From b0ae37013cf58b5cdeb67bb0b182669be1540aa9 Mon Sep 17 00:00:00 2001
From: Ori Bernstein <ori@eigenstate.org>
Date: Wed, 18 Aug 2021 14:44:29 +0000
Subject: exportfs: revert e524e8d65a7573c46d7beb49e77bfc2d55a5563d

It turns out that the '-f' flag was being used, and removing
it broke things.
---
 sys/src/cmd/exportfs/exportfs.c | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

(limited to 'sys/src/cmd/exportfs/exportfs.c')

diff --git a/sys/src/cmd/exportfs/exportfs.c b/sys/src/cmd/exportfs/exportfs.c
index 86680e1f6..b17cec499 100644
--- a/sys/src/cmd/exportfs/exportfs.c
+++ b/sys/src/cmd/exportfs/exportfs.c
@@ -10,16 +10,18 @@ int	readonly;
 void
 usage(void)
 {
-	fprint(2, "usage: %s [-dsR] [-m msize] [-r root] "
-		"[-P patternfile] [-S srvfile]\n", argv0);
+	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 *srv, *srvfdfile;
+	char *dbfile, *srv, *srvfdfile;
+	int n;
 
+	dbfile = "/tmp/exportdb";
 	srv = nil;
 	srvfd = -1;
 	srvfdfile = nil;
@@ -29,6 +31,10 @@ main(int argc, char **argv)
 		dbg++;
 		break;
 
+	case 'f':
+		dbfile = EARGF(usage());
+		break;
+
 	case 'm':
 		messagesize = strtoul(EARGF(usage()), nil, 0);
 		break;
@@ -76,7 +82,13 @@ main(int argc, char **argv)
 
 	exclusions();
 
-	DEBUG(2, "exportfs: started\n");
+	if(dbg) {
+		n = create(dbfile, OWRITE|OTRUNC, 0666);
+		dup(n, DFD);
+		close(n);
+	}
+
+	DEBUG(DFD, "exportfs: started\n");
 
 	rfork(RFNOTEG|RFREND);
 
@@ -94,13 +106,13 @@ main(int argc, char **argv)
 			char ebuf[ERRMAX];
 			ebuf[0] = '\0';
 			errstr(ebuf, sizeof ebuf);
-			DEBUG(2, "chdir(\"%s\"): %s\n", srv, ebuf);
+			DEBUG(DFD, "chdir(\"%s\"): %s\n", srv, ebuf);
 			mounterror(ebuf);
 		}
-		DEBUG(2, "invoked as server for %s", srv);
+		DEBUG(DFD, "invoked as server for %s", srv);
 	}
 
-	DEBUG(2, "\niniting root\n");
+	DEBUG(DFD, "\niniting root\n");
 	initroot();
 	io();
 }
-- 
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