/* * Copyright (c) 2012 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. */ /** @addtogroup kernel_generic_ipc * @{ */ /** @file */ #include <ipc/sysipc_ops.h> #include <ipc/ipc.h> #include <mm/as.h> #include <synch/spinlock.h> #include <proc/task.h> #include <syscall/copy.h> #include <abi/errno.h> #include <arch.h> static errno_t request_preprocess(call_t *call, phone_t *phone) { size_t size = as_area_get_size(ipc_get_arg1(&call->data)); if (!size) return EPERM; ipc_set_arg2(&call->data, size); return EOK; } static errno_t answer_preprocess(call_t *answer, ipc_data_t *olddata) { errno_t rc = EOK; if (!ipc_get_retval(&answer->data)) { /* Accepted, handle as_area receipt */ irq_spinlock_lock(&answer->sender->lock, true); as_t *as = answer->sender->as; irq_spinlock_unlock(&answer->sender->lock, true); uintptr_t dst_base = (uintptr_t) -1; rc = as_area_share(as, ipc_get_arg1(olddata), ipc_get_arg2(olddata), AS, ipc_get_arg3(olddata), &dst_base, ipc_get_arg1(&answer->data)); if (rc == EOK) { rc = copy_to_uspace(ipc_get_arg2(&answer->data), &dst_base, sizeof(dst_base)); } ipc_set_retval(&answer->data, rc); } return rc; } sysipc_ops_t ipc_m_share_out_ops = { .request_preprocess = request_preprocess, .request_forget = null_request_forget, .request_process = null_request_process, .answer_cleanup = null_answer_cleanup, .answer_preprocess = answer_preprocess, .answer_process = null_answer_process, }; /** @} */