sandbox: check lseek return value in handle_ufi_command
Invoking lseek() may result in an error. Handle it.
Addresses-Coverity-ID: 376212 ("Error handling issues (CHECKED_RETURN)")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/drivers/usb/emul/sandbox_flash.c b/drivers/usb/emul/sandbox_flash.c
index 6e8cfe1..01ccc4b 100644
--- a/drivers/usb/emul/sandbox_flash.c
+++ b/drivers/usb/emul/sandbox_flash.c
@@ -188,15 +188,19 @@
struct scsi_emul_info *info = &priv->eminfo;
const struct scsi_cmd *req = buff;
int ret;
+ off_t offset;
ret = sb_scsi_emul_command(info, req, len);
if (!ret) {
setup_response(priv);
} else if ((ret == SCSI_EMUL_DO_READ || ret == SCSI_EMUL_DO_WRITE) &&
priv->fd != -1) {
- os_lseek(priv->fd, info->seek_block * info->block_size,
- OS_SEEK_SET);
- setup_response(priv);
+ offset = os_lseek(priv->fd, info->seek_block * info->block_size,
+ OS_SEEK_SET);
+ if (offset == (off_t)-1)
+ setup_fail_response(priv);
+ else
+ setup_response(priv);
} else {
setup_fail_response(priv);
}