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Top Forums Programming implicit declaration of function 'reboot' Post 302274237 by otheus on Wednesday 7th of January 2009 05:07:31 AM
Old 01-07-2009
Nothing is wrong. Your compilers are trying to "help" you by warning you of using function calls that have not properly been defined. Apparently, the linux/reboot.h header file doesn't include a function definition for reboot. You can fix this with:
Code:
#include <unistd.h>
#include <linux/reboot.h>
int reboot(int);
int restart(unsigned int delay)
{
  sleep(delay);
  return reboot(LINUX_REBOOT_CMD_RESTART);
}

 

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reboot(3C)						   Standard C Library Functions 						reboot(3C)

NAME
reboot - reboot system or halt processor SYNOPSIS
#include <sys/reboot.h> int reboot(int howto, char *bootargs); DESCRIPTION
The reboot() function reboots the system. The howto argument specifies the behavior of the system while rebooting and is a mask con- structed by a bitwise-inclusive-OR of flags from the following list: RB_AUTOBOOT The machine is rebooted from the root filesystem on the default boot device. This is the default behavior. See boot(1M) and kernel(1M). RB_HALT The processor is simply halted; no reboot takes place. This option should be used with caution. RB_ASKNAME Interpreted by the bootstrap program and kernel, causing the user to be asked for pathnames during the bootstrap. RB_DUMP The system is forced to panic immediately without any further processing and a crash dump is written to the dump device (see dumpadm(1M)) before rebooting. Any other howto argument causes the kernel file to boot. The interpretation of the bootargs argument is platform-dependent. RETURN VALUES
Upon successful completion, reboot() never returns. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
The reboot() function will fail if: EPERM The {PRIV_SYS_CONFIG} privilege is not asserted in the effective set of the calling process. SEE ALSO
Intro(1M), boot(1M), dumpadm(1M), halt(1M), init(1M), kernel(1M), reboot(1M), uadmin(2) SunOS 5.11 22 Mar 2004 reboot(3C)
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