audit : audit_lost=9 audit_rate_limit=5 audit_backlog_limit=64
时间: 2024-04-03 09:36:46 浏览: 205
这是一条关于系统审计日志(audit)的信息。其中,audit_lost=9 表示在系统审计日志中有 9 条日志被丢失;audit_rate_limit=5 表示在每秒钟最多可以记录 5 条审计日志,如果超过这个限制,就会被丢弃;audit_backlog_limit=64 表示审计日志缓冲区的大小为 64。当审计日志的数量达到这个上限时,新的审计日志将被丢弃。这些参数可以帮助系统管理员监控系统的安全性,以及检测潜在的安全问题。
相关问题
安卓APP访问CAN有如下报错05-16 18:09:54.015 8022 8022 D can_test: nCanFd = 67 05-16 18:09:54.015 8022 8022 D can_test: Send can_id 05-16 18:09:54.013 8022 8022 I com.bin.cantest: type=1400 audit(0.0:444): avc: denied { ioctl } for path="socket:[114169]" dev="sockfs" ino=114169 ioctlcmd=0x8933 scontext=u:r:system_app:s0 tcontext=u:r:system_app:s0 tclass=can_socket permissive=1 05-16 18:09:54.015 8022 8022 D can_test: Send Error frame[0] 05-16 18:09:54.013 8022 8022 I com.bin.cantest: type=1400 audit(0.0:445): avc: denied { bind } for scontext=u:r:system_app:s0 tcontext=u:r:system_app:s0 tclass=can_socket permissive=1 05-16 18:09:54.013 8022 8022 I com.bin.cantest: type=1400 audit(0.0:446): avc: denied { write } for path="socket:[114169]" dev="sockfs" ino=114169 scontext=u:r:system_app:s0 tcontext=u:r:system_app:s0 tclass=can_socket permissive=1 05-16 18:09:54.020 0 0 W audit : audit_lost=15 audit_rate_limit=5 audit_backlog_limit=64 05-16 18:09:54.020 0 0 E audit : rate limit exceeded 05-16 18:09:54.060 305 388 W APM::AudioPolicyEngine: getDevicesForStrategy() unknown strategy: -1 05-16 18:09:54.060 459 477 I system_server: oneway function results will be dropped but finished with status OK and parcel size 4 05-16 18:09:54.150 459 1215 E TaskPersister: File error accessing recents directory (directory doesn't exist?). 05-16 18:09:56.930 274 401 D AudioHardwareTiny: do_out_standby,out = 0xea043b70,device = 0x2 05-16 18:09:56.932 274 401 D alsa_route: route_set_controls() set route 24 05-16 18:09:56.941 274 401 D AudioHardwareTiny: close device 05-16 18:09:56.943 459 477 I system_server: oneway function results will be dropped but finished with status OK and parcel size 4 05-16 18:10:00.010 620 620 D KeyguardClockSwitch: Updating clock:
这个报错信息表明应用程序被拒绝了访问CAN总线的权限。在Android系统中,访问CAN总线需要特定的权限,而且在某些情况下需要root权限才能访问。
要解决这个问题,可以尝试以下步骤:
1. 确保应用程序已经被授权访问CAN总线的权限。可以在应用程序的AndroidManifest.xml文件中添加相应的权限声明,例如:
```xml
<uses-permission android:name="android.permission.CAN_BUS"/>
```
2. 确保设备已经被授权访问CAN总线。在一些设备上,访问CAN总线需要root权限。可以使用root权限管理工具授权应用程序访问CAN总线。
3. 如果应用程序仍然无法访问CAN总线,可以尝试修改安全策略。在安卓系统中,SELinux是一个重要的安全机制,它限制了进程和应用程序的权限。如果SELinux设置不正确,可能会导致应用程序无法访问CAN总线。可以使用sepolicy或chcon工具修改策略,以允许应用程序访问CAN总线。
需要注意的是,修改安全策略可能会对系统安全造成影响,因此需要谨慎操作。同时,对于一些较为敏感的权限,例如访问CAN总线,需要确保应用程序不会滥用这些权限。
下面代码怎么优化 def update_running_state_to_restore(self): # Get audits that should be stashed. need_stash_audits = self.get_need_rollback_audits() need_suspend_audits = [] need_rollback_audits = [] for audit in need_stash_audits: self.record_audit_init_state(audit) if audit.goal.name in ['saving_energy', 'power_limit']: need_rollback_audits.append(audit) else: need_suspend_audits.append(audit) LOG.info("Audits need suspend are: %s", need_suspend_audits) LOG.info("Audits need rollback are: %s", need_rollback_audits) # The drs audits should be stopped in a timely manner, # so need to handle the drs audits first. for audit in need_suspend_audits: if audit.state == objects.audit.State.ONGOING: LOG.info("Suspend non-dpm audit: %s", audit.uuid) audit.state = objects.audit.State.SUSPENDED audit.save() for audit in need_rollback_audits: LOG.info("Begin to roll back audit: %s", audit.uuid) self.dc_client.rollback_audit(self.context, audit.uuid) # Confirm that the audit is rolled back completely self.confirm_audit_rolled_back(audit) disabled_nodes = self.get_watcher_disabled_nodes() LOG.info("Audits have all been updated, disabled nodes by watcher: %s", disabled_nodes) self.running_state.stash_audits = self.stash_audits self.running_state.watcher_disabled_nodes = disabled_nodes
这段代码可以进行一些优化。首先,可以使用列表推导式来简化对need_stash_audits的计算。
```python
need_stash_audits = [audit for audit in self.get_need_rollback_audits()]
```
接下来,可以使用两个列表推导式来替代for循环和if语句,将需要回滚和需要暂停的审计分别提取出来。
```python
need_rollback_audits = [audit for audit in need_stash_audits if audit.goal.name in ['saving_energy', 'power_limit']]
need_suspend_audits = [audit for audit in need_stash_audits if audit not in need_rollback_audits]
```
然后,可以使用列表推导式和条件表达式来简化循环中的if语句。这样可以减少代码行数并提高可读性。
```python
for audit in need_suspend_audits:
LOG.info("Suspend non-dpm audit: %s", audit.uuid)
audit.state = objects.audit.State.SUSPENDED if audit.state == objects.audit.State.ONGOING else audit.state
audit.save()
for audit in need_rollback_audits:
LOG.info("Begin to roll back audit: %s", audit.uuid)
self.dc_client.rollback_audit(self.context, audit.uuid)
self.confirm_audit_rolled_back(audit)
```
最后,注意到在代码的最后几行中,通过赋值操作更新了`self.running_state`的两个属性。可以将这两个属性的赋值操作放在代码的开头,以便更早地更新状态。
```python
self.running_state.stash_audits = self.stash_audits
self.running_state.watcher_disabled_nodes = self.get_watcher_disabled_nodes()
LOG.info("Audits have all been updated, disabled nodes by watcher: %s", self.running_state.watcher_disabled_nodes)
```
通过这些优化,可以使代码更简洁、可读性更高,并且提高执行效率。
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