[PATCH] xfs_io: don't leak fd in open -Tr failure case

[Eric Sandeen]

Coverity spotted this.

It complained that we didn't close the fd before returning in
this case of incompatible options, but it seems like we should
just test for the incompatible flags before even trying to open
the file, no?

(The open would have failed in any case, but with a somewhat
cryptic "Invalid argument" - so it's probably better to state
it plainly and bail immediately.)

Signed-off-by: Eric Sandeen <sandeen at redhat.com>
---

diff --git a/io/open.c b/io/open.c
index 6bb0d46..c106fa7 100644
--- a/io/open.c
+++ b/io/open.c
@@ -342,6 +342,11 @@ open_f(
 	if (optind != argc - 1)
 		return command_usage(&open_cmd);
 
+	if ((flags & (IO_READONLY|IO_TMPFILE)) == (IO_READONLY|IO_TMPFILE)) {
+		fprintf(stderr, _("-T and -r options are incompatible\n"));
+		return -1;
+	}
+
 	fd = openfile(argv[optind], &geometry, flags, mode);
 	if (fd < 0)
 		return 0;
@@ -349,11 +354,6 @@ open_f(
 	if (!platform_test_xfs_fd(fd))
 		flags |= IO_FOREIGN;
 
-	if ((flags & (IO_READONLY|IO_TMPFILE)) == (IO_READONLY|IO_TMPFILE)) {
-		fprintf(stderr, _("-T and -r options are incompatible\n"));
-		return -1;
-	}
-
 	addfile(argv[optind], fd, &geometry, flags);
 	return 0;
 }