libcli/smb Move cifs posix helper functions and headers in common

unix_perms_to_wire() was a duplicate symbol in the top level build.

Andrew Bartlett

4 files changed, 552 insertions, 0 deletions

diff --git a/libcli/smb/smb_common.h b/libcli/smb/smb_common.h
index ca04eb30c3..d8339cbb7f 100644
--- a/libcli/smb/smb_common.h
+++ b/libcli/smb/smb_common.h
@@ -26,5 +26,6 @@
 #include "../libcli/smb/smb2_create_blob.h"
 #include "../libcli/smb/smb_constants.h"
 #include "../libcli/smb/smb_util.h"
+#include "../libcli/smb/smb_unix_ext.h"
 
 #endif
diff --git a/libcli/smb/smb_unix_ext.h b/libcli/smb/smb_unix_ext.h
new file mode 100644
index 0000000000..9516d310ad
--- /dev/null
+++ b/libcli/smb/smb_unix_ext.h
@@ -0,0 +1,452 @@
+/* 
+   Unix SMB/CIFS implementation.
+   SMB transaction2 handling
+
+   Copyright (C) James Peach 2007
+   Copyright (C) Jeremy Allison 1994-2002.
+
+   Extensively modified by Andrew Tridgell, 1995
+
+   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 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* UNIX CIFS Extensions - created by HP */
+/*
+ * UNIX CIFS Extensions have the range 0x200 - 0x2FF reserved.
+ * Supposedly Microsoft have agreed to this.
+ */
+
+#define MIN_UNIX_INFO_LEVEL 0x200
+#define MAX_UNIX_INFO_LEVEL 0x2FF
+
+#define INFO_LEVEL_IS_UNIX(level) (((level) >= MIN_UNIX_INFO_LEVEL) && ((level) <= MAX_UNIX_INFO_LEVEL))
+
+#define SMB_QUERY_FILE_UNIX_BASIC      0x200   /* UNIX File Info*/
+#define SMB_SET_FILE_UNIX_BASIC        0x200
+#define SMB_SET_FILE_UNIX_INFO2        0x20B   /* UNIX File Info2 */
+
+#define SMB_MODE_NO_CHANGE                 0xFFFFFFFF     /* file mode value which */
+                                              /* means "don't change it" */
+#define SMB_UID_NO_CHANGE                  0xFFFFFFFF
+#define SMB_GID_NO_CHANGE                  0xFFFFFFFF
+
+#define SMB_SIZE_NO_CHANGE_LO              0xFFFFFFFF
+#define SMB_SIZE_NO_CHANGE_HI              0xFFFFFFFF
+ 
+#define SMB_TIME_NO_CHANGE_LO              0xFFFFFFFF
+#define SMB_TIME_NO_CHANGE_HI              0xFFFFFFFF
+
+/*
+Offset Size         Name
+0      LARGE_INTEGER EndOfFile                File size
+8      LARGE_INTEGER Blocks                   Number of bytes used on disk (st_blocks).
+16     LARGE_INTEGER CreationTime             Creation time
+24     LARGE_INTEGER LastAccessTime           Last access time
+32     LARGE_INTEGER LastModificationTime     Last modification time
+40     LARGE_INTEGER Uid                      Numeric user id for the owner
+48     LARGE_INTEGER Gid                      Numeric group id of owner
+56     ULONG Type                             Enumeration specifying the pathname type:
+                                              0 -- File
+                                              1 -- Directory
+                                              2 -- Symbolic link
+                                              3 -- Character device
+                                              4 -- Block device
+                                              5 -- FIFO (named pipe)
+                                              6 -- Unix domain socket
+
+60     LARGE_INTEGER devmajor                 Major device number if type is device
+68     LARGE_INTEGER devminor                 Minor device number if type is device
+76     LARGE_INTEGER uniqueid                 This is a server-assigned unique id for the file. The client
+                                              will typically map this onto an inode number. The scope of
+                                              uniqueness is the share.
+84     LARGE_INTEGER permissions              Standard UNIX file permissions  - see below.
+92     LARGE_INTEGER nlinks                   The number of directory entries that map to this entry
+                                              (number of hard links)
+
+100 - end.
+*/
+
+#define SMB_FILE_UNIX_BASIC_SIZE 100
+
+/* UNIX filetype mappings. */
+
+#define UNIX_TYPE_FILE 0
+#define UNIX_TYPE_DIR 1
+#define UNIX_TYPE_SYMLINK 2
+#define UNIX_TYPE_CHARDEV 3
+#define UNIX_TYPE_BLKDEV 4
+#define UNIX_TYPE_FIFO 5
+#define UNIX_TYPE_SOCKET 6
+#define UNIX_TYPE_UNKNOWN 0xFFFFFFFF
+
+/*
+ * Oh this is fun. "Standard UNIX permissions" has no
+ * meaning in POSIX. We need to define the mapping onto
+ * and off the wire as this was not done in the original HP
+ * spec. JRA.
+ */
+
+#define UNIX_X_OTH			0000001
+#define UNIX_W_OTH			0000002
+#define UNIX_R_OTH			0000004
+#define UNIX_X_GRP			0000010
+#define UNIX_W_GRP                      0000020
+#define UNIX_R_GRP                      0000040
+#define UNIX_X_USR                      0000100
+#define UNIX_W_USR                      0000200
+#define UNIX_R_USR                      0000400
+#define UNIX_STICKY                     0001000
+#define UNIX_SET_GID                    0002000
+#define UNIX_SET_UID                    0004000
+
+/* Masks for the above */
+#define UNIX_OTH_MASK                   0000007
+#define UNIX_GRP_MASK                   0000070
+#define UNIX_USR_MASK                   0000700
+#define UNIX_PERM_MASK                  0000777
+#define UNIX_EXTRA_MASK                 0007000
+#define UNIX_ALL_MASK                   0007777
+
+/* Flags for chflags (CIFS_UNIX_EXTATTR_CAP capability) and
+ * SMB_QUERY_FILE_UNIX_INFO2.
+ */
+#define EXT_SECURE_DELETE               0x00000001
+#define EXT_ENABLE_UNDELETE             0x00000002
+#define EXT_SYNCHRONOUS                 0x00000004
+#define EXT_IMMUTABLE			0x00000008
+#define EXT_OPEN_APPEND_ONLY            0x00000010
+#define EXT_DO_NOT_BACKUP               0x00000020
+#define EXT_NO_UPDATE_ATIME             0x00000040
+#define EXT_HIDDEN			0x00000080
+
+#define SMB_QUERY_FILE_UNIX_LINK       0x201
+#define SMB_SET_FILE_UNIX_LINK         0x201
+#define SMB_SET_FILE_UNIX_HLINK        0x203
+/* SMB_QUERY_POSIX_ACL 0x204 see below */
+#define SMB_QUERY_XATTR                0x205 /* need for non-user XATTRs */
+#define SMB_QUERY_ATTR_FLAGS           0x206 /* chflags, chattr */
+#define SMB_SET_ATTR_FLAGS             0x206 
+#define SMB_QUERY_POSIX_PERMISSION     0x207
+/* Only valid for qfileinfo */
+#define SMB_QUERY_POSIX_LOCK	       0x208
+/* Only valid for setfileinfo */
+#define SMB_SET_POSIX_LOCK	       0x208
+
+/* The set info levels for POSIX path operations. */
+#define SMB_POSIX_PATH_OPEN	       0x209
+#define SMB_POSIX_PATH_UNLINK	       0x20A
+
+#define SMB_QUERY_FILE_UNIX_INFO2      0x20B   /* UNIX File Info2 */
+#define SMB_SET_FILE_UNIX_INFO2        0x20B
+
+/*
+SMB_QUERY_FILE_UNIX_INFO2 is SMB_QUERY_FILE_UNIX_BASIC with create
+time and file flags appended. The corresponding info level for
+findfirst/findnext is SMB_FIND_FILE_UNIX_INFO2.
+    Size    Offset  Value
+    ---------------------
+    0      LARGE_INTEGER EndOfFile  File size
+    8      LARGE_INTEGER Blocks     Number of blocks used on disk
+    16     LARGE_INTEGER ChangeTime Attribute change time
+    24     LARGE_INTEGER LastAccessTime           Last access time
+    32     LARGE_INTEGER LastModificationTime     Last modification time
+    40     LARGE_INTEGER Uid        Numeric user id for the owner
+    48     LARGE_INTEGER Gid        Numeric group id of owner
+    56     ULONG Type               Enumeration specifying the file type
+    60     LARGE_INTEGER devmajor   Major device number if type is device
+    68     LARGE_INTEGER devminor   Minor device number if type is device
+    76     LARGE_INTEGER uniqueid   This is a server-assigned unique id
+    84     LARGE_INTEGER permissions		Standard UNIX permissions
+    92     LARGE_INTEGER nlinks			Number of hard links
+    100    LARGE_INTEGER CreationTime		Create/birth time
+    108    ULONG FileFlags          File flags enumeration
+    112    ULONG FileFlagsMask      Mask of valid flags
+*/
+
+/* Transact 2 Find First levels */
+#define SMB_FIND_FILE_UNIX             0x202
+#define SMB_FIND_FILE_UNIX_INFO2       0x20B /* UNIX File Info2 */
+
+#define SMB_FILE_UNIX_INFO2_SIZE 116
+
+/*
+ Info level for TRANS2_QFSINFO - returns version of CIFS UNIX extensions, plus
+ 64-bits worth of capability fun :-).
+ Use the same info level for TRANS2_SETFSINFO
+*/
+
+#define SMB_QUERY_CIFS_UNIX_INFO      0x200
+#define SMB_SET_CIFS_UNIX_INFO        0x200
+
+/* Returns or sets the following.
+
+  UINT16             major version number
+  UINT16             minor version number
+  LARGE_INTEGER      capability bitfield
+
+*/
+
+#define CIFS_UNIX_MAJOR_VERSION 1
+#define CIFS_UNIX_MINOR_VERSION 0
+
+#define CIFS_UNIX_FCNTL_LOCKS_CAP           0x1
+#define CIFS_UNIX_POSIX_ACLS_CAP            0x2
+#define CIFS_UNIX_XATTTR_CAP	            0x4 /* for support of other xattr
+						namespaces such as system,
+						security and trusted */
+#define CIFS_UNIX_EXTATTR_CAP		    0x8 /* for support of chattr
+						(chflags) and lsattr */
+#define CIFS_UNIX_POSIX_PATHNAMES_CAP	   0x10 /* Use POSIX pathnames on the wire. */
+#define CIFS_UNIX_POSIX_PATH_OPERATIONS_CAP	   0x20 /* We can cope with POSIX open/mkdir/unlink etc. */
+#define CIFS_UNIX_LARGE_READ_CAP           0x40 /* We can cope with 24 bit reads in readX. */
+#define CIFS_UNIX_LARGE_WRITE_CAP          0x80 /* We can cope with 24 bit writes in writeX. */
+#define CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP      0x100 /* We can do SPNEGO negotiations for encryption. */
+#define CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP    0x200 /* We *must* SPNEGO negotiations for encryption. */
+
+#define SMB_QUERY_POSIX_FS_INFO     0x201
+
+/* Returns FILE_SYSTEM_POSIX_INFO struct as follows
+      (NB   For undefined values return -1 in that field) 
+   le32 OptimalTransferSize;    bsize on some os, iosize on other os, This 
+				is a hint to the client about best size. Server
+				can return -1 if no preference, ie if SMB 
+				negotiated size is adequate for optimal
+				read/write performance
+   le32 BlockSize; (often 512 bytes) NB: BlockSize * TotalBlocks = disk space
+   le64 TotalBlocks;  redundant with other infolevels but easy to ret here
+   le64 BlocksAvail;  although redundant, easy to return
+   le64 UserBlocksAvail;      bavail 
+   le64 TotalFileNodes;
+   le64 FreeFileNodes;
+   le64 FileSysIdentifier;    fsid 
+   (NB statfs field Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call) 
+   (NB statfs field flags can come from FILE_SYSTEM_DEVICE_INFO call)  
+*/
+
+#define SMB_QUERY_POSIX_WHO_AM_I  0x202 /* QFS Info */
+/* returns:
+        __u32 flags;  0 = Authenticated user 1 = GUEST 
+        __u32 mask;  which flags bits server understands ie 0x0001 
+        __u64 unix_user_id;
+        __u64 unix_user_gid;
+        __u32 number_of_supplementary_gids;  may be zero 
+        __u32 number_of_sids;  may be zero
+        __u32 length_of_sid_array;  in bytes - may be zero 
+        __u32 pad;  reserved - MBZ 
+        __u64 gid_array[0];  may be empty 
+        __u8 * psid_list  may be empty
+*/
+
+/* ... more as we think of them :-). */
+
+/* SMB POSIX ACL definitions. */
+/* Wire format is (all little endian) :
+
+[2 bytes]              -     Version number.
+[2 bytes]              -     Number of ACE entries to follow.
+[2 bytes]              -     Number of default ACE entries to follow.
+-------------------------------------
+^
+|
+ACE entries
+|
+v
+-------------------------------------
+^
+|
+Default ACE entries
+|
+v
+-------------------------------------
+
+Where an ACE entry looks like :
+
+[1 byte]           - Entry type.
+
+Entry types are :
+
+ACL_USER_OBJ            0x01
+ACL_USER                0x02
+ACL_GROUP_OBJ           0x04
+ACL_GROUP               0x08
+ACL_MASK                0x10
+ACL_OTHER               0x20
+
+[1 byte]          - permissions (perm_t)
+
+perm_t types are :
+
+ACL_READ                0x04
+ACL_WRITE               0x02
+ACL_EXECUTE             0x01
+
+[8 bytes]         - uid/gid to apply this permission to.
+
+In the same format as the uid/gid fields in the other
+UNIX extensions definitions. Use 0xFFFFFFFFFFFFFFFF for
+the MASK and OTHER entry types.
+
+If the Number of ACE entries for either file or default ACE's
+is set to 0xFFFF this means ignore this kind of ACE (and the
+number of entries sent will be zero.
+
+*/
+
+#define SMB_QUERY_POSIX_WHOAMI     0x202
+
+enum smb_whoami_flags {
+    SMB_WHOAMI_GUEST = 0x1 /* Logged in as (or squashed to) guest */
+};
+
+/* Mask of which WHOAMI bits are valid. This should make it easier for clients
+ * to cope with servers that have different sets of WHOAMI flags (as more get
+ * added).
+ */
+#define SMB_WHOAMI_MASK 0x00000001
+
+/*
+   SMBWhoami - Query the user mapping performed by the server for the
+   connected tree. This is a subcommand of the TRANS2_QFSINFO.
+
+   Returns:
+	4 bytes unsigned -	mapping flags (smb_whoami_flags)
+	4 bytes unsigned -	flags mask
+
+	8 bytes unsigned -	primary UID
+	8 bytes unsigned -	primary GID
+	4 bytes unsigned -	number of supplementary GIDs
+	4 bytes unsigned -	number of SIDs
+	4 bytes unsigned -	SID list byte count
+	4 bytes -		pad / reserved (must be zero)
+
+	8 bytes unsigned[] -	list of GIDs (may be empty)
+	struct dom_sid[] -		list of SIDs (may be empty)
+*/
+
+/*
+ * The following trans2 is done between client and server
+ * as a FSINFO call to set up the encryption state for transport
+ * encryption.
+ * This is a subcommand of the TRANS2_QFSINFO.
+ *
+ * The request looks like :
+ *
+ * [data block] -> SPNEGO framed GSSAPI request.
+ *
+ * The reply looks like :
+ *
+ * [data block] -> SPNEGO framed GSSAPI reply - if error
+ *                 is NT_STATUS_OK then we're done, if it's
+ *                 NT_STATUS_MORE_PROCESSING_REQUIRED then the
+ *                 client needs to keep going. If it's an
+ *                 error it can be any NT_STATUS error.
+ *
+ */
+
+#define SMB_REQUEST_TRANSPORT_ENCRYPTION     0x203 /* QFSINFO */
+
+
+/* The query/set info levels for POSIX ACLs. */
+#define SMB_QUERY_POSIX_ACL  0x204
+#define SMB_SET_POSIX_ACL  0x204
+
+/* Current on the wire ACL version. */
+#define SMB_POSIX_ACL_VERSION 1
+
+/* ACE entry type. */
+#define SMB_POSIX_ACL_USER_OBJ            0x01
+#define SMB_POSIX_ACL_USER                0x02
+#define SMB_POSIX_ACL_GROUP_OBJ           0x04
+#define SMB_POSIX_ACL_GROUP               0x08
+#define SMB_POSIX_ACL_MASK                0x10
+#define SMB_POSIX_ACL_OTHER               0x20
+
+/* perm_t types. */
+#define SMB_POSIX_ACL_READ                0x04
+#define SMB_POSIX_ACL_WRITE               0x02
+#define SMB_POSIX_ACL_EXECUTE             0x01
+
+#define SMB_POSIX_ACL_HEADER_SIZE         6
+#define SMB_POSIX_ACL_ENTRY_SIZE         10
+
+#define SMB_POSIX_IGNORE_ACE_ENTRIES	0xFFFF
+
+/* Definition of data block of SMB_SET_POSIX_LOCK */
+/*
+  [2 bytes] lock_type - 0 = Read, 1 = Write, 2 = Unlock
+  [2 bytes] lock_flags - 1 = Wait (only valid for setlock)
+  [4 bytes] pid = locking context.
+  [8 bytes] start = unsigned 64 bits.
+  [8 bytes] length = unsigned 64 bits.
+*/
+
+#define POSIX_LOCK_TYPE_OFFSET 0
+#define POSIX_LOCK_FLAGS_OFFSET 2
+#define POSIX_LOCK_PID_OFFSET 4
+#define POSIX_LOCK_START_OFFSET 8
+#define POSIX_LOCK_LEN_OFFSET 16
+#define POSIX_LOCK_DATA_SIZE 24
+
+#define POSIX_LOCK_FLAG_NOWAIT 0
+#define POSIX_LOCK_FLAG_WAIT 1
+
+#define POSIX_LOCK_TYPE_READ 0
+#define POSIX_LOCK_TYPE_WRITE 1
+#define POSIX_LOCK_TYPE_UNLOCK 2
+
+/* SMB_POSIX_PATH_OPEN "open_mode" definitions. */
+#define SMB_O_RDONLY			  0x1
+#define SMB_O_WRONLY			  0x2
+#define SMB_O_RDWR			  0x4
+
+#define SMB_ACCMODE			  0x7
+
+#define SMB_O_CREAT			 0x10
+#define SMB_O_EXCL			 0x20
+#define SMB_O_TRUNC			 0x40
+#define SMB_O_APPEND			 0x80
+#define SMB_O_SYNC			0x100
+#define SMB_O_DIRECTORY			0x200
+#define SMB_O_NOFOLLOW			0x400
+#define SMB_O_DIRECT			0x800
+
+/* Definition of request data block for SMB_POSIX_PATH_OPEN */
+/*
+  [4 bytes] flags (as smb_ntcreate_Flags).
+  [4 bytes] open_mode			- SMB_O_xxx flags above.
+  [8 bytes] mode_t (permissions)	- same encoding as "Standard UNIX permissions" above in SMB_SET_FILE_UNIX_BASIC.
+  [2 bytes] ret_info_level	- optimization. Info level to be returned.
+*/
+
+/* Definition of reply data block for SMB_POSIX_PATH_OPEN */
+
+#define SMB_NO_INFO_LEVEL_RETURNED 0xFFFF
+
+/*
+  [2 bytes] - flags field. Identical to flags reply for oplock response field in SMBNTCreateX)
+  [2 bytes] - FID returned.
+  [4 bytes] - CreateAction (same as in NTCreateX response).
+  [2 bytes] - reply info level    - as requested or 0xFFFF if not available.
+  [2 bytes] - padding (must be zero)
+  [n bytes] - info level reply  - if available.
+*/
+
+/* Definition of request data block for SMB_POSIX_UNLINK */
+/*
+  [2 bytes] flags (defined below).
+*/
+
+#define SMB_POSIX_UNLINK_FILE_TARGET 0
+#define SMB_POSIX_UNLINK_DIRECTORY_TARGET 1
+
diff --git a/libcli/smb/smb_util.h b/libcli/smb/smb_util.h
index 8a67c30913..b5a06524cb 100644
--- a/libcli/smb/smb_util.h
+++ b/libcli/smb/smb_util.h
@@ -20,3 +20,6 @@
 */
 
 char *attrib_string(TALLOC_CTX *mem_ctx, uint32_t attrib);
+uint32_t unix_perms_to_wire(mode_t perms);
+mode_t wire_perms_to_unix(uint32_t perms);
+mode_t unix_filetype_from_wire(uint32_t wire_type);
diff --git a/libcli/smb/util.c b/libcli/smb/util.c
index f8fa56ff6a..b8c3dc5e96 100644
--- a/libcli/smb/util.c
+++ b/libcli/smb/util.c
@@ -21,6 +21,7 @@
 
 #include "includes.h"
 #include "libcli/smb/smb_common.h"
+#include "system/filesys.h"
 
 /**
  Return a string representing a CIFS attribute for a file.
@@ -67,3 +68,98 @@ char *attrib_string(TALLOC_CTX *mem_ctx, uint32_t attrib)
 
 	return ret;
 }
+
+/****************************************************************************
+ Map standard UNIX permissions onto wire representations.
+****************************************************************************/
+
+uint32_t unix_perms_to_wire(mode_t perms)
+{
+        unsigned int ret = 0;
+
+        ret |= ((perms & S_IXOTH) ?  UNIX_X_OTH : 0);
+        ret |= ((perms & S_IWOTH) ?  UNIX_W_OTH : 0);
+        ret |= ((perms & S_IROTH) ?  UNIX_R_OTH : 0);
+        ret |= ((perms & S_IXGRP) ?  UNIX_X_GRP : 0);
+        ret |= ((perms & S_IWGRP) ?  UNIX_W_GRP : 0);
+        ret |= ((perms & S_IRGRP) ?  UNIX_R_GRP : 0);
+        ret |= ((perms & S_IXUSR) ?  UNIX_X_USR : 0);
+        ret |= ((perms & S_IWUSR) ?  UNIX_W_USR : 0);
+        ret |= ((perms & S_IRUSR) ?  UNIX_R_USR : 0);
+#ifdef S_ISVTX
+        ret |= ((perms & S_ISVTX) ?  UNIX_STICKY : 0);
+#endif
+#ifdef S_ISGID
+        ret |= ((perms & S_ISGID) ?  UNIX_SET_GID : 0);
+#endif
+#ifdef S_ISUID
+        ret |= ((perms & S_ISUID) ?  UNIX_SET_UID : 0);
+#endif
+        return ret;
+}
+
+/****************************************************************************
+ Map wire permissions to standard UNIX.
+****************************************************************************/
+
+mode_t wire_perms_to_unix(uint32_t perms)
+{
+        mode_t ret = (mode_t)0;
+
+        ret |= ((perms & UNIX_X_OTH) ? S_IXOTH : 0);
+        ret |= ((perms & UNIX_W_OTH) ? S_IWOTH : 0);
+        ret |= ((perms & UNIX_R_OTH) ? S_IROTH : 0);
+        ret |= ((perms & UNIX_X_GRP) ? S_IXGRP : 0);
+        ret |= ((perms & UNIX_W_GRP) ? S_IWGRP : 0);
+        ret |= ((perms & UNIX_R_GRP) ? S_IRGRP : 0);
+        ret |= ((perms & UNIX_X_USR) ? S_IXUSR : 0);
+        ret |= ((perms & UNIX_W_USR) ? S_IWUSR : 0);
+        ret |= ((perms & UNIX_R_USR) ? S_IRUSR : 0);
+#ifdef S_ISVTX
+        ret |= ((perms & UNIX_STICKY) ? S_ISVTX : 0);
+#endif
+#ifdef S_ISGID
+        ret |= ((perms & UNIX_SET_GID) ? S_ISGID : 0);
+#endif
+#ifdef S_ISUID
+        ret |= ((perms & UNIX_SET_UID) ? S_ISUID : 0);
+#endif
+        return ret;
+}
+
+/****************************************************************************
+ Return the file type from the wire filetype for UNIX extensions.
+****************************************************************************/
+
+mode_t unix_filetype_from_wire(uint32_t wire_type)
+{
+	switch (wire_type) {
+		case UNIX_TYPE_FILE:
+			return S_IFREG;
+		case UNIX_TYPE_DIR:
+			return S_IFDIR;
+#ifdef S_IFLNK
+		case UNIX_TYPE_SYMLINK:
+			return S_IFLNK;
+#endif
+#ifdef S_IFCHR
+		case UNIX_TYPE_CHARDEV:
+			return S_IFCHR;
+#endif
+#ifdef S_IFBLK
+		case UNIX_TYPE_BLKDEV:
+			return S_IFBLK;
+#endif
+#ifdef S_IFIFO
+		case UNIX_TYPE_FIFO:
+			return S_IFIFO;
+#endif
+#ifdef S_IFSOCK
+		case UNIX_TYPE_SOCKET:
+			return S_IFSOCK;
+#endif
+		default:
+			return (mode_t)0;
+	}
+}
+