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Diffstat (limited to 'test/syscalls/linux/iptables.h')
-rw-r--r-- | test/syscalls/linux/iptables.h | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/test/syscalls/linux/iptables.h b/test/syscalls/linux/iptables.h deleted file mode 100644 index 0719c60a4..000000000 --- a/test/syscalls/linux/iptables.h +++ /dev/null @@ -1,198 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// There are a number of structs and values that we can't #include because of a -// difference between C and C++ (C++ won't let you implicitly cast from void* to -// struct something*). We re-define them here. - -#ifndef GVISOR_TEST_SYSCALLS_IPTABLES_TYPES_H_ -#define GVISOR_TEST_SYSCALLS_IPTABLES_TYPES_H_ - -// Netfilter headers require some headers to preceed them. -// clang-format off -#include <netinet/in.h> -#include <stddef.h> -// clang-format on - -#include <linux/netfilter/x_tables.h> -#include <linux/netfilter_ipv4.h> -#include <net/if.h> -#include <netinet/ip.h> -#include <stdint.h> - -#define ipt_standard_target xt_standard_target -#define ipt_entry_target xt_entry_target -#define ipt_error_target xt_error_target - -enum SockOpts { - // For setsockopt. - BASE_CTL = 64, - SO_SET_REPLACE = BASE_CTL, - SO_SET_ADD_COUNTERS, - SO_SET_MAX = SO_SET_ADD_COUNTERS, - - // For getsockopt. - SO_GET_INFO = BASE_CTL, - SO_GET_ENTRIES, - SO_GET_REVISION_MATCH, - SO_GET_REVISION_TARGET, - SO_GET_MAX = SO_GET_REVISION_TARGET -}; - -// ipt_ip specifies basic matching criteria that can be applied by examining -// only the IP header of a packet. -struct ipt_ip { - // Source IP address. - struct in_addr src; - - // Destination IP address. - struct in_addr dst; - - // Source IP address mask. - struct in_addr smsk; - - // Destination IP address mask. - struct in_addr dmsk; - - // Input interface. - char iniface[IFNAMSIZ]; - - // Output interface. - char outiface[IFNAMSIZ]; - - // Input interface mask. - unsigned char iniface_mask[IFNAMSIZ]; - - // Output interface mask. - unsigned char outiface_mask[IFNAMSIZ]; - - // Transport protocol. - uint16_t proto; - - // Flags. - uint8_t flags; - - // Inverse flags. - uint8_t invflags; -}; - -// ipt_entry is an iptables rule. It contains information about what packets the -// rule matches and what action (target) to perform for matching packets. -struct ipt_entry { - // Basic matching information used to match a packet's IP header. - struct ipt_ip ip; - - // A caching field that isn't used by userspace. - unsigned int nfcache; - - // The number of bytes between the start of this ipt_entry struct and the - // rule's target. - uint16_t target_offset; - - // The total size of this rule, from the beginning of the entry to the end of - // the target. - uint16_t next_offset; - - // A return pointer not used by userspace. - unsigned int comefrom; - - // Counters for packets and bytes, which we don't yet implement. - struct xt_counters counters; - - // The data for all this rules matches followed by the target. This runs - // beyond the value of sizeof(struct ipt_entry). - unsigned char elems[0]; -}; - -// Passed to getsockopt(SO_GET_INFO). -struct ipt_getinfo { - // The name of the table. The user only fills this in, the rest is filled in - // when returning from getsockopt. Currently "nat" and "mangle" are supported. - char name[XT_TABLE_MAXNAMELEN]; - - // A bitmap of which hooks apply to the table. For example, a table with hooks - // PREROUTING and FORWARD has the value - // (1 << NF_IP_PRE_REOUTING) | (1 << NF_IP_FORWARD). - unsigned int valid_hooks; - - // The offset into the entry table for each valid hook. The entry table is - // returned by getsockopt(SO_GET_ENTRIES). - unsigned int hook_entry[NF_IP_NUMHOOKS]; - - // For each valid hook, the underflow is the offset into the entry table to - // jump to in case traversing the table yields no verdict (although I have no - // clue how that could happen - builtin chains always end with a policy, and - // user-defined chains always end with a RETURN. - // - // The entry referred to must be an "unconditional" entry, meaning it has no - // matches, specifies no IP criteria, and either DROPs or ACCEPTs packets. It - // basically has to be capable of making a definitive decision no matter what - // it's passed. - unsigned int underflow[NF_IP_NUMHOOKS]; - - // The number of entries in the entry table returned by - // getsockopt(SO_GET_ENTRIES). - unsigned int num_entries; - - // The size of the entry table returned by getsockopt(SO_GET_ENTRIES). - unsigned int size; -}; - -// Passed to getsockopt(SO_GET_ENTRIES). -struct ipt_get_entries { - // The name of the table. The user fills this in. Currently "nat" and "mangle" - // are supported. - char name[XT_TABLE_MAXNAMELEN]; - - // The size of the entry table in bytes. The user fills this in with the value - // from struct ipt_getinfo.size. - unsigned int size; - - // The entries for the given table. This will run past the size defined by - // sizeof(struct ipt_get_entries). - struct ipt_entry entrytable[0]; -}; - -// Passed to setsockopt(SO_SET_REPLACE). -struct ipt_replace { - // The name of the table. - char name[XT_TABLE_MAXNAMELEN]; - - // The same as struct ipt_getinfo.valid_hooks. Users don't change this. - unsigned int valid_hooks; - - // The same as struct ipt_getinfo.num_entries. - unsigned int num_entries; - - // The same as struct ipt_getinfo.size. - unsigned int size; - - // The same as struct ipt_getinfo.hook_entry. - unsigned int hook_entry[NF_IP_NUMHOOKS]; - - // The same as struct ipt_getinfo.underflow. - unsigned int underflow[NF_IP_NUMHOOKS]; - - // The number of counters, which should equal the number of entries. - unsigned int num_counters; - - // The unchanged values from each ipt_entry's counters. - struct xt_counters* counters; - - // The entries to write to the table. This will run past the size defined by - // sizeof(srtuct ipt_replace); - struct ipt_entry entries[0]; -}; - -#endif // GVISOR_TEST_SYSCALLS_IPTABLES_TYPES_H_ |