diff --git a/libs/host/CopyFile.c b/libs/host/CopyFile.c
new file mode 100644
index 0000000..a822b41
--- /dev/null
+++ b/libs/host/CopyFile.c
@@ -0,0 +1,626 @@
+/*
+ * Copyright 2005 The Android Open Source Project
+ *
+ * Android "cp" replacement.
+ *
+ * The GNU/Linux "cp" uses O_LARGEFILE in its open() calls, utimes() instead
+ * of utime(), and getxattr()/setxattr() instead of chmod().  These are
+ * probably "better", but are non-portable, and not necessary for our
+ * purposes.
+ */
+#include <host/CopyFile.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <getopt.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <utime.h>
+#include <limits.h>
+#include <errno.h>
+#include <assert.h>
+
+#ifdef HAVE_MS_C_RUNTIME
+#  define  mkdir(path,mode)   _mkdir(path)
+#endif
+
+#ifndef HAVE_SYMLINKS
+#  define  lstat              stat
+#  ifndef EACCESS   /* seems to be missing from the Mingw headers */
+#    define  EACCESS            13
+#  endif
+#endif
+
+#ifndef O_BINARY
+#  define  O_BINARY  0
+#endif
+
+/*#define DEBUG_MSGS*/
+#ifdef DEBUG_MSGS
+# define DBUG(x) printf x
+#else
+# define DBUG(x) ((void)0)
+#endif
+
+#define FSSEP '/'       /* filename separator char */
+
+static int copyFileRecursive(const char* src, const char* dst, bool isCmdLine, unsigned int options);
+
+/*
+ * Returns true if the source file is newer than the destination file.
+ *
+ * The check is based on the modification date, whole seconds only.  This
+ * also returns true if the file sizes don't match.
+ */
+static bool isSourceNewer(const struct stat* pSrcStat, const struct stat* pDstStat)
+{
+    return (pSrcStat->st_mtime > pDstStat->st_mtime) ||
+           (pSrcStat->st_size != pDstStat->st_size);
+}
+
+/*
+ * Returns true if the source and destination files are actually the
+ * same thing.  We detect this by checking the inode numbers, which seems
+ * to work on Cygwin.
+ */
+static bool isSameFile(const struct stat* pSrcStat, const struct stat* pDstStat)
+{
+#ifndef HAVE_VALID_STAT_ST_INO
+    /* with MSVCRT.DLL, stat always sets st_ino to 0, and there is no simple way to */
+	/* get the equivalent information with Win32 (Cygwin does some weird stuff in   */
+	/* its winsup/cygwin/fhandler_disk_file.cc to emulate this, too complex for us) */
+	return 0;
+#else
+    return (pSrcStat->st_ino == pDstStat->st_ino);
+#endif
+}
+
+static void printCopyMsg(const char* src, const char* dst, unsigned int options)
+{
+    if ((options & COPY_VERBOSE_MASK) > 0)
+        printf("    '%s' --> '%s'\n", src, dst);
+}
+
+static void printNotNewerMsg(const char* src, const char* dst, unsigned int options)
+{
+    if ((options & COPY_VERBOSE_MASK) > 1)
+        printf("    '%s' is up-to-date\n", dst);
+}
+
+/*
+ * Copy the contents of one file to another.
+ *
+ * The files are assumed to be seeked to the start.
+ */
+static int copyFileContents(const char* dst, int dstFd, const char* src, int srcFd)
+{
+    unsigned char buf[8192];
+    ssize_t readCount, writeCount;
+
+    /*
+     * Read a chunk, write it, and repeat.
+     */
+    while (1) {
+        readCount = read(srcFd, buf, sizeof(buf));
+        if (readCount < 0) {
+            fprintf(stderr,
+                "acp: failed reading '%s': %s\n", src, strerror(errno));
+            return -1;
+        }
+
+        if (readCount > 0) {
+            writeCount = write(dstFd, buf, readCount);
+            if (writeCount < 0) {
+                fprintf(stderr,
+                    "acp: failed writing '%s': %s\n", dst, strerror(errno));
+                return -1;
+            }
+            if (writeCount != readCount) {
+                fprintf(stderr, "acp: partial write to '%s' (%d of %d)\n",
+                    dst, writeCount, readCount);
+                return -1;
+            }
+        }
+
+        if (readCount < (ssize_t) sizeof(buf))
+            break;
+    }
+
+    return 0;
+}
+
+/*
+ * Set the permissions, owner, and timestamps on the destination file
+ * equal to those of the source file.
+ *
+ * Failures here are "soft"; they don't produce warning messages and don't
+ * cause the cp command to report a failure.
+ */
+static int setPermissions(const char* dst, const struct stat* pSrcStat, unsigned int options)
+{
+    struct utimbuf ut;
+
+    if (options & COPY_TIMESTAMPS) {
+        /*
+         * Start with timestamps.  The access and mod dates are not affected
+         * by the next operations.
+         */
+        ut.actime = pSrcStat->st_atime;
+        ut.modtime = pSrcStat->st_mtime;
+        if (utime(dst, &ut) != 0) {
+            DBUG(("---   unable to set timestamps on '%s': %s\n",
+                dst, strerror(errno)));
+        }
+    }
+
+    if (options & COPY_PERMISSIONS) {
+        /*
+         * Set the permissions.
+         */
+        if (chmod(dst, pSrcStat->st_mode & ~(S_IFMT)) != 0) {
+            DBUG(("---   unable to set perms on '%s' to 0%o: %s\n",
+                dst, pSrcStat->st_mode & ~(S_IFMT), strerror(errno)));
+        }
+#ifndef HAVE_MS_C_RUNTIME
+        /*
+         * Set the owner.
+         */
+        if (chown(dst, pSrcStat->st_uid, pSrcStat->st_gid) != 0) {
+            DBUG(("---   unable to set owner of '%s' to %d/%d: %s\n",
+                dst, pSrcStat->st_uid, pSrcStat->st_gid, strerror(errno)));
+        }
+#endif
+    }
+
+    return 0;
+}
+
+/*
+ * Copy a regular file.  If the destination file exists and is not a
+ * regular file, we fail.  However, we use stat() rather than lstat(),
+ * because it's okay to write through a symlink (the noDereference stuff
+ * only applies to the source file).
+ *
+ * If the file doesn't exist, create it.  If it does exist, truncate it.
+ */
+static int copyRegular(const char* src, const char* dst, const struct stat* pSrcStat, unsigned int options)
+{
+    struct stat dstStat;
+    int srcFd, dstFd, statResult, copyResult;
+
+    DBUG(("--- copying regular '%s' to '%s'\n", src, dst));
+
+    statResult = stat(dst, &dstStat);
+    if (statResult == 0 && !S_ISREG(dstStat.st_mode)) {
+        fprintf(stderr,
+            "acp: destination '%s' exists and is not regular file\n",
+            dst);
+        return -1;
+    } else if (statResult != 0 && errno != ENOENT) {
+        fprintf(stderr, "acp: unable to stat destination '%s'\n", dst);
+        return -1;
+    }
+
+    if (statResult == 0) {
+        if (isSameFile(pSrcStat, &dstStat)) {
+            fprintf(stderr, "acp: '%s' and '%s' are the same file\n",
+                src, dst);
+            return -1;
+        }
+        if (options & COPY_UPDATE_ONLY) {
+            if (!isSourceNewer(pSrcStat, &dstStat)) {
+                DBUG(("---  source is not newer: '%s'\n", src));
+                printNotNewerMsg(src, dst, options);
+                return 0;
+            }
+        }
+    }
+
+    /* open src */
+    srcFd = open(src, O_RDONLY | O_BINARY, 0);
+    if (srcFd < 0) {
+        fprintf(stderr, "acp: unable to open '%s': %s\n", src, strerror(errno));
+        return -1;
+    }
+
+    /* open dest with O_CREAT | O_TRUNC */
+    DBUG(("---  opening '%s'\n", dst));
+    dstFd = open(dst, O_CREAT | O_TRUNC | O_WRONLY | O_BINARY, 0644);
+
+    if (dstFd < 0) {
+        if (errno == ENOENT) {
+            /* this happens if the target directory doesn't exist */
+            fprintf(stderr,
+                "acp: cannot create '%s': %s\n", dst, strerror(errno));
+            (void) close(srcFd);
+            return -1;
+        }
+
+        /* if "force" is set, try removing the destination file and retry */
+        if (options & COPY_FORCE) {
+            if (unlink(dst) != 0) {
+#ifdef HAVE_MS_C_RUNTIME
+				/* MSVCRT.DLL unlink will fail with EACCESS if the file is set read-only */
+				/* so try to change its mode, and unlink again                           */
+				if (errno == EACCESS) {
+					if (chmod(dst, S_IWRITE|S_IREAD) == 0 && unlink(dst) == 0)
+						goto Open_File;
+				}
+#endif		
+                fprintf(stderr, "acp: unable to remove '%s': %s\n",
+                    dst, strerror(errno));
+                (void) close(srcFd);
+                return -1;
+            }
+#ifdef HAVE_MS_C_RUNTIME
+        Open_File:
+#endif			
+            dstFd = open(dst, O_CREAT | O_TRUNC | O_WRONLY | O_BINARY, 0644);
+        }
+    }
+    if (dstFd < 0) {
+        fprintf(stderr, "acp: unable to open '%s': %s\n",
+            dst, strerror(errno));
+        (void) close(srcFd);
+        return -1;
+    }
+
+    copyResult = copyFileContents(dst, dstFd, src, srcFd);
+
+    (void) close(srcFd);
+    (void) close(dstFd);
+    if (copyResult != 0)
+        return -1;
+
+#ifdef MACOSX_RSRC
+    {
+        char* srcRsrcName = NULL;
+        char* dstRsrcName = NULL;
+        struct stat rsrcStat;
+
+        srcRsrcName = malloc(strlen(src) + 5 + 1);
+        strcpy(srcRsrcName, src);
+        strcat(srcRsrcName, "/rsrc");
+
+        dstRsrcName = malloc(strlen(dst) + 5 + 1);
+        strcpy(dstRsrcName, dst);
+        strcat(dstRsrcName, "/rsrc");
+
+        if (stat(srcRsrcName, &rsrcStat) == 0 && rsrcStat.st_size > 0) {
+            DBUG(("---  RSRC: %s --> %s\n", srcRsrcName, dstRsrcName));
+
+            srcFd = open(srcRsrcName, O_RDONLY);
+            dstFd = open(dstRsrcName, O_TRUNC | O_WRONLY, 0);
+            copyResult = -1;
+            if (srcFd >= 0 && dstFd >= 0) {
+                copyResult = copyFileContents(dstRsrcName, dstFd,
+                    srcRsrcName, srcFd);
+                (void) close(srcFd);
+                (void) close(dstFd);
+            }
+
+            if (copyResult != 0)
+                return -1;
+        }
+
+        free(srcRsrcName);
+        free(dstRsrcName);
+    }
+#endif
+
+    setPermissions(dst, pSrcStat, options);
+
+    printCopyMsg(src, dst, options);
+
+    return 0;
+}
+
+
+#ifdef HAVE_SYMLINKS
+/*
+ * Copy a symlink.  This only happens if we're in "no derefence" mode,
+ * in which we copy the links rather than the files that are pointed at.
+ *
+ * We always discard the destination file.  If it's a symlink already,
+ * we want to throw it out and replace it.  If it's not a symlink, we
+ * need to trash it so we can create one.
+ */
+static int copySymlink(const char* src, const char* dst, const struct stat* pSrcStat, unsigned int options)
+{
+    struct stat dstStat;
+    char linkBuf[PATH_MAX+1];
+    int statResult, nameLen;
+
+    assert(options & COPY_NO_DEREFERENCE);
+    DBUG(("--- copying symlink '%s' to '%s'\n", src, dst));
+
+    /* NOTE: we use lstat() here */
+    statResult = lstat(dst, &dstStat);
+    if (statResult == 0 && !S_ISREG(dstStat.st_mode)
+                         && !S_ISLNK(dstStat.st_mode)
+						 )
+    {
+        fprintf(stderr,
+            "acp: destination '%s' exists and is not regular or symlink\n",
+            dst);
+        return -1;
+    }
+
+    if (statResult == 0) {
+        if (isSameFile(pSrcStat, &dstStat)) {
+            fprintf(stderr, "acp: '%s' and '%s' are the same file\n",
+                src, dst);
+            return -1;
+        }
+        if (options & COPY_UPDATE_ONLY) {
+            if (!isSourceNewer(pSrcStat, &dstStat)) {
+                DBUG(("---  source is not newer: '%s'\n", src));
+                printNotNewerMsg(src, dst, options);
+                return 0;
+            }
+        }
+    }
+
+    /* extract the symlink contents */
+    nameLen = readlink(src, linkBuf, sizeof(linkBuf)-1);
+    if (nameLen <= 0) {
+        fprintf(stderr, "acp: unable to read symlink '%s': %s\n",
+            src, strerror(errno));
+        return -1;
+    }
+    linkBuf[nameLen] = '\0';
+    DBUG(("--- creating symlink file '%s' (--> %s)\n", dst, linkBuf));
+
+    if (statResult == 0) {
+        DBUG(("---  removing '%s'\n", dst));
+        if (unlink(dst) != 0) {
+            fprintf(stderr, "acp: unable to remove '%s': %s\n",
+                dst, strerror(errno));
+            return -1;
+        }
+    }
+
+    if (symlink(linkBuf, dst) != 0) {
+        fprintf(stderr, "acp: unable to create symlink '%s' [%s]: %s\n",
+            dst, linkBuf, strerror(errno));
+        return -1;
+    }
+
+    /*
+     * There's no way to set the file date or access permissions, but
+     * it is possible to set the owner.
+     */
+    if (options & COPY_PERMISSIONS) {
+        if (lchown(dst, pSrcStat->st_uid, pSrcStat->st_gid) != 0)
+            DBUG(("---  lchown failed: %s\n", strerror(errno)));
+    }
+
+    printCopyMsg(src, dst, options);
+
+    return 0;
+}
+#endif /* HAVE_SYMLINKS */
+
+/*
+ * Copy the contents of one directory to another.  Both "src" and "dst"
+ * must be directories.  We will create "dst" if it does not exist.
+ */
+int copyDirectory(const char* src, const char* dst, const struct stat* pSrcStat, unsigned int options)
+{
+    int retVal = 0;
+    struct stat dstStat;
+    DIR* dir;
+    int cc, statResult;
+
+    DBUG(("--- copy dir '%s' to '%s'\n", src, dst));
+
+    statResult = stat(dst, &dstStat);
+    if (statResult == 0 && !S_ISDIR(dstStat.st_mode)) {
+        fprintf(stderr,
+            "acp: destination '%s' exists and is not a directory\n", dst);
+        return -1;
+    } else if (statResult != 0 && errno != ENOENT) {
+        fprintf(stderr, "acp: unable to stat destination '%s'\n", dst);
+        return -1;
+    }
+
+    if (statResult == 0) {
+        if (isSameFile(pSrcStat, &dstStat)) {
+            fprintf(stderr,
+                "acp: cannot copy directory into itself ('%s' and '%s')\n",
+                src, dst);
+            return -1;
+        }
+    } else {
+        DBUG(("---  creating dir '%s'\n", dst));
+        cc = mkdir(dst, 0755);
+        if (cc != 0) {
+            fprintf(stderr, "acp: unable to create directory '%s': %s\n",
+                dst, strerror(errno));
+            return -1;
+        }
+
+        /* only print on mkdir */
+        printCopyMsg(src, dst, options);
+    }
+
+    /*
+     * Open the directory, and plow through its contents.
+     */
+    dir = opendir(src);
+    if (dir == NULL) {
+        fprintf(stderr, "acp: unable to open directory '%s': %s\n",
+            src, strerror(errno));
+        return -1;
+    }
+
+    while (1) {
+        struct dirent* ent;
+        char* srcFile;
+        char* dstFile;
+        int srcLen, dstLen, nameLen;
+
+        ent = readdir(dir);
+        if (ent == NULL)
+            break;
+
+        if (strcmp(ent->d_name, ".") == 0 ||
+            strcmp(ent->d_name, "..") == 0)
+        {
+            continue;
+        }
+
+        nameLen = strlen(ent->d_name);
+        srcLen = strlen(src);
+        dstLen = strlen(dst);
+
+        srcFile = malloc(srcLen +1 + nameLen +1);
+        memcpy(srcFile, src, srcLen);
+        srcFile[srcLen] = FSSEP;
+        memcpy(srcFile + srcLen+1, ent->d_name, nameLen +1);
+
+        dstFile = malloc(dstLen +1 + nameLen +1);
+        memcpy(dstFile, dst, dstLen);
+        dstFile[dstLen] = FSSEP;
+        memcpy(dstFile + dstLen+1, ent->d_name, nameLen +1);
+
+        if (copyFileRecursive(srcFile, dstFile, false, options) != 0)
+            retVal = -1;        /* note failure and keep going */
+
+        free(srcFile);
+        free(dstFile);
+    }
+    closedir(dir);
+
+    setPermissions(dst, pSrcStat, options);
+
+    return retVal;
+}
+
+/*
+ * Do the actual copy.  This is called recursively from copyDirectory().
+ *
+ * "dst" should only be a directory if "src" is also a directory.
+ *
+ * Returns 0 on success.
+ */
+static int copyFileRecursive(const char* src, const char* dst, bool isCmdLine, unsigned int options)
+{
+    char* srcExe = NULL;
+    char* dstExe = NULL;
+    char* dstDir = NULL;
+    struct stat srcStat;
+    int retVal = 0;
+    int statResult, statErrno;
+
+    /*
+     * Stat the source file.  If it doesn't exist, fail.
+     */
+    if (options & COPY_NO_DEREFERENCE)
+        statResult = lstat(src, &srcStat);
+    else
+        statResult = stat(src, &srcStat);
+    statErrno = errno;        /* preserve across .exe attempt */
+
+#ifdef WIN32_EXE
+    /*
+     * Here's the interesting part.  Under Cygwin, if you have a file
+     * called "foo.exe", stat("foo", ...) will succeed, but open("foo", ...)
+     * will fail.  We need to figure out what its name is supposed to be
+     * so we can create the correct destination file.
+     *
+     * If we don't have the "-e" flag set, we want "acp foo bar" to fail,
+     * not automatically find "foo.exe".  That way, if we really were
+     * trying to copy "foo", it doesn't grab something we don't want.
+     */
+    if (isCmdLine && statResult == 0) {
+        int tmpFd;
+        tmpFd = open(src, O_RDONLY | O_BINARY, 0);
+        if (tmpFd < 0) {
+            statResult = -1;
+            statErrno = ENOENT;
+        } else {
+            (void) close(tmpFd);
+        }
+    }
+
+    /*
+     * If we didn't find the file, try it again with ".exe".
+     */
+    if (isCmdLine && statResult < 0 && statErrno == ENOENT && (options & COPY_TRY_EXE)) {
+        srcExe = malloc(strlen(src) + 4 +1);
+        strcpy(srcExe, src);
+        strcat(srcExe, ".exe");
+
+        if (options & COPY_NO_DEREFERENCE)
+            statResult = lstat(srcExe, &srcStat);
+        else
+            statResult = stat(srcExe, &srcStat);
+
+        if (statResult == 0 && !S_ISREG(srcStat.st_mode))
+            statResult = -1;        /* fail, use original statErrno below */
+
+        if (statResult == 0) {
+            /* found a .exe, copy that instead */
+            dstExe = malloc(strlen(dst) + 4 +1);
+            strcpy(dstExe, dst);
+            strcat(dstExe, ".exe");
+
+            src = srcExe;
+            dst = dstExe;
+        } else {
+            DBUG(("---  couldn't find '%s' either\n", srcExe));
+        }
+    }
+#endif
+    if (statResult < 0) {
+        if (statErrno == ENOENT)
+            fprintf(stderr, "acp: file '%s' does not exist\n", src);
+        else
+            fprintf(stderr, "acp: unable to stat '%s': %s\n",
+                src, strerror(statErrno));
+        retVal = -1;
+        goto bail;
+    }
+
+    /*
+     * If "src" is a directory, ignore it if "recursive" isn't set.
+     *
+     * We want to create "dst" as a directory (or verify that it already
+     * exists as a directory), and then copy its contents.
+     */
+    if (S_ISDIR(srcStat.st_mode)) {
+        if (!(options & COPY_RECURSIVE)) {
+            fprintf(stderr, "acp: omitting directory '%s'\n", src);
+        } else {
+            retVal = copyDirectory(src, dst, &srcStat, options);
+        }
+#ifdef HAVE_SYMLINKS
+    } else if (S_ISLNK(srcStat.st_mode)) {
+        retVal = copySymlink(src, dst, &srcStat, options);
+#endif		
+    } else if (S_ISREG(srcStat.st_mode)) {
+        retVal = copyRegular(src, dst, &srcStat, options);
+    } else {
+        fprintf(stderr, "acp: skipping unusual file '%s' (mode=0%o)\n",
+            src, srcStat.st_mode);
+        retVal = -1;
+    }
+
+bail:
+    free(srcExe);
+    free(dstExe);
+    free(dstDir);
+    return retVal;
+}
+
+int copyFile(const char* src, const char* dst, unsigned int options)
+{
+    return copyFileRecursive(src, dst, true, options);
+}
+
+