* Add this nice filesystem testing tool that I've recently
authorDavid Rhodus <drhodus@dragonflybsd.org>
Sat, 11 Oct 2003 13:37:14 +0000 (13:37 +0000)
committerDavid Rhodus <drhodus@dragonflybsd.org>
Sat, 11 Oct 2003 13:37:14 +0000 (13:37 +0000)
missed having close by.

test/stress/fsx/Makefile [new file with mode: 0644]
test/stress/fsx/fsx.c [new file with mode: 0644]
tools/regression/fsx/Makefile [new file with mode: 0644]
tools/regression/fsx/fsx.c [new file with mode: 0644]

diff --git a/test/stress/fsx/Makefile b/test/stress/fsx/Makefile
new file mode 100644 (file)
index 0000000..0c31ac0
--- /dev/null
@@ -0,0 +1,7 @@
+# $DragonFly: src/test/stress/fsx/Makefile,v 1.1 2003/10/11 13:37:14 drhodus Exp $
+
+PROG=  fsx
+
+NOMAN= yes
+
+.include <bsd.prog.mk>
diff --git a/test/stress/fsx/fsx.c b/test/stress/fsx/fsx.c
new file mode 100644 (file)
index 0000000..d192ded
--- /dev/null
@@ -0,0 +1,1148 @@
+/*
+ * Copyright (c) 1998-2001 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.2 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ *
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ *
+ *     File:   fsx.c
+ *     Author: Avadis Tevanian, Jr.
+ *
+ *     File system exerciser. 
+ *
+ *     Rewrite and enhancements 1998-2001 Conrad Minshall -- conrad@mac.com
+ *
+ *     Various features from Joe Sokol, Pat Dirks, and Clark Warner.
+ *
+ *     Small changes to work under Linux -- davej@suse.de
+ *
+ *     Sundry porting patches from Guy Harris 12/2001
+ *
+ *     Checks for mmap last-page zero fill.
+ *
+ * $FreeBSD: src/tools/regression/fsx/fsx.c,v 1.2 2003/04/23 23:42:23 jkh Exp $
+ * $DragonFly: src/test/stress/fsx/fsx.c,v 1.1 2003/10/11 13:37:14 drhodus Exp $
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef _UWIN
+# include <sys/param.h>
+# include <limits.h>
+# include <time.h>
+# include <strings.h>
+#endif
+#include <fcntl.h>
+#include <sys/mman.h>
+#ifndef MAP_FILE
+# define MAP_FILE 0
+#endif
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#define NUMPRINTCOLUMNS 32     /* # columns of data to print on each line */
+
+/*
+ *     A log entry is an operation and a bunch of arguments.
+ */
+
+struct log_entry {
+       int     operation;
+       int     args[3];
+};
+
+#define        LOGSIZE 1000
+
+struct log_entry       oplog[LOGSIZE]; /* the log */
+int                    logptr = 0;     /* current position in log */
+int                    logcount = 0;   /* total ops */
+
+/*
+ *     Define operations
+ */
+
+#define        OP_READ         1
+#define OP_WRITE       2
+#define OP_TRUNCATE    3
+#define OP_CLOSEOPEN   4
+#define OP_MAPREAD     5
+#define OP_MAPWRITE    6
+#define OP_SKIPPED     7
+
+int page_size;
+int page_mask;
+
+char   *original_buf;                  /* a pointer to the original data */
+char   *good_buf;                      /* a pointer to the correct data */
+char   *temp_buf;                      /* a pointer to the current data */
+char   *fname;                         /* name of our test file */
+int    fd;                             /* fd for our test file */
+
+off_t          file_size = 0;
+off_t          biggest = 0;
+char           state[256];
+unsigned long  testcalls = 0;          /* calls to function "test" */
+
+unsigned long  simulatedopcount = 0;   /* -b flag */
+int    closeprob = 0;                  /* -c flag */
+int    debug = 0;                      /* -d flag */
+unsigned long  debugstart = 0;         /* -D flag */
+unsigned long  maxfilelen = 256 * 1024;        /* -l flag */
+int    sizechecks = 1;                 /* -n flag disables them */
+int    maxoplen = 64 * 1024;           /* -o flag */
+int    quiet = 0;                      /* -q flag */
+unsigned long progressinterval = 0;    /* -p flag */
+int    readbdy = 1;                    /* -r flag */
+int    style = 0;                      /* -s flag */
+int    truncbdy = 1;                   /* -t flag */
+int    writebdy = 1;                   /* -w flag */
+long   monitorstart = -1;              /* -m flag */
+long   monitorend = -1;                /* -m flag */
+int    lite = 0;                       /* -L flag */
+long   numops = -1;                    /* -N flag */
+int    randomoplen = 1;                /* -O flag disables it */
+int    seed = 1;                       /* -S flag */
+int     mapped_writes = 1;           /* -W flag disables */
+int    mapped_reads = 1;               /* -R flag disables it */
+int    fsxgoodfd = 0;
+FILE * fsxlogf = NULL;
+int badoff = -1;
+int closeopen = 0;
+
+
+void
+vwarnc(code, fmt, ap)
+       int code;
+       const char *fmt;
+       va_list ap;
+{
+       fprintf(stderr, "fsx: ");
+       if (fmt != NULL) {
+               vfprintf(stderr, fmt, ap);
+               fprintf(stderr, ": ");
+       }
+       fprintf(stderr, "%s\n", strerror(code));
+}
+
+
+void
+warn(const char * fmt, ...)
+{
+       va_list ap;
+       va_start(ap, fmt);
+       vwarnc(errno, fmt, ap);
+       va_end(ap);
+}
+
+
+void
+prt(char *fmt, ...)
+{
+       va_list args;
+
+       va_start(args, fmt);
+       vfprintf(stdout, fmt, args);
+       if (fsxlogf)
+               vfprintf(fsxlogf, fmt, args);
+       va_end(args);
+}
+
+void
+prterr(char *prefix)
+{
+       prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
+}
+
+
+void
+log4(int operation, int arg0, int arg1, int arg2)
+{
+       struct log_entry *le;
+
+       le = &oplog[logptr];
+       le->operation = operation;
+       if (closeopen)
+               le->operation = ~ le->operation;
+       le->args[0] = arg0;
+       le->args[1] = arg1;
+       le->args[2] = arg2;
+       logptr++;
+       logcount++;
+       if (logptr >= LOGSIZE)
+               logptr = 0;
+}
+
+
+void
+logdump(void)
+{
+       int     i, count, down;
+       struct log_entry        *lp;
+
+       prt("LOG DUMP (%d total operations):\n", logcount);
+       if (logcount < LOGSIZE) {
+               i = 0;
+               count = logcount;
+       } else {
+               i = logptr;
+               count = LOGSIZE;
+       }
+       for ( ; count > 0; count--) {
+               int opnum;
+
+               opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
+               prt("%d(%d mod 256): ", opnum, opnum%256);
+               lp = &oplog[i];
+               if ((closeopen = lp->operation < 0))
+                       lp->operation = ~ lp->operation;
+                       
+               switch (lp->operation) {
+               case OP_MAPREAD:
+                       prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
+                           lp->args[0], lp->args[0] + lp->args[1] - 1,
+                           lp->args[1]);
+                       if (badoff >= lp->args[0] && badoff <
+                                                    lp->args[0] + lp->args[1])
+                               prt("\t***RRRR***");
+                       break;
+               case OP_MAPWRITE:
+                       prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
+                           lp->args[0], lp->args[0] + lp->args[1] - 1,
+                           lp->args[1]);
+                       if (badoff >= lp->args[0] && badoff <
+                                                    lp->args[0] + lp->args[1])
+                               prt("\t******WWWW");
+                       break;
+               case OP_READ:
+                       prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
+                           lp->args[0], lp->args[0] + lp->args[1] - 1,
+                           lp->args[1]);
+                       if (badoff >= lp->args[0] &&
+                           badoff < lp->args[0] + lp->args[1])
+                               prt("\t***RRRR***");
+                       break;
+               case OP_WRITE:
+                       prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
+                           lp->args[0], lp->args[0] + lp->args[1] - 1,
+                           lp->args[1]);
+                       if (lp->args[0] > lp->args[2])
+                               prt(" HOLE");
+                       else if (lp->args[0] + lp->args[1] > lp->args[2])
+                               prt(" EXTEND");
+                       if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
+                           badoff < lp->args[0] + lp->args[1])
+                               prt("\t***WWWW");
+                       break;
+               case OP_TRUNCATE:
+                       down = lp->args[0] < lp->args[1];
+                       prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
+                           down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
+                       if (badoff >= lp->args[!down] &&
+                           badoff < lp->args[!!down])
+                               prt("\t******WWWW");
+                       break;
+               case OP_SKIPPED:
+                       prt("SKIPPED (no operation)");
+                       break;
+               default:
+                       prt("BOGUS LOG ENTRY (operation code = %d)!",
+                           lp->operation);
+               }
+               if (closeopen)
+                       prt("\n\t\tCLOSE/OPEN");
+               prt("\n");
+               i++;
+               if (i == LOGSIZE)
+                       i = 0;
+       }
+}
+
+
+void
+save_buffer(char *buffer, off_t bufferlength, int fd)
+{
+       off_t ret;
+       ssize_t byteswritten;
+
+       if (fd <= 0 || bufferlength == 0)
+               return;
+
+       if (bufferlength > SSIZE_MAX) {
+               prt("fsx flaw: overflow in save_buffer\n");
+               exit(67);
+       }
+       if (lite) {
+               off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END);
+               if (size_by_seek == (off_t)-1)
+                       prterr("save_buffer: lseek eof");
+               else if (bufferlength > size_by_seek) {
+                       warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek,
+                            (unsigned long long)bufferlength);
+                       bufferlength = size_by_seek;
+               }
+       }
+
+       ret = lseek(fd, (off_t)0, SEEK_SET);
+       if (ret == (off_t)-1)
+               prterr("save_buffer: lseek 0");
+       
+       byteswritten = write(fd, buffer, (size_t)bufferlength);
+       if (byteswritten != bufferlength) {
+               if (byteswritten == -1)
+                       prterr("save_buffer write");
+               else
+                       warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n",
+                            (unsigned)byteswritten,
+                            (unsigned long long)bufferlength);
+       }
+}
+
+
+void
+report_failure(int status)
+{
+       logdump();
+       
+       if (fsxgoodfd) {
+               if (good_buf) {
+                       save_buffer(good_buf, file_size, fsxgoodfd);
+                       prt("Correct content saved for comparison\n");
+                       prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
+                           fname, fname);
+               }
+               close(fsxgoodfd);
+       }
+       exit(status);
+}
+
+
+#define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
+                                       *(((unsigned char *)(cp)) + 1)))
+
+void
+check_buffers(unsigned offset, unsigned size)
+{
+       unsigned char c, t;
+       unsigned i = 0;
+       unsigned n = 0;
+       unsigned op = 0;
+       unsigned bad = 0;
+
+       if (memcmp(good_buf + offset, temp_buf, size) != 0) {
+               prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
+                   offset, size);
+               prt("OFFSET\tGOOD\tBAD\tRANGE\n");
+               while (size > 0) {
+                       c = good_buf[offset];
+                       t = temp_buf[i];
+                       if (c != t) {
+                               if (n == 0) {
+                                       bad = short_at(&temp_buf[i]);
+                                       prt("0x%5x\t0x%04x\t0x%04x", offset,
+                                           short_at(&good_buf[offset]), bad);
+                                       op = temp_buf[offset & 1 ? i+1 : i];
+                               }
+                               n++;
+                               badoff = offset;
+                       }
+                       offset++;
+                       i++;
+                       size--;
+               }
+               if (n) {
+                       prt("\t0x%5x\n", n);
+                       if (bad)
+                               prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff));
+                       else
+                               prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n");
+               } else
+                       prt("????????????????\n");
+               report_failure(110);
+       }
+}
+
+
+void
+check_size(void)
+{
+       struct stat     statbuf;
+       off_t   size_by_seek;
+
+       if (fstat(fd, &statbuf)) {
+               prterr("check_size: fstat");
+               statbuf.st_size = -1;
+       }
+       size_by_seek = lseek(fd, (off_t)0, SEEK_END);
+       if (file_size != statbuf.st_size || file_size != size_by_seek) {
+               prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
+                   (unsigned long long)file_size,
+                   (unsigned long long)statbuf.st_size,
+                   (unsigned long long)size_by_seek);
+               report_failure(120);
+       }
+}
+
+
+void
+check_trunc_hack(void)
+{
+       struct stat statbuf;
+
+       ftruncate(fd, (off_t)0);
+       ftruncate(fd, (off_t)100000);
+       fstat(fd, &statbuf);
+       if (statbuf.st_size != (off_t)100000) {
+               prt("no extend on truncate! not posix!\n");
+               exit(130);
+       }
+       ftruncate(fd, (off_t)0);
+}
+
+
+void
+doread(unsigned offset, unsigned size)
+{
+       off_t ret;
+       unsigned iret;
+
+       offset -= offset % readbdy;
+       if (size == 0) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping zero size read\n");
+               log4(OP_SKIPPED, OP_READ, offset, size);
+               return;
+       }
+       if (size + offset > file_size) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping seek/read past end of file\n");
+               log4(OP_SKIPPED, OP_READ, offset, size);
+               return;
+       }
+
+       log4(OP_READ, offset, size, 0);
+
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (!quiet && ((progressinterval &&
+                       testcalls % progressinterval == 0) ||
+                      (debug &&
+                       (monitorstart == -1 ||
+                        (offset + size > monitorstart &&
+                         (monitorend == -1 || offset <= monitorend))))))
+               prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
+                   offset, offset + size - 1, size);
+       ret = lseek(fd, (off_t)offset, SEEK_SET);
+       if (ret == (off_t)-1) {
+               prterr("doread: lseek");
+               report_failure(140);
+       }
+       iret = read(fd, temp_buf, size);
+       if (iret != size) {
+               if (iret == -1)
+                       prterr("doread: read");
+               else
+                       prt("short read: 0x%x bytes instead of 0x%x\n",
+                           iret, size);
+               report_failure(141);
+       }
+       check_buffers(offset, size);
+}
+
+
+void
+check_eofpage(char *s, unsigned offset, char *p, int size)
+{
+       unsigned last_page, should_be_zero;
+
+       if (offset + size <= (file_size & ~page_mask))
+               return;
+       /*
+        * we landed in the last page of the file
+        * test to make sure the VM system provided 0's 
+        * beyond the true end of the file mapping
+        * (as required by mmap def in 1996 posix 1003.1)
+        */
+       last_page = ((int)p + (offset & page_mask) + size) & ~page_mask;
+
+       for (should_be_zero = last_page + (file_size & page_mask);
+            should_be_zero < last_page + page_size;
+            should_be_zero++)
+               if (*(char *)should_be_zero) {
+                       prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n",
+                           s, file_size - 1, should_be_zero & page_mask,
+                           short_at(should_be_zero));
+                       report_failure(205);
+               }
+}
+
+
+void
+domapread(unsigned offset, unsigned size)
+{
+       unsigned pg_offset;
+       unsigned map_size;
+       char    *p;
+
+       offset -= offset % readbdy;
+       if (size == 0) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping zero size read\n");
+               log4(OP_SKIPPED, OP_MAPREAD, offset, size);
+               return;
+       }
+       if (size + offset > file_size) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping seek/read past end of file\n");
+               log4(OP_SKIPPED, OP_MAPREAD, offset, size);
+               return;
+       }
+
+       log4(OP_MAPREAD, offset, size, 0);
+
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (!quiet && ((progressinterval &&
+                       testcalls % progressinterval == 0) ||
+                      (debug &&
+                       (monitorstart == -1 ||
+                        (offset + size > monitorstart &&
+                         (monitorend == -1 || offset <= monitorend))))))
+               prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
+                   offset, offset + size - 1, size);
+
+       pg_offset = offset & page_mask;
+       map_size  = pg_offset + size;
+
+       if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd,
+                             (off_t)(offset - pg_offset))) == (char *)-1) {
+               prterr("domapread: mmap");
+               report_failure(190);
+       }
+       memcpy(temp_buf, p + pg_offset, size);
+
+       check_eofpage("Read", offset, p, size);
+
+       if (munmap(p, map_size) != 0) {
+               prterr("domapread: munmap");
+               report_failure(191);
+       }
+
+       check_buffers(offset, size);
+}
+
+
+void
+gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
+{
+       while (size--) {
+               good_buf[offset] = testcalls % 256; 
+               if (offset % 2)
+                       good_buf[offset] += original_buf[offset];
+               offset++;
+       }
+}
+
+
+void
+dowrite(unsigned offset, unsigned size)
+{
+       off_t ret;
+       unsigned iret;
+
+       offset -= offset % writebdy;
+       if (size == 0) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping zero size write\n");
+               log4(OP_SKIPPED, OP_WRITE, offset, size);
+               return;
+       }
+
+       log4(OP_WRITE, offset, size, file_size);
+
+       gendata(original_buf, good_buf, offset, size);
+       if (file_size < offset + size) {
+               if (file_size < offset)
+                       memset(good_buf + file_size, '\0', offset - file_size);
+               file_size = offset + size;
+               if (lite) {
+                       warn("Lite file size bug in fsx!");
+                       report_failure(149);
+               }
+       }
+
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (!quiet && ((progressinterval &&
+                       testcalls % progressinterval == 0) ||
+                      (debug &&
+                       (monitorstart == -1 ||
+                        (offset + size > monitorstart &&
+                         (monitorend == -1 || offset <= monitorend))))))
+               prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
+                   offset, offset + size - 1, size);
+       ret = lseek(fd, (off_t)offset, SEEK_SET);
+       if (ret == (off_t)-1) {
+               prterr("dowrite: lseek");
+               report_failure(150);
+       }
+       iret = write(fd, good_buf + offset, size);
+       if (iret != size) {
+               if (iret == -1)
+                       prterr("dowrite: write");
+               else
+                       prt("short write: 0x%x bytes instead of 0x%x\n",
+                           iret, size);
+               report_failure(151);
+       }
+}
+
+
+void
+domapwrite(unsigned offset, unsigned size)
+{
+       unsigned pg_offset;
+       unsigned map_size;
+       off_t    cur_filesize;
+       char    *p;
+
+       offset -= offset % writebdy;
+       if (size == 0) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping zero size write\n");
+               log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
+               return;
+       }
+       cur_filesize = file_size;
+
+       log4(OP_MAPWRITE, offset, size, 0);
+
+       gendata(original_buf, good_buf, offset, size);
+       if (file_size < offset + size) {
+               if (file_size < offset)
+                       memset(good_buf + file_size, '\0', offset - file_size);
+               file_size = offset + size;
+               if (lite) {
+                       warn("Lite file size bug in fsx!");
+                       report_failure(200);
+               }
+       }
+
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (!quiet && ((progressinterval &&
+                       testcalls % progressinterval == 0) ||
+                      (debug &&
+                       (monitorstart == -1 ||
+                        (offset + size > monitorstart &&
+                         (monitorend == -1 || offset <= monitorend))))))
+               prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
+                   offset, offset + size - 1, size);
+
+       if (file_size > cur_filesize) {
+               if (ftruncate(fd, file_size) == -1) {
+                       prterr("domapwrite: ftruncate");
+                       exit(201);
+               }
+       }
+       pg_offset = offset & page_mask;
+       map_size  = pg_offset + size;
+
+       if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
+                             MAP_FILE | MAP_SHARED, fd,
+                             (off_t)(offset - pg_offset))) == (char *)-1) {
+               prterr("domapwrite: mmap");
+               report_failure(202);
+       }
+       memcpy(p + pg_offset, good_buf + offset, size);
+       if (msync(p, map_size, 0) != 0) {
+               prterr("domapwrite: msync");
+               report_failure(203);
+       }
+
+       check_eofpage("Write", offset, p, size);
+
+       if (munmap(p, map_size) != 0) {
+               prterr("domapwrite: munmap");
+               report_failure(204);
+       }
+}
+
+
+void
+dotruncate(unsigned size)
+{
+       int oldsize = file_size;
+
+       size -= size % truncbdy;
+       if (size > biggest) {
+               biggest = size;
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("truncating to largest ever: 0x%x\n", size);
+       }
+
+       log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
+
+       if (size > file_size)
+               memset(good_buf + file_size, '\0', size - file_size);
+       file_size = size;
+
+       if (testcalls <= simulatedopcount)
+               return;
+       
+       if ((progressinterval && testcalls % progressinterval == 0) ||
+           (debug && (monitorstart == -1 || monitorend == -1 ||
+                      size <= monitorend)))
+               prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
+       if (ftruncate(fd, (off_t)size) == -1) {
+               prt("ftruncate1: %x\n", size);
+               prterr("dotruncate: ftruncate");
+               report_failure(160);
+       }
+}
+
+
+void
+writefileimage()
+{
+       ssize_t iret;
+
+       if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
+               prterr("writefileimage: lseek");
+               report_failure(171);
+       }
+       iret = write(fd, good_buf, file_size);
+       if ((off_t)iret != file_size) {
+               if (iret == -1)
+                       prterr("writefileimage: write");
+               else
+                       prt("short write: 0x%x bytes instead of 0x%llx\n",
+                           iret, (unsigned long long)file_size);
+               report_failure(172);
+       }
+       if (lite ? 0 : ftruncate(fd, file_size) == -1) {
+               prt("ftruncate2: %llx\n", (unsigned long long)file_size);
+               prterr("writefileimage: ftruncate");
+               report_failure(173);
+       }
+}
+
+
+void
+docloseopen(void)
+{ 
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (debug)
+               prt("%lu close/open\n", testcalls);
+       if (close(fd)) {
+               prterr("docloseopen: close");
+               report_failure(180);
+       }
+       fd = open(fname, O_RDWR, 0);
+       if (fd < 0) {
+               prterr("docloseopen: open");
+               report_failure(181);
+       }
+}
+
+
+void
+test(void)
+{
+       unsigned long   offset;
+       unsigned long   size = maxoplen;
+       unsigned long   rv = random();
+       unsigned long   op = rv % (3 + !lite + mapped_writes);
+
+       /* turn off the map read if necessary */
+
+       if (op == 2 && !mapped_reads)
+           op = 0;
+
+       if (simulatedopcount > 0 && testcalls == simulatedopcount)
+               writefileimage();
+
+       testcalls++;
+
+       if (closeprob)
+               closeopen = (rv >> 3) < (1 << 28) / closeprob;
+
+       if (debugstart > 0 && testcalls >= debugstart)
+               debug = 1;
+
+       if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
+               prt("%lu...\n", testcalls);
+
+       /*
+        * READ:        op = 0
+        * WRITE:       op = 1
+        * MAPREAD:     op = 2
+        * TRUNCATE:    op = 3
+        * MAPWRITE:    op = 3 or 4
+        */
+       if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */
+               dotruncate(random() % maxfilelen);
+       else {
+               if (randomoplen)
+                       size = random() % (maxoplen+1);
+               if (lite ? 0 : op == 3)
+                       dotruncate(size);
+               else {
+                       offset = random();
+                       if (op == 1 || op == (lite ? 3 : 4)) {
+                               offset %= maxfilelen;
+                               if (offset + size > maxfilelen)
+                                       size = maxfilelen - offset;
+                               if (op != 1)
+                                       domapwrite(offset, size);
+                               else
+                                       dowrite(offset, size);
+                       } else {
+                               if (file_size)
+                                       offset %= file_size;
+                               else
+                                       offset = 0;
+                               if (offset + size > file_size)
+                                       size = file_size - offset;
+                               if (op != 0)
+                                       domapread(offset, size);
+                               else
+                                       doread(offset, size);
+                       }
+               }
+       }
+       if (sizechecks && testcalls > simulatedopcount)
+               check_size();
+       if (closeopen)
+               docloseopen();
+}
+
+
+void
+cleanup(sig)
+       int     sig;
+{
+       if (sig)
+               prt("signal %d\n", sig);
+       prt("testcalls = %lu\n", testcalls);
+       exit(sig);
+}
+
+
+void
+usage(void)
+{
+       fprintf(stdout, "usage: %s",
+               "fsx [-dnqLOW] [-b opnum] [-c Prob] [-l flen] [-m start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] fname\n\
+       -b opnum: beginning operation number (default 1)\n\
+       -c P: 1 in P chance of file close+open at each op (default infinity)\n\
+       -d: debug output for all operations\n\
+       -l flen: the upper bound on file size (default 262144)\n\
+       -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
+       -n: no verifications of file size\n\
+       -o oplen: the upper bound on operation size (default 65536)\n\
+       -p progressinterval: debug output at specified operation interval\n\
+       -q: quieter operation\n\
+       -r readbdy: 4096 would make reads page aligned (default 1)\n\
+       -s style: 1 gives smaller truncates (default 0)\n\
+       -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
+       -w writebdy: 4096 would make writes page aligned (default 1)\n\
+       -D startingop: debug output starting at specified operation\n\
+       -L: fsxLite - no file creations & no file size changes\n\
+       -N numops: total # operations to do (default infinity)\n\
+       -O: use oplen (see -o flag) for every op (default random)\n\
+       -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
+       -S seed: for random # generator (default 1) 0 gets timestamp\n\
+       -W: mapped write operations DISabled\n\
+       -R: mapped read operations DISabled)\n\
+       fname: this filename is REQUIRED (no default)\n");
+       exit(90);
+}
+
+
+int
+getnum(char *s, char **e)
+{
+       int ret = -1;
+
+       *e = (char *) 0;
+       ret = strtol(s, e, 0);
+       if (*e)
+               switch (**e) {
+               case 'b':
+               case 'B':
+                       ret *= 512;
+                       *e = *e + 1;
+                       break;
+               case 'k':
+               case 'K':
+                       ret *= 1024;
+                       *e = *e + 1;
+                       break;
+               case 'm':
+               case 'M':
+                       ret *= 1024*1024;
+                       *e = *e + 1;
+                       break;
+               case 'w':
+               case 'W':
+                       ret *= 4;
+                       *e = *e + 1;
+                       break;
+               }
+       return (ret);
+}
+
+
+int
+main(int argc, char **argv)
+{
+       int     i, ch;
+       char    *endp;
+       char goodfile[1024];
+       char logfile[1024];
+
+       goodfile[0] = 0;
+       logfile[0] = 0;
+
+       page_size = getpagesize();
+       page_mask = page_size - 1;
+
+       setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
+
+       while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:D:LN:OP:RS:W"))
+              != EOF)
+               switch (ch) {
+               case 'b':
+                       simulatedopcount = getnum(optarg, &endp);
+                       if (!quiet)
+                               fprintf(stdout, "Will begin at operation %ld\n",
+                                       simulatedopcount);
+                       if (simulatedopcount == 0)
+                               usage();
+                       simulatedopcount -= 1;
+                       break;
+               case 'c':
+                       closeprob = getnum(optarg, &endp);
+                       if (!quiet)
+                               fprintf(stdout,
+                                       "Chance of close/open is 1 in %d\n",
+                                       closeprob);
+                       if (closeprob <= 0)
+                               usage();
+                       break;
+               case 'd':
+                       debug = 1;
+                       break;
+               case 'l':
+                       maxfilelen = getnum(optarg, &endp);
+                       if (maxfilelen <= 0)
+                               usage();
+                       break;
+               case 'm':
+                       monitorstart = getnum(optarg, &endp);
+                       if (monitorstart < 0)
+                               usage();
+                       if (!endp || *endp++ != ':')
+                               usage();
+                       monitorend = getnum(endp, &endp);
+                       if (monitorend < 0)
+                               usage();
+                       if (monitorend == 0)
+                               monitorend = -1; /* aka infinity */
+                       debug = 1;
+               case 'n':
+                       sizechecks = 0;
+                       break;
+               case 'o':
+                       maxoplen = getnum(optarg, &endp);
+                       if (maxoplen <= 0)
+                               usage();
+                       break;
+               case 'p':
+                       progressinterval = getnum(optarg, &endp);
+                       if (progressinterval < 0)
+                               usage();
+                       break;
+               case 'q':
+                       quiet = 1;
+                       break;
+               case 'r':
+                       readbdy = getnum(optarg, &endp);
+                       if (readbdy <= 0)
+                               usage();
+                       break;
+               case 's':
+                       style = getnum(optarg, &endp);
+                       if (style < 0 || style > 1)
+                               usage();
+                       break;
+               case 't':
+                       truncbdy = getnum(optarg, &endp);
+                       if (truncbdy <= 0)
+                               usage();
+                       break;
+               case 'w':
+                       writebdy = getnum(optarg, &endp);
+                       if (writebdy <= 0)
+                               usage();
+                       break;
+               case 'D':
+                       debugstart = getnum(optarg, &endp);
+                       if (debugstart < 1)
+                               usage();
+                       break;
+               case 'L':
+                       lite = 1;
+                       break;
+               case 'N':
+                       numops = getnum(optarg, &endp);
+                       if (numops < 0)
+                               usage();
+                       break;
+               case 'O':
+                       randomoplen = 0;
+                       break;
+               case 'P':
+                       strncpy(goodfile, optarg, sizeof(goodfile));
+                       strcat(goodfile, "/");
+                       strncpy(logfile, optarg, sizeof(logfile));
+                       strcat(logfile, "/");
+                       break;
+               case 'R':
+                       mapped_reads = 0;
+                       break;
+               case 'S':
+                       seed = getnum(optarg, &endp);
+                       if (seed == 0)
+                               seed = time(0) % 10000;
+                       if (!quiet)
+                               fprintf(stdout, "Seed set to %d\n", seed);
+                       if (seed < 0)
+                               usage();
+                       break;
+               case 'W':
+                       mapped_writes = 0;
+                       if (!quiet)
+                               fprintf(stdout, "mapped writes DISABLED\n");
+                       break;
+
+               default:
+                       usage();
+                       /* NOTREACHED */
+               }
+       argc -= optind;
+       argv += optind;
+       if (argc != 1)
+               usage();
+       fname = argv[0];
+
+       signal(SIGHUP,  cleanup);
+       signal(SIGINT,  cleanup);
+       signal(SIGPIPE, cleanup);
+       signal(SIGALRM, cleanup);
+       signal(SIGTERM, cleanup);
+       signal(SIGXCPU, cleanup);
+       signal(SIGXFSZ, cleanup);
+       signal(SIGVTALRM,       cleanup);
+       signal(SIGUSR1, cleanup);
+       signal(SIGUSR2, cleanup);
+
+       initstate(seed, state, 256);
+       setstate(state);
+       fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666);
+       if (fd < 0) {
+               prterr(fname);
+               exit(91);
+       }
+       strncat(goodfile, fname, 256);
+       strcat (goodfile, ".fsxgood");
+       fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
+       if (fsxgoodfd < 0) {
+               prterr(goodfile);
+               exit(92);
+       }
+       strncat(logfile, fname, 256);
+       strcat (logfile, ".fsxlog");
+       fsxlogf = fopen(logfile, "w");
+       if (fsxlogf == NULL) {
+               prterr(logfile);
+               exit(93);
+       }
+       if (lite) {
+               off_t ret;
+               file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
+               if (file_size == (off_t)-1) {
+                       prterr(fname);
+                       warn("main: lseek eof");
+                       exit(94);
+               }
+               ret = lseek(fd, (off_t)0, SEEK_SET);
+               if (ret == (off_t)-1) {
+                       prterr(fname);
+                       warn("main: lseek 0");
+                       exit(95);
+               }
+       }
+       original_buf = (char *) malloc(maxfilelen);
+       for (i = 0; i < maxfilelen; i++)
+               original_buf[i] = random() % 256;
+       good_buf = (char *) malloc(maxfilelen);
+       memset(good_buf, '\0', maxfilelen);
+       temp_buf = (char *) malloc(maxoplen);
+       memset(temp_buf, '\0', maxoplen);
+       if (lite) {     /* zero entire existing file */
+               ssize_t written;
+
+               written = write(fd, good_buf, (size_t)maxfilelen);
+               if (written != maxfilelen) {
+                       if (written == -1) {
+                               prterr(fname);
+                               warn("main: error on write");
+                       } else
+                               warn("main: short write, 0x%x bytes instead of 0x%x\n",
+                                    (unsigned)written, maxfilelen);
+                       exit(98);
+               }
+       } else 
+               check_trunc_hack();
+
+       while (numops == -1 || numops--)
+               test();
+
+       if (close(fd)) {
+               prterr("close");
+               report_failure(99);
+       }
+       prt("All operations completed A-OK!\n");
+
+       exit(0);
+       return 0;
+}
+
diff --git a/tools/regression/fsx/Makefile b/tools/regression/fsx/Makefile
new file mode 100644 (file)
index 0000000..e06cef8
--- /dev/null
@@ -0,0 +1,7 @@
+# $DragonFly: src/tools/regression/fsx/Makefile,v 1.1 2003/10/11 13:37:14 drhodus Exp $
+
+PROG=  fsx
+
+NOMAN= yes
+
+.include <bsd.prog.mk>
diff --git a/tools/regression/fsx/fsx.c b/tools/regression/fsx/fsx.c
new file mode 100644 (file)
index 0000000..ec1966e
--- /dev/null
@@ -0,0 +1,1148 @@
+/*
+ * Copyright (c) 1998-2001 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.2 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ *
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ *
+ *     File:   fsx.c
+ *     Author: Avadis Tevanian, Jr.
+ *
+ *     File system exerciser. 
+ *
+ *     Rewrite and enhancements 1998-2001 Conrad Minshall -- conrad@mac.com
+ *
+ *     Various features from Joe Sokol, Pat Dirks, and Clark Warner.
+ *
+ *     Small changes to work under Linux -- davej@suse.de
+ *
+ *     Sundry porting patches from Guy Harris 12/2001
+ *
+ *     Checks for mmap last-page zero fill.
+ *
+ * $FreeBSD: src/tools/regression/fsx/fsx.c,v 1.2 2003/04/23 23:42:23 jkh Exp $
+ * $DragonFly: src/tools/regression/fsx/fsx.c,v 1.1 2003/10/11 13:37:14 drhodus Exp $
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef _UWIN
+# include <sys/param.h>
+# include <limits.h>
+# include <time.h>
+# include <strings.h>
+#endif
+#include <fcntl.h>
+#include <sys/mman.h>
+#ifndef MAP_FILE
+# define MAP_FILE 0
+#endif
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#define NUMPRINTCOLUMNS 32     /* # columns of data to print on each line */
+
+/*
+ *     A log entry is an operation and a bunch of arguments.
+ */
+
+struct log_entry {
+       int     operation;
+       int     args[3];
+};
+
+#define        LOGSIZE 1000
+
+struct log_entry       oplog[LOGSIZE]; /* the log */
+int                    logptr = 0;     /* current position in log */
+int                    logcount = 0;   /* total ops */
+
+/*
+ *     Define operations
+ */
+
+#define        OP_READ         1
+#define OP_WRITE       2
+#define OP_TRUNCATE    3
+#define OP_CLOSEOPEN   4
+#define OP_MAPREAD     5
+#define OP_MAPWRITE    6
+#define OP_SKIPPED     7
+
+int page_size;
+int page_mask;
+
+char   *original_buf;                  /* a pointer to the original data */
+char   *good_buf;                      /* a pointer to the correct data */
+char   *temp_buf;                      /* a pointer to the current data */
+char   *fname;                         /* name of our test file */
+int    fd;                             /* fd for our test file */
+
+off_t          file_size = 0;
+off_t          biggest = 0;
+char           state[256];
+unsigned long  testcalls = 0;          /* calls to function "test" */
+
+unsigned long  simulatedopcount = 0;   /* -b flag */
+int    closeprob = 0;                  /* -c flag */
+int    debug = 0;                      /* -d flag */
+unsigned long  debugstart = 0;         /* -D flag */
+unsigned long  maxfilelen = 256 * 1024;        /* -l flag */
+int    sizechecks = 1;                 /* -n flag disables them */
+int    maxoplen = 64 * 1024;           /* -o flag */
+int    quiet = 0;                      /* -q flag */
+unsigned long progressinterval = 0;    /* -p flag */
+int    readbdy = 1;                    /* -r flag */
+int    style = 0;                      /* -s flag */
+int    truncbdy = 1;                   /* -t flag */
+int    writebdy = 1;                   /* -w flag */
+long   monitorstart = -1;              /* -m flag */
+long   monitorend = -1;                /* -m flag */
+int    lite = 0;                       /* -L flag */
+long   numops = -1;                    /* -N flag */
+int    randomoplen = 1;                /* -O flag disables it */
+int    seed = 1;                       /* -S flag */
+int     mapped_writes = 1;           /* -W flag disables */
+int    mapped_reads = 1;               /* -R flag disables it */
+int    fsxgoodfd = 0;
+FILE * fsxlogf = NULL;
+int badoff = -1;
+int closeopen = 0;
+
+
+void
+vwarnc(code, fmt, ap)
+       int code;
+       const char *fmt;
+       va_list ap;
+{
+       fprintf(stderr, "fsx: ");
+       if (fmt != NULL) {
+               vfprintf(stderr, fmt, ap);
+               fprintf(stderr, ": ");
+       }
+       fprintf(stderr, "%s\n", strerror(code));
+}
+
+
+void
+warn(const char * fmt, ...)
+{
+       va_list ap;
+       va_start(ap, fmt);
+       vwarnc(errno, fmt, ap);
+       va_end(ap);
+}
+
+
+void
+prt(char *fmt, ...)
+{
+       va_list args;
+
+       va_start(args, fmt);
+       vfprintf(stdout, fmt, args);
+       if (fsxlogf)
+               vfprintf(fsxlogf, fmt, args);
+       va_end(args);
+}
+
+void
+prterr(char *prefix)
+{
+       prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
+}
+
+
+void
+log4(int operation, int arg0, int arg1, int arg2)
+{
+       struct log_entry *le;
+
+       le = &oplog[logptr];
+       le->operation = operation;
+       if (closeopen)
+               le->operation = ~ le->operation;
+       le->args[0] = arg0;
+       le->args[1] = arg1;
+       le->args[2] = arg2;
+       logptr++;
+       logcount++;
+       if (logptr >= LOGSIZE)
+               logptr = 0;
+}
+
+
+void
+logdump(void)
+{
+       int     i, count, down;
+       struct log_entry        *lp;
+
+       prt("LOG DUMP (%d total operations):\n", logcount);
+       if (logcount < LOGSIZE) {
+               i = 0;
+               count = logcount;
+       } else {
+               i = logptr;
+               count = LOGSIZE;
+       }
+       for ( ; count > 0; count--) {
+               int opnum;
+
+               opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
+               prt("%d(%d mod 256): ", opnum, opnum%256);
+               lp = &oplog[i];
+               if ((closeopen = lp->operation < 0))
+                       lp->operation = ~ lp->operation;
+                       
+               switch (lp->operation) {
+               case OP_MAPREAD:
+                       prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
+                           lp->args[0], lp->args[0] + lp->args[1] - 1,
+                           lp->args[1]);
+                       if (badoff >= lp->args[0] && badoff <
+                                                    lp->args[0] + lp->args[1])
+                               prt("\t***RRRR***");
+                       break;
+               case OP_MAPWRITE:
+                       prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
+                           lp->args[0], lp->args[0] + lp->args[1] - 1,
+                           lp->args[1]);
+                       if (badoff >= lp->args[0] && badoff <
+                                                    lp->args[0] + lp->args[1])
+                               prt("\t******WWWW");
+                       break;
+               case OP_READ:
+                       prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
+                           lp->args[0], lp->args[0] + lp->args[1] - 1,
+                           lp->args[1]);
+                       if (badoff >= lp->args[0] &&
+                           badoff < lp->args[0] + lp->args[1])
+                               prt("\t***RRRR***");
+                       break;
+               case OP_WRITE:
+                       prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
+                           lp->args[0], lp->args[0] + lp->args[1] - 1,
+                           lp->args[1]);
+                       if (lp->args[0] > lp->args[2])
+                               prt(" HOLE");
+                       else if (lp->args[0] + lp->args[1] > lp->args[2])
+                               prt(" EXTEND");
+                       if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
+                           badoff < lp->args[0] + lp->args[1])
+                               prt("\t***WWWW");
+                       break;
+               case OP_TRUNCATE:
+                       down = lp->args[0] < lp->args[1];
+                       prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
+                           down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
+                       if (badoff >= lp->args[!down] &&
+                           badoff < lp->args[!!down])
+                               prt("\t******WWWW");
+                       break;
+               case OP_SKIPPED:
+                       prt("SKIPPED (no operation)");
+                       break;
+               default:
+                       prt("BOGUS LOG ENTRY (operation code = %d)!",
+                           lp->operation);
+               }
+               if (closeopen)
+                       prt("\n\t\tCLOSE/OPEN");
+               prt("\n");
+               i++;
+               if (i == LOGSIZE)
+                       i = 0;
+       }
+}
+
+
+void
+save_buffer(char *buffer, off_t bufferlength, int fd)
+{
+       off_t ret;
+       ssize_t byteswritten;
+
+       if (fd <= 0 || bufferlength == 0)
+               return;
+
+       if (bufferlength > SSIZE_MAX) {
+               prt("fsx flaw: overflow in save_buffer\n");
+               exit(67);
+       }
+       if (lite) {
+               off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END);
+               if (size_by_seek == (off_t)-1)
+                       prterr("save_buffer: lseek eof");
+               else if (bufferlength > size_by_seek) {
+                       warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek,
+                            (unsigned long long)bufferlength);
+                       bufferlength = size_by_seek;
+               }
+       }
+
+       ret = lseek(fd, (off_t)0, SEEK_SET);
+       if (ret == (off_t)-1)
+               prterr("save_buffer: lseek 0");
+       
+       byteswritten = write(fd, buffer, (size_t)bufferlength);
+       if (byteswritten != bufferlength) {
+               if (byteswritten == -1)
+                       prterr("save_buffer write");
+               else
+                       warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n",
+                            (unsigned)byteswritten,
+                            (unsigned long long)bufferlength);
+       }
+}
+
+
+void
+report_failure(int status)
+{
+       logdump();
+       
+       if (fsxgoodfd) {
+               if (good_buf) {
+                       save_buffer(good_buf, file_size, fsxgoodfd);
+                       prt("Correct content saved for comparison\n");
+                       prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
+                           fname, fname);
+               }
+               close(fsxgoodfd);
+       }
+       exit(status);
+}
+
+
+#define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
+                                       *(((unsigned char *)(cp)) + 1)))
+
+void
+check_buffers(unsigned offset, unsigned size)
+{
+       unsigned char c, t;
+       unsigned i = 0;
+       unsigned n = 0;
+       unsigned op = 0;
+       unsigned bad = 0;
+
+       if (memcmp(good_buf + offset, temp_buf, size) != 0) {
+               prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
+                   offset, size);
+               prt("OFFSET\tGOOD\tBAD\tRANGE\n");
+               while (size > 0) {
+                       c = good_buf[offset];
+                       t = temp_buf[i];
+                       if (c != t) {
+                               if (n == 0) {
+                                       bad = short_at(&temp_buf[i]);
+                                       prt("0x%5x\t0x%04x\t0x%04x", offset,
+                                           short_at(&good_buf[offset]), bad);
+                                       op = temp_buf[offset & 1 ? i+1 : i];
+                               }
+                               n++;
+                               badoff = offset;
+                       }
+                       offset++;
+                       i++;
+                       size--;
+               }
+               if (n) {
+                       prt("\t0x%5x\n", n);
+                       if (bad)
+                               prt("operation# (mod 256) for the bad data may be %u\n", ((unsigned)op & 0xff));
+                       else
+                               prt("operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops\n");
+               } else
+                       prt("????????????????\n");
+               report_failure(110);
+       }
+}
+
+
+void
+check_size(void)
+{
+       struct stat     statbuf;
+       off_t   size_by_seek;
+
+       if (fstat(fd, &statbuf)) {
+               prterr("check_size: fstat");
+               statbuf.st_size = -1;
+       }
+       size_by_seek = lseek(fd, (off_t)0, SEEK_END);
+       if (file_size != statbuf.st_size || file_size != size_by_seek) {
+               prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
+                   (unsigned long long)file_size,
+                   (unsigned long long)statbuf.st_size,
+                   (unsigned long long)size_by_seek);
+               report_failure(120);
+       }
+}
+
+
+void
+check_trunc_hack(void)
+{
+       struct stat statbuf;
+
+       ftruncate(fd, (off_t)0);
+       ftruncate(fd, (off_t)100000);
+       fstat(fd, &statbuf);
+       if (statbuf.st_size != (off_t)100000) {
+               prt("no extend on truncate! not posix!\n");
+               exit(130);
+       }
+       ftruncate(fd, (off_t)0);
+}
+
+
+void
+doread(unsigned offset, unsigned size)
+{
+       off_t ret;
+       unsigned iret;
+
+       offset -= offset % readbdy;
+       if (size == 0) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping zero size read\n");
+               log4(OP_SKIPPED, OP_READ, offset, size);
+               return;
+       }
+       if (size + offset > file_size) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping seek/read past end of file\n");
+               log4(OP_SKIPPED, OP_READ, offset, size);
+               return;
+       }
+
+       log4(OP_READ, offset, size, 0);
+
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (!quiet && ((progressinterval &&
+                       testcalls % progressinterval == 0) ||
+                      (debug &&
+                       (monitorstart == -1 ||
+                        (offset + size > monitorstart &&
+                         (monitorend == -1 || offset <= monitorend))))))
+               prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
+                   offset, offset + size - 1, size);
+       ret = lseek(fd, (off_t)offset, SEEK_SET);
+       if (ret == (off_t)-1) {
+               prterr("doread: lseek");
+               report_failure(140);
+       }
+       iret = read(fd, temp_buf, size);
+       if (iret != size) {
+               if (iret == -1)
+                       prterr("doread: read");
+               else
+                       prt("short read: 0x%x bytes instead of 0x%x\n",
+                           iret, size);
+               report_failure(141);
+       }
+       check_buffers(offset, size);
+}
+
+
+void
+check_eofpage(char *s, unsigned offset, char *p, int size)
+{
+       unsigned last_page, should_be_zero;
+
+       if (offset + size <= (file_size & ~page_mask))
+               return;
+       /*
+        * we landed in the last page of the file
+        * test to make sure the VM system provided 0's 
+        * beyond the true end of the file mapping
+        * (as required by mmap def in 1996 posix 1003.1)
+        */
+       last_page = ((int)p + (offset & page_mask) + size) & ~page_mask;
+
+       for (should_be_zero = last_page + (file_size & page_mask);
+            should_be_zero < last_page + page_size;
+            should_be_zero++)
+               if (*(char *)should_be_zero) {
+                       prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n",
+                           s, file_size - 1, should_be_zero & page_mask,
+                           short_at(should_be_zero));
+                       report_failure(205);
+               }
+}
+
+
+void
+domapread(unsigned offset, unsigned size)
+{
+       unsigned pg_offset;
+       unsigned map_size;
+       char    *p;
+
+       offset -= offset % readbdy;
+       if (size == 0) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping zero size read\n");
+               log4(OP_SKIPPED, OP_MAPREAD, offset, size);
+               return;
+       }
+       if (size + offset > file_size) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping seek/read past end of file\n");
+               log4(OP_SKIPPED, OP_MAPREAD, offset, size);
+               return;
+       }
+
+       log4(OP_MAPREAD, offset, size, 0);
+
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (!quiet && ((progressinterval &&
+                       testcalls % progressinterval == 0) ||
+                      (debug &&
+                       (monitorstart == -1 ||
+                        (offset + size > monitorstart &&
+                         (monitorend == -1 || offset <= monitorend))))))
+               prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
+                   offset, offset + size - 1, size);
+
+       pg_offset = offset & page_mask;
+       map_size  = pg_offset + size;
+
+       if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd,
+                             (off_t)(offset - pg_offset))) == (char *)-1) {
+               prterr("domapread: mmap");
+               report_failure(190);
+       }
+       memcpy(temp_buf, p + pg_offset, size);
+
+       check_eofpage("Read", offset, p, size);
+
+       if (munmap(p, map_size) != 0) {
+               prterr("domapread: munmap");
+               report_failure(191);
+       }
+
+       check_buffers(offset, size);
+}
+
+
+void
+gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
+{
+       while (size--) {
+               good_buf[offset] = testcalls % 256; 
+               if (offset % 2)
+                       good_buf[offset] += original_buf[offset];
+               offset++;
+       }
+}
+
+
+void
+dowrite(unsigned offset, unsigned size)
+{
+       off_t ret;
+       unsigned iret;
+
+       offset -= offset % writebdy;
+       if (size == 0) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping zero size write\n");
+               log4(OP_SKIPPED, OP_WRITE, offset, size);
+               return;
+       }
+
+       log4(OP_WRITE, offset, size, file_size);
+
+       gendata(original_buf, good_buf, offset, size);
+       if (file_size < offset + size) {
+               if (file_size < offset)
+                       memset(good_buf + file_size, '\0', offset - file_size);
+               file_size = offset + size;
+               if (lite) {
+                       warn("Lite file size bug in fsx!");
+                       report_failure(149);
+               }
+       }
+
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (!quiet && ((progressinterval &&
+                       testcalls % progressinterval == 0) ||
+                      (debug &&
+                       (monitorstart == -1 ||
+                        (offset + size > monitorstart &&
+                         (monitorend == -1 || offset <= monitorend))))))
+               prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
+                   offset, offset + size - 1, size);
+       ret = lseek(fd, (off_t)offset, SEEK_SET);
+       if (ret == (off_t)-1) {
+               prterr("dowrite: lseek");
+               report_failure(150);
+       }
+       iret = write(fd, good_buf + offset, size);
+       if (iret != size) {
+               if (iret == -1)
+                       prterr("dowrite: write");
+               else
+                       prt("short write: 0x%x bytes instead of 0x%x\n",
+                           iret, size);
+               report_failure(151);
+       }
+}
+
+
+void
+domapwrite(unsigned offset, unsigned size)
+{
+       unsigned pg_offset;
+       unsigned map_size;
+       off_t    cur_filesize;
+       char    *p;
+
+       offset -= offset % writebdy;
+       if (size == 0) {
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("skipping zero size write\n");
+               log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
+               return;
+       }
+       cur_filesize = file_size;
+
+       log4(OP_MAPWRITE, offset, size, 0);
+
+       gendata(original_buf, good_buf, offset, size);
+       if (file_size < offset + size) {
+               if (file_size < offset)
+                       memset(good_buf + file_size, '\0', offset - file_size);
+               file_size = offset + size;
+               if (lite) {
+                       warn("Lite file size bug in fsx!");
+                       report_failure(200);
+               }
+       }
+
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (!quiet && ((progressinterval &&
+                       testcalls % progressinterval == 0) ||
+                      (debug &&
+                       (monitorstart == -1 ||
+                        (offset + size > monitorstart &&
+                         (monitorend == -1 || offset <= monitorend))))))
+               prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
+                   offset, offset + size - 1, size);
+
+       if (file_size > cur_filesize) {
+               if (ftruncate(fd, file_size) == -1) {
+                       prterr("domapwrite: ftruncate");
+                       exit(201);
+               }
+       }
+       pg_offset = offset & page_mask;
+       map_size  = pg_offset + size;
+
+       if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
+                             MAP_FILE | MAP_SHARED, fd,
+                             (off_t)(offset - pg_offset))) == (char *)-1) {
+               prterr("domapwrite: mmap");
+               report_failure(202);
+       }
+       memcpy(p + pg_offset, good_buf + offset, size);
+       if (msync(p, map_size, 0) != 0) {
+               prterr("domapwrite: msync");
+               report_failure(203);
+       }
+
+       check_eofpage("Write", offset, p, size);
+
+       if (munmap(p, map_size) != 0) {
+               prterr("domapwrite: munmap");
+               report_failure(204);
+       }
+}
+
+
+void
+dotruncate(unsigned size)
+{
+       int oldsize = file_size;
+
+       size -= size % truncbdy;
+       if (size > biggest) {
+               biggest = size;
+               if (!quiet && testcalls > simulatedopcount)
+                       prt("truncating to largest ever: 0x%x\n", size);
+       }
+
+       log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
+
+       if (size > file_size)
+               memset(good_buf + file_size, '\0', size - file_size);
+       file_size = size;
+
+       if (testcalls <= simulatedopcount)
+               return;
+       
+       if ((progressinterval && testcalls % progressinterval == 0) ||
+           (debug && (monitorstart == -1 || monitorend == -1 ||
+                      size <= monitorend)))
+               prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
+       if (ftruncate(fd, (off_t)size) == -1) {
+               prt("ftruncate1: %x\n", size);
+               prterr("dotruncate: ftruncate");
+               report_failure(160);
+       }
+}
+
+
+void
+writefileimage()
+{
+       ssize_t iret;
+
+       if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
+               prterr("writefileimage: lseek");
+               report_failure(171);
+       }
+       iret = write(fd, good_buf, file_size);
+       if ((off_t)iret != file_size) {
+               if (iret == -1)
+                       prterr("writefileimage: write");
+               else
+                       prt("short write: 0x%x bytes instead of 0x%llx\n",
+                           iret, (unsigned long long)file_size);
+               report_failure(172);
+       }
+       if (lite ? 0 : ftruncate(fd, file_size) == -1) {
+               prt("ftruncate2: %llx\n", (unsigned long long)file_size);
+               prterr("writefileimage: ftruncate");
+               report_failure(173);
+       }
+}
+
+
+void
+docloseopen(void)
+{ 
+       if (testcalls <= simulatedopcount)
+               return;
+
+       if (debug)
+               prt("%lu close/open\n", testcalls);
+       if (close(fd)) {
+               prterr("docloseopen: close");
+               report_failure(180);
+       }
+       fd = open(fname, O_RDWR, 0);
+       if (fd < 0) {
+               prterr("docloseopen: open");
+               report_failure(181);
+       }
+}
+
+
+void
+test(void)
+{
+       unsigned long   offset;
+       unsigned long   size = maxoplen;
+       unsigned long   rv = random();
+       unsigned long   op = rv % (3 + !lite + mapped_writes);
+
+       /* turn off the map read if necessary */
+
+       if (op == 2 && !mapped_reads)
+           op = 0;
+
+       if (simulatedopcount > 0 && testcalls == simulatedopcount)
+               writefileimage();
+
+       testcalls++;
+
+       if (closeprob)
+               closeopen = (rv >> 3) < (1 << 28) / closeprob;
+
+       if (debugstart > 0 && testcalls >= debugstart)
+               debug = 1;
+
+       if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
+               prt("%lu...\n", testcalls);
+
+       /*
+        * READ:        op = 0
+        * WRITE:       op = 1
+        * MAPREAD:     op = 2
+        * TRUNCATE:    op = 3
+        * MAPWRITE:    op = 3 or 4
+        */
+       if (lite ? 0 : op == 3 && style == 0) /* vanilla truncate? */
+               dotruncate(random() % maxfilelen);
+       else {
+               if (randomoplen)
+                       size = random() % (maxoplen+1);
+               if (lite ? 0 : op == 3)
+                       dotruncate(size);
+               else {
+                       offset = random();
+                       if (op == 1 || op == (lite ? 3 : 4)) {
+                               offset %= maxfilelen;
+                               if (offset + size > maxfilelen)
+                                       size = maxfilelen - offset;
+                               if (op != 1)
+                                       domapwrite(offset, size);
+                               else
+                                       dowrite(offset, size);
+                       } else {
+                               if (file_size)
+                                       offset %= file_size;
+                               else
+                                       offset = 0;
+                               if (offset + size > file_size)
+                                       size = file_size - offset;
+                               if (op != 0)
+                                       domapread(offset, size);
+                               else
+                                       doread(offset, size);
+                       }
+               }
+       }
+       if (sizechecks && testcalls > simulatedopcount)
+               check_size();
+       if (closeopen)
+               docloseopen();
+}
+
+
+void
+cleanup(sig)
+       int     sig;
+{
+       if (sig)
+               prt("signal %d\n", sig);
+       prt("testcalls = %lu\n", testcalls);
+       exit(sig);
+}
+
+
+void
+usage(void)
+{
+       fprintf(stdout, "usage: %s",
+               "fsx [-dnqLOW] [-b opnum] [-c Prob] [-l flen] [-m start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] fname\n\
+       -b opnum: beginning operation number (default 1)\n\
+       -c P: 1 in P chance of file close+open at each op (default infinity)\n\
+       -d: debug output for all operations\n\
+       -l flen: the upper bound on file size (default 262144)\n\
+       -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
+       -n: no verifications of file size\n\
+       -o oplen: the upper bound on operation size (default 65536)\n\
+       -p progressinterval: debug output at specified operation interval\n\
+       -q: quieter operation\n\
+       -r readbdy: 4096 would make reads page aligned (default 1)\n\
+       -s style: 1 gives smaller truncates (default 0)\n\
+       -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
+       -w writebdy: 4096 would make writes page aligned (default 1)\n\
+       -D startingop: debug output starting at specified operation\n\
+       -L: fsxLite - no file creations & no file size changes\n\
+       -N numops: total # operations to do (default infinity)\n\
+       -O: use oplen (see -o flag) for every op (default random)\n\
+       -P dirpath: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
+       -S seed: for random # generator (default 1) 0 gets timestamp\n\
+       -W: mapped write operations DISabled\n\
+       -R: mapped read operations DISabled)\n\
+       fname: this filename is REQUIRED (no default)\n");
+       exit(90);
+}
+
+
+int
+getnum(char *s, char **e)
+{
+       int ret = -1;
+
+       *e = (char *) 0;
+       ret = strtol(s, e, 0);
+       if (*e)
+               switch (**e) {
+               case 'b':
+               case 'B':
+                       ret *= 512;
+                       *e = *e + 1;
+                       break;
+               case 'k':
+               case 'K':
+                       ret *= 1024;
+                       *e = *e + 1;
+                       break;
+               case 'm':
+               case 'M':
+                       ret *= 1024*1024;
+                       *e = *e + 1;
+                       break;
+               case 'w':
+               case 'W':
+                       ret *= 4;
+                       *e = *e + 1;
+                       break;
+               }
+       return (ret);
+}
+
+
+int
+main(int argc, char **argv)
+{
+       int     i, ch;
+       char    *endp;
+       char goodfile[1024];
+       char logfile[1024];
+
+       goodfile[0] = 0;
+       logfile[0] = 0;
+
+       page_size = getpagesize();
+       page_mask = page_size - 1;
+
+       setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
+
+       while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:D:LN:OP:RS:W"))
+              != EOF)
+               switch (ch) {
+               case 'b':
+                       simulatedopcount = getnum(optarg, &endp);
+                       if (!quiet)
+                               fprintf(stdout, "Will begin at operation %ld\n",
+                                       simulatedopcount);
+                       if (simulatedopcount == 0)
+                               usage();
+                       simulatedopcount -= 1;
+                       break;
+               case 'c':
+                       closeprob = getnum(optarg, &endp);
+                       if (!quiet)
+                               fprintf(stdout,
+                                       "Chance of close/open is 1 in %d\n",
+                                       closeprob);
+                       if (closeprob <= 0)
+                               usage();
+                       break;
+               case 'd':
+                       debug = 1;
+                       break;
+               case 'l':
+                       maxfilelen = getnum(optarg, &endp);
+                       if (maxfilelen <= 0)
+                               usage();
+                       break;
+               case 'm':
+                       monitorstart = getnum(optarg, &endp);
+                       if (monitorstart < 0)
+                               usage();
+                       if (!endp || *endp++ != ':')
+                               usage();
+                       monitorend = getnum(endp, &endp);
+                       if (monitorend < 0)
+                               usage();
+                       if (monitorend == 0)
+                               monitorend = -1; /* aka infinity */
+                       debug = 1;
+               case 'n':
+                       sizechecks = 0;
+                       break;
+               case 'o':
+                       maxoplen = getnum(optarg, &endp);
+                       if (maxoplen <= 0)
+                               usage();
+                       break;
+               case 'p':
+                       progressinterval = getnum(optarg, &endp);
+                       if (progressinterval < 0)
+                               usage();
+                       break;
+               case 'q':
+                       quiet = 1;
+                       break;
+               case 'r':
+                       readbdy = getnum(optarg, &endp);
+                       if (readbdy <= 0)
+                               usage();
+                       break;
+               case 's':
+                       style = getnum(optarg, &endp);
+                       if (style < 0 || style > 1)
+                               usage();
+                       break;
+               case 't':
+                       truncbdy = getnum(optarg, &endp);
+                       if (truncbdy <= 0)
+                               usage();
+                       break;
+               case 'w':
+                       writebdy = getnum(optarg, &endp);
+                       if (writebdy <= 0)
+                               usage();
+                       break;
+               case 'D':
+                       debugstart = getnum(optarg, &endp);
+                       if (debugstart < 1)
+                               usage();
+                       break;
+               case 'L':
+                       lite = 1;
+                       break;
+               case 'N':
+                       numops = getnum(optarg, &endp);
+                       if (numops < 0)
+                               usage();
+                       break;
+               case 'O':
+                       randomoplen = 0;
+                       break;
+               case 'P':
+                       strncpy(goodfile, optarg, sizeof(goodfile));
+                       strcat(goodfile, "/");
+                       strncpy(logfile, optarg, sizeof(logfile));
+                       strcat(logfile, "/");
+                       break;
+               case 'R':
+                       mapped_reads = 0;
+                       break;
+               case 'S':
+                       seed = getnum(optarg, &endp);
+                       if (seed == 0)
+                               seed = time(0) % 10000;
+                       if (!quiet)
+                               fprintf(stdout, "Seed set to %d\n", seed);
+                       if (seed < 0)
+                               usage();
+                       break;
+               case 'W':
+                       mapped_writes = 0;
+                       if (!quiet)
+                               fprintf(stdout, "mapped writes DISABLED\n");
+                       break;
+
+               default:
+                       usage();
+                       /* NOTREACHED */
+               }
+       argc -= optind;
+       argv += optind;
+       if (argc != 1)
+               usage();
+       fname = argv[0];
+
+       signal(SIGHUP,  cleanup);
+       signal(SIGINT,  cleanup);
+       signal(SIGPIPE, cleanup);
+       signal(SIGALRM, cleanup);
+       signal(SIGTERM, cleanup);
+       signal(SIGXCPU, cleanup);
+       signal(SIGXFSZ, cleanup);
+       signal(SIGVTALRM,       cleanup);
+       signal(SIGUSR1, cleanup);
+       signal(SIGUSR2, cleanup);
+
+       initstate(seed, state, 256);
+       setstate(state);
+       fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666);
+       if (fd < 0) {
+               prterr(fname);
+               exit(91);
+       }
+       strncat(goodfile, fname, 256);
+       strcat (goodfile, ".fsxgood");
+       fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
+       if (fsxgoodfd < 0) {
+               prterr(goodfile);
+               exit(92);
+       }
+       strncat(logfile, fname, 256);
+       strcat (logfile, ".fsxlog");
+       fsxlogf = fopen(logfile, "w");
+       if (fsxlogf == NULL) {
+               prterr(logfile);
+               exit(93);
+       }
+       if (lite) {
+               off_t ret;
+               file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
+               if (file_size == (off_t)-1) {
+                       prterr(fname);
+                       warn("main: lseek eof");
+                       exit(94);
+               }
+               ret = lseek(fd, (off_t)0, SEEK_SET);
+               if (ret == (off_t)-1) {
+                       prterr(fname);
+                       warn("main: lseek 0");
+                       exit(95);
+               }
+       }
+       original_buf = (char *) malloc(maxfilelen);
+       for (i = 0; i < maxfilelen; i++)
+               original_buf[i] = random() % 256;
+       good_buf = (char *) malloc(maxfilelen);
+       memset(good_buf, '\0', maxfilelen);
+       temp_buf = (char *) malloc(maxoplen);
+       memset(temp_buf, '\0', maxoplen);
+       if (lite) {     /* zero entire existing file */
+               ssize_t written;
+
+               written = write(fd, good_buf, (size_t)maxfilelen);
+               if (written != maxfilelen) {
+                       if (written == -1) {
+                               prterr(fname);
+                               warn("main: error on write");
+                       } else
+                               warn("main: short write, 0x%x bytes instead of 0x%x\n",
+                                    (unsigned)written, maxfilelen);
+                       exit(98);
+               }
+       } else 
+               check_trunc_hack();
+
+       while (numops == -1 || numops--)
+               test();
+
+       if (close(fd)) {
+               prterr("close");
+               report_failure(99);
+       }
+       prt("All operations completed A-OK!\n");
+
+       exit(0);
+       return 0;
+}
+