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path: root/fs/nfsd/nfs3acl.c
AgeCommit message (Expand)Author
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman
2017-05-15sunrpc: mark all struct svc_version instances as constChristoph Hellwig
2017-05-15sunrpc: mark all struct svc_procinfo instances as constChristoph Hellwig
2017-05-15sunrpc: move pc_count out of struct svc_procinfoChristoph Hellwig
2017-05-15sunrpc: properly type pc_encode callbacksChristoph Hellwig
2017-05-15sunrpc: properly type pc_decode callbacksChristoph Hellwig
2017-05-15sunrpc: properly type pc_release callbacksChristoph Hellwig
2017-05-15sunrpc: properly type pc_func callbacksChristoph Hellwig
2017-05-15nfsd: use named initializers in PROC()Christoph Hellwig
2017-02-24sunrpc: turn bitfield flags in svc_version into boolsJeff Layton
2016-06-24nfsd: check permissions when setting ACLsBen Hutchings
2015-07-20nfsd: Add macro NFS_ACL_MASK for ACLKinglong Mee
2015-04-15VFS: normal filesystems (and lustre): d_inode() annotationsDavid Howells
2014-07-11NFSD: Check acl returned from get_acl/posix_acl_from_modeKinglong Mee
2014-05-22nfsd: Remove assignments inside conditionsBenoit Taine
2014-01-26nfsd: use get_acl and ->set_aclChristoph Hellwig
2012-12-17nfsd4: cleanup: replace rq_resused count by rq_next_page pointerJ. Bruce Fields
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking imp...Tejun Heo
2009-12-15nfsd: remove pointless paths in file headersJ. Bruce Fields
2009-12-14nfsd: Move private headers to source directoryBoaz Harrosh
2009-12-14nfsd: Source files #include cleanupsBoaz Harrosh
2009-11-13nfsd: make fs/nfsd/vfs.h for common includesJ. Bruce Fields
2009-11-04nfsd: register NFS_ACL with rpcbindPeter Staubach
2008-06-23nfsd: rename MAY_ flagsMiklos Szeredi
2007-11-12knfsd: fix spurious EINVAL errors on first access of new filesystemJ. Bruce Fields
2006-12-08[PATCH] NFS3: Calculate 'w' a bit later in nfs3svc_encode_getaclres()Jesper Juhl
2006-10-20[PATCH] nfsd: NFSv{2,3} trivial endianness annotations for error valuesAl Viro
2006-10-20[PATCH] xdr annotations: NFSv3 serverAl Viro
2006-10-20[PATCH] fix svc_procfunc declarationAl Viro
2006-10-04[PATCH] knfsd: register all RPC programs with portmapper by defaultOlaf Kirch
2006-10-04[PATCH] knfsd: Replace two page lists in struct svc_rqst with oneNeilBrown
2005-12-20[PATCH] nfsd: check for read-only exports before setting aclsAndreas Gruenbacher
2005-06-22[PATCH] NFSD: Add server support for NFSv3 ACLs.Andreas Gruenbacher
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/*
 * net/sched/cls_flow.c		Generic flow classifier
 *
 * Copyright (c) 2007, 2008 Patrick McHardy <kaber@trash.net>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/jhash.h>
#include <linux/random.h>
#include <linux/pkt_cls.h>
#include <linux/skbuff.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/if_vlan.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <net/inet_sock.h>

#include <net/pkt_cls.h>
#include <net/ip.h>
#include <net/route.h>
#include <net/flow_dissector.h>

#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
#include <net/netfilter/nf_conntrack.h>
#endif

struct flow_head {
	struct list_head	filters;
	struct rcu_head		rcu;
};

struct flow_filter {
	struct list_head	list;
	struct tcf_exts		exts;
	struct tcf_ematch_tree	ematches;
	struct tcf_proto	*tp;
	struct timer_list	perturb_timer;
	u32			perturb_period;
	u32			handle;

	u32			nkeys;
	u32			keymask;
	u32			mode;
	u32			mask;
	u32			xor;
	u32			rshift;
	u32			addend;
	u32			divisor;
	u32			baseclass;
	u32			hashrnd;
	struct rcu_head		rcu;
};

static inline u32 addr_fold(void *addr)
{
	unsigned long a = (unsigned long)addr;

	return (a & 0xFFFFFFFF) ^ (BITS_PER_LONG > 32 ? a >> 32 : 0);
}

static u32 flow_get_src(const struct sk_buff *skb, const struct flow_keys *flow)
{
	__be32 src = flow_get_u32_src(flow);

	if (src)
		return ntohl(src);

	return addr_fold(skb->sk);
}

static u32 flow_get_dst(const struct sk_buff *skb, const struct flow_keys *flow)
{
	__be32 dst = flow_get_u32_dst(flow);

	if (dst)
		return ntohl(dst);

	return addr_fold(skb_dst(skb)) ^ (__force u16) tc_skb_protocol(skb);
}

static u32 flow_get_proto(const struct sk_buff *skb, const struct flow_keys *flow)
{
	return flow->basic.ip_proto;
}

static u32 flow_get_proto_src(const struct sk_buff *skb, const struct flow_keys *flow)
{
	if (flow->ports.ports)
		return ntohs(flow->ports.src);

	return addr_fold(skb->sk);
}

static u32 flow_get_proto_dst(const struct sk_buff *skb, const struct flow_keys *flow)
{
	if (flow->ports.ports)
		return ntohs(flow->ports.dst);

	return addr_fold(skb_dst(skb)) ^ (__force u16) tc_skb_protocol(skb);
}

static u32 flow_get_iif(const struct sk_buff *skb)
{
	return skb->skb_iif;
}

static u32 flow_get_priority(const struct sk_buff *skb)
{
	return skb->priority;
}

static u32 flow_get_mark(const struct sk_buff *skb)
{
	return skb->mark;
}

static u32 flow_get_nfct(const struct sk_buff *skb)
{
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
	return addr_fold(skb->nfct);
#else
	return 0;
#endif
}

#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
#define CTTUPLE(skb, member)						\
({									\
	enum ip_conntrack_info ctinfo;					\
	const struct nf_conn *ct = nf_ct_get(skb, &ctinfo);		\
	if (ct == NULL)							\
		goto fallback;						\
	ct->tuplehash[CTINFO2DIR(ctinfo)].tuple.member;			\
})
#else
#define CTTUPLE(skb, member)						\
({									\
	goto fallback;							\
	0;								\
})
#endif

static u32 flow_get_nfct_src(const struct sk_buff *skb, const struct flow_keys *flow)
{
	switch (tc_skb_protocol(skb)) {
	case htons(ETH_P_IP):
		return ntohl(CTTUPLE(skb, src.u3.ip));
	case htons(ETH_P_IPV6):
		return ntohl(CTTUPLE(skb, src.u3.ip6[3]));
	}
fallback:
	return flow_get_src(skb, flow);
}

static u32 flow_get_nfct_dst(const struct sk_buff *skb, const struct flow_keys *flow)
{
	switch (tc_skb_protocol(skb)) {
	case htons(ETH_P_IP):
		return ntohl(CTTUPLE(skb, dst.u3.ip));
	case htons(ETH_P_IPV6):
		return ntohl(CTTUPLE(skb, dst.u3.ip6[3]));
	}
fallback:
	return flow_get_dst(skb, flow);
}

static u32 flow_get_nfct_proto_src(const struct sk_buff *skb, const struct flow_keys *flow)
{
	return ntohs(CTTUPLE(skb, src.u.all));
fallback:
	return flow_get_proto_src(skb, flow);
}

static u32 flow_get_nfct_proto_dst(const struct sk_buff *skb, const struct flow_keys *flow)
{
	return ntohs(CTTUPLE(skb, dst.u.all));
fallback:
	return flow_get_proto_dst(skb, flow);
}

static u32 flow_get_rtclassid(const struct sk_buff *skb)
{
#ifdef CONFIG_IP_ROUTE_CLASSID
	if (skb_dst(skb))
		return skb_dst(skb)->tclassid;
#endif
	return 0;
}

static u32 flow_get_skuid(const struct sk_buff *skb)
{
	struct sock *sk = skb_to_full_sk(skb);

	if (sk && sk->sk_socket && sk->sk_socket->file) {
		kuid_t skuid = sk->sk_socket->file->f_cred->fsuid;

		return from_kuid(&init_user_ns, skuid);
	}
	return 0;
}

static u32 flow_get_skgid(const struct sk_buff *skb)
{
	struct sock *sk = skb_to_full_sk(skb);

	if (sk && sk->sk_socket && sk->sk_socket->file) {
		kgid_t skgid = sk->sk_socket->file->f_cred->fsgid;

		return from_kgid(&init_user_ns, skgid);
	}
	return </