The starting cluster number of directory is needed to initialize ".." (parent directory) entry when creating a new directory.
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- fs/fat/fat.c | 2 ++ include/fat.h | 1 + 2 files changed, 3 insertions(+)
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 9bafc3a40c..ade5264551 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -639,6 +639,7 @@ int fat_itr_root(fat_itr *itr, fsdata *fsdata) return -ENXIO;
itr->fsdata = fsdata; + itr->start_clust = 0; itr->clust = fsdata->root_cluster; itr->next_clust = fsdata->root_cluster; itr->dent = NULL; @@ -674,6 +675,7 @@ void fat_itr_child(fat_itr *itr, fat_itr *parent) assert(fat_itr_isdir(parent));
itr->fsdata = parent->fsdata; + itr->start_clust = clustnum; if (clustnum > 0) { itr->clust = clustnum; itr->next_clust = clustnum; diff --git a/include/fat.h b/include/fat.h index bc0f77abb5..295da0f243 100644 --- a/include/fat.h +++ b/include/fat.h @@ -197,6 +197,7 @@ static inline u32 sect_to_clust(fsdata *fsdata, int sect)
typedef struct { fsdata *fsdata; /* filesystem parameters */ + unsigned start_clust; /* first cluster */ unsigned clust; /* current cluster */ unsigned next_clust; /* next cluster if remaining == 0 */ int last_cluster; /* set once we've read last cluster */