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From: "Martin Pärtel" <martin.partel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [patch] posix_fallocate.3: EBADF possible when lacking read access
Date: Tue, 09 Oct 2012 01:43:20 +0300	[thread overview]
Message-ID: <50735708.7090900@gmail.com> (raw)

posix_fallocate on a write-only FD may fail with a EBADF when fallocate(2) is unsupported by the filesystem and glibc must emulate it.
The emulation requires read-write access to the file. The source code is in glibc's sysdeps/posix/posix_fallocate.c


Applies to git master.

diff --git a/man3/posix_fallocate.3 b/man3/posix_fallocate.3
index 6fae367..b92c140 100644
--- a/man3/posix_fallocate.3
+++ b/man3/posix_fallocate.3
@@ -71,7 +71,8 @@ is not set.
 .TP
 .B EBADF
 .I fd
-is not a valid file descriptor, or is not opened for writing.
+is not a valid file descriptor, or is not opened for
+both reading and writing.
 .TP
 .B EFBIG
 .I offset+len
--
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                 reply	other threads:[~2012-10-08 22:43 UTC|newest]

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