Index: projects/fuse2/sys/fs/fuse/fuse_internal.c =================================================================== --- projects/fuse2/sys/fs/fuse/fuse_internal.c (revision 349243) +++ projects/fuse2/sys/fs/fuse/fuse_internal.c (revision 349244) @@ -1,1098 +1,1102 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 2007-2009 Google Inc. and Amit Singh * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 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. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "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 COPYRIGHT * OWNER OR CONTRIBUTORS 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. * * Copyright (C) 2005 Csaba Henk. * 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fuse.h" #include "fuse_file.h" #include "fuse_internal.h" #include "fuse_io.h" #include "fuse_ipc.h" #include "fuse_node.h" #include "fuse_file.h" SDT_PROVIDER_DECLARE(fusefs); /* * Fuse trace probe: * arg0: verbosity. Higher numbers give more verbose messages * arg1: Textual message */ SDT_PROBE_DEFINE2(fusefs, , internal, trace, "int", "char*"); #ifdef ZERO_PAD_INCOMPLETE_BUFS static int isbzero(void *buf, size_t len); #endif int fuse_internal_get_cached_vnode(struct mount* mp, ino_t ino, int flags, struct vnode **vpp) { struct bintime now; struct thread *td = curthread; uint64_t nodeid = ino; int error; *vpp = NULL; error = vfs_hash_get(mp, fuse_vnode_hash(nodeid), flags, td, vpp, fuse_vnode_cmp, &nodeid); if (error) return error; /* * Check the entry cache timeout. We have to do this within fusefs * instead of by using cache_enter_time/cache_lookup because those * routines are only intended to work with pathnames, not inodes */ if (*vpp != NULL) { getbinuptime(&now); if (bintime_cmp(&(VTOFUD(*vpp)->entry_cache_timeout), &now, >)){ atomic_add_acq_long(&fuse_lookup_cache_hits, 1); return 0; } else { /* Entry cache timeout */ atomic_add_acq_long(&fuse_lookup_cache_misses, 1); cache_purge(*vpp); vput(*vpp); *vpp = NULL; } } return 0; } /* Synchronously send a FUSE_ACCESS operation */ int fuse_internal_access(struct vnode *vp, accmode_t mode, struct thread *td, struct ucred *cred) { int err = 0; uint32_t mask = F_OK; int dataflags; int vtype; struct mount *mp; struct fuse_dispatcher fdi; struct fuse_access_in *fai; struct fuse_data *data; mp = vnode_mount(vp); vtype = vnode_vtype(vp); data = fuse_get_mpdata(mp); dataflags = data->dataflags; if (mode == 0) return 0; if (mode & VMODIFY_PERMS && vfs_isrdonly(mp)) { switch (vp->v_type) { case VDIR: /* FALLTHROUGH */ case VLNK: /* FALLTHROUGH */ case VREG: return EROFS; default: break; } } /* Unless explicitly permitted, deny everyone except the fs owner. */ if (!(dataflags & FSESS_DAEMON_CAN_SPY)) { if (fuse_match_cred(data->daemoncred, cred)) return EPERM; } if (dataflags & FSESS_DEFAULT_PERMISSIONS) { struct vattr va; fuse_internal_getattr(vp, &va, cred, td); return vaccess(vp->v_type, va.va_mode, va.va_uid, va.va_gid, mode, cred, NULL); } if (!fsess_isimpl(mp, FUSE_ACCESS)) return 0; if ((mode & (VWRITE | VAPPEND | VADMIN)) != 0) mask |= W_OK; if ((mode & VREAD) != 0) mask |= R_OK; if ((mode & VEXEC) != 0) mask |= X_OK; fdisp_init(&fdi, sizeof(*fai)); fdisp_make_vp(&fdi, FUSE_ACCESS, vp, td, cred); fai = fdi.indata; fai->mask = mask; err = fdisp_wait_answ(&fdi); fdisp_destroy(&fdi); if (err == ENOSYS) { fsess_set_notimpl(mp, FUSE_ACCESS); err = 0; } return err; } /* * Cache FUSE attributes from attr, in attribute cache associated with vnode * 'vp'. Optionally, if argument 'vap' is not NULL, store a copy of the * converted attributes there as well. * * If the nominal attribute cache TTL is zero, do not cache on the 'vp' (but do * return the result to the caller). */ void fuse_internal_cache_attrs(struct vnode *vp, struct fuse_attr *attr, uint64_t attr_valid, uint32_t attr_valid_nsec, struct vattr *vap) { struct mount *mp; struct fuse_vnode_data *fvdat; struct fuse_data *data; struct vattr *vp_cache_at; mp = vnode_mount(vp); fvdat = VTOFUD(vp); data = fuse_get_mpdata(mp); ASSERT_VOP_ELOCKED(vp, "fuse_internal_cache_attrs"); fuse_validity_2_bintime(attr_valid, attr_valid_nsec, &fvdat->attr_cache_timeout); /* Fix our buffers if the filesize changed without us knowing */ if (vnode_isreg(vp) && attr->size != fvdat->cached_attrs.va_size) { (void)fuse_vnode_setsize(vp, attr->size); fvdat->cached_attrs.va_size = attr->size; } if (attr_valid > 0 || attr_valid_nsec > 0) vp_cache_at = &(fvdat->cached_attrs); else if (vap != NULL) vp_cache_at = vap; else return; vattr_null(vp_cache_at); vp_cache_at->va_fsid = mp->mnt_stat.f_fsid.val[0]; vp_cache_at->va_fileid = attr->ino; vp_cache_at->va_mode = attr->mode & ~S_IFMT; vp_cache_at->va_nlink = attr->nlink; vp_cache_at->va_uid = attr->uid; vp_cache_at->va_gid = attr->gid; vp_cache_at->va_rdev = attr->rdev; vp_cache_at->va_size = attr->size; /* XXX on i386, seconds are truncated to 32 bits */ vp_cache_at->va_atime.tv_sec = attr->atime; vp_cache_at->va_atime.tv_nsec = attr->atimensec; vp_cache_at->va_mtime.tv_sec = attr->mtime; vp_cache_at->va_mtime.tv_nsec = attr->mtimensec; vp_cache_at->va_ctime.tv_sec = attr->ctime; vp_cache_at->va_ctime.tv_nsec = attr->ctimensec; if (fuse_libabi_geq(data, 7, 9) && attr->blksize > 0) vp_cache_at->va_blocksize = attr->blksize; else vp_cache_at->va_blocksize = PAGE_SIZE; vp_cache_at->va_type = IFTOVT(attr->mode); vp_cache_at->va_bytes = attr->blocks * S_BLKSIZE; vp_cache_at->va_flags = 0; if (vap != vp_cache_at && vap != NULL) memcpy(vap, vp_cache_at, sizeof(*vap)); } /* fsync */ int fuse_internal_fsync_callback(struct fuse_ticket *tick, struct uio *uio) { if (tick->tk_aw_ohead.error == ENOSYS) { fsess_set_notimpl(tick->tk_data->mp, fticket_opcode(tick)); } return 0; } int fuse_internal_fsync(struct vnode *vp, struct thread *td, int waitfor, bool datasync) { struct fuse_fsync_in *ffsi = NULL; struct fuse_dispatcher fdi; struct fuse_filehandle *fufh; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct mount *mp = vnode_mount(vp); int op = FUSE_FSYNC; int err = 0; if (!fsess_isimpl(vnode_mount(vp), (vnode_vtype(vp) == VDIR ? FUSE_FSYNCDIR : FUSE_FSYNC))) { return 0; } if (vnode_isdir(vp)) op = FUSE_FSYNCDIR; if (!fsess_isimpl(mp, op)) return 0; fdisp_init(&fdi, sizeof(*ffsi)); /* * fsync every open file handle for this file, because we can't be sure * which file handle the caller is really referring to. */ LIST_FOREACH(fufh, &fvdat->handles, next) { if (ffsi == NULL) fdisp_make_vp(&fdi, op, vp, td, NULL); else fdisp_refresh_vp(&fdi, op, vp, td, NULL); ffsi = fdi.indata; ffsi->fh = fufh->fh_id; ffsi->fsync_flags = 0; if (datasync) ffsi->fsync_flags = 1; if (waitfor == MNT_WAIT) { err = fdisp_wait_answ(&fdi); } else { fuse_insert_callback(fdi.tick, fuse_internal_fsync_callback); fuse_insert_message(fdi.tick, false); } if (err == ENOSYS) { /* ENOSYS means "success, and don't call again" */ fsess_set_notimpl(mp, op); err = 0; break; } } fdisp_destroy(&fdi); return err; } /* Asynchronous invalidation */ SDT_PROBE_DEFINE2(fusefs, , internal, invalidate_cache_hit, "struct vnode*", "struct vnode*"); int fuse_internal_invalidate_entry(struct mount *mp, struct uio *uio) { struct fuse_notify_inval_entry_out fnieo; struct componentname cn; struct vnode *dvp, *vp; char name[PATH_MAX]; int err; if ((err = uiomove(&fnieo, sizeof(fnieo), uio)) != 0) return (err); if ((err = uiomove(name, fnieo.namelen, uio)) != 0) return (err); name[fnieo.namelen] = '\0'; /* fusefs does not cache "." or ".." entries */ if (strncmp(name, ".", sizeof(".")) == 0 || strncmp(name, "..", sizeof("..")) == 0) return (0); if (fnieo.parent == FUSE_ROOT_ID) err = VFS_ROOT(mp, LK_SHARED, &dvp); else err = fuse_internal_get_cached_vnode( mp, fnieo.parent, LK_SHARED, &dvp); /* * If dvp is not in the cache, then it must've been reclaimed. And * since fuse_vnop_reclaim does a cache_purge, name's entry must've * been invalidated already. So we can safely return if dvp == NULL */ if (err != 0 || dvp == NULL) return (err); /* * XXX we can't check dvp's generation because the FUSE invalidate * entry message doesn't include it. Worse case is that we invalidate * an entry that didn't need to be invalidated. */ cn.cn_nameiop = LOOKUP; cn.cn_flags = 0; /* !MAKEENTRY means free cached entry */ cn.cn_thread = curthread; cn.cn_cred = curthread->td_ucred; cn.cn_lkflags = LK_SHARED; cn.cn_pnbuf = NULL; cn.cn_nameptr = name; cn.cn_namelen = fnieo.namelen; err = cache_lookup(dvp, &vp, &cn, NULL, NULL); MPASS(err == 0); fuse_vnode_clear_attr_cache(dvp); vput(dvp); return (0); } int fuse_internal_invalidate_inode(struct mount *mp, struct uio *uio) { struct fuse_notify_inval_inode_out fniio; struct vnode *vp; int err; if ((err = uiomove(&fniio, sizeof(fniio), uio)) != 0) return (err); if (fniio.ino == FUSE_ROOT_ID) err = VFS_ROOT(mp, LK_EXCLUSIVE, &vp); else err = fuse_internal_get_cached_vnode(mp, fniio.ino, LK_SHARED, &vp); if (err != 0 || vp == NULL) return (err); /* * XXX we can't check vp's generation because the FUSE invalidate * entry message doesn't include it. Worse case is that we invalidate * an inode that didn't need to be invalidated. */ /* * Flush and invalidate buffers if off >= 0. Technically we only need * to flush and invalidate the range of offsets [off, off + len), but * for simplicity's sake we do everything. */ if (fniio.off >= 0) fuse_io_invalbuf(vp, curthread); fuse_vnode_clear_attr_cache(vp); vput(vp); return (0); } /* mknod */ int fuse_internal_mknod(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp, struct vattr *vap) { struct fuse_data *data; struct fuse_mknod_in fmni; size_t insize; data = fuse_get_mpdata(dvp->v_mount); fmni.mode = MAKEIMODE(vap->va_type, vap->va_mode); fmni.rdev = vap->va_rdev; if (fuse_libabi_geq(data, 7, 12)) { insize = sizeof(fmni); fmni.umask = curthread->td_proc->p_fd->fd_cmask; } else { insize = FUSE_COMPAT_MKNOD_IN_SIZE; } return (fuse_internal_newentry(dvp, vpp, cnp, FUSE_MKNOD, &fmni, insize, vap->va_type)); } /* readdir */ int fuse_internal_readdir(struct vnode *vp, struct uio *uio, off_t startoff, struct fuse_filehandle *fufh, struct fuse_iov *cookediov, int *ncookies, u_long *cookies) { int err = 0; struct fuse_dispatcher fdi; struct fuse_read_in *fri = NULL; int fnd_start; if (uio_resid(uio) == 0) return 0; fdisp_init(&fdi, 0); /* * Note that we DO NOT have a UIO_SYSSPACE here (so no need for p2p * I/O). */ /* * fnd_start is set non-zero once the offset in the directory gets * to the startoff. This is done because directories must be read * from the beginning (offset == 0) when fuse_vnop_readdir() needs * to do an open of the directory. * If it is not set non-zero here, it will be set non-zero in * fuse_internal_readdir_processdata() when uio_offset == startoff. */ fnd_start = 0; if (uio->uio_offset == startoff) fnd_start = 1; while (uio_resid(uio) > 0) { fdi.iosize = sizeof(*fri); if (fri == NULL) fdisp_make_vp(&fdi, FUSE_READDIR, vp, NULL, NULL); else fdisp_refresh_vp(&fdi, FUSE_READDIR, vp, NULL, NULL); fri = fdi.indata; fri->fh = fufh->fh_id; fri->offset = uio_offset(uio); fri->size = MIN(uio->uio_resid, fuse_get_mpdata(vp->v_mount)->max_read); if ((err = fdisp_wait_answ(&fdi))) break; if ((err = fuse_internal_readdir_processdata(uio, startoff, &fnd_start, fri->size, fdi.answ, fdi.iosize, cookediov, ncookies, &cookies))) break; } fdisp_destroy(&fdi); return ((err == -1) ? 0 : err); } /* * Return -1 to indicate that this readdir is finished, 0 if it copied * all the directory data read in and it may be possible to read more * and greater than 0 for a failure. */ int fuse_internal_readdir_processdata(struct uio *uio, off_t startoff, int *fnd_start, size_t reqsize, void *buf, size_t bufsize, struct fuse_iov *cookediov, int *ncookies, u_long **cookiesp) { int err = 0; int bytesavail; size_t freclen; struct dirent *de; struct fuse_dirent *fudge; u_long *cookies; cookies = *cookiesp; if (bufsize < FUSE_NAME_OFFSET) return -1; for (;;) { if (bufsize < FUSE_NAME_OFFSET) { err = -1; break; } fudge = (struct fuse_dirent *)buf; freclen = FUSE_DIRENT_SIZE(fudge); if (bufsize < freclen) { /* * This indicates a partial directory entry at the * end of the directory data. */ err = -1; break; } #ifdef ZERO_PAD_INCOMPLETE_BUFS if (isbzero(buf, FUSE_NAME_OFFSET)) { err = -1; break; } #endif if (!fudge->namelen || fudge->namelen > MAXNAMLEN) { err = EINVAL; break; } bytesavail = GENERIC_DIRSIZ((struct pseudo_dirent *) &fudge->namelen); if (bytesavail > uio_resid(uio)) { /* Out of space for the dir so we are done. */ err = -1; break; } /* * Don't start to copy the directory entries out until * the requested offset in the directory is found. */ if (*fnd_start != 0) { fiov_adjust(cookediov, bytesavail); bzero(cookediov->base, bytesavail); de = (struct dirent *)cookediov->base; de->d_fileno = fudge->ino; de->d_reclen = bytesavail; de->d_type = fudge->type; de->d_namlen = fudge->namelen; memcpy((char *)cookediov->base + sizeof(struct dirent) - MAXNAMLEN - 1, (char *)buf + FUSE_NAME_OFFSET, fudge->namelen); dirent_terminate(de); err = uiomove(cookediov->base, cookediov->len, uio); if (err) break; if (cookies != NULL) { if (*ncookies == 0) { err = -1; break; } *cookies = fudge->off; cookies++; (*ncookies)--; } } else if (startoff == fudge->off) *fnd_start = 1; buf = (char *)buf + freclen; bufsize -= freclen; uio_setoffset(uio, fudge->off); } *cookiesp = cookies; return err; } /* remove */ int fuse_internal_remove(struct vnode *dvp, struct vnode *vp, struct componentname *cnp, enum fuse_opcode op) { struct fuse_dispatcher fdi; int err = 0; fdisp_init(&fdi, cnp->cn_namelen + 1); fdisp_make_vp(&fdi, op, dvp, cnp->cn_thread, cnp->cn_cred); memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen); ((char *)fdi.indata)[cnp->cn_namelen] = '\0'; err = fdisp_wait_answ(&fdi); fdisp_destroy(&fdi); return err; } /* rename */ int fuse_internal_rename(struct vnode *fdvp, struct componentname *fcnp, struct vnode *tdvp, struct componentname *tcnp) { struct fuse_dispatcher fdi; struct fuse_rename_in *fri; int err = 0; fdisp_init(&fdi, sizeof(*fri) + fcnp->cn_namelen + tcnp->cn_namelen + 2); fdisp_make_vp(&fdi, FUSE_RENAME, fdvp, tcnp->cn_thread, tcnp->cn_cred); fri = fdi.indata; fri->newdir = VTOI(tdvp); memcpy((char *)fdi.indata + sizeof(*fri), fcnp->cn_nameptr, fcnp->cn_namelen); ((char *)fdi.indata)[sizeof(*fri) + fcnp->cn_namelen] = '\0'; memcpy((char *)fdi.indata + sizeof(*fri) + fcnp->cn_namelen + 1, tcnp->cn_nameptr, tcnp->cn_namelen); ((char *)fdi.indata)[sizeof(*fri) + fcnp->cn_namelen + tcnp->cn_namelen + 1] = '\0'; err = fdisp_wait_answ(&fdi); fdisp_destroy(&fdi); return err; } /* strategy */ /* entity creation */ void fuse_internal_newentry_makerequest(struct mount *mp, uint64_t dnid, struct componentname *cnp, enum fuse_opcode op, void *buf, size_t bufsize, struct fuse_dispatcher *fdip) { fdip->iosize = bufsize + cnp->cn_namelen + 1; fdisp_make(fdip, op, mp, dnid, cnp->cn_thread, cnp->cn_cred); memcpy(fdip->indata, buf, bufsize); memcpy((char *)fdip->indata + bufsize, cnp->cn_nameptr, cnp->cn_namelen); ((char *)fdip->indata)[bufsize + cnp->cn_namelen] = '\0'; } int fuse_internal_newentry_core(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp, enum vtype vtyp, struct fuse_dispatcher *fdip) { int err = 0; struct fuse_entry_out *feo; struct mount *mp = vnode_mount(dvp); if ((err = fdisp_wait_answ(fdip))) { return err; } feo = fdip->answ; if ((err = fuse_internal_checkentry(feo, vtyp))) { return err; } err = fuse_vnode_get(mp, feo, feo->nodeid, dvp, vpp, cnp, vtyp); if (err) { fuse_internal_forget_send(mp, cnp->cn_thread, cnp->cn_cred, feo->nodeid, 1); return err; } /* * Purge the parent's attribute cache because the daemon should've * updated its mtime and ctime */ fuse_vnode_clear_attr_cache(dvp); fuse_internal_cache_attrs(*vpp, &feo->attr, feo->attr_valid, feo->attr_valid_nsec, NULL); return err; } int fuse_internal_newentry(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp, enum fuse_opcode op, void *buf, size_t bufsize, enum vtype vtype) { int err; struct fuse_dispatcher fdi; struct mount *mp = vnode_mount(dvp); fdisp_init(&fdi, 0); fuse_internal_newentry_makerequest(mp, VTOI(dvp), cnp, op, buf, bufsize, &fdi); err = fuse_internal_newentry_core(dvp, vpp, cnp, vtype, &fdi); fdisp_destroy(&fdi); return err; } /* entity destruction */ int fuse_internal_forget_callback(struct fuse_ticket *ftick, struct uio *uio) { fuse_internal_forget_send(ftick->tk_data->mp, curthread, NULL, ((struct fuse_in_header *)ftick->tk_ms_fiov.base)->nodeid, 1); return 0; } void fuse_internal_forget_send(struct mount *mp, struct thread *td, struct ucred *cred, uint64_t nodeid, uint64_t nlookup) { struct fuse_dispatcher fdi; struct fuse_forget_in *ffi; /* * KASSERT(nlookup > 0, ("zero-times forget for vp #%llu", * (long long unsigned) nodeid)); */ fdisp_init(&fdi, sizeof(*ffi)); fdisp_make(&fdi, FUSE_FORGET, mp, nodeid, td, cred); ffi = fdi.indata; ffi->nlookup = nlookup; fuse_insert_message(fdi.tick, false); fdisp_destroy(&fdi); } /* Fetch the vnode's attributes from the daemon*/ int fuse_internal_do_getattr(struct vnode *vp, struct vattr *vap, struct ucred *cred, struct thread *td) { struct fuse_dispatcher fdi; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_getattr_in *fgai; struct fuse_attr_out *fao; off_t old_filesize = fvdat->cached_attrs.va_size; enum vtype vtyp; int err; fdisp_init(&fdi, 0); fdisp_make_vp(&fdi, FUSE_GETATTR, vp, td, cred); fgai = fdi.indata; /* * We could look up a file handle and set it in fgai->fh, but that * involves extra runtime work and I'm unaware of any file systems that * care. */ fgai->getattr_flags = 0; if ((err = fdisp_simple_putget_vp(&fdi, FUSE_GETATTR, vp, td, cred))) { if (err == ENOENT) fuse_internal_vnode_disappear(vp); goto out; } fao = (struct fuse_attr_out *)fdi.answ; vtyp = IFTOVT(fao->attr.mode); if (fvdat->flag & FN_SIZECHANGE) fao->attr.size = old_filesize; fuse_internal_cache_attrs(vp, &fao->attr, fao->attr_valid, fao->attr_valid_nsec, vap); if (vtyp != vnode_vtype(vp)) { fuse_internal_vnode_disappear(vp); err = ENOENT; } out: fdisp_destroy(&fdi); return err; } /* Read a vnode's attributes from cache or fetch them from the fuse daemon */ int fuse_internal_getattr(struct vnode *vp, struct vattr *vap, struct ucred *cred, struct thread *td) { struct vattr *attrs; if ((attrs = VTOVA(vp)) != NULL) { *vap = *attrs; /* struct copy */ return 0; } return fuse_internal_do_getattr(vp, vap, cred, td); } void fuse_internal_vnode_disappear(struct vnode *vp) { struct fuse_vnode_data *fvdat = VTOFUD(vp); ASSERT_VOP_ELOCKED(vp, "fuse_internal_vnode_disappear"); fvdat->flag |= FN_REVOKED; bintime_clear(&fvdat->attr_cache_timeout); bintime_clear(&fvdat->entry_cache_timeout); cache_purge(vp); } /* fuse start/stop */ int fuse_internal_init_callback(struct fuse_ticket *tick, struct uio *uio) { int err = 0; struct fuse_data *data = tick->tk_data; struct fuse_init_out *fiio; if ((err = tick->tk_aw_ohead.error)) { goto out; } if ((err = fticket_pull(tick, uio))) { goto out; } fiio = fticket_resp(tick)->base; /* XXX: Do we want to check anything further besides this? */ if (fiio->major < 7) { SDT_PROBE2(fusefs, , internal, trace, 1, "userpace version too low"); err = EPROTONOSUPPORT; goto out; } data->fuse_libabi_major = fiio->major; data->fuse_libabi_minor = fiio->minor; if (fuse_libabi_geq(data, 7, 5)) { if (fticket_resp(tick)->len == sizeof(struct fuse_init_out)) { data->max_readahead_blocks = fiio->max_readahead / maxbcachebuf; data->max_write = fiio->max_write; if (fiio->flags & FUSE_ASYNC_READ) data->dataflags |= FSESS_ASYNC_READ; if (fiio->flags & FUSE_POSIX_LOCKS) data->dataflags |= FSESS_POSIX_LOCKS; if (fiio->flags & FUSE_EXPORT_SUPPORT) data->dataflags |= FSESS_EXPORT_SUPPORT; /* * Don't bother to check FUSE_BIG_WRITES, because it's * redundant with max_write */ + /* + * max_background and congestion_threshold are not + * implemented + */ } else { err = EINVAL; } } else { /* Old fix values */ data->max_write = 4096; } out: if (err) { fdata_set_dead(data); } FUSE_LOCK(); data->dataflags |= FSESS_INITED; wakeup(&data->ticketer); FUSE_UNLOCK(); return 0; } void fuse_internal_send_init(struct fuse_data *data, struct thread *td) { struct fuse_init_in *fiii; struct fuse_dispatcher fdi; fdisp_init(&fdi, sizeof(*fiii)); fdisp_make(&fdi, FUSE_INIT, data->mp, 0, td, NULL); fiii = fdi.indata; fiii->major = FUSE_KERNEL_VERSION; fiii->minor = FUSE_KERNEL_MINOR_VERSION; /* * fusefs currently reads ahead no more than one cache block at a time. * See fuse_read_biobackend */ fiii->max_readahead = maxbcachebuf; /* * Unsupported features: * FUSE_FILE_OPS: No known FUSE server or client supports it * FUSE_ATOMIC_O_TRUNC: our VFS cannot support it * FUSE_DONT_MASK: unlike Linux, FreeBSD always applies the umask, even * when default ACLs are in use. */ fiii->flags = FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES; fuse_insert_callback(fdi.tick, fuse_internal_init_callback); fuse_insert_message(fdi.tick, false); fdisp_destroy(&fdi); } /* * Send a FUSE_SETATTR operation with no permissions checks. If cred is NULL, * send the request with root credentials */ int fuse_internal_setattr(struct vnode *vp, struct vattr *vap, struct thread *td, struct ucred *cred) { struct fuse_dispatcher fdi; struct fuse_setattr_in *fsai; struct mount *mp; pid_t pid = td->td_proc->p_pid; struct fuse_data *data; int dataflags; int err = 0; enum vtype vtyp; int sizechanged = -1; uint64_t newsize = 0; mp = vnode_mount(vp); data = fuse_get_mpdata(mp); dataflags = data->dataflags; fdisp_init(&fdi, sizeof(*fsai)); fdisp_make_vp(&fdi, FUSE_SETATTR, vp, td, cred); if (!cred) { fdi.finh->uid = 0; fdi.finh->gid = 0; } fsai = fdi.indata; fsai->valid = 0; if (vap->va_uid != (uid_t)VNOVAL) { fsai->uid = vap->va_uid; fsai->valid |= FATTR_UID; } if (vap->va_gid != (gid_t)VNOVAL) { fsai->gid = vap->va_gid; fsai->valid |= FATTR_GID; } if (vap->va_size != VNOVAL) { struct fuse_filehandle *fufh = NULL; /*Truncate to a new value. */ fsai->size = vap->va_size; sizechanged = 1; newsize = vap->va_size; fsai->valid |= FATTR_SIZE; fuse_filehandle_getrw(vp, FWRITE, &fufh, cred, pid); if (fufh) { fsai->fh = fufh->fh_id; fsai->valid |= FATTR_FH; } VTOFUD(vp)->flag &= ~FN_SIZECHANGE; } if (vap->va_atime.tv_sec != VNOVAL) { fsai->atime = vap->va_atime.tv_sec; fsai->atimensec = vap->va_atime.tv_nsec; fsai->valid |= FATTR_ATIME; if (vap->va_vaflags & VA_UTIMES_NULL) fsai->valid |= FATTR_ATIME_NOW; } if (vap->va_mtime.tv_sec != VNOVAL) { fsai->mtime = vap->va_mtime.tv_sec; fsai->mtimensec = vap->va_mtime.tv_nsec; fsai->valid |= FATTR_MTIME; if (vap->va_vaflags & VA_UTIMES_NULL) fsai->valid |= FATTR_MTIME_NOW; } if (vap->va_mode != (mode_t)VNOVAL) { fsai->mode = vap->va_mode & ALLPERMS; fsai->valid |= FATTR_MODE; } if (!fsai->valid) { goto out; } if ((err = fdisp_wait_answ(&fdi))) goto out; vtyp = IFTOVT(((struct fuse_attr_out *)fdi.answ)->attr.mode); if (vnode_vtype(vp) != vtyp) { if (vnode_vtype(vp) == VNON && vtyp != VNON) { SDT_PROBE2(fusefs, , internal, trace, 1, "FUSE: Dang! " "vnode_vtype is VNON and vtype isn't."); } else { /* * STALE vnode, ditch * * The vnode has changed its type "behind our back". * There's nothing really we can do, so let us just * force an internal revocation and tell the caller to * try again, if interested. */ fuse_internal_vnode_disappear(vp); err = EAGAIN; } } if (err == 0) { struct fuse_attr_out *fao = (struct fuse_attr_out*)fdi.answ; fuse_internal_cache_attrs(vp, &fao->attr, fao->attr_valid, fao->attr_valid_nsec, NULL); } out: fdisp_destroy(&fdi); return err; } #ifdef ZERO_PAD_INCOMPLETE_BUFS static int isbzero(void *buf, size_t len) { int i; for (i = 0; i < len; i++) { if (((char *)buf)[i]) return (0); } return (1); } #endif Index: projects/fuse2/sys/fs/fuse/fuse_kernel.h =================================================================== --- projects/fuse2/sys/fs/fuse/fuse_kernel.h (revision 349243) +++ projects/fuse2/sys/fs/fuse/fuse_kernel.h (revision 349244) @@ -1,594 +1,600 @@ /*-- * This file defines the kernel interface of FUSE * Copyright (C) 2001-2008 Miklos Szeredi * * This program can be distributed under the terms of the GNU GPL. * See the file COPYING. * * This -- and only this -- header file may also be distributed under * the terms of the BSD Licence as follows: * * Copyright (C) 2001-2007 Miklos Szeredi. 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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. * * $FreeBSD$ */ /* * This file defines the kernel interface of FUSE * * Protocol changelog: * * 7.9: * - new fuse_getattr_in input argument of GETATTR * - add lk_flags in fuse_lk_in * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in * - add blksize field to fuse_attr * - add file flags field to fuse_read_in and fuse_write_in * * 7.10 * - add nonseekable open flag * * 7.11 * - add IOCTL message * - add unsolicited notification support * * 7.12 * - add umask flag to input argument of open, mknod and mkdir * - add notification messages for invalidation of inodes and * directory entries + * + * 7.13 + * - make max number of background requests and congestion threshold + * tunables */ #ifndef _FUSE_FUSE_KERNEL_H #define _FUSE_FUSE_KERNEL_H #ifndef linux #include #define __u64 uint64_t #define __s64 int64_t #define __u32 uint32_t #define __s32 int32_t +#define __u16 uint16_t #else #include #endif /** Version number of this interface */ #define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ -#define FUSE_KERNEL_MINOR_VERSION 12 +#define FUSE_KERNEL_MINOR_VERSION 13 /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 /* Make sure all structures are padded to 64bit boundary, so 32bit userspace works under 64bit kernels */ struct fuse_attr { __u64 ino; __u64 size; __u64 blocks; __u64 atime; __u64 mtime; __u64 ctime; __u32 atimensec; __u32 mtimensec; __u32 ctimensec; __u32 mode; __u32 nlink; __u32 uid; __u32 gid; __u32 rdev; __u32 blksize; __u32 padding; }; struct fuse_kstatfs { __u64 blocks; __u64 bfree; __u64 bavail; __u64 files; __u64 ffree; __u32 bsize; __u32 namelen; __u32 frsize; __u32 padding; __u32 spare[6]; }; struct fuse_file_lock { __u64 start; __u64 end; __u32 type; __u32 pid; /* tgid */ }; /** * Bitmasks for fuse_setattr_in.valid */ #define FATTR_MODE (1 << 0) #define FATTR_UID (1 << 1) #define FATTR_GID (1 << 2) #define FATTR_SIZE (1 << 3) #define FATTR_ATIME (1 << 4) #define FATTR_MTIME (1 << 5) #define FATTR_FH (1 << 6) #define FATTR_ATIME_NOW (1 << 7) #define FATTR_MTIME_NOW (1 << 8) #define FATTR_LOCKOWNER (1 << 9) /** * Flags returned by the OPEN request * * FOPEN_DIRECT_IO: bypass page cache for this open file * FOPEN_KEEP_CACHE: don't invalidate the data cache on open * FOPEN_NONSEEKABLE: the file is not seekable */ #define FOPEN_DIRECT_IO (1 << 0) #define FOPEN_KEEP_CACHE (1 << 1) #define FOPEN_NONSEEKABLE (1 << 2) /** * INIT request/reply flags * * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." * FUSE_DONT_MASK: don't apply umask to file mode on create operations */ #define FUSE_ASYNC_READ (1 << 0) #define FUSE_POSIX_LOCKS (1 << 1) #define FUSE_FILE_OPS (1 << 2) #define FUSE_ATOMIC_O_TRUNC (1 << 3) #define FUSE_EXPORT_SUPPORT (1 << 4) #define FUSE_BIG_WRITES (1 << 5) #define FUSE_DONT_MASK (1 << 6) #ifdef linux /** * CUSE INIT request/reply flags * * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl */ #define CUSE_UNRESTRICTED_IOCTL (1 << 0) #endif /* linux */ /** * Release flags */ #define FUSE_RELEASE_FLUSH (1 << 0) /** * Getattr flags */ #define FUSE_GETATTR_FH (1 << 0) /** * Lock flags */ #define FUSE_LK_FLOCK (1 << 0) /** * WRITE flags * * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed * FUSE_WRITE_LOCKOWNER: lock_owner field is valid */ #define FUSE_WRITE_CACHE (1 << 0) #define FUSE_WRITE_LOCKOWNER (1 << 1) /** * Read flags */ #define FUSE_READ_LOCKOWNER (1 << 1) /** * Ioctl flags * * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed * FUSE_IOCTL_RETRY: retry with new iovecs * * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs */ #define FUSE_IOCTL_COMPAT (1 << 0) #define FUSE_IOCTL_UNRESTRICTED (1 << 1) #define FUSE_IOCTL_RETRY (1 << 2) #define FUSE_IOCTL_MAX_IOV 256 /** * Poll flags * * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify */ #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) enum fuse_opcode { FUSE_LOOKUP = 1, FUSE_FORGET = 2, /* no reply */ FUSE_GETATTR = 3, FUSE_SETATTR = 4, FUSE_READLINK = 5, FUSE_SYMLINK = 6, FUSE_MKNOD = 8, FUSE_MKDIR = 9, FUSE_UNLINK = 10, FUSE_RMDIR = 11, FUSE_RENAME = 12, FUSE_LINK = 13, FUSE_OPEN = 14, FUSE_READ = 15, FUSE_WRITE = 16, FUSE_STATFS = 17, FUSE_RELEASE = 18, FUSE_FSYNC = 20, FUSE_SETXATTR = 21, FUSE_GETXATTR = 22, FUSE_LISTXATTR = 23, FUSE_REMOVEXATTR = 24, FUSE_FLUSH = 25, FUSE_INIT = 26, FUSE_OPENDIR = 27, FUSE_READDIR = 28, FUSE_RELEASEDIR = 29, FUSE_FSYNCDIR = 30, FUSE_GETLK = 31, FUSE_SETLK = 32, FUSE_SETLKW = 33, FUSE_ACCESS = 34, FUSE_CREATE = 35, FUSE_INTERRUPT = 36, FUSE_BMAP = 37, FUSE_DESTROY = 38, FUSE_IOCTL = 39, FUSE_POLL = 40, #ifdef linux /* CUSE specific operations */ CUSE_INIT = 4096, #endif /* linux */ }; enum fuse_notify_code { FUSE_NOTIFY_POLL = 1, FUSE_NOTIFY_INVAL_INODE = 2, FUSE_NOTIFY_INVAL_ENTRY = 3, FUSE_NOTIFY_CODE_MAX, }; /* The read buffer is required to be at least 8k, but may be much larger */ #define FUSE_MIN_READ_BUFFER 8192 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 struct fuse_entry_out { __u64 nodeid; /* Inode ID */ __u64 generation; /* Inode generation: nodeid:gen must be unique for the fs's lifetime */ __u64 entry_valid; /* Cache timeout for the name */ __u64 attr_valid; /* Cache timeout for the attributes */ __u32 entry_valid_nsec; __u32 attr_valid_nsec; struct fuse_attr attr; }; struct fuse_forget_in { __u64 nlookup; }; struct fuse_getattr_in { __u32 getattr_flags; __u32 dummy; __u64 fh; }; #define FUSE_COMPAT_ATTR_OUT_SIZE 96 struct fuse_attr_out { __u64 attr_valid; /* Cache timeout for the attributes */ __u32 attr_valid_nsec; __u32 dummy; struct fuse_attr attr; }; #define FUSE_COMPAT_MKNOD_IN_SIZE 8 struct fuse_mknod_in { __u32 mode; __u32 rdev; __u32 umask; __u32 padding; }; struct fuse_mkdir_in { __u32 mode; __u32 umask; }; struct fuse_rename_in { __u64 newdir; }; struct fuse_link_in { __u64 oldnodeid; }; struct fuse_setattr_in { __u32 valid; __u32 padding; __u64 fh; __u64 size; __u64 lock_owner; __u64 atime; __u64 mtime; __u64 unused2; __u32 atimensec; __u32 mtimensec; __u32 unused3; __u32 mode; __u32 unused4; __u32 uid; __u32 gid; __u32 unused5; }; struct fuse_open_in { __u32 flags; __u32 unused; }; struct fuse_create_in { __u32 flags; __u32 mode; __u32 umask; __u32 padding; }; struct fuse_open_out { __u64 fh; __u32 open_flags; __u32 padding; }; struct fuse_release_in { __u64 fh; __u32 flags; __u32 release_flags; __u64 lock_owner; }; struct fuse_flush_in { __u64 fh; __u32 unused; __u32 padding; __u64 lock_owner; }; struct fuse_read_in { __u64 fh; __u64 offset; __u32 size; __u32 read_flags; __u64 lock_owner; __u32 flags; __u32 padding; }; #define FUSE_COMPAT_WRITE_IN_SIZE 24 struct fuse_write_in { __u64 fh; __u64 offset; __u32 size; __u32 write_flags; __u64 lock_owner; __u32 flags; __u32 padding; }; struct fuse_write_out { __u32 size; __u32 padding; }; #define FUSE_COMPAT_STATFS_SIZE 48 struct fuse_statfs_out { struct fuse_kstatfs st; }; struct fuse_fsync_in { __u64 fh; __u32 fsync_flags; __u32 padding; }; struct fuse_setxattr_in { __u32 size; __u32 flags; }; struct fuse_listxattr_in { __u32 size; __u32 padding; }; struct fuse_listxattr_out { __u32 size; __u32 padding; }; struct fuse_getxattr_in { __u32 size; __u32 padding; }; struct fuse_getxattr_out { __u32 size; __u32 padding; }; struct fuse_lk_in { __u64 fh; __u64 owner; struct fuse_file_lock lk; __u32 lk_flags; __u32 padding; }; struct fuse_lk_out { struct fuse_file_lock lk; }; struct fuse_access_in { __u32 mask; __u32 padding; }; struct fuse_init_in { __u32 major; __u32 minor; __u32 max_readahead; __u32 flags; }; struct fuse_init_out { __u32 major; __u32 minor; __u32 max_readahead; __u32 flags; - __u32 unused; + __u16 max_background; + __u16 congestion_threshold; __u32 max_write; }; #ifdef linux #define CUSE_INIT_INFO_MAX 4096 struct cuse_init_in { __u32 major; __u32 minor; __u32 unused; __u32 flags; }; struct cuse_init_out { __u32 major; __u32 minor; __u32 unused; __u32 flags; __u32 max_read; __u32 max_write; __u32 dev_major; /* chardev major */ __u32 dev_minor; /* chardev minor */ __u32 spare[10]; }; #endif /* linux */ struct fuse_interrupt_in { __u64 unique; }; struct fuse_bmap_in { __u64 block; __u32 blocksize; __u32 padding; }; struct fuse_bmap_out { __u64 block; }; struct fuse_ioctl_in { __u64 fh; __u32 flags; __u32 cmd; __u64 arg; __u32 in_size; __u32 out_size; }; struct fuse_ioctl_out { __s32 result; __u32 flags; __u32 in_iovs; __u32 out_iovs; }; struct fuse_poll_in { __u64 fh; __u64 kh; __u32 flags; __u32 padding; }; struct fuse_poll_out { __u32 revents; __u32 padding; }; struct fuse_notify_poll_wakeup_out { __u64 kh; }; struct fuse_in_header { __u32 len; __u32 opcode; __u64 unique; __u64 nodeid; __u32 uid; __u32 gid; __u32 pid; __u32 padding; }; struct fuse_out_header { __u32 len; __s32 error; __u64 unique; }; struct fuse_dirent { __u64 ino; __u64 off; __u32 namelen; __u32 type; char name[0]; }; #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1)) #define FUSE_DIRENT_SIZE(d) \ FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) struct fuse_notify_inval_inode_out { __u64 ino; __s64 off; __s64 len; }; struct fuse_notify_inval_entry_out { __u64 parent; __u32 namelen; __u32 padding; }; #endif /* _FUSE_FUSE_KERNEL_H */