| /**************************************************************************** |
| * drivers/note/notectl_driver.c |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| * |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <sys/types.h> |
| #include <errno.h> |
| |
| #include <nuttx/fs/fs.h> |
| #include <nuttx/note/notectl_driver.h> |
| |
| /**************************************************************************** |
| * Private Types |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Private Function Prototypes |
| ****************************************************************************/ |
| |
| static int notectl_ioctl(struct file *filep, int cmd, unsigned long arg); |
| |
| /**************************************************************************** |
| * Private Data |
| ****************************************************************************/ |
| |
| static const struct file_operations g_notectl_fops = |
| { |
| NULL, /* open */ |
| NULL, /* close */ |
| NULL, /* read */ |
| NULL, /* write */ |
| NULL, /* seek */ |
| notectl_ioctl, /* ioctl */ |
| }; |
| |
| /**************************************************************************** |
| * Private Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: notectl_ioctl |
| ****************************************************************************/ |
| |
| static int notectl_ioctl(struct file *filep, int cmd, unsigned long arg) |
| { |
| int ret = -ENOSYS; |
| |
| /* Handle the ioctl commands */ |
| |
| switch (cmd) |
| { |
| /* NOTECTL_GETMODE |
| * - Get note filter mode |
| * Argument: A writable pointer to struct note_filter_mode_s |
| */ |
| |
| case NOTECTL_GETMODE: |
| { |
| struct note_filter_mode_s *mode = (struct note_filter_mode_s *)arg; |
| |
| if (mode == NULL) |
| { |
| ret = -EINVAL; |
| } |
| else |
| { |
| sched_note_filter_mode(mode, NULL); |
| ret = OK; |
| } |
| } |
| break; |
| |
| /* NOTECTL_SETMODE |
| * - Set note filter mode |
| * Argument: A read-only pointer to struct note_filter_mode_s |
| */ |
| |
| case NOTECTL_SETMODE: |
| { |
| struct note_filter_mode_s *mode = (struct note_filter_mode_s *)arg; |
| |
| if (mode == NULL) |
| { |
| ret = -EINVAL; |
| } |
| else |
| { |
| sched_note_filter_mode(NULL, mode); |
| ret = OK; |
| } |
| } |
| break; |
| |
| #ifdef CONFIG_SCHED_INSTRUMENTATION_SYSCALL |
| /* NOTECTL_GETSYSCALLFILTER |
| * - Get syscall filter setting |
| * Argument: A writable pointer to struct note_filter_syscall_s |
| */ |
| |
| case NOTECTL_GETSYSCALLFILTER: |
| { |
| struct note_filter_syscall_s *filter; |
| filter = (struct note_filter_syscall_s *)arg; |
| |
| if (filter == NULL) |
| { |
| ret = -EINVAL; |
| } |
| else |
| { |
| sched_note_filter_syscall(filter, NULL); |
| ret = OK; |
| } |
| } |
| break; |
| |
| /* NOTECTL_SETSYSCALLFILTER |
| * - Set syscall filter setting |
| * Argument: A read-only pointer to struct note_filter_syscall_s |
| */ |
| |
| case NOTECTL_SETSYSCALLFILTER: |
| { |
| struct note_filter_syscall_s *filter; |
| filter = (struct note_filter_syscall_s *)arg; |
| |
| if (filter == NULL) |
| { |
| ret = -EINVAL; |
| } |
| else |
| { |
| sched_note_filter_syscall(NULL, filter); |
| ret = OK; |
| } |
| } |
| break; |
| #endif |
| |
| #ifdef CONFIG_SCHED_INSTRUMENTATION_IRQHANDLER |
| /* NOTECTL_GETIRQFILTER |
| * - Get IRQ filter setting |
| * Argument: A writable pointer to struct note_filter_irq_s |
| */ |
| |
| case NOTECTL_GETIRQFILTER: |
| { |
| struct note_filter_irq_s *filter; |
| filter = (struct note_filter_irq_s *)arg; |
| |
| if (filter == NULL) |
| { |
| ret = -EINVAL; |
| } |
| else |
| { |
| sched_note_filter_irq(filter, NULL); |
| ret = OK; |
| } |
| } |
| break; |
| |
| /* NOTECTL_SETIRQFILTER |
| * - Set IRQ filter setting |
| * Argument: A read-only pointer to struct |
| * note_filter_irq_s |
| */ |
| |
| case NOTECTL_SETIRQFILTER: |
| { |
| struct note_filter_irq_s *filter; |
| filter = (struct note_filter_irq_s *)arg; |
| |
| if (filter == NULL) |
| { |
| ret = -EINVAL; |
| } |
| else |
| { |
| sched_note_filter_irq(NULL, filter); |
| ret = OK; |
| } |
| } |
| break; |
| #endif |
| |
| default: |
| break; |
| } |
| |
| return ret; |
| } |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: notectl_register |
| * |
| * Description: |
| * Register a driver at /dev/notectl that can be used by an application to |
| * control the note filter. |
| * |
| * Input Parameters: |
| * None. |
| * |
| * Returned Value: |
| * Zero on success. A negated errno value is returned on a failure. |
| * |
| ****************************************************************************/ |
| |
| int notectl_register(void) |
| { |
| return register_driver("/dev/notectl", &g_notectl_fops, 0666, NULL); |
| } |