On 04/11/2017 04:18 PM, Javier González wrote:
Convert sprintf calls to strlcpy in order to make possible buffer
overflow more obvious.
Signed-off-by: Javier González <javier@xxxxxxxxxxxx>
---
drivers/lightnvm/core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 258007a..2c26af3 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -273,7 +273,7 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
goto err_disk;
blk_queue_make_request(tqueue, tt->make_rq);
- sprintf(tdisk->disk_name, "%s", create->tgtname);
+ strlcpy(tdisk->disk_name, create->tgtname, sizeof(tdisk->disk_name));
tdisk->flags = GENHD_FL_EXT_DEVT;
tdisk->major = 0;
tdisk->first_minor = 0;
@@ -1198,13 +1198,13 @@ static long nvm_ioctl_get_devices(struct file *file, void __user *arg)
list_for_each_entry(dev, &nvm_devices, devices) {
struct nvm_ioctl_device_info *info = &devices->info[i];
- sprintf(info->devname, "%s", dev->name);
+ strlcpy(info->devname, dev->name, sizeof(info->devname));
/* kept for compatibility */
info->bmversion[0] = 1;
info->bmversion[1] = 0;
info->bmversion[2] = 0;
- sprintf(info->bmname, "%s", "gennvm");
+ strlcpy(info->bmname, "gennvm", sizeof(info->bmname));
i++;
if (i > 31) {
Thanks. Applied for 4.12.
