/*  * 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 <bio.h>#include "snap.h" voidusage(void){	fprint(2, "usage: %s [-o snapfile] pid...\n", argv0);	exits("usage");} voidmain(int argc, char **argv){	char *user, *sys, *arch, *term, *ofile;	int i;	long pid, me;	Biobuf *b;	Dir *d;	Proc *p; 	ofile = "/fd/1";	ARGBEGIN{	case 'o':		ofile = ARGF();		break;	default:		usage();	}ARGEND; 	if(argc < 1)		usage(); 	/* get kernel compilation time */	if((d = dirstat("#/")) == nil) {		fprint(2, "cannot stat #/ ???\n");		exits("stat");	} 	if((b = Bopen(ofile, OWRITE)) == nil) {		fprint(2, "cannot write to \"%s\"\n", ofile);		exits("Bopen");	} 	if((user = getuser()) == nil)		user = "gre";	if((sys = sysname()) == nil)		sys = "gnot";	if((arch = getenv("cputype")) == nil)		arch = "unknown";	if((term = getenv("terminal")) == nil)		term = "unknown terminal type"; 	Bprint(b, "process snapshot %ld %s@%s %s %ld \"%s\"\n",		time(0), user, sys, arch, d->mtime, term);	me = getpid();	for(i=0; i<argc; i++) {		if((pid = atol(argv[i])) == me)			fprint(2, "warning: will not snapshot self\n");		else if(p = snap(pid, 1))			writesnap(b, p);	}	exits(0);}