函数逻辑报告 |
Source Code:kernel\reboot.c |
Create Date:2022-07-27 10:33:37 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
首页 | 函数Tree |
注解内核,赢得工具 | 下载SCCT | English |
函数名称:Reboot system call: for obvious reasons only root may call it,* and even root needs to set up some magic numbers in the registers* so that some mistake won't make this reboot the whole machine.* You can also set the meaning of the ctrl-alt-del-key here.
函数原型:SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd, void __user *, arg)
返回类型:
参数:无
315 | ret等于0 |
318 | 如果非ns_capable(user_ns, Allow use of reboot() )则返回:负EPERM |
322 | 如果magic1不等于Magic values required to use _reboot() system call.或magic2不等于LINUX_REBOOT_MAGIC2且magic2不等于LINUX_REBOOT_MAGIC2A且magic2不等于LINUX_REBOOT_MAGIC2B且magic2不等于LINUX_REBOOT_MAGIC2C则返回:负EINVAL |
334 | ret等于reboot_pid_ns(pid_ns, cmd) |
344 | mutex_lock( & system_transition_mutex) |
348 | 退出 |
350 | 当:cmd恒等于LINUX_REBOOT_CMD_CAD_ON |
354 | 当:cmd恒等于LINUX_REBOOT_CMD_CAD_OFF |
358 | 当:cmd恒等于LINUX_REBOOT_CMD_HALT |
360 | do_exit(0) |
363 | 当:cmd恒等于LINUX_REBOOT_CMD_POWER_OFF |
364 | kernel_power_off - power_off the system* Shutdown everything and perform a clean system power_off. |
365 | do_exit(0) |
366 | 退出 |
368 | 当:cmd恒等于LINUX_REBOOT_CMD_RESTART2 |
380 | 当:cmd恒等于LINUX_REBOOT_CMD_KEXEC |
381 | ret等于Move into place and start executing a preloaded standalone* executable. If nothing was preloaded return an error. |
382 | 退出 |
391 | 默认 |
395 | mutex_unlock( & system_transition_mutex) |
396 | 返回:ret |
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