X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=extras%2Fvolume_id%2Flib%2Ffat.c;h=9a2e4784d8cee165ca97f5b5a0d65c99e4456d92;hb=e18e6d79996edeeb07e122f3582a688c3ef4f6b9;hp=61a94504381275845d6e399fa945238aadb37ad7;hpb=2bac6c64aa7808cafd7706d56887a97ba9f7817d;p=elogind.git

diff --git a/extras/volume_id/lib/fat.c b/extras/volume_id/lib/fat.c
index 61a945043..9a2e4784d 100644
--- a/extras/volume_id/lib/fat.c
+++ b/extras/volume_id/lib/fat.c
@@ -133,7 +133,7 @@ static uint8_t *get_attr_volume_id(struct vfat_dir_entry *dir, unsigned int coun
 	return NULL;
 }
 
-int volume_id_probe_vfat(struct volume_id *id, uint64_t off)
+int volume_id_probe_vfat(struct volume_id *id, uint64_t off, uint64_t size)
 {
 	struct vfat_super_block *vs;
 	struct vfat_dir_entry *dir;
@@ -349,7 +349,7 @@ fat32:
 
 		/* set next cluster */
 		next = le32_to_cpu(*((uint32_t *) buf)) & 0x0fffffff;
-		if (next == 0)
+		if (next < 2 || next >= 0x0ffffff0)
 			break;
 	}
 	if (maxloop == 0)