error.c

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

#include <u.h>
#include <libc.h>
#include <thread.h>
#include <sunrpc.h>

static struct {
	SunStatus status;
	char *msg;
} tab[] = {
	SunProgUnavail,	"program unavailable",
	SunProgMismatch,	"program mismatch",
	SunProcUnavail,	"procedure unavailable",
	SunGarbageArgs,	"garbage args",
	SunSystemErr,		"system error",
	SunRpcMismatch,	"rpc mismatch",
	SunAuthBadCred,	"bad auth cred",
	SunAuthRejectedCred,	"rejected auth cred",
	SunAuthBadVerf,	"bad auth verf",
	SunAuthRejectedVerf,	"rejected auth verf",
	SunAuthTooWeak,	"auth too weak",
	SunAuthInvalidResp,	"invalid auth response",
	SunAuthFailed,		"auth failed",
};

void
sunErrstr(SunStatus status)
{
	int i;

	for(i=0; i<nelem(tab); i++){
		if(tab[i].status == status){
			werrstr(tab[i].msg);
			return;
		}
	}
	werrstr("unknown sun error %d", (int)status);
}