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net: drop capability from protocol definitions 

struct can_proto had a capability field which wasn't ever used.  It is
dropped entirely.

struct inet_protosw had a capability field which can be more clearly
expressed in the code by just checking if sock->type = SOCK_RAW.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Paris 2009-11-05 20:44:37 -08:00 committed by David S. Miller
parent 89794a6f3b
commit 13f18aa05f
16 changed files with 2 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/can/core.h
View File

@ -32,14 +32,12 @@
* struct can_proto - CAN protocol structure
* @type: type argument in socket() syscall, e.g. SOCK_DGRAM.
* @protocol: protocol number in socket() syscall.
* @capability: capability needed to open the socket, or -1 for no restriction.
* @ops: pointer to struct proto_ops for sock->ops.
* @prot: pointer to struct proto structure.
*/
struct can_proto {
int type;
int protocol;
int capability;
struct proto_ops *ops;
struct proto *prot;
};

4
include/net/protocol.h
View File

@ -82,10 +82,6 @@ struct inet_protosw {
struct proto *prot;
const struct proto_ops *ops;
int capability; /* Which (if any) capability do
* we need to use this socket
* interface?
*/
char no_check; /* checksum on rcv/xmit/none? */
unsigned char flags; /* See INET_PROTOSW_* below. */
};

5
net/can/af_can.c
View File

@ -160,11 +160,6 @@ static int can_create(struct net *net, struct socket *sock, int protocol)
goto errout;
}
if (cp->capability >= 0 && !capable(cp->capability)) {
err = -EPERM;
goto errout;
}
sock->ops = cp->ops;
sk = sk_alloc(net, PF_CAN, GFP_KERNEL, cp->prot);

1
net/can/bcm.c
View File

@ -1576,7 +1576,6 @@ static struct proto bcm_proto __read_mostly = {
static struct can_proto bcm_can_proto __read_mostly = {
.type = SOCK_DGRAM,
.protocol = CAN_BCM,
.capability = -1,
.ops = &bcm_ops,
.prot = &bcm_proto,
};

1
net/can/raw.c
View File

@ -742,7 +742,6 @@ static struct proto raw_proto __read_mostly = {
static struct can_proto raw_can_proto __read_mostly = {
.type = SOCK_RAW,
.protocol = CAN_RAW,
.capability = -1,
.ops = &raw_ops,
.prot = &raw_proto,
};

1
net/dccp/ipv4.c
View File

@ -991,7 +991,6 @@ static struct inet_protosw dccp_v4_protosw = {
.protocol = IPPROTO_DCCP,
.prot = &dccp_v4_prot,
.ops = &inet_dccp_ops,
.capability = -1,
.no_check = 0,
.flags = INET_PROTOSW_ICSK,
};

1
net/dccp/ipv6.c
View File

@ -1185,7 +1185,6 @@ static struct inet_protosw dccp_v6_protosw = {
.protocol = IPPROTO_DCCP,
.prot = &dccp_v6_prot,
.ops = &inet6_dccp_ops,
.capability = -1,
.flags = INET_PROTOSW_ICSK,
};

5
net/ipv4/af_inet.c
View File

@ -325,7 +325,7 @@ lookup_protocol:
}
err = -EPERM;
if (answer->capability > 0 && !capable(answer->capability))
if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW))
goto out_rcu_unlock;
err = -EAFNOSUPPORT;
@ -947,7 +947,6 @@ static struct inet_protosw inetsw_array[] =
.protocol = IPPROTO_TCP,
.prot = &tcp_prot,
.ops = &inet_stream_ops,
.capability = -1,
.no_check = 0,
.flags = INET_PROTOSW_PERMANENT |
INET_PROTOSW_ICSK,
@ -958,7 +957,6 @@ static struct inet_protosw inetsw_array[] =
.protocol = IPPROTO_UDP,
.prot = &udp_prot,
.ops = &inet_dgram_ops,
.capability = -1,
.no_check = UDP_CSUM_DEFAULT,
.flags = INET_PROTOSW_PERMANENT,
},
@ -969,7 +967,6 @@ static struct inet_protosw inetsw_array[] =
.protocol = IPPROTO_IP, /* wild card */
.prot = &raw_prot,
.ops = &inet_sockraw_ops,
.capability = CAP_NET_RAW,
.no_check = UDP_CSUM_DEFAULT,
.flags = INET_PROTOSW_REUSE,
}

1
net/ipv4/udplite.c
View File

@ -64,7 +64,6 @@ static struct inet_protosw udplite4_protosw = {
.protocol = IPPROTO_UDPLITE,
.prot = &udplite_prot,
.ops = &inet_dgram_ops,
.capability = -1,
.no_check = 0, /* must checksum (RFC 3828) */
.flags = INET_PROTOSW_PERMANENT,
};

2
net/ipv6/af_inet6.c
View File

@ -158,7 +158,7 @@ lookup_protocol:
}
err = -EPERM;
if (answer->capability > 0 && !capable(answer->capability))
if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW))
goto out_rcu_unlock;
sock->ops = answer->ops;

1
net/ipv6/raw.c
View File

@ -1336,7 +1336,6 @@ static struct inet_protosw rawv6_protosw = {
.protocol = IPPROTO_IP, /* wild card */
.prot = &rawv6_prot,
.ops = &inet6_sockraw_ops,
.capability = CAP_NET_RAW,
.no_check = UDP_CSUM_DEFAULT,
.flags = INET_PROTOSW_REUSE,
};

1
net/ipv6/tcp_ipv6.c
View File

@ -2112,7 +2112,6 @@ static struct inet_protosw tcpv6_protosw = {
.protocol = IPPROTO_TCP,
.prot = &tcpv6_prot,
.ops = &inet6_stream_ops,
.capability = -1,
.no_check = 0,
.flags = INET_PROTOSW_PERMANENT |
INET_PROTOSW_ICSK,

1
net/ipv6/udp.c
View File

@ -1286,7 +1286,6 @@ static struct inet_protosw udpv6_protosw = {
.protocol = IPPROTO_UDP,
.prot = &udpv6_prot,
.ops = &inet6_dgram_ops,
.capability =-1,
.no_check = UDP_CSUM_DEFAULT,
.flags = INET_PROTOSW_PERMANENT,
};

1
net/ipv6/udplite.c
View File

@ -62,7 +62,6 @@ static struct inet_protosw udplite6_protosw = {
.protocol = IPPROTO_UDPLITE,
.prot = &udplitev6_prot,
.ops = &inet6_dgram_ops,
.capability = -1,
.no_check = 0,
.flags = INET_PROTOSW_PERMANENT,
};

2
net/sctp/ipv6.c
View File

@ -930,7 +930,6 @@ static struct inet_protosw sctpv6_seqpacket_protosw = {
.protocol = IPPROTO_SCTP,
.prot = &sctpv6_prot,
.ops = &inet6_seqpacket_ops,
.capability = -1,
.no_check = 0,
.flags = SCTP_PROTOSW_FLAG
};
@ -939,7 +938,6 @@ static struct inet_protosw sctpv6_stream_protosw = {
.protocol = IPPROTO_SCTP,
.prot = &sctpv6_prot,
.ops = &inet6_seqpacket_ops,
.capability = -1,
.no_check = 0,
.flags = SCTP_PROTOSW_FLAG,
};

2
net/sctp/protocol.c
View File

@ -909,7 +909,6 @@ static struct inet_protosw sctp_seqpacket_protosw = {
.protocol = IPPROTO_SCTP,
.prot = &sctp_prot,
.ops = &inet_seqpacket_ops,
.capability = -1,
.no_check = 0,
.flags = SCTP_PROTOSW_FLAG
};
@ -918,7 +917,6 @@ static struct inet_protosw sctp_stream_protosw = {
.protocol = IPPROTO_SCTP,
.prot = &sctp_prot,
.ops = &inet_seqpacket_ops,
.capability = -1,
.no_check = 0,
.flags = SCTP_PROTOSW_FLAG
};