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| author | Rémi Denis-Courmont <remi.denis-courmont@nokia.com> | 2011-03-08 22:44:11 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-03-09 11:59:32 -0800 |
| commit | acaf7df610ff3faf1778ce40d601fc3dd4a41b40 (patch) | |
| tree | a6ed66e7314b43d253dceb5930da6b5fc40d051f /net/phonet | |
| parent | f7ae8d59f66154df0424fd94035c89981fed3379 (diff) | |
| download | lwn-acaf7df610ff3faf1778ce40d601fc3dd4a41b40.tar.gz lwn-acaf7df610ff3faf1778ce40d601fc3dd4a41b40.zip | |
Phonet: provide pipe socket option to retrieve the pipe identifier
User-space sometimes needs this information. In particular, the GPRS
context or the AT commands pipe setups may use the pipe handle as a
reference.
This removes the settable pipe handle with CONFIG_PHONET_PIPECTRLR.
It did not handle error cases correctly. Furthermore, the kernel
*could* implement a smart scheme for allocating handles (if ever
needed), but userspace really cannot.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/phonet')
| -rw-r--r-- | net/phonet/pep.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/net/phonet/pep.c b/net/phonet/pep.c index c0fab4cfcef7..abfb795af142 100644 --- a/net/phonet/pep.c +++ b/net/phonet/pep.c @@ -853,6 +853,7 @@ static int pep_sock_connect(struct sock *sk, struct sockaddr *addr, int len) pn->pn_sk.dobject = pn_sockaddr_get_object(spn); pn->pn_sk.resource = pn_sockaddr_get_resource(spn); + pn->pipe_handle = 1; /* anything but INVALID_HANDLE */ return pipe_handler_request(sk, PNS_PEP_CONNECT_REQ, PN_PIPE_DISABLE, data, 4); } @@ -909,14 +910,6 @@ static int pep_setsockopt(struct sock *sk, int level, int optname, lock_sock(sk); switch (optname) { -#ifdef CONFIG_PHONET_PIPECTRLR - case PNPIPE_PIPE_HANDLE: - if (val) { - pn->pipe_handle = val; - break; - } -#endif - case PNPIPE_ENCAP: if (val && val != PNPIPE_ENCAP_IP) { err = -EINVAL; @@ -982,6 +975,12 @@ static int pep_getsockopt(struct sock *sk, int level, int optname, val = pn->ifindex; break; + case PNPIPE_HANDLE: + val = pn->pipe_handle; + if (val == PN_PIPE_INVALID_HANDLE) + return -EINVAL; + break; + #ifdef CONFIG_PHONET_PIPECTRLR case PNPIPE_ENABLE: val = sk->sk_state == TCP_ESTABLISHED; |