/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <../boot/boot.h> /*intplumb(char *dir, char *dest, int *efd, char *here){	char buf[128];	char name[128];	int n; 	sprint(name, "%s/clone", dir);	efd[0] = open(name, ORDWR);	if(efd[0] < 0)		return -1;	n = read(efd[0], buf, sizeof(buf)-1);	if(n < 0){		close(efd[0]);		return -1;	}	buf[n] = 0;	sprint(name, "%s/%s/data", dir, buf);	if(here){		sprint(buf, "announce %s", here);		if(sendmsg(efd[0], buf) < 0){			close(efd[0]);			return -1;		}	}	sprint(buf, "connect %s", dest);	if(sendmsg(efd[0], buf) < 0){		close(efd[0]);		return -1;	}	efd[1] = open(name, ORDWR);	if(efd[1] < 0){		close(efd[0]);		return -1;	}	return efd[1];} intsendmsg(int fd, char *msg){	int n; 	n = strlen(msg);	if(write(fd, msg, n) != n)		return -1;	return 0;} */ voidwarning(char *s){	char buf[ERRMAX]; 	buf[0] = '\0';	errstr(buf, sizeof buf);	fprint(2, "boot: %s: %s\n", s, buf);} voidfatal(char *s){	char *msg;	char buf[ERRMAX]; 	buf[0] = '\0';	errstr(buf, sizeof buf);	msg = smprint("%s: %s", s, buf);	fprint(2, "boot: %s\n", msg);	exits(msg);			/* this will trigger a panic */} intreadfile(char *name, char *buf, int len){	int f, n; 	buf[0] = 0;	f = open(name, OREAD);	if(f < 0)		return -1;	n = read(f, buf, len-1);	if(n >= 0)		buf[n] = 0;	close(f);	return 0;} intwritefile(char *name, char *buf, int len){	int f, n; 	f = open(name, OWRITE);	if(f < 0)		return -1;	n = write(f, buf, len);	close(f);	return (n != len) ? -1 : 0;} voidsetenv(char *name, char *val){	int f;	char ename[64]; 	snprint(ename, sizeof ename, "#e/%s", name);	f = create(ename, 1, 0666);	if(f < 0){		fprint(2, "create %s: %r\n", ename);		return;	}	write(f, val, strlen(val));	close(f);} voidsrvcreate(char *name, int fd){	char *srvname;	int f;	char buf[64]; 	srvname = strrchr(name, '/');	if(srvname)		srvname++;	else		srvname = name; 	snprint(buf, sizeof buf, "#s/%s", srvname);	f = create(buf, 1, 0666);	if(f < 0)		fatal(buf);	sprint(buf, "%d", fd);	if(write(f, buf, strlen(buf)) != strlen(buf))		fatal("write");	close(f);} voidcatchint(void *a, char *note){	USED(a);	if(strcmp(note, "alarm") == 0)		noted(NCONT);	noted(NDFLT);} intoutin(char *prompt, char *def, int len){	int n;	char buf[256]; 	if(len >= sizeof buf)		len = sizeof(buf)-1; 	if(cpuflag){		notify(catchint);		alarm(15*1000);	}	print("%s[%s]: ", prompt, *def ? def : "no default");	memset(buf, 0, sizeof buf);	n = read(0, buf, len);	if(cpuflag){		alarm(0);		notify(0);	} 	if(n < 0)		return 1;	if(n > 1){		buf[n-1] = 0;		strcpy(def, buf);	}	return n;}