On 1/6/06, Alan Menegotto <[EMAIL PROTECTED]> wrote:
> Hi.
>
> I couldn't understand the logic in the function 'static int __init
> ipv4_proc_init(void)' located at net/ipv4/af_inet.c. Look at the code:
>
> static int __init ipv4_proc_init(void)
> {
> int rc = 0;
>
> if (raw_proc_init())
> goto out_raw;
> if (tcp4_proc_init())
> goto out_tcp;
> if (udp4_proc_init())
> goto out_udp;
> if (fib_proc_init())
> goto out_fib;
> if (ip_misc_proc_init())
> goto out_misc;
> out:
> return rc;
> out_misc:
> fib_proc_exit();
> out_fib:
> udp4_proc_exit();
> out_udp:
> tcp4_proc_exit();
> out_tcp:
> raw_proc_exit();
> out_raw:
> rc = -ENOMEM;
> goto out;
> }
>
> Calling tcp4_proc_init should go to label out_tcp, which call
> raw_proc_exit(). Is this correct? If yes, why?
No, calling tcp4_proc_init() will only lead to calling raw_proc_exit()
if tcp4_proc_init() returns !0, i.e. if it fails.
- Arnaldo
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