pty: make ptmx file ops read-only after init
The ptmx_fops structure is only changed during init, so mark it as such. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -800,7 +800,7 @@ static int ptmx_open(struct inode *inode, struct file *filp)
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return retval;
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}
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static struct file_operations ptmx_fops;
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static struct file_operations ptmx_fops __ro_after_init;
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static void __init unix98_pty_init(void)
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{
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