From: Nathan Neulinger <nneul@umr.edu>
Date: Tue, 4 May 2004 10:31:55 +0000 (+0000)
Subject: linux-handle-short-reads-gracefully-20040504
X-Git-Tag: openafs-devel-1_3_64~39
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=64b8ee9d887c4d7d669734e30bfd66c758efb51e;p=packages%2Fo%2Fopenafs.git

linux-handle-short-reads-gracefully-20040504


break out of the read loop with EIO if we've reached EOF,
rather than looping forever hoping the file will grow.
---

diff --git a/src/afs/LINUX/osi_misc.c b/src/afs/LINUX/osi_misc.c
index 135429bb5..8a62d08d4 100644
--- a/src/afs/LINUX/osi_misc.c
+++ b/src/afs/LINUX/osi_misc.c
@@ -198,6 +198,13 @@ osi_file_uio_rdwr(struct osi_file *osifile, uio_t * uiop, int rw)
 	if (code < 0) {
 	    code = -code;
 	    break;
+	} else if (code == 0) {
+	    /*
+	     * This is bad -- we can't read any more data from the
+	     * file, but we have no good way of signaling a partial
+	     * read either.
+	    code = EIO;
+	    break;
 	}
 
 	iov->iov_base += code;