/*  * 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. */ /* clog - log console */#include <u.h>#include <libc.h>#include <bio.h> char *argv0; intopenlog(char *name){	int fd; 	fd = open(name, OWRITE);	if(fd < 0)		fd = create(name, OWRITE, DMAPPEND|0666);	if(fd < 0){		fprint(2, "%s: can't open %s: %r\n", argv0, name);		return -1;	}	seek(fd, 0, 2);	return fd;} voidmain(int argc, char **argv){	Biobuf in;	int fd;	char *p, *t;	char buf[Bsize]; 	argv0 = argv[0];	if(argc < 3){		fprint(2, "usage: %s console logfile \n", argv0);		exits("usage");	} 	fd = open(argv[1], OREAD);	if(fd < 0){		fprint(2, "%s: can't open %s: %r\n", argv0, argv[1]);		exits("open");	}	Binit(&in, fd, OREAD); 	fd = openlog(argv[2]); 	for(;;){		if(p = Brdline(&in, '\n')){			p[Blinelen(&in)-1] = 0;			t = ctime(time(0));			t[19] = 0;			while(fprint(fd, "%s: %s\n", t, p) < 0) {				close(fd);				sleep(500);				fd = openlog(argv[2]);			}		} else if(Blinelen(&in) == 0)	/* true eof or error */			break;		/* discard partial buffer? perhaps due to very long line */		else if (Bread(&in, buf, sizeof buf) < 0)			break;	}	exits(0);}