--- zip-2.31/unix/zipup.h.4GB	2005-01-29 07:47:58.000000000 +0100
+++ zip-2.31/unix/zipup.h	2005-11-10 13:18:02.990593904 +0100
@@ -6,13 +6,19 @@
   If, for some reason, both of these files are missing, the Info-ZIP license
   also may be found at:  ftp://ftp.info-zip.org/pub/infozip/license.html
 */
+#include <features.h>
+#include <fcntl.h>
 #ifndef O_RDONLY
 #  define O_RDONLY 0
 #endif
 #ifndef O_BINARY
 #  define O_BINARY 0
 #endif
-#define fhow (O_RDONLY|O_BINARY)
+#ifdef _LARGEFILE64_SOURCE
+#define fhow (O_RDONLY | O_LARGEFILE)
+#else
+#define fhow O_RDONLY
+#endif
 #define fbad (-1)
 typedef int ftype;
 #define zopen(n,p) open(n,p)
--- zip-2.31/unix/unix.c.4GB	2005-02-11 03:35:02.000000000 +0100
+++ zip-2.31/unix/unix.c	2005-11-10 13:24:19.573344624 +0100
@@ -113,7 +113,11 @@
   char *e;              /* pointer to name from readd() */
   int m;                /* matched flag */
   char *p;              /* path for recursion */
+#ifdef _LARGEFILE64_SOURCE
+  struct stat64 s;      /* result of stat() */
+#else
   struct stat s;        /* result of stat() */
+#endif
   struct zlist far *z;  /* steps through zfiles list */
 
   if (strcmp(n, "-") == 0)   /* if compressing stdin */
@@ -202,6 +206,15 @@
   } /* (s.st_mode & S_IFDIR) */
   else
     zipwarn("ignoring special file: ", n);
+
+  /* Zip uses negative error codes (IIRC, to -3).  Make sure file size
+     doesn't collide with error values.  2^32 - 8193 should be plenty until
+     info-zip supports zip64. */
+  if (s.st_size > MAX_ZIP_SIZE) {
+    zipwarn("file too large: ", a);
+    return ZE_MISS;
+  }
+
   return ZE_OK;
 }
 
@@ -321,7 +334,12 @@
    If f is "-", use standard input as the file. If f is a device, return
    a file size of -1 */
 {
-  struct stat s;        /* results of stat() */
+#ifdef _LARGEFILE64_SOURCE
+  struct stat64 s;        /* results of stat() */
+#else
+  struct stat s;
+#endif
+
   /* converted to pointer from using FNMAX - 11/8/04 EG */
   char *name;
   int len = strlen(f);
@@ -343,7 +361,11 @@
     name[len - 1] = '\0';
   /* not all systems allow stat'ing a file with / appended */
   if (strcmp(f, "-") == 0) {
+#ifdef _LARGEFILE64_SOURCE
+    if (fstat64(fileno(stdin), &s) != 0) {
+#else
     if (fstat(fileno(stdin), &s) != 0) {
+#endif
       free(name);
       error("fstat(stdin)");
     }
@@ -422,7 +444,11 @@
   /* store full data in local header but just modification time stamp info
      in central header */
 {
+#ifdef _LARGEFILE64_SOURCE
+  struct stat64 s;
+#else
   struct stat s;
+#endif
   char *name;
   int len = strlen(z->name);
 
--- zip-2.31/unix/configure.4GB	2004-12-05 09:51:18.000000000 +0100
+++ zip-2.31/unix/configure	2005-11-10 13:12:47.010630160 +0100
@@ -12,7 +12,7 @@
 trap "rm -f conftest* core a.out; exit 1" 1 2 3 15
 
 CC=${1-cc}
-CFLAGS=${2-"-O2 -I. -DUNIX"}
+CFLAGS=${2-"-O2 -I. -DUNIX -g -D_LARGEFILE64_SOURCE"}
 LFLAGS1=""
 LN="ln -s"
 
--- zip-2.31/fileio.c.4GB	2005-11-10 12:59:43.000000000 +0100
+++ zip-2.31/fileio.c	2005-11-10 13:07:13.190378552 +0100
@@ -599,7 +599,11 @@
    this will be done by setfileattr() later.
  */
 {
+#ifdef _LARGEFILE64_SOURCE
+  struct stat64 t;        /* results of stat64() */
+#else
   struct stat t;        /* results of stat() */
+#endif
 #if defined(CMS_MVS)
   /* cmsmvs.h defines FOPW_TEMP as memory(hiperspace).  Since memory is
    * lost at end of run, always do copy instead of rename.
@@ -698,8 +702,11 @@
 
   return _dos_files(&buf, f, 0xff) < 0 ? 0x20 : buf.atr;
 #else
+#ifdef _LARGEFILE64_SOURCE
+  struct stat64 s;
+#else  
   struct stat s;
-
+#endif
   return SSTAT(f, &s) == 0 ? (int) s.st_mode : 0;
 #endif
 }
@@ -920,3 +927,108 @@
 }
 
 #endif /* NO_RENAME */
+
+/*
+   Wrapper functions for fopen/fseek/ftell for >2GB files.
+
+   So, what we do here is add support for 4GB seeks.  More appropriately,
+   2^32 - 8193 bytes.  This is tailored to the way zip uses fseek; it never
+   seeks backwards more than 8192 bytes.
+ */
+#ifdef _LARGEFILE64_SOURCE
+FILE *
+lfopen(const char *path, const char *mode)
+{
+  int fd;
+  FILE *f;
+  int flags;
+  int x;
+  char prev;
+
+  if (!path || !mode | !strlen(mode))
+    return NULL;
+
+  for (x = 0; x < strlen(mode); x++) {
+    switch (mode[x]) {
+    case 'r':
+      flags = O_RDONLY | O_LARGEFILE;
+      break;
+    case 'w':
+      flags = O_WRONLY | O_LARGEFILE | O_CREAT | O_TRUNC;
+      break;
+    case 'a':
+      flags = O_RDWR | O_LARGEFILE;
+      break;
+    case 'b': /* b has no effect */
+      continue;
+    case '+':
+      if (prev == 'r') {
+        flags = O_RDWR | O_LARGEFILE;
+      } else if (prev == 'w') {
+        flags = O_RDWR | O_LARGEFILE | O_CREAT |
+          O_TRUNC;
+      } else if (prev == 'a') {
+        flags = O_RDWR | O_LARGEFILE | O_CREAT;
+      } else
+        return NULL;
+      break;
+    }
+    prev = mode[x];
+  }
+  
+  fd = open(path, flags, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+  if (fd == -1)
+    return NULL;
+
+  f = fdopen(fd, mode);
+  return f;
+}
+
+int
+lfseek(FILE *f, ulg pos, int whence)
+{
+  struct stat64 sb;
+  ulg o, delta;
+  int ret;
+
+  /* Hurts performance */
+  fflush(f);
+
+  if (pos <= MAX_ZIP_SIZE) {
+    return (lseek64(fileno(f), pos, whence) == (off64_t)-1);
+  }
+
+  delta = ~((off64_t)pos - 1);
+  if (whence == SEEK_CUR) {
+    o = lseek64(fileno(f), 0, SEEK_CUR);
+    if (o < delta)
+      return -1;
+
+    o -= delta;
+    return (lseek64(fileno(f), o, SEEK_SET) == (off64_t)-1);
+  }
+
+  if (whence == SEEK_END) {
+    fstat64(fileno(f), &sb);
+
+    if ((ulg)sb.st_size < delta)
+      return -1;
+
+    o = (off64_t)((sb.st_size) - delta);
+    return (lseek64(fileno(f), o, SEEK_SET) == (off64_t)-1);
+  }
+
+  return -1;
+}
+
+
+ulg
+lftell(FILE *f)
+{
+  /* Hurts performance */
+  fflush(f);
+  return (ulg)lseek64(fileno(f), 0, SEEK_CUR);
+}
+
+#endif /* _LARGEFILE64_SOURCE */
+
--- zip-2.31/zip.h.4GB	2005-11-10 12:59:43.000000000 +0100
+++ zip-2.31/zip.h	2005-11-10 13:18:57.653283912 +0100
@@ -236,6 +236,7 @@
 #define DOSTIME_MINIMUM         ((ulg)0x00210000L)
 #define DOSTIME_2038_01_18      ((ulg)0x74320000L)
 
+#define MAX_ZIP_SIZE 0xffffdffe /* Max archive / archive member size */
 
 /* Public globals */
 extern uch upper[256];          /* Country dependent case map table */
@@ -411,6 +412,11 @@
 int putcentral OF((struct zlist far *, FILE *));
 int putend OF((int, ulg, ulg, extent, char *, FILE *));
 int zipcopy OF((struct zlist far *, FILE *, FILE *));
+#ifdef _LARGEFILE64_SOURCE
+int lfseek OF((FILE *, ulg, int));
+ulg lftell OF((FILE *));
+FILE *lfopen OF((const char *, const char *));
+#endif /* LF64 */
 
         /* in fileio.c */
 #ifndef UTIL
--- zip-2.31/tailor.h.4GB	2005-03-04 08:45:26.000000000 +0100
+++ zip-2.31/tailor.h	2005-11-10 13:11:18.909023640 +0100
@@ -368,12 +368,27 @@
 #   define DYN_ALLOC
 #endif
 
+#ifdef _LARGEFILE64_SOURCE
+#define fopen lfopen
+#define fseek lfseek
+#define ftell lftell
+#endif /* LF64 */
+
 #ifndef SSTAT
-#  define SSTAT      stat
+#  ifdef _LARGEFILE64_SOURCE
+#    define SSTAT      stat64
+#  else
+#    define SSTAT      stat
+#  endif /* LF64 */
 #endif
 #ifdef S_IFLNK
-#  define LSTAT      lstat
-#  define LSSTAT(n, s)  (linkput ? lstat((n), (s)) : SSTAT((n), (s)))
+#  ifdef _LARGEFILE64_SOURCE
+#    define LSTAT      lstat64
+#    define LSSTAT(n, s)  (linkput ? lstat64((n), (s)) : SSTAT((n), (s)))
+#  else
+#    define LSTAT      lstat64
+#    define LSSTAT(n, s)  (linkput ? lstat64((n), (s)) : SSTAT((n), (s)))
+#  endif /* LF64 */
 #else
 #  define LSTAT      SSTAT
 #  define LSSTAT     SSTAT