6f52b16c5b
Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
65 lines
2.4 KiB
C
65 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _NFNETLINK_COMPAT_H
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#define _NFNETLINK_COMPAT_H
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#include <linux/types.h>
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#ifndef __KERNEL__
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/* Old nfnetlink macros for userspace */
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/* nfnetlink groups: Up to 32 maximum */
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#define NF_NETLINK_CONNTRACK_NEW 0x00000001
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#define NF_NETLINK_CONNTRACK_UPDATE 0x00000002
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#define NF_NETLINK_CONNTRACK_DESTROY 0x00000004
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#define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008
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#define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010
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#define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020
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/* Generic structure for encapsulation optional netfilter information.
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* It is reminiscent of sockaddr, but with sa_family replaced
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* with attribute type.
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* ! This should someday be put somewhere generic as now rtnetlink and
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* ! nfnetlink use the same attributes methods. - J. Schulist.
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*/
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struct nfattr {
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__u16 nfa_len;
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__u16 nfa_type; /* we use 15 bits for the type, and the highest
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* bit to indicate whether the payload is nested */
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};
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/* FIXME: Apart from NFNL_NFA_NESTED shamelessly copy and pasted from
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* rtnetlink.h, it's time to put this in a generic file */
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#define NFNL_NFA_NEST 0x8000
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#define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff)
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#define NFA_ALIGNTO 4
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#define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1))
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#define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \
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&& (nfa)->nfa_len <= (len))
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#define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \
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(struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len)))
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#define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len))
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#define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len))
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#define NFA_DATA(nfa) ((void *)(((char *)(nfa)) + NFA_LENGTH(0)))
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#define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0))
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#define NFA_NEST(skb, type) \
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({ struct nfattr *__start = (struct nfattr *)skb_tail_pointer(skb); \
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NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \
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__start; })
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#define NFA_NEST_END(skb, start) \
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({ (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
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(skb)->len; })
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#define NFA_NEST_CANCEL(skb, start) \
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({ if (start) \
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skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
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-1; })
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#define NFM_NFA(n) ((struct nfattr *)(((char *)(n)) \
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+ NLMSG_ALIGN(sizeof(struct nfgenmsg))))
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#define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))
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#endif /* ! __KERNEL__ */
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#endif /* _NFNETLINK_COMPAT_H */
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