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#include <u.h>
#include <libc.h>
#include <fcall.h>
#define Extern
#include "exportfs.h"
int srvfd = -1;
int readonly;
void
usage(void)
{
fprint(2, "usage: %s [-dsR] [-f dbgfile] [-m msize] [-r root] "
"[-S srvfile] [-P exclusion-file]\n", argv0);
fatal("usage");
}
void
main(int argc, char **argv)
{
char *dbfile, *srv, *srvfdfile;
int n;
dbfile = "/tmp/exportdb";
srv = nil;
srvfd = -1;
srvfdfile = nil;
ARGBEGIN{
case 'd':
dbg++;
break;
case 'f':
dbfile = EARGF(usage());
break;
case 'm':
messagesize = strtoul(EARGF(usage()), nil, 0);
break;
case 'r':
srv = EARGF(usage());
break;
case 's':
srv = "/";
break;
case 'F':
/* accepted but ignored, for backwards compatibility */
break;
case 'P':
patternfile = EARGF(usage());
break;
case 'R':
readonly = 1;
break;
case 'S':
if(srvfdfile != nil)
usage();
srvfdfile = EARGF(usage());
break;
default:
usage();
}ARGEND
USED(argc, argv);
if(srvfdfile != nil){
if(srv != nil){
fprint(2, "exportfs: -S cannot be used with -r or -s\n");
usage();
}
if((srvfd = open(srvfdfile, ORDWR)) < 0)
fatal("open %s: %r", srvfdfile);
} else if(srv == nil)
usage();
exclusions();
if(dbg) {
n = create(dbfile, OWRITE|OTRUNC, 0666);
dup(n, DFD);
close(n);
}
DEBUG(DFD, "exportfs: started\n");
rfork(RFNOTEG|RFREND);
if(messagesize == 0){
messagesize = iounit(0);
if(messagesize == 0)
messagesize = 8192+IOHDRSZ;
}
fhash = emallocz(sizeof(Fid*)*FHASHSIZE);
fmtinstall('F', fcallfmt);
if(srvfd == -1) {
if(chdir(srv) < 0) {
char ebuf[ERRMAX];
ebuf[0] = '\0';
errstr(ebuf, sizeof ebuf);
DEBUG(DFD, "chdir(\"%s\"): %s\n", srv, ebuf);
mounterror(ebuf);
}
DEBUG(DFD, "invoked as server for %s", srv);
}
DEBUG(DFD, "\niniting root\n");
initroot();
io();
}
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