If size of a flash image file is 0 ubiformat silently formats the volume.
Check size and abort if size == 0. This may be the case if an empty or tftp
mounted file is used.
Signed-off-by: Jan Weitzel <j.weitzel@xxxxxxxxx>
---
commands/ubiformat.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/commands/ubiformat.c b/commands/ubiformat.c
index 121816f..5b4e572 100644
--- a/commands/ubiformat.c
+++ b/commands/ubiformat.c
@@ -325,6 +325,11 @@ static int flash_image(const struct mtd_dev_info *mtd,
goto out_close;
}
+ if (st_size == 0) {
+ sys_errmsg("file \"%s\" has size 0 bytes", args.image);
+ goto out_close;
+ }
+
verbose(args.verbose, "will write %d eraseblocks", img_ebs);
divisor = img_ebs;
for (eb = 0; eb < mtd->eb_cnt; eb++) {
--
1.7.0.4
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