136 lines
3.6 KiB
C
136 lines
3.6 KiB
C
/*
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* Copyright (c) 2022 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "zephyr/kernel.h"
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#include <stdbool.h>
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#include <zephyr/rtio/rtio.h>
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#include <zephyr/syscall_handler.h>
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/**
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* Verify each SQE type operation and its fields ensuring
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* the iodev is a valid accessible k_object (if given) and
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* the buffer pointers are valid accessible memory by the calling
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* thread.
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*
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* Each op code that is acceptable from user mode must also be validated.
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*/
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static inline bool rtio_vrfy_sqe(struct rtio_sqe *sqe)
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{
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if (sqe->iodev != NULL && Z_SYSCALL_OBJ(sqe->iodev, K_OBJ_RTIO_IODEV)) {
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return false;
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}
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bool valid_sqe = true;
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switch (sqe->op) {
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case RTIO_OP_NOP:
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break;
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case RTIO_OP_TX:
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valid_sqe &= Z_SYSCALL_MEMORY(sqe->buf, sqe->buf_len, false);
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break;
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case RTIO_OP_RX:
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if ((sqe->flags & RTIO_SQE_MEMPOOL_BUFFER) == 0) {
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valid_sqe &= Z_SYSCALL_MEMORY(sqe->buf, sqe->buf_len, true);
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}
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break;
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case RTIO_OP_TINY_TX:
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break;
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case RTIO_OP_TXRX:
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valid_sqe &= Z_SYSCALL_MEMORY(sqe->tx_buf, sqe->txrx_buf_len, true);
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valid_sqe &= Z_SYSCALL_MEMORY(sqe->rx_buf, sqe->txrx_buf_len, true);
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break;
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default:
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/* RTIO OP must be known and allowable from user mode
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* otherwise it is invalid
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*/
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valid_sqe = false;
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}
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return valid_sqe;
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}
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static inline void z_vrfy_rtio_release_buffer(struct rtio *r, void *buff, uint32_t buff_len)
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{
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Z_OOPS(Z_SYSCALL_OBJ(r, K_OBJ_RTIO));
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z_impl_rtio_release_buffer(r, buff, buff_len);
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}
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#include <syscalls/rtio_release_buffer_mrsh.c>
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static inline int z_vrfy_rtio_cqe_get_mempool_buffer(const struct rtio *r, struct rtio_cqe *cqe,
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uint8_t **buff, uint32_t *buff_len)
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{
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Z_OOPS(Z_SYSCALL_OBJ(r, K_OBJ_RTIO));
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Z_OOPS(Z_SYSCALL_MEMORY_READ(cqe, sizeof(struct rtio_cqe)));
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Z_OOPS(Z_SYSCALL_MEMORY_READ(buff, sizeof(void *)));
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Z_OOPS(Z_SYSCALL_MEMORY_READ(buff_len, sizeof(uint32_t)));
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return z_impl_rtio_cqe_get_mempool_buffer(r, cqe, buff, buff_len);
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}
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#include <syscalls/rtio_cqe_get_mempool_buffer_mrsh.c>
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static inline int z_vrfy_rtio_sqe_cancel(struct rtio_sqe *sqe)
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{
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return z_impl_rtio_sqe_cancel(sqe);
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}
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#include <syscalls/rtio_sqe_cancel_mrsh.c>
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static inline int z_vrfy_rtio_sqe_copy_in_get_handles(struct rtio *r, const struct rtio_sqe *sqes,
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struct rtio_sqe **handle, size_t sqe_count)
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{
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Z_OOPS(Z_SYSCALL_OBJ(r, K_OBJ_RTIO));
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Z_OOPS(Z_SYSCALL_MEMORY_ARRAY_READ(sqes, sqe_count, sizeof(struct rtio_sqe)));
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struct rtio_sqe *sqe;
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uint32_t acquirable = rtio_sqe_acquirable(r);
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if (acquirable < sqe_count) {
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return -ENOMEM;
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}
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for (int i = 0; i < sqe_count; i++) {
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sqe = rtio_sqe_acquire(r);
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__ASSERT_NO_MSG(sqe != NULL);
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if (handle != NULL && i == 0) {
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*handle = sqe;
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}
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*sqe = sqes[i];
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if (!rtio_vrfy_sqe(sqe)) {
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rtio_sqe_drop_all(r);
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Z_OOPS(true);
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}
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}
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/* Already copied *and* verified, no need to redo */
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return z_impl_rtio_sqe_copy_in_get_handles(r, NULL, NULL, 0);
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}
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#include <syscalls/rtio_sqe_copy_in_get_handles_mrsh.c>
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static inline int z_vrfy_rtio_cqe_copy_out(struct rtio *r,
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struct rtio_cqe *cqes,
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size_t cqe_count,
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k_timeout_t timeout)
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{
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Z_OOPS(Z_SYSCALL_OBJ(r, K_OBJ_RTIO));
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Z_OOPS(Z_SYSCALL_MEMORY_ARRAY_WRITE(cqes, cqe_count, sizeof(struct rtio_cqe)));
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return z_impl_rtio_cqe_copy_out(r, cqes, cqe_count, timeout);
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}
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#include <syscalls/rtio_cqe_copy_out_mrsh.c>
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static inline int z_vrfy_rtio_submit(struct rtio *r, uint32_t wait_count)
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{
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Z_OOPS(Z_SYSCALL_OBJ(r, K_OBJ_RTIO));
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#ifdef CONFIG_RTIO_SUBMIT_SEM
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Z_OOPS(Z_SYSCALL_OBJ(r->submit_sem, K_OBJ_SEM));
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#endif
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return z_impl_rtio_submit(r, wait_count);
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}
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#include <syscalls/rtio_submit_mrsh.c>
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