Index: uspace/srv/fs/exfat/Makefile =================================================================== --- uspace/srv/fs/exfat/Makefile (revision db9aa04e4f6db42f87ad0ee34b0e97537cf6bb78) +++ uspace/srv/fs/exfat/Makefile (revision db9aa04e4f6db42f87ad0ee34b0e97537cf6bb78) @@ -0,0 +1,39 @@ +# +# Copyright (c) 2005 Martin Decky +# Copyright (c) 2007 Jakub Jermar +# 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. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# 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. +# + +USPACE_PREFIX = ../../.. +LIBS = $(LIBBLOCK_PREFIX)/libblock.a $(LIBFS_PREFIX)/libfs.a +EXTRA_CFLAGS += -I$(LIBBLOCK_PREFIX) -I$(LIBFS_PREFIX) +BINARY = exfat + +SOURCES = \ + exfat.c \ + exfat_ops.c \ + +include $(USPACE_PREFIX)/Makefile.common Index: uspace/srv/fs/exfat/exfat.c =================================================================== --- uspace/srv/fs/exfat/exfat.c (revision db9aa04e4f6db42f87ad0ee34b0e97537cf6bb78) +++ uspace/srv/fs/exfat/exfat.c (revision db9aa04e4f6db42f87ad0ee34b0e97537cf6bb78) @@ -0,0 +1,195 @@ +/* + * Copyright (c) 2006 Martin Decky + * Copyright (c) 2008 Jakub Jermar + * Copyright (c) 2011 Oleg Romanenko + * 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. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * 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. + */ + +/** @addtogroup fs + * @{ + */ + +/** + * @file exfat.c + * @brief FAT file system driver for HelenOS. + */ + +#include "exfat.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include "../../vfs/vfs.h" + +#define NAME "exfat" + +vfs_info_t exfat_vfs_info = { + .name = NAME, + .concurrent_read_write = false, + .write_retains_size = false, +}; + +fs_reg_t exfat_reg; + +/** + * This connection fibril processes VFS requests from VFS. + * + * In order to support simultaneous VFS requests, our design is as follows. + * The connection fibril accepts VFS requests from VFS. If there is only one + * instance of the fibril, VFS will need to serialize all VFS requests it sends + * to FAT. To overcome this bottleneck, VFS can send FAT the IPC_M_CONNECT_ME_TO + * call. In that case, a new connection fibril will be created, which in turn + * will accept the call. Thus, a new phone will be opened for VFS. + * + * There are few issues with this arrangement. First, VFS can run out of + * available phones. In that case, VFS can close some other phones or use one + * phone for more serialized requests. Similarily, FAT can refuse to duplicate + * the connection. VFS should then just make use of already existing phones and + * route its requests through them. To avoid paying the fibril creation price + * upon each request, FAT might want to keep the connections open after the + * request has been completed. + */ +static void exfat_connection(ipc_callid_t iid, ipc_call_t *icall) +{ + if (iid) { + /* + * This only happens for connections opened by + * IPC_M_CONNECT_ME_TO calls as opposed to callback connections + * created by IPC_M_CONNECT_TO_ME. + */ + async_answer_0(iid, EOK); + } + + dprintf(NAME ": connection opened\n"); + while (1) { + ipc_callid_t callid; + ipc_call_t call; + + callid = async_get_call(&call); + switch (IPC_GET_IMETHOD(call)) { + case IPC_M_PHONE_HUNGUP: + return; + case VFS_OUT_MOUNTED: + /* exfat_mounted(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_MOUNT: + /* exfat_mount(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_UNMOUNTED: + /* exfat_unmounted(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_UNMOUNT: + /* exfat_unmount(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_LOOKUP: + /* exfat_lookup(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_READ: + /* exfat_read(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_WRITE: + /* exfat_write(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_TRUNCATE: + /* exfat_truncate(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_STAT: + /* exfat_stat(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_CLOSE: + /* exfat_close(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_DESTROY: + /* exfat_destroy(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_OPEN_NODE: + /* exfat_open_node(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + case VFS_OUT_SYNC: + /* exfat_sync(callid, &call); */ + async_answer_0(callid, ENOTSUP); + break; + default: + async_answer_0(callid, ENOTSUP); + break; + } + } +} + +int main(int argc, char **argv) +{ + int vfs_phone; + int rc; + + printf(NAME ": HelenOS exFAT file system server\n"); +/* + rc = exfat_idx_init(); + if (rc != EOK) + goto err; +*/ + vfs_phone = service_connect_blocking(SERVICE_VFS, 0, 0); + if (vfs_phone < EOK) { + printf(NAME ": failed to connect to VFS\n"); + return -1; + } + + rc = fs_register(vfs_phone, &exfat_reg, &exfat_vfs_info, exfat_connection); + if (rc != EOK) { + /* exfat_idx_fini(); */ + goto err; + } + + printf(NAME ": Accepting connections\n"); + task_retval(0); + async_manager(); + /* not reached */ + return 0; + +err: + printf(NAME ": Failed to register file system (%d)\n", rc); + return rc; +} + + +/** + * @} + */ Index: uspace/srv/fs/exfat/exfat.h =================================================================== --- uspace/srv/fs/exfat/exfat.h (revision db9aa04e4f6db42f87ad0ee34b0e97537cf6bb78) +++ uspace/srv/fs/exfat/exfat.h (revision db9aa04e4f6db42f87ad0ee34b0e97537cf6bb78) @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2008 Jakub Jermar + * Copyright (c) 2011 Oleg Romanenko + * 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. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * 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. + */ + +/** @addtogroup fs + * @{ + */ + +#ifndef EXFAT_EXFAT_H_ +#define EXFAT_FAT_H_ + +#include +#include +#include +#include +#include +#include "../../vfs/vfs.h" + +#ifndef dprintf +#define dprintf(...) printf(__VA_ARGS__) +#endif + +#define BS_BLOCK 0 +#define BS_SIZE 512 + + + + +#endif + +/** + * @} + */ Index: uspace/srv/fs/exfat/exfat_ops.c =================================================================== --- uspace/srv/fs/exfat/exfat_ops.c (revision db9aa04e4f6db42f87ad0ee34b0e97537cf6bb78) +++ uspace/srv/fs/exfat/exfat_ops.c (revision db9aa04e4f6db42f87ad0ee34b0e97537cf6bb78) @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2008 Jakub Jermar + * Copyright (c) 2011 Oleg Romanenko + * 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. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * 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. + */ + +/** @addtogroup fs + * @{ + */ + +/** + * @file exfat_ops.c + * @brief Implementation of VFS operations for the exFAT file system server. + */ + +#include "exfat.h" +#include "../../vfs/vfs.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + + +/** + * @} + */