r6108: Added smbsh/smbwrapper for Linux to example/libsmbclient tree; provided more...
[nivanova/samba-autobuild/.git] / examples / libsmbclient / smbwrapper / wrapper.c
diff --git a/examples/libsmbclient/smbwrapper/wrapper.c b/examples/libsmbclient/smbwrapper/wrapper.c
new file mode 100644 (file)
index 0000000..71d6f20
--- /dev/null
@@ -0,0 +1,1729 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 2.0
+   SMB wrapper functions
+   Copyright (C) Andrew Tridgell 1998
+   Copyright (C) Derrell Lipman 2002-2005
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/*
+ * This is a rewrite of the original wrapped.c file, using libdl to obtain
+ * pointers into the C library rather than attempting to find undocumented
+ * functions in the C library to call for native file access.  The problem
+ * with the original implementation's paradigm is that samba manipulates
+ * defines such that it gets the sizes of structures that it wants
+ * (e.g. mapping 32-bit functions to 64-bit functions with their associated
+ * 64-bit structure fields), but programs run under smbsh or using
+ * smbwrapper.so were not necessarily compiled with the same flags.  As an
+ * example of the problem, a program calling stat() passes a pointer to a
+ * "struct stat" but the fields in that structure are different in samba than
+ * they are in the calling program if the calling program was not compiled to
+ * force stat() to be mapped to stat64().
+ *
+ * In this version, we provide an interface to each of the native functions,
+ * not just the ones that samba is compiled to map to.  We obtain the function
+ * pointers from the C library using dlsym(), and for native file operations,
+ * directly call the same function that the calling application was
+ * requesting.  Since the size of the calling application's structures vary
+ * depending on what function was called, we use our own internal structures
+ * for passing information to/from the SMB equivalent functions, and map them
+ * back to the native structures before returning the result to the caller.
+ *
+ * This implementation was completed 25 December 2002.
+ * Derrell Lipman
+ */
+
+/* We do not want auto munging of 32->64 bit names in this file (only) */
+#undef _FILE_OFFSET_BITS
+#undef _GNU_SOURCE
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <utime.h>
+#include <stdio.h>
+#include <dirent.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include "libsmbclient.h"
+#include "wrapper.h"
+
+/*
+ * Debug bits:
+ * 0x0 = none
+ * 0x1 = display symbol definitions not found in C library
+ * 0x2 = show wrapper functions being called
+ * 0x4 = log to file SMBW_DEBUG_FILE instead of stderr
+ */
+#define SMBW_DEBUG      0x0
+#define SMBW_DEBUG_FILE "/tmp/smbw.log"
+
+int      smbw_debug = 0;
+
+#if SMBW_DEBUG & 0x2
+static int      debugFd = 2;
+#endif
+
+#ifndef ENOTSUP
+#define ENOTSUP EOPNOTSUPP
+#endif
+
+/*
+ * None of the methods of having the initialization function called
+ * automatically upon shared library startup are effective in all situations.
+ * We provide the "-init" parameter to the linker which is effective most of
+ * the time, but fails for applications that provide their own shared
+ * libraries with _init() functions (e.g. ps).  We can't use "-z initfirst"
+ * because the environment isn't yet set up at that point, so we can't find
+ * our shared memory identifier (see shared.c).  We therefore must resort to
+ * this tried-and-true method of keeping an "initialized" flag.  We check it
+ * prior to calling the initialize() function to save a function call (a slow
+ * operation on x86).
+ */
+#if SMBW_DEBUG & 0x2
+#  define check_init(buf)                                               \
+        do {                                                            \
+                int saved_errno = errno;                                \
+                if (! initialized) initialize();                        \
+                (* smbw_libc.write)(debugFd, "["buf"]", sizeof(buf)+1); \
+                errno = saved_errno;                                    \
+        } while (0);
+#else
+#  define check_init(buf)                               \
+        do {                                            \
+                if (! initialized) smbw_initialize();   \
+        } while (0);
+#endif
+
+static void initialize(void);
+
+static int initialized = 0;
+
+SMBW_libc_pointers smbw_libc;
+
+/*
+ * A public entry point used by the "-init" option to the linker.
+ */
+void smbw_initialize(void)
+{
+        initialize();
+}
+
+static void initialize(void)
+{
+        void *lib = NULL;
+        int saved_errno;
+#if SMBW_DEBUG & 0x1
+        char *error;
+#endif
+
+        saved_errno = errno;
+        
+        if (initialized) {
+                errno = saved_errno;
+                return;
+        }
+        initialized = 1;
+        
+        if ((lib = dlopen("/lib/libc.so.6", RTLD_NOW | RTLD_GLOBAL)) == NULL) {
+                exit(1);
+        }
+        
+#if SMBW_DEBUG & 0x1
+# define GETSYM(symname, symstring)                                     \
+        if ((smbw_libc.symname = dlsym(lib, symstring)) == NULL) {      \
+                if (smbw_libc.write != NULL &&                          \
+                    (error = dlerror()) != NULL) {                      \
+                        (* smbw_libc.write)(1, error, strlen(error));   \
+                        (* smbw_libc.write)(1, "\n", 1);                \
+                }                                                       \
+        }
+#else
+# define GETSYM(symname, symstring)                     \
+        smbw_libc.symname = dlsym(lib, symstring);
+#endif
+        
+        /*
+         * Get pointers to each of the symbols we'll need, from the C library
+         *
+         * Some of these symbols may not be found in the C library.  That's
+         * fine.  We declare all of them here, and if the C library supports
+         * them, they may be called so we have the wrappers for them.  If the
+         * C library doesn't support them, then the wrapper function will
+         * never be called, and the null pointer will never be dereferenced.
+         */
+        do {
+                GETSYM(write, "write"); /* first, to allow debugging */
+                GETSYM(open, "open");
+                GETSYM(_open, "_open");
+                GETSYM(__open, "__open");
+                GETSYM(open64, "open64");
+                GETSYM(_open64, "_open64");
+                GETSYM(__open64, "__open64");
+                GETSYM(pread, "pread");
+                GETSYM(pread64, "pread64");
+                GETSYM(pwrite, "pwrite");
+                GETSYM(pwrite64, "pwrite64");
+                GETSYM(close, "close");
+                GETSYM(__close, "__close");
+                GETSYM(_close, "_close");
+                GETSYM(fcntl, "fcntl");
+                GETSYM(__fcntl, "__fcntl");
+                GETSYM(_fcntl, "_fcntl");
+                GETSYM(getdents, "getdents");
+                GETSYM(__getdents, "__getdents");
+                GETSYM(_getdents, "_getdents");
+                GETSYM(getdents64, "getdents64");
+                GETSYM(lseek, "lseek");
+                GETSYM(__lseek, "__lseek");
+                GETSYM(_lseek, "_lseek");
+                GETSYM(lseek64, "lseek64");
+                GETSYM(__lseek64, "__lseek64");
+                GETSYM(_lseek64, "_lseek64");
+                GETSYM(read, "read");
+                GETSYM(__read, "__read");
+                GETSYM(_read, "_read");
+                GETSYM(__write, "__write");
+                GETSYM(_write, "_write");
+                GETSYM(access, "access");
+                GETSYM(chmod, "chmod");
+                GETSYM(fchmod, "fchmod");
+                GETSYM(chown, "chown");
+                GETSYM(fchown, "fchown");
+                GETSYM(__xstat, "__xstat");
+                GETSYM(getcwd, "getcwd");
+                GETSYM(mkdir, "mkdir");
+                GETSYM(__fxstat, "__fxstat");
+                GETSYM(__lxstat, "__lxstat");
+                GETSYM(stat, "stat");
+                GETSYM(lstat, "lstat");
+                GETSYM(fstat, "fstat");
+                GETSYM(unlink, "unlink");
+                GETSYM(utime, "utime");
+                GETSYM(utimes, "utimes");
+                GETSYM(readlink, "readlink");
+                GETSYM(rename, "rename");
+                GETSYM(rmdir, "rmdir");
+                GETSYM(symlink, "symlink");
+                GETSYM(dup, "dup");
+                GETSYM(dup2, "dup2");
+                GETSYM(opendir, "opendir");
+                GETSYM(readdir, "readdir");
+                GETSYM(closedir, "closedir");
+                GETSYM(telldir, "telldir");
+                GETSYM(seekdir, "seekdir");
+                GETSYM(creat, "creat");
+                GETSYM(creat64, "creat64");
+                GETSYM(__xstat64, "__xstat64");
+                GETSYM(stat64, "stat64");
+                GETSYM(__fxstat64, "__fxstat64");
+                GETSYM(fstat64, "fstat64");
+                GETSYM(__lxstat64, "__lxstat64");
+                GETSYM(lstat64, "lstat64");
+                GETSYM(_llseek, "_llseek");
+                GETSYM(readdir64, "readdir64");
+                GETSYM(readdir_r, "readdir_r");
+                GETSYM(readdir64_r, "readdir64_r");
+                GETSYM(setxattr, "setxattr");
+                GETSYM(lsetxattr, "lsetxattr");
+                GETSYM(fsetxattr, "fsetxattr");
+                GETSYM(getxattr, "getxattr");
+                GETSYM(lgetxattr, "lgetxattr");
+                GETSYM(fgetxattr, "fgetxattr");
+                GETSYM(removexattr, "removexattr");
+                GETSYM(lremovexattr, "lremovexattr");
+                GETSYM(fremovexattr, "fremovexattr");
+                GETSYM(listxattr, "listxattr");
+                GETSYM(llistxattr, "llistxattr");
+                GETSYM(flistxattr, "flistxattr");
+                GETSYM(chdir, "chdir");
+                GETSYM(fchdir, "fchdir");
+                GETSYM(fork, "fork");
+                GETSYM(select, "select");
+                GETSYM(_select, "_select");
+                GETSYM(__select, "__select");
+        } while (0);
+        
+        dlclose(lib);
+
+        if ((lib = dlopen("/lib/libc.so.6", RTLD_NOW | RTLD_GLOBAL)) == NULL) {
+                exit(1);
+        }
+        
+#if SMBW_DEBUG & 4
+        {
+            if ((debugFd =
+                 open(SMBW_DEBUG_FILE, O_WRONLY | O_CREAT | O_APPEND)) < 0)
+            {
+#               define SMBW_MESSAGE    "Could not create " SMBW_DEBUG_FILE "\n" 
+                (* smbw_libc.write)(1, SMBW_MESSAGE, sizeof(SMBW_MESSAGE));
+#               undef SMBW_MESSAGE
+                exit(1);
+            }
+        }
+#endif
+
+        errno = saved_errno;
+}
+
+/**
+ ** Static Functions
+ **/
+
+static void stat_convert(struct SMBW_stat *src, struct stat *dest)
+{
+        memset(dest, '\0', sizeof(*dest));
+       dest->st_size = src->s_size;
+       dest->st_mode = src->s_mode;
+       dest->st_ino = src->s_ino;
+       dest->st_dev = src->s_dev;
+       dest->st_rdev = src->s_rdev;
+       dest->st_nlink = src->s_nlink;
+       dest->st_uid = src->s_uid;
+       dest->st_gid = src->s_gid;
+       dest->st_atime = src->s_atime;
+       dest->st_mtime = src->s_mtime;
+       dest->st_ctime = src->s_ctime;
+       dest->st_blksize = src->s_blksize;
+       dest->st_blocks = src->s_blocks;
+}
+
+static void stat64_convert(struct SMBW_stat *src, struct stat64 *dest)
+{
+        memset(dest, '\0', sizeof(*dest));
+       dest->st_size = src->s_size;
+       dest->st_mode = src->s_mode;
+       dest->st_ino = src->s_ino;
+       dest->st_dev = src->s_dev;
+       dest->st_rdev = src->s_rdev;
+       dest->st_nlink = src->s_nlink;
+       dest->st_uid = src->s_uid;
+       dest->st_gid = src->s_gid;
+       dest->st_atime = src->s_atime;
+       dest->st_mtime = src->s_mtime;
+       dest->st_ctime = src->s_ctime;
+       dest->st_blksize = src->s_blksize;
+       dest->st_blocks = src->s_blocks;
+}
+
+static void dirent_convert(struct SMBW_dirent *src, struct dirent *dest)
+{
+        char *p;
+
+        memset(dest, '\0', sizeof(*dest));
+       dest->d_ino = src->d_ino;
+       dest->d_off = src->d_off;
+
+        switch(src->d_type)
+        {
+        case SMBC_WORKGROUP:
+        case SMBC_SERVER:
+        case SMBC_FILE_SHARE:
+        case SMBC_DIR:
+                dest->d_type = DT_DIR;
+                break;
+                
+        case SMBC_FILE:
+                dest->d_type = DT_REG;
+                break;
+                
+        case SMBC_PRINTER_SHARE:
+                dest->d_type = DT_CHR;
+                break;
+                
+        case SMBC_COMMS_SHARE:
+                dest->d_type = DT_SOCK;
+                break;
+                
+        case SMBC_IPC_SHARE:
+                dest->d_type = DT_FIFO;
+                break;
+                
+        case SMBC_LINK:
+                dest->d_type = DT_LNK;
+                break;
+        }
+
+       dest->d_reclen = src->d_reclen;
+       strncpy(dest->d_name, src->d_name, sizeof(dest->d_name));
+        p = dest->d_name + strlen(dest->d_name) + 1;
+        strncpy(p, src->d_comment, sizeof(dest->d_name) - (p - dest->d_name));
+}
+
+static void dirent64_convert(struct SMBW_dirent *src, struct dirent64 *dest)
+{
+        char *p;
+
+        memset(dest, '\0', sizeof(*dest));
+       dest->d_ino = src->d_ino;
+       dest->d_off = src->d_off;
+
+        switch(src->d_type)
+        {
+        case SMBC_WORKGROUP:
+        case SMBC_SERVER:
+        case SMBC_FILE_SHARE:
+        case SMBC_DIR:
+                dest->d_type = DT_DIR;
+                break;
+                
+        case SMBC_FILE:
+                dest->d_type = DT_REG;
+                break;
+                
+        case SMBC_PRINTER_SHARE:
+                dest->d_type = DT_CHR;
+                break;
+                
+        case SMBC_COMMS_SHARE:
+                dest->d_type = DT_SOCK;
+                break;
+                
+        case SMBC_IPC_SHARE:
+                dest->d_type = DT_FIFO;
+                break;
+                
+        case SMBC_LINK:
+                dest->d_type = DT_LNK;
+                break;
+        }
+
+       dest->d_reclen = src->d_reclen;
+       strncpy(dest->d_name, src->d_name, sizeof(dest->d_name));
+        p = dest->d_name + strlen(dest->d_name) + 1;
+        strncpy(p, src->d_comment, sizeof(dest->d_name) - (p - dest->d_name));
+}
+
+static int openx(char *name, int flags, mode_t mode, int (* f)(char *, int, mode_t))
+{
+       if (smbw_path(name)) {
+               return smbw_open(name, flags, mode);
+       }
+
+        return (* f)(name, flags, mode);
+}
+
+static int closex(int fd, int (* f)(int fd))
+{
+       if (smbw_fd(fd)) {
+               return smbw_close(fd);
+       }
+
+        return (* f)(fd);
+}
+
+static int fcntlx(int fd, int cmd, long arg, int (* f)(int, int, long))
+{
+       if (smbw_fd(fd)) {
+               return smbw_fcntl(fd, cmd, arg);
+       }
+
+        return (* f)(fd, cmd, arg);
+}
+
+static int getdentsx(int fd, struct dirent *external, unsigned int count, int (* f)(int, struct dirent *, unsigned int))
+{
+       if (smbw_fd(fd)) {
+                int i;
+                int internal_count;
+                struct SMBW_dirent *internal;
+                int ret;
+                int n;
+
+                /*
+                 * LIMITATION: If they pass a count which is not a multiple of
+                 * the size of struct dirent, they will not get a partial
+                 * structure; we ignore the excess count.
+                 */
+                n = (count / sizeof(struct dirent));
+
+                internal_count = sizeof(struct SMBW_dirent) * n;
+                internal = malloc(internal_count);
+                if (internal == NULL) {
+                        errno = ENOMEM;
+                        return -1;
+                }
+               ret = smbw_getdents(fd, internal, internal_count);
+                if (ret <= 0)
+                        return ret;
+
+                ret = sizeof(struct dirent) * n;
+                
+                for (i = 0; i < n; i++)
+                        dirent_convert(&internal[i], &external[i]);
+
+                return ret;
+       }
+
+        return (* f)(fd, external, count);
+}
+
+static off_t lseekx(int fd,
+                    off_t offset,
+                    int whence,
+                    off_t (* f)(int, off_t, int))
+{
+        off_t           ret;
+
+        /*
+         * We have left the definitions of the smbw_ functions undefined,
+         * because types such as off_t can differ in meaning betweent his
+         * function and smbw.c et al.  Functions that return other than an
+         * integer value, however, MUST have their return value defined.
+         */
+        off64_t         smbw_lseek();
+
+        if (smbw_fd(fd)) {
+               return (off_t) smbw_lseek(fd, offset, whence);
+       }
+
+        ret = (* f)(fd, offset, whence);
+        if (smbw_debug)
+        {
+                printf("lseekx(%d, 0x%llx) returned 0x%llx\n",
+                       fd,
+                       (unsigned long long) offset,
+                       (unsigned long long) ret);
+        }
+        return ret;
+}
+
+static off64_t lseek64x(int fd,
+                        off64_t offset,
+                        int whence,
+                        off64_t (* f)(int, off64_t, int))
+{
+        off64_t         ret;
+
+        /*
+         * We have left the definitions of the smbw_ functions undefined,
+         * because types such as off_t can differ in meaning betweent his
+         * function and smbw.c et al.  Functions that return other than an
+         * integer value, however, MUST have their return value defined.
+         */
+        off64_t         smbw_lseek();
+
+       if (smbw_fd(fd))
+               ret = smbw_lseek(fd, offset, whence);
+        else
+                ret = (* f)(fd, offset, whence);
+        if (smbw_debug)
+        {
+                printf("lseek64x(%d, 0x%llx) returned 0x%llx\n",
+                       fd,
+                       (unsigned long long) offset,
+                       (unsigned long long) ret);
+        }
+        return ret;
+}
+
+static ssize_t readx(int fd, void *buf, size_t count, ssize_t (* f)(int, void *, size_t))
+{
+       if (smbw_fd(fd)) {
+               return smbw_read(fd, buf, count);
+       }
+
+        return (* f)(fd, buf, count);
+}
+
+static ssize_t writex(int fd, void *buf, size_t count, ssize_t (* f)(int, void *, size_t))
+{
+       if (smbw_fd(fd)) {
+               return smbw_write(fd, buf, count);
+       }
+
+        return (* f)(fd, buf, count);
+}
+
+
+/**
+ ** Wrapper Functions
+ **/
+
+int open(__const char *name, int flags, ...)
+{
+        va_list ap;
+        mode_t mode;
+
+        va_start(ap, flags);
+        mode = va_arg(ap, mode_t);
+        va_end(ap);
+
+        check_init("open");
+
+        return openx((char *) name, flags, mode, smbw_libc.open);
+}
+
+int _open(char *name, int flags, mode_t mode)
+{
+        check_init("open");
+
+        return openx(name, flags, mode, smbw_libc._open);
+}
+
+int __open(char *name, int flags, mode_t mode)
+{
+        check_init("open");
+
+        return openx(name, flags, mode, smbw_libc.__open);
+}
+
+int open64 (__const char *name, int flags, ...)
+{
+        va_list ap;
+        mode_t mode;
+
+        va_start(ap, flags);
+        mode = va_arg(ap, mode_t);
+        va_end(ap);
+
+        check_init("open64");
+        return openx((char *) name, flags, mode, smbw_libc.open64);
+}
+
+int _open64(char *name, int flags, mode_t mode)
+{
+        check_init("_open64");
+        return openx(name, flags, mode, smbw_libc._open64);
+}
+
+int __open64(char *name, int flags, mode_t mode)
+{
+        check_init("__open64");
+        return openx(name, flags, mode, smbw_libc.__open64);
+}
+
+ssize_t pread(int fd, void *buf, size_t size, off_t ofs)
+{
+        check_init("pread");
+
+       if (smbw_fd(fd)) {
+               return smbw_pread(fd, buf, size, ofs);
+       }
+
+        return (* smbw_libc.pread)(fd, buf, size, ofs);
+}
+
+ssize_t pread64(int fd, void *buf, size_t size, off64_t ofs)
+{
+        check_init("pread64");
+
+       if (smbw_fd(fd)) {
+               return smbw_pread(fd, buf, size, (off_t) ofs);
+       }
+
+        return (* smbw_libc.pread64)(fd, buf, size, ofs);
+}
+
+ssize_t pwrite(int fd, const void *buf, size_t size, off_t ofs)
+{
+        check_init("pwrite");
+
+       if (smbw_fd(fd)) {
+               return smbw_pwrite(fd, (void *) buf, size, ofs);
+       }
+
+        return (* smbw_libc.pwrite)(fd, (void *) buf, size, ofs);
+}
+
+ssize_t pwrite64(int fd,  const void *buf, size_t size, off64_t ofs)
+{
+        check_init("pwrite64");
+
+       if (smbw_fd(fd)) {
+               return smbw_pwrite(fd, (void *) buf, size, (off_t) ofs);
+       }
+
+        return (* smbw_libc.pwrite64)(fd, (void *) buf, size, ofs);
+}
+
+int chdir(const char *name)
+{
+        check_init("chdir");
+        return smbw_chdir((char *) name);;
+}
+
+int __chdir(char *name)
+{
+        check_init("__chdir");
+        return smbw_chdir(name);
+}
+
+int _chdir(char *name)
+{
+        check_init("_chdir");
+        return smbw_chdir(name);
+}
+
+int close(int fd)
+{
+        check_init("close");
+        return closex(fd, smbw_libc.close);
+}
+
+int __close(int fd)
+{
+        check_init("__close");
+        return closex(fd, smbw_libc.__close);
+}
+
+int _close(int fd)
+{
+        check_init("_close");
+        return closex(fd, smbw_libc._close);
+}
+
+int fchdir(int fd)
+{
+        check_init("fchdir");
+       return smbw_fchdir(fd);
+}
+
+int __fchdir(int fd)
+{
+        check_init("__fchdir");
+       return fchdir(fd);
+}
+
+int _fchdir(int fd)
+{
+        check_init("_fchdir");
+       return fchdir(fd);
+}
+
+int fcntl (int fd, int cmd, ...)
+{
+        va_list ap;
+        long arg;
+
+        va_start(ap, cmd);
+        arg = va_arg(ap, long);
+        va_end(ap);
+
+        check_init("fcntl");
+        return fcntlx(fd, cmd, arg, smbw_libc.fcntl);
+}
+
+int __fcntl(int fd, int cmd, ...)
+{
+        va_list ap;
+        long arg;
+
+        va_start(ap, cmd);
+        arg = va_arg(ap, long);
+        va_end(ap);
+
+        check_init("__fcntl");
+        return fcntlx(fd, cmd, arg, smbw_libc.__fcntl);
+}
+
+int _fcntl(int fd, int cmd, ...)
+{
+        va_list ap;
+        long arg;
+
+        va_start(ap, cmd);
+        arg = va_arg(ap, long);
+        va_end(ap);
+
+        check_init("_fcntl");
+        return fcntlx(fd, cmd, arg, smbw_libc._fcntl);
+}
+
+int getdents(int fd, struct dirent *dirp, unsigned int count)
+{
+        check_init("getdents");
+        return getdentsx(fd, dirp, count, smbw_libc.getdents);
+}
+
+int __getdents(int fd, struct dirent *dirp, unsigned int count)
+{
+        check_init("__getdents");
+        return getdentsx(fd, dirp, count, smbw_libc.__getdents);
+}
+
+int _getdents(int fd, struct dirent *dirp, unsigned int count)
+{
+        check_init("_getdents");
+        return getdentsx(fd, dirp, count, smbw_libc._getdents);
+}
+
+int getdents64(int fd, struct dirent64 *external, unsigned int count)
+{
+        check_init("getdents64");
+       if (smbw_fd(fd)) {
+                int i;
+                struct SMBW_dirent *internal;
+                int ret;
+                int n;
+
+                /*
+                 * LIMITATION: If they pass a count which is not a multiple of
+                 * the size of struct dirent, they will not get a partial
+                 * structure; we ignore the excess count.
+                 */
+                n = (count / sizeof(struct dirent64));
+
+                internal = malloc(sizeof(struct SMBW_dirent) * n);
+                if (internal == NULL) {
+                        errno = ENOMEM;
+                        return -1;
+                }
+               ret = smbw_getdents(fd, internal, count);
+                if (ret <= 0)
+                        return ret;
+
+                ret = sizeof(struct dirent) * count;
+                
+                for (i = 0; count; i++, count--)
+                        dirent64_convert(&internal[i], &external[i]);
+
+                return ret;
+       }
+
+        return (* smbw_libc.getdents64)(fd, external, count);
+}
+
+off_t lseek(int fd, off_t offset, int whence)
+{
+        off_t           ret;
+        check_init("lseek");
+        ret = lseekx(fd, offset, whence, smbw_libc.lseek);
+        if (smbw_debug)
+        {
+                printf("lseek(%d, 0x%llx) returned 0x%llx\n",
+                       fd,
+                       (unsigned long long) offset,
+                       (unsigned long long) ret);
+        }
+        return ret;
+}
+
+off_t __lseek(int fd, off_t offset, int whence)
+{
+        off_t           ret;
+        check_init("__lseek");
+        ret = lseekx(fd, offset, whence, smbw_libc.__lseek);
+        if (smbw_debug)
+        {
+                printf("__lseek(%d, 0x%llx) returned 0x%llx\n",
+                       fd,
+                       (unsigned long long) offset,
+                       (unsigned long long) ret);
+        }
+        return ret;
+}
+
+off_t _lseek(int fd, off_t offset, int whence)
+{
+        off_t           ret;
+        check_init("_lseek");
+        ret = lseekx(fd, offset, whence, smbw_libc._lseek);
+        if (smbw_debug)
+        {
+                printf("_lseek(%d, 0x%llx) returned 0x%llx\n",
+                       fd,
+                       (unsigned long long) offset,
+                       (unsigned long long) ret);
+        }
+        return ret;
+}
+
+off64_t lseek64(int fd, off64_t offset, int whence)
+{
+        off64_t         ret;
+        check_init("lseek64");
+        ret = lseek64x(fd, offset, whence, smbw_libc.lseek64);
+        if (smbw_debug)
+        {
+                printf("lseek64(%d, 0x%llx) returned 0x%llx\n",
+                       fd,
+                       (unsigned long long) offset,
+                       (unsigned long long) ret);
+        }
+        return ret;
+}
+
+off64_t __lseek64(int fd, off64_t offset, int whence)
+{
+        check_init("__lseek64");
+        return lseek64x(fd, offset, whence, smbw_libc.__lseek64);
+}
+
+off64_t _lseek64(int fd, off64_t offset, int whence)
+{
+        off64_t         ret;
+        check_init("_lseek64");
+        ret = lseek64x(fd, offset, whence, smbw_libc._lseek64);
+        if (smbw_debug)
+        {
+                printf("_lseek64(%d, 0x%llx) returned 0x%llx\n",
+                       fd,
+                       (unsigned long long) offset,
+                       (unsigned long long) ret);
+        }
+        return ret;
+}
+
+ssize_t read(int fd, void *buf, size_t count)
+{
+        check_init("read");
+        return readx(fd, buf, count, smbw_libc.read);
+}
+
+ssize_t __read(int fd, void *buf, size_t count)
+{
+        check_init("__read");
+        return readx(fd, buf, count, smbw_libc.__read);
+}
+
+ssize_t _read(int fd, void *buf, size_t count)
+{
+        check_init("_read");
+        return readx(fd, buf, count, smbw_libc._read);
+}
+
+ssize_t write(int fd, const void *buf, size_t count)
+{
+        check_init("write");
+        return writex(fd, (void *) buf, count, smbw_libc.write);
+}
+
+ssize_t __write(int fd, const void *buf, size_t count)
+{
+        check_init("__write");
+        return writex(fd, (void *) buf, count, smbw_libc.__write);
+}
+
+ssize_t _write(int fd, const void *buf, size_t count)
+{
+        check_init("_write");
+        return writex(fd, (void *) buf, count, smbw_libc._write);
+}
+
+int access(const char *name, int mode)
+{
+        check_init("access");
+
+       if (smbw_path((char *) name)) {
+               return smbw_access((char *) name, mode);
+       }
+
+        return (* smbw_libc.access)((char *) name, mode);
+}
+
+int chmod(const char *name, mode_t mode)
+{
+        check_init("chmod");
+
+       if (smbw_path((char *) name)) {
+               return smbw_chmod((char *) name, mode);
+       }
+
+        return (* smbw_libc.chmod)((char *) name, mode);
+}
+
+int fchmod(int fd, mode_t mode)
+{
+        check_init("fchmod");
+
+       if (smbw_fd(fd)) {
+                /* Not yet implemented in libsmbclient */
+                return ENOTSUP;
+       }
+
+        return (* smbw_libc.fchmod)(fd, mode);
+}
+
+int chown(const char *name, uid_t owner, gid_t group)
+{
+        check_init("chown");
+
+       if (smbw_path((char *) name)) {
+               return smbw_chown((char *) name, owner, group);
+       }
+
+        return (* smbw_libc.chown)((char *) name, owner, group);
+}
+
+int fchown(int fd, uid_t owner, gid_t group)
+{
+        check_init("fchown");
+
+       if (smbw_fd(fd)) {
+                /* Not yet implemented in libsmbclient */
+                return ENOTSUP;
+       }
+
+        return (* smbw_libc.fchown)(fd, owner, group);
+}
+
+char *getcwd(char *buf, size_t size)
+{
+        check_init("getcwd");
+       return (char *)smbw_getcwd(buf, size);
+}
+
+int mkdir(const char *name, mode_t mode)
+{
+        check_init("mkdir");
+
+       if (smbw_path((char *) name)) {
+               return smbw_mkdir((char *) name, mode);
+       }
+
+        return (* smbw_libc.mkdir)((char *) name, mode);
+}
+
+int __fxstat(int vers, int fd, struct stat *st)
+{
+        check_init("__fxstat");
+
+       if (smbw_fd(fd)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_fstat(fd, &statbuf);
+                stat_convert(&statbuf, st);
+                return ret;
+       }
+
+        return (* smbw_libc.__fxstat)(vers, fd, st);
+}
+
+int __xstat(int vers, const char *name, struct stat *st)
+{
+        check_init("__xstat");
+
+       if (smbw_path((char *) name)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_stat((char *) name, &statbuf);
+                stat_convert(&statbuf, st);
+                return ret;
+       }
+
+        return (* smbw_libc.__xstat)(vers, (char *) name, st);
+}
+
+int __lxstat(int vers, const char *name, struct stat *st)
+{
+        check_init("__lxstat");
+
+       if (smbw_path((char *) name)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_stat((char *) name, &statbuf);
+                stat_convert(&statbuf, st);
+                return ret;
+       }
+
+        return (* smbw_libc.__lxstat)(vers, (char *) name, st);
+}
+
+int stat(const char *name, struct stat *st)
+{
+        check_init("stat");
+
+       if (smbw_path((char *) name)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_stat((char *) name, &statbuf);
+                stat_convert(&statbuf, st);
+                return ret;
+       }
+
+        return (* smbw_libc.stat)((char *) name, st);
+}
+
+int lstat(const char *name, struct stat *st)
+{
+        check_init("lstat");
+
+       if (smbw_path((char *) name)) {
+                struct SMBW_stat statbuf;
+                int ret = smbw_stat((char *) name, &statbuf);
+                stat_convert(&statbuf, st);
+                return ret;
+       }
+
+        return (* smbw_libc.lstat)((char *) name, st);
+}
+
+int fstat(int fd, struct stat *st)
+{
+        check_init("fstat");
+
+       if (smbw_fd(fd)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_fstat(fd, &statbuf);
+                stat_convert(&statbuf, st);
+                return ret;
+       }
+
+        return (* smbw_libc.fstat)(fd, st);
+}
+
+int unlink(const char *name)
+{
+        check_init("unlink");
+
+       if (smbw_path((char *) name)) {
+               return smbw_unlink((char *) name);
+       }
+
+        return (* smbw_libc.unlink)((char *) name);
+}
+
+int utime(const char *name, const struct utimbuf *tvp)
+{
+        check_init("utime");
+
+       if (smbw_path(name)) {
+               return smbw_utime(name, (struct utimbuf *) tvp);
+       }
+
+        return (* smbw_libc.utime)((char *) name, (struct utimbuf *) tvp);
+}
+
+int utimes(const char *name, const struct timeval *tvp)
+{
+        check_init("utimes");
+
+       if (smbw_path(name)) {
+               return smbw_utimes(name, (struct timeval *) tvp);
+       }
+
+        return (* smbw_libc.utimes)((char *) name, (struct timeval *) tvp);
+}
+
+int readlink(const char *path, char *buf, size_t bufsize)
+{
+        check_init("readlink");
+
+       if (smbw_path((char *) path)) {
+               return smbw_readlink(path, (char *) buf, bufsize);
+       }
+
+        return (* smbw_libc.readlink)((char *) path, buf, bufsize);
+}
+
+int rename(const char *oldname, const char *newname)
+{
+       int p1, p2;
+
+        check_init("rename");
+
+       p1 = smbw_path((char *) oldname); 
+       p2 = smbw_path((char *) newname); 
+       if (p1 ^ p2) {
+               /* can't cross filesystem boundaries */
+               errno = EXDEV;
+               return -1;
+       }
+       if (p1 && p2) {
+               return smbw_rename((char *) oldname, (char *) newname);
+       }
+
+        return (* smbw_libc.rename)((char *) oldname, (char *) newname);
+}
+
+int rmdir(const char *name)
+{
+        check_init("rmdir");
+
+       if (smbw_path((char *) name)) {
+               return smbw_rmdir((char *) name);
+       }
+
+        return (* smbw_libc.rmdir)((char *) name);
+}
+
+int symlink(const char *topath, const char *frompath)
+{
+       int p1, p2;
+
+        check_init("symlink");
+
+       p1 = smbw_path((char *) topath); 
+       p2 = smbw_path((char *) frompath); 
+       if (p1 || p2) {
+               /* can't handle symlinks */
+               errno = EPERM;
+               return -1;
+       }
+
+        return (* smbw_libc.symlink)((char *) topath, (char *) frompath);
+}
+
+int dup(int fd)
+{
+        check_init("dup");
+
+       if (smbw_fd(fd)) {
+               return smbw_dup(fd);
+       }
+
+        return (* smbw_libc.dup)(fd);
+}
+
+int dup2(int oldfd, int newfd)
+{
+        check_init("dup2");
+
+       if (smbw_fd(newfd)) {
+               (* smbw_libc.close)(newfd);
+       }
+        
+       if (smbw_fd(oldfd)) {
+               return smbw_dup2(oldfd, newfd);
+       }
+
+        return (* smbw_libc.dup2)(oldfd, newfd);
+}
+
+
+DIR *opendir(const char *name)
+{
+        check_init("opendir");
+
+       if (smbw_path((char *) name)) {
+               return (void *)smbw_opendir((char *) name);
+       }
+
+        return (* smbw_libc.opendir)((char *) name);
+}
+
+struct dirent *readdir(DIR *dir)
+{
+        check_init("readdir");
+
+       if (smbw_dirp(dir)) {
+                static struct dirent external;
+                struct SMBW_dirent * internal = (void *)smbw_readdir(dir);
+                if (internal != NULL) {
+                        dirent_convert(internal, &external);
+                        return &external;
+                }
+                return NULL;
+       }
+        return (* smbw_libc.readdir)(dir);
+}
+
+int closedir(DIR *dir)
+{
+        check_init("closedir");
+
+       if (smbw_dirp(dir)) {
+               return smbw_closedir(dir);
+       }
+
+        return (* smbw_libc.closedir)(dir);
+}
+
+long telldir(DIR *dir)
+{
+        check_init("telldir");
+
+       if (smbw_dirp(dir)) {
+               return (long) smbw_telldir(dir);
+       }
+
+        return (* smbw_libc.telldir)(dir);
+}
+
+void seekdir(DIR *dir, long offset)
+{
+        check_init("seekdir");
+
+       if (smbw_dirp(dir)) {
+               smbw_seekdir(dir, (long long) offset);
+               return;
+       }
+
+        (* smbw_libc.seekdir)(dir, offset);
+}
+
+int creat(const char *path, mode_t mode)
+{
+       extern int creat_bits;
+
+        check_init("creat");
+       return openx((char *) path, creat_bits, mode, smbw_libc.open);
+}
+
+int creat64(const char *path, mode_t mode)
+{
+       extern int creat_bits;
+
+        check_init("creat64");
+       return openx((char *) path, creat_bits, mode, smbw_libc.open64);
+}
+
+int __xstat64 (int ver, const char *name, struct stat64 *st64)
+{
+        check_init("__xstat64");
+
+       if (smbw_path((char *) name)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_stat((char *) name, &statbuf);
+               stat64_convert(&statbuf, st64);
+               return ret;
+       }
+
+        return (* smbw_libc.__xstat64)(ver, (char *) name, st64);
+}
+
+int stat64(const char *name, struct stat64 *st64)
+{
+        check_init("stat64");
+
+       if (smbw_path((char *) name)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_stat((char *) name, &statbuf);
+               stat64_convert(&statbuf, st64);
+               return ret;
+       }
+
+        return (* smbw_libc.stat64)((char *) name, st64);
+}
+
+int __fxstat64(int ver, int fd, struct stat64 *st64)
+{
+        check_init("__fxstat64");
+
+       if (smbw_fd(fd)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_fstat(fd, &statbuf);
+               stat64_convert(&statbuf, st64);
+               return ret;
+       }
+
+        return (* smbw_libc.__fxstat64)(ver, fd, st64);
+}
+
+int fstat64(int fd, struct stat64 *st64)
+{
+        check_init("fstat64");
+
+       if (smbw_fd(fd)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_fstat(fd, &statbuf);
+               stat64_convert(&statbuf, st64);
+               return ret;
+       }
+
+        return (* smbw_libc.fstat64)(fd, st64);
+}
+
+int __lxstat64(int ver, const char *name, struct stat64 *st64)
+{
+        check_init("__lxstat64");
+
+       if (smbw_path((char *) name)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_stat(name, &statbuf);
+               stat64_convert(&statbuf, st64);
+               return ret;
+       }
+
+        return (* smbw_libc.__lxstat64)(ver, (char *) name, st64);
+}
+
+int lstat64(const char *name, struct stat64 *st64)
+{
+        check_init("lstat64");
+
+       if (smbw_path((char *) name)) {
+                struct SMBW_stat statbuf;
+               int ret = smbw_stat((char *) name, &statbuf);
+               stat64_convert(&statbuf, st64);
+               return ret;
+       }
+
+        return (* smbw_libc.lstat64)((char *) name, st64);
+}
+
+int _llseek(unsigned int fd,  unsigned  long  offset_high, unsigned  long  offset_low,  loff_t  *result, unsigned int whence)
+{
+        check_init("_llseek");
+
+       if (smbw_fd(fd)) {
+               *result = lseek(fd, offset_low, whence);
+                return (*result < 0 ? -1 : 0);
+       }
+
+        return (* smbw_libc._llseek)(fd, offset_high, offset_low, result, whence);
+}
+
+struct dirent64 *readdir64(DIR *dir)
+{
+        check_init("readdir64");
+
+       if (smbw_dirp(dir)) {
+                static struct dirent64 external;
+                struct SMBW_dirent * internal = (void *)smbw_readdir(dir);
+                if (internal != NULL) {
+                        dirent64_convert(internal, &external);
+                        return &external;
+                }
+                return NULL;
+       }
+
+        return (* smbw_libc.readdir64)(dir);
+}
+
+int readdir_r(DIR *dir, struct dirent *external, struct dirent **result)
+{
+        check_init("readdir_r");
+
+       if (smbw_dirp(dir)) {
+                struct SMBW_dirent internal;
+                int ret = smbw_readdir_r(dir, &internal, NULL);
+                if (ret == 0) {
+                        dirent_convert(&internal, external);
+                        *result = external;
+                }
+               return ret;
+       }
+
+        return (* smbw_libc.readdir_r)(dir, external, result);
+}
+
+int readdir64_r(DIR *dir, struct dirent64 *external, struct dirent64 **result)
+{
+        check_init("readdir64_r");
+
+       if (smbw_dirp(dir)) {
+                struct SMBW_dirent internal;
+                int ret = smbw_readdir_r(dir, &internal, NULL);
+                if (ret == 0) {
+                        dirent64_convert(&internal, external);
+                        *result = external;
+                }
+               return ret;
+       }
+
+        return (* smbw_libc.readdir64_r)(dir, external, result);
+}
+
+int fork(void)
+{
+        check_init("fork");
+       return smbw_fork();
+}
+
+int setxattr(const char *fname,
+             const char *name,
+             const void *value,
+             size_t size,
+             int flags)
+{
+       if (smbw_path(fname)) {
+               return smbw_setxattr(fname, name, value, size, flags);
+       }
+
+        return (* smbw_libc.setxattr)(fname, name, value, size, flags);
+}
+
+int lsetxattr(const char *fname,
+              const char *name,
+              const void *value,
+              size_t size,
+              int flags)
+{
+       if (smbw_path(fname)) {
+               return smbw_lsetxattr(fname, name, value, size, flags);
+       }
+
+        return (* smbw_libc.lsetxattr)(fname, name, value, size, flags);
+}
+
+int fsetxattr(int fd,
+              const char *name,
+              const void *value,
+              size_t size,
+              int flags)
+{
+       if (smbw_fd(fd)) {
+               return smbw_fsetxattr(fd, name, value, size, flags);
+       }
+
+        return (* smbw_libc.fsetxattr)(fd, name, value, size, flags);
+}
+
+int getxattr(const char *fname,
+             const char *name,
+             const void *value,
+             size_t size)
+{
+       if (smbw_path(fname)) {
+               return smbw_getxattr(fname, name, value, size);
+       }
+
+        return (* smbw_libc.getxattr)(fname, name, value, size);
+}
+
+int lgetxattr(const char *fname,
+              const char *name,
+              const void *value,
+              size_t size)
+{
+       if (smbw_path(fname)) {
+               return smbw_lgetxattr(fname, name, value, size);
+       }
+
+        return (* smbw_libc.lgetxattr)(fname, name, value, size);
+}
+
+int fgetxattr(int fd,
+              const char *name,
+              const void *value,
+              size_t size)
+{
+       if (smbw_fd(fd)) {
+               return smbw_fgetxattr(fd, name, value, size);
+       }
+
+        return (* smbw_libc.fgetxattr)(fd, name, value, size);
+}
+
+int removexattr(const char *fname,
+                const char *name)
+{
+       if (smbw_path(fname)) {
+               return smbw_removexattr(fname, name);
+       }
+
+        return (* smbw_libc.removexattr)(fname, name);
+}
+
+int lremovexattr(const char *fname,
+                 const char *name)
+{
+       if (smbw_path(fname)) {
+               return smbw_lremovexattr(fname, name);
+       }
+
+        return (* smbw_libc.lremovexattr)(fname, name);
+}
+
+int fremovexattr(int fd,
+                 const char *name)
+{
+       if (smbw_fd(fd)) {
+               return smbw_fremovexattr(fd, name);
+       }
+
+        return (* smbw_libc.fremovexattr)(fd, name);
+}
+
+int listxattr(const char *fname,
+              char *list,
+              size_t size)
+{
+       if (smbw_path(fname)) {
+               return smbw_listxattr(fname, list, size);
+       }
+
+        return (* smbw_libc.listxattr)(fname, list, size);
+}
+
+int llistxattr(const char *fname,
+               char *list,
+               size_t size)
+{
+       if (smbw_path(fname)) {
+               return smbw_llistxattr(fname, list, size);
+       }
+
+        return (* smbw_libc.llistxattr)(fname, list, size);
+}
+
+int flistxattr(int fd,
+               char *list,
+               size_t size)
+{
+       if (smbw_fd(fd)) {
+                return smbw_flistxattr(fd, list, size);
+       }
+
+        return (* smbw_libc.flistxattr)(fd, list, size);
+}
+
+
+/*
+ * We're ending up with a different implementation of malloc() with smbwrapper
+ * than without it.  The one with it does not support returning a non-NULL
+ * pointer from a call to malloc(0), and many apps depend on getting a valid
+ * pointer when requesting zero length (e.g. df, emacs).
+ *
+ * Unfortunately, initializing the smbw_libc[] array via the dynamic link
+ * library (libdl) requires malloc so we can't just do the same type of
+ * mapping to the C library as we do with everything else.  We need to
+ * implement a different way of allocating memory that ensures that the C
+ * library version of malloc() gets used.  This is the only place where we
+ * kludge the code to use an undocumented interface to the C library.
+ *
+ * If anyone can come up with a way to dynamically link to the C library
+ * rather than using this undocumented interface, I'd sure love to hear about
+ * it.  Better yet, if you can figure out where the alternate malloc()
+ * functions are coming from and arrange for them not to be called, that would
+ * be even better.  We should try to avoid wrapping functions that don't
+ * really require it.
+ */
+
+void *malloc(size_t size)
+{
+        void *__libc_malloc(size_t size);
+        return __libc_malloc(size);
+}
+
+void *calloc(size_t nmemb, size_t size)
+{
+        void *__libc_calloc(size_t nmemb, size_t size);
+        return __libc_calloc(nmemb, size);
+}
+
+void *realloc(void *ptr, size_t size)
+{
+        void *__libc_realloc(void *ptr, size_t size);
+        return __libc_realloc(ptr, size);
+}
+
+void free(void *ptr)
+{
+        static int      in_progress = 0;
+        void __libc_free(void *ptr);
+
+        if (in_progress) return;
+        in_progress = 1;
+        __libc_free(ptr);
+        in_progress = 0;
+}
+
+
+#if 0                           /* SELECT */
+
+static struct sigaction user_action[_NSIG];
+
+static void
+smbw_sigaction_handler(int signum,
+                       siginfo_t *info,
+                       void *context)
+{
+        /* Our entire purpose for trapping signals is to call this! */
+        sys_select_signal();
+
+        /* Call the user's handler */
+        if (user_action[signum].sa_handler != SIG_IGN &&
+            user_action[signum].sa_handler != SIG_DFL &&
+            user_action[signum].sa_handler != SIG_ERR) {
+                (* user_action[signum].sa_sigaction)(signum, info, context);
+        }
+}
+
+
+/*
+ * Every Samba signal handler must call sys_select_signal() to avoid a race
+ * condition, so we'll take whatever signal handler is currently assigned,
+ * call call sys_select_signal() in addition to their call.
+ */
+static int
+do_select(int n,
+          fd_set *readfds,
+          fd_set *writefds,
+          fd_set *exceptfds,
+          struct timeval *timeout,
+          int (* select_fn)(int n,
+                            fd_set *readfds,
+                            fd_set *writefds,
+                            fd_set *exceptfds,
+                            struct timeval *timeout))
+{
+        int i;
+        int ret;
+        int saved_errno;
+        sigset_t sigset;
+        struct sigaction new_action;
+
+        saved_errno = errno;
+        for (i=1; i<_NSIG; i++) {
+                sigemptyset(&sigset);
+                new_action.sa_mask = sigset;
+                new_action.sa_flags = SA_SIGINFO;
+                new_action.sa_sigaction = smbw_sigaction_handler;
+
+                if (sigaction(i, &new_action, &user_action[i]) < 0) {
+                        if (errno != EINVAL) {
+                                return -1;
+                        }
+                }
+        }
+        errno = saved_errno;
+
+        ret = (* select_fn)(n, readfds, writefds, exceptfds, timeout);
+        saved_errno = errno;
+
+        for (i=0; i<_NSIG; i++) {
+                (void) sigaction(i, &user_action[i], NULL);
+        }
+
+        errno = saved_errno;
+        return ret;
+}
+
+int
+select(int n,
+       fd_set *readfds,
+       fd_set *writefds,
+       fd_set *exceptfds,
+       struct timeval *timeout)
+{
+        check_init("select");
+
+        return do_select(n, readfds, writefds, exceptfds,
+                         timeout, smbw_libc.select);
+}
+
+int
+_select(int n,
+        fd_set *readfds,
+        fd_set *writefds,
+        fd_set *exceptfds,
+        struct timeval *timeout)
+{
+        check_init("_select");
+
+        return do_select(n, readfds, writefds, exceptfds,
+                         timeout, smbw_libc._select);
+}
+
+int
+__select(int n,
+         fd_set *readfds,
+         fd_set *writefds,
+         fd_set *exceptfds,
+         struct timeval *timeout)
+{
+        check_init("__select");
+
+        return do_select(n, readfds, writefds, exceptfds,
+                         timeout, smbw_libc.__select);
+}
+
+#endif