41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
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From 87a8f29785bb605350821f1638a42e6cf3e49ce3 Mon Sep 17 00:00:00 2001
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From: Will Newton <willn@resin.io>
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Date: Thu, 31 Aug 2017 10:42:13 +0100
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Subject: [PATCH 49/86] src/check.c: Fix up mtools created bad dir entries
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mtools writes uninitialized data to the case field of some
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directory entries. Running fsck.fat on these filesystems
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will cause the directory to get deleted which can lead to
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data loss. Detect this situation and clear the flag instead.
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mtools patch to fix the original issue:
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https://lists.gnu.org/archive/html/info-mtools/2014-08/msg00000.html
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Signed-off-by: Will Newton <willn@resin.io>
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---
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src/check.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/src/check.c b/src/check.c
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index a2a752f..f1e18be 100644
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--- a/src/check.c
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+++ b/src/check.c
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@@ -495,6 +495,13 @@ static int handle_dot(DOS_FS * fs, DOS_FILE * file, int dots)
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break;
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}
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}
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+ if (file->dir_ent.lcase & FAT_NO_83NAME) {
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+ /* Some versions of mtools write these directory entries with random data in
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+ this field. */
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+ printf("%s\n Is a dot with no 8.3 name flag set, clearing.\n", path_name(file));
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+ file->dir_ent.lcase &= ~FAT_NO_83NAME;
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+ MODIFY(file, lcase, file->dir_ent.lcase);
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+ }
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if (!dots) {
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printf("Root contains directory \"%s\". Dropping it.\n", name);
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drop_file(fs, file);
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--
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1.8.3.1
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