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cdev example: Fix deprecated copystr() to prevent kernel panic #1895

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cdev example: Fix deprecated copystr() to prevent kernel panic #1895

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90d4f48
cdev: Replace deprecated copystr with copyout
isoux Nov 23, 2025
89aedc8
cdev: Use len variable instead of hardcoded buffer size
isoux Nov 25, 2025
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2 changes: 1 addition & 1 deletion share/examples/kld/cdev/module/cdev.c
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Original file line number Diff line number Diff line change
Expand Up @@ -176,7 +176,7 @@ mydev_read(struct cdev *dev, struct uio *uio, int ioflag)
if (len <= 0) {
err = -1;
} else { /* copy buf to userland */
copystr(&buf, uio->uio_iov->iov_base, 513, &len);
copyout(&buf, uio->uio_iov->iov_base, 513);
}
return(err);
}