Another attempt to fix bug #4308 - Excel save operation corrupts file ACLs.
[sfrench/samba-autobuild/.git] / source3 / smbd / posix_acls.c
index a1903ef4bbfcf326c426384bf25e6add6b19f9dc..951046c56253034882f4121894088a6e632fb1d8 100644 (file)
@@ -6,7 +6,7 @@
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "includes.h"
 
 extern struct current_user current_user;
-extern struct generic_mapping file_generic_mapping;
+extern const struct generic_mapping file_generic_mapping;
 
 #undef  DBGC_CLASS
 #define DBGC_CLASS DBGC_ACLS
@@ -47,8 +46,8 @@ typedef struct canon_ace {
        DOM_SID trustee;
        enum ace_owner owner_type;
        enum ace_attribute attr;
-       posix_id unix_ug; 
-       BOOL inherited;
+       posix_id unix_ug;
+       bool inherited;
 } canon_ace;
 
 #define ALL_ACE_PERMS (S_IRUSR|S_IWUSR|S_IXUSR)
@@ -80,11 +79,11 @@ typedef struct canon_ace {
 struct pai_entry {
        struct pai_entry *next, *prev;
        enum ace_owner owner_type;
-       posix_id unix_ug; 
+       posix_id unix_ug;
 };
-       
+
 struct pai_val {
-       BOOL pai_protected;
+       bool pai_protected;
        unsigned int num_entries;
        struct pai_entry *entry_list;
        unsigned int num_def_entries;
@@ -149,7 +148,7 @@ static unsigned int num_inherited_entries(canon_ace *ace_list)
  Create the on-disk format. Caller must free.
 ************************************************************************/
 
-static char *create_pai_buf(canon_ace *file_ace_list, canon_ace *dir_ace_list, BOOL pai_protected, size_t *store_size)
+static char *create_pai_buf(canon_ace *file_ace_list, canon_ace *dir_ace_list, bool pai_protected, size_t *store_size)
 {
        char *pai_buf = NULL;
        canon_ace *ace_list = NULL;
@@ -213,7 +212,7 @@ static char *create_pai_buf(canon_ace *file_ace_list, canon_ace *dir_ace_list, B
 ************************************************************************/
 
 static void store_inheritance_attributes(files_struct *fsp, canon_ace *file_ace_list,
-                                       canon_ace *dir_ace_list, BOOL pai_protected)
+                                       canon_ace *dir_ace_list, bool pai_protected)
 {
        int ret;
        size_t store_size;
@@ -230,7 +229,7 @@ static void store_inheritance_attributes(files_struct *fsp, canon_ace *file_ace_
        if (!pai_protected && num_inherited_entries(file_ace_list) == 0 && num_inherited_entries(dir_ace_list) == 0) {
                /* Instead just remove the attribute if it exists. */
                if (fsp->fh->fd != -1)
-                       SMB_VFS_FREMOVEXATTR(fsp, fsp->fh->fd, SAMBA_POSIX_INHERITANCE_EA_NAME);
+                       SMB_VFS_FREMOVEXATTR(fsp, SAMBA_POSIX_INHERITANCE_EA_NAME);
                else
                        SMB_VFS_REMOVEXATTR(fsp->conn, fsp->fsp_name, SAMBA_POSIX_INHERITANCE_EA_NAME);
                return;
@@ -239,7 +238,7 @@ static void store_inheritance_attributes(files_struct *fsp, canon_ace *file_ace_
        pai_buf = create_pai_buf(file_ace_list, dir_ace_list, pai_protected, &store_size);
 
        if (fsp->fh->fd != -1)
-               ret = SMB_VFS_FSETXATTR(fsp, fsp->fh->fd, SAMBA_POSIX_INHERITANCE_EA_NAME,
+               ret = SMB_VFS_FSETXATTR(fsp, SAMBA_POSIX_INHERITANCE_EA_NAME,
                                pai_buf, store_size, 0);
        else
                ret = SMB_VFS_SETXATTR(fsp->conn,fsp->fsp_name, SAMBA_POSIX_INHERITANCE_EA_NAME,
@@ -276,7 +275,7 @@ static void free_inherited_info(struct pai_val *pal)
  Was this ACL protected ?
 ************************************************************************/
 
-static BOOL get_protected_flag(struct pai_val *pal)
+static bool get_protected_flag(struct pai_val *pal)
 {
        if (!pal)
                return False;
@@ -287,7 +286,7 @@ static BOOL get_protected_flag(struct pai_val *pal)
  Was this ACE inherited ?
 ************************************************************************/
 
-static BOOL get_inherited_flag(struct pai_val *pal, canon_ace *ace_entry, BOOL default_ace)
+static bool get_inherited_flag(struct pai_val *pal, canon_ace *ace_entry, bool default_ace)
 {
        struct pai_entry *paie;
 
@@ -307,7 +306,7 @@ static BOOL get_inherited_flag(struct pai_val *pal, canon_ace *ace_entry, BOOL d
  Ensure an attribute just read is valid.
 ************************************************************************/
 
-static BOOL check_pai_ok(char *pai_buf, size_t pai_buf_data_size)
+static bool check_pai_ok(char *pai_buf, size_t pai_buf_data_size)
 {
        uint16 num_entries;
        uint16 num_def_entries;
@@ -431,7 +430,7 @@ static struct pai_val *create_pai_val(char *buf, size_t size)
  Load the user.SAMBA_PAI attribute.
 ************************************************************************/
 
-static struct pai_val *load_inherited_info(files_struct *fsp)
+static struct pai_val *fload_inherited_info(files_struct *fsp)
 {
        char *pai_buf;
        size_t pai_buf_size = 1024;
@@ -446,7 +445,7 @@ static struct pai_val *load_inherited_info(files_struct *fsp)
 
        do {
                if (fsp->fh->fd != -1)
-                       ret = SMB_VFS_FGETXATTR(fsp, fsp->fh->fd, SAMBA_POSIX_INHERITANCE_EA_NAME,
+                       ret = SMB_VFS_FGETXATTR(fsp, SAMBA_POSIX_INHERITANCE_EA_NAME,
                                        pai_buf, pai_buf_size);
                else
                        ret = SMB_VFS_GETXATTR(fsp->conn,fsp->fsp_name,SAMBA_POSIX_INHERITANCE_EA_NAME,
@@ -491,6 +490,71 @@ static struct pai_val *load_inherited_info(files_struct *fsp)
        return paiv;
 }
 
+/************************************************************************
+ Load the user.SAMBA_PAI attribute.
+************************************************************************/
+
+static struct pai_val *load_inherited_info(const struct connection_struct *conn,
+                                          const char *fname)
+{
+       char *pai_buf;
+       size_t pai_buf_size = 1024;
+       struct pai_val *paiv = NULL;
+       ssize_t ret;
+
+       if (!lp_map_acl_inherit(SNUM(conn))) {
+               return NULL;
+       }
+
+       if ((pai_buf = (char *)SMB_MALLOC(pai_buf_size)) == NULL) {
+               return NULL;
+       }
+
+       do {
+               ret = SMB_VFS_GETXATTR(conn, fname,
+                                      SAMBA_POSIX_INHERITANCE_EA_NAME,
+                                      pai_buf, pai_buf_size);
+
+               if (ret == -1) {
+                       if (errno != ERANGE) {
+                               break;
+                       }
+                       /* Buffer too small - enlarge it. */
+                       pai_buf_size *= 2;
+                       SAFE_FREE(pai_buf);
+                       if (pai_buf_size > 1024*1024) {
+                               return NULL; /* Limit malloc to 1mb. */
+                       }
+                       if ((pai_buf = (char *)SMB_MALLOC(pai_buf_size)) == NULL)
+                               return NULL;
+               }
+       } while (ret == -1);
+
+       DEBUG(10,("load_inherited_info: ret = %lu for file %s\n", (unsigned long)ret, fname));
+
+       if (ret == -1) {
+               /* No attribute or not supported. */
+#if defined(ENOATTR)
+               if (errno != ENOATTR)
+                       DEBUG(10,("load_inherited_info: Error %s\n", strerror(errno) ));
+#else
+               if (errno != ENOSYS)
+                       DEBUG(10,("load_inherited_info: Error %s\n", strerror(errno) ));
+#endif
+               SAFE_FREE(pai_buf);
+               return NULL;
+       }
+
+       paiv = create_pai_val(pai_buf, ret);
+
+       if (paiv && paiv->pai_protected) {
+               DEBUG(10,("load_inherited_info: ACL is protected for file %s\n", fname));
+       }
+
+       SAFE_FREE(pai_buf);
+       return paiv;
+}
+
 /****************************************************************************
  Functions to manipulate the internal ACE format.
 ****************************************************************************/
@@ -547,10 +611,8 @@ static canon_ace *dup_canon_ace( canon_ace *src_ace)
 
 static void print_canon_ace(canon_ace *pace, int num)
 {
-       fstring str;
-
        dbgtext( "canon_ace index %d. Type = %s ", num, pace->attr == ALLOW_ACE ? "allow" : "deny" );
-       dbgtext( "SID = %s ", sid_to_string( str, &pace->trustee));
+       dbgtext( "SID = %s ", sid_string_dbg(&pace->trustee));
        if (pace->owner_type == UID_ACE) {
                const char *u_name = uidtoname(pace->unix_ug.uid);
                dbgtext( "uid %u (%s) ", (unsigned int)pace->unix_ug.uid, u_name );
@@ -658,16 +720,38 @@ static int map_acl_perms_to_permset(connection_struct *conn, mode_t mode, SMB_AC
        }
        return 0;
 }
+
 /****************************************************************************
  Function to create owner and group SIDs from a SMB_STRUCT_STAT.
 ****************************************************************************/
 
-static void create_file_sids(SMB_STRUCT_STAT *psbuf, DOM_SID *powner_sid, DOM_SID *pgroup_sid)
+void create_file_sids(const SMB_STRUCT_STAT *psbuf, DOM_SID *powner_sid, DOM_SID *pgroup_sid)
 {
        uid_to_sid( powner_sid, psbuf->st_uid );
        gid_to_sid( pgroup_sid, psbuf->st_gid );
 }
 
+/****************************************************************************
+ Is the identity in two ACEs equal ? Check both SID and uid/gid.
+****************************************************************************/
+
+static bool identity_in_ace_equal(canon_ace *ace1, canon_ace *ace2)
+{
+       if (sid_equal(&ace1->trustee, &ace2->trustee)) {
+               return True;
+       }
+       if (ace1->owner_type == ace2->owner_type) {
+               if (ace1->owner_type == UID_ACE &&
+                               ace1->unix_ug.uid == ace2->unix_ug.uid) {
+                       return True;
+               } else if (ace1->owner_type == GID_ACE &&
+                               ace1->unix_ug.gid == ace2->unix_ug.gid) {
+                       return True;
+               }
+       }
+       return False;
+}
+
 /****************************************************************************
  Merge aces with a common sid - if both are allow or deny, OR the permissions together and
  delete the second one. If the first is deny, mask the permissions off and delete the allow
@@ -695,7 +779,7 @@ static void merge_aces( canon_ace **pp_list_head )
 
                        curr_ace_next = curr_ace->next; /* Save the link in case of delete. */
 
-                       if (sid_equal(&curr_ace->trustee, &curr_ace_outer->trustee) &&
+                       if (identity_in_ace_equal(curr_ace, curr_ace_outer) &&
                                (curr_ace->attr == curr_ace_outer->attr)) {
 
                                if( DEBUGLVL( 10 )) {
@@ -735,7 +819,7 @@ static void merge_aces( canon_ace **pp_list_head )
                         * we've put on the ACL, we know the deny must be the first one.
                         */
 
-                       if (sid_equal(&curr_ace->trustee, &curr_ace_outer->trustee) &&
+                       if (identity_in_ace_equal(curr_ace, curr_ace_outer) &&
                                (curr_ace_outer->attr == DENY_ACE) && (curr_ace->attr == ALLOW_ACE)) {
 
                                if( DEBUGLVL( 10 )) {
@@ -786,7 +870,7 @@ static void merge_aces( canon_ace **pp_list_head )
  Check if we need to return NT4.x compatible ACL entries.
 ****************************************************************************/
 
-static BOOL nt4_compatible_acls(void)
+bool nt4_compatible_acls(void)
 {
        int compat = lp_acl_compatibility();
 
@@ -806,20 +890,22 @@ static BOOL nt4_compatible_acls(void)
  not get. Deny entries are implicit on get with ace->perms = 0.
 ****************************************************************************/
 
-static SEC_ACCESS map_canon_ace_perms(int snum, int *pacl_type, DOM_SID *powner_sid, canon_ace *ace, BOOL directory_ace)
+static uint32_t map_canon_ace_perms(int snum,
+                               enum security_ace_type *pacl_type,
+                               mode_t perms,
+                               bool directory_ace)
 {
-       SEC_ACCESS sa;
-       uint32 nt_mask = 0;
+       uint32_t nt_mask = 0;
 
        *pacl_type = SEC_ACE_TYPE_ACCESS_ALLOWED;
 
-       if (lp_acl_map_full_control(snum) && ((ace->perms & ALL_ACE_PERMS) == ALL_ACE_PERMS)) {
+       if (lp_acl_map_full_control(snum) && ((perms & ALL_ACE_PERMS) == ALL_ACE_PERMS)) {
                if (directory_ace) {
                        nt_mask = UNIX_DIRECTORY_ACCESS_RWX;
                } else {
-                       nt_mask = UNIX_ACCESS_RWX;
+                       nt_mask = (UNIX_ACCESS_RWX & ~DELETE_ACCESS);
                }
-       } else if ((ace->perms & ALL_ACE_PERMS) == (mode_t)0) {
+       } else if ((perms & ALL_ACE_PERMS) == (mode_t)0) {
                /*
                 * Windows NT refuses to display ACEs with no permissions in them (but
                 * they are perfectly legal with Windows 2000). If the ACE has empty
@@ -835,21 +921,20 @@ static SEC_ACCESS map_canon_ace_perms(int snum, int *pacl_type, DOM_SID *powner_
                        nt_mask = 0;
        } else {
                if (directory_ace) {
-                       nt_mask |= ((ace->perms & S_IRUSR) ? UNIX_DIRECTORY_ACCESS_R : 0 );
-                       nt_mask |= ((ace->perms & S_IWUSR) ? UNIX_DIRECTORY_ACCESS_W : 0 );
-                       nt_mask |= ((ace->perms & S_IXUSR) ? UNIX_DIRECTORY_ACCESS_X : 0 );
+                       nt_mask |= ((perms & S_IRUSR) ? UNIX_DIRECTORY_ACCESS_R : 0 );
+                       nt_mask |= ((perms & S_IWUSR) ? UNIX_DIRECTORY_ACCESS_W : 0 );
+                       nt_mask |= ((perms & S_IXUSR) ? UNIX_DIRECTORY_ACCESS_X : 0 );
                } else {
-                       nt_mask |= ((ace->perms & S_IRUSR) ? UNIX_ACCESS_R : 0 );
-                       nt_mask |= ((ace->perms & S_IWUSR) ? UNIX_ACCESS_W : 0 );
-                       nt_mask |= ((ace->perms & S_IXUSR) ? UNIX_ACCESS_X : 0 );
+                       nt_mask |= ((perms & S_IRUSR) ? UNIX_ACCESS_R : 0 );
+                       nt_mask |= ((perms & S_IWUSR) ? UNIX_ACCESS_W : 0 );
+                       nt_mask |= ((perms & S_IXUSR) ? UNIX_ACCESS_X : 0 );
                }
        }
 
        DEBUG(10,("map_canon_ace_perms: Mapped (UNIX) %x to (NT) %x\n",
-                       (unsigned int)ace->perms, (unsigned int)nt_mask ));
+                       (unsigned int)perms, (unsigned int)nt_mask ));
 
-       init_sec_access(&sa,nt_mask);
-       return sa;
+       return nt_mask;
 }
 
 /****************************************************************************
@@ -860,36 +945,36 @@ static SEC_ACCESS map_canon_ace_perms(int snum, int *pacl_type, DOM_SID *powner_
 #define FILE_SPECIFIC_WRITE_BITS (FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_WRITE_EA|FILE_WRITE_ATTRIBUTES)
 #define FILE_SPECIFIC_EXECUTE_BITS (FILE_EXECUTE)
 
-static mode_t map_nt_perms( SEC_ACCESS sec_access, int type)
+static mode_t map_nt_perms( uint32 *mask, int type)
 {
        mode_t mode = 0;
 
        switch(type) {
        case S_IRUSR:
-               if(sec_access.mask & GENERIC_ALL_ACCESS)
+               if((*mask) & GENERIC_ALL_ACCESS)
                        mode = S_IRUSR|S_IWUSR|S_IXUSR;
                else {
-                       mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRUSR : 0;
-                       mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWUSR : 0;
-                       mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXUSR : 0;
+                       mode |= ((*mask) & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRUSR : 0;
+                       mode |= ((*mask) & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWUSR : 0;
+                       mode |= ((*mask) & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXUSR : 0;
                }
                break;
        case S_IRGRP:
-               if(sec_access.mask & GENERIC_ALL_ACCESS)
+               if((*mask) & GENERIC_ALL_ACCESS)
                        mode = S_IRGRP|S_IWGRP|S_IXGRP;
                else {
-                       mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRGRP : 0;
-                       mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWGRP : 0;
-                       mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXGRP : 0;
+                       mode |= ((*mask) & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRGRP : 0;
+                       mode |= ((*mask) & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWGRP : 0;
+                       mode |= ((*mask) & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXGRP : 0;
                }
                break;
        case S_IROTH:
-               if(sec_access.mask & GENERIC_ALL_ACCESS)
+               if((*mask) & GENERIC_ALL_ACCESS)
                        mode = S_IROTH|S_IWOTH|S_IXOTH;
                else {
-                       mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IROTH : 0;
-                       mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWOTH : 0;
-                       mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXOTH : 0;
+                       mode |= ((*mask) & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IROTH : 0;
+                       mode |= ((*mask) & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWOTH : 0;
+                       mode |= ((*mask) & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXOTH : 0;
                }
                break;
        }
@@ -901,7 +986,7 @@ static mode_t map_nt_perms( SEC_ACCESS sec_access, int type)
  Unpack a SEC_DESC into a UNIX owner and group.
 ****************************************************************************/
 
-BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp, uint32 security_info_sent, SEC_DESC *psd)
+NTSTATUS unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp, uint32 security_info_sent, const SEC_DESC *psd)
 {
        DOM_SID owner_sid;
        DOM_SID grp_sid;
@@ -911,7 +996,7 @@ BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp, uint32 security_info_
 
        if(security_info_sent == 0) {
                DEBUG(0,("unpack_nt_owners: no security info sent !\n"));
-               return True;
+               return NT_STATUS_OK;
        }
 
        /*
@@ -938,10 +1023,12 @@ BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp, uint32 security_info_
                        } else {
                                DEBUG(3,("unpack_nt_owners: unable to validate"
                                         " owner sid for %s\n",
-                                        sid_string_static(&owner_sid)));
-                               return False;
+                                        sid_string_dbg(&owner_sid)));
+                               return NT_STATUS_INVALID_OWNER;
                        }
                }
+               DEBUG(3,("unpack_nt_owners: owner sid mapped to uid %u\n",
+                        (unsigned int)*puser ));
        }
 
        /*
@@ -950,7 +1037,7 @@ BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp, uint32 security_info_
         */
 
        if (security_info_sent & GROUP_SECURITY_INFORMATION) {
-               sid_copy(&grp_sid, psd->grp_sid);
+               sid_copy(&grp_sid, psd->group_sid);
                if (!sid_to_gid( &grp_sid, pgrp)) {
                        if (lp_force_unknown_acl_user(snum)) {
                                /* this allows take group ownership to work
@@ -959,34 +1046,37 @@ BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp, uint32 security_info_
                        } else {
                                DEBUG(3,("unpack_nt_owners: unable to validate"
                                         " group sid.\n"));
-                               return False;
+                               return NT_STATUS_INVALID_OWNER;
                        }
                }
-       }
+               DEBUG(3,("unpack_nt_owners: group sid mapped to gid %u\n",
+                        (unsigned int)*pgrp));
+       }
 
        DEBUG(5,("unpack_nt_owners: owner_sids validated.\n"));
 
-       return True;
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
  Ensure the enforced permissions for this share apply.
 ****************************************************************************/
 
-static void apply_default_perms(files_struct *fsp, canon_ace *pace, mode_t type)
+static void apply_default_perms(const struct share_params *params,
+                               const bool is_directory, canon_ace *pace,
+                               mode_t type)
 {
-       int snum = SNUM(fsp->conn);
        mode_t and_bits = (mode_t)0;
        mode_t or_bits = (mode_t)0;
 
        /* Get the initial bits to apply. */
 
-       if (fsp->is_directory) {
-               and_bits = lp_dir_security_mask(snum);
-               or_bits = lp_force_dir_security_mode(snum);
+       if (is_directory) {
+               and_bits = lp_dir_security_mask(params->service);
+               or_bits = lp_force_dir_security_mode(params->service);
        } else {
-               and_bits = lp_security_mask(snum);
-               or_bits = lp_force_security_mode(snum);
+               and_bits = lp_security_mask(params->service);
+               or_bits = lp_force_security_mode(params->service);
        }
 
        /* Now bounce them into the S_USR space. */     
@@ -994,7 +1084,7 @@ static void apply_default_perms(files_struct *fsp, canon_ace *pace, mode_t type)
        case S_IRUSR:
                /* Ensure owner has read access. */
                pace->perms |= S_IRUSR;
-               if (fsp->is_directory)
+               if (is_directory)
                        pace->perms |= (S_IWUSR|S_IXUSR);
                and_bits = unix_perms_to_acl_perms(and_bits, S_IRUSR, S_IWUSR, S_IXUSR);
                or_bits = unix_perms_to_acl_perms(or_bits, S_IRUSR, S_IWUSR, S_IXUSR);
@@ -1017,9 +1107,9 @@ static void apply_default_perms(files_struct *fsp, canon_ace *pace, mode_t type)
  expensive and will need optimisation. A *lot* of optimisation :-). JRA.
 ****************************************************************************/
 
-static BOOL uid_entry_in_group( canon_ace *uid_ace, canon_ace *group_ace )
+static bool uid_entry_in_group( canon_ace *uid_ace, canon_ace *group_ace )
 {
-       fstring u_name;
+       const char *u_name = NULL;
 
        /* "Everyone" always matches every uid. */
 
@@ -1031,7 +1121,11 @@ static BOOL uid_entry_in_group( canon_ace *uid_ace, canon_ace *group_ace )
        if (uid_ace->unix_ug.uid == current_user.ut.uid && group_ace->unix_ug.gid == current_user.ut.gid)
                return True;
 
-       fstrcpy(u_name, uidtoname(uid_ace->unix_ug.uid));
+       /* u_name talloc'ed off tos. */
+       u_name = uidtoname(uid_ace->unix_ug.uid);
+       if (!u_name) {
+               return False;
+       }
        return user_in_group_sid(u_name, &group_ace->trustee);
 }
 
@@ -1045,24 +1139,25 @@ static BOOL uid_entry_in_group( canon_ace *uid_ace, canon_ace *group_ace )
  type.
 ****************************************************************************/
 
-static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
-                                                       files_struct *fsp,
+static bool ensure_canon_entry_valid(canon_ace **pp_ace,
+                                    const struct share_params *params,
+                                    const bool is_directory,
                                                        const DOM_SID *pfile_owner_sid,
                                                        const DOM_SID *pfile_grp_sid,
-                                                       SMB_STRUCT_STAT *pst,
-                                                       BOOL setting_acl)
+                                                       const SMB_STRUCT_STAT *pst,
+                                                       bool setting_acl)
 {
        canon_ace *pace;
-       BOOL got_user = False;
-       BOOL got_grp = False;
-       BOOL got_other = False;
+       bool got_user = False;
+       bool got_grp = False;
+       bool got_other = False;
        canon_ace *pace_other = NULL;
 
        for (pace = *pp_ace; pace; pace = pace->next) {
                if (pace->type == SMB_ACL_USER_OBJ) {
 
                        if (setting_acl)
-                               apply_default_perms(fsp, pace, S_IRUSR);
+                               apply_default_perms(params, is_directory, pace, S_IRUSR);
                        got_user = True;
 
                } else if (pace->type == SMB_ACL_GROUP_OBJ) {
@@ -1072,7 +1167,7 @@ static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
                         */
 
                        if (setting_acl)
-                               apply_default_perms(fsp, pace, S_IRGRP);
+                               apply_default_perms(params, is_directory, pace, S_IRGRP);
                        got_grp = True;
 
                } else if (pace->type == SMB_ACL_OTHER) {
@@ -1082,7 +1177,7 @@ static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
                         */
 
                        if (setting_acl)
-                               apply_default_perms(fsp, pace, S_IROTH);
+                               apply_default_perms(params, is_directory, pace, S_IROTH);
                        got_other = True;
                        pace_other = pace;
                }
@@ -1105,7 +1200,7 @@ static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
                        /* See if the owning user is in any of the other groups in
                           the ACE. If so, OR in the permissions from that group. */
 
-                       BOOL group_matched = False;
+                       bool group_matched = False;
                        canon_ace *pace_iter;
 
                        for (pace_iter = *pp_ace; pace_iter; pace_iter = pace_iter->next) {
@@ -1125,7 +1220,7 @@ static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
                                        pace->perms = 0;
                        }
 
-                       apply_default_perms(fsp, pace, S_IRUSR);
+                       apply_default_perms(params, is_directory, pace, S_IRUSR);
                } else {
                        pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IRUSR, S_IWUSR, S_IXUSR);
                }
@@ -1151,7 +1246,7 @@ static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
                                pace->perms = pace_other->perms;
                        else
                                pace->perms = 0;
-                       apply_default_perms(fsp, pace, S_IRGRP);
+                       apply_default_perms(params, is_directory, pace, S_IRGRP);
                } else {
                        pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IRGRP, S_IWGRP, S_IXGRP);
                }
@@ -1173,7 +1268,7 @@ static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
                pace->attr = ALLOW_ACE;
                if (setting_acl) {
                        pace->perms = 0;
-                       apply_default_perms(fsp, pace, S_IROTH);
+                       apply_default_perms(params, is_directory, pace, S_IROTH);
                } else
                        pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IROTH, S_IWOTH, S_IXOTH);
 
@@ -1191,7 +1286,7 @@ static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
 
 static void check_owning_objs(canon_ace *ace, DOM_SID *pfile_owner_sid, DOM_SID *pfile_grp_sid)
 {
-       BOOL got_user_obj, got_group_obj;
+       bool got_user_obj, got_group_obj;
        canon_ace *current_ace;
        int i, entries;
 
@@ -1232,19 +1327,20 @@ static void check_owning_objs(canon_ace *ace, DOM_SID *pfile_owner_sid, DOM_SID
  Unpack a SEC_DESC into two canonical ace lists.
 ****************************************************************************/
 
-static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
-                                                       DOM_SID *pfile_owner_sid,
-                                                       DOM_SID *pfile_grp_sid,
-                                                       canon_ace **ppfile_ace, canon_ace **ppdir_ace,
-                                                       SEC_ACL *dacl)
+static bool create_canon_ace_lists(files_struct *fsp,
+                                       SMB_STRUCT_STAT *pst,
+                                       DOM_SID *pfile_owner_sid,
+                                       DOM_SID *pfile_grp_sid,
+                                       canon_ace **ppfile_ace,
+                                       canon_ace **ppdir_ace,
+                                       const SEC_ACL *dacl)
 {
-       BOOL all_aces_are_inherit_only = (fsp->is_directory ? True : False);
+       bool all_aces_are_inherit_only = (fsp->is_directory ? True : False);
        canon_ace *file_ace = NULL;
        canon_ace *dir_ace = NULL;
-       canon_ace *tmp_ace = NULL;
        canon_ace *current_ace = NULL;
-       BOOL got_dir_allow = False;
-       BOOL got_file_allow = False;
+       bool got_dir_allow = False;
+       bool got_file_allow = False;
        int i, j;
 
        *ppfile_ace = NULL;
@@ -1255,7 +1351,7 @@ static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
         */
 
        for(i = 0; i < dacl->num_aces; i++) {
-               SEC_ACE *psa = &dacl->ace[i];
+               SEC_ACE *psa = &dacl->aces[i];
 
                if((psa->type != SEC_ACE_TYPE_ACCESS_ALLOWED) && (psa->type != SEC_ACE_TYPE_ACCESS_DENIED)) {
                        DEBUG(3,("create_canon_ace_lists: unable to set anything but an ALLOW or DENY ACE.\n"));
@@ -1274,12 +1370,12 @@ static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
                         * Convert GENERIC bits to specific bits.
                         */
  
-                       se_map_generic(&psa->info.mask, &file_generic_mapping);
+                       se_map_generic(&psa->access_mask, &file_generic_mapping);
 
-                       psa->info.mask &= (UNIX_ACCESS_NONE|FILE_ALL_ACCESS);
+                       psa->access_mask &= (UNIX_ACCESS_NONE|FILE_ALL_ACCESS);
 
-                       if(psa->info.mask != UNIX_ACCESS_NONE)
-                               psa->info.mask &= ~UNIX_ACCESS_NONE;
+                       if(psa->access_mask != UNIX_ACCESS_NONE)
+                               psa->access_mask &= ~UNIX_ACCESS_NONE;
                }
        }
 
@@ -1292,12 +1388,12 @@ static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
         */
 
        for(i = 0; i < dacl->num_aces; i++) {
-               SEC_ACE *psa1 = &dacl->ace[i];
+               SEC_ACE *psa1 = &dacl->aces[i];
 
                for (j = i + 1; j < dacl->num_aces; j++) {
-                       SEC_ACE *psa2 = &dacl->ace[j];
+                       SEC_ACE *psa2 = &dacl->aces[j];
 
-                       if (psa1->info.mask != psa2->info.mask)
+                       if (psa1->access_mask != psa2->access_mask)
                                continue;
 
                        if (!sid_equal(&psa1->trustee, &psa2->trustee))
@@ -1312,29 +1408,18 @@ static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
 
                                psa1->flags |= (psa2->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT));
                                psa2->flags &= ~(SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT);
-                               
+
                        } else if (psa2->flags & SEC_ACE_FLAG_INHERIT_ONLY) {
 
                                psa2->flags |= (psa1->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT));
                                psa1->flags &= ~(SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT);
-                               
+
                        }
                }
        }
 
        for(i = 0; i < dacl->num_aces; i++) {
-               SEC_ACE *psa = &dacl->ace[i];
-
-               /*
-                * Ignore non-mappable SIDs (NT Authority, BUILTIN etc).
-                */
-
-               if (non_mappable_sid(&psa->trustee)) {
-                       fstring str;
-                       DEBUG(10,("create_canon_ace_lists: ignoring non-mappable SID %s\n",
-                               sid_to_string(str, &psa->trustee) ));
-                       continue;
-               }
+               SEC_ACE *psa = &dacl->aces[i];
 
                /*
                 * Create a cannon_ace entry representing this NT DACL ACE.
@@ -1389,17 +1474,40 @@ static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
 
                } else if (sid_to_uid( &current_ace->trustee, &current_ace->unix_ug.uid)) {
                        current_ace->owner_type = UID_ACE;
-                       current_ace->type = SMB_ACL_USER;
+                       /* If it's the owning user, this is a user_obj, not
+                        * a user. */
+                       if (current_ace->unix_ug.uid == pst->st_uid) {
+                               current_ace->type = SMB_ACL_USER_OBJ;
+                       } else {
+                               current_ace->type = SMB_ACL_USER;
+                       }
                } else if (sid_to_gid( &current_ace->trustee, &current_ace->unix_ug.gid)) {
                        current_ace->owner_type = GID_ACE;
-                       current_ace->type = SMB_ACL_GROUP;
+                       /* If it's the primary group, this is a group_obj, not
+                        * a group. */
+                       if (current_ace->unix_ug.gid == pst->st_gid) {
+                               current_ace->type = SMB_ACL_GROUP_OBJ;
+                       } else {
+                               current_ace->type = SMB_ACL_GROUP;
+                       }
                } else {
-                       fstring str;
+                       /*
+                        * Silently ignore map failures in non-mappable SIDs (NT Authority, BUILTIN etc).
+                        */
+
+                       if (non_mappable_sid(&psa->trustee)) {
+                               DEBUG(10, ("create_canon_ace_lists: ignoring "
+                                          "non-mappable SID %s\n",
+                                          sid_string_dbg(&psa->trustee)));
+                               SAFE_FREE(current_ace);
+                               continue;
+                       }
 
                        free_canon_ace_list(file_ace);
                        free_canon_ace_list(dir_ace);
-                       DEBUG(0,("create_canon_ace_lists: unable to map SID %s to uid or gid.\n",
-                               sid_to_string(str, &current_ace->trustee) ));
+                       DEBUG(0, ("create_canon_ace_lists: unable to map SID "
+                                 "%s to uid or gid.\n",
+                                 sid_string_dbg(&current_ace->trustee)));
                        SAFE_FREE(current_ace);
                        return False;
                }
@@ -1409,7 +1517,7 @@ static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
                 * S_I(R|W|X)USR bits.
                 */
 
-               current_ace->perms |= map_nt_perms( psa->info, S_IRUSR);
+               current_ace->perms |= map_nt_perms( &psa->access_mask, S_IRUSR);
                current_ace->attr = (psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED) ? ALLOW_ACE : DENY_ACE;
                current_ace->inherited = ((psa->flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False);
 
@@ -1429,7 +1537,7 @@ static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
                        if ((psa->flags & (SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT)) ==
                                (SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT)) {
 
-                               DLIST_ADD_END(dir_ace, current_ace, tmp_ace);
+                               DLIST_ADD_END(dir_ace, current_ace, canon_ace *);
 
                                /*
                                 * Note if this was an allow ace. We can't process
@@ -1487,7 +1595,7 @@ Deny entry after Allow entry. Failing to set on file %s.\n", fsp->fsp_name ));
                 */
 
                if (current_ace && !(psa->flags & SEC_ACE_FLAG_INHERIT_ONLY)) {
-                       DLIST_ADD_END(file_ace, current_ace, tmp_ace);
+                       DLIST_ADD_END(file_ace, current_ace, canon_ace *);
 
                        /*
                         * Note if this was an allow ace. We can't process
@@ -1734,7 +1842,6 @@ static void process_deny_list( canon_ace **pp_ace_list )
        for (curr_ace = ace_list; curr_ace; curr_ace = curr_ace_next) {
                mode_t new_perms = (mode_t)0;
                canon_ace *allow_ace_p;
-               canon_ace *tmp_ace;
 
                curr_ace_next = curr_ace->next; /* So we can't lose the link. */
 
@@ -1753,7 +1860,7 @@ static void process_deny_list( canon_ace **pp_ace_list )
 
                        curr_ace->attr = ALLOW_ACE;
                        curr_ace->perms = (mode_t)0;
-                       DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
+                       DLIST_DEMOTE(ace_list, curr_ace, canon_ace *);
                        continue;
                }
 
@@ -1778,13 +1885,12 @@ static void process_deny_list( canon_ace **pp_ace_list )
 
                curr_ace->attr = ALLOW_ACE;
                curr_ace->perms = (new_perms & ~curr_ace->perms);
-               DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
+               DLIST_DEMOTE(ace_list, curr_ace, canon_ace *);
        }
 
        /* Pass 3 above - deal with deny group entries. */
 
        for (curr_ace = ace_list; curr_ace; curr_ace = curr_ace_next) {
-               canon_ace *tmp_ace;
                canon_ace *allow_ace_p;
                canon_ace *allow_everyone_p = NULL;
 
@@ -1826,8 +1932,7 @@ static void process_deny_list( canon_ace **pp_ace_list )
                        curr_ace->perms = allow_everyone_p->perms & ~curr_ace->perms;
                else
                        curr_ace->perms = (mode_t)0;
-               DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
-
+               DLIST_DEMOTE(ace_list, curr_ace, canon_ace *);
        }
 
        /* Doing this fourth pass allows Windows semantics to be layered
@@ -1877,12 +1982,15 @@ static void process_deny_list( canon_ace **pp_ace_list )
  no user/group/world entries.
 ****************************************************************************/
 
-static mode_t create_default_mode(files_struct *fsp, BOOL interitable_mode)
+static mode_t create_default_mode(files_struct *fsp, bool interitable_mode)
 {
        int snum = SNUM(fsp->conn);
        mode_t and_bits = (mode_t)0;
        mode_t or_bits = (mode_t)0;
-       mode_t mode = interitable_mode ? unix_mode( fsp->conn, FILE_ATTRIBUTE_ARCHIVE, fsp->fsp_name, False) : S_IRUSR;
+       mode_t mode = interitable_mode
+               ? unix_mode( fsp->conn, FILE_ATTRIBUTE_ARCHIVE, fsp->fsp_name,
+                            NULL )
+               : S_IRUSR;
 
        if (fsp->is_directory)
                mode |= (S_IWUSR|S_IXUSR);
@@ -1908,12 +2016,14 @@ static mode_t create_default_mode(files_struct *fsp, BOOL interitable_mode)
  succeeding.
 ****************************************************************************/
 
-static BOOL unpack_canon_ace(files_struct *fsp, 
-                                                       SMB_STRUCT_STAT *pst,
-                                                       DOM_SID *pfile_owner_sid,
-                                                       DOM_SID *pfile_grp_sid,
-                                                       canon_ace **ppfile_ace, canon_ace **ppdir_ace,
-                                                       uint32 security_info_sent, SEC_DESC *psd)
+static bool unpack_canon_ace(files_struct *fsp,
+                               SMB_STRUCT_STAT *pst,
+                               DOM_SID *pfile_owner_sid,
+                               DOM_SID *pfile_grp_sid,
+                               canon_ace **ppfile_ace,
+                               canon_ace **ppdir_ace,
+                               uint32 security_info_sent,
+                               const SEC_DESC *psd)
 {
        canon_ace *file_ace = NULL;
        canon_ace *dir_ace = NULL;
@@ -1985,7 +2095,7 @@ static BOOL unpack_canon_ace(files_struct *fsp,
 
        pst->st_mode = create_default_mode(fsp, False);
 
-       if (!ensure_canon_entry_valid(&file_ace, fsp, pfile_owner_sid, pfile_grp_sid, pst, True)) {
+       if (!ensure_canon_entry_valid(&file_ace, fsp->conn->params, fsp->is_directory, pfile_owner_sid, pfile_grp_sid, pst, True)) {
                free_canon_ace_list(file_ace);
                free_canon_ace_list(dir_ace);
                return False;
@@ -2001,7 +2111,7 @@ static BOOL unpack_canon_ace(files_struct *fsp,
 
        pst->st_mode = create_default_mode(fsp, True);
 
-       if (dir_ace && !ensure_canon_entry_valid(&dir_ace, fsp, pfile_owner_sid, pfile_grp_sid, pst, True)) {
+       if (dir_ace && !ensure_canon_entry_valid(&dir_ace, fsp->conn->params, fsp->is_directory, pfile_owner_sid, pfile_grp_sid, pst, True)) {
                free_canon_ace_list(file_ace);
                free_canon_ace_list(dir_ace);
                return False;
@@ -2035,7 +2145,7 @@ static BOOL unpack_canon_ace(files_struct *fsp,
  But NT cannot display this in their ACL editor !
 ********************************************************************************/
 
-static void arrange_posix_perms( char *filename, canon_ace **pp_list_head)
+static void arrange_posix_perms(const char *filename, canon_ace **pp_list_head)
 {
        canon_ace *list_head = *pp_list_head;
        canon_ace *owner_ace = NULL;
@@ -2067,7 +2177,7 @@ static void arrange_posix_perms( char *filename, canon_ace **pp_list_head)
        }
 
        if (other_ace) {
-               DLIST_DEMOTE(list_head, other_ace, ace);
+               DLIST_DEMOTE(list_head, other_ace, canon_ace *);
        }
 
        /* We have probably changed the head of the list. */
@@ -2079,10 +2189,11 @@ static void arrange_posix_perms( char *filename, canon_ace **pp_list_head)
  Create a linked list of canonical ACE entries.
 ****************************************************************************/
 
-static canon_ace *canonicalise_acl( files_struct *fsp, SMB_ACL_T posix_acl, SMB_STRUCT_STAT *psbuf,
-                                       const DOM_SID *powner, const DOM_SID *pgroup, struct pai_val *pal, SMB_ACL_TYPE_T the_acl_type)
+static canon_ace *canonicalise_acl(struct connection_struct *conn,
+                                  const char *fname, SMB_ACL_T posix_acl,
+                                  const SMB_STRUCT_STAT *psbuf,
+                                  const DOM_SID *powner, const DOM_SID *pgroup, struct pai_val *pal, SMB_ACL_TYPE_T the_acl_type)
 {
-       connection_struct *conn = fsp->conn;
        mode_t acl_mask = (S_IRUSR|S_IWUSR|S_IXUSR);
        canon_ace *list_head = NULL;
        canon_ace *ace = NULL;
@@ -2098,9 +2209,7 @@ static canon_ace *canonicalise_acl( files_struct *fsp, SMB_ACL_T posix_acl, SMB_
                posix_id unix_ug;
                enum ace_owner owner_type;
 
-               /* get_next... */
-               if (entry_id == SMB_ACL_FIRST_ENTRY)
-                       entry_id = SMB_ACL_NEXT_ENTRY;
+               entry_id = SMB_ACL_NEXT_ENTRY;
 
                /* Is this a MASK entry ? */
                if (SMB_VFS_SYS_ACL_GET_TAG_TYPE(conn, entry, &tagtype) == -1)
@@ -2197,7 +2306,9 @@ static canon_ace *canonicalise_acl( files_struct *fsp, SMB_ACL_T posix_acl, SMB_
         * This next call will ensure we have at least a user/group/world set.
         */
 
-       if (!ensure_canon_entry_valid(&list_head, fsp, powner, pgroup, psbuf, False))
+       if (!ensure_canon_entry_valid(&list_head, conn->params,
+                                     S_ISDIR(psbuf->st_mode), powner, pgroup,
+                                     psbuf, False))
                goto fail;
 
        /*
@@ -2223,7 +2334,7 @@ static canon_ace *canonicalise_acl( files_struct *fsp, SMB_ACL_T posix_acl, SMB_
                }
        }
 
-       arrange_posix_perms(fsp->fsp_name,&list_head );
+       arrange_posix_perms(fname,&list_head );
 
        print_canon_ace_list( "canonicalise_acl: ace entries after arrange", list_head );
 
@@ -2239,7 +2350,7 @@ static canon_ace *canonicalise_acl( files_struct *fsp, SMB_ACL_T posix_acl, SMB_
  Check if the current user group list contains a given group.
 ****************************************************************************/
 
-static BOOL current_user_in_group(gid_t gid)
+static bool current_user_in_group(gid_t gid)
 {
        int i;
 
@@ -2253,38 +2364,50 @@ static BOOL current_user_in_group(gid_t gid)
 }
 
 /****************************************************************************
- Should we override a deny ?  Check deprecated 'acl group control'
- and 'dos filemode'
+ Should we override a deny ? Check 'acl group control' and 'dos filemode'.
 ****************************************************************************/
 
-static BOOL acl_group_override(connection_struct *conn, gid_t prim_gid)
+static bool acl_group_override(connection_struct *conn,
+                               gid_t prim_gid,
+                               const char *fname)
 {
-       if ( (errno == EACCES || errno == EPERM) 
-               && (lp_acl_group_control(SNUM(conn) || lp_dos_filemode(SNUM(conn)))) 
-               && current_user_in_group(prim_gid) ) 
-       {
-               return True;
-       } 
+       SMB_STRUCT_STAT sbuf;
 
-       return False;
+       if ((errno != EPERM) && (errno != EACCES)) {
+               return false;
+       }
+
+       /* file primary group == user primary or supplementary group */
+       if (lp_acl_group_control(SNUM(conn)) &&
+                       current_user_in_group(prim_gid)) {
+               return true;
+       }
+
+       /* user has writeable permission */
+       if (lp_dos_filemode(SNUM(conn)) &&
+                       can_write_to_file(conn, fname, &sbuf)) {
+               return true;
+       }
+
+       return false;
 }
 
 /****************************************************************************
  Attempt to apply an ACL to a file or directory.
 ****************************************************************************/
 
-static BOOL set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, BOOL default_ace, gid_t prim_gid, BOOL *pacl_set_support)
+static bool set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, bool default_ace, gid_t prim_gid, bool *pacl_set_support)
 {
        connection_struct *conn = fsp->conn;
-       BOOL ret = False;
+       bool ret = False;
        SMB_ACL_T the_acl = SMB_VFS_SYS_ACL_INIT(conn, (int)count_canon_ace_list(the_ace) + 1);
        canon_ace *p_ace;
        int i;
        SMB_ACL_ENTRY_T mask_entry;
-       BOOL got_mask_entry = False;
+       bool got_mask_entry = False;
        SMB_ACL_PERMSET_T mask_permset;
        SMB_ACL_TYPE_T the_acl_type = (default_ace ? SMB_ACL_TYPE_DEFAULT : SMB_ACL_TYPE_ACCESS);
-       BOOL needs_mask = False;
+       bool needs_mask = False;
        mode_t mask_perms = 0;
 
 #if defined(POSIX_ACL_NEEDS_MASK)
@@ -2452,7 +2575,7 @@ static BOOL set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, BOOL defau
                                *pacl_set_support = False;
                        }
 
-                       if (acl_group_override(conn, prim_gid)) {
+                       if (acl_group_override(conn, prim_gid, fsp->fsp_name)) {
                                int sret;
 
                                DEBUG(5,("set_canon_ace_list: acl group control on and current user in file %s primary group.\n",
@@ -2474,7 +2597,7 @@ static BOOL set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, BOOL defau
                        }
                }
        } else {
-               if (SMB_VFS_SYS_ACL_SET_FD(fsp, fsp->fh->fd, the_acl) == -1) {
+               if (SMB_VFS_SYS_ACL_SET_FD(fsp, the_acl) == -1) {
                        /*
                         * Some systems allow all the above calls and only fail with no ACL support
                         * when attempting to apply the acl. HPUX with HFS is an example of this. JRA.
@@ -2483,14 +2606,14 @@ static BOOL set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, BOOL defau
                                *pacl_set_support = False;
                        }
 
-                       if (acl_group_override(conn, prim_gid)) {
+                       if (acl_group_override(conn, prim_gid, fsp->fsp_name)) {
                                int sret;
 
                                DEBUG(5,("set_canon_ace_list: acl group control on and current user in file %s primary group.\n",
                                        fsp->fsp_name ));
 
                                become_root();
-                               sret = SMB_VFS_SYS_ACL_SET_FD(fsp, fsp->fh->fd, the_acl);
+                               sret = SMB_VFS_SYS_ACL_SET_FD(fsp, the_acl);
                                unbecome_root();
                                if (sret == 0) {
                                        ret = True;
@@ -2555,7 +2678,7 @@ SMB_ACL_T free_empty_sys_acl(connection_struct *conn, SMB_ACL_T the_acl)
 
 #define MAP_PERM(p,mask,result) (((p) & (mask)) ? (result) : 0 )
 
-static BOOL convert_canon_ace_to_posix_perms( files_struct *fsp, canon_ace *file_ace_list, mode_t *posix_perms)
+static bool convert_canon_ace_to_posix_perms( files_struct *fsp, canon_ace *file_ace_list, mode_t *posix_perms)
 {
        int snum = SNUM(fsp->conn);
        size_t ace_count = count_canon_ace_list(file_ace_list);
@@ -2639,13 +2762,13 @@ static size_t merge_default_aces( SEC_ACE *nt_ace_list, size_t num_aces)
                for (j = i+1; j < num_aces; j++) {
                        uint32 i_flags_ni = (nt_ace_list[i].flags & ~SEC_ACE_FLAG_INHERITED_ACE);
                        uint32 j_flags_ni = (nt_ace_list[j].flags & ~SEC_ACE_FLAG_INHERITED_ACE);
-                       BOOL i_inh = (nt_ace_list[i].flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False;
-                       BOOL j_inh = (nt_ace_list[j].flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False;
+                       bool i_inh = (nt_ace_list[i].flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False;
+                       bool j_inh = (nt_ace_list[j].flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False;
 
                        /* We know the lower number ACE's are file entries. */
                        if ((nt_ace_list[i].type == nt_ace_list[j].type) &&
                                (nt_ace_list[i].size == nt_ace_list[j].size) &&
-                               (nt_ace_list[i].info.mask == nt_ace_list[j].info.mask) &&
+                               (nt_ace_list[i].access_mask == nt_ace_list[j].access_mask) &&
                                sid_equal(&nt_ace_list[i].trustee, &nt_ace_list[j].trustee) &&
                                (i_inh == j_inh) &&
                                (i_flags_ni == 0) &&
@@ -2658,7 +2781,7 @@ static size_t merge_default_aces( SEC_ACE *nt_ace_list, size_t num_aces)
                                 * the non-inherited ACE onto the inherited ACE.
                                 */
 
-                               if (nt_ace_list[i].info.mask == 0) {
+                               if (nt_ace_list[i].access_mask == 0) {
                                        nt_ace_list[j].flags = SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|
                                                                (i_inh ? SEC_ACE_FLAG_INHERITED_ACE : 0);
                                        if (num_aces - i - 1 > 0)
@@ -2690,6 +2813,7 @@ static size_t merge_default_aces( SEC_ACE *nt_ace_list, size_t num_aces)
 
        return num_aces;
 }
+
 /****************************************************************************
  Reply to query a security descriptor from an fsp. If it succeeds it allocates
  the space for the return elements and returns the size needed to return the
@@ -2697,11 +2821,15 @@ static size_t merge_default_aces( SEC_ACE *nt_ace_list, size_t num_aces)
  the UNIX style get ACL.
 ****************************************************************************/
 
-size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
+static NTSTATUS posix_get_nt_acl_common(struct connection_struct *conn,
+                                     const char *name,
+                                     const SMB_STRUCT_STAT *sbuf,
+                                     struct pai_val *pal,
+                                     SMB_ACL_T posix_acl,
+                                     SMB_ACL_T def_acl,
+                                     uint32_t security_info,
+                                     SEC_DESC **ppdesc)
 {
-       connection_struct *conn = fsp->conn;
-       SMB_STRUCT_STAT sbuf;
-       SEC_ACE *nt_ace_list = NULL;
        DOM_SID owner_sid;
        DOM_SID group_sid;
        size_t sd_size = 0;
@@ -2709,57 +2837,12 @@ size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
        size_t num_acls = 0;
        size_t num_def_acls = 0;
        size_t num_aces = 0;
-       SMB_ACL_T posix_acl = NULL;
-       SMB_ACL_T def_acl = NULL;
        canon_ace *file_ace = NULL;
        canon_ace *dir_ace = NULL;
+       SEC_ACE *nt_ace_list = NULL;
        size_t num_profile_acls = 0;
-       struct pai_val *pal = NULL;
        SEC_DESC *psd = NULL;
 
-       *ppdesc = NULL;
-
-       DEBUG(10,("get_nt_acl: called for file %s\n", fsp->fsp_name ));
-
-       if(fsp->is_directory || fsp->fh->fd == -1) {
-
-               /* Get the stat struct for the owner info. */
-               if(SMB_VFS_STAT(fsp->conn,fsp->fsp_name, &sbuf) != 0) {
-                       return 0;
-               }
-               /*
-                * Get the ACL from the path.
-                */
-
-               posix_acl = SMB_VFS_SYS_ACL_GET_FILE(conn, fsp->fsp_name, SMB_ACL_TYPE_ACCESS);
-
-               /*
-                * If it's a directory get the default POSIX ACL.
-                */
-
-               if(fsp->is_directory) {
-                       def_acl = SMB_VFS_SYS_ACL_GET_FILE(conn, fsp->fsp_name, SMB_ACL_TYPE_DEFAULT);
-                       def_acl = free_empty_sys_acl(conn, def_acl);
-               }
-
-       } else {
-
-               /* Get the stat struct for the owner info. */
-               if(SMB_VFS_FSTAT(fsp,fsp->fh->fd,&sbuf) != 0) {
-                       return 0;
-               }
-               /*
-                * Get the ACL from the fd.
-                */
-               posix_acl = SMB_VFS_SYS_ACL_GET_FD(fsp, fsp->fh->fd);
-       }
-
-       DEBUG(5,("get_nt_acl : file ACL %s, directory ACL %s\n",
-                       posix_acl ? "present" :  "absent",
-                       def_acl ? "present" :  "absent" ));
-
-       pal = load_inherited_info(fsp);
-
        /*
         * Get the owner, group and world SIDs.
         */
@@ -2770,7 +2853,7 @@ size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
                sid_copy(&group_sid, &global_sid_Builtin_Users);
                num_profile_acls = 2;
        } else {
-               create_file_sids(&sbuf, &owner_sid, &group_sid);
+               create_file_sids(sbuf, &owner_sid, &group_sid);
        }
 
        if ((security_info & DACL_SECURITY_INFORMATION) && !(security_info & PROTECTED_DACL_SECURITY_INFORMATION)) {
@@ -2785,19 +2868,23 @@ size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
                 */
 
                /* Create the canon_ace lists. */
-               file_ace = canonicalise_acl( fsp, posix_acl, &sbuf, &owner_sid, &group_sid, pal, SMB_ACL_TYPE_ACCESS );
+               file_ace = canonicalise_acl(conn, name, posix_acl, sbuf,
+                                           &owner_sid, &group_sid, pal,
+                                           SMB_ACL_TYPE_ACCESS);
 
                /* We must have *some* ACLS. */
        
                if (count_canon_ace_list(file_ace) == 0) {
-                       DEBUG(0,("get_nt_acl : No ACLs on file (%s) !\n", fsp->fsp_name ));
+                       DEBUG(0,("get_nt_acl : No ACLs on file (%s) !\n", name));
                        goto done;
                }
 
-               if (fsp->is_directory && def_acl) {
-                       dir_ace = canonicalise_acl(fsp, def_acl, &sbuf,
-                                       &global_sid_Creator_Owner,
-                                       &global_sid_Creator_Group, pal, SMB_ACL_TYPE_DEFAULT );
+               if (S_ISDIR(sbuf->st_mode) && def_acl) {
+                       dir_ace = canonicalise_acl(conn, name, def_acl,
+                                                  sbuf,
+                                                  &global_sid_Creator_Owner,
+                                                  &global_sid_Creator_Group,
+                                                  pal, SMB_ACL_TYPE_DEFAULT);
                }
 
                /*
@@ -2806,8 +2893,7 @@ size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
 
                {
                        canon_ace *ace;
-                       int nt_acl_type;
-                       int i;
+                       enum security_ace_type nt_acl_type;
 
                        if (nt4_compatible_acls() && dir_ace) {
                                /*
@@ -2868,47 +2954,53 @@ size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
                        }
 
                        memset(nt_ace_list, '\0', (num_acls + num_def_acls) * sizeof(SEC_ACE) );
-                                                                                                       
+
                        /*
                         * Create the NT ACE list from the canonical ace lists.
                         */
-       
-                       ace = file_ace;
 
-                       for (i = 0; i < num_acls; i++, ace = ace->next) {
-                               SEC_ACCESS acc;
-
-                               acc = map_canon_ace_perms(SNUM(conn), &nt_acl_type, &owner_sid, ace, fsp->is_directory);
-                               init_sec_ace(&nt_ace_list[num_aces++], &ace->trustee, nt_acl_type, acc, ace->inherited ? SEC_ACE_FLAG_INHERITED_ACE : 0);
+                       for (ace = file_ace; ace != NULL; ace = ace->next) {
+                               uint32_t acc = map_canon_ace_perms(SNUM(conn),
+                                               &nt_acl_type,
+                                               ace->perms,
+                                               S_ISDIR(sbuf->st_mode));
+                               init_sec_ace(&nt_ace_list[num_aces++],
+                                       &ace->trustee,
+                                       nt_acl_type,
+                                       acc,
+                                       ace->inherited ?
+                                               SEC_ACE_FLAG_INHERITED_ACE : 0);
                        }
 
-                       /* The User must have access to a profile share - even if we can't map the SID. */
+                       /* The User must have access to a profile share - even
+                        * if we can't map the SID. */
                        if (lp_profile_acls(SNUM(conn))) {
-                               SEC_ACCESS acc;
-
-                               init_sec_access(&acc,FILE_GENERIC_ALL);
-                               init_sec_ace(&nt_ace_list[num_aces++], &global_sid_Builtin_Users, SEC_ACE_TYPE_ACCESS_ALLOWED,
-                                               acc, 0);
+                               init_sec_ace(&nt_ace_list[num_aces++],
+                                               &global_sid_Builtin_Users,
+                                               SEC_ACE_TYPE_ACCESS_ALLOWED,
+                                               FILE_GENERIC_ALL, 0);
                        }
 
-                       ace = dir_ace;
-
-                       for (i = 0; i < num_def_acls; i++, ace = ace->next) {
-                               SEC_ACCESS acc;
-       
-                               acc = map_canon_ace_perms(SNUM(conn), &nt_acl_type, &owner_sid, ace, fsp->is_directory);
-                               init_sec_ace(&nt_ace_list[num_aces++], &ace->trustee, nt_acl_type, acc,
-                                               SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|
-                                               SEC_ACE_FLAG_INHERIT_ONLY|
-                                               (ace->inherited ? SEC_ACE_FLAG_INHERITED_ACE : 0));
+                       for (ace = dir_ace; ace != NULL; ace = ace->next) {
+                               uint32_t acc = map_canon_ace_perms(SNUM(conn),
+                                               &nt_acl_type,
+                                               ace->perms,
+                                               S_ISDIR(sbuf->st_mode));
+                               init_sec_ace(&nt_ace_list[num_aces++],
+                                       &ace->trustee,
+                                       nt_acl_type,
+                                       acc,
+                                       SEC_ACE_FLAG_OBJECT_INHERIT|
+                                       SEC_ACE_FLAG_CONTAINER_INHERIT|
+                                       SEC_ACE_FLAG_INHERIT_ONLY|
+                                       (ace->inherited ?
+                                          SEC_ACE_FLAG_INHERITED_ACE : 0));
                        }
 
-                       /* The User must have access to a profile share - even if we can't map the SID. */
+                       /* The User must have access to a profile share - even
+                        * if we can't map the SID. */
                        if (lp_profile_acls(SNUM(conn))) {
-                               SEC_ACCESS acc;
-                       
-                               init_sec_access(&acc,FILE_GENERIC_ALL);
-                               init_sec_ace(&nt_ace_list[num_aces++], &global_sid_Builtin_Users, SEC_ACE_TYPE_ACCESS_ALLOWED, acc,
+                               init_sec_ace(&nt_ace_list[num_aces++], &global_sid_Builtin_Users, SEC_ACE_TYPE_ACCESS_ALLOWED, FILE_GENERIC_ALL,
                                                SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|
                                                SEC_ACE_FLAG_INHERIT_ONLY|0);
                        }
@@ -2924,14 +3016,14 @@ size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
                }
 
                if (num_aces) {
-                       if((psa = make_sec_acl( main_loop_talloc_get(), NT4_ACL_REVISION, num_aces, nt_ace_list)) == NULL) {
+                       if((psa = make_sec_acl( talloc_tos(), NT4_ACL_REVISION, num_aces, nt_ace_list)) == NULL) {
                                DEBUG(0,("get_nt_acl: Unable to malloc space for acl.\n"));
                                goto done;
                        }
                }
        } /* security_info & DACL_SECURITY_INFORMATION */
 
-       psd = make_standard_sec_desc( main_loop_talloc_get(),
+       psd = make_standard_sec_desc( talloc_tos(),
                        (security_info & OWNER_SECURITY_INFORMATION) ? &owner_sid : NULL,
                        (security_info & GROUP_SECURITY_INFORMATION) ? &group_sid : NULL,
                        psa,
@@ -2958,7 +3050,7 @@ size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
        }
 
        if (psd->dacl) {
-               dacl_sort_into_canonical_order(psd->dacl->ace, (unsigned int)psd->dacl->num_aces);
+               dacl_sort_into_canonical_order(psd->dacl->aces, (unsigned int)psd->dacl->num_aces);
        }
 
        *ppdesc = psd;
@@ -2976,7 +3068,70 @@ size_t get_nt_acl(files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc)
        free_inherited_info(pal);
        SAFE_FREE(nt_ace_list);
 
-       return sd_size;
+       return NT_STATUS_OK;
+}
+
+NTSTATUS posix_fget_nt_acl(struct files_struct *fsp, uint32_t security_info,
+                          SEC_DESC **ppdesc)
+{
+       SMB_STRUCT_STAT sbuf;
+       SMB_ACL_T posix_acl = NULL;
+       struct pai_val *pal;
+
+       *ppdesc = NULL;
+
+       DEBUG(10,("posix_fget_nt_acl: called for file %s\n", fsp->fsp_name ));
+
+       /* can it happen that fsp_name == NULL ? */
+       if (fsp->is_directory ||  fsp->fh->fd == -1) {
+               return posix_get_nt_acl(fsp->conn, fsp->fsp_name,
+                                       security_info, ppdesc);
+       }
+
+       /* Get the stat struct for the owner info. */
+       if(SMB_VFS_FSTAT(fsp, &sbuf) != 0) {
+               return map_nt_error_from_unix(errno);
+       }
+
+       /* Get the ACL from the fd. */
+       posix_acl = SMB_VFS_SYS_ACL_GET_FD(fsp);
+
+       pal = fload_inherited_info(fsp);
+
+       return posix_get_nt_acl_common(fsp->conn, fsp->fsp_name, &sbuf, pal,
+                                      posix_acl, NULL, security_info, ppdesc);
+}
+
+NTSTATUS posix_get_nt_acl(struct connection_struct *conn, const char *name,
+                         uint32_t security_info, SEC_DESC **ppdesc)
+{
+       SMB_STRUCT_STAT sbuf;
+       SMB_ACL_T posix_acl = NULL;
+       SMB_ACL_T def_acl = NULL;
+       struct pai_val *pal;
+
+       *ppdesc = NULL;
+
+       DEBUG(10,("posix_get_nt_acl: called for file %s\n", name ));
+
+       /* Get the stat struct for the owner info. */
+       if(SMB_VFS_STAT(conn, name, &sbuf) != 0) {
+               return map_nt_error_from_unix(errno);
+       }
+
+       /* Get the ACL from the path. */
+       posix_acl = SMB_VFS_SYS_ACL_GET_FILE(conn, name, SMB_ACL_TYPE_ACCESS);
+
+       /* If it's a directory get the default POSIX ACL. */
+       if(S_ISDIR(sbuf.st_mode)) {
+               def_acl = SMB_VFS_SYS_ACL_GET_FILE(conn, name, SMB_ACL_TYPE_DEFAULT);
+               def_acl = free_empty_sys_acl(conn, def_acl);
+       }
+
+       pal = load_inherited_info(conn, name);
+
+       return posix_get_nt_acl_common(conn, name, &sbuf, pal, posix_acl,
+                                      def_acl, security_info, ppdesc);
 }
 
 /****************************************************************************
@@ -3008,9 +3163,9 @@ int try_chown(connection_struct *conn, const char *fname, uid_t uid, gid_t gid)
        /* Case (2) / (3) */
        if (lp_enable_privileges()) {
 
-               BOOL has_take_ownership_priv = user_has_privileges(current_user.nt_user_token,
+               bool has_take_ownership_priv = user_has_privileges(current_user.nt_user_token,
                                                              &se_take_ownership);
-               BOOL has_restore_priv = user_has_privileges(current_user.nt_user_token,
+               bool has_restore_priv = user_has_privileges(current_user.nt_user_token,
                                                       &se_restore);
 
                /* Case (2) */
@@ -3028,6 +3183,7 @@ int try_chown(connection_struct *conn, const char *fname, uid_t uid, gid_t gid)
 
        /* Case (4). */
        if (!lp_dos_filemode(SNUM(conn))) {
+               errno = EPERM;
                return -1;
        }
 
@@ -3035,7 +3191,7 @@ int try_chown(connection_struct *conn, const char *fname, uid_t uid, gid_t gid)
                return -1;
        }
 
-       if (!NT_STATUS_IS_OK(open_file_fchmod(conn,fname,&st,&fsp))) {
+       if (!NT_STATUS_IS_OK(open_file_fchmod(NULL, conn, fname, &st, &fsp))) {
                return -1;
        }
 
@@ -3047,41 +3203,237 @@ int try_chown(connection_struct *conn, const char *fname, uid_t uid, gid_t gid)
 
        become_root();
        /* Keep the current file gid the same. */
-       ret = SMB_VFS_FCHOWN(fsp, fsp->fh->fd, uid, (gid_t)-1);
+       ret = SMB_VFS_FCHOWN(fsp, uid, (gid_t)-1);
        unbecome_root();
 
-       close_file_fchmod(fsp);
+       close_file_fchmod(NULL, fsp);
 
        return ret;
 }
 
+#if 0
+/* Disable this - prevents ACL inheritance from the ACL editor. JRA. */
+
+/****************************************************************************
+ Take care of parent ACL inheritance.
+****************************************************************************/
+
+NTSTATUS append_parent_acl(files_struct *fsp,
+                               const SEC_DESC *pcsd,
+                               SEC_DESC **pp_new_sd)
+{
+       SEC_DESC *parent_sd = NULL;
+       files_struct *parent_fsp = NULL;
+       TALLOC_CTX *mem_ctx = talloc_tos();
+       char *parent_name = NULL;
+       SEC_ACE *new_ace = NULL;
+       unsigned int num_aces = pcsd->dacl->num_aces;
+       SMB_STRUCT_STAT sbuf;
+       NTSTATUS status;
+       int info;
+       unsigned int i, j;
+       SEC_DESC *psd = dup_sec_desc(talloc_tos(), pcsd);
+       bool is_dacl_protected = (pcsd->type & SE_DESC_DACL_PROTECTED);
+
+       ZERO_STRUCT(sbuf);
+
+       if (psd == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       if (!parent_dirname(mem_ctx, fsp->fsp_name, &parent_name, NULL)) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       status = SMB_VFS_CREATE_FILE(
+               fsp->conn,                              /* conn */
+               NULL,                                   /* req */
+               0,                                      /* root_dir_fid */
+               parent_name,                            /* fname */
+               0,                                      /* create_file_flags */
+               FILE_READ_ATTRIBUTES,                   /* access_mask */
+               FILE_SHARE_NONE,                        /* share_access */
+               FILE_OPEN,                              /* create_disposition*/
+               FILE_DIRECTORY_FILE,                    /* create_options */
+               0,                                      /* file_attributes */
+               INTERNAL_OPEN_ONLY,                     /* oplock_request */
+               0,                                      /* allocation_size */
+               NULL,                                   /* sd */
+               NULL,                                   /* ea_list */
+               &parent_fsp,                            /* result */
+               &info,                                  /* pinfo */
+               &sbuf);                                 /* psbuf */
+
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+
+       status = SMB_VFS_GET_NT_ACL(parent_fsp->conn, parent_fsp->fsp_name,
+                                   DACL_SECURITY_INFORMATION, &parent_sd );
+
+       close_file(NULL, parent_fsp, NORMAL_CLOSE);
+
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+
+       /*
+        * Make room for potentially all the ACLs from
+        * the parent. We used to add the ugw triple here,
+        * as we knew we were dealing with POSIX ACLs.
+        * We no longer need to do so as we can guarentee
+        * that a default ACL from the parent directory will
+        * be well formed for POSIX ACLs if it came from a
+        * POSIX ACL source, and if we're not writing to a
+        * POSIX ACL sink then we don't care if it's not well
+        * formed. JRA.
+        */
+
+       num_aces += parent_sd->dacl->num_aces;
+
+       if((new_ace = TALLOC_ZERO_ARRAY(mem_ctx, SEC_ACE,
+                                       num_aces)) == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       /* Start by copying in all the given ACE entries. */
+       for (i = 0; i < psd->dacl->num_aces; i++) {
+               sec_ace_copy(&new_ace[i], &psd->dacl->aces[i]);
+       }
+
+       /*
+        * Note that we're ignoring "inherit permissions" here
+        * as that really only applies to newly created files. JRA.
+        */
+
+       /* Finally append any inherited ACEs. */
+       for (j = 0; j < parent_sd->dacl->num_aces; j++) {
+               SEC_ACE *se = &parent_sd->dacl->aces[j];
+
+               if (fsp->is_directory) {
+                       if (!(se->flags & SEC_ACE_FLAG_CONTAINER_INHERIT)) {
+                               /* Doesn't apply to a directory - ignore. */
+                               DEBUG(10,("append_parent_acl: directory %s "
+                                       "ignoring non container "
+                                       "inherit flags %u on ACE with sid %s "
+                                       "from parent %s\n",
+                                       fsp->fsp_name,
+                                       (unsigned int)se->flags,
+                                       sid_string_dbg(&se->trustee),
+                                       parent_name));
+                               continue;
+                       }
+               } else {
+                       if (!(se->flags & SEC_ACE_FLAG_OBJECT_INHERIT)) {
+                               /* Doesn't apply to a file - ignore. */
+                               DEBUG(10,("append_parent_acl: file %s "
+                                       "ignoring non object "
+                                       "inherit flags %u on ACE with sid %s "
+                                       "from parent %s\n",
+                                       fsp->fsp_name,
+                                       (unsigned int)se->flags,
+                                       sid_string_dbg(&se->trustee),
+                                       parent_name));
+                               continue;
+                       }
+               }
+
+               if (is_dacl_protected) {
+                       /* If the DACL is protected it means we must
+                        * not overwrite an existing ACE entry with the
+                        * same SID. This is order N^2. Ouch :-(. JRA. */
+                       unsigned int k;
+                       for (k = 0; k < psd->dacl->num_aces; k++) {
+                               if (sid_equal(&psd->dacl->aces[k].trustee,
+                                               &se->trustee)) {
+                                       break;
+                               }
+                       }
+                       if (k < psd->dacl->num_aces) {
+                               /* SID matched. Ignore. */
+                               DEBUG(10,("append_parent_acl: path %s "
+                                       "ignoring ACE with protected sid %s "
+                                       "from parent %s\n",
+                                       fsp->fsp_name,
+                                       sid_string_dbg(&se->trustee),
+                                       parent_name));
+                               continue;
+                       }
+               }
+
+               sec_ace_copy(&new_ace[i], se);
+               if (se->flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
+                       new_ace[i].flags &= ~(SEC_ACE_FLAG_VALID_INHERIT);
+               }
+               new_ace[i].flags |= SEC_ACE_FLAG_INHERITED_ACE;
+
+               if (fsp->is_directory) {
+                       /*
+                        * Strip off any inherit only. It's applied.
+                        */
+                       new_ace[i].flags &= ~(SEC_ACE_FLAG_INHERIT_ONLY);
+                       if (se->flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
+                               /* No further inheritance. */
+                               new_ace[i].flags &=
+                                       ~(SEC_ACE_FLAG_CONTAINER_INHERIT|
+                                       SEC_ACE_FLAG_OBJECT_INHERIT);
+                       }
+               } else {
+                       /*
+                        * Strip off any container or inherit
+                        * flags, they can't apply to objects.
+                        */
+                       new_ace[i].flags &= ~(SEC_ACE_FLAG_CONTAINER_INHERIT|
+                                               SEC_ACE_FLAG_INHERIT_ONLY|
+                                               SEC_ACE_FLAG_NO_PROPAGATE_INHERIT);
+               }
+               i++;
+
+               DEBUG(10,("append_parent_acl: path %s "
+                       "inheriting ACE with sid %s "
+                       "from parent %s\n",
+                       fsp->fsp_name,
+                       sid_string_dbg(&se->trustee),
+                       parent_name));
+       }
+
+       psd->dacl->aces = new_ace;
+       psd->dacl->num_aces = i;
+       psd->type &= ~(SE_DESC_DACL_AUTO_INHERITED|
+                         SE_DESC_DACL_AUTO_INHERIT_REQ);
+
+       *pp_new_sd = psd;
+       return status;
+}
+#endif
+
 /****************************************************************************
  Reply to set a security descriptor on an fsp. security_info_sent is the
  description of the following NT ACL.
  This should be the only external function needed for the UNIX style set ACL.
 ****************************************************************************/
 
-BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
+NTSTATUS set_nt_acl(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
 {
        connection_struct *conn = fsp->conn;
        uid_t user = (uid_t)-1;
        gid_t grp = (gid_t)-1;
-       SMB_STRUCT_STAT sbuf;  
+       SMB_STRUCT_STAT sbuf;
        DOM_SID file_owner_sid;
        DOM_SID file_grp_sid;
        canon_ace *file_ace_list = NULL;
        canon_ace *dir_ace_list = NULL;
-       BOOL acl_perms = False;
+       bool acl_perms = False;
        mode_t orig_mode = (mode_t)0;
+       NTSTATUS status;
        uid_t orig_uid;
        gid_t orig_gid;
-       BOOL need_chown = False;
 
        DEBUG(10,("set_nt_acl: called for file %s\n", fsp->fsp_name ));
 
        if (!CAN_WRITE(conn)) {
                DEBUG(10,("set acl rejected on read-only share\n"));
-               return False;
+               return NT_STATUS_MEDIA_WRITE_PROTECTED;
        }
 
        /*
@@ -3090,10 +3442,10 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
 
        if(fsp->is_directory || fsp->fh->fd == -1) {
                if(SMB_VFS_STAT(fsp->conn,fsp->fsp_name, &sbuf) != 0)
-                       return False;
+                       return map_nt_error_from_unix(errno);
        } else {
-               if(SMB_VFS_FSTAT(fsp,fsp->fh->fd,&sbuf) != 0)
-                       return False;
+               if(SMB_VFS_FSTAT(fsp, &sbuf) != 0)
+                       return map_nt_error_from_unix(errno);
        }
 
        /* Save the original elements we check against. */
@@ -3105,25 +3457,18 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
         * Unpack the user/group/world id's.
         */
 
-       if (!unpack_nt_owners( SNUM(conn), &user, &grp, security_info_sent, psd)) {
-               return False;
+       status = unpack_nt_owners( SNUM(conn), &user, &grp, security_info_sent, psd);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
        }
 
        /*
-        * Do we need to chown ?
+        * Do we need to chown ? If so this must be done first as the incoming
+        * CREATOR_OWNER acl will be relative to the *new* owner, not the old.
+        * Noticed by Simo.
         */
 
        if (((user != (uid_t)-1) && (orig_uid != user)) || (( grp != (gid_t)-1) && (orig_gid != grp))) {
-               need_chown = True;
-       }
-
-       /*
-        * Chown before setting ACL only if we don't change the user, or
-        * if we change to the current user, but not if we want to give away
-        * the file.
-        */
-
-       if (need_chown && (user == (uid_t)-1 || user == current_user.ut.uid)) {
 
                DEBUG(3,("set_nt_acl: chown %s. uid = %u, gid = %u.\n",
                                fsp->fsp_name, (unsigned int)user, (unsigned int)grp ));
@@ -3131,7 +3476,10 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                if(try_chown( fsp->conn, fsp->fsp_name, user, grp) == -1) {
                        DEBUG(3,("set_nt_acl: chown %s, %u, %u failed. Error = %s.\n",
                                fsp->fsp_name, (unsigned int)user, (unsigned int)grp, strerror(errno) ));
-                       return False;
+                       if (errno == EPERM) {
+                               return NT_STATUS_INVALID_OWNER;
+                       }
+                       return map_nt_error_from_unix(errno);
                }
 
                /*
@@ -3141,32 +3489,51 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
 
                if(fsp->is_directory) {
                        if(SMB_VFS_STAT(fsp->conn, fsp->fsp_name, &sbuf) != 0) {
-                               return False;
+                               return map_nt_error_from_unix(errno);
                        }
                } else {
 
                        int ret;
-    
+
                        if(fsp->fh->fd == -1)
                                ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name, &sbuf);
                        else
-                               ret = SMB_VFS_FSTAT(fsp,fsp->fh->fd,&sbuf);
-  
+                               ret = SMB_VFS_FSTAT(fsp, &sbuf);
+
                        if(ret != 0)
-                               return False;
+                               return map_nt_error_from_unix(errno);
                }
 
                /* Save the original elements we check against. */
                orig_mode = sbuf.st_mode;
                orig_uid = sbuf.st_uid;
                orig_gid = sbuf.st_gid;
-
-               /* We did it, don't try again */
-               need_chown = False;
        }
 
        create_file_sids(&sbuf, &file_owner_sid, &file_grp_sid);
 
+#if 0
+       /* Disable this - prevents ACL inheritance from the ACL editor. JRA. */
+
+       /* See here: http://www.codeproject.com/KB/winsdk/accessctrl2.aspx
+        * for details and also the log trace in bug #4308. JRA.
+        */
+
+       if ((security_info_sent & DACL_SECURITY_INFORMATION) &&
+               psd->dacl != NULL &&
+               (psd->type & (SE_DESC_DACL_AUTO_INHERITED|
+                             SE_DESC_DACL_AUTO_INHERIT_REQ))==
+                       (SE_DESC_DACL_AUTO_INHERITED|
+                        SE_DESC_DACL_AUTO_INHERIT_REQ) ) {
+               SEC_DESC *new_sd = NULL;
+               status = append_parent_acl(fsp, psd, &new_sd);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
+               }
+               psd = new_sd;
+       }
+#endif
+
        acl_perms = unpack_canon_ace( fsp, &sbuf, &file_owner_sid, &file_grp_sid,
                                        &file_ace_list, &dir_ace_list, security_info_sent, psd);
 
@@ -3177,7 +3544,7 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                        DEBUG(3,("set_nt_acl: cannot set permissions\n"));
                        free_canon_ace_list(file_ace_list);
                        free_canon_ace_list(dir_ace_list); 
-                       return False;
+                       return NT_STATUS_ACCESS_DENIED;
                }
 
                /*
@@ -3186,8 +3553,8 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
 
                if((security_info_sent & DACL_SECURITY_INFORMATION) && (psd->dacl != NULL)) {
 
-                       BOOL acl_set_support = False;
-                       BOOL ret = False;
+                       bool acl_set_support = False;
+                       bool ret = False;
 
                        /*
                         * Try using the POSIX ACL set first. Fall back to chmod if
@@ -3200,7 +3567,7 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                                        DEBUG(3,("set_nt_acl: failed to set file acl on file %s (%s).\n", fsp->fsp_name, strerror(errno) ));
                                        free_canon_ace_list(file_ace_list);
                                        free_canon_ace_list(dir_ace_list); 
-                                       return False;
+                                       return map_nt_error_from_unix(errno);
                                }
                        }
 
@@ -3210,7 +3577,7 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                                                DEBUG(3,("set_nt_acl: failed to set default acl on directory %s (%s).\n", fsp->fsp_name, strerror(errno) ));
                                                free_canon_ace_list(file_ace_list);
                                                free_canon_ace_list(dir_ace_list); 
-                                               return False;
+                                               return map_nt_error_from_unix(errno);
                                        }
                                } else {
 
@@ -3221,7 +3588,7 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                                        if (SMB_VFS_SYS_ACL_DELETE_DEF_FILE(conn, fsp->fsp_name) == -1) {
                                                int sret = -1;
 
-                                               if (acl_group_override(conn, sbuf.st_gid)) {
+                                               if (acl_group_override(conn, sbuf.st_gid, fsp->fsp_name)) {
                                                        DEBUG(5,("set_nt_acl: acl group control on and "
                                                                "current user in file %s primary group. Override delete_def_acl\n",
                                                                fsp->fsp_name ));
@@ -3235,7 +3602,7 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                                                        DEBUG(3,("set_nt_acl: sys_acl_delete_def_file failed (%s)\n", strerror(errno)));
                                                        free_canon_ace_list(file_ace_list);
                                                        free_canon_ace_list(dir_ace_list);
-                                                       return False;
+                                                       return map_nt_error_from_unix(errno);
                                                }
                                        }
                                }
@@ -3258,7 +3625,7 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                                        free_canon_ace_list(dir_ace_list);
                                        DEBUG(3,("set_nt_acl: failed to convert file acl to posix permissions for file %s.\n",
                                                fsp->fsp_name ));
-                                       return False;
+                                       return NT_STATUS_ACCESS_DENIED;
                                }
 
                                if (orig_mode != posix_perms) {
@@ -3268,7 +3635,7 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
 
                                        if(SMB_VFS_CHMOD(conn,fsp->fsp_name, posix_perms) == -1) {
                                                int sret = -1;
-                                               if (acl_group_override(conn, sbuf.st_gid)) {
+                                               if (acl_group_override(conn, sbuf.st_gid, fsp->fsp_name)) {
                                                        DEBUG(5,("set_nt_acl: acl group control on and "
                                                                "current user in file %s primary group. Override chmod\n",
                                                                fsp->fsp_name ));
@@ -3283,7 +3650,7 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                                                                fsp->fsp_name, (unsigned int)posix_perms, strerror(errno) ));
                                                        free_canon_ace_list(file_ace_list);
                                                        free_canon_ace_list(dir_ace_list);
-                                                       return False;
+                                                       return map_nt_error_from_unix(errno);
                                                }
                                        }
                                }
@@ -3291,23 +3658,10 @@ BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
                }
 
                free_canon_ace_list(file_ace_list);
-               free_canon_ace_list(dir_ace_list); 
-       }
-
-       /* Any chown pending? */
-       if (need_chown) {
-
-               DEBUG(3,("set_nt_acl: chown %s. uid = %u, gid = %u.\n",
-                       fsp->fsp_name, (unsigned int)user, (unsigned int)grp ));
-
-               if(try_chown( fsp->conn, fsp->fsp_name, user, grp) == -1) {
-                       DEBUG(3,("set_nt_acl: chown %s, %u, %u failed. Error = %s.\n",
-                               fsp->fsp_name, (unsigned int)user, (unsigned int)grp, strerror(errno) ));
-                       return False;
-               }
+               free_canon_ace_list(dir_ace_list);
        }
 
-       return True;
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
@@ -3331,9 +3685,7 @@ int get_acl_group_bits( connection_struct *conn, const char *fname, mode_t *mode
                SMB_ACL_TAG_T tagtype;
                SMB_ACL_PERMSET_T permset;
 
-               /* get_next... */
-               if (entry_id == SMB_ACL_FIRST_ENTRY)
-                       entry_id = SMB_ACL_NEXT_ENTRY;
+               entry_id = SMB_ACL_NEXT_ENTRY;
 
                if (SMB_VFS_SYS_ACL_GET_TAG_TYPE(conn, entry, &tagtype) ==-1)
                        break;
@@ -3371,9 +3723,7 @@ static int chmod_acl_internals( connection_struct *conn, SMB_ACL_T posix_acl, mo
                SMB_ACL_PERMSET_T permset;
                mode_t perms;
 
-               /* get_next... */
-               if (entry_id == SMB_ACL_FIRST_ENTRY)
-                       entry_id = SMB_ACL_NEXT_ENTRY;
+               entry_id = SMB_ACL_NEXT_ENTRY;
 
                if (SMB_VFS_SYS_ACL_GET_TAG_TYPE(conn, entry, &tagtype) == -1)
                        return -1;
@@ -3430,7 +3780,7 @@ static int chmod_acl_internals( connection_struct *conn, SMB_ACL_T posix_acl, mo
  resulting ACL on TO.  Note that name is in UNIX character set.
 ****************************************************************************/
 
-static int copy_access_acl(connection_struct *conn, const char *from, const char *to, mode_t mode)
+static int copy_access_posix_acl(connection_struct *conn, const char *from, const char *to, mode_t mode)
 {
        SMB_ACL_T posix_acl = NULL;
        int ret = -1;
@@ -3457,23 +3807,41 @@ static int copy_access_acl(connection_struct *conn, const char *from, const char
 
 int chmod_acl(connection_struct *conn, const char *name, mode_t mode)
 {
-       return copy_access_acl(conn, name, name, mode);
+       return copy_access_posix_acl(conn, name, name, mode);
 }
 
 /****************************************************************************
- If "inherit permissions" is set and the parent directory has no default
- ACL but it does have an Access ACL, inherit this Access ACL to file name.
+ Check for an existing default POSIX ACL on a directory.
 ****************************************************************************/
 
-int inherit_access_acl(connection_struct *conn, const char *name, mode_t mode)
+static bool directory_has_default_posix_acl(connection_struct *conn, const char *fname)
 {
-       pstring dirname;
-       pstrcpy(dirname, parent_dirname(name));
+       SMB_ACL_T def_acl = SMB_VFS_SYS_ACL_GET_FILE( conn, fname, SMB_ACL_TYPE_DEFAULT);
+       bool has_acl = False;
+       SMB_ACL_ENTRY_T entry;
 
-       if (!lp_inherit_perms(SNUM(conn)) || directory_has_default_acl(conn, dirname))
+       if (def_acl != NULL && (SMB_VFS_SYS_ACL_GET_ENTRY(conn, def_acl, SMB_ACL_FIRST_ENTRY, &entry) == 1)) {
+               has_acl = True;
+       }
+
+       if (def_acl) {
+               SMB_VFS_SYS_ACL_FREE_ACL(conn, def_acl);
+       }
+        return has_acl;
+}
+
+/****************************************************************************
+ If the parent directory has no default ACL but it does have an Access ACL,
+ inherit this Access ACL to file name.
+****************************************************************************/
+
+int inherit_access_posix_acl(connection_struct *conn, const char *inherit_from_dir,
+                      const char *name, mode_t mode)
+{
+       if (directory_has_default_posix_acl(conn, inherit_from_dir))
                return 0;
 
-       return copy_access_acl(conn, dirname, name, mode);
+       return copy_access_posix_acl(conn, inherit_from_dir, name, mode);
 }
 
 /****************************************************************************
@@ -3481,19 +3849,19 @@ int inherit_access_acl(connection_struct *conn, const char *name, mode_t mode)
  and set the mask to rwx. Needed to preserve complex ACLs set by NT.
 ****************************************************************************/
 
-int fchmod_acl(files_struct *fsp, int fd, mode_t mode)
+int fchmod_acl(files_struct *fsp, mode_t mode)
 {
        connection_struct *conn = fsp->conn;
        SMB_ACL_T posix_acl = NULL;
        int ret = -1;
 
-       if ((posix_acl = SMB_VFS_SYS_ACL_GET_FD(fsp, fd)) == NULL)
+       if ((posix_acl = SMB_VFS_SYS_ACL_GET_FD(fsp)) == NULL)
                return -1;
 
        if ((ret = chmod_acl_internals(conn, posix_acl, mode)) == -1)
                goto done;
 
-       ret = SMB_VFS_SYS_ACL_SET_FD(fsp, fd, posix_acl);
+       ret = SMB_VFS_SYS_ACL_SET_FD(fsp, posix_acl);
 
   done:
 
@@ -3501,31 +3869,11 @@ int fchmod_acl(files_struct *fsp, int fd, mode_t mode)
        return ret;
 }
 
-/****************************************************************************
- Check for an existing default POSIX ACL on a directory.
-****************************************************************************/
-
-BOOL directory_has_default_acl(connection_struct *conn, const char *fname)
-{
-       SMB_ACL_T def_acl = SMB_VFS_SYS_ACL_GET_FILE( conn, fname, SMB_ACL_TYPE_DEFAULT);
-       BOOL has_acl = False;
-       SMB_ACL_ENTRY_T entry;
-
-       if (def_acl != NULL && (SMB_VFS_SYS_ACL_GET_ENTRY(conn, def_acl, SMB_ACL_FIRST_ENTRY, &entry) == 1)) {
-               has_acl = True;
-       }
-
-       if (def_acl) {
-               SMB_VFS_SYS_ACL_FREE_ACL(conn, def_acl);
-       }
-        return has_acl;
-}
-
 /****************************************************************************
  Map from wire type to permset.
 ****************************************************************************/
 
-static BOOL unix_ex_wire_to_permset(connection_struct *conn, unsigned char wire_perm, SMB_ACL_PERMSET_T *p_permset)
+static bool unix_ex_wire_to_permset(connection_struct *conn, unsigned char wire_perm, SMB_ACL_PERMSET_T *p_permset)
 {
        if (wire_perm & ~(SMB_POSIX_ACL_READ|SMB_POSIX_ACL_WRITE|SMB_POSIX_ACL_EXECUTE)) {
                return False;
@@ -3557,7 +3905,7 @@ static BOOL unix_ex_wire_to_permset(connection_struct *conn, unsigned char wire_
  Map from wire type to tagtype.
 ****************************************************************************/
 
-static BOOL unix_ex_wire_to_tagtype(unsigned char wire_tt, SMB_ACL_TAG_T *p_tt)
+static bool unix_ex_wire_to_tagtype(unsigned char wire_tt, SMB_ACL_TAG_T *p_tt)
 {
        switch (wire_tt) {
                case SMB_POSIX_ACL_USER_OBJ:
@@ -3680,7 +4028,7 @@ static SMB_ACL_T create_posix_acl_from_wire(connection_struct *conn, uint16 num_
  on the directory.
 ****************************************************************************/
 
-BOOL set_unix_posix_default_acl(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf,
+bool set_unix_posix_default_acl(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf,
                                uint16 num_def_acls, const char *pdata)
 {
        SMB_ACL_T def_acl = NULL;
@@ -3725,12 +4073,12 @@ BOOL set_unix_posix_default_acl(connection_struct *conn, const char *fname, SMB_
  FIXME ! How does the share mask/mode fit into this.... ?
 ****************************************************************************/
 
-static BOOL remove_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname)
+static bool remove_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname)
 {
        SMB_ACL_T file_acl = NULL;
        int entry_id = SMB_ACL_FIRST_ENTRY;
        SMB_ACL_ENTRY_T entry;
-       BOOL ret = False;
+       bool ret = False;
        /* Create a new ACL with only 3 entries, u/g/w. */
        SMB_ACL_T new_file_acl = SMB_VFS_SYS_ACL_INIT(conn, 3);
        SMB_ACL_ENTRY_T user_ent = NULL;
@@ -3778,7 +4126,7 @@ static BOOL remove_posix_acl(connection_struct *conn, files_struct *fsp, const c
 
        /* Get the current file ACL. */
        if (fsp && fsp->fh->fd != -1) {
-               file_acl = SMB_VFS_SYS_ACL_GET_FD(fsp, fsp->fh->fd);
+               file_acl = SMB_VFS_SYS_ACL_GET_FD(fsp);
        } else {
                file_acl = SMB_VFS_SYS_ACL_GET_FILE( conn, fname, SMB_ACL_TYPE_ACCESS);
        }
@@ -3795,9 +4143,7 @@ static BOOL remove_posix_acl(connection_struct *conn, files_struct *fsp, const c
                SMB_ACL_TAG_T tagtype;
                SMB_ACL_PERMSET_T permset;
 
-               /* get_next... */
-               if (entry_id == SMB_ACL_FIRST_ENTRY)
-                       entry_id = SMB_ACL_NEXT_ENTRY;
+               entry_id = SMB_ACL_NEXT_ENTRY;
 
                if (SMB_VFS_SYS_ACL_GET_TAG_TYPE(conn, entry, &tagtype) == -1) {
                        DEBUG(5,("remove_posix_acl: failed to get tagtype from ACL on file %s (%s).\n",
@@ -3831,7 +4177,7 @@ static BOOL remove_posix_acl(connection_struct *conn, files_struct *fsp, const c
 
        /* Set the new empty file ACL. */
        if (fsp && fsp->fh->fd != -1) {
-               if (SMB_VFS_SYS_ACL_SET_FD(fsp, fsp->fh->fd, new_file_acl) == -1) {
+               if (SMB_VFS_SYS_ACL_SET_FD(fsp, new_file_acl) == -1) {
                        DEBUG(5,("remove_posix_acl: acl_set_file failed on %s (%s)\n",
                                fname, strerror(errno) ));
                        goto done;
@@ -3863,7 +4209,7 @@ static BOOL remove_posix_acl(connection_struct *conn, files_struct *fsp, const c
  except SMB_ACL_USER_OBJ, SMB_ACL_GROUP_OBJ, SMB_ACL_OTHER.
 ****************************************************************************/
 
-BOOL set_unix_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname, uint16 num_acls, const char *pdata)
+bool set_unix_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname, uint16 num_acls, const char *pdata)
 {
        SMB_ACL_T file_acl = NULL;
 
@@ -3878,7 +4224,7 @@ BOOL set_unix_posix_acl(connection_struct *conn, files_struct *fsp, const char *
 
        if (fsp && fsp->fh->fd != -1) {
                /* The preferred way - use an open fd. */
-               if (SMB_VFS_SYS_ACL_SET_FD(fsp, fsp->fh->fd, file_acl) == -1) {
+               if (SMB_VFS_SYS_ACL_SET_FD(fsp, file_acl) == -1) {
                        DEBUG(5,("set_unix_posix_acl: acl_set_file failed on %s (%s)\n",
                                fname, strerror(errno) ));
                        SMB_VFS_SYS_ACL_FREE_ACL(conn, file_acl);
@@ -3898,499 +4244,63 @@ BOOL set_unix_posix_acl(connection_struct *conn, files_struct *fsp, const char *
        return True;
 }
 
-/****************************************************************************
- Check for POSIX group ACLs. If none use stat entry.
- Return -1 if no match, 0 if match and denied, 1 if match and allowed.
-****************************************************************************/
-
-static int check_posix_acl_group_access(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf, uint32 access_mask)
-{
-       SMB_ACL_T posix_acl = NULL;
-       int entry_id = SMB_ACL_FIRST_ENTRY;
-       SMB_ACL_ENTRY_T entry;
-       int i;
-       BOOL seen_mask = False;
-       BOOL seen_owning_group = False;
-       int ret = -1;
-       gid_t cu_gid;
-
-       DEBUG(10,("check_posix_acl_group_access: requesting 0x%x on file %s\n",
-               (unsigned int)access_mask, fname ));
-
-       if ((posix_acl = SMB_VFS_SYS_ACL_GET_FILE(conn, fname, SMB_ACL_TYPE_ACCESS)) == NULL) {
-               goto check_stat;
-       }
-
-       /* First ensure the group mask allows group access. */
-       /* Also check any user entries (these take preference over group). */
-
-       while ( SMB_VFS_SYS_ACL_GET_ENTRY(conn, posix_acl, entry_id, &entry) == 1) {
-               SMB_ACL_TAG_T tagtype;
-               SMB_ACL_PERMSET_T permset;
-               int have_write = -1;
-               int have_read = -1;
-
-               /* get_next... */
-               if (entry_id == SMB_ACL_FIRST_ENTRY)
-                       entry_id = SMB_ACL_NEXT_ENTRY;
-
-               if (SMB_VFS_SYS_ACL_GET_TAG_TYPE(conn, entry, &tagtype) == -1) {
-                       goto check_stat;
-               }
-
-               if (SMB_VFS_SYS_ACL_GET_PERMSET(conn, entry, &permset) == -1) {
-                       goto check_stat;
-               }
-
-               have_read = SMB_VFS_SYS_ACL_GET_PERM(conn, permset, SMB_ACL_READ);
-               if (have_read == -1) {
-                       goto check_stat;
-               }
-
-               have_write = SMB_VFS_SYS_ACL_GET_PERM(conn, permset, SMB_ACL_WRITE);
-               if (have_write == -1) {
-                       goto check_stat;
-               }
-
-               /*
-                * Solaris returns 2 for this if write is available.
-                * canonicalize to 0 or 1.
-                */     
-               have_write = (have_write ? 1 : 0);
-               have_read = (have_read ? 1 : 0);
-
-               switch(tagtype) {
-                       case SMB_ACL_MASK:
-                               seen_mask = True;
-                               switch (access_mask) {
-                                       case FILE_READ_DATA:
-                                               if (!have_read) {
-                                                       ret = -1;
-                                                       DEBUG(10,("check_posix_acl_group_access: file %s "
-                                                               "refusing read due to mask.\n", fname));
-                                                       goto done;
-                                               }
-                                               break;
-                                       case FILE_WRITE_DATA:
-                                               if (!have_write) {
-                                                       ret = -1;
-                                                       DEBUG(10,("check_posix_acl_group_access: file %s "
-                                                               "refusing write due to mask.\n", fname));
-                                                       goto done;
-                                               }
-                                               break;
-                                       default: /* FILE_READ_DATA|FILE_WRITE_DATA */
-                                               if (!have_write || !have_read) {
-                                                       ret = -1;
-                                                       DEBUG(10,("check_posix_acl_group_access: file %s "
-                                                               "refusing read/write due to mask.\n", fname));
-                                                       goto done;
-                                               }
-                                               break;
-                               }
-                               break;
-                       case SMB_ACL_USER:
-                       {
-                               /* Check against current_user.ut.uid. */
-                               uid_t *puid = (uid_t *)SMB_VFS_SYS_ACL_GET_QUALIFIER(conn, entry);
-                               if (puid == NULL) {
-                                       goto check_stat;
-                               }
-                               if (current_user.ut.uid == *puid) {
-                                       /* We have a uid match but we must ensure we have seen the acl mask. */
-                                       switch (access_mask) {
-                                               case FILE_READ_DATA:
-                                                       ret = have_read;
-                                                       break;
-                                               case FILE_WRITE_DATA:
-                                                       ret = have_write;
-                                                       break;
-                                               default: /* FILE_READ_DATA|FILE_WRITE_DATA */
-                                                       ret = (have_write & have_read);
-                                                       break;
-                                       }
-                                       DEBUG(10,("check_posix_acl_group_access: file %s "
-                                               "match on user %u -> %s.\n",
-                                               fname, (unsigned int)*puid,
-                                               ret ? "can access" : "cannot access"));
-                                       if (seen_mask) {
-                                               goto done;
-                                       }
-                               }
-                               break;
-                       }
-                       default:
-                               continue;
-               }
-       }
-
-       /* If ret is anything other than -1 we matched on a user entry. */
-       if (ret != -1) {
-               goto done;
-       }
-
-       /* Next check all group entries. */
-       entry_id = SMB_ACL_FIRST_ENTRY;
-       while ( SMB_VFS_SYS_ACL_GET_ENTRY(conn, posix_acl, entry_id, &entry) == 1) {
-               SMB_ACL_TAG_T tagtype;
-               SMB_ACL_PERMSET_T permset;
-               int have_write = -1;
-               int have_read = -1;
-
-               /* get_next... */
-               if (entry_id == SMB_ACL_FIRST_ENTRY)
-                       entry_id = SMB_ACL_NEXT_ENTRY;
-
-               if (SMB_VFS_SYS_ACL_GET_TAG_TYPE(conn, entry, &tagtype) == -1) {
-                       goto check_stat;
-               }
-
-               if (SMB_VFS_SYS_ACL_GET_PERMSET(conn, entry, &permset) == -1) {
-                       goto check_stat;
-               }
-
-               have_read = SMB_VFS_SYS_ACL_GET_PERM(conn, permset, SMB_ACL_READ);
-               if (have_read == -1) {
-                       goto check_stat;
-               }
-
-               have_write = SMB_VFS_SYS_ACL_GET_PERM(conn, permset, SMB_ACL_WRITE);
-               if (have_write == -1) {
-                       goto check_stat;
-               }
-
-               /*
-                * Solaris returns 2 for this if write is available.
-                * canonicalize to 0 or 1.
-                */     
-               have_write = (have_write ? 1 : 0);
-               have_read = (have_read ? 1 : 0);
-
-               switch(tagtype) {
-                       case SMB_ACL_GROUP:
-                       case SMB_ACL_GROUP_OBJ:
-                       {
-                               gid_t *pgid = NULL;
-
-                               if (tagtype == SMB_ACL_GROUP) {
-                                       pgid = (gid_t *)SMB_VFS_SYS_ACL_GET_QUALIFIER(conn, entry);
-                               } else {
-                                       seen_owning_group = True;
-                                       pgid = &psbuf->st_gid;
-                               }
-                               if (pgid == NULL) {
-                                       goto check_stat;
-                               }
-
-                               /*
-                                * Does it match the current effective group
-                                * or supplementary groups ?
-                                */
-                               for (cu_gid = get_current_user_gid_first(&i); cu_gid != (gid_t)-1;
-                                                       cu_gid = get_current_user_gid_next(&i)) {
-                                       if (cu_gid == *pgid) {
-                                               switch (access_mask) {
-                                                       case FILE_READ_DATA:
-                                                               ret = have_read;
-                                                               break;
-                                                       case FILE_WRITE_DATA:
-                                                               ret = have_write;
-                                                               break;
-                                                       default: /* FILE_READ_DATA|FILE_WRITE_DATA */
-                                                               ret = (have_write & have_read);
-                                                               break;
-                                               }
-
-                                               DEBUG(10,("check_posix_acl_group_access: file %s "
-                                                       "match on group %u -> can access.\n",
-                                                       fname, (unsigned int)cu_gid ));
-
-                                               /* If we don't have access permission this entry doesn't
-                                                       terminate the enumeration of the entries. */
-                                               if (ret) {
-                                                       goto done;
-                                               }
-                                               /* But does terminate the group iteration. */
-                                               break;
-                                       }
-                               }
-                               break;
-                       }
-                       default:
-                               continue;
-               }
-       }
-
-       /* If ret is -1 here we didn't match on the user entry or
-          supplemental group entries. */
-       
-       DEBUG(10,("check_posix_acl_group_access: ret = %d before check_stat:\n", ret));
-
-  check_stat:
-
-       /*
-        * We only check the S_I[RW]GRP permissions if we haven't already
-        * seen an owning group SMB_ACL_GROUP_OBJ ace entry. If there is an
-        * SMB_ACL_GROUP_OBJ ace entry then the group bits in st_gid are
-        * the same as the SMB_ACL_MASK bits, not the SMB_ACL_GROUP_OBJ
-        * bits. Thanks to Marc Cousin <mcousin@sigma.fr> for pointing
-        * this out. JRA.
-        */
-
-       if (!seen_owning_group) {
-               /* Do we match on the owning group entry ? */
-               /*
-                * Does it match the current effective group
-                * or supplementary groups ?
-                */
-               for (cu_gid = get_current_user_gid_first(&i); cu_gid != (gid_t)-1;
-                                               cu_gid = get_current_user_gid_next(&i)) {
-                       if (cu_gid == psbuf->st_gid) {
-                               switch (access_mask) {
-                                       case FILE_READ_DATA:
-                                               ret = (psbuf->st_mode & S_IRGRP) ? 1 : 0;
-                                               break;
-                                       case FILE_WRITE_DATA:
-                                               ret = (psbuf->st_mode & S_IWGRP) ? 1 : 0;
-                                               break;
-                                       default: /* FILE_READ_DATA|FILE_WRITE_DATA */
-                                               if ((psbuf->st_mode & (S_IWGRP|S_IRGRP)) == (S_IWGRP|S_IRGRP)) {
-                                                       ret = 1;
-                                               } else {
-                                                       ret = 0;
-                                               }
-                                               break;
-                               }
-                               DEBUG(10,("check_posix_acl_group_access: file %s "
-                                       "match on owning group %u -> %s.\n",
-                                       fname, (unsigned int)psbuf->st_gid,
-                                       ret ? "can access" : "cannot access"));
-                               break;
-                       }
-               }
-
-               if (cu_gid == (gid_t)-1) {
-                       DEBUG(10,("check_posix_acl_group_access: file %s "
-                               "failed to match on user or group in token (ret = %d).\n",
-                               fname, ret ));
-               }
-       }
-
-  done:
-
-       if (posix_acl) {
-               SMB_VFS_SYS_ACL_FREE_ACL(conn, posix_acl);
-       }
-
-       DEBUG(10,("check_posix_acl_group_access: file %s returning (ret = %d).\n", fname, ret ));
-       return ret;
-}
-
-/****************************************************************************
- Actually emulate the in-kernel access checking for delete access. We need
- this to successfully return ACCESS_DENIED on a file open for delete access.
-****************************************************************************/
-
-BOOL can_delete_file_in_directory(connection_struct *conn, const char *fname)
-{
-       SMB_STRUCT_STAT sbuf;  
-       pstring dname;
-       int ret;
-
-       if (!CAN_WRITE(conn)) {
-               return False;
-       }
-
-       /* Get the parent directory permission mask and owners. */
-       pstrcpy(dname, parent_dirname(fname));
-       if(SMB_VFS_STAT(conn, dname, &sbuf) != 0) {
-               return False;
-       }
-       if (!S_ISDIR(sbuf.st_mode)) {
-               return False;
-       }
-       if (current_user.ut.uid == 0 || conn->admin_user) {
-               /* I'm sorry sir, I didn't know you were root... */
-               return True;
-       }
-
-       /* Check primary owner write access. */
-       if (current_user.ut.uid == sbuf.st_uid) {
-               return (sbuf.st_mode & S_IWUSR) ? True : False;
-       }
-
-#ifdef S_ISVTX
-       /* sticky bit means delete only by owner or root. */
-       if (sbuf.st_mode & S_ISVTX) {
-               SMB_STRUCT_STAT sbuf_file;  
-               if(SMB_VFS_STAT(conn, fname, &sbuf_file) != 0) {
-                       return False;
-               }
-               /*
-                * Patch from SATOH Fumiyasu <fumiyas@miraclelinux.com>
-                * for bug #3348. Don't assume owning sticky bit
-                * directory means write access allowed.
-                */
-               if (current_user.ut.uid != sbuf_file.st_uid) {
-                       return False;
-               }
-       }
-#endif
-
-       /* Check group or explicit user acl entry write access. */
-       ret = check_posix_acl_group_access(conn, dname, &sbuf, FILE_WRITE_DATA);
-       if (ret == 0 || ret == 1) {
-               return ret ? True : False;
-       }
-
-       /* Finally check other write access. */
-       return (sbuf.st_mode & S_IWOTH) ? True : False;
-}
-
-/****************************************************************************
- Actually emulate the in-kernel access checking for read/write access. We need
- this to successfully check for ability to write for dos filetimes.
- Note this doesn't take into account share write permissions.
-****************************************************************************/
-
-BOOL can_access_file(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf, uint32 access_mask)
-{
-       int ret;
-
-       if (!(access_mask & (FILE_READ_DATA|FILE_WRITE_DATA))) {
-               return False;
-       }
-       access_mask &= (FILE_READ_DATA|FILE_WRITE_DATA);
-
-       DEBUG(10,("can_access_file: requesting 0x%x on file %s\n",
-               (unsigned int)access_mask, fname ));
-
-       if (current_user.ut.uid == 0 || conn->admin_user) {
-               /* I'm sorry sir, I didn't know you were root... */
-               return True;
-       }
-
-       if (!VALID_STAT(*psbuf)) {
-               /* Get the file permission mask and owners. */
-               if(SMB_VFS_STAT(conn, fname, psbuf) != 0) {
-                       return False;
-               }
-       }
-
-       /* Check primary owner access. */
-       if (current_user.ut.uid == psbuf->st_uid) {
-               switch (access_mask) {
-                       case FILE_READ_DATA:
-                               return (psbuf->st_mode & S_IRUSR) ? True : False;
-
-                       case FILE_WRITE_DATA:
-                               return (psbuf->st_mode & S_IWUSR) ? True : False;
-
-                       default: /* FILE_READ_DATA|FILE_WRITE_DATA */
-
-                               if ((psbuf->st_mode & (S_IWUSR|S_IRUSR)) == (S_IWUSR|S_IRUSR)) {
-                                       return True;
-                               } else {
-                                       return False;
-                               }
-               }
-       }
-
-       /* Check group or explicit user acl entry access. */
-       ret = check_posix_acl_group_access(conn, fname, psbuf, access_mask);
-       if (ret == 0 || ret == 1) {
-               return ret ? True : False;
-       }
-
-       /* Finally check other access. */
-       switch (access_mask) {
-               case FILE_READ_DATA:
-                       return (psbuf->st_mode & S_IROTH) ? True : False;
-
-               case FILE_WRITE_DATA:
-                       return (psbuf->st_mode & S_IWOTH) ? True : False;
-
-               default: /* FILE_READ_DATA|FILE_WRITE_DATA */
-
-                       if ((psbuf->st_mode & (S_IWOTH|S_IROTH)) == (S_IWOTH|S_IROTH)) {
-                               return True;
-                       }
-       }
-       return False;
-}
-
-/****************************************************************************
- Userspace check for write access.
- Note this doesn't take into account share write permissions.
-****************************************************************************/
-
-BOOL can_write_to_file(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf)
-{
-       return can_access_file(conn, fname, psbuf, FILE_WRITE_DATA);
-}
-
 /********************************************************************
  Pull the NT ACL from a file on disk or the OpenEventlog() access
  check.  Caller is responsible for freeing the returned security
  descriptor via TALLOC_FREE().  This is designed for dealing with 
  user space access checks in smbd outside of the VFS.  For example,
  checking access rights in OpenEventlog().
+
  Assume we are dealing with files (for now)
 ********************************************************************/
 
-SEC_DESCget_nt_acl_no_snum( TALLOC_CTX *ctx, const char *fname)
+SEC_DESC *get_nt_acl_no_snum( TALLOC_CTX *ctx, const char *fname)
 {
        SEC_DESC *psd, *ret_sd;
-       connection_struct conn;
+       connection_struct *conn;
        files_struct finfo;
        struct fd_handle fh;
-       pstring path;
-       pstring filename;
-       
-       ZERO_STRUCT( conn );
-       
-       if ( !(conn.mem_ctx = talloc_init( "novfs_get_nt_acl" )) ) {
-               DEBUG(0,("get_nt_acl_no_snum: talloc() failed!\n"));
+
+       conn = TALLOC_ZERO_P(ctx, connection_struct);
+       if (conn == NULL) {
+               DEBUG(0, ("talloc failed\n"));
                return NULL;
        }
 
-       if (!(conn.params = TALLOC_P(conn.mem_ctx, struct share_params))) {
+       if (!(conn->params = TALLOC_P(conn, struct share_params))) {
                DEBUG(0,("get_nt_acl_no_snum: talloc() failed!\n"));
-               TALLOC_FREE(conn.mem_ctx);
+               TALLOC_FREE(conn);
                return NULL;
        }
 
-       conn.params->service = -1;
-       
-       pstrcpy( path, "/" );
-       set_conn_connectpath(&conn, path);
-       
-       if (!smbd_vfs_init(&conn)) {
+       conn->params->service = -1;
+
+       set_conn_connectpath(conn, "/");
+
+       if (!smbd_vfs_init(conn)) {
                DEBUG(0,("get_nt_acl_no_snum: Unable to create a fake connection struct!\n"));
-               conn_free_internal( &conn );
+               conn_free_internal( conn );
                return NULL;
         }
-       
+
        ZERO_STRUCT( finfo );
        ZERO_STRUCT( fh );
-       
+
        finfo.fnum = -1;
-       finfo.conn = &conn;
+       finfo.conn = conn;
        finfo.fh = &fh;
        finfo.fh->fd = -1;
-       pstrcpy( filename, fname );
-       finfo.fsp_name = filename;
-       
-       if (get_nt_acl( &finfo, DACL_SECURITY_INFORMATION, &psd ) == 0) {
+       finfo.fsp_name = CONST_DISCARD(char *,fname);
+
+       if (!NT_STATUS_IS_OK(SMB_VFS_FGET_NT_ACL( &finfo, DACL_SECURITY_INFORMATION, &psd))) {
                DEBUG(0,("get_nt_acl_no_snum: get_nt_acl returned zero.\n"));
-               conn_free_internal( &conn );
+               conn_free_internal( conn );
                return NULL;
        }
-       
+
        ret_sd = dup_sec_desc( ctx, psd );
-       
-       conn_free_internal( &conn );
-       
+
+       conn_free_internal( conn );
+
        return ret_sd;
 }