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dd9f1fc1a4
* 添加sysfs * 注册sysfs * 添加sysfs相关 * 添加rust-anlyzer辅助配置 * 将设备与sysfs相关联 * 添加单独的文件管理sysfs下的文件夹
55 lines
1.9 KiB
Rust
55 lines
1.9 KiB
Rust
use super::{LockedSysFSInode, SYS_BUS_INODE};
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use crate::{filesystem::vfs::IndexNode, kdebug, syscall::SystemError};
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use alloc::sync::Arc;
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/// @brief: 注册bus，在sys/bus下生成文件夹
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/// @parameter bus_name: 总线文件夹名
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/// @return: 操作成功，返回inode，操作失败，返回错误码
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#[inline]
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#[allow(dead_code)]
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pub fn bus_register(bus_name: &str) -> Result<Arc<dyn IndexNode>, SystemError> {
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let binding: Arc<dyn IndexNode> = SYS_BUS_INODE();
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kdebug!("Before bus_register: ls /sys/bus/: {:?}", binding.list());
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binding
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.as_any_ref()
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.downcast_ref::<LockedSysFSInode>()
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.ok_or(SystemError::E2BIG)
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.unwrap()
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.add_dir(bus_name)
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}
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/// @brief: 注销bus，在sys/bus删除文件夹
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/// @parameter bus_name: 总线文件夹名
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/// @return: 操作成功，返回()，操作失败，返回错误码
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#[inline]
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#[allow(dead_code)]
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pub fn bus_unregister(bus_name: &str) -> Result<(), SystemError> {
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let binding: Arc<dyn IndexNode> = SYS_BUS_INODE();
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binding
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.as_any_ref()
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.downcast_ref::<LockedSysFSInode>()
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.ok_or(SystemError::E2BIG)
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.unwrap()
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.remove(bus_name)
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}
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/// @brief: 在相应总线文件夹下生成devices和drivers文件夹
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/// @parameter inode: 总线文件夹inode
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/// @return: 操作成功，返回devices inode和drivers inode，操作失败，返回错误码
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#[inline]
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#[allow(dead_code)]
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pub fn bus_init(
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inode: &Arc<dyn IndexNode>,
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) -> Result<(Arc<dyn IndexNode>, Arc<dyn IndexNode>), SystemError> {
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match inode.as_any_ref().downcast_ref::<LockedSysFSInode>() {
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Some(lock_bus) => match lock_bus.add_dir("devices") {
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Ok(devices) => match lock_bus.add_dir("drivers") {
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Ok(drivers) => Ok((devices, drivers)),
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Err(err) => Err(err),
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},
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Err(err) => Err(err),
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},
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None => Err(SystemError::E2BIG),
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}
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}
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