[PATCH 1/3] lightnvm: convert sprintf into snprintf

[Javier González]

Convert sprintf calls to snprintf in order to make possible buffer
overflow more obvious.

Signed-off-by: Javier González <jav...@cnexlabs.com>
---
 drivers/lightnvm/core.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index c3340ef..bdbb333 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -272,7 +272,8 @@ 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);
+       snprintf(tdisk->disk_name, sizeof(tdisk->disk_name), "%s",
+                                                       create->tgtname);
        tdisk->flags = GENHD_FL_EXT_DEVT;
        tdisk->major = 0;
        tdisk->first_minor = 0;
@@ -1195,13 +1196,13 @@ 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);
+               snprintf(info->devname, sizeof(info->devname), "%s", dev->name);
 
                /* kept for compatibility */
                info->bmversion[0] = 1;
                info->bmversion[1] = 0;
                info->bmversion[2] = 0;
-               sprintf(info->bmname, "%s", "gennvm");
+               snprintf(info->bmname, sizeof(info->bmname), "%s", "gennvm");
                i++;
 
                if (i > 31) {
-- 
2.7.4