<commit_before>/*
 * linux/fs/lockd/host.c
 *
 * Management for NLM peer hosts. The nlm_host struct is shared
 * between client and server implementation. The only reason to
 * do so is to reduce code bloat.
 *
 * Copyright (C) 1996, <NAME> <<EMAIL>>
 */

#include <linux/types.h>
#include <linux/slab.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/lockd/lockd.h>
#include <linux/lockd/sm_inter.h>
#include <linux/mutex.h>

#include <net/ipv6.h>

#define NLMDBG_FACILITY		NLMDBG_HOSTCACHE
#define NLM_HOST_NRHASH		32
#define NLM_HOST_REBIND		(60 * HZ)
#define NLM_HOST_EXPIRE		(300 * HZ)
#define NLM_HOST_COLLECT	(120 * HZ)

static struct hlist_head	nlm_hosts[NLM_HOST_NRHASH];
static unsigned long		next_gc;
static int			nrhosts;
static DEFINE_MUTEX(nlm_host_mutex);

static void			nlm_gc_hosts(void);
static struct nsm_handle	*nsm_find(const struct sockaddr *sap,
						const size_t salen,
						const char *hostname,
						const size_t hostname_len,
						const int create);

struct nlm_lookup_host_info {
	const int		server;		/* search for server|client */
	const struct sockaddr	*sap;		/* address to search for */
	const size_t		salen;		/* it's length */
	const unsigned short	protocol;	/* transport to search for*/
	const u32		version;	/* NLM version to search for */
	const char		*hostname;	/* remote's hostname */
	const size_t		hostname_len;	/* it's length */
	const struct sockaddr	*src_sap;	/* our address (optional) */
	const size_t		src_len;	/* it's length */
	const int		noresvport;	/* use non-priv port */
};

/*
 * Hash function must work well on big- and little-endian platforms
 */
static unsigned int __nlm_hash32(const __be32 n)
{
	unsigned int hash = (__force u32)n ^ ((__force u32)n >> 16);
	return hash ^ (hash >> 8);
}

static unsigned int __nlm_hash_addr4(const struct sockaddr *sap)
{
	const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
	return __nlm_hash32(sin->sin_addr.s_addr);
}

static unsigned int __nlm_hash_addr6(const struct sockaddr *sap)
{
	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
	const struct in6_addr addr = sin6->sin6_addr;
	return __nlm_hash32(addr.s6_addr32[0]) ^
	       __nlm_hash32(addr.s6_addr32[1]) ^
	       __nlm_hash32(addr.s6_addr32[2]) ^
	       __nlm_hash32(addr.s6_addr32[3]);
}

static unsigned int nlm_hash_address(const struct sockaddr *sap)
{
	unsigned int hash;

	switch (sap->sa_family) {
	case AF_INET:
		hash = __nlm_hash_addr4(sap);
		break;
	case AF_INET6:
		hash = __nlm_hash_addr6(sap);
		break;
	default:
		hash = 0;
	}
	return hash & (NLM_HOST_NRHASH - 1);
}

static void nlm_clear_port(struct sockaddr *sap)
{
	switch (sap->sa_family) {
	case AF_INET:
		((struct sockaddr_in *)sap)->sin_port = 0;
		break;
	case AF_INET6:
		((struct sockaddr_in6 *)sap)->sin6_port = 0;
		break;
	}
}

static void nlm_display_address(const struct sockaddr *sap,
				char *buf, const size_t len)
{
	const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;

	switch (sap->sa_family) {
	case AF_UNSPEC:
		snprintf(buf, len, "unspecified");
		break;
	case AF_INET:
		snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);
		break;
	case AF_INET6:
		if (ipv6_addr_v4mapped(&sin6->sin6_addr))
			snprintf(buf, len, "%pI4",
				 &sin6->sin6_addr.s6_addr32[3]);
		else
			snprintf(buf, len, "%pI6", &sin6->sin6_addr);<commit_msg>NLM: Remove AF_UNSPEC arm in nlm_display_address()<commit_after>/*
 * linux/fs/lockd/host.c
 *
 * Management for NLM peer hosts. The nlm_host struct is shared
 * between client and server implementation. The only reason to
 * do so is to reduce code bloat.
 *
 * Copyright (C) 1996, <NAME> <<EMAIL>>
 */

#include <linux/types.h>
#include <linux/slab.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/lockd/lockd.h>
#include <linux/lockd/sm_inter.h>
#include <linux/mutex.h>

#include <net/ipv6.h>

#define NLMDBG_FACILITY		NLMDBG_HOSTCACHE
#define NLM_HOST_NRHASH		32
#define NLM_HOST_REBIND		(60 * HZ)
#define NLM_HOST_EXPIRE		(300 * HZ)
#define NLM_HOST_COLLECT	(120 * HZ)

static struct hlist_head	nlm_hosts[NLM_HOST_NRHASH];
static unsigned long		next_gc;
static int			nrhosts;
static DEFINE_MUTEX(nlm_host_mutex);

static void			nlm_gc_hosts(void);
static struct nsm_handle	*nsm_find(const struct sockaddr *sap,
						const size_t salen,
						const char *hostname,
						const size_t hostname_len,
						const int create);

struct nlm_lookup_host_info {
	const int		server;		/* search for server|client */
	const struct sockaddr	*sap;		/* address to search for */
	const size_t		salen;		/* it's length */
	const unsigned short	protocol;	/* transport to search for*/
	const u32		version;	/* NLM version to search for */
	const char		*hostname;	/* remote's hostname */
	const size_t		hostname_len;	/* it's length */
	const struct sockaddr	*src_sap;	/* our address (optional) */
	const size_t		src_len;	/* it's length */
	const int		noresvport;	/* use non-priv port */
};

/*
 * Hash function must work well on big- and little-endian platforms
 */
static unsigned int __nlm_hash32(const __be32 n)
{
	unsigned int hash = (__force u32)n ^ ((__force u32)n >> 16);
	return hash ^ (hash >> 8);
}

static unsigned int __nlm_hash_addr4(const struct sockaddr *sap)
{
	const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
	return __nlm_hash32(sin->sin_addr.s_addr);
}

static unsigned int __nlm_hash_addr6(const struct sockaddr *sap)
{
	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
	const struct in6_addr addr = sin6->sin6_addr;
	return __nlm_hash32(addr.s6_addr32[0]) ^
	       __nlm_hash32(addr.s6_addr32[1]) ^
	       __nlm_hash32(addr.s6_addr32[2]) ^
	       __nlm_hash32(addr.s6_addr32[3]);
}

static unsigned int nlm_hash_address(const struct sockaddr *sap)
{
	unsigned int hash;

	switch (sap->sa_family) {
	case AF_INET:
		hash = __nlm_hash_addr4(sap);
		break;
	case AF_INET6:
		hash = __nlm_hash_addr6(sap);
		break;
	default:
		hash = 0;
	}
	return hash & (NLM_HOST_NRHASH - 1);
}

static void nlm_clear_port(struct sockaddr *sap)
{
	switch (sap->sa_family) {
	case AF_INET:
		((struct sockaddr_in *)sap)->sin_port = 0;
		break;
	case AF_INET6:
		((struct sockaddr_in6 *)sap)->sin6_port = 0;
		break;
	}
}

static void nlm_display_address(const struct sockaddr *sap,
				char *buf, const size_t len)
{
	const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;

	switch (sap->sa_family) {
	case AF_INET:
		snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);
		break;
	case AF_INET6:
		if (ipv6_addr_v4mapped(&sin6->sin6_addr))
			snprintf(buf, len, "%pI4",
				 &sin6->sin6_addr.s6_addr32[3]);
		else
			snprintf(buf, len, "%pI6", &sin6->sin6_addr);
{'fraction_non_alphanumeric': 0.12015164771070283, 'fraction_numerical': 0.026829979585885098, 'mean_word_length': 4.223914699162224, 'pattern_counts': {'":': 0, '<': 29, '<?xml version=': 0, '>': 59, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '3166934', 'n_tokens_mistral': 2885, 'n_tokens_neox': 2719, 'n_words': 682}