From 0c9b35e8dd1837ece019318a9ea9199e970e74a1 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Fri, 15 Feb 2013 16:52:05 +0100 Subject: dosfs: Ensure valid data cluster count --- cpukit/libfs/src/dosfs/fat.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/cpukit/libfs/src/dosfs/fat.c b/cpukit/libfs/src/dosfs/fat.c index 8e9da218ed..b2b55c0e7b 100644 --- a/cpukit/libfs/src/dosfs/fat.c +++ b/cpukit/libfs/src/dosfs/fat.c @@ -652,12 +652,17 @@ fat_init_volume_info(fat_fs_info_t *fs_info, const char *device) vol->mask = FAT_FAT16_MASK; vol->eoc_val = FAT_FAT16_EOC; } - else + else if ( vol->data_cls < FAT_FAT32_MASK - 1 ) { vol->type = FAT_FAT32; vol->mask = FAT_FAT32_MASK; vol->eoc_val = FAT_FAT32_EOC; } + else + { + close(vol->fd); + rtems_set_errno_and_return_minus_one( EINVAL ); + } } if (vol->type == FAT_FAT32) -- cgit v1.2.3