From: Philip Homburg <philip@cs.vu.nl>
Date: Thu, 2 Oct 2008 13:45:46 +0000 (+0000)
Subject: Minix 3 version
X-Git-Tag: v3.1.4~231
X-Git-Url: http://zhaoyanbai.com/repos/icons/static/man.3.ps?a=commitdiff_plain;h=5b5b54c76cc2f9b66eb7f3a14ca13b5ed8947b97;p=minix.git

Minix 3 version
---

diff --git a/commands/swifi/Makefile b/commands/swifi/Makefile
index def034b7c..7197e0dbf 100644
--- a/commands/swifi/Makefile
+++ b/commands/swifi/Makefile
@@ -1,25 +1,20 @@
-#
-# Makefile for the nooks.
-#
-# Note! Dependencies are done automagically by 'make dep', which also
-# removes any old dependencies. DON'T put your own dependencies here
-# unless it's something special (ie not a .c file).
-#
-# Note 2! The CFLAGS definitions are now in the main makefile...
+OBJ=systest.o fault_model.o extra.o db_sym.o db_disasm.o db_access.o read_nlist.o
+OBJ_RND=rnd.o
+OBJ_SOCKET=socket.o
 
-O_TARGET := swifi.o
+DEFINES=-DCONFIG_SWIFI
+CFLAGS=$(DEFINES)
 
-# All of the (potential) objects that export symbols.
-# This list comes from 'grep -l EXPORT_SYMBOL *.[hc]'.
+all:	swifi rnd socket
 
-export-objs = swifi-ksyms.o
+swifi:	$(OBJ)
+	$(CC) -o swifi $(OBJ)
 
-obj-$(CONFIG_SWIFI) +=  db_sym.o db_disasm.o db_access.o \
-			random.o fault_model.o swifi-ksyms.o
+rnd:	$(OBJ_RND)
+	$(CC) -o $@ $(OBJ_RND)
 
-# db_interface.o 
-
-include $(TOPDIR)/Rules.make
-
-fastdep:
+socket:	$(OBJ_SOCKET)
+	$(CC) -o $@ $(OBJ_SOCKET)
 
+clean:
+	rm -f swifi $(OBJ)
diff --git a/commands/swifi/do_swifi b/commands/swifi/do_swifi
new file mode 100644
index 000000000..3616c9087
--- /dev/null
+++ b/commands/swifi/do_swifi
@@ -0,0 +1,4 @@
+#!/bin/sh
+pid=`ps ax | grep fxp | grep usr.sbin | sed 's,^[ 	]*,,;s,[ 	].*,,`
+echo "pid = $pid"
+./swifi -f /usr/build/drivers/fxp/fxp $pid 26 100 4
diff --git a/commands/swifi/do_swifi_bug1 b/commands/swifi/do_swifi_bug1
new file mode 100644
index 000000000..bd5c825f4
--- /dev/null
+++ b/commands/swifi/do_swifi_bug1
@@ -0,0 +1,4 @@
+#!/bin/sh
+pid=`ps ax | grep fxp | grep usr.sbin | sed 's,^[ 	]*,,;s,[ 	].*,,`
+echo "pid = $pid"
+./swifi -f /usr/build/drivers/fxp/fxp $pid 8 100 4
diff --git a/commands/swifi/extra.c b/commands/swifi/extra.c
new file mode 100644
index 000000000..b8233f69e
--- /dev/null
+++ b/commands/swifi/extra.c
@@ -0,0 +1,250 @@
+/*
+Declaration for Linux kernel compatibility
+*/
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+
+#include "extra.h"
+
+pid_t victim_pid= -1;
+char *victim_exe= NULL;
+
+#define TRAP_BIT	(0x80000000)
+
+static struct nlist *exe_nlist;
+static int exe_nlist_n;
+
+/* unsigned long __get_free_page(int type) { assert(0); } */
+/* void *kmalloc(size_t size, int type) { assert(0); } */
+void free_page(unsigned long page) { assert(0); }
+/* void kfree(void *mem) { assert(0); } */
+void vfree(void *mem) { assert(0); }
+
+size_t strncpy_from_user(char *addr, const char *user_name, size_t size)
+{ assert(0); }
+
+/* void lock_kernel(void) { assert(0); } */
+/* void unlock_kernel(void) { assert(0); } */
+void __asm__(char *str) { assert(0); }
+
+extern void *__vmalloc(unsigned long size, int gfp_mask, pgprot_t prot)
+{ assert(0); }
+
+#if 0
+void kallsyms_sections(void *infop,
+	int (*fp)(void *token, const char *modname, const char *secname,
+	      ElfW(Addr) secstart, ElfW(Addr) secend, ElfW(Word) secflags))
+{ assert(0); }
+#endif
+
+unsigned long __generic_copy_to_user(void *x, const void *y, unsigned long z)
+{ assert(0); }
+unsigned long __generic_copy_from_user(void *x, const void *y, unsigned long z)
+{ assert(0); }
+
+/* void read_lock(struct lock *lock) { assert(0); } */
+/* void read_unlock(struct lock *lock) { assert(0); } */
+void udelay(unsigned long usecs) { assert(0); }
+int copy_to_user(void * result_record, void *res, size_t size)
+{
+	memcpy(result_record, res, size);
+	return 0;
+}
+
+void panic(char *str) { assert(0); }
+
+void printk(char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	va_end(ap);
+}
+
+int kallsyms_address_to_symbol(db_expr_t off,
+    const char * *mod_name, unsigned long *mod_start, unsigned long *mod_end, 
+    const char * *sec_name, unsigned long *sec_start, unsigned long *sec_end, 
+    const char * *sym_name, unsigned long *sym_start, unsigned long *sym_end)
+{
+	static char name[sizeof(((struct nlist *)0)->n_name)+1];
+
+	int i;
+	unsigned long btext, etext;
+	struct nlist *below, *above;
+
+	off &= ~TRAP_BIT;
+	load_nlist(victim_exe, &btext, &etext);
+	below= above= NULL;
+	for (i= 0; i<exe_nlist_n; i++)
+	{
+		if ((exe_nlist[i].n_sclass & N_SECT) != N_TEXT)
+			continue;
+		if (exe_nlist[i].n_value <= off)
+		{
+			if (!below || exe_nlist[i].n_value > below->n_value)
+				below= &exe_nlist[i];
+		}
+		if (exe_nlist[i].n_value > off)
+		{
+			if (!above || exe_nlist[i].n_value < above->n_value)
+				above= &exe_nlist[i];
+		}
+	}
+#if 0
+	if (below)
+	{
+		printf("found '%.*s' at 0x%x\n", sizeof(below->n_name),
+			below->n_name, below->n_value);
+	}
+	if (above)
+	{
+		printf("found '%.*s' at 0x%x\n", sizeof(above->n_name),
+			above->n_name, above->n_value);
+	}
+#endif
+
+	btext |= TRAP_BIT;
+	etext |= TRAP_BIT;
+
+	*mod_name = victim_exe;
+	*mod_start = btext;
+	*mod_end = etext;
+	*sec_name = ".text";
+	*sec_start = btext;
+	*sec_end = etext;
+
+	assert(below && above);
+
+	memcpy(name, below->n_name, sizeof(below->n_name));
+	name[sizeof(below->n_name)]= '\0';
+	*sym_name= name;
+
+	*sym_start= below->n_value | TRAP_BIT;
+	*sym_end= above->n_value | TRAP_BIT;
+
+	return 1;
+}
+
+struct module *module_list;
+struct task_struct *task_list;
+struct lock tasklist_lock;
+
+unsigned long text_read_ul(void *addr)
+{
+	int i;
+	unsigned long value;
+
+	for (i= 0; i<sizeof(value); i++)
+	{
+		((unsigned char *)&value)[i]= text_read_ub((char *)addr+i);
+	}
+	return value;
+}
+
+unsigned char text_read_ub(void *addr)
+{
+	int v;
+	unsigned long vaddr;
+
+	vaddr= (unsigned long)addr;
+	vaddr &= ~TRAP_BIT;
+	v= ptrace(T_READB_INS, victim_pid, vaddr, 0);
+	if (v < 0)
+	{
+		fprintf(stderr,
+	"text_read_ub: trace T_READB_INS failed on pid %d, addr 0x%x: %s\n",
+			victim_pid, vaddr, strerror(errno));
+		exit(1);
+	}
+	return v;
+}
+
+void text_write_ul(void *addr, unsigned long value)
+{
+	int i;
+
+	for (i= 0; i<sizeof(value); i++)
+	{
+		text_write_ub((char *)addr+i, ((unsigned char *)&value)[i]);
+	}
+}
+
+void text_write_ub(void *addr, unsigned char value)
+{
+	int v;
+	unsigned long vaddr;
+
+	vaddr= (unsigned long)addr;
+	vaddr &= ~TRAP_BIT;
+	v= ptrace(T_WRITEB_INS, victim_pid, vaddr, value);
+	if (v < 0)
+	{
+		fprintf(stderr,
+	"text_read_ub: trace T_WRITEB_INS failed on pid %d, addr 0x%x: %s\n",
+			victim_pid, vaddr, strerror(errno));
+		exit(1);
+	}
+}
+
+void load_nlist(exe_name, btextp, etextp)
+char *exe_name;
+unsigned long *btextp;
+unsigned long *etextp;
+{
+	int i;
+	unsigned long btext, etext;
+
+	if (!exe_nlist)
+	{
+		exe_nlist_n= read_nlist(exe_name, &exe_nlist);
+		if (exe_nlist_n <= 0)
+		{
+			if (exe_nlist_n == -1)
+			{
+				fprintf(stderr,
+				"error reading name list from '%s': %s\n",
+					exe_name, strerror(errno));
+			}
+			else
+				fprintf(stderr, "no name list in '%s'\n",
+					exe_name);
+			exit(1);
+		}
+	}
+
+	if (!btextp && !etextp)
+		return;
+
+	etext= 0;
+	btext= (unsigned long)-1;
+	for (i= 0; i<exe_nlist_n; i++)
+	{
+		if ((exe_nlist[i].n_sclass & N_SECT) != N_TEXT)
+			continue;
+		if (exe_nlist[i].n_value < btext)
+			btext= exe_nlist[i].n_value;
+		if (exe_nlist[i].n_value > etext)
+			etext= exe_nlist[i].n_value;
+	}
+
+	if (btext >= etext)
+	{
+		fprintf(stderr, "Bad btext (0x%x) or etext (0x%x) in %d\n",
+			btext, etext, exe_name);
+		exit(1);
+	}
+
+	btext |= TRAP_BIT;
+	etext |= TRAP_BIT;
+
+	if (btextp)
+		*btextp= btext;
+	if (etextp)
+		*etextp= etext;
+}
diff --git a/commands/swifi/extra.h b/commands/swifi/extra.h
new file mode 100644
index 000000000..ddd4b241f
--- /dev/null
+++ b/commands/swifi/extra.h
@@ -0,0 +1,96 @@
+/*
+Compatibility with the linux kernel environment 
+*/
+
+#include <a.out.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+
+#if 0
+struct module
+{
+	struct module *next;
+	char *name;
+};
+extern struct module *module_list;
+#endif
+
+struct thread
+{
+	unsigned long esp;
+};
+
+struct task_struct
+{
+	struct thread thread;
+	struct task_struct *next;
+};
+
+unsigned long __get_free_page(int type);
+void *kmalloc(size_t size, int type);
+#define GFP_KERNEL 1
+void free_page(unsigned long page);
+void kfree(void *mem);
+void vfree(void *mem);
+
+size_t strncpy_from_user(char *addr, const char *user_name, size_t size);
+
+void lock_kernel(void);
+void unlock_kernel(void);
+
+void __asm__(char *str);
+
+#define for_each_task(t) for(t= task_list; t; t=t->next)
+extern struct task_struct *task_list;
+
+typedef struct { int foo; } pgprot_t;
+extern void *__vmalloc(unsigned long size, int gfp_mask, pgprot_t prot);
+
+#define ElfW(type) Elf_ ## type
+typedef unsigned long Elf_Addr;
+typedef unsigned long Elf_Word;
+
+void kallsyms_sections(void *infop,
+	int (*fp)(void *token, const char *modname, const char *secname,
+	      ElfW(Addr) secstart, ElfW(Addr) secend, ElfW(Word) secflags));
+
+unsigned long __generic_copy_to_user(void *, const void *, unsigned long);
+unsigned long __generic_copy_from_user(void *, const void *, unsigned long);
+
+struct lock { int dummy; };
+extern struct lock tasklist_lock;
+void read_lock(struct lock *lock);
+void read_unlock(struct lock *lock);
+
+void udelay(unsigned long usecs);
+
+int copy_to_user(void * result_record, void *res, size_t size);
+
+void panic(char *str);
+
+#define PAGE_SIZE	(0x1000)
+#define PAGE_MASK	(0x0fff)
+#define PAGE_OFFSET	0	/* What does this do? */
+#define TASK_SIZE	0	/* What does this do? */
+
+void printk(char *fmt, ...);
+
+#include "ddb.h"
+#include "db_machdep.h"
+int kallsyms_address_to_symbol(db_expr_t off,
+    const char * *mod_name, unsigned long *mod_start, unsigned long *mod_end, 
+    const char * *sec_name, unsigned long *sec_start, unsigned long *sec_end, 
+    const char * *sym_name, unsigned long *sym_start, unsigned long *sym_end);
+
+int read_nlist(const char *filenamer, struct nlist **nlist_table);
+
+unsigned long text_read_ul(void *addr);
+unsigned char text_read_ub(void *addr);
+void text_write_ul(void *addr, unsigned long value);
+void text_write_ub(void *addr, unsigned char value);
+
+extern pid_t victim_pid;
+extern char *victim_exe;
+
+void load_nlist(char *exe_name, unsigned long *btextp, unsigned long *etextp);
diff --git a/commands/swifi/fault_model.c b/commands/swifi/fault_model.c
index 79326e946..0576031bd 100644
--- a/commands/swifi/fault_model.c
+++ b/commands/swifi/fault_model.c
@@ -44,6 +44,7 @@
  * - use after free
  */
 
+#if 0
 #include <linux/kernel.h>
 #include <linux/kallsyms.h>
 #include <linux/module.h>
@@ -54,10 +55,13 @@
 #include <asm/uaccess.h>
 #include <asm/delay.h>
 #include <asm/page.h>
+#endif
 #include "ddb.h"
 #include "db_sym.h"
 #include "swifi.h"
 
+#include "extra.h"
+
 
 #define CRASH_INTERVAL	8192
 #define FI_MASK			0xfff
@@ -75,7 +79,7 @@ unsigned long faultType;
 unsigned long numFaults;
 char *crashAddr=0;		        /* track current malloc */
 int crashToggle=1;
-int text_fault(struct module * module, pswifi_result_t res);
+int text_fault(char *mod_name, pswifi_result_t res);
 int stack_fault(pswifi_result_t res);
 int heap_fault(pswifi_result_t res);
 int direct_fault(int fault_address, int fault_content, pswifi_result_t res);
@@ -90,12 +94,15 @@ do { \
       printk( KERN_ALERT "SWIFI: " fmt, ## args); \
 } while (0)
 #else
-#define PDEBUG(fmt, args...)
+#include <stdio.h>
+#define PDEBUG(args) /* (printf args) */
 #endif
 
+#define inline
 
 #ifdef CONFIG_SWIFI
 
+#if 0
 static inline long
 get_mod_name(const char *user_name, char **buf)
 {
@@ -125,6 +132,7 @@ put_mod_name(char *buf)
 {
 	free_page((unsigned long)buf);
 }
+#endif
 
 long 
 sys_inject_fault(char * module_name,
@@ -138,7 +146,9 @@ sys_inject_fault(char * module_name,
   unsigned long fault_address = 0; 
   unsigned long fault_data = 0 ; 
   char * kern_name = NULL;
+#if 0
   struct module * mod = NULL;
+#endif
   int found = 0;
   pswifi_result_t res = NULL;
 
@@ -146,27 +156,30 @@ sys_inject_fault(char * module_name,
     result = -E2BIG;
     goto Cleanup;
   }
-  res = (pswifi_result_t) kmalloc((1+argNumFaults) * sizeof(swifi_result_t), 
-				  GFP_KERNEL);
+  res = (pswifi_result_t) malloc((1+argNumFaults) * sizeof(swifi_result_t));
   if (res == NULL) {
     result = -ENOMEM;
     goto Cleanup;
   }
   memset(res, 0, (1 + argNumFaults) * sizeof(swifi_result_t));
   
-  //
+  /*
   // Capture the name of the module from usermode
-  //
+  */
 
+#if 0
   result = get_mod_name(module_name, &kern_name);
   if (result < 0) {
     goto Cleanup;
   }
+#endif
 
+  kern_name= module_name;
 
 
 
 
+#if 0
     lock_kernel();
 
     for (mod = module_list; mod ; mod = mod->next) {
@@ -180,6 +193,7 @@ sys_inject_fault(char * module_name,
       result = -ENOENT;
       goto Cleanup;
     }
+#endif
 		
   numFaults = argNumFaults;
   faultType = argFaultType;
@@ -204,16 +218,16 @@ sys_inject_fault(char * module_name,
   } else if (faultType == DIRECT_FAULT) {
     fault_address = numFaults;
     fault_data = randomSeed;
-    PDEBUG("sys inject fault, type %ld, addr=%lx, flip bit%lx\n", 
-	   faultType, fault_address, fault_data);
+    PDEBUG(("sys inject fault, type %ld, addr=%lx, flip bit%lx\n", 
+	   faultType, fault_address, fault_data));
   } else if (faultType == DIRECT_FAULT1) {
     fault_address = numFaults;
     fault_data = randomSeed;
-    PDEBUG("sys inject fault, type %ld, addr=%lx, zero bytes %lx\n", 
-	   faultType, fault_address, fault_data);
+    PDEBUG(("sys inject fault, type %ld, addr=%lx, zero bytes %lx\n", 
+	   faultType, fault_address, fault_data));
   } else {
-    PDEBUG("sys inject fault, type %ld, seed=%ld, fault=%ld, config=%ld\n", 
-	   faultType, randomSeed, numFaults, config);
+    PDEBUG(("sys inject fault, type %ld, seed=%ld, fault=%ld\n", 
+	   faultType, randomSeed, numFaults));
   }
   faultInjected=1;
   
@@ -232,7 +246,7 @@ sys_inject_fault(char * module_name,
   switch(faultType)
     {
     case TEXT_FAULT: 
-      result = text_fault(mod, res); 
+      result = text_fault(module_name, res); 
       break;
     case STACK_FAULT: 
       result = stack_fault(res); 
@@ -249,7 +263,7 @@ sys_inject_fault(char * module_name,
     case LOOP_FAULT: 
     case INTERFACE_FAULT: 
     case IRQ_FAULT:
-      result = text_fault(mod, res); 
+      result = text_fault(module_name, res); 
       break;
     case FREE_FAULT: 
     case BCOPY_FAULT: 
@@ -295,36 +309,38 @@ sys_inject_fault(char * module_name,
 	
 	addr1 = (unsigned long *) 0xf0212000;
 	addr2 = (unsigned long *) 0xf0212010;
-	PDEBUG("%p=%lx, %p=%lx\n", addr1, *addr1, addr2, *addr2);
+	PDEBUG(("%p=%lx, %p=%lx\n", addr1, *addr1, addr2, *addr2));
 	__asm__ ("movl $0xf0212000, %eax\n\t" \
 		 "movl $6, 0(%eax)\n\t" \
 		 "movl $6, 4(%eax)\n\t");
 	addr1 = (unsigned long *) 0xf0212000;
 	addr2 = (unsigned long *) 0xf0212010;
-	PDEBUG("after injecting fault\n");
-	PDEBUG("%p=%lx, %p=%lx\n", addr1, *addr1, addr2, *addr2);
+	PDEBUG(("after injecting fault\n"));
+	PDEBUG(("%p=%lx, %p=%lx\n", addr1, *addr1, addr2, *addr2));
 	result = 0;
 	break;
       }
     
     case DEBUGGER_FAULT: 
-      PDEBUG("Debugger fault"); 
+      PDEBUG(("Debugger fault"));
       __asm__ ("movl %cr4, %ecx\n\t" \
 	       "movl $42, %ecx; .byte 0x0f, 0x32\n\t" \
 	       "movl $377, %ecx; .byte 0x0f, 0x32\n\t");
       result = 0;
       break;
-    default: PDEBUG("unknown fault type %ld\n", faultType); break;
+    default: PDEBUG(("unknown fault type %ld\n", faultType)); break;
     }
   if (copy_to_user(result_record, res, argNumFaults * sizeof(swifi_result_t))) {
     result = -EFAULT;
   }
  Cleanup:
+#if 0
   if (kern_name != NULL) {
     put_mod_name(kern_name);
   }
+#endif
   if (res != NULL) {
-    kfree(res);
+    free(res);
   }
 
   return (result);
@@ -334,10 +350,10 @@ int while1(void)
 {
   int i=0;
 
-  PDEBUG("entering into while 1 loop\n");
+  PDEBUG(("entering into while 1 loop\n"));
   while(1) { 
     udelay(20000); 
-    PDEBUG("delay %4d secs, cpl=0x%x, ipend=0x%x\n", i+=5, 20, 30); 
+    PDEBUG(("delay %4d secs, cpl=0x%x, ipend=0x%x\n", i+=5, 20, 30)); 
     if(i>(100 * 2500)) 
       break;
   }
@@ -353,7 +369,7 @@ int direct_fault(int fault_address, int fault_content, pswifi_result_t res)
 
   addr = (unsigned long *) (PAGE_OFFSET + fault_address);
 
-  PDEBUG("%p:0x%lx => ", addr, *addr);
+  PDEBUG(("%p:0x%lx => ", addr, *addr));
   
   flip_bit = 1 << fault_content;
 
@@ -364,7 +380,7 @@ int direct_fault(int fault_address, int fault_content, pswifi_result_t res)
   if (injectFault) {
     *addr = (*addr) ^ flip_bit; 
   }
-  PDEBUG("%lx\n", *addr);
+  PDEBUG(("%lx\n", *addr));
   return(0);
 }
 
@@ -375,7 +391,7 @@ int direct_fault1(int fault_address, int fault_content, pswifi_result_t res)
 
   addr = (unsigned long *) (PAGE_OFFSET + fault_address);
   
-  PDEBUG("%p:%lx => ", addr, *addr);
+  PDEBUG(("%p:%lx => ", addr, *addr));
   
   
   data = *addr;
@@ -398,7 +414,7 @@ int direct_fault1(int fault_address, int fault_content, pswifi_result_t res)
     *addr = data;
   }
 
-  PDEBUG("%lx\n", *addr);
+  PDEBUG(("%lx\n", *addr));
   
     
   return(0);
@@ -407,7 +423,9 @@ int direct_fault1(int fault_address, int fault_content, pswifi_result_t res)
 
 
 
+/*
 #include <linux/sched.h>
+*/
 
 #define MAX_NUM_TASKS 20
 
@@ -421,14 +439,18 @@ find_task(void)
 
   
   do {
+#if 0
     read_lock(&tasklist_lock);
+#endif
     for_each_task(task) { 
       if (--i == 0) {
 	result = task;
 	break;
       }
     }
+#if 0
     read_unlock(&tasklist_lock);
+#endif
   } while ((i > 0) && (i != j));
 
   return(result);
@@ -450,15 +472,15 @@ stack_fault(pswifi_result_t res)
 
     size = (unsigned long) task + TASK_SIZE - task->thread.esp; 
 
-    PDEBUG("stack range=%lx-%lx\n", 
+    PDEBUG(("stack range=%lx-%lx\n", 
 	   (unsigned long) task->thread.esp, 
-	   (unsigned long) task + TASK_SIZE);
+	   (unsigned long) task + TASK_SIZE));
 
     addr = (unsigned long *) ((long) task->thread.esp + 
 			      (random()&~0x3)%size);  
     taddr=(unsigned long) addr;
     flip_bit = random() & 0x1f;
-    PDEBUG("%lx:%lx flip bit %d => ", taddr, *addr, flip_bit);
+    PDEBUG(("%lx:%lx flip bit %d => ", taddr, *addr, flip_bit));
     flip_bit = 1 << flip_bit;
     res[count].address = taddr;
     res[count].old = *addr;
@@ -466,17 +488,18 @@ stack_fault(pswifi_result_t res)
     if (injectFault) {
       *addr = ((*addr)^flip_bit); 
     }
-    PDEBUG("%lx\n", *addr);
+    PDEBUG(("%lx\n", *addr));
     count++;
   }
   return(0);
 }
 
 
-//
+
+/*
 // Instead of dealing with heaps directly, we look at the area cache of pages 
 // and vm pages and find an address there.
-//
+*/
 
 
 int heap_fault(pswifi_result_t res)
@@ -538,8 +561,8 @@ do_fault_copy_from_user (void *kaddr, const void *udaddr, unsigned long len,
 	  i = random() & 0xc00; 
 	}
       }
-      PDEBUG("copyin: %p to %p, len=%ld overrun=%d, Intvl=%ld, inj=%ld\n", 
-	     udaddr, kaddr, len, i, crashInterval, faultInjected);
+      PDEBUG(("copyin: %p to %p, len=%ld overrun=%d, Intvl=%ld, inj=%ld\n", 
+	     udaddr, kaddr, len, i, crashInterval, faultInjected));
       if (faultInjected++ <numFaults) {
 	len += i;
       } else {
@@ -581,8 +604,8 @@ do_fault_copy_to_user(void *udaddr, const void *kaddr, unsigned long len,
 	  i = random() & 0xc00; 
 	}
       }
-      PDEBUG("copyout: %p to %p, len=%ld overrun=%d, Intvl=%ld, inj=%ld\n",
-	     kaddr, udaddr, len, i, crashInterval, faultInjected);
+      PDEBUG(("copyout: %p to %p, len=%ld overrun=%d, Intvl=%ld, inj=%ld\n",
+	     kaddr, udaddr, len, i, crashInterval, faultInjected));
       if (faultInjected++ <numFaults) {
 	len+=i;
       } else  {
@@ -642,8 +665,8 @@ swifi_memcpy_fn (void *to, void *from, size_t len)
 	}
       }
     
-      PDEBUG("memcpy: %p to %p, len=%d overrun=%d, Intvl=%ld, inj=%ld\n", 
-	     from, to, len, i, crashInterval, faultInjected);
+      PDEBUG(("memcpy: %p to %p, len=%d overrun=%d, Intvl=%ld, inj=%ld\n", 
+	     from, to, len, i, crashInterval, faultInjected));
       if(faultInjected++ <numFaults) len+=i;
       else faultInjected=0;
       i=1;
@@ -680,8 +703,8 @@ swifi_memmove_fn (void *to, void *from, size_t len)
 	}
       }
     
-      PDEBUG("memmove: %p to %p, len=%d overrun=%d, Intvl=%ld, inj=%ld\n", 
-	     from, to, len, i, crashInterval, faultInjected);
+      PDEBUG(("memmove: %p to %p, len=%d overrun=%d, Intvl=%ld, inj=%ld\n", 
+	     from, to, len, i, crashInterval, faultInjected));
       if(faultInjected++ <numFaults) len+=i;
       else faultInjected=0;
       i=1;
@@ -723,8 +746,8 @@ do_fault_kfree(void *addr, void (* kfree_fn)(const void *))
       /* alternate between premature freeing and non-free */
       if(crashToggle) {
 	if(crashAddr) { 
-	  PDEBUG("malloc : freeing %p prematurely\n", 
-		 crashAddr);
+	  PDEBUG(("malloc : freeing %p prematurely\n", 
+		 crashAddr));
 	  kfree_fn(crashAddr);
 	  kfree_fn(addr);
 	  crashAddr=0;
@@ -736,7 +759,7 @@ do_fault_kfree(void *addr, void (* kfree_fn)(const void *))
 	  }
 	} 
       } else {
-	PDEBUG("free: don't free %p\n", addr); 
+	PDEBUG(("free: don't free %p\n", addr));
 	if(faultInjected++ > numFaults) {
 	  faultInjected=0;
 	}
@@ -752,11 +775,13 @@ do_fault_kfree(void *addr, void (* kfree_fn)(const void *))
   }
 }
 
+#if 0
 void
 swifi_kfree(const void *addr)
 {
   do_fault_kfree((void *) addr, kfree);
 }
+#endif
 
 
 void do_vfree(const void * addr)
@@ -782,7 +807,7 @@ do_fault_kmalloc(size_t size,
   if (faultInjected && (faultType==ALLOC_FAULT)) {
     crashCount++;
     if(crashCount>=crashInterval) {   
-      PDEBUG("kmalloc : returning null\n");
+      PDEBUG(("kmalloc : returning null\n"));
       crashCount=0;
       crashInterval = CRASH_INTERVAL + (random()&FI_MASK);
       if (faultInjected++ > numFaults) {
@@ -797,11 +822,13 @@ do_fault_kmalloc(size_t size,
 }
 
 
+#if 0
 void *
 swifi_kmalloc(size_t size, int flags)
 {
   return(do_fault_kmalloc(size, flags, kmalloc));
 }
+#endif
 
 
 
@@ -815,7 +842,7 @@ void * do_fault_vmalloc(unsigned long size,
   if (faultInjected && (faultType==ALLOC_FAULT)) {
     crashCount++;
     if(crashCount>=crashInterval) {   
-      PDEBUG("vmalloc : returning null\n");
+      PDEBUG(("vmalloc : returning null\n"));
       crashCount=0;
       crashInterval = CRASH_INTERVAL + (random()&FI_MASK);
       if (faultInjected++ > numFaults) {
@@ -836,6 +863,7 @@ swifi___vmalloc(unsigned long size, int gfp_mask, pgprot_t prot)
  
 
 
+#if 0
 typedef struct section_callback {
   const char * module_name;
   const char * section_name;
@@ -861,22 +889,20 @@ text_section_callback(void *token,
   }
   return(0);
 }
+#endif
 
 
-
-
-
-int text_fault(struct module * mod, pswifi_result_t res)
+int text_fault(char *mod_name, pswifi_result_t res)
 {   
   unsigned long *addr, text_size, offset, page, taddr;
   unsigned long btext, etext;
 
   int count, flip_bit=0, len, rc;
   unsigned char *c;
+#if 0
   struct module * module;
   section_callback_t info;
-
-  //
+#endif
 
 #define MAX_NUM_MODULES 10
 
@@ -885,21 +911,30 @@ int text_fault(struct module * mod, pswifi_result_t res)
   for(count=0; count<numFaults; count++) {
     int i = 1 + (random() % MAX_NUM_MODULES);
     int j = i;
+#if 0
     module = mod;
+#endif
 
+#if 0
     info.module_name = module->name;
+    info.module_name = "<module-name>";
     info.section_name = ".text";
 
     kallsyms_sections(&info, text_section_callback);
     if (info.sec_start == 0 ) {
       return(-1);
     }
+#endif
 
+    load_nlist(mod_name, &btext, &etext);
+
+#if 0
     btext = info.sec_start;
     etext = info.sec_end;
+#endif
     text_size = etext - btext;
     
-    PDEBUG("text=%lx-%lx, size=%lx\n", btext, etext, text_size);
+    PDEBUG(("text=%lx-%lx, size=%lx\n", btext, etext, text_size));
     
     addr = (unsigned long *) 
       (btext + ((unsigned long) (random()&~0xf) % text_size)); 
@@ -923,7 +958,11 @@ int text_fault(struct module * mod, pswifi_result_t res)
 	continue;
       }
     }
-    PDEBUG("target addr=%lx, instr addr=%p, %lx=>", taddr, addr, *addr); 
+
+printf("len = %d\n", len);
+
+    PDEBUG(("target addr=%lx, instr addr=%p, %lx=>", taddr, addr,
+	text_read_ul(addr))); 
       
     offset = (unsigned long) addr&PAGE_MASK;
     page = (unsigned long) addr&~PAGE_MASK;
@@ -933,19 +972,19 @@ int text_fault(struct module * mod, pswifi_result_t res)
      */
       
     res[count].address = taddr;
-    res[count].old = *addr;
-    res[count].new = *addr;
+    res[count].old = text_read_ul(addr);
+    res[count].new = text_read_ul(addr);
 
     if (faultType==TEXT_FAULT) {
 
       flip_bit = random() & 0x1f;
-      PDEBUG("flip bit %d => ", flip_bit);
+      PDEBUG(("flip bit %d => ", flip_bit));
       flip_bit = 1 << flip_bit;
 
-      res[count].new = (*addr) ^ flip_bit;
+      res[count].new = text_read_ul(addr) ^ flip_bit;
       
       if (injectFault) {
-	*addr = ((*addr)^flip_bit); 
+	text_write_ul(addr, text_read_ul(addr)^flip_bit); 
       }
 
     } else if (faultType==NOP_FAULT || 
@@ -961,7 +1000,7 @@ int text_fault(struct module * mod, pswifi_result_t res)
 	  ((unsigned char *) &res[count].new)[j] = NOP;
 	}
 	if (injectFault) {
-	  *c=NOP;
+	  text_write_ub(c, NOP);
 	}	
 
 	c++;
@@ -971,7 +1010,7 @@ int text_fault(struct module * mod, pswifi_result_t res)
       int prefix;
       c=(unsigned char *) addr;
       do {
-	switch (*c) {
+	switch (text_read_ub(c)) {
 	case 0x66: case 0x67: case 0x26: case 0x36:
 	case 0x2e: case 0x3e: case 0x64: case 0x65:
 	case 0xf0: case 0xf2: case 0xf3:
@@ -985,35 +1024,56 @@ int text_fault(struct module * mod, pswifi_result_t res)
 	  c++;
 	}
       } while (prefix);
-      if(*c>=0xd8 && *c<=0xdf) {
+      if(text_read_ub(c)>=0xd8 && text_read_ub(c)<=0xdf) {
 	/* don't mess with fp instruction, yet.
 	 * but there shouldn't be any fp instr in kernel.
 	 */
-	PDEBUG("floating point instruction, bailing out\n");
+	PDEBUG(("floating point instruction, bailing out\n"));
 	i--;
 	continue;
-      } else if(*c==0x0f) {
+      } else if(text_read_ub(c)==0x0f) {
 	c++;
       }
-      if(*c==0x0f) {
+      if(text_read_ub(c)==0x0f) {
 	c++;
       }
       c++;
       len = len-((long) c - (long) addr);
+      if (len == 0)
+      {
+	printf("tex_fault: len = %d\n", len);
+	count--;
+	continue;
+      }
+if (len == 0)
+{
+	int i;
+
+	printf(
+	"text_fault: bad length at address 0x%x, c = 0x%x, fault type %d\n",
+		addr, c, faultType);
+	printf("bytes:");
+	for (i= 0; i<16; i++)
+		printf(" 0x%02x", text_read_ub((char *)addr+i));
+	printf("\n");
+	abort();
+	*(int *)-4 = 0;
+}
       flip_bit = random() % (len*8);
-      PDEBUG("flip bit %d (len=%d) => ", flip_bit, len);
+      PDEBUG(("flip bit %d (len=%d) => ", flip_bit, len));
       for(j=0; j<len; j++) {
 	/* go to the right byte */
 	if(flip_bit<8) {
 	  flip_bit = 1 << flip_bit;
 
 	  if (j < sizeof(unsigned long)) {
-	    ((unsigned char *) &res[count].new)[j] = (*c) ^ flip_bit;
+	    ((unsigned char *) &res[count].new)[j] =
+		(text_read_ub(c) ^ flip_bit);
 	  }
 
 
 	  if (injectFault) {
-	    *c=(*c^flip_bit);
+	    text_write_ub(c, (text_read_ub(c)^flip_bit));
 	  }
 
 	  j=len;
@@ -1029,7 +1089,7 @@ int text_fault(struct module * mod, pswifi_result_t res)
       int prefix;
       c=(unsigned char *) addr;
       do {
-	switch (*c) {
+	switch (text_read_ub(c)) {
 	case 0x66: case 0x67: case 0x26: case 0x36:
 	case 0x2e: case 0x3e: case 0x64: case 0x65:
 	case 0xf0: case 0xf2: case 0xf3:
@@ -1043,21 +1103,21 @@ int text_fault(struct module * mod, pswifi_result_t res)
 	  c++;
 	}
       } while (prefix);
-      if(*c>=0xd8 && *c<=0xdf) {
+      if(text_read_ub(c)>=0xd8 && text_read_ub(c)<=0xdf) {
 	/* don't mess with fp instruction, yet */
-	PDEBUG("floating point instruction, bailing out\n");
+	PDEBUG(("floating point instruction, bailing out\n"));
 	i--;
 	continue;
-      } else if(*c==0x0f) {
+      } else if(text_read_ub(c)==0x0f) {
 	c++;
       }
-      if(*c==0x0f) {
+      if(text_read_ub(c)==0x0f) {
 	c++;
       }
       c++;
       len = len-((long) c - (long) addr);
       flip_bit = random() % (len*8-4);
-      PDEBUG("flip bit %d (len=%d) => ", flip_bit, len);
+      PDEBUG(("flip bit %d (len=%d) => ", flip_bit, len));
 
       /* mod/rm byte is special */
 
@@ -1066,11 +1126,11 @@ int text_fault(struct module * mod, pswifi_result_t res)
 
 	rc = c - (unsigned char *) addr;
 	if (rc < sizeof(unsigned long)) {
-	  ((unsigned char *) &res[count].new)[rc] = (*c) ^ flip_bit;
+	  ((unsigned char *) &res[count].new)[rc] = text_read_ub(c) ^ flip_bit;
 	  
 	}
 	if (injectFault) {
-	  *c=(*c^flip_bit);
+	  text_write_ub(c, text_read_ub(c)^flip_bit);
 	}
 
       }
@@ -1084,11 +1144,12 @@ int text_fault(struct module * mod, pswifi_result_t res)
 
 	  rc = (c - (unsigned char *) addr);
 	  if (rc < sizeof(unsigned long)) {
-	    ((unsigned char *) &res[count].new)[rc] = (*c) ^ flip_bit;
+	    ((unsigned char *) &res[count].new)[rc] =
+		text_read_ub(c) ^ flip_bit;
 	    
 	  }
 	  if (injectFault) {
-	    *c=(*c^flip_bit);
+	    text_write_ub(c, text_read_ub(c)^flip_bit);
 	  }
 
 	  j=len;
@@ -1099,7 +1160,7 @@ int text_fault(struct module * mod, pswifi_result_t res)
     } else if(faultType==LOOP_FAULT) {
       c=(unsigned char *) addr;
       /* replace rep with repe, and vice versa */
-	if(*c==0xf3) {
+	if(text_read_ub(c)==0xf3) {
 	  if (j < sizeof(unsigned long)) {
 	    ((unsigned char *) &res[count].new)[j] = NOP;
 	  }
@@ -1110,81 +1171,82 @@ int text_fault(struct module * mod, pswifi_result_t res)
 	    
 	  }
 	  if (injectFault) {
-	    *c=0xf2;
+	    text_write_ub(c, 0xf2);
 	  }
-	} else if(*c==0xf2) {
+	} else if(text_read_ub(c)==0xf2) {
 	  rc = (c - (unsigned char *) addr);
 	  if (rc < sizeof(unsigned long)) {
 	    ((unsigned char *) &res[count].new)[rc] = 0xf3;
 	    
 	  }
 	  if (injectFault) {
-	    *c=0xf3;
+	    text_write_ub(c, 0xf3);
 	  }
-	} else if( ((*c)&0xf0)==0x70 ) {
+	} else if( (text_read_ub(c)&0xf0)==0x70 ) {
 	  /* if we've jxx imm8 instruction, 
 	   * incl even byte instruction, eg jo (70) to jno (71)
 	   * decl odd byte instruction,  eg jnle (7f) to jle (7e)
 	   */ 
-	  if(*c%2 == 0) { 
+	  if(text_read_ub(c)%2 == 0) { 
 	    rc = (c - (unsigned char *) addr);
 	    if (rc < sizeof(unsigned long)) {
-	      ((unsigned char *) &res[count].new)[rc] = (*c) + 1;
+	      ((unsigned char *) &res[count].new)[rc] = text_read_ub(c) + 1;
 	    
 	    }
 
 	    if (injectFault) {
-	      *c = *c+1;
+	      text_write_ub(c, text_read_ub(c)+1);
 	    }
 	  }  else {
 
 	    rc = (c - (unsigned char *) addr);
 	    if (rc < sizeof(unsigned long)) {
-	      ((unsigned char *) &res[count].new)[rc] = (*c) - 1;
+	      ((unsigned char *) &res[count].new)[rc] = text_read_ub(c) - 1;
 	      
 	    }
 
 	    if (injectFault) {
-	      *c = *c-1;
+	      text_write_ub(c, text_read_ub(c)-1);
 	    }
 	  }
-	} else if(*c==0x66 || *c==0x67)	{ 	/* override prefix */
+	} else if(text_read_ub(c)==0x66 || text_read_ub(c)==0x67)	{ 
+		/* override prefix */
 	  c++;
-	} else if(*(c++)==0xf && ((*c)&0xf0)==0x80 ) {
+	} else if(text_read_ub(c++)==0xf && (text_read_ub(c)&0xf0)==0x80 ) {
 	  /* if we've jxx imm16/32 instruction, 
 	   * incl even byte instruction, eg jo (80) to jno (81)
 	   * decl odd byte instruction,  eg jnle (8f) to jle (8e)
 	   */ 
-	  if(*c%2 == 0) {
+	  if(text_read_ub(c)%2 == 0) {
 	    rc = (c - (unsigned char *) addr);
 	    if (rc < sizeof(unsigned long)) {
-	      ((unsigned char *) &res[count].new)[rc] = (*c) + 1;
+	      ((unsigned char *) &res[count].new)[rc] = text_read_ub(c) + 1;
 	      
 	    }
 	    if (injectFault) {
-	      *c = *c+1;
+	      text_write_ub(c, text_read_ub(c)+1);
 	    }
 	  } else {
 	    rc = (c - (unsigned char *) addr);
 	    if (rc < sizeof(unsigned long)) {
-	      ((unsigned char *) &res[count].new)[rc] = (*c) -1;
+	      ((unsigned char *) &res[count].new)[rc] = text_read_ub(c) -1;
 	      
 	    }
 
 	    if (injectFault) {
-	      *c = *c-1;
+	      text_write_ub(c, text_read_ub(c)-1);
 	    }
 	  }
 	}
       
     }
-    PDEBUG("%lx\n", *addr);
+    PDEBUG(("%lx\n", text_read_ul(addr)));
   }
   return(0);
 }
 
 
-#else // CONFIG_SWIFI
+#else /* CONFIG_SWIFI */
 
 long
 sys_inject_fault(char * module_name,
@@ -1197,5 +1259,4 @@ sys_inject_fault(char * module_name,
   return(0);
 }
 
-#endif // CONFIG_SWIFI
-
+#endif /* CONFIG_SWIFI */
diff --git a/commands/swifi/read_nlist.c b/commands/swifi/read_nlist.c
new file mode 100644
index 000000000..1c50df36f
--- /dev/null
+++ b/commands/swifi/read_nlist.c
@@ -0,0 +1,329 @@
+/*
+read_nlist.c
+
+Read the symbol table of an executable into memory. 
+
+Created:	Mar 6, 1992 by Philip Homburg
+*/
+
+#include <sys/types.h>
+#include <assert.h>
+#include <a.out.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "extra.h"
+
+#define USE_OLD_NLIST	1
+
+static u16_t le16 _ARGS(( u16_t *word_p ));
+static u32_t le32 _ARGS(( u32_t *word_p ));
+static u16_t be16 _ARGS(( u16_t *word_p ));
+static u32_t be32 _ARGS(( u32_t *word_p ));
+
+static u16_t le16(word_p)
+u16_t *word_p;
+{
+	return (((u8_t *)word_p)[0] << 0) | (((u8_t *)word_p)[1] << 8);
+}
+
+static u16_t be16(word_p)
+u16_t *word_p;
+{
+	return (((u8_t *)word_p)[1] << 0) | (((u8_t *)word_p)[0] << 8);
+}
+
+static u32_t le32(dword_p)
+u32_t *dword_p;
+{
+	return le16(&((u16_t *)dword_p)[0]) |
+		((u32_t)le16(&((u16_t *)dword_p)[1]) << 16);
+}
+
+static u32_t be32(dword_p)
+u32_t *dword_p;
+{
+	return be16(&((u16_t *)dword_p)[1]) |
+		((u32_t)be16(&((u16_t *)dword_p)[0]) << 16);
+}
+
+#ifndef USE_OLD_NLIST
+struct old_nlist
+{
+	char n_name[8];
+	long n_value;
+	unsigned char n_sclass;
+	unsigned char n_numaux;
+	unsigned char n_type;
+};
+
+/* Low bits of storage class (section). */
+#define O_N_SECT            07    /* section mask */
+#define O_N_UNDF            00    /* undefined */
+#define O_N_ABS             01    /* absolute */
+#define O_N_TEXT            02    /* text */
+#define O_N_DATA            03    /* data */
+#define O_N_BSS             04    /* bss */
+#define O_N_COMM            05    /* (common) */
+
+/* High bits of storage class. */
+#define O_N_CLASS         0370    /* storage class mask */
+#define O_C_NULL
+#define O_C_EXT           0020    /* external symbol */
+#define O_C_STAT          0030    /* static */
+#endif
+
+int read_nlist(filename, nlist_table)
+const char *filename;	
+struct nlist **nlist_table;
+{
+	int r, n_entries, save_err;
+	u32_t (*cnv32) _ARGS(( u32_t *addr ));
+	u16_t (*cnv16) _ARGS(( u16_t *addr ));
+	struct nlist *nlist_p, *nlist_ptr;
+	int exec_fd;
+	struct exec exec_header;
+#ifndef USE_OLD_NLIST
+	struct old_nlist *old_nlist, *old_nlist_p;
+	void *old_nlist_end;
+#endif
+	char *str_tab, *str_base, *str_null;
+	u32_t string_siz;
+
+	exec_fd= open(filename, O_RDONLY);
+	if (exec_fd == -1)			/* No executable present */
+	{
+		return -1;
+	}
+
+	r= read(exec_fd, (char *)&exec_header, A_MINHDR);
+	if (r != A_MINHDR)
+	{
+		if (r != -1)
+			errno= ENOEXEC;
+		return -1;
+	}
+	if (BADMAG(exec_header))
+	{
+		errno= ENOEXEC;
+		return -1;
+	}
+	switch(exec_header.a_cpu & 3)
+	{
+	case 0:	/* little endian */
+		cnv32= le32;
+		cnv16= le16;
+		break;
+	case 3:	/* big endian */
+		cnv32= be32;
+		cnv16= be16;
+		break;
+	default:
+		errno= ENOEXEC;
+		return -1;
+	}
+	exec_header.a_version= cnv16((u16_t *)&exec_header.a_version);
+	exec_header.a_text= cnv32((u32_t *)&exec_header.a_text);
+	exec_header.a_data= cnv32((u32_t *)&exec_header.a_data);
+	exec_header.a_bss= cnv32((u32_t *)&exec_header.a_bss);
+	exec_header.a_entry= cnv32((u32_t *)&exec_header.a_entry);
+	exec_header.a_total= cnv32((u32_t *)&exec_header.a_total);
+	exec_header.a_syms= cnv32((u32_t *)&exec_header.a_syms);
+	exec_header.a_trsize= cnv32((u32_t *)&exec_header.a_trsize);
+	exec_header.a_drsize= cnv32((u32_t *)&exec_header.a_drsize);
+	exec_header.a_tbase= cnv32((u32_t *)&exec_header.a_tbase);
+	exec_header.a_dbase= cnv32((u32_t *)&exec_header.a_dbase);
+
+	if (!exec_header.a_syms)
+		return 0;
+		
+	if (exec_header.a_flags & A_NSYM)
+	{
+#if USE_OLD_NLIST
+		errno= EINVAL;
+		return -1;
+#else
+		r= lseek(exec_fd, A_SYMPOS(exec_header)+exec_header.a_syms,
+			SEEK_SET);
+		if (r == -1)
+		{
+			return -1;
+		}
+		r= read(exec_fd, (char *)&string_siz, 4);
+		if (r != 4)
+			return -1;
+		string_siz= cnv32(&string_siz)-4;
+		nlist_p= malloc(exec_header.a_syms + string_siz+1);
+		if (!nlist_p)
+		{
+			errno= ENOMEM;
+			return -1;
+		}
+		r= lseek(exec_fd, A_SYMPOS(exec_header)+exec_header.a_syms+4,
+			SEEK_SET);
+		if (r == -1)
+		{
+			save_err= errno;
+			free(nlist_p);
+			errno= save_err;
+			return -1;
+		}
+		r= read(exec_fd, ((char *)nlist_p)+exec_header.a_syms,
+			string_siz);
+		if (r != string_siz)
+		{
+			save_err= errno;
+			free(nlist_p);
+			errno= save_err;
+			return -1;
+		}
+		r= lseek(exec_fd, A_SYMPOS(exec_header), SEEK_SET);
+		if (r == -1)
+		{
+			save_err= errno;
+			free(nlist_p);
+			errno= save_err;
+			return -1;
+		}
+		r= read(exec_fd, ((char *)nlist_p), exec_header.a_syms);
+		if (r != exec_header.a_syms)
+		{
+			save_err= errno;
+			free(nlist_p);
+			errno= save_err;
+			return -1;
+		}
+		str_base= ((char *)nlist_p) + exec_header.a_syms -4;
+		str_null= (char *)nlist_p + exec_header.a_syms + string_siz;
+		*str_null= '\0';
+		for (nlist_ptr= nlist_p; (char *)nlist_ptr+1 <= str_base+4;
+								nlist_ptr++)
+		{
+			nlist_ptr->n_desc= le16((u16_t *)&nlist_ptr->n_desc);
+			nlist_ptr->n_value= le32(&nlist_ptr->n_value);
+			if (nlist_ptr->n_un.n_strx)
+				nlist_ptr->n_un.n_name= str_base+
+					cnv32((u32_t *)&nlist_ptr->n_un.n_strx);
+			else
+				nlist_ptr->n_un.n_name= str_null;
+		}
+		*nlist_table= nlist_p;
+		return nlist_ptr-nlist_p;
+#endif
+	}
+	else
+	{
+		r= lseek(exec_fd, A_SYMPOS(exec_header), SEEK_SET);
+		if (r == -1)
+		{
+			return -1;
+		}
+		
+#if USE_OLD_NLIST
+		n_entries= exec_header.a_syms/sizeof(struct nlist);
+		nlist_p= malloc(exec_header.a_syms);
+		if (!nlist_p)
+		{
+			free(nlist_p);
+			errno= ENOMEM;
+			return -1;
+		}
+		r= read(exec_fd, (char *)nlist_p, exec_header.a_syms);
+		if (r != exec_header.a_syms)
+		{
+			save_err= errno;
+			free(nlist_p);
+			errno= save_err;
+			return -1;
+		}
+
+		*nlist_table= nlist_p;
+		return n_entries;
+#else
+		n_entries= exec_header.a_syms/sizeof(struct old_nlist)+1;
+		nlist_p= NULL;
+		old_nlist= NULL;
+
+		nlist_p= malloc(n_entries * (sizeof(struct nlist)+
+			sizeof(old_nlist->n_name)+1));
+		old_nlist= malloc(exec_header.a_syms);
+		if (!old_nlist || !nlist_p)
+		{
+			if (nlist_p)
+				free(nlist_p);
+			if (old_nlist)
+				free(old_nlist);
+			errno= ENOMEM;
+			return -1;
+		}
+		r= read(exec_fd, (char *)old_nlist, exec_header.a_syms);
+		if (r != exec_header.a_syms)
+		{
+			save_err= errno;
+			free(nlist_p);
+			free(old_nlist);
+			errno= save_err;
+			return -1;
+		}
+
+		old_nlist_end= (char *)old_nlist+exec_header.a_syms;
+		str_tab= (char *)&nlist_p[n_entries];
+		n_entries= 0;
+		for (old_nlist_p= old_nlist; 
+			(void *)(old_nlist_p+1)<=old_nlist_end; old_nlist_p++)
+		{
+			switch(old_nlist_p->n_sclass & O_N_SECT)
+			{
+			case O_N_UNDF:
+				nlist_p[n_entries].n_type= N_UNDF;
+				break;
+			case O_N_ABS:
+				nlist_p[n_entries].n_type= N_ABS;
+				break;
+			case O_N_TEXT:
+				nlist_p[n_entries].n_type= N_TEXT;
+				break;
+			case O_N_DATA:
+				nlist_p[n_entries].n_type= N_DATA;
+				break;
+			case O_N_BSS:
+				nlist_p[n_entries].n_type= N_BSS;
+				break;
+			case O_N_COMM:
+				nlist_p[n_entries].n_type= N_COMM;
+				break;
+			default:
+				continue;
+			}
+			switch(old_nlist_p->n_sclass & O_N_CLASS)
+			{
+			case O_C_EXT:
+				nlist_p[n_entries].n_type |= N_EXT;
+			case O_C_STAT:
+				break;
+			default:
+				continue;
+			}
+			nlist_p[n_entries].n_value= 
+				cnv32((u32_t *)&old_nlist_p->n_value);
+			nlist_p[n_entries].n_un.n_name= str_tab;
+			memcpy(str_tab, old_nlist_p->n_name, 
+				sizeof(old_nlist_p->n_name));
+			str_tab += sizeof(old_nlist_p->n_name);
+			*str_tab++= '\0';
+			n_entries++;
+		}
+		free(old_nlist);
+		nlist_p= realloc(nlist_p, str_tab-(char *)nlist_p);
+		*nlist_table= nlist_p;
+		return n_entries;
+#endif
+	}
+}
+
+/*
+ * $PchId: read_nlist.c,v 1.5 1996/04/11 07:47:38 philip Exp $
+ */
diff --git a/commands/swifi/rnd.c b/commands/swifi/rnd.c
new file mode 100644
index 000000000..4412e2ff2
--- /dev/null
+++ b/commands/swifi/rnd.c
@@ -0,0 +1,99 @@
+/*
+rnd.c
+
+Generate random numbers
+*/
+
+#define _POSIX_SOURCE
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static char *progname;
+
+static void fatal(char *fmt, ...);
+static void usage(void);
+
+int main(int argc, char *argv[])
+{
+	int c, i, count;
+	unsigned long n, v, high, modulus;
+	unsigned seed;
+	char *check;
+	char *c_arg, *m_arg, *s_arg;
+
+	(progname=strrchr(argv[0],'/')) ? progname++ : (progname=argv[0]);
+
+	c_arg= m_arg= s_arg= NULL;
+	while (c= getopt(argc, argv, "?c:m:s:"), c != -1)
+	{
+		switch(c)
+		{
+		case 'c': c_arg= optarg; break;
+		case 'm': m_arg= optarg; break;
+		case 's': s_arg= optarg; break;
+		default:
+			fatal("getopt failed: '%c'", c);
+		}
+	}
+	if (optind != argc)
+		usage();
+	if (c_arg)
+	{
+		count= strtol(c_arg, &check, 0);
+		if (check[0] != '\0')
+			fatal("bad count '%s'", c_arg);
+	}
+	else
+		count= 1;
+	if (m_arg)
+	{
+		modulus= strtoul(m_arg, &check, 0);
+		if (check[0] != '\0' || modulus == 0)
+			fatal("bad modulus '%s'", m_arg);
+		n= 0x80000000UL / modulus;
+		if (n == 0)
+			fatal("bad modulus %lu (too big)", modulus);
+		high= n * modulus;
+	}
+	else
+		modulus= high= 0x80000000UL;
+	if (s_arg)
+	{
+		seed= strtol(s_arg, &check, 0);
+		if (check[0] != '\0')
+			fatal("bad seed '%s'", s_arg);
+		srandom(seed);
+	}
+
+	for (i= 0; i<count; i++)
+	{
+		do
+		{
+			v= random();
+		} while (v > high);
+
+		printf("%lu\n", v % modulus);
+	}
+}
+
+static void fatal(char *fmt, ...)
+{
+	va_list ap;
+
+	fprintf(stderr, "%s: ", progname);
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	fprintf(stderr, "\n");
+	exit(1);
+}
+
+static void usage(void)
+{
+	fprintf(stderr, "Usage: rnd [-c <count>] [-m <modulus>] [-s <seed>]\n");
+	exit(1);
+}
diff --git a/commands/swifi/rs.restart_imm b/commands/swifi/rs.restart_imm
new file mode 100755
index 000000000..815a842f8
--- /dev/null
+++ b/commands/swifi/rs.restart_imm
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+# 'Recovery' script immediately restarts.
+echo "Arguments: $@" >/dev/console
+service restart "$1"
diff --git a/commands/swifi/run_swifi b/commands/swifi/run_swifi
new file mode 100644
index 000000000..85534196b
--- /dev/null
+++ b/commands/swifi/run_swifi
@@ -0,0 +1,58 @@
+#!/bin/sh
+
+LABEL=dp8390
+EXEDIR=/usr/build/drivers/dp8390
+EXE=$EXEDIR/$LABEL
+
+:>log
+
+do_one()
+{
+	# $1 = test-nr, $2 = count, $3 = seed
+	pid=''
+	while [ X"$pid" = X ]
+	do
+		pid=`ps ax | grep $LABEL | grep -v grep |
+			sed 's,^[ 	]*,,;s,[ 	].*,,`
+		if [ X"$pid" != X ]
+		then
+			break
+		fi
+		sleep 10
+	done
+	echo pid = $pid
+	./swifi -f $EXE $pid $1 $2 $3 >/tmp/out
+	sleep 1
+	kill -0 $pid &&
+		echo "driver failed to die, params: test $1, count $2, seed $3"
+}
+
+one_round()
+{
+	# $1 = count, $2 = seed
+	count=$1
+	seed=$2
+	echo "Seed: $seed" >> log
+	sync
+	do_one 6 $count $seed	# Source fault
+	do_one 5 $count $seed	# Destination fault
+	do_one 8 $count $seed	# Pointer fault
+	do_one 14 $count $seed	# Interface fault
+	do_one 12 $count $seed	# Loop fault
+	do_one 0 $count $seed	# Text fault
+	do_one 4 $count $seed	# Nop fault
+}
+
+# Start our own driver.
+service down $LABEL
+sleep 10	# Allow driver to die
+service up $EXE -script `pwd`/rs.restart_imm -config /etc/drivers.conf -period 3HZ
+
+i=0
+i=4000
+while [ $i -lt 10000 ]
+do
+	echo "Seed: $i"
+	one_round 100 $i
+	i=`expr $i + 1`
+done
diff --git a/commands/swifi/run_swifi-x b/commands/swifi/run_swifi-x
new file mode 100644
index 000000000..14b093444
--- /dev/null
+++ b/commands/swifi/run_swifi-x
@@ -0,0 +1,39 @@
+#!/bin/sh
+do_one()
+{
+	# $1 = test-nr, $2 = count, $3 = seed
+	pid=''
+	while [ X"$pid" = X ]
+	do
+		pid=`ps ax | grep dp8390 | grep usr.sbin |
+			sed 's,^[ 	]*,,;s,[ 	].*,,`
+		sleep 1
+	done
+	echo pid = $pid
+	./swifi -f /usr/build/drivers/dp8390/dp8390 $pid $1 $2 $3 >/tmp/out
+	sleep 5
+	kill -0 $pid &&
+		echo "driver failed to die, params: test $1, count $2, seed $3"
+}
+
+one_round()
+{
+	# $1 = count, $2 = seed
+	count=$1
+	seed=$2
+	do_one 6 $count $seed	# Source fault
+	do_one 5 $count $seed	# Destination fault
+	do_one 8 $count $seed	# Pointer fault
+	do_one 14 $count $seed	# Interface fault
+	do_one 12 $count $seed	# Loop fault
+	do_one 0 $count $seed	# Text fault
+	do_one 4 $count $seed	# Nop fault
+}
+
+i=4
+while [ $i -lt 100 ]
+do
+	echo "Seed: $i"
+	one_round 100 $i
+	i=`expr $i + 1`
+done
diff --git a/commands/swifi/run_t1 b/commands/swifi/run_t1
new file mode 100755
index 000000000..1bb2d524f
--- /dev/null
+++ b/commands/swifi/run_t1
@@ -0,0 +1,122 @@
+#!/bin/sh
+
+LABEL=es1371
+EXEDIR=/usr/build/drivers/es1371
+#LABEL=fxp
+#EXEDIR=/usr/build/drivers/fxp
+EXE=$EXEDIR/$LABEL
+DEV="-dev /dev/audio"
+
+:>log
+
+do_one()
+{
+	# $1 = test-nr, $2 = count, $3 = seed
+	pid=''
+	while [ X"$pid" = X ]
+	do
+		ps ax | grep $LABEL | grep -v grep
+		pid=`ps ax | grep $LABEL | grep -v grep |
+			sort -n | tail -1 |
+			sed 's,^[ 	]*,,;s,[ 	].*,,`
+		if [ X"$pid" != X ]
+		then
+			break
+		fi
+		sleep 10
+	done
+	echo pid = $pid
+	./swifi -f $EXE $pid $1 $2 $3 >/tmp/out
+	sleep 1
+	kill -0 $pid &&
+		echo "driver failed to die, params: test $1, count $2, seed $3"
+}
+
+one_round()
+{
+	# $1 = count, $2 = seed
+	count=$1
+	seed=$2
+	echo "Seed: $seed" >> log
+	sync
+	do_one 6 $count $seed	# Source fault
+	do_one 5 $count $seed	# Destination fault
+	do_one 8 $count $seed	# Pointer fault
+	do_one 14 $count $seed	# Interface fault
+	do_one 12 $count $seed	# Loop fault
+	do_one 0 $count $seed	# Text fault
+	do_one 4 $count $seed	# Nop fault
+}
+
+usage()
+{
+	echo "Usage: run_t1 <count> <type> <seed>" >&2
+	echo \
+"Valid types are: source destination pointer interface loop text nop random" >&2
+	exit 1
+}
+
+select_from()
+{
+	# $1 = index, $2... = choices
+	index="$1"
+	index=`expr "$index" + 1`
+	shift
+	v=`eval echo '$'$index`
+	echo "$v"
+}
+
+random_type()
+{
+	# $1 = seed
+	seed="$1"
+	r=`./rnd -m 7 -s "$seed"`
+	select_from "$r" 6 5 8 14 12 0 4
+}
+
+if [ $# -ne 3 ]; then usage; fi
+count="$1"
+type="$2"
+seed="$3"
+
+case "$type" in
+source)		type_arg=6
+;;
+destination)	type_arg=5
+;;
+pointer)	type_arg=8
+;;
+interface)	type_arg=14
+;;
+loop)		type_arg=12
+;;
+text)		type_arg=0
+;;
+nop)		type_arg=4
+;;
+random)		
+;;
+*)
+	usage
+esac
+
+# Start our own driver.
+service down $LABEL
+sleep 2	# Allow driver to die
+service -i up $EXE -script `pwd`/rs.restart_imm -config /etc/drivers.conf -period 3HZ $DEV
+
+i=0
+while [ $i -lt "$count" ]
+do
+	echo "Seed: $seed"
+	if [ "$type" = "random" ]
+	then
+		type_arg=`random_type $seed`
+	fi
+	do_one "$type_arg" 100 $seed
+	i=`expr $i + 1`
+	seed=`expr $seed + 1`
+done
+
+# Restart the driver
+service refresh $LABEL
diff --git a/commands/swifi/run_t1a b/commands/swifi/run_t1a
new file mode 100755
index 000000000..efa06655e
--- /dev/null
+++ b/commands/swifi/run_t1a
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+set -x
+
+if [ $# -ne 2 ]; then usage; fi
+type="$1"
+run="$2"
+
+count=1000
+
+# Rotate syslog
+LOGFILE=/var/log/messages
+mv $LOGFILE $LOGFILE.prev
+(cd /var/log && : > messages)
+kill -1 `ps ax | grep syslogd | grep -v grep |
+	sed 's,^[	 ]*,,;s,[	 ].*,,'`
+
+./run_t1 $count $type `expr $run \* 1000` 2>&1 | 
+	tee results/1.$type.$run.out
+
+cp $LOGFILE results/1.$type.$run.log
+
+
diff --git a/commands/swifi/run_t1b b/commands/swifi/run_t1b
new file mode 100755
index 000000000..2a513c4fa
--- /dev/null
+++ b/commands/swifi/run_t1b
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+run=0
+
+./run_t1a interface $run
+
+./run_t1a source $run
+./run_t1a destination $run
+./run_t1a pointer $run
+./run_t1a interface $run
+./run_t1a loop $run
+./run_t1a text $run
+./run_t1a nop $run
+./run_t1a random $run
diff --git a/commands/swifi/run_t2 b/commands/swifi/run_t2
new file mode 100755
index 000000000..debdf5706
--- /dev/null
+++ b/commands/swifi/run_t2
@@ -0,0 +1,146 @@
+#!/bin/sh
+
+LABEL=dp8390
+EXEDIR=/usr/build/drivers/dp8390
+EXE=$EXEDIR/$LABEL
+DAYTIME_HOST=jetsam.cs.vu.nl
+FAULTS_PER_BLOCK=1
+
+:>log
+
+fault_blocks=0
+connect_blocks=0
+dont_connect=0
+
+do_one()
+{
+	# $1 = test-nr, $2 = count, $3 = seed
+	pid=''
+	while [ X"$pid" = X ]
+	do
+		pid=`ps ax | grep $LABEL | grep -v grep |
+			sed 's,^[ 	]*,,;s,[ 	].*,,`
+		if [ X"$pid" != X ]
+		then
+			break
+		fi
+		sleep 10
+	done
+	echo pid = $pid
+	./swifi -f $EXE $pid $1 $2 $3 >/tmp/out
+	sleep 1
+	fault_blocks=`expr $fault_blocks + 1`
+	if kill -0 $pid 
+	then
+		if [ $dont_connect -eq 0 ]
+		then
+			if ./socket -t 10 $DAYTIME_HOST daytime < /dev/null
+			then
+				connect_blocks=`expr $connect_blocks + 1`
+			else
+				dont_connect=1
+			fi
+		fi
+		echo "driver failed to die, params: test $1, count $2, seed $3"
+	else
+		connect_blocks=`expr $connect_blocks + 1`
+		echo "driver crashed after $fault_blocks blocks"
+		echo "driver failed to connect after $connect_blocks blocks"
+		fault_blocks=0
+		connect_blocks=0
+		dont_connect=0
+	fi
+}
+
+one_round()
+{
+	# $1 = count, $2 = seed
+	count=$1
+	seed=$2
+	echo "Seed: $seed" >> log
+	sync
+	do_one 6 $count $seed	# Source fault
+	do_one 5 $count $seed	# Destination fault
+	do_one 8 $count $seed	# Pointer fault
+	do_one 14 $count $seed	# Interface fault
+	do_one 12 $count $seed	# Loop fault
+	do_one 0 $count $seed	# Text fault
+	do_one 4 $count $seed	# Nop fault
+}
+
+usage()
+{
+	echo "Usage: run_t2 <count> <type> <seed>" >&2
+	echo \
+"Valid types are: source destination pointer interface loop text nop random" >&2
+	exit 1
+}
+
+select_from()
+{
+	# $1 = index, $2... = choices
+	index="$1"
+	index=`expr "$index" + 1`
+	shift
+	v=`eval echo '$'$index`
+	echo "$v"
+}
+
+random_type()
+{
+	# $1 = seed
+	seed="$1"
+	r=`./rnd -m 7 -s "$seed"`
+	select_from "$r" 6 5 8 14 12 0 4
+}
+
+if [ $# -ne 3 ]; then usage; fi
+count="$1"
+type="$2"
+seed="$3"
+
+case "$type" in
+source)		type_arg=6
+;;
+destination)	type_arg=5
+;;
+pointer)	type_arg=8
+;;
+interface)	type_arg=14
+;;
+loop)		type_arg=12
+;;
+text)		type_arg=0
+;;
+nop)		type_arg=4
+;;
+random)		
+;;
+*)
+	usage
+esac
+
+# Start our own driver.
+service down $LABEL
+sleep 10	# Allow driver to die
+service up $EXE -script `pwd`/rs.restart_imm -config /etc/drivers.conf -period 3HZ
+
+i=0
+while [ $i -lt "$count" ]
+do
+	echo "Seed: $seed"
+	if [ "$type" = "random" ]
+	then
+		type_arg=`random_type $seed`
+	fi
+	do_one "$type_arg" $FAULTS_PER_BLOCK $seed
+	i=`expr $i + 1`
+	seed=`expr $seed + 1`
+done
+
+connect_blocks=`expr $connect_blocks + 1`
+echo "driver crashed after $fault_blocks blocks"
+echo "driver failed to connect after $connect_blocks blocks"
+
+# Restart the driver
+service refresh $LABEL
diff --git a/commands/swifi/run_t2a b/commands/swifi/run_t2a
new file mode 100755
index 000000000..8af4b0691
--- /dev/null
+++ b/commands/swifi/run_t2a
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+set -x
+
+if [ $# -ne 2 ]; then usage; fi
+type="$1"
+run="$2"
+
+count=10000
+
+# Rotate syslog
+LOGFILE=/var/log/messages
+mv $LOGFILE $LOGFILE.prev
+(cd /var/log && : > messages)
+kill -1 `ps ax | grep syslogd | grep -v grep |
+	sed 's,^[	 ]*,,;s,[	 ].*,,'`
+
+./run_t2 $count $type `expr $run \* 1000` 2>&1 | 
+	tee results/2.$type.$run.out
+
+cp $LOGFILE results/2.$type.$run.log
+
+
diff --git a/commands/swifi/run_t2b b/commands/swifi/run_t2b
new file mode 100755
index 000000000..a48828829
--- /dev/null
+++ b/commands/swifi/run_t2b
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+run=0
+
+./run_t2a interface $run
+exit
+
+./run_t2a source $run
+./run_t2a destination $run
+./run_t2a pointer $run
+#./run_t2a interface $run
+./run_t2a loop $run
+#./run_t2a text $run
+#./run_t2a nop $run
+#./run_t2a random $run
diff --git a/commands/swifi/socket.c b/commands/swifi/socket.c
new file mode 100644
index 000000000..324b7f116
--- /dev/null
+++ b/commands/swifi/socket.c
@@ -0,0 +1,306 @@
+/*
+socket.c
+
+Created:	Feb 2001 by Philip Homburg <philip@f-mnx.phicoh.com>
+
+Open a TCP connection
+*/
+
+#define _POSIX_C_SOURCE 2
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+
+#include <net/hton.h>
+#include <net/netlib.h>
+#include <net/gen/in.h>
+#include <net/gen/inet.h>
+#include <net/gen/netdb.h>
+#include <net/gen/socket.h>
+#include <net/gen/tcp.h>
+#include <net/gen/tcp_io.h>
+
+#define BUF_SIZE	10240
+
+char *progname;
+int tcpfd= -1;
+char buf[BUF_SIZE];
+static int bulk= 0;
+static int push= 0;
+static int stdout_issocket= 0;
+static int timeout;
+
+static void do_conn(char *hostname, char *portname);
+static void alrm_conn(int sig);
+static void alrm_io(int sig);
+static void fullduplex(void);
+static void fatal(char *msg, ...);
+static void usage(void);
+
+int main(int argc, char *argv[])
+{
+	int c;
+	char *hostname;
+	char *portname;
+	char *check;
+	int B_flag, P_flag, s_flag;
+	char *t_arg;
+
+	(progname=strrchr(argv[0],'/')) ? progname++ : (progname=argv[0]);
+
+	B_flag= 0;
+	P_flag= 0;
+	s_flag= 0;
+	t_arg= NULL;
+	while (c= getopt(argc, argv, "BPst:?"), c != -1)
+	{
+		switch(c)
+		{
+		case 'B':	B_flag= 1; break;
+		case 'P':	P_flag= 1; break;
+		case 's':	s_flag= 1; break;
+		case 't':	t_arg= optarg; break;
+		case '?':	usage();
+		default:
+			fatal("getopt failed: '%c'", c);
+		}
+	}
+	if (t_arg)
+	{
+		timeout= strtol(t_arg, &check, 0);
+		if (check[0] != '\0')
+			fatal("unable to parse timeout '%s'\n", t_arg);
+		if (timeout <= 0)
+			fatal("bad timeout '%d'\n", timeout);
+	}
+	else
+		timeout= 0;
+
+	if (optind+2 != argc)
+		usage();
+	hostname= argv[optind++];
+	portname= argv[optind++];
+
+	bulk= B_flag;
+	push= P_flag;
+	stdout_issocket= s_flag;
+
+	do_conn(hostname, portname);
+
+	/* XXX */
+	if (timeout)
+	{
+		signal(SIGALRM, alrm_io);
+		alarm(timeout);
+	}
+
+	fullduplex();
+	exit(0);
+}
+
+static void do_conn(char *hostname, char *portname)
+{
+	ipaddr_t addr;
+	tcpport_t port;
+	struct hostent *he;
+	struct servent *se;
+	char *tcp_device, *check;
+	nwio_tcpconf_t tcpconf;
+	nwio_tcpcl_t tcpcl;
+	nwio_tcpopt_t tcpopt;
+
+	if (!inet_aton(hostname, &addr))
+	{
+		he= gethostbyname(hostname);
+		if (he == NULL)
+			fatal("unknown hostname '%s'", hostname);
+		if (he->h_addrtype != AF_INET || he->h_length != sizeof(addr))
+			fatal("bad address for '%s'", hostname);
+		memcpy(&addr, he->h_addr, sizeof(addr));
+	}
+
+	port= strtol(portname, &check, 0);
+	if (check[0] != 0)
+	{
+		se= getservbyname(portname, "tcp");
+		if (se == NULL)
+			fatal("unkown port '%s'", portname);
+		port= ntohs(se->s_port);
+	}
+
+	tcp_device= getenv("TCP_DEVICE");
+	if (tcp_device == NULL) tcp_device= TCP_DEVICE;
+
+	tcpfd= open(tcp_device, O_RDWR);
+	if (tcpfd == -1)
+		fatal("unable to open '%s': %s", tcp_device, strerror(errno));
+	tcpconf.nwtc_flags= NWTC_EXCL | NWTC_LP_SEL | NWTC_SET_RA |
+		NWTC_SET_RP;
+	tcpconf.nwtc_remaddr= addr;
+	tcpconf.nwtc_remport= htons(port);;
+	if (ioctl(tcpfd, NWIOSTCPCONF, &tcpconf) == -1)
+		fatal("NWIOSTCPCONF failed: %s", strerror(errno));
+
+	if (timeout)
+	{
+		signal(SIGALRM, alrm_conn);
+		alarm(timeout);
+	}
+
+	tcpcl.nwtcl_flags= 0;
+	if (ioctl(tcpfd, NWIOTCPCONN, &tcpcl) == -1)
+	{
+		fatal("unable to connect to %s:%u: %s", inet_ntoa(addr),
+			ntohs(tcpconf.nwtc_remport), strerror(errno));
+	}
+
+	alarm(0);
+
+	if (bulk)
+	{
+		tcpopt.nwto_flags= NWTO_BULK;
+		if (ioctl(tcpfd, NWIOSTCPOPT, &tcpopt) == -1)
+			fatal("NWIOSTCPOPT failed: %s", strerror(errno));
+	}
+}
+
+static void alrm_conn(int sig)
+{
+	fatal("timeout during connect");
+}
+
+static void alrm_io(int sig)
+{
+	fatal("timeout during io");
+}
+
+static void fullduplex(void)
+{
+	pid_t cpid;
+	int o, r, s, s_errno, loc;
+
+	cpid= fork();
+	switch(cpid)
+	{
+	case -1:	fatal("fork failed: %s", strerror(errno));
+	case 0:
+		/* Read from TCP, write to stdout. */
+		for (;;)
+		{
+			r= read(tcpfd, buf, BUF_SIZE);
+			if (r == 0)
+				break;
+			if (r == -1)
+			{
+				r= errno;
+				if (stdout_issocket)
+					ioctl(1, NWIOTCPSHUTDOWN, NULL);
+				fatal("error reading from TCP conn.: %s",
+					strerror(errno));
+			}
+			s= r; 
+			for (o= 0; o<s; o += r)
+			{
+				r= write(1, buf+o, s-o);
+				if (r <= 0)
+				{
+					fatal("error writing to stdout: %s",
+						r == 0 ? "EOF" :
+						strerror(errno));
+				}
+			}
+		}
+		if (stdout_issocket)
+		{
+			r= ioctl(1, NWIOTCPSHUTDOWN, NULL);
+			if (r == -1)
+			{
+				fatal("NWIOTCPSHUTDOWN failed on stdout: %s",
+					strerror(errno));
+			}
+		}
+		exit(0);
+	default:
+		break;
+	}
+
+	/* Read from stdin, write to TCP. */
+	for (;;)
+	{
+		r= read(0, buf, BUF_SIZE);
+		if (r == 0)
+			break;
+		if (r == -1)
+		{
+			s_errno= errno;
+			kill(cpid, SIGTERM);
+			fatal("error reading from stdin: %s",
+				strerror(s_errno));
+		}
+		s= r; 
+		for (o= 0; o<s; o += r)
+		{
+			r= write(tcpfd, buf+o, s-o);
+			if (r <= 0)
+			{
+				s_errno= errno;
+				kill(cpid, SIGTERM);
+				fatal("error writing to TCP conn.: %s",
+					r == 0 ? "EOF" :
+					strerror(s_errno));
+			}
+		}
+		if (push)
+			ioctl(tcpfd, NWIOTCPPUSH, NULL);
+	}
+	if (ioctl(tcpfd, NWIOTCPSHUTDOWN, NULL) == -1)
+	{
+		s_errno= errno;
+		kill(cpid, SIGTERM);
+		fatal("unable to shut down TCP conn.: %s", strerror(s_errno));
+	}
+
+	r= waitpid(cpid, &loc, 0);
+	if (r == -1)
+	{
+		s_errno= errno;
+		kill(cpid, SIGTERM);
+		fatal("waitpid failed: %s", strerror(s_errno));
+	}
+	if (WIFEXITED(loc))
+		exit(WEXITSTATUS(loc));
+	kill(getpid(), WTERMSIG(loc));
+	exit(1);
+}
+
+static void fatal(char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	fprintf(stderr, "%s: ", progname);
+	vfprintf(stderr, fmt, ap);
+	fprintf(stderr, "\n");
+	va_end(ap);
+	exit(1);
+}
+
+static void usage(void)
+{
+	fprintf(stderr, "Usage: %s [-BPs] [-t timeout] hostname portname\n",
+		progname);
+	exit(1);
+}
+
+/*
+ * $PchId: socket.c,v 1.3 2005/01/31 22:33:20 philip Exp $
+ */
diff --git a/commands/swifi/systest.c b/commands/swifi/systest.c
new file mode 100644
index 000000000..66277c748
--- /dev/null
+++ b/commands/swifi/systest.c
@@ -0,0 +1,123 @@
+/*
+ * systest.c -- Test code for nooks system calls
+ *
+ * Copyright (C) 2002 Mike Swift
+ *
+ * The source code in this file can be freely used, adapted,
+ * and redistributed in source or binary form, so long as an
+ * acknowledgment appears in derived source files.  
+ * No warranty is attached;
+ * we cannot take responsibility for errors or fitness for use.
+ *
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <stdio.h>
+#if 0
+#include <asm/unistd.h>
+#endif
+#include <string.h>
+#include <errno.h>
+
+#define swifi_inject_fault sys_inject_fault
+
+#include "swifi-user.h"
+#include "extra.h"
+
+
+#if 0
+_syscall6(long, swifi_inject_fault, 
+	  char *, module_name,
+	  unsigned long, faultType,
+	  unsigned long, randSeed,
+	  unsigned long, numFaults,
+	  void *, result,
+	  unsigned long, do_inject);
+#endif
+
+int
+main(int argc, char * argv[])
+{
+  char * module_name = NULL;
+  int i;
+  long result = 0;
+  unsigned int cmd = 0;
+  unsigned long arg = 0;
+  unsigned long seed = 157;
+  swifi_result_t * res = NULL;
+
+  if (argc < 2) {
+    goto Usage;
+  }
+
+  for (i = 1; i < argc; i++ ) {
+    if (strcmp(argv[i], "-f") == 0) {
+      if (argc <= i+5) {
+	goto Usage;
+      }
+      module_name = victim_exe = argv[++i];
+      sscanf(argv[++i],"%u", &victim_pid);
+      sscanf(argv[++i],"%u", &cmd);
+      sscanf(argv[++i],"%lu", &arg);
+      sscanf(argv[++i],"%lu", &seed);
+    } else {
+      printf("Unknown command %s\n", argv[i]);
+      goto Usage;
+    }
+  }
+
+  res = malloc(arg * sizeof(swifi_result_t));
+  if (res == NULL) {
+    printf("Out of memory\n");
+    goto Cleanup;
+  }
+
+  memset(res, 0, sizeof(res));
+
+  /*
+  // Find out where the faults will be injected
+  */
+  
+  result = swifi_inject_fault(module_name, 
+			      cmd,         /* fault type */
+			      seed,           /* random seed */
+			      arg,         /* numFaults */
+			      res,
+			      0);  /* don't inject now */
+  
+  for (i = 0; (i < arg) && (res[i].address != 0) ; i++) {
+    printf("Changed 0x%lx from 0x%lx to 0x%lx\n",
+	   res[i].address,
+	   res[i].old,
+	   res[i].new);
+  }
+  
+  /*
+  // do the injection
+  */
+  
+
+  result = swifi_inject_fault(module_name, 
+			      cmd,         /* fault type */
+			      seed,           /* random seed */
+			      arg,         /* numFaults */
+			      res,
+			      1);  /* do inject now */
+
+  printf("swifi_inject_fault returned %ld (%d)\n", result,errno);
+
+
+
+ Cleanup:
+  if (res != NULL) {
+    free(res);
+  }
+  return(0);
+
+ Usage:
+  printf("Usage: %s -f module_name pid fault-type fault-count seed\n", argv[0]);
+  goto Cleanup;
+}
+
+