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Re: [PATCH 2/2] mkfs.xfs: prevent close(-1) on protofile error path

To: xfs-oss <xfs@xxxxxxxxxxx>
Subject: Re: [PATCH 2/2] mkfs.xfs: prevent close(-1) on protofile error path
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Mon, 14 Apr 2014 09:48:28 -0500
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <534BF472.8030908@xxxxxxxxxxx>
References: <534BF472.8030908@xxxxxxxxxxx>
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.4.0
My previous cleanups introduced this; in the case where
fd=open() failed, the out_fail: path would try to close(-1).

Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---

diff --git a/mkfs/proto.c b/mkfs/proto.c
index 308325b..5a47e27 100644
--- a/mkfs/proto.c
+++ b/mkfs/proto.c
@@ -84,7 +84,8 @@ setup_proto(
        return buf;
 
 out_fail:
-       close(fd);
+       if (fd >= 0)
+               close(fd);
        free(buf);
        exit(1);
 }

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