1 From 3593063f735f453d43f461292e26913436c11ca3 Mon Sep 17 00:00:00 2001
2 From: Alexander Kanavin <alex.kanavin@gmail.com>
3 Date: Sat, 1 May 2021 13:06:12 +0200
4 Subject: [PATCH] lib/ext2fs/unix_io.c: revert parts of "libext2fs: fix
5 potential races in unix_io"
7 Upstream-Status: Submitted [https://github.com/tytso/e2fsprogs/pull/68]
8 Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
10 lib/ext2fs/unix_io.c | 15 ++++++++-------
11 1 file changed, 8 insertions(+), 7 deletions(-)
13 diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c
14 index 528c2fbc..f4916b21 100644
15 --- a/lib/ext2fs/unix_io.c
16 +++ b/lib/ext2fs/unix_io.c
17 @@ -311,10 +311,10 @@ bounce_read:
22 - if (actual > align_size)
23 - actual = align_size;
25 + if ((actual + offset) > align_size)
26 + actual = align_size - offset;
29 memcpy(buf, data->bounce + offset, actual);
31 really_read += actual;
32 @@ -455,9 +455,10 @@ bounce_write:
36 - if (actual > align_size)
37 - actual = align_size;
39 + if ((actual + offset) > align_size)
40 + actual = align_size - offset;
43 memcpy(((char *)data->bounce) + offset, buf, actual);
44 if (ext2fs_llseek(data->dev, aligned_blk * align_size, SEEK_SET) < 0) {
45 retval = errno ? errno : EXT2_ET_LLSEEK_FAILED;