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pty: make ptmx file ops read-only after init

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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>
This commit is contained in:
Kees Cook 2016-09-08 15:35:59 -07:00 committed by Greg Kroah-Hartman
parent a727b025f4
commit d2ec3f77de
1 changed files with 1 additions and 1 deletions
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drivers/tty/pty.c
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@ -800,7 +800,7 @@ out_free_file:
return retval;
}
static struct file_operations ptmx_fops;
static struct file_operations ptmx_fops __ro_after_init;
static void __init unix98_pty_init(void)
{