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lightnvm: convert sprintf into strlcpy 

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

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Javier González 2017-04-15 20:55:49 +02:00 committed by Jens Axboe
parent d788c59be5
commit 6eb082452d
1 changed files with 3 additions and 3 deletions
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6
drivers/lightnvm/core.c
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@ -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) {