Add cli_posix_readlink() and a torture test for it.
[ira/wip.git] / source3 / libsmb / clifile.c
index 91f13a79acc6cb74fc2521a301a27d02d1eab8eb..187fcdf62519b55200cb0dca10b9ebded250b061 100644 (file)
@@ -2,7 +2,7 @@
    Unix SMB/CIFS implementation.
    client file operations
    Copyright (C) Andrew Tridgell 1994-1998
-   Copyright (C) Jeremy Allison 2001-2002
+   Copyright (C) Jeremy Allison 2001-2009
    
    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
 
 #include "includes.h"
 
+/***********************************************************
+ Common function for pushing stings, used by smb_bytes_push_str()
+ and trans_bytes_push_str(). Only difference is the align_odd
+ parameter setting.
+***********************************************************/
+
+static uint8_t *internal_bytes_push_str(uint8_t *buf, bool ucs2,
+                               const char *str, size_t str_len,
+                               bool align_odd,
+                               size_t *pconverted_size)
+{
+       size_t buflen;
+       char *converted;
+       size_t converted_size;
+
+       if (buf == NULL) {
+               return NULL;
+       }
+
+       buflen = talloc_get_size(buf);
+
+       if (align_odd && ucs2 && (buflen % 2 == 0)) {
+               /*
+                * We're pushing into an SMB buffer, align odd
+                */
+               buf = TALLOC_REALLOC_ARRAY(NULL, buf, uint8_t, buflen + 1);
+               if (buf == NULL) {
+                       return NULL;
+               }
+               buf[buflen] = '\0';
+               buflen += 1;
+       }
+
+       if (!convert_string_talloc(talloc_tos(), CH_UNIX,
+                                  ucs2 ? CH_UTF16LE : CH_DOS,
+                                  str, str_len, &converted,
+                                  &converted_size, true)) {
+               return NULL;
+       }
+
+       buf = TALLOC_REALLOC_ARRAY(NULL, buf, uint8_t,
+                                  buflen + converted_size);
+       if (buf == NULL) {
+               TALLOC_FREE(converted);
+               return NULL;
+       }
+
+       memcpy(buf + buflen, converted, converted_size);
+
+       TALLOC_FREE(converted);
+
+       if (pconverted_size) {
+               *pconverted_size = converted_size;
+       }
+
+       return buf;
+}
+
+/***********************************************************
+ Push a string into an SMB buffer, with odd byte alignment
+ if it's a UCS2 string.
+***********************************************************/
+
+uint8_t *smb_bytes_push_str(uint8_t *buf, bool ucs2,
+                           const char *str, size_t str_len,
+                           size_t *pconverted_size)
+{
+       return internal_bytes_push_str(buf, ucs2, str, str_len,
+                       true, pconverted_size);
+}
+
+/***********************************************************
+ Same as smb_bytes_push_str(), but without the odd byte
+ align for ucs2 (we're pushing into a param or data block).
+ static for now, although this will probably change when
+ other modules use async trans calls.
+***********************************************************/
+
+static uint8_t *trans2_bytes_push_str(uint8_t *buf, bool ucs2,
+                           const char *str, size_t str_len,
+                           size_t *pconverted_size)
+{
+       return internal_bytes_push_str(buf, ucs2, str, str_len,
+                       false, pconverted_size);
+}
+
 /****************************************************************************
  Hard/Symlink a file (UNIX extensions).
  Creates new name (sym)linked to oldname.
 ****************************************************************************/
 
-static bool cli_link_internal(struct cli_state *cli, const char *oldname, const char *newname, bool hard_link)
+struct link_state {
+       uint16_t setup;
+       uint8_t *param;
+       uint8_t *data;
+};
+
+static void cli_posix_link_internal_done(struct tevent_req *subreq)
 {
-       unsigned int data_len = 0;
-       unsigned int param_len = 0;
-       uint16 setup = TRANSACT2_SETPATHINFO;
-       char *param;
-       char *data;
-       char *rparam=NULL, *rdata=NULL;
-       char *p;
-       size_t oldlen = 2*(strlen(oldname)+1);
-       size_t newlen = 2*(strlen(newname)+1);
+       struct tevent_req *req = tevent_req_callback_data(
+                               subreq, struct tevent_req);
+       struct link_state *state = tevent_req_data(req, struct link_state);
+       NTSTATUS status;
+
+       status = cli_trans_recv(subreq, state, NULL, NULL, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       tevent_req_done(req);
+}
 
-       param = SMB_MALLOC_ARRAY(char, 6+newlen+2);
+static struct tevent_req *cli_posix_link_internal_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *oldname,
+                                       const char *newname,
+                                       bool hardlink)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct link_state *state = NULL;
 
-       if (!param) {
-               return false;
+       req = tevent_req_create(mem_ctx, &state, struct link_state);
+       if (req == NULL) {
+               return NULL;
        }
 
-       data = SMB_MALLOC_ARRAY(char, oldlen+2);
+       /* Setup setup word. */
+       SSVAL(&state->setup, 0, TRANSACT2_SETPATHINFO);
 
-       if (!data) {
-               SAFE_FREE(param);
-               return false;
+       /* Setup param array. */
+       state->param = talloc_array(state, uint8_t, 6);
+       if (tevent_req_nomem(state->param, req)) {
+               return tevent_req_post(req, ev);
        }
+       memset(state->param, '\0', 6);
+       SSVAL(state->param,0,hardlink ? SMB_SET_FILE_UNIX_HLINK : SMB_SET_FILE_UNIX_LINK);
 
-       SSVAL(param,0,hard_link ? SMB_SET_FILE_UNIX_HLINK : SMB_SET_FILE_UNIX_LINK);
-       SIVAL(param,2,0);
-       p = &param[6];
+       state->param = trans2_bytes_push_str(state->param, cli_ucs2(cli), newname,
+                                  strlen(newname)+1, NULL);
 
-       p += clistr_push(cli, p, newname, newlen, STR_TERMINATE);
-       param_len = PTR_DIFF(p, param);
+       if (tevent_req_nomem(state->param, req)) {
+               return tevent_req_post(req, ev);
+       }
 
-       p = data;
-       p += clistr_push(cli, p, oldname, oldlen, STR_TERMINATE);
-       data_len = PTR_DIFF(p, data);
+       /* Setup data array. */
+       state->data = talloc_array(state, uint8_t, 0);
+       if (tevent_req_nomem(state->data, req)) {
+               return tevent_req_post(req, ev);
+       }
+       state->data = trans2_bytes_push_str(state->data, cli_ucs2(cli), oldname,
+                                  strlen(oldname)+1, NULL);
 
-       if (!cli_send_trans(cli, SMBtrans2,
-                       NULL,                        /* name */
-                       -1, 0,                          /* fid, flags */
-                       &setup, 1, 0,                   /* setup, length, max */
-                       param, param_len, 2,            /* param, length, max */
-                       data,  data_len, cli->max_xmit /* data, length, max */
-                       )) {
-               SAFE_FREE(data);
-               SAFE_FREE(param);
-               return false;
+       subreq = cli_trans_send(state,                  /* mem ctx. */
+                               ev,                     /* event ctx. */
+                               cli,                    /* cli_state. */
+                               SMBtrans2,              /* cmd. */
+                               NULL,                   /* pipe name. */
+                               -1,                     /* fid. */
+                               0,                      /* function. */
+                               0,                      /* flags. */
+                               &state->setup,          /* setup. */
+                               1,                      /* num setup uint16_t words. */
+                               0,                      /* max returned setup. */
+                               state->param,           /* param. */
+                               talloc_get_size(state->param),  /* num param. */
+                               2,                      /* max returned param. */
+                               state->data,            /* data. */
+                               talloc_get_size(state->data),   /* num data. */
+                               0);                     /* max returned data. */
+
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
        }
+       tevent_req_set_callback(subreq, cli_posix_link_internal_done, req);
+       return req;
+}
 
-       SAFE_FREE(data);
-       SAFE_FREE(param);
+/****************************************************************************
+ Symlink a file (UNIX extensions).
+****************************************************************************/
 
-       if (!cli_receive_trans(cli, SMBtrans2,
-                       &rparam, &param_len,
-                       &rdata, &data_len)) {
-                       return false;
+struct tevent_req *cli_posix_symlink_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *oldname,
+                                       const char *newname)
+{
+       return cli_posix_link_internal_send(mem_ctx, ev, cli,
+                       oldname, newname, false);
+}
+
+NTSTATUS cli_posix_symlink_recv(struct tevent_req *req)
+{
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
        }
+       return NT_STATUS_OK;
+}
 
-       SAFE_FREE(data);
-       SAFE_FREE(param);
-       SAFE_FREE(rdata);
-       SAFE_FREE(rparam);
+NTSTATUS cli_posix_symlink(struct cli_state *cli,
+                       const char *oldname,
+                       const char *newname)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
 
-       return true;
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_posix_symlink_send(frame,
+                               ev,
+                               cli,
+                               oldname,
+                               newname);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_posix_symlink_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
+}
+
+/****************************************************************************
+ Read a POSIX symlink.
+****************************************************************************/
+
+struct readlink_state {
+       uint16_t setup;
+       uint8_t *param;
+       uint8_t *data;
+       uint32_t num_data;
+};
+
+static void cli_posix_readlink_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+                               subreq, struct tevent_req);
+       struct readlink_state *state = tevent_req_data(req, struct readlink_state);
+       NTSTATUS status;
+
+       status = cli_trans_recv(subreq, state, NULL, NULL, NULL, NULL,
+                       &state->data, &state->num_data);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       if (state->num_data == 0) {
+               tevent_req_nterror(req, NT_STATUS_DATA_ERROR);
+               return;
+       }
+       if (state->data[state->num_data-1] != '\0') {
+               tevent_req_nterror(req, NT_STATUS_DATA_ERROR);
+               return;
+       }
+       tevent_req_done(req);
+}
+
+struct tevent_req *cli_posix_readlink_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *fname,
+                                       size_t len)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct readlink_state *state = NULL;
+       uint32_t maxbytelen = (uint32_t)(cli_ucs2(cli) ? len*3 : len);
+
+       if (maxbytelen < len) {
+               return NULL;
+       }
+
+       req = tevent_req_create(mem_ctx, &state, struct readlink_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       /* Setup setup word. */
+       SSVAL(&state->setup, 0, TRANSACT2_QPATHINFO);
+
+       /* Setup param array. */
+       state->param = talloc_array(state, uint8_t, 6);
+       if (tevent_req_nomem(state->param, req)) {
+               return tevent_req_post(req, ev);
+       }
+       memset(state->param, '\0', 6);
+       SSVAL(state->param,0,SMB_QUERY_FILE_UNIX_LINK);
+
+       state->param = trans2_bytes_push_str(state->param, cli_ucs2(cli), fname,
+                                  strlen(fname)+1, NULL);
+
+       if (tevent_req_nomem(state->param, req)) {
+               return tevent_req_post(req, ev);
+       }
+
+       subreq = cli_trans_send(state,                  /* mem ctx. */
+                               ev,                     /* event ctx. */
+                               cli,                    /* cli_state. */
+                               SMBtrans2,              /* cmd. */
+                               NULL,                   /* pipe name. */
+                               -1,                     /* fid. */
+                               0,                      /* function. */
+                               0,                      /* flags. */
+                               &state->setup,          /* setup. */
+                               1,                      /* num setup uint16_t words. */
+                               0,                      /* max returned setup. */
+                               state->param,           /* param. */
+                               talloc_get_size(state->param),  /* num param. */
+                               2,                      /* max returned param. */
+                               NULL,                   /* data. */
+                               0,                      /* num data. */
+                               maxbytelen);            /* max returned data. */
+
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_posix_readlink_done, req);
+       return req;
+}
+
+NTSTATUS cli_posix_readlink_recv(struct tevent_req *req, struct cli_state *cli,
+                               char *retpath, size_t len)
+{
+       NTSTATUS status;
+       char *converted = NULL;
+       size_t converted_size = 0;
+       struct readlink_state *state = tevent_req_data(req, struct readlink_state);
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       /* The returned data is a pushed string, not raw data. */
+       if (!convert_string_talloc(state,
+                               cli_ucs2(cli) ? CH_UTF16LE : CH_DOS, 
+                               CH_UNIX,
+                               state->data,
+                               state->num_data,
+                               &converted,
+                               &converted_size,
+                               true)) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       len = MIN(len,converted_size);
+       if (len == 0) {
+               return NT_STATUS_DATA_ERROR;
+       }
+       memcpy(retpath, converted, len);
+       return NT_STATUS_OK;
+}
+
+NTSTATUS cli_posix_readlink(struct cli_state *cli, const char *fname,
+                               char *linkpath, size_t len)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       /* Len is in bytes, we need it in UCS2 units. */
+       if (2*len < len) {
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       req = cli_posix_readlink_send(frame,
+                               ev,
+                               cli,
+                               fname,
+                               len);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_posix_readlink_recv(req, cli, linkpath, len);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
+}
+
+
+/****************************************************************************
+ Hard link a file (UNIX extensions).
+****************************************************************************/
+
+struct tevent_req *cli_posix_hardlink_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *oldname,
+                                       const char *newname)
+{
+       return cli_posix_link_internal_send(mem_ctx, ev, cli,
+                       oldname, newname, true);
+}
+
+NTSTATUS cli_posix_hardlink_recv(struct tevent_req *req)
+{
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       return NT_STATUS_OK;
+}
+
+NTSTATUS cli_posix_hardlink(struct cli_state *cli,
+                       const char *oldname,
+                       const char *newname)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_posix_hardlink_send(frame,
+                               ev,
+                               cli,
+                               oldname,
+                               newname);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_posix_hardlink_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  Map standard UNIX permissions onto wire representations.
 ****************************************************************************/
 
-uint32 unix_perms_to_wire(mode_t perms)
+uint32_t unix_perms_to_wire(mode_t perms)
 {
         unsigned int ret = 0;
 
@@ -123,7 +559,7 @@ uint32 unix_perms_to_wire(mode_t perms)
  Map wire permissions to standard UNIX.
 ****************************************************************************/
 
-mode_t wire_perms_to_unix(uint32 perms)
+mode_t wire_perms_to_unix(uint32_t perms)
 {
         mode_t ret = (mode_t)0;
 
@@ -152,7 +588,7 @@ mode_t wire_perms_to_unix(uint32 perms)
  Return the file type from the wire filetype for UNIX extensions.
 ****************************************************************************/
 
-static mode_t unix_filetype_from_wire(uint32 wire_type)
+static mode_t unix_filetype_from_wire(uint32_t wire_type)
 {
        switch (wire_type) {
                case UNIX_TYPE_FILE:
@@ -192,7 +628,7 @@ bool cli_unix_getfacl(struct cli_state *cli, const char *name, size_t *prb_size,
 {
        unsigned int param_len = 0;
        unsigned int data_len = 0;
-       uint16 setup = TRANSACT2_QPATHINFO;
+       uint16_t setup = TRANSACT2_QPATHINFO;
        char *param;
        size_t nlen = 2*(strlen(name)+1);
        char *rparam=NULL, *rdata=NULL;
@@ -250,7 +686,7 @@ bool cli_unix_stat(struct cli_state *cli, const char *name, SMB_STRUCT_STAT *sbu
 {
        unsigned int param_len = 0;
        unsigned int data_len = 0;
-       uint16 setup = TRANSACT2_QPATHINFO;
+       uint16_t setup = TRANSACT2_QPATHINFO;
        char *param;
        size_t nlen = 2*(strlen(name)+1);
        char *rparam=NULL, *rdata=NULL;
@@ -294,65 +730,46 @@ bool cli_unix_stat(struct cli_state *cli, const char *name, SMB_STRUCT_STAT *sbu
                return false;
        }
 
-       sbuf->st_size = IVAL2_TO_SMB_BIG_UINT(rdata,0);     /* total size, in bytes */
-       sbuf->st_blocks = IVAL2_TO_SMB_BIG_UINT(rdata,8);   /* number of blocks allocated */
+       sbuf->st_ex_size = IVAL2_TO_SMB_BIG_UINT(rdata,0);     /* total size, in bytes */
+       sbuf->st_ex_blocks = IVAL2_TO_SMB_BIG_UINT(rdata,8);   /* number of blocks allocated */
 #if defined (HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
-       sbuf->st_blocks /= STAT_ST_BLOCKSIZE;
+       sbuf->st_ex_blocks /= STAT_ST_BLOCKSIZE;
 #else
        /* assume 512 byte blocks */
-       sbuf->st_blocks /= 512;
+       sbuf->st_ex_blocks /= 512;
 #endif
-       set_ctimespec(sbuf, interpret_long_date(rdata + 16));    /* time of last change */
-       set_atimespec(sbuf, interpret_long_date(rdata + 24));    /* time of last access */
-       set_mtimespec(sbuf, interpret_long_date(rdata + 32));    /* time of last modification */
+       sbuf->st_ex_ctime = interpret_long_date(rdata + 16);    /* time of last change */
+       sbuf->st_ex_atime = interpret_long_date(rdata + 24);    /* time of last access */
+       sbuf->st_ex_mtime = interpret_long_date(rdata + 32);    /* time of last modification */
 
-       sbuf->st_uid = (uid_t) IVAL(rdata,40);      /* user ID of owner */
-       sbuf->st_gid = (gid_t) IVAL(rdata,48);      /* group ID of owner */
-       sbuf->st_mode |= unix_filetype_from_wire(IVAL(rdata, 56));
+       sbuf->st_ex_uid = (uid_t) IVAL(rdata,40);      /* user ID of owner */
+       sbuf->st_ex_gid = (gid_t) IVAL(rdata,48);      /* group ID of owner */
+       sbuf->st_ex_mode |= unix_filetype_from_wire(IVAL(rdata, 56));
 #if defined(HAVE_MAKEDEV)
-       {
-               uint32 dev_major = IVAL(rdata,60);
-               uint32 dev_minor = IVAL(rdata,68);
-               sbuf->st_rdev = makedev(dev_major, dev_minor);
-       }
-#endif
-       sbuf->st_ino = (SMB_INO_T)IVAL2_TO_SMB_BIG_UINT(rdata,76);      /* inode */
-       sbuf->st_mode |= wire_perms_to_unix(IVAL(rdata,84));     /* protection */
-       sbuf->st_nlink = IVAL(rdata,92);    /* number of hard links */
-
-       SAFE_FREE(rdata);
-       SAFE_FREE(rparam);
-
-       return true;
-}
-
-/****************************************************************************
- Symlink a file (UNIX extensions).
-****************************************************************************/
-
-bool cli_unix_symlink(struct cli_state *cli, const char *oldname, const char *newname)
-{
-       return cli_link_internal(cli, oldname, newname, False);
-}
+       {
+               uint32_t dev_major = IVAL(rdata,60);
+               uint32_t dev_minor = IVAL(rdata,68);
+               sbuf->st_ex_rdev = makedev(dev_major, dev_minor);
+       }
+#endif
+       sbuf->st_ex_ino = (SMB_INO_T)IVAL2_TO_SMB_BIG_UINT(rdata,76);      /* inode */
+       sbuf->st_ex_mode |= wire_perms_to_unix(IVAL(rdata,84));     /* protection */
+       sbuf->st_ex_nlink = IVAL(rdata,92);    /* number of hard links */
 
-/****************************************************************************
- Hard a file (UNIX extensions).
-****************************************************************************/
+       SAFE_FREE(rdata);
+       SAFE_FREE(rparam);
 
-bool cli_unix_hardlink(struct cli_state *cli, const char *oldname, const char *newname)
-{
-       return cli_link_internal(cli, oldname, newname, True);
+       return true;
 }
-
 /****************************************************************************
  Chmod or chown a file internal (UNIX extensions).
 ****************************************************************************/
 
-static bool cli_unix_chmod_chown_internal(struct cli_state *cli, const char *fname, uint32 mode, uint32 uid, uint32 gid)
+static bool cli_unix_chmod_chown_internal(struct cli_state *cli, const char *fname, uint32_t mode, uint32_t uid, uint32_t gid)
 {
        unsigned int data_len = 0;
        unsigned int param_len = 0;
-       uint16 setup = TRANSACT2_SETPATHINFO;
+       uint16_t setup = TRANSACT2_SETPATHINFO;
        size_t nlen = 2*(strlen(fname)+1);
        char *param;
        char data[100];
@@ -429,254 +846,671 @@ bool cli_unix_chown(struct cli_state *cli, const char *fname, uid_t uid, gid_t g
  Rename a file.
 ****************************************************************************/
 
-bool cli_rename(struct cli_state *cli, const char *fname_src, const char *fname_dst)
+static void cli_rename_done(struct tevent_req *subreq);
+
+struct cli_rename_state {
+       uint16_t vwv[1];
+};
+
+struct tevent_req *cli_rename_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               const char *fname_src,
+                               const char *fname_dst)
 {
-       char *p;
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_rename_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint8_t *bytes = NULL;
 
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+       req = tevent_req_create(mem_ctx, &state, struct cli_rename_state);
+       if (req == NULL) {
+               return NULL;
+       }
 
-       cli_set_message(cli->outbuf,1, 0, true);
+       SSVAL(state->vwv+0, 0, aSYSTEM | aHIDDEN | aDIR);
 
-       SCVAL(cli->outbuf,smb_com,SMBmv);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+       bytes = talloc_array(state, uint8_t, 1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
+       bytes[0] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname_src,
+                                  strlen(fname_src)+1, NULL);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
 
-       SSVAL(cli->outbuf,smb_vwv0,aSYSTEM | aHIDDEN | aDIR);
+       bytes = TALLOC_REALLOC_ARRAY(state, bytes, uint8_t,
+                       talloc_get_size(bytes)+1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname_src,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname_dst,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
+       bytes[talloc_get_size(bytes)-1] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname_dst,
+                                  strlen(fname_dst)+1, NULL);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
 
-       cli_setup_bcc(cli, p);
+       subreq = cli_smb_send(state, ev, cli, SMBmv, additional_flags,
+                             1, state->vwv, talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_rename_done, req);
+       return req;
+}
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return false;
+static void cli_rename_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+                               subreq, struct tevent_req);
+       NTSTATUS status;
+
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
        }
+       tevent_req_done(req);
+}
 
-       if (cli_is_error(cli)) {
-               return false;
+NTSTATUS cli_rename_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
+}
+
+NTSTATUS cli_rename(struct cli_state *cli, const char *fname_src, const char *fname_dst)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
        }
 
-       return true;
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_rename_send(frame, ev, cli, fname_src, fname_dst);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_rename_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  NT Rename a file.
 ****************************************************************************/
 
-bool cli_ntrename(struct cli_state *cli, const char *fname_src, const char *fname_dst)
+static void cli_ntrename_internal_done(struct tevent_req *subreq);
+
+struct cli_ntrename_internal_state {
+       uint16_t vwv[4];
+};
+
+static struct tevent_req *cli_ntrename_internal_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               const char *fname_src,
+                               const char *fname_dst,
+                               uint16_t rename_flag)
 {
-       char *p;
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_ntrename_internal_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint8_t *bytes = NULL;
 
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+       req = tevent_req_create(mem_ctx, &state,
+                               struct cli_ntrename_internal_state);
+       if (req == NULL) {
+               return NULL;
+       }
 
-       cli_set_message(cli->outbuf, 4, 0, true);
+       SSVAL(state->vwv+0, 0 ,aSYSTEM | aHIDDEN | aDIR);
+       SSVAL(state->vwv+1, 0, rename_flag);
 
-       SCVAL(cli->outbuf,smb_com,SMBntrename);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+       bytes = talloc_array(state, uint8_t, 1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
+       bytes[0] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname_src,
+                                  strlen(fname_src)+1, NULL);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
 
-       SSVAL(cli->outbuf,smb_vwv0,aSYSTEM | aHIDDEN | aDIR);
-       SSVAL(cli->outbuf,smb_vwv1, RENAME_FLAG_RENAME);
+       bytes = TALLOC_REALLOC_ARRAY(state, bytes, uint8_t,
+                       talloc_get_size(bytes)+1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname_src,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname_dst,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
+       bytes[talloc_get_size(bytes)-1] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname_dst,
+                                  strlen(fname_dst)+1, NULL);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
 
-       cli_setup_bcc(cli, p);
+       subreq = cli_smb_send(state, ev, cli, SMBntrename, additional_flags,
+                             4, state->vwv, talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_ntrename_internal_done, req);
+       return req;
+}
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return false;
+static void cli_ntrename_internal_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+                               subreq, struct tevent_req);
+       NTSTATUS status;
+
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
        }
+       tevent_req_done(req);
+}
 
-       if (cli_is_error(cli)) {
-               return false;
+static NTSTATUS cli_ntrename_internal_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
+}
+
+struct tevent_req *cli_ntrename_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               const char *fname_src,
+                               const char *fname_dst)
+{
+       return cli_ntrename_internal_send(mem_ctx,
+                                         ev,
+                                         cli,
+                                         fname_src,
+                                         fname_dst,
+                                         RENAME_FLAG_RENAME);
+}
+
+NTSTATUS cli_ntrename_recv(struct tevent_req *req)
+{
+       return cli_ntrename_internal_recv(req);
+}
+
+NTSTATUS cli_ntrename(struct cli_state *cli, const char *fname_src, const char *fname_dst)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
        }
 
-       return true;
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_ntrename_send(frame, ev, cli, fname_src, fname_dst);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_ntrename_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  NT hardlink a file.
 ****************************************************************************/
 
-bool cli_nt_hardlink(struct cli_state *cli, const char *fname_src, const char *fname_dst)
+struct tevent_req *cli_nt_hardlink_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               const char *fname_src,
+                               const char *fname_dst)
+{
+       return cli_ntrename_internal_send(mem_ctx,
+                                         ev,
+                                         cli,
+                                         fname_src,
+                                         fname_dst,
+                                         RENAME_FLAG_HARD_LINK);
+}
+
+NTSTATUS cli_nt_hardlink_recv(struct tevent_req *req)
 {
-       char *p;
+       return cli_ntrename_internal_recv(req);
+}
 
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+NTSTATUS cli_nt_hardlink(struct cli_state *cli, const char *fname_src, const char *fname_dst)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_nt_hardlink_send(frame, ev, cli, fname_src, fname_dst);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_nt_hardlink_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
+}
+
+/****************************************************************************
+ Delete a file.
+****************************************************************************/
+
+static void cli_unlink_done(struct tevent_req *subreq);
+
+struct cli_unlink_state {
+       uint16_t vwv[1];
+};
+
+struct tevent_req *cli_unlink_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               const char *fname,
+                               uint16_t mayhave_attrs)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_unlink_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint8_t *bytes = NULL;
+
+       req = tevent_req_create(mem_ctx, &state, struct cli_unlink_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       SSVAL(state->vwv+0, 0, mayhave_attrs);
+
+       bytes = talloc_array(state, uint8_t, 1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
+       bytes[0] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname,
+                                  strlen(fname)+1, NULL);
+
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
+
+       subreq = cli_smb_send(state, ev, cli, SMBunlink, additional_flags,
+                               1, state->vwv, talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_unlink_done, req);
+       return req;
+}
+
+static void cli_unlink_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       NTSTATUS status;
+
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       tevent_req_done(req);
+}
+
+NTSTATUS cli_unlink_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
+}
+
+NTSTATUS cli_unlink(struct cli_state *cli, const char *fname, uint16_t mayhave_attrs)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_unlink_send(frame, ev, cli, fname, mayhave_attrs);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_unlink_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
+}
 
-       cli_set_message(cli->outbuf, 4, 0, true);
+/****************************************************************************
+ Create a directory.
+****************************************************************************/
 
-       SCVAL(cli->outbuf,smb_com,SMBntrename);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+static void cli_mkdir_done(struct tevent_req *subreq);
 
-       SSVAL(cli->outbuf,smb_vwv0,aSYSTEM | aHIDDEN | aDIR);
-       SSVAL(cli->outbuf,smb_vwv1, RENAME_FLAG_HARD_LINK);
+struct cli_mkdir_state {
+       int dummy;
+};
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname_src,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname_dst,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
+struct tevent_req *cli_mkdir_send(TALLOC_CTX *mem_ctx,
+                                 struct event_context *ev,
+                                 struct cli_state *cli,
+                                 const char *dname)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_mkdir_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint8_t *bytes = NULL;
 
-       cli_setup_bcc(cli, p);
+       req = tevent_req_create(mem_ctx, &state, struct cli_mkdir_state);
+       if (req == NULL) {
+               return NULL;
+       }
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return false;
+       bytes = talloc_array(state, uint8_t, 1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
+       bytes[0] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), dname,
+                                  strlen(dname)+1, NULL);
 
-       if (cli_is_error(cli)) {
-               return false;
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
 
-       return true;
+       subreq = cli_smb_send(state, ev, cli, SMBmkdir, additional_flags,
+                             0, NULL, talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_mkdir_done, req);
+       return req;
 }
 
-/****************************************************************************
- Delete a file.
-****************************************************************************/
-
-bool cli_unlink_full(struct cli_state *cli, const char *fname, uint16 attrs)
+static void cli_mkdir_done(struct tevent_req *subreq)
 {
-       char *p;
-
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       NTSTATUS status;
 
-       cli_set_message(cli->outbuf,1, 0, true);
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       tevent_req_done(req);
+}
 
-       SCVAL(cli->outbuf,smb_com,SMBunlink);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+NTSTATUS cli_mkdir_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
+}
 
-       SSVAL(cli->outbuf,smb_vwv0, attrs);
+NTSTATUS cli_mkdir(struct cli_state *cli, const char *dname)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
 
-       cli_setup_bcc(cli, p);
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return false;
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
 
-       if (cli_is_error(cli)) {
-               return false;
+       req = cli_mkdir_send(frame, ev, cli, dname);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
 
-       return true;
-}
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
 
-/****************************************************************************
- Delete a file.
-****************************************************************************/
+       status = cli_mkdir_recv(req);
 
-bool cli_unlink(struct cli_state *cli, const char *fname)
-{
-       return cli_unlink_full(cli, fname, aSYSTEM | aHIDDEN);
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
Create a directory.
Remove a directory.
 ****************************************************************************/
 
-bool cli_mkdir(struct cli_state *cli, const char *dname)
-{
-       char *p;
-
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+static void cli_rmdir_done(struct tevent_req *subreq);
 
-       cli_set_message(cli->outbuf,0, 0, true);
-
-       SCVAL(cli->outbuf,smb_com,SMBmkdir);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+struct cli_rmdir_state {
+       int dummy;
+};
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, dname,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
+struct tevent_req *cli_rmdir_send(TALLOC_CTX *mem_ctx,
+                                 struct event_context *ev,
+                                 struct cli_state *cli,
+                                 const char *dname)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_rmdir_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint8_t *bytes = NULL;
 
-       cli_setup_bcc(cli, p);
+       req = tevent_req_create(mem_ctx, &state, struct cli_rmdir_state);
+       if (req == NULL) {
+               return NULL;
+       }
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return False;
+       bytes = talloc_array(state, uint8_t, 1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
+       bytes[0] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), dname,
+                                  strlen(dname)+1, NULL);
 
-       if (cli_is_error(cli)) {
-               return False;
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
 
-       return True;
+       subreq = cli_smb_send(state, ev, cli, SMBrmdir, additional_flags,
+                             0, NULL, talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_rmdir_done, req);
+       return req;
 }
 
-/****************************************************************************
- Remove a directory.
-****************************************************************************/
-
-bool cli_rmdir(struct cli_state *cli, const char *dname)
+static void cli_rmdir_done(struct tevent_req *subreq)
 {
-       char *p;
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       NTSTATUS status;
 
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       tevent_req_done(req);
+}
 
-       cli_set_message(cli->outbuf,0, 0, true);
+NTSTATUS cli_rmdir_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
+}
 
-       SCVAL(cli->outbuf,smb_com,SMBrmdir);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+NTSTATUS cli_rmdir(struct cli_state *cli, const char *dname)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, dname,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
 
-       cli_setup_bcc(cli, p);
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return false;
+       req = cli_rmdir_send(frame, ev, cli, dname);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
 
-       if (cli_is_error(cli)) {
-               return false;
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
        }
 
-       return true;
+       status = cli_rmdir_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  Set or clear the delete on close flag.
 ****************************************************************************/
 
-int cli_nt_delete_on_close(struct cli_state *cli, int fnum, bool flag)
+int cli_nt_delete_on_close(struct cli_state *cli, uint16_t fnum, bool flag)
 {
        unsigned int data_len = 1;
        unsigned int param_len = 6;
-       uint16 setup = TRANSACT2_SETFILEINFO;
+       uint16_t setup = TRANSACT2_SETFILEINFO;
        char param[6];
        unsigned char data;
        char *rparam=NULL, *rdata=NULL;
@@ -709,84 +1543,36 @@ int cli_nt_delete_on_close(struct cli_state *cli, int fnum, bool flag)
        return true;
 }
 
-/****************************************************************************
- Open a file - exposing the full horror of the NT API :-).
- Used in smbtorture.
-****************************************************************************/
-
-int cli_nt_create_full(struct cli_state *cli, const char *fname,
-                      uint32 CreatFlags, uint32 DesiredAccess,
-                      uint32 FileAttributes, uint32 ShareAccess,
-                      uint32 CreateDisposition, uint32 CreateOptions,
-                      uint8 SecurityFlags)
-{
-       char *p;
-       int len;
-
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
-
-       cli_set_message(cli->outbuf,24,0, true);
-
-       SCVAL(cli->outbuf,smb_com,SMBntcreateX);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
-
-       SSVAL(cli->outbuf,smb_vwv0,0xFF);
-       if (cli->use_oplocks)
-               CreatFlags |= (REQUEST_OPLOCK|REQUEST_BATCH_OPLOCK);
-
-       SIVAL(cli->outbuf,smb_ntcreate_Flags, CreatFlags);
-       SIVAL(cli->outbuf,smb_ntcreate_RootDirectoryFid, 0x0);
-       SIVAL(cli->outbuf,smb_ntcreate_DesiredAccess, DesiredAccess);
-       SIVAL(cli->outbuf,smb_ntcreate_FileAttributes, FileAttributes);
-       SIVAL(cli->outbuf,smb_ntcreate_ShareAccess, ShareAccess);
-       SIVAL(cli->outbuf,smb_ntcreate_CreateDisposition, CreateDisposition);
-       SIVAL(cli->outbuf,smb_ntcreate_CreateOptions, CreateOptions);
-       SIVAL(cli->outbuf,smb_ntcreate_ImpersonationLevel, 0x02);
-       SCVAL(cli->outbuf,smb_ntcreate_SecurityFlags, SecurityFlags);
-
-       p = smb_buf(cli->outbuf);
-       /* this alignment and termination is critical for netapp filers. Don't change */
-       p += clistr_align_out(cli, p, 0);
-       len = clistr_push(cli, p, fname,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), 0);
-       p += len;
-       SSVAL(cli->outbuf,smb_ntcreate_NameLength, len);
-       /* sigh. this copes with broken netapp filer behaviour */
-       p += clistr_push(cli, p, "",
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
-
-       cli_setup_bcc(cli, p);
-
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return -1;
-       }
-
-       if (cli_is_error(cli)) {
-               return -1;
-       }
-
-       return SVAL(cli->inbuf,smb_vwv2 + 1);
-}
-
-struct async_req *cli_ntcreate_send(TALLOC_CTX *mem_ctx,
-                                   struct event_context *ev,
-                                   struct cli_state *cli,
-                                   const char *fname,
-                                   uint32_t CreatFlags,
-                                   uint32_t DesiredAccess,
-                                   uint32_t FileAttributes,
-                                   uint32_t ShareAccess,
-                                   uint32_t CreateDisposition,
-                                   uint32_t CreateOptions,
-                                   uint8_t SecurityFlags)
+struct cli_ntcreate_state {
+       uint16_t vwv[24];
+       uint16_t fnum;
+};
+
+static void cli_ntcreate_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_ntcreate_send(TALLOC_CTX *mem_ctx,
+                                    struct event_context *ev,
+                                    struct cli_state *cli,
+                                    const char *fname,
+                                    uint32_t CreatFlags,
+                                    uint32_t DesiredAccess,
+                                    uint32_t FileAttributes,
+                                    uint32_t ShareAccess,
+                                    uint32_t CreateDisposition,
+                                    uint32_t CreateOptions,
+                                    uint8_t SecurityFlags)
 {
-       struct async_req *result;
+       struct tevent_req *req, *subreq;
+       struct cli_ntcreate_state *state;
+       uint16_t *vwv;
        uint8_t *bytes;
        size_t converted_len;
-       uint16_t vwv[24];
+
+       req = tevent_req_create(mem_ctx, &state, struct cli_ntcreate_state);
+       if (req == NULL) {
+               return NULL;
+       }
+       vwv = state->vwv;
 
        SCVAL(vwv+0, 0, 0xFF);
        SCVAL(vwv+0, 1, 0);
@@ -808,7 +1594,7 @@ struct async_req *cli_ntcreate_send(TALLOC_CTX *mem_ctx,
        SIVAL(vwv+21, 1, 0x02); /* ImpersonationLevel */
        SCVAL(vwv+23, 1, SecurityFlags);
 
-       bytes = talloc_array(talloc_tos(), uint8_t, 0);
+       bytes = talloc_array(state, uint8_t, 0);
        bytes = smb_bytes_push_str(bytes, cli_ucs2(cli),
                                   fname, strlen(fname)+1,
                                   &converted_len);
@@ -816,41 +1602,53 @@ struct async_req *cli_ntcreate_send(TALLOC_CTX *mem_ctx,
        /* sigh. this copes with broken netapp filer behaviour */
        bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "", 1, NULL);
 
-       if (bytes == NULL) {
-               return NULL;
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
 
        SIVAL(vwv+2, 1, converted_len);
 
-       result = cli_request_send(mem_ctx, ev, cli, SMBntcreateX, 0,
-                                 24, vwv, 0, talloc_get_size(bytes), bytes);
-       TALLOC_FREE(bytes);
-       return result;
+       subreq = cli_smb_send(state, ev, cli, SMBntcreateX, 0, 24, vwv,
+                             talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_ntcreate_done, req);
+       return req;
 }
 
-NTSTATUS cli_ntcreate_recv(struct async_req *req, uint16_t *pfnum)
+static void cli_ntcreate_done(struct tevent_req *subreq)
 {
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       struct cli_ntcreate_state *state = tevent_req_data(
+               req, struct cli_ntcreate_state);
        uint8_t wct;
        uint16_t *vwv;
-       uint16_t num_bytes;
+       uint32_t num_bytes;
        uint8_t *bytes;
        NTSTATUS status;
 
-       if (async_req_is_error(req, &status)) {
-               return status;
-       }
-
-       status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
+       status = cli_smb_recv(subreq, 3, &wct, &vwv, &num_bytes, &bytes);
        if (!NT_STATUS_IS_OK(status)) {
-               return status;
-       }
-
-       if (wct < 3) {
-               return NT_STATUS_INVALID_NETWORK_RESPONSE;
+               TALLOC_FREE(subreq);
+               tevent_req_nterror(req, status);
+               return;
        }
+       state->fnum = SVAL(vwv+2, 1);
+       tevent_req_done(req);
+}
 
-       *pfnum = SVAL(vwv+2, 1);
+NTSTATUS cli_ntcreate_recv(struct tevent_req *req, uint16_t *pfnum)
+{
+       struct cli_ntcreate_state *state = tevent_req_data(
+               req, struct cli_ntcreate_state);
+       NTSTATUS status;
 
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       *pfnum = state->fnum;
        return NT_STATUS_OK;
 }
 
@@ -867,10 +1665,10 @@ NTSTATUS cli_ntcreate(struct cli_state *cli,
 {
        TALLOC_CTX *frame = talloc_stackframe();
        struct event_context *ev;
-       struct async_req *req;
-       NTSTATUS status;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
 
-       if (cli->fd_event != NULL) {
+       if (cli_has_async_calls(cli)) {
                /*
                 * Can't use sync call while an async call is in flight
                 */
@@ -893,74 +1691,18 @@ NTSTATUS cli_ntcreate(struct cli_state *cli,
                goto fail;
        }
 
-       while (req->state < ASYNC_REQ_DONE) {
-               event_loop_once(ev);
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
        }
 
        status = cli_ntcreate_recv(req, pfid);
  fail:
        TALLOC_FREE(frame);
-       return status;
-}
-
-/****************************************************************************
- Open a file.
-****************************************************************************/
-
-int cli_nt_create(struct cli_state *cli, const char *fname, uint32 DesiredAccess)
-{
-       return cli_nt_create_full(cli, fname, 0, DesiredAccess, 0,
-                               FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0);
-}
-
-uint8_t *smb_bytes_push_str(uint8_t *buf, bool ucs2,
-                           const char *str, size_t str_len,
-                           size_t *pconverted_size)
-{
-       size_t buflen;
-       char *converted;
-       size_t converted_size;
-
-       if (buf == NULL) {
-               return NULL;
-       }
-
-       buflen = talloc_get_size(buf);
-       /*
-        * We're pushing into an SMB buffer, align odd
-        */
-       if (ucs2 && (buflen % 2 == 0)) {
-               buf = TALLOC_REALLOC_ARRAY(NULL, buf, uint8_t, buflen + 1);
-               if (buf == NULL) {
-                       return NULL;
-               }
-               buf[buflen] = '\0';
-               buflen += 1;
-       }
-
-       if (!convert_string_allocate(talloc_tos(), CH_UNIX,
-                                    ucs2 ? CH_UTF16LE : CH_DOS,
-                                    str, str_len, &converted,
-                                    &converted_size, true)) {
-               return NULL;
-       }
-
-       buf = TALLOC_REALLOC_ARRAY(NULL, buf, uint8_t,
-                                  buflen + converted_size);
-       if (buf == NULL) {
-               TALLOC_FREE(converted);
-               return NULL;
-       }
-
-       memcpy(buf + buflen, converted, converted_size);
-
-       TALLOC_FREE(converted);
-
-       if (pconverted_size) {
-               *pconverted_size = converted_size;
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
        }
-
-       return buf;
+       return status;
 }
 
 /****************************************************************************
@@ -968,17 +1710,33 @@ uint8_t *smb_bytes_push_str(uint8_t *buf, bool ucs2,
  WARNING: if you open with O_WRONLY then getattrE won't work!
 ****************************************************************************/
 
-struct async_req *cli_open_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
-                               struct cli_state *cli,
-                               const char *fname, int flags, int share_mode)
+struct cli_open_state {
+       uint16_t vwv[15];
+       uint16_t fnum;
+       struct iovec bytes;
+};
+
+static void cli_open_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_open_create(TALLOC_CTX *mem_ctx,
+                                  struct event_context *ev,
+                                  struct cli_state *cli, const char *fname,
+                                  int flags, int share_mode,
+                                  struct tevent_req **psmbreq)
 {
-       unsigned openfn = 0;
-       unsigned accessmode = 0;
-       uint8_t additional_flags = 0;
+       struct tevent_req *req, *subreq;
+       struct cli_open_state *state;
+       unsigned openfn;
+       unsigned accessmode;
+       uint8_t additional_flags;
        uint8_t *bytes;
-       uint16_t vwv[15];
-       struct async_req *result;
 
+       req = tevent_req_create(mem_ctx, &state, struct cli_open_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       openfn = 0;
        if (flags & O_CREAT) {
                openfn |= (1<<4);
        }
@@ -1007,177 +1765,275 @@ struct async_req *cli_open_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
                accessmode = 0xFF;
        }
 
-       SCVAL(vwv + 0, 0, 0xFF);
-       SCVAL(vwv + 0, 1, 0);
-       SSVAL(vwv + 1, 0, 0);
-       SSVAL(vwv + 2, 0, 0);  /* no additional info */
-       SSVAL(vwv + 3, 0, accessmode);
-       SSVAL(vwv + 4, 0, aSYSTEM | aHIDDEN);
-       SSVAL(vwv + 5, 0, 0);
-       SIVAL(vwv + 6, 0, 0);
-       SSVAL(vwv + 8, 0, openfn);
-       SIVAL(vwv + 9, 0, 0);
-       SIVAL(vwv + 11, 0, 0);
-       SIVAL(vwv + 13, 0, 0);
+       SCVAL(state->vwv + 0, 0, 0xFF);
+       SCVAL(state->vwv + 0, 1, 0);
+       SSVAL(state->vwv + 1, 0, 0);
+       SSVAL(state->vwv + 2, 0, 0);  /* no additional info */
+       SSVAL(state->vwv + 3, 0, accessmode);
+       SSVAL(state->vwv + 4, 0, aSYSTEM | aHIDDEN);
+       SSVAL(state->vwv + 5, 0, 0);
+       SIVAL(state->vwv + 6, 0, 0);
+       SSVAL(state->vwv + 8, 0, openfn);
+       SIVAL(state->vwv + 9, 0, 0);
+       SIVAL(state->vwv + 11, 0, 0);
+       SIVAL(state->vwv + 13, 0, 0);
+
+       additional_flags = 0;
 
        if (cli->use_oplocks) {
                /* if using oplocks then ask for a batch oplock via
                    core and extended methods */
                additional_flags =
                        FLAG_REQUEST_OPLOCK|FLAG_REQUEST_BATCH_OPLOCK;
-               SSVAL(vwv+2, 0, SVAL(vwv+2, 0) | 6);
+               SSVAL(state->vwv+2, 0, SVAL(state->vwv+2, 0) | 6);
        }
 
-       bytes = talloc_array(talloc_tos(), uint8_t, 0);
+       bytes = talloc_array(state, uint8_t, 0);
        bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname,
                                   strlen(fname)+1, NULL);
-       if (bytes == NULL) {
-               return NULL;
+
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
 
-       result = cli_request_send(mem_ctx, ev, cli, SMBopenX, additional_flags,
-                                 15, vwv, 0, talloc_get_size(bytes), bytes);
-       TALLOC_FREE(bytes);
-       return result;
+       state->bytes.iov_base = (void *)bytes;
+       state->bytes.iov_len = talloc_get_size(bytes);
+
+       subreq = cli_smb_req_create(state, ev, cli, SMBopenX, additional_flags,
+                                   15, state->vwv, 1, &state->bytes);
+       if (subreq == NULL) {
+               TALLOC_FREE(req);
+               return NULL;
+       }
+       tevent_req_set_callback(subreq, cli_open_done, req);
+       *psmbreq = subreq;
+       return req;
 }
 
-NTSTATUS cli_open_recv(struct async_req *req, int *fnum)
+struct tevent_req *cli_open_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
+                                struct cli_state *cli, const char *fname,
+                                int flags, int share_mode)
 {
-       uint8_t wct;
-       uint16_t *vwv;
-       uint16_t num_bytes;
-       uint8_t *bytes;
+       struct tevent_req *req, *subreq;
        NTSTATUS status;
 
-       if (async_req_is_error(req, &status)) {
-               return status;
+       req = cli_open_create(mem_ctx, ev, cli, fname, flags, share_mode,
+                             &subreq);
+       if (req == NULL) {
+               return NULL;
        }
 
-       status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
+       status = cli_smb_req_send(subreq);
        if (!NT_STATUS_IS_OK(status)) {
-               return status;
+               tevent_req_nterror(req, status);
+               return tevent_req_post(req, ev);
        }
+       return req;
+}
+
+static void cli_open_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       struct cli_open_state *state = tevent_req_data(
+               req, struct cli_open_state);
+       uint8_t wct;
+       uint16_t *vwv;
+       NTSTATUS status;
 
-       if (wct < 3) {
-               return NT_STATUS_INVALID_NETWORK_RESPONSE;
+       status = cli_smb_recv(subreq, 3, &wct, &vwv, NULL, NULL);
+       if (!NT_STATUS_IS_OK(status)) {
+               TALLOC_FREE(subreq);
+               tevent_req_nterror(req, status);
+               return;
        }
+       state->fnum = SVAL(vwv+2, 0);
+       tevent_req_done(req);
+}
 
-       *fnum = SVAL(vwv+2, 0);
+NTSTATUS cli_open_recv(struct tevent_req *req, uint16_t *pfnum)
+{
+       struct cli_open_state *state = tevent_req_data(
+               req, struct cli_open_state);
+       NTSTATUS status;
 
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       *pfnum = state->fnum;
        return NT_STATUS_OK;
 }
 
-int cli_open(struct cli_state *cli, const char *fname, int flags,
-            int share_mode)
+NTSTATUS cli_open(struct cli_state *cli, const char *fname, int flags,
+            int share_mode, uint16_t *pfnum)
 {
        TALLOC_CTX *frame = talloc_stackframe();
        struct event_context *ev;
-       struct async_req *req;
-       int result = -1;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
 
-       if (cli->fd_event != NULL) {
+       if (cli_has_async_calls(cli)) {
                /*
                 * Can't use sync call while an async call is in flight
                 */
-               cli_set_error(cli, NT_STATUS_INVALID_PARAMETER);
+               status = NT_STATUS_INVALID_PARAMETER;
                goto fail;
        }
 
        ev = event_context_init(frame);
        if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
                goto fail;
        }
 
        req = cli_open_send(frame, ev, cli, fname, flags, share_mode);
        if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
                goto fail;
        }
 
-       while (req->state < ASYNC_REQ_DONE) {
-               event_loop_once(ev);
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
        }
 
-       cli_open_recv(req, &result);
+       status = cli_open_recv(req, pfnum);
  fail:
        TALLOC_FREE(frame);
-       return result;
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  Close a file.
 ****************************************************************************/
 
-struct async_req *cli_close_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
-                                struct cli_state *cli, int fnum)
-{
+struct cli_close_state {
        uint16_t vwv[3];
+};
 
-       SSVAL(vwv+0, 0, fnum);
-       SIVALS(vwv+1, 0, -1);
+static void cli_close_done(struct tevent_req *subreq);
 
-       return cli_request_send(mem_ctx, ev, cli, SMBclose, 0, 3, vwv, 0,
-                               0, NULL);
+struct tevent_req *cli_close_create(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               uint16_t fnum,
+                               struct tevent_req **psubreq)
+{
+       struct tevent_req *req, *subreq;
+       struct cli_close_state *state;
+
+       req = tevent_req_create(mem_ctx, &state, struct cli_close_state);
+       if (req == NULL) {
+               return NULL;
+       }
+       SSVAL(state->vwv+0, 0, fnum);
+       SIVALS(state->vwv+1, 0, -1);
+
+       subreq = cli_smb_req_create(state, ev, cli, SMBclose, 0, 3, state->vwv,
+                                   0, NULL);
+       if (subreq == NULL) {
+               TALLOC_FREE(req);
+               return NULL;
+       }
+       tevent_req_set_callback(subreq, cli_close_done, req);
+       *psubreq = subreq;
+       return req;
 }
 
-NTSTATUS cli_close_recv(struct async_req *req)
+struct tevent_req *cli_close_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               uint16_t fnum)
 {
-       uint8_t wct;
-       uint16_t *vwv;
-       uint16_t num_bytes;
-       uint8_t *bytes;
+       struct tevent_req *req, *subreq;
        NTSTATUS status;
 
-       if (async_req_is_error(req, &status)) {
-               return status;
+       req = cli_close_create(mem_ctx, ev, cli, fnum, &subreq);
+       if (req == NULL) {
+               return NULL;
        }
 
-       return cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
+       status = cli_smb_req_send(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return tevent_req_post(req, ev);
+       }
+       return req;
+}
+
+static void cli_close_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       NTSTATUS status;
+
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       tevent_req_done(req);
+}
+
+NTSTATUS cli_close_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
 }
 
-bool cli_close(struct cli_state *cli, int fnum)
+NTSTATUS cli_close(struct cli_state *cli, uint16_t fnum)
 {
        TALLOC_CTX *frame = talloc_stackframe();
        struct event_context *ev;
-       struct async_req *req;
-       bool result = false;
+       struct tevent_req *req;
+       NTSTATUS status = NT_STATUS_OK;
 
-       if (cli->fd_event != NULL) {
+       if (cli_has_async_calls(cli)) {
                /*
                 * Can't use sync call while an async call is in flight
                 */
-               cli_set_error(cli, NT_STATUS_INVALID_PARAMETER);
+               status = NT_STATUS_INVALID_PARAMETER;
                goto fail;
        }
 
        ev = event_context_init(frame);
        if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
                goto fail;
        }
 
        req = cli_close_send(frame, ev, cli, fnum);
        if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
                goto fail;
        }
 
-       while (req->state < ASYNC_REQ_DONE) {
-               event_loop_once(ev);
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
        }
 
-       result = NT_STATUS_IS_OK(cli_close_recv(req));
+       status = cli_close_recv(req);
  fail:
        TALLOC_FREE(frame);
-       return result;
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  Truncate a file to a specified size
 ****************************************************************************/
 
-bool cli_ftruncate(struct cli_state *cli, int fnum, uint64_t size)
+bool cli_ftruncate(struct cli_state *cli, uint16_t fnum, uint64_t size)
 {
        unsigned int param_len = 6;
        unsigned int data_len = 8;
-       uint16 setup = TRANSACT2_SETFILEINFO;
+       uint16_t setup = TRANSACT2_SETFILEINFO;
        char param[6];
        unsigned char data[8];
        char *rparam=NULL, *rdata=NULL;
@@ -1223,8 +2079,8 @@ bool cli_ftruncate(struct cli_state *cli, int fnum, uint64_t size)
  this is used for testing LOCKING_ANDX_CANCEL_LOCK
 ****************************************************************************/
 
-NTSTATUS cli_locktype(struct cli_state *cli, int fnum,
-                     uint32 offset, uint32 len,
+NTSTATUS cli_locktype(struct cli_state *cli, uint16_t fnum,
+                     uint32_t offset, uint32_t len,
                      int timeout, unsigned char locktype)
 {
        char *p;
@@ -1276,8 +2132,8 @@ NTSTATUS cli_locktype(struct cli_state *cli, int fnum,
  note that timeout is in units of 2 milliseconds
 ****************************************************************************/
 
-bool cli_lock(struct cli_state *cli, int fnum,
-             uint32 offset, uint32 len, int timeout, enum brl_type lock_type)
+bool cli_lock(struct cli_state *cli, uint16_t fnum,
+             uint32_t offset, uint32_t len, int timeout, enum brl_type lock_type)
 {
        char *p;
        int saved_timeout = cli->timeout;
@@ -1331,7 +2187,7 @@ bool cli_lock(struct cli_state *cli, int fnum,
  Unlock a file.
 ****************************************************************************/
 
-bool cli_unlock(struct cli_state *cli, int fnum, uint32 offset, uint32 len)
+bool cli_unlock(struct cli_state *cli, uint16_t fnum, uint32_t offset, uint32_t len)
 {
        char *p;
 
@@ -1373,7 +2229,7 @@ bool cli_unlock(struct cli_state *cli, int fnum, uint32 offset, uint32 len)
  Lock a file with 64 bit offsets.
 ****************************************************************************/
 
-bool cli_lock64(struct cli_state *cli, int fnum,
+bool cli_lock64(struct cli_state *cli, uint16_t fnum,
                uint64_t offset, uint64_t len, int timeout, enum brl_type lock_type)
 {
        char *p;
@@ -1434,7 +2290,7 @@ bool cli_lock64(struct cli_state *cli, int fnum,
  Unlock a file with 64 bit offsets.
 ****************************************************************************/
 
-bool cli_unlock64(struct cli_state *cli, int fnum, uint64_t offset, uint64_t len)
+bool cli_unlock64(struct cli_state *cli, uint16_t fnum, uint64_t offset, uint64_t len)
 {
        char *p;
 
@@ -1480,12 +2336,12 @@ bool cli_unlock64(struct cli_state *cli, int fnum, uint64_t offset, uint64_t len
  Get/unlock a POSIX lock on a file - internal function.
 ****************************************************************************/
 
-static bool cli_posix_lock_internal(struct cli_state *cli, int fnum,
+static bool cli_posix_lock_internal(struct cli_state *cli, uint16_t fnum,
                uint64_t offset, uint64_t len, bool wait_lock, enum brl_type lock_type)
 {
        unsigned int param_len = 4;
        unsigned int data_len = POSIX_LOCK_DATA_SIZE;
-       uint16 setup = TRANSACT2_SETFILEINFO;
+       uint16_t setup = TRANSACT2_SETFILEINFO;
        char param[4];
        unsigned char data[POSIX_LOCK_DATA_SIZE];
        char *rparam=NULL, *rdata=NULL;
@@ -1551,7 +2407,7 @@ static bool cli_posix_lock_internal(struct cli_state *cli, int fnum,
  POSIX Lock a file.
 ****************************************************************************/
 
-bool cli_posix_lock(struct cli_state *cli, int fnum,
+bool cli_posix_lock(struct cli_state *cli, uint16_t fnum,
                        uint64_t offset, uint64_t len,
                        bool wait_lock, enum brl_type lock_type)
 {
@@ -1565,7 +2421,7 @@ bool cli_posix_lock(struct cli_state *cli, int fnum,
  POSIX Unlock a file.
 ****************************************************************************/
 
-bool cli_posix_unlock(struct cli_state *cli, int fnum, uint64_t offset, uint64_t len)
+bool cli_posix_unlock(struct cli_state *cli, uint16_t fnum, uint64_t offset, uint64_t len)
 {
        return cli_posix_lock_internal(cli, fnum, offset, len, False, UNLOCK_LOCK);
 }
@@ -1574,267 +2430,789 @@ bool cli_posix_unlock(struct cli_state *cli, int fnum, uint64_t offset, uint64_t
  POSIX Get any lock covering a file.
 ****************************************************************************/
 
-bool cli_posix_getlock(struct cli_state *cli, int fnum, uint64_t *poffset, uint64_t *plen)
+bool cli_posix_getlock(struct cli_state *cli, uint16_t fnum, uint64_t *poffset, uint64_t *plen)
 {
        return True;
 }
 
-/****************************************************************************
- Do a SMBgetattrE call.
-****************************************************************************/
+/****************************************************************************
+ Do a SMBgetattrE call.
+****************************************************************************/
+
+static void cli_getattrE_done(struct tevent_req *subreq);
+
+struct cli_getattrE_state {
+       uint16_t vwv[1];
+       int zone_offset;
+       uint16_t attr;
+       SMB_OFF_T size;
+       time_t change_time;
+       time_t access_time;
+       time_t write_time;
+};
+
+struct tevent_req *cli_getattrE_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               uint16_t fnum)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_getattrE_state *state = NULL;
+       uint8_t additional_flags = 0;
+
+       req = tevent_req_create(mem_ctx, &state, struct cli_getattrE_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       state->zone_offset = cli->serverzone;
+       SSVAL(state->vwv+0,0,fnum);
+
+       subreq = cli_smb_send(state, ev, cli, SMBgetattrE, additional_flags,
+                             1, state->vwv, 0, NULL);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_getattrE_done, req);
+       return req;
+}
+
+static void cli_getattrE_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       struct cli_getattrE_state *state = tevent_req_data(
+               req, struct cli_getattrE_state);
+       uint8_t wct;
+       uint16_t *vwv = NULL;
+       NTSTATUS status;
+
+       status = cli_smb_recv(subreq, 11, &wct, &vwv, NULL, NULL);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+
+       state->size = (SMB_OFF_T)IVAL(vwv+6,0);
+       state->attr = SVAL(vwv+10,0);
+       state->change_time = make_unix_date2(vwv+0, state->zone_offset);
+       state->access_time = make_unix_date2(vwv+2, state->zone_offset);
+       state->write_time = make_unix_date2(vwv+4, state->zone_offset);
+
+       TALLOC_FREE(subreq);
+       tevent_req_done(req);
+}
+
+NTSTATUS cli_getattrE_recv(struct tevent_req *req,
+                       uint16_t *attr,
+                       SMB_OFF_T *size,
+                       time_t *change_time,
+                       time_t *access_time,
+                       time_t *write_time)
+{
+       struct cli_getattrE_state *state = tevent_req_data(
+                               req, struct cli_getattrE_state);
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       if (attr) {
+               *attr = state->attr;
+       }
+       if (size) {
+               *size = state->size;
+       }
+       if (change_time) {
+               *change_time = state->change_time;
+       }
+       if (access_time) {
+               *access_time = state->access_time;
+       }
+       if (write_time) {
+               *write_time = state->write_time;
+       }
+       return NT_STATUS_OK;
+}
+
+NTSTATUS cli_getattrE(struct cli_state *cli,
+                       uint16_t fnum,
+                       uint16_t *attr,
+                       SMB_OFF_T *size,
+                       time_t *change_time,
+                       time_t *access_time,
+                       time_t *write_time)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_getattrE_send(frame, ev, cli, fnum);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_getattrE_recv(req,
+                                       attr,
+                                       size,
+                                       change_time,
+                                       access_time,
+                                       write_time);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
+}
+
+/****************************************************************************
+ Do a SMBgetatr call
+****************************************************************************/
+
+static void cli_getatr_done(struct tevent_req *subreq);
+
+struct cli_getatr_state {
+       int zone_offset;
+       uint16_t attr;
+       SMB_OFF_T size;
+       time_t write_time;
+};
+
+struct tevent_req *cli_getatr_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               const char *fname)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_getatr_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint8_t *bytes = NULL;
+
+       req = tevent_req_create(mem_ctx, &state, struct cli_getatr_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       state->zone_offset = cli->serverzone;
+
+       bytes = talloc_array(state, uint8_t, 1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
+       bytes[0] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname,
+                                  strlen(fname)+1, NULL);
+
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
+
+       subreq = cli_smb_send(state, ev, cli, SMBgetatr, additional_flags,
+                             0, NULL, talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_getatr_done, req);
+       return req;
+}
+
+static void cli_getatr_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       struct cli_getatr_state *state = tevent_req_data(
+               req, struct cli_getatr_state);
+       uint8_t wct;
+       uint16_t *vwv = NULL;
+       NTSTATUS status;
+
+       status = cli_smb_recv(subreq, 4, &wct, &vwv, NULL, NULL);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+
+       state->attr = SVAL(vwv+0,0);
+       state->size = (SMB_OFF_T)IVAL(vwv+3,0);
+       state->write_time = make_unix_date3(vwv+1, state->zone_offset);
+
+       TALLOC_FREE(subreq);
+       tevent_req_done(req);
+}
+
+NTSTATUS cli_getatr_recv(struct tevent_req *req,
+                       uint16_t *attr,
+                       SMB_OFF_T *size,
+                       time_t *write_time)
+{
+       struct cli_getatr_state *state = tevent_req_data(
+                               req, struct cli_getatr_state);
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       if (attr) {
+               *attr = state->attr;
+       }
+       if (size) {
+               *size = state->size;
+       }
+       if (write_time) {
+               *write_time = state->write_time;
+       }
+       return NT_STATUS_OK;
+}
+
+NTSTATUS cli_getatr(struct cli_state *cli,
+                       const char *fname,
+                       uint16_t *attr,
+                       SMB_OFF_T *size,
+                       time_t *write_time)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_getatr_send(frame, ev, cli, fname);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_getatr_recv(req,
+                               attr,
+                               size,
+                               write_time);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
+}
+
+/****************************************************************************
+ Do a SMBsetattrE call.
+****************************************************************************/
+
+static void cli_setattrE_done(struct tevent_req *subreq);
+
+struct cli_setattrE_state {
+       int dummy;
+};
+
+struct tevent_req *cli_setattrE_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               uint16_t fnum,
+                               time_t change_time,
+                               time_t access_time,
+                               time_t write_time)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_setattrE_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint16_t vwv[7];
+
+       req = tevent_req_create(mem_ctx, &state, struct cli_setattrE_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       memset(vwv, '\0', sizeof(vwv));
+       SSVAL(vwv+0, 0, fnum);
+       cli_put_dos_date2(cli, (char *)&vwv[1], 0, change_time);
+       cli_put_dos_date2(cli, (char *)&vwv[3], 0, access_time);
+       cli_put_dos_date2(cli, (char *)&vwv[5], 0, write_time);
+
+       subreq = cli_smb_send(state, ev, cli, SMBsetattrE, additional_flags,
+                             7, vwv, 0, NULL);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_setattrE_done, req);
+       return req;
+}
 
-bool cli_getattrE(struct cli_state *cli, int fd,
-                 uint16 *attr, SMB_OFF_T *size,
-                 time_t *change_time,
-                  time_t *access_time,
-                  time_t *write_time)
+static void cli_setattrE_done(struct tevent_req *subreq)
 {
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       NTSTATUS status;
 
-       cli_set_message(cli->outbuf,1,0,True);
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       tevent_req_done(req);
+}
 
-       SCVAL(cli->outbuf,smb_com,SMBgetattrE);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+NTSTATUS cli_setattrE_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
+}
 
-       SSVAL(cli->outbuf,smb_vwv0,fd);
+NTSTATUS cli_setattrE(struct cli_state *cli,
+                       uint16_t fnum,
+                       time_t change_time,
+                       time_t access_time,
+                       time_t write_time)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return False;
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
        }
 
-       if (cli_is_error(cli)) {
-               return False;
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
 
-       if (size) {
-               *size = IVAL(cli->inbuf, smb_vwv6);
-       }
+       req = cli_setattrE_send(frame, ev,
+                       cli,
+                       fnum,
+                       change_time,
+                       access_time,
+                       write_time);
 
-       if (attr) {
-               *attr = SVAL(cli->inbuf,smb_vwv10);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
 
-       if (change_time) {
-               *change_time = cli_make_unix_date2(cli, cli->inbuf+smb_vwv0);
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
        }
 
-       if (access_time) {
-               *access_time = cli_make_unix_date2(cli, cli->inbuf+smb_vwv2);
-       }
+       status = cli_setattrE_recv(req);
 
-       if (write_time) {
-               *write_time = cli_make_unix_date2(cli, cli->inbuf+smb_vwv4);
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
        }
-
-       return True;
+       return status;
 }
 
 /****************************************************************************
- Do a SMBgetatr call
+ Do a SMBsetatr call.
 ****************************************************************************/
 
-bool cli_getatr(struct cli_state *cli, const char *fname,
-               uint16 *attr, SMB_OFF_T *size, time_t *write_time)
-{
-       char *p;
-
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+static void cli_setatr_done(struct tevent_req *subreq);
 
-       cli_set_message(cli->outbuf,0,0,True);
+struct cli_setatr_state {
+       uint16_t vwv[8];
+};
 
-       SCVAL(cli->outbuf,smb_com,SMBgetatr);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+struct tevent_req *cli_setatr_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               struct cli_state *cli,
+                               const char *fname,
+                               uint16_t attr,
+                               time_t mtime)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_setatr_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint8_t *bytes = NULL;
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
+       req = tevent_req_create(mem_ctx, &state, struct cli_setatr_state);
+       if (req == NULL) {
+               return NULL;
+       }
 
-       cli_setup_bcc(cli, p);
+       memset(state->vwv, '\0', sizeof(state->vwv));
+       SSVAL(state->vwv+0, 0, attr);
+       cli_put_dos_date3(cli, (char *)&state->vwv[1], 0, mtime);
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return False;
+       bytes = talloc_array(state, uint8_t, 1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
-
-       if (cli_is_error(cli)) {
-               return False;
+       bytes[0] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname,
+                                  strlen(fname)+1, NULL);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
-
-       if (size) {
-               *size = IVAL(cli->inbuf, smb_vwv3);
+       bytes = TALLOC_REALLOC_ARRAY(state, bytes, uint8_t,
+                       talloc_get_size(bytes)+1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
 
-       if (write_time) {
-               *write_time = cli_make_unix_date3(cli, cli->inbuf+smb_vwv1);
+       bytes[talloc_get_size(bytes)-1] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "",
+                                  1, NULL);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
 
-       if (attr) {
-               *attr = SVAL(cli->inbuf,smb_vwv0);
+       subreq = cli_smb_send(state, ev, cli, SMBsetatr, additional_flags,
+                             8, state->vwv, talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
        }
-
-       return True;
+       tevent_req_set_callback(subreq, cli_setatr_done, req);
+       return req;
 }
 
-/****************************************************************************
- Do a SMBsetattrE call.
-****************************************************************************/
-
-bool cli_setattrE(struct cli_state *cli, int fd,
-                 time_t change_time,
-                  time_t access_time,
-                  time_t write_time)
-
+static void cli_setatr_done(struct tevent_req *subreq)
 {
-       char *p;
-
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       NTSTATUS status;
 
-       cli_set_message(cli->outbuf,7,0,True);
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       tevent_req_done(req);
+}
 
-       SCVAL(cli->outbuf,smb_com,SMBsetattrE);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+NTSTATUS cli_setatr_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
+}
 
-       SSVAL(cli->outbuf,smb_vwv0, fd);
-       cli_put_dos_date2(cli, cli->outbuf,smb_vwv1, change_time);
-       cli_put_dos_date2(cli, cli->outbuf,smb_vwv3, access_time);
-       cli_put_dos_date2(cli, cli->outbuf,smb_vwv5, write_time);
+NTSTATUS cli_setatr(struct cli_state *cli,
+               const char *fname,
+               uint16_t attr,
+               time_t mtime)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
 
-       cli_setup_bcc(cli, p);
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return False;
+       req = cli_setatr_send(frame, ev, cli, fname, attr, mtime);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
 
-       if (cli_is_error(cli)) {
-               return False;
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
        }
 
-       return True;
+       status = cli_setatr_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
Do a SMBsetatr call.
Check for existance of a dir.
 ****************************************************************************/
 
-bool cli_setatr(struct cli_state *cli, const char *fname, uint16 attr, time_t t)
-{
-       char *p;
-
-       memset(cli->outbuf,'\0',smb_size);
-       memset(cli->inbuf,'\0',smb_size);
-
-       cli_set_message(cli->outbuf,8,0,True);
+static void cli_chkpath_done(struct tevent_req *subreq);
 
-       SCVAL(cli->outbuf,smb_com,SMBsetatr);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+struct cli_chkpath_state {
+       int dummy;
+};
 
-       SSVAL(cli->outbuf,smb_vwv0, attr);
-       cli_put_dos_date3(cli, cli->outbuf,smb_vwv1, t);
+struct tevent_req *cli_chkpath_send(TALLOC_CTX *mem_ctx,
+                                 struct event_context *ev,
+                                 struct cli_state *cli,
+                                 const char *fname)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_chkpath_state *state = NULL;
+       uint8_t additional_flags = 0;
+       uint8_t *bytes = NULL;
 
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, fname,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
-       *p++ = 4;
+       req = tevent_req_create(mem_ctx, &state, struct cli_chkpath_state);
+       if (req == NULL) {
+               return NULL;
+       }
 
-       cli_setup_bcc(cli, p);
+       bytes = talloc_array(state, uint8_t, 1);
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
+       }
+       bytes[0] = 4;
+       bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), fname,
+                                  strlen(fname)+1, NULL);
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return False;
+       if (tevent_req_nomem(bytes, req)) {
+               return tevent_req_post(req, ev);
        }
 
-       if (cli_is_error(cli)) {
-               return False;
+       subreq = cli_smb_send(state, ev, cli, SMBcheckpath, additional_flags,
+                             0, NULL, talloc_get_size(bytes), bytes);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
        }
+       tevent_req_set_callback(subreq, cli_chkpath_done, req);
+       return req;
+}
 
-       return True;
+static void cli_chkpath_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       NTSTATUS status;
+
+       status = cli_smb_recv(subreq, 0, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       tevent_req_done(req);
 }
 
-/****************************************************************************
- Check for existance of a dir.
-****************************************************************************/
+NTSTATUS cli_chkpath_recv(struct tevent_req *req)
+{
+       return tevent_req_simple_recv_ntstatus(req);
+}
 
-bool cli_chkpath(struct cli_state *cli, const char *path)
+NTSTATUS cli_chkpath(struct cli_state *cli, const char *path)
 {
-       char *path2 = NULL;
-       char *p;
        TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       char *path2 = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
 
        path2 = talloc_strdup(frame, path);
        if (!path2) {
-               TALLOC_FREE(frame);
-               return false;
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
        trim_char(path2,'\0','\\');
        if (!*path2) {
                path2 = talloc_strdup(frame, "\\");
                if (!path2) {
-                       TALLOC_FREE(frame);
-                       return false;
+                       status = NT_STATUS_NO_MEMORY;
+                       goto fail;
                }
        }
 
-       memset(cli->outbuf,'\0',smb_size);
-       cli_set_message(cli->outbuf,0,0,True);
-       SCVAL(cli->outbuf,smb_com,SMBcheckpath);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
-       p = smb_buf(cli->outbuf);
-       *p++ = 4;
-       p += clistr_push(cli, p, path2,
-                       cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_TERMINATE);
-
-       cli_setup_bcc(cli, p);
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               TALLOC_FREE(frame);
-               return False;
+       req = cli_chkpath_send(frame, ev, cli, path2);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
 
-       TALLOC_FREE(frame);
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
 
-       if (cli_is_error(cli)) return False;
+       status = cli_chkpath_recv(req);
 
-       return True;
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  Query disk space.
 ****************************************************************************/
 
-bool cli_dskattr(struct cli_state *cli, int *bsize, int *total, int *avail)
+static void cli_dskattr_done(struct tevent_req *subreq);
+
+struct cli_dskattr_state {
+       int bsize;
+       int total;
+       int avail;
+};
+
+struct tevent_req *cli_dskattr_send(TALLOC_CTX *mem_ctx,
+                                 struct event_context *ev,
+                                 struct cli_state *cli)
 {
-       memset(cli->outbuf,'\0',smb_size);
-       cli_set_message(cli->outbuf,0,0,True);
-       SCVAL(cli->outbuf,smb_com,SMBdskattr);
-       SSVAL(cli->outbuf,smb_tid,cli->cnum);
-       cli_setup_packet(cli);
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct cli_dskattr_state *state = NULL;
+       uint8_t additional_flags = 0;
+
+       req = tevent_req_create(mem_ctx, &state, struct cli_dskattr_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       subreq = cli_smb_send(state, ev, cli, SMBdskattr, additional_flags,
+                             0, NULL, 0, NULL);
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_dskattr_done, req);
+       return req;
+}
+
+static void cli_dskattr_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       struct cli_dskattr_state *state = tevent_req_data(
+               req, struct cli_dskattr_state);
+       uint8_t wct;
+       uint16_t *vwv = NULL;
+       NTSTATUS status;
+
+       status = cli_smb_recv(subreq, 4, &wct, &vwv, NULL, NULL);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       state->bsize = SVAL(vwv+1, 0)*SVAL(vwv+2,0);
+       state->total = SVAL(vwv+0, 0);
+       state->avail = SVAL(vwv+3, 0);
+       TALLOC_FREE(subreq);
+       tevent_req_done(req);
+}
+
+NTSTATUS cli_dskattr_recv(struct tevent_req *req, int *bsize, int *total, int *avail)
+{
+       struct cli_dskattr_state *state = tevent_req_data(
+                               req, struct cli_dskattr_state);
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       *bsize = state->bsize;
+       *total = state->total;
+       *avail = state->avail;
+       return NT_STATUS_OK;
+}
+
+NTSTATUS cli_dskattr(struct cli_state *cli, int *bsize, int *total, int *avail)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
 
-       cli_send_smb(cli);
-       if (!cli_receive_smb(cli)) {
-               return False;
+       req = cli_dskattr_send(frame, ev, cli);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
        }
 
-       *bsize = SVAL(cli->inbuf,smb_vwv1)*SVAL(cli->inbuf,smb_vwv2);
-       *total = SVAL(cli->inbuf,smb_vwv0);
-       *avail = SVAL(cli->inbuf,smb_vwv3);
+       status = cli_dskattr_recv(req, bsize, total, avail);
 
-       return True;
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
@@ -1897,7 +3275,7 @@ int cli_ctemp(struct cli_state *cli, const char *path, char **tmp_path)
 /*
    send a raw ioctl - used by the torture code
 */
-NTSTATUS cli_raw_ioctl(struct cli_state *cli, int fnum, uint32 code, DATA_BLOB *blob)
+NTSTATUS cli_raw_ioctl(struct cli_state *cli, uint16_t fnum, uint32_t code, DATA_BLOB *blob)
 {
        memset(cli->outbuf,'\0',smb_size);
        memset(cli->inbuf,'\0',smb_size);
@@ -1928,7 +3306,7 @@ NTSTATUS cli_raw_ioctl(struct cli_state *cli, int fnum, uint32 code, DATA_BLOB *
  Set an extended attribute utility fn.
 *********************************************************/
 
-static bool cli_set_ea(struct cli_state *cli, uint16 setup, char *param, unsigned int param_len,
+static bool cli_set_ea(struct cli_state *cli, uint16_t setup, char *param, unsigned int param_len,
                        const char *ea_name, const char *ea_val, size_t ea_len)
 {
        unsigned int data_len = 0;
@@ -1992,7 +3370,7 @@ static bool cli_set_ea(struct cli_state *cli, uint16 setup, char *param, unsigne
 
 bool cli_set_ea_path(struct cli_state *cli, const char *path, const char *ea_name, const char *ea_val, size_t ea_len)
 {
-       uint16 setup = TRANSACT2_SETPATHINFO;
+       uint16_t setup = TRANSACT2_SETPATHINFO;
        unsigned int param_len = 0;
        char *param;
        size_t srclen = 2*(strlen(path)+1);
@@ -2019,10 +3397,10 @@ bool cli_set_ea_path(struct cli_state *cli, const char *path, const char *ea_nam
  Set an extended attribute on an fnum.
 *********************************************************/
 
-bool cli_set_ea_fnum(struct cli_state *cli, int fnum, const char *ea_name, const char *ea_val, size_t ea_len)
+bool cli_set_ea_fnum(struct cli_state *cli, uint16_t fnum, const char *ea_name, const char *ea_val, size_t ea_len)
 {
        char param[6];
-       uint16 setup = TRANSACT2_SETFILEINFO;
+       uint16_t setup = TRANSACT2_SETFILEINFO;
 
        memset(param, 0, 6);
        SSVAL(param,0,fnum);
@@ -2036,7 +3414,7 @@ bool cli_set_ea_fnum(struct cli_state *cli, int fnum, const char *ea_name, const
 *********************************************************/
 
 static bool cli_get_ea_list(struct cli_state *cli,
-               uint16 setup, char *param, unsigned int param_len,
+               uint16_t setup, char *param, unsigned int param_len,
                TALLOC_CTX *ctx,
                size_t *pnum_eas,
                struct ea_struct **pea_list)
@@ -2165,7 +3543,7 @@ bool cli_get_ea_list_path(struct cli_state *cli, const char *path,
                size_t *pnum_eas,
                struct ea_struct **pea_list)
 {
-       uint16 setup = TRANSACT2_QPATHINFO;
+       uint16_t setup = TRANSACT2_QPATHINFO;
        unsigned int param_len = 0;
        char *param;
        char *p;
@@ -2192,12 +3570,12 @@ bool cli_get_ea_list_path(struct cli_state *cli, const char *path,
  Get an extended attribute list from an fnum.
 *********************************************************/
 
-bool cli_get_ea_list_fnum(struct cli_state *cli, int fnum,
+bool cli_get_ea_list_fnum(struct cli_state *cli, uint16_t fnum,
                TALLOC_CTX *ctx,
                size_t *pnum_eas,
                struct ea_struct **pea_list)
 {
-       uint16 setup = TRANSACT2_QFILEINFO;
+       uint16_t setup = TRANSACT2_QFILEINFO;
        char param[6];
 
        memset(param, 0, 6);
@@ -2208,13 +3586,13 @@ bool cli_get_ea_list_fnum(struct cli_state *cli, int fnum,
 }
 
 /****************************************************************************
- Convert open "flags" arg to uint32 on wire.
+ Convert open "flags" arg to uint32_t on wire.
 ****************************************************************************/
 
-static uint32 open_flags_to_wire(int flags)
+static uint32_t open_flags_to_wire(int flags)
 {
        int open_mode = flags & O_ACCMODE;
-       uint32 ret = 0;
+       uint32_t ret = 0;
 
        switch (open_mode) {
                case O_WRONLY:
@@ -2264,158 +3642,467 @@ static uint32 open_flags_to_wire(int flags)
  Open a file - POSIX semantics. Returns fnum. Doesn't request oplock.
 ****************************************************************************/
 
-static int cli_posix_open_internal(struct cli_state *cli, const char *fname, int flags, mode_t mode, bool is_dir)
+struct posix_open_state {
+       uint16_t setup;
+       uint8_t *param;
+       uint8_t data[18];
+       uint16_t fnum; /* Out */
+};
+
+static void cli_posix_open_internal_done(struct tevent_req *subreq)
 {
-       unsigned int data_len = 0;
-       unsigned int param_len = 0;
-       uint16 setup = TRANSACT2_SETPATHINFO;
-       char *param;
-       char data[18];
-       char *rparam=NULL, *rdata=NULL;
-       char *p;
-       int fnum = -1;
-       uint32 wire_flags = open_flags_to_wire(flags);
-       size_t srclen = 2*(strlen(fname)+1);
+       struct tevent_req *req = tevent_req_callback_data(
+                               subreq, struct tevent_req);
+       struct posix_open_state *state = tevent_req_data(req, struct posix_open_state);
+       NTSTATUS status;
+       uint8_t *data;
+       uint32_t num_data;
 
-       param = SMB_MALLOC_ARRAY(char, 6+srclen+2);
-       if (!param) {
-               return false;
+       status = cli_trans_recv(subreq, state, NULL, NULL, NULL, NULL, &data, &num_data);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
        }
-       memset(param, '\0', 6);
-       SSVAL(param,0, SMB_POSIX_PATH_OPEN);
-       p = &param[6];
+       if (num_data < 12) {
+               tevent_req_nterror(req, status);
+               return;
+       }
+       state->fnum = SVAL(data,2);
+       tevent_req_done(req);
+}
 
-       p += clistr_push(cli, p, fname, srclen, STR_TERMINATE);
-       param_len = PTR_DIFF(p, param);
+static struct tevent_req *cli_posix_open_internal_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *fname,
+                                       int flags,
+                                       mode_t mode,
+                                       bool is_dir)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct posix_open_state *state = NULL;
+       uint32_t wire_flags = open_flags_to_wire(flags);
+
+       req = tevent_req_create(mem_ctx, &state, struct posix_open_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       /* Setup setup word. */
+       SSVAL(&state->setup, 0, TRANSACT2_SETPATHINFO);
+
+       /* Setup param array. */
+       state->param = talloc_array(state, uint8_t, 6);
+       if (tevent_req_nomem(state->param, req)) {
+               return tevent_req_post(req, ev);
+       }
+       memset(state->param, '\0', 6);
+       SSVAL(state->param, 0, SMB_POSIX_PATH_OPEN);
 
+       state->param = trans2_bytes_push_str(state->param, cli_ucs2(cli), fname,
+                                  strlen(fname)+1, NULL);
+
+       if (tevent_req_nomem(state->param, req)) {
+               return tevent_req_post(req, ev);
+       }
+
+       /* Setup data words. */
        if (is_dir) {
                wire_flags &= ~(SMB_O_RDONLY|SMB_O_RDWR|SMB_O_WRONLY);
                wire_flags |= SMB_O_DIRECTORY;
        }
 
-       p = data;
-       SIVAL(p,0,0); /* No oplock. */
-       SIVAL(p,4,wire_flags);
-       SIVAL(p,8,unix_perms_to_wire(mode));
-       SIVAL(p,12,0); /* Top bits of perms currently undefined. */
-       SSVAL(p,16,SMB_NO_INFO_LEVEL_RETURNED); /* No info level returned. */
+       SIVAL(state->data,0,0); /* No oplock. */
+       SIVAL(state->data,4,wire_flags);
+       SIVAL(state->data,8,unix_perms_to_wire(mode));
+       SIVAL(state->data,12,0); /* Top bits of perms currently undefined. */
+       SSVAL(state->data,16,SMB_NO_INFO_LEVEL_RETURNED); /* No info level returned. */
+
+       subreq = cli_trans_send(state,                  /* mem ctx. */
+                               ev,                     /* event ctx. */
+                               cli,                    /* cli_state. */
+                               SMBtrans2,              /* cmd. */
+                               NULL,                   /* pipe name. */
+                               -1,                     /* fid. */
+                               0,                      /* function. */
+                               0,                      /* flags. */
+                               &state->setup,          /* setup. */
+                               1,                      /* num setup uint16_t words. */
+                               0,                      /* max returned setup. */
+                               state->param,           /* param. */
+                               talloc_get_size(state->param),/* num param. */
+                               2,                      /* max returned param. */
+                               state->data,            /* data. */
+                               18,                     /* num data. */
+                               12);                    /* max returned data. */
+
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_posix_open_internal_done, req);
+       return req;
+}
 
-       data_len = 18;
+struct tevent_req *cli_posix_open_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *fname,
+                                       int flags,
+                                       mode_t mode)
+{
+       return cli_posix_open_internal_send(mem_ctx, ev,
+                               cli, fname, flags, mode, false);
+}
 
-       if (!cli_send_trans(cli, SMBtrans2,
-                       NULL,                        /* name */
-                       -1, 0,                          /* fid, flags */
-                       &setup, 1, 0,                   /* setup, length, max */
-                       param, param_len, 2,            /* param, length, max */
-                       (char *)&data,  data_len, cli->max_xmit /* data, length, max */
-                       )) {
-               SAFE_FREE(param);
-               return -1;
+NTSTATUS cli_posix_open_recv(struct tevent_req *req, uint16_t *pfnum)
+{
+       struct posix_open_state *state = tevent_req_data(req, struct posix_open_state);
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
        }
+       *pfnum = state->fnum;
+       return NT_STATUS_OK;
+}
 
-       SAFE_FREE(param);
+/****************************************************************************
+ Open - POSIX semantics. Doesn't request oplock.
+****************************************************************************/
 
-       if (!cli_receive_trans(cli, SMBtrans2,
-               &rparam, &param_len,
-               &rdata, &data_len)) {
-                       return -1;
+NTSTATUS cli_posix_open(struct cli_state *cli, const char *fname,
+                       int flags, mode_t mode, uint16_t *pfnum)
+{
+
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
        }
 
-       fnum = SVAL(rdata,2);
+       req = cli_posix_open_send(frame,
+                               ev,
+                               cli,
+                               fname,
+                               flags,
+                               mode);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
 
-       SAFE_FREE(rdata);
-       SAFE_FREE(rparam);
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
 
-       return fnum;
-}
+       status = cli_posix_open_recv(req, pfnum);
 
-/****************************************************************************
- open - POSIX semantics.
-****************************************************************************/
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
+}
 
-int cli_posix_open(struct cli_state *cli, const char *fname, int flags, mode_t mode)
+struct tevent_req *cli_posix_mkdir_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *fname,
+                                       mode_t mode)
 {
-       return cli_posix_open_internal(cli, fname, flags, mode, False);
+       return cli_posix_open_internal_send(mem_ctx, ev,
+                               cli, fname, O_CREAT, mode, true);
 }
 
-/****************************************************************************
- mkdir - POSIX semantics.
-****************************************************************************/
+NTSTATUS cli_posix_mkdir_recv(struct tevent_req *req)
+{
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       return NT_STATUS_OK;
+}
 
-int cli_posix_mkdir(struct cli_state *cli, const char *fname, mode_t mode)
+NTSTATUS cli_posix_mkdir(struct cli_state *cli, const char *fname, mode_t mode)
 {
-       return (cli_posix_open_internal(cli, fname, O_CREAT, mode, True) == -1) ? -1 : 0;
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_posix_mkdir_send(frame,
+                               ev,
+                               cli,
+                               fname,
+                               mode);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_posix_mkdir_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  unlink or rmdir - POSIX semantics.
 ****************************************************************************/
 
-static bool cli_posix_unlink_internal(struct cli_state *cli, const char *fname, bool is_dir)
+struct unlink_state {
+       uint16_t setup;
+       uint8_t data[2];
+};
+
+static void cli_posix_unlink_internal_done(struct tevent_req *subreq)
 {
-       unsigned int data_len = 0;
-       unsigned int param_len = 0;
-       uint16 setup = TRANSACT2_SETPATHINFO;
-       char *param;
-       char data[2];
-       char *rparam=NULL, *rdata=NULL;
-       char *p;
-       size_t srclen = 2*(strlen(fname)+1);
+       struct tevent_req *req = tevent_req_callback_data(
+                               subreq, struct tevent_req);
+       struct unlink_state *state = tevent_req_data(req, struct unlink_state);
+       NTSTATUS status;
 
-       param = SMB_MALLOC_ARRAY(char, 6+srclen+2);
-       if (!param) {
-               return false;
+       status = cli_trans_recv(subreq, state, NULL, NULL, NULL, NULL, NULL, NULL);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               tevent_req_nterror(req, status);
+               return;
        }
-       memset(param, '\0', 6);
-       SSVAL(param,0, SMB_POSIX_PATH_UNLINK);
-       p = &param[6];
+       tevent_req_done(req);
+}
 
-       p += clistr_push(cli, p, fname, srclen, STR_TERMINATE);
-       param_len = PTR_DIFF(p, param);
+static struct tevent_req *cli_posix_unlink_internal_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *fname,
+                                       bool is_dir)
+{
+       struct tevent_req *req = NULL, *subreq = NULL;
+       struct unlink_state *state = NULL;
+       uint8_t *param = NULL;
 
-       SSVAL(data, 0, is_dir ? SMB_POSIX_UNLINK_DIRECTORY_TARGET :
-                       SMB_POSIX_UNLINK_FILE_TARGET);
-       data_len = 2;
+       req = tevent_req_create(mem_ctx, &state, struct unlink_state);
+       if (req == NULL) {
+               return NULL;
+       }
 
-       if (!cli_send_trans(cli, SMBtrans2,
-                       NULL,                        /* name */
-                       -1, 0,                          /* fid, flags */
-                       &setup, 1, 0,                   /* setup, length, max */
-                       param, param_len, 2,            /* param, length, max */
-                       (char *)&data,  data_len, cli->max_xmit /* data, length, max */
-                       )) {
-               SAFE_FREE(param);
-               return False;
+       /* Setup setup word. */
+       SSVAL(&state->setup, 0, TRANSACT2_SETPATHINFO);
+
+       /* Setup param array. */
+       param = talloc_array(state, uint8_t, 6);
+       if (tevent_req_nomem(param, req)) {
+               return tevent_req_post(req, ev);
        }
+       memset(param, '\0', 6);
+       SSVAL(param, 0, SMB_POSIX_PATH_UNLINK);
 
-       SAFE_FREE(param);
+       param = trans2_bytes_push_str(param, cli_ucs2(cli), fname,
+                                  strlen(fname)+1, NULL);
 
-       if (!cli_receive_trans(cli, SMBtrans2,
-               &rparam, &param_len,
-               &rdata, &data_len)) {
-                       return False;
+       if (tevent_req_nomem(param, req)) {
+               return tevent_req_post(req, ev);
        }
 
-       SAFE_FREE(rdata);
-       SAFE_FREE(rparam);
+       /* Setup data word. */
+       SSVAL(state->data, 0, is_dir ? SMB_POSIX_UNLINK_DIRECTORY_TARGET :
+                       SMB_POSIX_UNLINK_FILE_TARGET);
 
-       return True;
+       subreq = cli_trans_send(state,                  /* mem ctx. */
+                               ev,                     /* event ctx. */
+                               cli,                    /* cli_state. */
+                               SMBtrans2,              /* cmd. */
+                               NULL,                   /* pipe name. */
+                               -1,                     /* fid. */
+                               0,                      /* function. */
+                               0,                      /* flags. */
+                               &state->setup,          /* setup. */
+                               1,                      /* num setup uint16_t words. */
+                               0,                      /* max returned setup. */
+                               param,                  /* param. */
+                               talloc_get_size(param), /* num param. */
+                               2,                      /* max returned param. */
+                               state->data,            /* data. */
+                               2,                      /* num data. */
+                               0);                     /* max returned data. */
+
+       if (tevent_req_nomem(subreq, req)) {
+               return tevent_req_post(req, ev);
+       }
+       tevent_req_set_callback(subreq, cli_posix_unlink_internal_done, req);
+       return req;
+}
+
+struct tevent_req *cli_posix_unlink_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *fname)
+{
+       return cli_posix_unlink_internal_send(mem_ctx, ev, cli, fname, false);
+}
+
+NTSTATUS cli_posix_unlink_recv(struct tevent_req *req)
+{
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
  unlink - POSIX semantics.
 ****************************************************************************/
 
-bool cli_posix_unlink(struct cli_state *cli, const char *fname)
+NTSTATUS cli_posix_unlink(struct cli_state *cli, const char *fname)
 {
-       return cli_posix_unlink_internal(cli, fname, False);
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_posix_unlink_send(frame,
+                               ev,
+                               cli,
+                               fname);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_posix_unlink_recv(req);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }
 
 /****************************************************************************
  rmdir - POSIX semantics.
 ****************************************************************************/
 
-int cli_posix_rmdir(struct cli_state *cli, const char *fname)
+struct tevent_req *cli_posix_rmdir_send(TALLOC_CTX *mem_ctx,
+                                       struct event_context *ev,
+                                       struct cli_state *cli,
+                                       const char *fname)
+{
+       return cli_posix_unlink_internal_send(mem_ctx, ev, cli, fname, true);
+}
+
+NTSTATUS cli_posix_rmdir_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx)
+{
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       return NT_STATUS_OK;
+}
+
+NTSTATUS cli_posix_rmdir(struct cli_state *cli, const char *fname)
 {
-       return cli_posix_unlink_internal(cli, fname, True);
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct event_context *ev = NULL;
+       struct tevent_req *req = NULL;
+       NTSTATUS status = NT_STATUS_OK;
+
+       if (cli_has_async_calls(cli)) {
+               /*
+                * Can't use sync call while an async call is in flight
+                */
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fail;
+       }
+
+       ev = event_context_init(frame);
+       if (ev == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       req = cli_posix_rmdir_send(frame,
+                               ev,
+                               cli,
+                               fname);
+       if (req == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       if (!tevent_req_poll(req, ev)) {
+               status = map_nt_error_from_unix(errno);
+               goto fail;
+       }
+
+       status = cli_posix_rmdir_recv(req, frame);
+
+ fail:
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               cli_set_error(cli, status);
+       }
+       return status;
 }