OrionLibC

#include <stddef.h>
#include <sys/syscall.h>
#include <sys/types.h>

/* Get the current process' user id */
uid_t
getuid(void)
{
	int ret;
	asm volatile("int $0x80" : "=a" (ret) : "0" (SYSCALL_GETUID),
	             "c" (0), "S" (NULL));
	return ret;
}

/* Get the current process' effective user id */
uid_t
geteuid(void)
{
	int ret;
	asm volatile("int $0x80" : "=a" (ret) : "0" (SYSCALL_GETEUID),
	             "c" (0), "S" (NULL));
	return ret;
}

/* Get the current process' group id */
gid_t
getgid(void)
{
	int ret;
	asm volatile("int $0x80" : "=a" (ret) : "0" (SYSCALL_GETGID),
	             "c" (0), "S" (NULL));
	return ret;
}

/* Get the current process' effective group id */
gid_t
getegid(void)
{
	int ret;
	asm volatile("int $0x80" : "=a" (ret) : "0" (SYSCALL_GETEGID),
	             "c" (0), "S" (NULL));
	return ret;
}