the guts of the smbwrapper code. I may change the layout of this at

some stage.
(This used to be commit 3f34a3cac817de19d227c36bc792db8b2c3798f9)

1 files changed, 1005 insertions, 0 deletions

diff --git a/source3/smbwrapper/smbw.c b/source3/smbwrapper/smbw.c
new file mode 100644
index 00000000000..c0c3ac86af6
--- /dev/null
+++ b/source3/smbwrapper/smbw.c
@@ -0,0 +1,1005 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 2.0
+   SMB wrapper functions
+   Copyright (C) Andrew Tridgell 1998
+   
+   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.
+*/
+
+#include "includes.h"
+#include "smbw.h"
+#include "wrapper.h"
+
+static pstring smb_cwd;
+
+struct smbw_server {
+	struct smbw_server *next, *prev;
+	struct cli_state cli;
+	char *server_name;
+	char *share_name;
+};
+
+struct smbw_file {
+	struct smbw_file *next, *prev;
+	int cli_fd, fd;
+	char *fname;
+	off_t offset;
+	struct smbw_server *srv;
+};
+
+struct smbw_dir {
+	struct smbw_dir *next, *prev;
+	int fd;
+	int offset, count, malloced;
+	struct smbw_server *srv;
+	struct file_info *list;
+};
+
+static struct smbw_file *smbw_files;
+static struct smbw_dir *smbw_dirs;
+static struct smbw_server *smbw_srvs;
+
+static struct bitmap *file_bmap;
+static pstring local_machine;
+extern int DEBUGLEVEL;
+
+/***************************************************** 
+initialise structures
+*******************************************************/
+void smbw_init(void)
+{
+	extern BOOL in_client;
+	static int initialised;
+	static pstring servicesf = CONFIGFILE;
+	extern FILE *dbf;
+	char *p;
+
+	if (initialised) return;
+	initialised = 1;
+
+	DEBUGLEVEL = 0;
+	setup_logging("smbw",True);
+
+	dbf = stderr;
+
+	file_bmap = bitmap_allocate(SMBW_MAX_OPEN);
+	if (!file_bmap) {
+		exit(1);
+	}
+
+	charset_initialise();
+
+	in_client = True;
+
+	if (!lp_load(servicesf,True,False,False)) {
+		exit(1);
+	}
+
+	get_myname(local_machine,NULL);
+
+	if ((p=getenv("SMBW_DEBUG"))) {
+		DEBUGLEVEL = atoi(p);
+	}
+
+	if ((p=getenv("SMBW_CWD"))) {
+		pstrcpy(smb_cwd, p);
+	} else {
+		sys_getwd(smb_cwd);
+	}
+}
+
+/***************************************************** 
+determine if a file descriptor is a smb one
+*******************************************************/
+BOOL smbw_fd(int fd)
+{
+	return (fd >= SMBW_FD_OFFSET);
+}
+
+
+/***************************************************** 
+remove redundent stuff from a filename
+*******************************************************/
+void clean_fname(char *name)
+{
+	char *p, *p2;
+	int l;
+	int modified = 1;
+
+	if (!name) return;
+
+	while (modified) {
+		modified = 0;
+
+		DEBUG(4,("cleaning %s\n", name));
+
+		if ((p=strstr(name,"/./"))) {
+			modified = 1;
+			while (*p) {
+				p[0] = p[2];
+				p++;
+			}
+		}
+
+		if ((p=strstr(name,"//"))) {
+			modified = 1;
+			while (*p) {
+				p[0] = p[1];
+				p++;
+			}
+		}
+
+		if (strcmp(name,"/../")==0) {
+			modified = 1;
+			name[1] = 0;
+		}
+
+		if ((p=strstr(name,"/../"))) {
+			modified = 1;
+			for (p2=(p>name?p-1:p);p2>name;p2--) {
+				if (p2[0] == '/') break;
+			}
+			while (*p2) {
+				p2[0] = p2[3];
+				p2++;
+			}
+		}
+
+		if (strcmp(name,"/..")==0) {
+			modified = 1;
+			name[1] = 0;
+		}
+
+		l = strlen(name);
+		p = l>=3?(name+l-3):name;
+		if (strcmp(p,"/..")==0) {
+			modified = 1;
+			for (p2=p-1;p2>name;p2--) {
+				if (p2[0] == '/') break;
+			}
+			if (p2==name) {
+				p[0] = '/';
+				p[1] = 0;
+			} else {
+				p2[0] = 0;
+			}
+		}
+
+		l = strlen(name);
+		p = l>=2?(name+l-2):name;
+		if (strcmp(p,"/.")==0) {
+			if (p == name) {
+				p[1] = 0;
+			} else {
+				p[0] = 0;
+			}
+		}
+
+		if (strncmp(p=name,"./",2) == 0) {      
+			modified = 1;
+			do {
+				p[0] = p[2];
+			} while (*p++);
+		}
+
+		l = strlen(p=name);
+		if (l > 1 && p[l-1] == '/') {
+			modified = 1;
+			p[l-1] = 0;
+		}
+	}
+}
+
+
+/***************************************************** 
+parse a smb path into its components. 
+*******************************************************/
+char *smbw_parse_path(char *fname, char **server, char **share, char **path)
+{
+	static fstring rshare, rserver;
+	static pstring rpath, s;
+	char *p, *p2;
+	int len;
+
+	(*server) = rserver;
+	(*share) = rshare;
+	(*path) = rpath;
+
+	if (fname[0] == '/') {
+		pstrcpy(s, fname);
+	} else {
+		slprintf(s,sizeof(s)-1, "%s/%s", smb_cwd, fname);
+	}
+	clean_fname(s);
+
+	DEBUG(4,("cleaned %s (fname=%s cwd=%s)\n", 
+		 s, fname, smb_cwd));
+
+	if (strncmp(s,SMBW_PREFIX,strlen(SMBW_PREFIX))) return s;
+
+	p = s + strlen(SMBW_PREFIX);
+	p2 = strchr(p,'/');
+
+	if (p2) {
+		len = (int)(p2-p);
+	} else {
+		len = strlen(p);
+	}
+
+	strncpy(rserver, p, len);
+	rserver[len] = 0;		
+
+	p = p2;
+	if (!p) {
+		fstrcpy(rshare,"IPC$");
+		fstrcpy(rpath,"");
+		goto ok;
+	}
+
+	p++;
+	p2 = strchr(p,'/');
+
+	if (p2) {
+		len = (int)(p2-p);
+	} else {
+		len = strlen(p);
+	}
+	
+	fstrcpy(rshare, p);
+	rshare[len] = 0;
+
+	p = p2;
+	if (!p) {
+		pstrcpy(rpath,"\\");
+		goto ok;
+	}
+
+	pstrcpy(rpath,p);
+
+	string_sub(rpath, "/", "\\");
+
+ ok:
+	DEBUG(4,("parsed path name=%s cwd=%s [%s] [%s] [%s]\n", 
+		 fname, smb_cwd,
+		 *server, *share, *path));
+
+	return s;
+}
+
+/***************************************************** 
+determine if a path name (possibly relative) is in the 
+smb name space
+*******************************************************/
+BOOL smbw_path(char *path)
+{
+	char *server, *share, *s;
+	char *cwd;
+	cwd = smbw_parse_path(path, &server, &share, &s);
+	return strncmp(cwd,SMBW_PREFIX,strlen(SMBW_PREFIX)) == 0;
+}
+
+/***************************************************** 
+return a unix errno from a SMB error pair
+*******************************************************/
+int smbw_errno(struct smbw_server *srv)
+{
+	int eclass=0, ecode=0;
+	cli_error(&srv->cli, &eclass, &ecode);
+	DEBUG(2,("eclass=%d ecode=%d\n", eclass, ecode));
+	if (eclass == ERRDOS) {
+		switch (ecode) {
+		case ERRbadfile: return ENOENT;
+		case ERRnoaccess: return EPERM;
+		}
+	}
+	return EINVAL;
+}
+
+/***************************************************** 
+return a connection to a server (existing or new)
+*******************************************************/
+struct smbw_server *smbw_server(char *server, char *share)
+{
+	struct smbw_server *srv=NULL;
+	static struct cli_state c;
+	char *username;
+	char *password;
+	char *workgroup;
+	struct nmb_name called, calling;
+
+	username = getenv("SMBW_USER");
+	if (!username) username = getenv("USER");
+	if (!username) username = "guest";
+
+	workgroup = getenv("SMBW_WORKGROUP");
+	if (!workgroup) workgroup = lp_workgroup();
+
+	password = getenv("SMBW_PASSWORD");
+	if (!password) password = "";
+
+	/* try to use an existing connection */
+	for (srv=smbw_srvs;srv;srv=srv->next) {
+		if (strcmp(server,srv->server_name)==0 &&
+		    strcmp(share,srv->share_name)==0) return srv;
+	}
+
+	/* have to open a new connection */
+	if (!cli_initialise(&c) || !cli_connect(&c, server, NULL)) {
+		errno = ENOENT;
+		return NULL;
+	}
+
+	make_nmb_name(&calling, local_machine, 0x0, "");
+	make_nmb_name(&called , server, 0x20, "");
+
+	if (!cli_session_request(&c, &calling, &called)) {
+		cli_shutdown(&c);
+		errno = ENOENT;
+		return NULL;
+	}
+
+	if (!cli_negprot(&c)) {
+		cli_shutdown(&c);
+		errno = ENOENT;
+		return NULL;
+	}
+
+	if (!cli_session_setup(&c, username, 
+			       password, strlen(password),
+			       password, strlen(password),
+			       workgroup)) {
+		cli_shutdown(&c);
+		errno = EPERM;
+		return NULL;
+	}
+
+	if (!cli_send_tconX(&c, share, 
+			    strstr(share,"IPC$")?"IPC":"A:", 
+			    password, strlen(password)+1)) {
+		cli_shutdown(&c);
+		errno = ENOENT;
+		return NULL;
+	}
+
+	srv = (struct smbw_server *)malloc(sizeof(*srv));
+	if (!srv) {
+		errno = ENOMEM;
+		goto failed;
+	}
+
+	ZERO_STRUCTP(srv);
+
+	srv->cli = c;
+
+	srv->server_name = strdup(server);
+	if (!srv->server_name) {
+		errno = ENOMEM;
+		goto failed;
+	}
+
+	srv->share_name = strdup(share);
+	if (!srv->share_name) {
+		errno = ENOMEM;
+		goto failed;
+	}
+
+	DLIST_ADD(smbw_srvs, srv);
+
+	return srv;
+
+ failed:
+	cli_shutdown(&c);
+	if (!srv) return NULL;
+
+	if (srv->server_name) free(srv->server_name);
+	if (srv->share_name) free(srv->share_name);
+	free(srv);
+	return NULL;
+}
+
+
+/***************************************************** 
+map a fd to a smbw_file structure
+*******************************************************/
+struct smbw_file *smbw_file(int fd)
+{
+	struct smbw_file *file;
+
+	for (file=smbw_files;file;file=file->next) {
+		if (file->fd == fd) return file;
+	}
+	return NULL;
+}
+
+/***************************************************** 
+map a fd to a smbw_dir structure
+*******************************************************/
+struct smbw_dir *smbw_dir(int fd)
+{
+	struct smbw_dir *dir;
+
+	for (dir=smbw_dirs;dir;dir=dir->next) {
+		if (dir->fd == fd) return dir;
+	}
+	return NULL;
+}
+
+/***************************************************** 
+setup basic info in a stat structure
+*******************************************************/
+void smbw_setup_stat(struct stat *st, char *fname, size_t size, int mode)
+{
+	ZERO_STRUCTP(st);
+
+	if (IS_DOS_DIR(mode)) {
+		st->st_mode = SMBW_DIR_MODE;
+	} else {
+		st->st_mode = SMBW_FILE_MODE;
+	}
+
+	st->st_size = size;
+	st->st_blksize = 512;
+	st->st_blocks = (size+511)/512;
+	st->st_uid = getuid();
+	st->st_gid = getgid();
+}
+
+/***************************************************** 
+free a smbw_dir structure and all entries
+*******************************************************/
+static void free_dir(struct smbw_dir *dir)
+{
+	if (dir->list) {
+		free(dir->list);
+	}
+	ZERO_STRUCTP(dir);
+	free(dir);
+}
+
+
+static struct smbw_dir *cur_dir;
+
+/***************************************************** 
+add a entry to a directory listing
+*******************************************************/
+void smbw_dir_add(struct file_info *finfo)
+{
+	DEBUG(2,("%s\n", finfo->name));
+
+	if (cur_dir->malloced == cur_dir->count) {
+		cur_dir->list = (struct file_info *)Realloc(cur_dir->list, 
+							    sizeof(cur_dir->list[0])*
+							    (cur_dir->count+100));
+		if (!cur_dir->list) {
+			/* oops */
+			return;
+		}
+		cur_dir->malloced += 100;
+	}
+
+	cur_dir->list[cur_dir->count] = *finfo;
+	cur_dir->count++;
+}
+
+/***************************************************** 
+open a directory on the server
+*******************************************************/
+int smbw_dir_open(const char *fname1, int flags)
+{
+	char *fname = strdup(fname1);
+	char *server, *share, *path;
+	struct smbw_server *srv=NULL;
+	struct smbw_dir *dir=NULL;
+	pstring mask;
+	int fd;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	if (!fname) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	smbw_init();
+
+	/* work out what server they are after */
+	smbw_parse_path(fname, &server, &share, &path);
+
+	/* get a connection to the server */
+	srv = smbw_server(server, share);
+	if (!srv) {
+		/* smbw_server sets errno */
+		goto failed;
+	}
+
+	dir = (struct smbw_dir *)malloc(sizeof(*dir));
+	if (!dir) {
+		errno = ENOMEM;
+		goto failed;
+	}
+
+	ZERO_STRUCTP(dir);
+
+	cur_dir = dir;
+
+	slprintf(mask, sizeof(mask)-1, "%s\\*", path);
+	string_sub(mask,"\\\\","\\");
+
+	if (cli_list(&srv->cli, mask, aHIDDEN|aSYSTEM|aDIR, smbw_dir_add) <= 0) {
+		errno = smbw_errno(srv);
+		goto failed;
+	}
+
+	cur_dir = NULL;
+	
+	fd = bitmap_find(file_bmap, 0);
+	if (fd == -1) {
+		errno = EMFILE;
+		goto failed;
+	}
+
+	DLIST_ADD(smbw_dirs, dir);
+	
+	bitmap_set(file_bmap, fd);
+
+	dir->fd = fd + SMBW_FD_OFFSET;
+
+	return dir->fd;
+
+ failed:
+	if (dir) {
+		free_dir(dir);
+	}
+	if (fname) free(fname);
+
+	return -1;
+}
+
+
+/***************************************************** 
+a wrapper for open()
+*******************************************************/
+int smbw_open(const char *fname1, int flags, mode_t mode)
+{
+	char *fname = strdup(fname1);
+	char *server, *share, *path;
+	struct smbw_server *srv=NULL;
+	int eno, fd = -1;
+	struct smbw_file *file=NULL;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	if (!fname) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	smbw_init();
+
+	/* work out what server they are after */
+	smbw_parse_path(fname, &server, &share, &path);
+
+	/* get a connection to the server */
+	srv = smbw_server(server, share);
+	if (!srv) {
+		/* smbw_server sets errno */
+		goto failed;
+	}
+
+	fd = cli_open(&srv->cli, path, flags, DENY_NONE);
+	if (fd == -1) {
+		if (fname) free(fname);
+		/* it might be a directory. Maybe we should use chkpath? */
+		return smbw_dir_open(fname1, flags);
+	}
+	if (fd == -1) {
+		errno = eno;
+		goto failed;
+	}
+
+	file = (struct smbw_file *)malloc(sizeof(*file));
+	if (!file) {
+		errno = ENOMEM;
+		goto failed;
+	}
+
+	ZERO_STRUCTP(file);
+
+	file->cli_fd = fd;
+	file->fname = strdup(path);
+	if (!file->fname) {
+		errno = ENOMEM;
+		goto failed;
+	}
+	file->srv = srv;
+	file->fd = bitmap_find(file_bmap, 0);
+
+	if (file->fd == -1) {
+		errno = EMFILE;
+		goto failed;
+	}
+
+	bitmap_set(file_bmap, file->fd);
+
+	file->fd += SMBW_FD_OFFSET;
+
+	DLIST_ADD(smbw_files, file);
+
+	DEBUG(2,("opened %s\n", fname1));
+
+	free(fname);
+
+	return file->fd;
+
+ failed:
+	if (fname) {
+		free(fname);
+	}
+	if (fd != -1) {
+		cli_close(&srv->cli, fd);
+	}
+	if (file) {
+		if (file->fname) {
+			free(file->fname);
+		}
+		free(file);
+	}
+	return -1;
+}
+
+
+/***************************************************** 
+a wrapper for fstat() on a directory
+*******************************************************/
+int smbw_dir_fstat(int fd, struct stat *st)
+{
+	struct smbw_dir *dir;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	dir = smbw_dir(fd);
+	if (!dir) {
+		errno = EBADF;
+		return -1;
+	}
+
+	ZERO_STRUCTP(st);
+
+	smbw_setup_stat(st, "", dir->count*sizeof(struct dirent), aDIR);
+
+	return 0;
+}
+
+/***************************************************** 
+a wrapper for fstat()
+*******************************************************/
+int smbw_fstat(int fd, struct stat *st)
+{
+	struct smbw_file *file;
+	time_t c_time, a_time, m_time;
+	uint32 size;
+	int mode;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	file = smbw_file(fd);
+	if (!file) {
+		return smbw_dir_fstat(fd, st);
+	}
+
+	DEBUG(4,("%s - qfileinfo\n", __FUNCTION__));
+
+	if (!cli_qfileinfo(&file->srv->cli, file->cli_fd, 
+			   &c_time, &a_time, &m_time, &size, &mode)) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	smbw_setup_stat(st, file->fname, size, mode);
+
+	st->st_atime = a_time;
+	st->st_ctime = c_time;
+	st->st_mtime = m_time;
+
+	DEBUG(4,("%s - OK\n", __FUNCTION__));
+
+	return 0;
+}
+
+/***************************************************** 
+a wrapper for stat()
+*******************************************************/
+int smbw_stat(char *fname1, struct stat *st)
+{
+	struct smbw_server *srv;
+	char *server, *share, *path;
+	char *fname = strdup(fname1);
+	time_t c_time, a_time, m_time;
+	uint32 size;
+	int mode;
+
+	DEBUG(4,("%s (%s)\n", __FUNCTION__, fname1));
+
+	if (!fname) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	smbw_init();
+
+	/* work out what server they are after */
+	smbw_parse_path(fname, &server, &share, &path);
+
+	/* get a connection to the server */
+	srv = smbw_server(server, share);
+	if (!srv) {
+		/* smbw_server sets errno */
+		goto failed;
+	}
+
+	if (!cli_qpathinfo(&srv->cli, path, 
+			   &c_time, &a_time, &m_time, &size, &mode)) {
+		errno = smbw_errno(srv);
+		goto failed;
+	}
+
+	smbw_setup_stat(st, path, size, mode);
+
+	st->st_atime = a_time;
+	st->st_ctime = c_time;
+	st->st_mtime = m_time;
+
+	return 0;
+
+ failed:
+	if (fname) free(fname);
+	return -1;
+}
+
+/***************************************************** 
+a wrapper for read()
+*******************************************************/
+ssize_t smbw_read(int fd, void *buf, size_t count)
+{
+	struct smbw_file *file;
+	int ret;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	file = smbw_file(fd);
+	if (!file) {
+		DEBUG(3,("bad fd in read\n"));
+		errno = EBADF;
+		return -1;
+	}
+	
+	ret = cli_read(&file->srv->cli, file->cli_fd, buf, file->offset, count);
+
+	if (ret == -1) {
+		errno = smbw_errno(file->srv);
+		return -1;
+	}
+
+	file->offset += ret;
+
+	return ret;
+}
+
+/***************************************************** 
+a wrapper for write()
+*******************************************************/
+ssize_t smbw_write(int fd, void *buf, size_t count)
+{
+	struct smbw_file *file;
+	int ret;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	file = smbw_file(fd);
+	if (!file) {
+		DEBUG(3,("bad fd in read\n"));
+		errno = EBADF;
+		return -1;
+	}
+	
+	ret = cli_write(&file->srv->cli, file->cli_fd, buf, file->offset, count);
+
+	if (ret == -1) {
+		errno = smbw_errno(file->srv);
+		return -1;
+	}
+
+	file->offset += ret;
+
+	return ret;
+}
+
+/***************************************************** 
+close a directory handle
+*******************************************************/
+int smbw_dir_close(int fd)
+{
+	struct smbw_dir *dir;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	dir = smbw_dir(fd);
+	if (!dir) {
+		DEBUG(4,("%s(%d)\n", __FUNCTION__, __LINE__));
+		errno = EBADF;
+		return -1;
+	}
+
+	bitmap_clear(file_bmap, dir->fd - SMBW_FD_OFFSET);
+	
+	DLIST_REMOVE(smbw_dirs, dir);
+	
+	free_dir(dir);
+
+	return 0;
+}
+
+/***************************************************** 
+a wrapper for close()
+*******************************************************/
+int smbw_close(int fd)
+{
+	struct smbw_file *file;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	file = smbw_file(fd);
+	if (!file) {
+		return smbw_dir_close(fd);
+	}
+	
+	if (!cli_close(&file->srv->cli, file->cli_fd)) {
+		errno = smbw_errno(file->srv);
+		return -1;
+	}
+
+
+	bitmap_clear(file_bmap, file->fd - SMBW_FD_OFFSET);
+	
+	DLIST_REMOVE(smbw_files, file);
+
+	free(file->fname);
+	ZERO_STRUCTP(file);
+	free(file);
+
+	return 0;
+}
+
+
+/***************************************************** 
+a wrapper for fcntl()
+*******************************************************/
+int smbw_fcntl(int fd, int cmd, long arg)
+{
+	DEBUG(4,("%s\n", __FUNCTION__));
+	return 0;
+}
+
+
+/***************************************************** 
+a wrapper for getdents()
+*******************************************************/
+int smbw_getdents(unsigned int fd, struct dirent *dirp, int count)
+{
+	struct smbw_dir *dir;
+	int n=0;
+
+	DEBUG(4,("%s\n", __FUNCTION__));
+
+	dir = smbw_dir(fd);
+	if (!dir) {
+		errno = EBADF;
+		return -1;
+	}
+	
+	while (count>=sizeof(*dirp) && (dir->offset < dir->count)) {
+		dirp->d_ino = dir->offset + 0x10000;
+		dirp->d_off = (dir->offset+1)*sizeof(*dirp);
+		dirp->d_reclen = sizeof(*dirp);
+		/* what's going on with the -1 here? maybe d_type isn't really there? */
+		safe_strcpy(&dirp->d_name[-1], dir->list[dir->offset].name, 
+			    sizeof(dirp->d_name)-1);
+		dir->offset++;
+		count -= dirp->d_reclen;
+		dirp++;
+		n++;
+	}
+
+	return n*sizeof(*dirp);
+}
+
+
+/***************************************************** 
+a wrapper for access()
+*******************************************************/
+int smbw_access(char *name, int mode)
+{
+	struct stat st;
+	/* how do we map this properly ?? */
+	return smbw_stat(name, &st) == 0;
+}
+
+
+/***************************************************** 
+a wrapper for chdir()
+*******************************************************/
+int smbw_chdir(char *name)
+{
+	struct smbw_server *srv;
+	char *server, *share, *path;
+	int mode = aDIR;
+	char *cwd;
+
+	DEBUG(4,("%s (%s)\n", __FUNCTION__, name));
+
+	if (!name) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	smbw_init();
+
+	DEBUG(2,("parsing\n"));
+
+	/* work out what server they are after */
+	cwd = smbw_parse_path(name, &server, &share, &path);
+
+	DEBUG(2,("parsed\n"));
+
+	if (strncmp(cwd,SMBW_PREFIX,strlen(SMBW_PREFIX))) {
+		if (real_chdir(cwd) == 0) {
+			pstrcpy(smb_cwd, cwd);
+			setenv("SMB_CWD", smb_cwd, 1);
+			return 0;
+		}
+		errno = ENOENT;
+		return -1;
+	}
+
+	DEBUG(2,("doing server\n"));
+
+	/* get a connection to the server */
+	srv = smbw_server(server, share);
+	if (!srv) {
+		/* smbw_server sets errno */
+		return -1;
+	}
+
+	DEBUG(2,("doing qpathinfo share=%s\n", share));
+
+	if (strcmp(share,"IPC$") &&
+	    !cli_qpathinfo(&srv->cli, path, 
+			   NULL, NULL, NULL, NULL, &mode)) {
+		errno = smbw_errno(srv);
+		return -1;
+	}
+
+	if (!(mode & aDIR)) {
+		errno = ENOTDIR;
+		return -1;
+	}
+
+	pstrcpy(smb_cwd, cwd);
+	setenv("SMB_CWD", smb_cwd, 1);
+
+	return 0;
+}
+