diff options
| author | Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> | 2017-09-25 22:06:33 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-10-06 11:28:19 -0400 |
| commit | 8df8731474467782c6126f41da87618bcb84852a (patch) | |
| tree | c209c844a5b786814b0df4ee14f236844dac1adb | |
| parent | edce588a4541be6f0dee397f9b501b5569bbb892 (diff) | |
fs/fat: Fix pathnames using '..' that lead to the root directory
If we end up back in the root directory via a '..' directory entry, set
itr->is_root accordingly. Failing to do that gives spews like
"Invalid FAT entry" and being unable to access directory entries located
past the first cluster of the root directory.
Fixes: 8eafae209c35 ("fat/fs: convert to directory iterators")
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
| -rw-r--r-- | fs/fat/fat.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 36a309c73c..3d3e17e8fa 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -710,13 +710,14 @@ static void fat_itr_child(fat_itr *itr, fat_itr *parent) itr->fsdata = parent->fsdata; if (clustnum > 0) { itr->clust = clustnum; + itr->is_root = 0; } else { itr->clust = parent->fsdata->root_cluster; + itr->is_root = 1; } itr->dent = NULL; itr->remaining = 0; itr->last_cluster = 0; - itr->is_root = 0; } static void *next_cluster(fat_itr *itr) |