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clinuxgccsystem-callsllvm-gcc

gcc and llvm linux shutdown function from c code

Linux x86-64 compiling and statically linking with gcc I have:

#include <sys/reboot.h>

if (str[0] == 'r')
  reboot(0x1234567);

but I can't seem to find the equivalent function call for shutdown. I'd also like to know the llvm function if different.

Solution

  • From sys/reboot.h :

    /* Perform a hard reset now.  */
#define RB_AUTOBOOT     0x01234567

[...]

/* Stop system and switch power off if possible.  */
#define RB_POWER_OFF    0x4321fedc

    So reboot(0x4321fedc); or reboot(RB_POWER_OFF); should work.