '\0';
error = fb_queue(fmp->dev, fbuf);
/* tsleep return */
if (error == EWOULDBLOCK)
goto out;
if (error) {
if ((nameiop == CREATE || nameiop == RENAME) &&
(flags & ISLASTCN)) {
if (vdp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
cnp->cn_flags |= SAVENAME;
if (!lockparent) {
VOP_UNLOCK(vdp, 0, p);
cnp->cn_flags |= PDIRUNLOCK;
}
error = EJUSTRETURN;
goto out;
}
error = ENOENT;
goto out;
}
nid = fbuf->fb_vattr.va_fileid;
}
if (nameiop == DELETE && (flags & ISLASTCN)) {
/*
* Write access to directory required to delete files.
*/
error = VOP_ACCESS(vdp, VWRITE, cred, cnp->cn_proc);
if (error != 0) {
if (fbuf)
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}
cnp->cn_flags |= SAVENAME;
}
if (nameiop == RENAME && wantparent && (flags & ISLASTCN)) {
/*
* Write access to directory required to delete files.
*/
if ((error = VOP_ACCESS(vdp, VWRITE, cred, cnp->cn_proc)) != 0)
return (error);
if (nid == VTOI(vdp)->ufs_ino.i_number) {
error = EISDIR;
goto out;
}
error = VFS_VGET(fmp->mp, nid, &tdp);
if (error)
goto out;
tdp->v_type = IFTOVT(fbuf->fb_vattr.va_mode);
VTOI(tdp)->vtype = tdp->v_type;
*vpp = tdp;
cnp->cn_flags |= SAVENAME;
goto out;
}
if (flags & ISDOTDOT) {
VOP_UNLOCK(vdp, 0, p); /* race to get the inode */
cnp->cn_flags |= PDIRUNLOCK;
error = VFS_VGET(fmp->mp, nid, &tdp);
if (error) {
if (vn_lock(vdp, LK_EXCLUSIVE | LK_RETRY, p) == 0)
cnp->cn_flags &= ~PDIRUNLOCK;
return (error);
}
if (lockparent && (flags & ISLASTCN)) {
if ((error = vn_lock(vdp, LK_EXCLUSIVE, p))) {
vput(tdp);
return (error);
}
cnp->cn_flags &= ~PDIRUNLOCK;
}
*vpp = tdp;
} else if (nid == dp->ufs_ino.i_number) {
vref(vdp);
*vpp = vdp;
error = 0;
} else {
error = VFS_VGET(fmp->mp, nid, &tdp);
if (!error) {
tdp->v_type = IFTOVT(fbuf->fb_vattr.va_mode);
VTOI(tdp)->vtype = tdp->v_type;
}
update_vattr(fmp->mp, &fbuf->fb_vattr);
memcpy(&(VTOI(tdp)->cached_attrs), &fbuf->fb_vattr,
sizeof(struct vattr));
if (error) {
if (fbuf)
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}
if (vdp != NULL && vdp->v_type == VDIR)
VTOI(tdp)->parent = dp->ufs_ino.i_number;
if (!lockparent || !(flags & ISLASTCN)) {
VOP_UNLOCK(vdp, 0, p);
cnp->cn_flags |= PDIRUNLOCK;
}
*vpp = tdp;
}
out:
if ((cnp->cn_flags & MAKEENTRY) && nameiop != CREATE &&
nameiop != DELETE)
cache_enter(vdp, *vpp, cnp);
if (fbuf)
pool_put(&fusefs_fbuf_pool, fbuf);
return (error);
}