/* struct vnop_fsync_args { struct vnodeop_desc *a_desc; struct vnode * a_vp; struct ucred * a_cred; int a_waitfor; struct thread * a_td; }; */ static int fuse_vnop_fsync(struct vop_fsync_args *ap) { struct vnode *vp = ap->a_vp; struct thread *td = ap->a_td; struct fuse_filehandle *fufh; struct fuse_vnode_data *fvdat = VTOFUD(vp); int type, err = 0; fuse_trace_printf_vnop(); if (fuse_isdeadfs(vp)) { return 0; } if ((err = vop_stdfsync(ap))) return err; if (!fsess_isimpl(vnode_mount(vp), (vnode_vtype(vp) == VDIR ? FUSE_FSYNCDIR : FUSE_FSYNC))) { goto out; } for (type = 0; type < FUFH_MAXTYPE; type++) { fufh = &(fvdat->fufh[type]); if (FUFH_IS_VALID(fufh)) { fuse_internal_fsync(vp, td, NULL, fufh); } } out: return 0; }
int fuse_filehandle_put(vnode_t vp, vfs_context_t context, fufh_type_t fufh_type, fuse_op_waitfor_t waitfor) { struct fuse_data *data; struct fuse_dispatcher fdi; struct fuse_abi_data fri; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh = NULL; int err = 0; int op = FUSE_RELEASE; fuse_trace_printf("fuse_filehandle_put(vp=%p, fufh_type=%d)\n", vp, fufh_type); fufh = &(fvdat->fufh[fufh_type]); if (FUFH_IS_VALID(fufh)) { panic("osxfuse: filehandle_put called on a valid fufh (type=%d)", fufh_type); /* NOTREACHED */ } if (fuse_isdeadfs(vp)) { goto out; } data = fuse_get_mpdata(vnode_mount(vp)); if (vnode_isdir(vp)) { op = FUSE_RELEASEDIR; } fdisp_init_abi(&fdi, fuse_release_in, data); fdisp_make_vp(&fdi, op, vp, context); fuse_abi_data_init(&fri, DATOI(data), fdi.indata); fuse_release_in_set_fh(&fri, fufh->fh_id); fuse_release_in_set_flags(&fri, fufh->open_flags); if (waitfor == FUSE_OP_FOREGROUNDED) { err = fdisp_wait_answ(&fdi); if (err) { goto out; } } else { fuse_insert_message(fdi.tick); } fuse_ticket_release(fdi.tick); out: FUSE_OSAddAtomic(-1, (SInt32 *)&fuse_fh_current); fuse_invalidate_attr(vp); return err; }
int fuse_filehandle_valid(struct vnode *vp, fufh_type_t fufh_type) { struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh; fufh = &(fvdat->fufh[fufh_type]); return FUFH_IS_VALID(fufh); }
int fuse_filehandle_put(vnode_t vp, vfs_context_t context, fufh_type_t fufh_type) { struct fuse_dispatcher fdi; struct fuse_release_in *fri; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh = NULL; int err = 0; int isdir = 0; int op = FUSE_RELEASE; const bool wait_for_completion = true; fuse_trace_printf("fuse_filehandle_put(vp=%p, fufh_type=%d)\n", vp, fufh_type); fufh = &(fvdat->fufh[fufh_type]); if (FUFH_IS_VALID(fufh)) { panic("fuse4x: filehandle_put called on a valid fufh (type=%d)", fufh_type); /* NOTREACHED */ } if (fuse_isdeadfs(vp)) { goto out; } if (vnode_isdir(vp)) { op = FUSE_RELEASEDIR; isdir = 1; } fdisp_init(&fdi, sizeof(*fri)); fdisp_make_vp(&fdi, op, vp, context); fri = fdi.indata; fri->fh = fufh->fh_id; fri->flags = fufh->open_flags; if (wait_for_completion) { if ((err = fdisp_wait_answ(&fdi))) { goto out; } else { fuse_ticket_drop(fdi.tick); } } else { fuse_insert_callback(fdi.tick, NULL); fuse_insert_message(fdi.tick); } out: OSAddAtomic(-1, (SInt32 *)&fuse_fh_current); fuse_invalidate_attr(vp); return err; }
static int fuse_sync_callback(vnode_t vp, void *cargs) { int type; struct fuse_sync_cargs *args; struct fuse_vnode_data *fvdat; struct fuse_filehandle *fufh; struct fuse_data *data; mount_t mp; if (!vnode_hasdirtyblks(vp)) { return VNODE_RETURNED; } mp = vnode_mount(vp); if (fuse_isdeadfs_mp(mp)) { return VNODE_RETURNED_DONE; } data = fuse_get_mpdata(mp); if (!fuse_implemented(data, (vnode_isdir(vp)) ? FSESS_NOIMPLBIT(FSYNCDIR) : FSESS_NOIMPLBIT(FSYNC))) { return VNODE_RETURNED; } args = (struct fuse_sync_cargs *)cargs; fvdat = VTOFUD(vp); #if M_OSXFUSE_ENABLE_BIG_LOCK fuse_biglock_unlock(data->biglock); #endif cluster_push(vp, 0); #if M_OSXFUSE_ENABLE_BIG_LOCK fuse_biglock_lock(data->biglock); #endif for (type = 0; type < FUFH_MAXTYPE; type++) { fufh = &(fvdat->fufh[type]); if (FUFH_IS_VALID(fufh)) { (void)fuse_internal_fsync_fh(vp, args->context, fufh, FUSE_OP_FOREGROUNDED); } } /* * In general: * * - can use vnode_isinuse() if the need be * - vnode and UBC are in lock-step * - note that umount will call ubc_sync_range() */ return VNODE_RETURNED; }
void fuse_filehandle_init(struct vnode *vp, fufh_type_t fufh_type, struct fuse_filehandle **fufhp, uint64_t fh_id) { struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh; FS_DEBUG("id=%jd type=%d\n", (intmax_t)fh_id, fufh_type); fufh = &(fvdat->fufh[fufh_type]); MPASS(!FUFH_IS_VALID(fufh)); fufh->fh_id = fh_id; fufh->fh_type = fufh_type; if (!FUFH_IS_VALID(fufh)) { panic("FUSE: init: invalid filehandle id (type=%d)", fufh_type); } if (fufhp != NULL) *fufhp = fufh; atomic_add_acq_int(&fuse_fh_count, 1); }
int fuse_filehandle_getrw(struct vnode *vp, fufh_type_t fufh_type, struct fuse_filehandle **fufhp) { struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh; fufh = &(fvdat->fufh[fufh_type]); if (!FUFH_IS_VALID(fufh)) { fufh_type = FUFH_RDWR; } return fuse_filehandle_get(vp, fufh_type, fufhp); }
int fuse_filehandle_close(struct vnode *vp, fufh_type_t fufh_type, struct thread *td, struct ucred *cred) { struct fuse_dispatcher fdi; struct fuse_release_in *fri; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh = NULL; int err = 0; int isdir = 0; int op = FUSE_RELEASE; fuse_trace_printf("fuse_filehandle_put(vp=%p, fufh_type=%d)\n", vp, fufh_type); fufh = &(fvdat->fufh[fufh_type]); if (!FUFH_IS_VALID(fufh)) { panic("FUSE: filehandle_put called on invalid fufh (type=%d)", fufh_type); /* NOTREACHED */ } if (fuse_isdeadfs(vp)) { goto out; } if (vnode_isdir(vp)) { op = FUSE_RELEASEDIR; isdir = 1; } fdisp_init(&fdi, sizeof(*fri)); fdisp_make_vp(&fdi, op, vp, td, cred); fri = fdi.indata; fri->fh = fufh->fh_id; fri->flags = fuse_filehandle_xlate_to_oflags(fufh_type); err = fdisp_wait_answ(&fdi); fdisp_destroy(&fdi); out: atomic_subtract_acq_int(&fuse_fh_count, 1); fufh->fh_id = (uint64_t)-1; fufh->fh_type = FUFH_INVALID; fuse_invalidate_attr(vp); return err; }
static int fuse_sync_callback(vnode_t vp, void *cargs) { int type; struct fuse_sync_cargs *args; struct fuse_vnode_data *fvdat; struct fuse_dispatcher fdi; struct fuse_filehandle *fufh; struct fuse_data *data; mount_t mp; if (!vnode_hasdirtyblks(vp)) { return VNODE_RETURNED; } mp = vnode_mount(vp); if (fuse_isdeadfs(vp)) { return VNODE_RETURNED_DONE; } data = fuse_get_mpdata(mp); if (!fuse_implemented(data, (vnode_isdir(vp)) ? FSESS_NOIMPLBIT(FSYNCDIR) : FSESS_NOIMPLBIT(FSYNC))) { return VNODE_RETURNED; } args = (struct fuse_sync_cargs *)cargs; fvdat = VTOFUD(vp); cluster_push(vp, 0); fuse_dispatcher_init(&fdi, 0); for (type = 0; type < FUFH_MAXTYPE; type++) { fufh = &(fvdat->fufh[type]); if (FUFH_IS_VALID(fufh)) { (void)fuse_internal_fsync(vp, args->context, fufh, &fdi); } } /* * In general: * * - can use vnode_isinuse() if the need be * - vnode and UBC are in lock-step * - note that umount will call ubc_sync_range() */ return VNODE_RETURNED; }
int fuse_filehandle_get(struct vnode *vp, fufh_type_t fufh_type, struct fuse_filehandle **fufhp) { struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh; fufh = &(fvdat->fufh[fufh_type]); if (!FUFH_IS_VALID(fufh)) return EBADF; if (fufhp != NULL) *fufhp = fufh; return 0; }
int fuse_filehandle_put(vnode_t vp, vfs_context_t context, fufh_type_t fufh_type) { struct fuse_dispatcher fdi; struct fuse_release_in *fri; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh = NULL; fuse_trace_printf("fuse_filehandle_put(vp=%p, fufh_type=%d)\n", vp, fufh_type); fufh = &(fvdat->fufh[fufh_type]); if (FUFH_IS_VALID(fufh)) { panic("fuse4x: filehandle_put called on a valid fufh (type=%d)", fufh_type); /* NOTREACHED */ } if (fuse_isdeadfs(vp)) { goto out; } int op = vnode_isdir(vp) ? FUSE_RELEASEDIR : FUSE_RELEASE; fuse_dispatcher_init(&fdi, sizeof(*fri)); fuse_dispatcher_make_vp(&fdi, op, vp, context); fri = fdi.indata; fri->fh = fufh->fh_id; fri->flags = fufh->open_flags; int err = fuse_dispatcher_wait_answer(&fdi); if (!err) { fuse_ticket_drop(fdi.ticket); } out: OSDecrementAtomic((SInt32 *)&fuse_fh_current); fuse_invalidate_attr(vp); return err; }
/* struct vnop_reclaim_args { struct vnode *a_vp; struct thread *a_td; }; */ static int fuse_vnop_reclaim(struct vop_reclaim_args *ap) { struct vnode *vp = ap->a_vp; struct thread *td = ap->a_td; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh = NULL; int type; if (!fvdat) { panic("FUSE: no vnode data during recycling"); } FS_DEBUG("inode=%ju\n", (uintmax_t)VTOI(vp)); for (type = 0; type < FUFH_MAXTYPE; type++) { fufh = &(fvdat->fufh[type]); if (FUFH_IS_VALID(fufh)) { printf("FUSE: vnode being reclaimed but fufh (type=%d) is valid", type); fuse_filehandle_close(vp, type, td, NULL); } } if ((!fuse_isdeadfs(vp)) && (fvdat->nlookup)) { fuse_internal_forget_send(vnode_mount(vp), td, NULL, VTOI(vp), fvdat->nlookup); } fuse_vnode_setparent(vp, NULL); cache_purge(vp); vfs_hash_remove(vp); vnode_destroy_vobject(vp); fuse_vnode_destroy(vp); return 0; }
/* struct vnop_inactive_args { struct vnode *a_vp; struct thread *a_td; }; */ static int fuse_vnop_inactive(struct vop_inactive_args *ap) { struct vnode *vp = ap->a_vp; struct thread *td = ap->a_td; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh = NULL; int type, need_flush = 1; FS_DEBUG("inode=%ju\n", (uintmax_t)VTOI(vp)); for (type = 0; type < FUFH_MAXTYPE; type++) { fufh = &(fvdat->fufh[type]); if (FUFH_IS_VALID(fufh)) { if (need_flush && vp->v_type == VREG) { if ((VTOFUD(vp)->flag & FN_SIZECHANGE) != 0) { fuse_vnode_savesize(vp, NULL); } if (fuse_data_cache_invalidate || (fvdat->flag & FN_REVOKED) != 0) fuse_io_invalbuf(vp, td); else fuse_io_flushbuf(vp, MNT_WAIT, td); need_flush = 0; } fuse_filehandle_close(vp, type, td, NULL); } } if ((fvdat->flag & FN_REVOKED) != 0 && fuse_reclaim_revoked) { vrecycle(vp); } return 0; }
/* * Because of the vagaries of how a filehandle can be used, we try not to * be too smart in here (we try to be smart elsewhere). It is required that * you come in here only if you really do not have the said filehandle--else * we panic. */ int fuse_filehandle_get(vnode_t vp, vfs_context_t context, fufh_type_t fufh_type, int mode) { struct fuse_dispatcher fdi; struct fuse_abi_data foi; struct fuse_abi_data foo; struct fuse_filehandle *fufh; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp)); int err = 0; int oflags = 0; int op = FUSE_OPEN; fuse_trace_printf("fuse_filehandle_get(vp=%p, fufh_type=%d, mode=%x)\n", vp, fufh_type, mode); fufh = &(fvdat->fufh[fufh_type]); if (FUFH_IS_VALID(fufh)) { panic("osxfuse: filehandle_get called despite valid fufh (type=%d)", fufh_type); /* NOTREACHED */ } /* * Note that this means we are effectively FILTERING OUT open() flags. */ (void)mode; oflags = fuse_filehandle_xlate_to_oflags(fufh_type); if (vnode_isdir(vp)) { op = FUSE_OPENDIR; if (fufh_type != FUFH_RDONLY) { IOLog("osxfuse: non-rdonly fufh requested for directory\n"); fufh_type = FUFH_RDONLY; } } if (vnode_islnk(vp) && (mode & O_SYMLINK)) { oflags |= O_SYMLINK; } if ((mode & O_TRUNC) && (data->dataflags & FSESS_ATOMIC_O_TRUNC)) { oflags |= O_TRUNC; } fdisp_init_abi(&fdi, fuse_open_in, data); fdisp_make_vp(&fdi, op, vp, context); fuse_abi_data_init(&foi, DATOI(data), fdi.indata); fuse_open_in_set_flags(&foi, oflags); FUSE_OSAddAtomic(1, (SInt32 *)&fuse_fh_upcall_count); err = fdisp_wait_answ(&fdi); if (err) { #if M_OSXFUSE_ENABLE_UNSUPPORTED const char *vname = vnode_getname(vp); #endif /* M_OSXFUSE_ENABLE_UNSUPPORTED */ if (err == ENOENT) { /* * See comment in fuse_vnop_reclaim(). */ cache_purge(vp); } #if M_OSXFUSE_ENABLE_UNSUPPORTED IOLog("osxfuse: filehandle_get: failed for %s " "(type=%d, err=%d, caller=%p)\n", (vname) ? vname : "?", fufh_type, err, __builtin_return_address(0)); if (vname) { vnode_putname(vname); } #endif /* M_OSXFUSE_ENABLE_UNSUPPORTED */ if (err == ENOENT) { #if M_OSXFUSE_ENABLE_BIG_LOCK fuse_biglock_unlock(data->biglock); #endif fuse_internal_vnode_disappear(vp, context, REVOKE_SOFT); #if M_OSXFUSE_ENABLE_BIG_LOCK fuse_biglock_lock(data->biglock); #endif } return err; } FUSE_OSAddAtomic(1, (SInt32 *)&fuse_fh_current); fuse_abi_data_init(&foo, DATOI(data), fdi.answ); fufh->fh_id = fuse_open_out_get_fh(&foo); fufh->open_count = 1; fufh->open_flags = oflags; fufh->fuse_open_flags = fuse_open_out_get_open_flags(&foo); fufh->aux_count = 0; fuse_ticket_release(fdi.tick); return 0; }
/* setattr sidekicks */ __private_extern__ int fuse_internal_attr_vat2fsai(mount_t mp, vnode_t vp, struct vnode_attr *vap, struct fuse_setattr_in *fsai, uint64_t *newsize) { /* * XXX: Locking * * We need to worry about the file size changing in setattr(). If the call * is indeed altering the size, then: * * lock_exclusive(truncatelock) * lock(nodelock) * set the new size * unlock(nodelock) * adjust ubc * lock(nodelock) * do cleanup * unlock(nodelock) * unlock(truncatelock) * ... */ int sizechanged = 0; uid_t nuid; gid_t ngid; fsai->valid = 0; if (newsize) { *newsize = 0; } nuid = VATTR_IS_ACTIVE(vap, va_uid) ? vap->va_uid : (uid_t)VNOVAL; if (nuid != (uid_t)VNOVAL) { fsai->uid = nuid; fsai->valid |= FATTR_UID; } VATTR_SET_SUPPORTED(vap, va_uid); ngid = VATTR_IS_ACTIVE(vap, va_gid) ? vap->va_gid : (gid_t)VNOVAL; if (ngid != (gid_t)VNOVAL) { fsai->gid = ngid; fsai->valid |= FATTR_GID; } VATTR_SET_SUPPORTED(vap, va_gid); if (VATTR_IS_ACTIVE(vap, va_data_size)) { // Truncate to a new value. fsai->size = vap->va_data_size; sizechanged = 1; if (newsize) { *newsize = vap->va_data_size; } fsai->valid |= FATTR_SIZE; if (vp) { struct fuse_filehandle *fufh = NULL; fufh_type_t fufh_type = FUFH_WRONLY; struct fuse_vnode_data *fvdat = VTOFUD(vp); fufh = &(fvdat->fufh[fufh_type]); if (!FUFH_IS_VALID(fufh)) { fufh_type = FUFH_RDWR; fufh = &(fvdat->fufh[fufh_type]); if (!FUFH_IS_VALID(fufh)) { fufh = NULL; } } if (fufh) { fsai->fh = fufh->fh_id; fsai->valid |= FATTR_FH; } } } VATTR_SET_SUPPORTED(vap, va_data_size); /* * Possible timestamps: * * Mac OS X Linux FUSE API * * va_access_time last access time atime atime * va_backup_time last backup time - - * va_change_time last metadata change time ctime* - * va_create_time creation time - - * va_modify_time last data modification time mtime mtime * */ if (VATTR_IS_ACTIVE(vap, va_access_time)) { fsai->atime = vap->va_access_time.tv_sec; /* XXX: truncation */ fsai->atimensec = (uint32_t)vap->va_access_time.tv_nsec; fsai->valid |= FATTR_ATIME; } VATTR_SET_SUPPORTED(vap, va_access_time); if (VATTR_IS_ACTIVE(vap, va_modify_time)) { fsai->mtime = vap->va_modify_time.tv_sec; /* XXX: truncation */ fsai->mtimensec = (uint32_t)vap->va_modify_time.tv_nsec; fsai->valid |= FATTR_MTIME; } VATTR_SET_SUPPORTED(vap, va_modify_time); if (VATTR_IS_ACTIVE(vap, va_backup_time) && fuse_isxtimes_mp(mp)) { fsai->bkuptime = vap->va_backup_time.tv_sec; /* XXX: truncation */ fsai->bkuptimensec = (uint32_t)vap->va_backup_time.tv_nsec; fsai->valid |= FATTR_BKUPTIME; VATTR_SET_SUPPORTED(vap, va_backup_time); } if (VATTR_IS_ACTIVE(vap, va_change_time)) { if (fuse_isxtimes_mp(mp)) { fsai->chgtime = vap->va_change_time.tv_sec; /* XXX: truncation */ fsai->chgtimensec = (uint32_t)vap->va_change_time.tv_nsec; fsai->valid |= FATTR_CHGTIME; VATTR_SET_SUPPORTED(vap, va_change_time); } } if (VATTR_IS_ACTIVE(vap, va_create_time) && fuse_isxtimes_mp(mp)) { fsai->crtime = vap->va_create_time.tv_sec; /* XXX: truncation */ fsai->crtimensec = (uint32_t)vap->va_create_time.tv_nsec; fsai->valid |= FATTR_CRTIME; VATTR_SET_SUPPORTED(vap, va_create_time); } if (VATTR_IS_ACTIVE(vap, va_mode)) { fsai->mode = vap->va_mode & ALLPERMS; fsai->valid |= FATTR_MODE; } VATTR_SET_SUPPORTED(vap, va_mode); if (VATTR_IS_ACTIVE(vap, va_flags)) { fsai->flags = vap->va_flags; fsai->valid |= FATTR_FLAGS; } VATTR_SET_SUPPORTED(vap, va_flags); /* * We /are/ OK with va_acl, va_guuid, and va_uuuid passing through here. */ return sizechanged; }
/* * Because of the vagaries of how a filehandle can be used, we try not to * be too smart in here (we try to be smart elsewhere). It is required that * you come in here only if you really do not have the said filehandle--else * we panic. * * This function should be called with fufh_mtx mutex locked. */ int fuse_filehandle_get(vnode_t vp, vfs_context_t context, fufh_type_t fufh_type, int mode) { struct fuse_dispatcher fdi; struct fuse_open_in *foi; struct fuse_open_out *foo; struct fuse_filehandle *fufh; struct fuse_vnode_data *fvdat = VTOFUD(vp); int err = 0; int oflags = 0; int op = FUSE_OPEN; fuse_trace_printf("fuse_filehandle_get(vp=%p, fufh_type=%d, mode=%x)\n", vp, fufh_type, mode); fufh = &(fvdat->fufh[fufh_type]); if (FUFH_IS_VALID(fufh)) { panic("fuse4x: filehandle_get called despite valid fufh (type=%d)", fufh_type); /* NOTREACHED */ } /* * Note that this means we are effectively FILTERING OUT open() flags. */ oflags = fuse_filehandle_xlate_to_oflags(fufh_type); if (vnode_isdir(vp)) { op = FUSE_OPENDIR; if (fufh_type != FUFH_RDONLY) { log("fuse4x: non-rdonly fufh requested for directory\n"); fufh_type = FUFH_RDONLY; } } fuse_dispatcher_init(&fdi, sizeof(*foi)); fuse_dispatcher_make_vp(&fdi, op, vp, context); if (vnode_islnk(vp) && (mode & O_SYMLINK)) { oflags |= O_SYMLINK; } foi = fdi.indata; foi->flags = oflags; OSIncrementAtomic((SInt32 *)&fuse_fh_upcall_count); if ((err = fuse_dispatcher_wait_answer(&fdi))) { const char *vname = vnode_getname(vp); if (err == ENOENT) { /* * See comment in fuse_vnop_reclaim(). */ cache_purge(vp); } log("fuse4x: filehandle_get: failed for %s " "(type=%d, err=%d, caller=%p)\n", (vname) ? vname : "?", fufh_type, err, __builtin_return_address(0)); if (vname) { vnode_putname(vname); } if (err == ENOENT) { fuse_vncache_purge(vp); } return err; } OSIncrementAtomic((SInt32 *)&fuse_fh_current); foo = fdi.answer; fufh->fh_id = foo->fh; fufh->open_count = 1; fufh->open_flags = oflags; fufh->fuse_open_flags = foo->open_flags; fuse_ticket_drop(fdi.ticket); return 0; }
__private_extern__ int fuse_internal_strategy(vnode_t vp, buf_t bp) { size_t biosize; size_t chunksize; size_t respsize; int mapped = FALSE; int mode; int op; int vtype = vnode_vtype(vp); int err = 0; caddr_t bufdat; off_t left; off_t offset; int32_t bflags = buf_flags(bp); fufh_type_t fufh_type; struct fuse_dispatcher fdi; struct fuse_data *data; struct fuse_vnode_data *fvdat = VTOFUD(vp); struct fuse_filehandle *fufh = NULL; mount_t mp = vnode_mount(vp); data = fuse_get_mpdata(mp); biosize = data->blocksize; if (!(vtype == VREG || vtype == VDIR)) { return ENOTSUP; } if (bflags & B_READ) { mode = FREAD; fufh_type = FUFH_RDONLY; /* FUFH_RDWR will also do */ } else { mode = FWRITE; fufh_type = FUFH_WRONLY; /* FUFH_RDWR will also do */ } if (fvdat->flag & FN_CREATING) { fuse_lck_mtx_lock(fvdat->createlock); if (fvdat->flag & FN_CREATING) { (void)fuse_msleep(fvdat->creator, fvdat->createlock, PDROP | PINOD | PCATCH, "fuse_internal_strategy", NULL); } else { fuse_lck_mtx_unlock(fvdat->createlock); } } fufh = &(fvdat->fufh[fufh_type]); if (!FUFH_IS_VALID(fufh)) { fufh_type = FUFH_RDWR; fufh = &(fvdat->fufh[fufh_type]); if (!FUFH_IS_VALID(fufh)) { fufh = NULL; } else { /* We've successfully fallen back to FUFH_RDWR. */ } } if (!fufh) { if (mode == FREAD) { fufh_type = FUFH_RDONLY; } else { fufh_type = FUFH_RDWR; } /* * Lets NOT do the filehandle preflight check here. */ err = fuse_filehandle_get(vp, NULL, fufh_type, 0 /* mode */); if (!err) { fufh = &(fvdat->fufh[fufh_type]); FUFH_AUX_INC(fufh); /* We've created a NEW fufh of type fufh_type. open_count is 1. */ } } else { /* good fufh */ FUSE_OSAddAtomic(1, (SInt32 *)&fuse_fh_reuse_count); /* We're using an existing fufh of type fufh_type. */ } if (err) { /* A more typical error case. */ if ((err == ENOTCONN) || fuse_isdeadfs(vp)) { buf_seterror(bp, EIO); buf_biodone(bp); return EIO; } IOLog("MacFUSE: strategy failed to get fh " "(vtype=%d, fufh_type=%d, err=%d)\n", vtype, fufh_type, err); if (!vfs_issynchronous(mp)) { IOLog("MacFUSE: asynchronous write failed!\n"); } buf_seterror(bp, EIO); buf_biodone(bp); return EIO; } if (!fufh) { panic("MacFUSE: tried everything but still no fufh"); /* NOTREACHED */ } #define B_INVAL 0x00040000 /* Does not contain valid info. */ #define B_ERROR 0x00080000 /* I/O error occurred. */ if (bflags & B_INVAL) { IOLog("MacFUSE: buffer does not contain valid information\n"); } if (bflags & B_ERROR) { IOLog("MacFUSE: an I/O error has occured\n"); } if (buf_count(bp) == 0) { return 0; } fdisp_init(&fdi, 0); if (mode == FREAD) { struct fuse_read_in *fri; buf_setresid(bp, buf_count(bp)); offset = (off_t)((off_t)buf_blkno(bp) * biosize); if (offset >= fvdat->filesize) { /* Trying to read at/after EOF? */ if (offset != fvdat->filesize) { /* Trying to read after EOF? */ buf_seterror(bp, EINVAL); } buf_biodone(bp); return 0; } /* Note that we just made sure that offset < fvdat->filesize. */ if ((offset + buf_count(bp)) > fvdat->filesize) { /* Trimming read */ buf_setcount(bp, (uint32_t)(fvdat->filesize - offset)); } if (buf_map(bp, &bufdat)) { IOLog("MacFUSE: failed to map buffer in strategy\n"); return EFAULT; } else { mapped = TRUE; } while (buf_resid(bp) > 0) { chunksize = min((size_t)buf_resid(bp), data->iosize); fdi.iosize = sizeof(*fri); op = FUSE_READ; if (vtype == VDIR) { op = FUSE_READDIR; } fdisp_make_vp(&fdi, op, vp, (vfs_context_t)0); fri = fdi.indata; fri->fh = fufh->fh_id; /* * Historical note: * * fri->offset = ((off_t)(buf_blkno(bp))) * biosize; * * This wasn't being incremented!? */ fri->offset = offset; fri->size = (typeof(fri->size))chunksize; fdi.tick->tk_aw_type = FT_A_BUF; fdi.tick->tk_aw_bufdata = bufdat; if ((err = fdisp_wait_answ(&fdi))) { /* There was a problem with reading. */ goto out; } respsize = fdi.tick->tk_aw_bufsize; if (respsize < 0) { /* Cannot really happen... */ err = EIO; goto out; } buf_setresid(bp, (uint32_t)(buf_resid(bp) - respsize)); bufdat += respsize; offset += respsize; /* Did we hit EOF before being done? */ if ((respsize == 0) && (buf_resid(bp) > 0)) { /* * Historical note: * If we don't get enough data, just fill the rest with zeros. * In NFS context, this would mean a hole in the file. */ /* Zero-pad the incomplete buffer. */ bzero(bufdat, buf_resid(bp)); buf_setresid(bp, 0); break; } } /* while (buf_resid(bp) > 0) */ } else { /* write */ struct fuse_write_in *fwi; struct fuse_write_out *fwo; int merr = 0; off_t diff; if (buf_map(bp, &bufdat)) { IOLog("MacFUSE: failed to map buffer in strategy\n"); return EFAULT; } else { mapped = TRUE; } /* Write begin */ buf_setresid(bp, buf_count(bp)); offset = (off_t)((off_t)buf_blkno(bp) * biosize); /* XXX: TBD -- Check here for extension (writing past end) */ left = buf_count(bp); while (left) { fdi.iosize = sizeof(*fwi); op = FUSE_WRITE; fdisp_make_vp(&fdi, op, vp, (vfs_context_t)0); chunksize = min((size_t)left, data->iosize); fwi = fdi.indata; fwi->fh = fufh->fh_id; fwi->offset = offset; fwi->size = (typeof(fwi->size))chunksize; fdi.tick->tk_ms_type = FT_M_BUF; fdi.tick->tk_ms_bufdata = bufdat; fdi.tick->tk_ms_bufsize = chunksize; /* About to write <chunksize> at <offset> */ if ((err = fdisp_wait_answ(&fdi))) { merr = 1; break; } fwo = fdi.answ; diff = chunksize - fwo->size; if (diff < 0) { err = EINVAL; break; } left -= fwo->size; bufdat += fwo->size; offset += fwo->size; buf_setresid(bp, buf_resid(bp) - fwo->size); } if (merr) { goto out; } } if (fdi.tick) { fuse_ticket_drop(fdi.tick); } else { /* No ticket upon leaving */ } out: if (err) { buf_seterror(bp, err); } if (mapped == TRUE) { buf_unmap(bp); } buf_biodone(bp); return err; }