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CPU_REBOOT(9) Kernel Developer's Manual CPU_REBOOT(9) NAME cpu_reboot - halt or reboot the system SYNOPSIS #include <sys/reboot.h> void cpu_reboot(int howto, char *bootstr); DESCRIPTION The cpu_reboot() function handles final system shutdown, and either halts or reboots the system. The exact action to be taken is determined by the flags passed in howto and by whether or not the system has finished autoconfiguration. If the system has finished autoconfiguration, cpu_reboot() does the following: 1. Sets the boothowto system variable (see boothowto(9)) from the howto argument. 2. If this is the first invocation of cpu_reboot() and the RB_NOSYNC flag is not set in howto, syncs and unmounts the system disks by calling vfs_shutdown(9) and sets the time of day clock by calling resettodr(9). 3. Disables interrupts. 4. If rebooting after a crash (i.e., if RB_DUMP is set in howto, but RB_HALT is not), saves a system crash dump. 5. Runs any shutdown hooks by calling pmf_system_shutdown(9). 6. Prints a message indicating that the system is about to be halted or rebooted. 7. If RB_HALT is set in howto, halts the system. Otherwise, reboots the system. If the system has not finished autoconfiguration, cpu_reboot() runs any shutdown hooks by calling pmf_system_shutdown(9), prints a message, and halts the system. If RB_STRING is set in howto, then the parameter bootstr is passed to the system boot loader on some ports. SEE ALSO boothowto(9), dumpsys(9), pmf_system_shutdown(9), resettodr(9), vfs_shutdown(9) NetBSD 8.0 February 11, 2010 NetBSD 8.0