--- /dev/null
+/*
+ * Copyright (C) 2009 Luigi Rizzo, Marta Carbone, Universita` di Pisa
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * $Id: bsd_compat.c 4665 2010-01-04 12:35:39Z luigi $
+ *
+ * kernel variables and functions that are not available in linux.
+ */
+
+#include <sys/cdefs.h>
+#include <asm/div64.h> /* do_div on 2.4 */
+#include <linux/random.h> /* get_random_bytes on 2.4 */
+
+/*
+ * gettimeofday would be in sys/time.h but it is not
+ * visible if _KERNEL is defined
+ */
+int gettimeofday(struct timeval *, struct timezone *);
+
+int ticks; /* kernel ticks counter */
+int hz = 1000; /* default clock time */
+long tick = 1000; /* XXX is this 100000/hz ? */
+int bootverbose = 0;
+time_t time_uptime = 0;
+struct timeval boottime;
+
+int ip_defttl;
+int fw_one_pass = 1;
+u_long in_ifaddrhmask; /* mask for hash table */
+struct in_ifaddrhashhead *in_ifaddrhashtbl; /* inet addr hash table */
+
+u_int rt_numfibs = RT_NUMFIBS;
+
+/*
+ * pfil hook support.
+ * We make pfil_head_get return a non-null pointer, which is then ignored
+ * in our 'add-hook' routines.
+ */
+struct pfil_head;
+typedef int (pfil_hook_t)
+ (void *, struct mbuf **, struct ifnet *, int, struct inpcb *);
+
+struct pfil_head *
+pfil_head_get(int proto, u_long flags)
+{
+ static int dummy;
+ return (struct pfil_head *)&dummy;
+}
+
+int
+pfil_add_hook(pfil_hook_t *func, void *arg, int dir, struct pfil_head *h)
+{
+ return 0;
+}
+
+int
+pfil_remove_hook(pfil_hook_t *func, void *arg, int dir, struct pfil_head *h)
+{
+ return 0;
+}
+
+/* define empty body for kernel function */
+int
+priv_check(struct thread *td, int priv)
+{
+ return 0;
+}
+
+int
+securelevel_ge(struct ucred *cr, int level)
+{
+ return 0;
+}
+
+int
+sysctl_handle_int(SYSCTL_HANDLER_ARGS)
+{
+ return 0;
+}
+
+int
+sysctl_handle_long(SYSCTL_HANDLER_ARGS)
+{
+ return 0;
+}
+
+void
+ether_demux(struct ifnet *ifp, struct mbuf *m)
+{
+ return;
+}
+
+int
+ether_output_frame(struct ifnet *ifp, struct mbuf *m)
+{
+ return 0;
+}
+
+void
+in_rtalloc_ign(struct route *ro, u_long ignflags, u_int fibnum)
+{
+ return;
+}
+
+void
+icmp_error(struct mbuf *n, int type, int code, uint32_t dest, int mtu)
+{
+ return;
+}
+
+u_short
+in_cksum_skip(struct mbuf *m, int len, int skip)
+{
+ return 0;
+}
+
+u_short
+in_cksum_hdr(struct ip *ip)
+{
+ return 0;
+}
+
+/*
+ * we don't really reassemble, just return whatever we had.
+ */
+struct mbuf *
+ip_reass(struct mbuf *clone)
+{
+ return clone;
+}
+#ifdef INP_LOCK_ASSERT
+#undef INP_LOCK_ASSERT
+#define INP_LOCK_ASSERT(a)
+#endif
+
+/* credentials check */
+#include <netinet/ip_fw.h>
+int
+cred_check(void *_insn, int proto, struct ifnet *oif,
+ struct in_addr dst_ip, u_int16_t dst_port, struct in_addr src_ip,
+ u_int16_t src_port, struct bsd_ucred *u, int *ugid_lookupp,
+ struct sk_buff *skb)
+{
+ int match = 0;
+ ipfw_insn_u32 *insn = (ipfw_insn_u32 *)_insn;
+
+ if (*ugid_lookupp == 0) { /* actively lookup and copy in cache */
+ /* returns null if any element of the chain up to file is null.
+ * if sk != NULL then we also have a reference
+ */
+ *ugid_lookupp = linux_lookup(proto,
+ src_ip.s_addr, htons(src_port),
+ dst_ip.s_addr, htons(dst_port),
+ skb, oif ? 1 : 0, u);
+ }
+ if (*ugid_lookupp < 0)
+ return 0;
+
+ if (insn->o.opcode == O_UID)
+ match = (u->uid == (uid_t)insn->d[0]);
+ else if (insn->o.opcode == O_JAIL)
+ match = (u->xid == (uid_t)insn->d[0]);
+ else if (insn->o.opcode == O_GID)
+ match = (u->gid == (uid_t)insn->d[0]);
+ return match;
+}
+
+int
+jailed(struct ucred *cred)
+{
+ return 0;
+}
+
+/*
+* Return 1 if an internet address is for a ``local'' host
+* (one to which we have a connection). If subnetsarelocal
+* is true, this includes other subnets of the local net.
+* Otherwise, it includes only the directly-connected (sub)nets.
+*/
+int
+in_localaddr(struct in_addr in)
+{
+ return 1;
+}
+
+int
+sooptcopyout(struct sockopt *sopt, const void *buf, size_t len)
+{
+ size_t valsize = sopt->sopt_valsize;
+
+ if (len < valsize)
+ sopt->sopt_valsize = valsize = len;
+ bcopy(buf, sopt->sopt_val, valsize);
+ return 0;
+}
+
+/*
+ * copy data from userland to kernel
+ */
+int
+sooptcopyin(struct sockopt *sopt, void *buf, size_t len, size_t minlen)
+{
+ size_t valsize = sopt->sopt_valsize;
+
+ if (valsize < minlen)
+ return EINVAL;
+ if (valsize > len)
+ sopt->sopt_valsize = valsize = len;
+ bcopy(sopt->sopt_val, buf, valsize);
+ return 0;
+}
+
+void
+getmicrouptime(struct timeval *tv)
+{
+#ifdef _WIN32
+#else
+ do_gettimeofday(tv);
+#endif
+}
+
+
+#include <arpa/inet.h>
+
+char *
+inet_ntoa_r(struct in_addr ina, char *buf)
+{
+#ifdef _WIN32
+#else
+ unsigned char *ucp = (unsigned char *)&ina;
+
+ sprintf(buf, "%d.%d.%d.%d",
+ ucp[0] & 0xff,
+ ucp[1] & 0xff,
+ ucp[2] & 0xff,
+ ucp[3] & 0xff);
+#endif
+ return buf;
+}
+
+char *
+inet_ntoa(struct in_addr ina)
+{
+ static char buf[16];
+ return inet_ntoa_r(ina, buf);
+}
+
+int
+random(void)
+{
+#ifdef _WIN32
+ return 0x123456;
+#else
+ int r;
+ get_random_bytes(&r, sizeof(r));
+ return r & 0x7fffffff;
+#endif
+}
+
+
+/*
+ * do_div really does a u64 / u32 bit division.
+ * we save the sign and convert to uint befor calling.
+ * We are safe just because we always call it with small operands.
+ */
+int64_t
+div64(int64_t a, int64_t b)
+{
+#ifdef _WIN32
+ int a1 = a, b1 = b;
+ return a1/b1;
+#else
+ uint64_t ua, ub;
+ int sign = ((a>0)?1:-1) * ((b>0)?1:-1);
+
+ ua = ((a>0)?a:-a);
+ ub = ((b>0)?b:-b);
+ do_div(ua, ub);
+ return sign*ua;
+#endif
+}
+
+/*
+ * compact version of fnmatch.
+ */
+int
+fnmatch(const char *pattern, const char *string, int flags)
+{
+ char s;
+
+ if (!string || !pattern)
+ return 1; /* no match */
+ while ( (s = *string++) ) {
+ char p = *pattern++;
+ if (p == '\0') /* pattern is over, no match */
+ return 1;
+ if (p == '*') /* wildcard, match */
+ return 0;
+ if (p == '.' || p == s) /* char match, continue */
+ continue;
+ return 1; /* no match */
+ }
+ /* end of string, make sure the pattern is over too */
+ if (*pattern == '\0' || *pattern == '*')
+ return 0;
+ return 1; /* no match */
+}
+
+#ifdef _WIN32
+/*
+ * as good as anywhere, place here the missing calls
+ */
+
+void *
+my_alloc(int size)
+{
+ void *_ret = ExAllocatePoolWithTag(0, size, 'wfpi');
+ if (_ret)
+ memset(_ret, 0, size);
+ return _ret;
+}
+
+void
+panic(const char *fmt, ...)
+{
+ printf("%s", fmt);
+ for (;;);
+}
+
+#include <stdarg.h>
+
+extern int _vsnprintf(char *buf, int buf_size, char * fmt, va_list ap);
+
+/*
+ * Windows' _snprintf doesn't terminate buffer with zero if size > buf_size
+ */
+int
+snprintf(char *buf, int buf_size, char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ if (_vsnprintf(buf, buf_size, fmt, ap) < 0)
+ buf[buf_size - 1] = '\0';
+ va_end(ap);
+
+ return 0;
+}
+#endif
git://git.onelab.eu / ipfw.git / blobdiff