common.h

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

/* common.h  -  Common functions */

# define MSDOS_FAT12 4084 /* maximum number of clusters in a 12 bit FAT */

#include "version.h"

#ifndef _COMMON_H
#define _COMMON_H

//void die(char *msg,...) __attribute((noreturn));
__declspec(noreturn) void die(char *msg,...);

/* Displays a prinf-style message and terminates the program. */

//void pdie(char *msg,...) __attribute((noreturn));
__declspec(noreturn) void pdie(char *msg,...);

/* Like die, but appends an error message according to the state of errno. */

void *alloc(int size);

/* mallocs SIZE bytes and returns a pointer to the data. Terminates the program
   if malloc fails. */

void *qalloc(void **root,int size);

/* Like alloc, but registers the data area in a list described by ROOT. */

void qfree(void **root);

/* Deallocates all qalloc'ed data areas described by ROOT. */

//int min(int a,int b);

/* Returns the smaller integer value of a and b. */

char get_key(char *valid,char *prompt);

/* Displays PROMPT and waits for user input. Only characters in VALID are
   accepted. Terminates the program on EOF. Returns the character. */

#endif