232 lines
14 KiB
HTML
232 lines
14 KiB
HTML
<HTML>
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<HEAD>
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<TITLE>Int 21/AH=60h
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</TITLE>
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<META NAME="Description" CONTENT="
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Int 21/AH=60h - DOS 3.0+ - TRUENAME - CANONICALIZE FILENAME OR PATH -
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AH = 60h
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DS:SI - ASCIZ filename or path
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ES:DI - 128-byte buffer for canonicalized name
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Return: CF set on error
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AX = error code
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02h invalid component in directory path or drive letter only
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03h malformed path or invalid drive letter
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ES:DI buffer unchanged
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CF clear if successful
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AH = 00h or 3Ah (DOS 6.1/6.2 for character device)
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">
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<META NAME="robots" CONTENT="none">
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</HEAD>
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<BODY BGCOLOR="#FFD0A0">
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<center>
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<h2>Int 21/AH=60h
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</h2>
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</center><p>
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<table border=1 cellpadding=3 cellspacing=1>
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<td>
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<a href="rb-3136.htm" tppabs="http://www.ctyme.com/intr/rb-3136.htm">
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<img src="lup.gif" tppabs="http://graphics.ctyme.com/gif/lup.gif" border=0 alt=Prev></a>
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<img src="lhome.gif" tppabs="http://graphics.ctyme.com/gif/lhome.gif" border=0 alt=Ralf Brown Page></a>
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<td><a href="int.htm" tppabs="http://www.ctyme.com/intr/int.htm">Interrups</a></td>
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<td><a href="cat.htm" tppabs="http://www.ctyme.com/intr/cat.htm">Categories</a></td>
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<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
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</td></table><p>
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<p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
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<h3><font color=#C00040>DOS 3.0+ - TRUENAME - CANONICALIZE FILENAME OR PATH</font></h3>
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<PRE>
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AH = 60h
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DS:SI -> ASCIZ filename or path
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ES:DI -> 128-byte buffer for canonicalized name<br>
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<p><b>Return:</b><br>CF set on error
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AX = error code
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02h invalid component in directory path or drive letter only
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03h malformed path or invalid drive letter
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ES:DI buffer unchanged
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CF clear if successful
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AH = 00h or 3Ah (DOS 6.1/6.2 for character device)
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AL = destroyed (00h or 2Fh or 5Ch or last character of current
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directory on drive)
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buffer filled with qualified name of form D:\PATH\FILE.EXT or
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\\MACHINE\PATH\FILE.EXT
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</PRE>
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<p><b>Desc:</b>
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Determine the canonical name of the specified filename or path,
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corresponding to the undocumented TRUENAME command in COMMAND.COM
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<p><b>Notes:</b>
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The input path need not actually exist.
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Letters are uppercased, forward slashes converted to backslashes,
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asterisks converted to appropriate number of question marks, and
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file and directory names are truncated to 8.3 if necessary. (DR DOS
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3.41 and 5.0 do not expand asterisks).
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'.' and '..' in the path are resolved.
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Filespecs on local drives always start with "d:", those on network
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drives always start with "\\".
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If path string is on a JOINed drive, the returned name is the one that
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would be needed if the drive were not JOINed; similarly for a
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SUBSTed, ASSIGNed, or network drive letter. Because of this, it is
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possible to get a qualified name that is not legal under the current
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combination of SUBSTs, ASSIGNs, JOINs, and network redirections.
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Under DOS 3.3 through 6.00, a device name is translated differently if
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the device name does not have an explicit directory or the directory
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is \DEV (relative directory DEV from the root directory works
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correctly). In these cases, the returned string consists of the
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unchanged device name and extension appended to the string X:/
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(forward slash instead of backward slash as in all other cases) where
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X is the default or explicit drive letter..
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Under MS-DOS 7.0, this call returns the short name for any
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long-filename portions of the provided pathname or filename.
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Functions which take pathnames require canonical paths if invoked via
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INT 21/AX=5D00h.
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Supported by OS/2 v1.1 compatibility box.
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NetWare 2.1x does not support characters with the high bit set; early
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versions of NetWare 386 support such characters except in this call.
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In addition, NetWare returns error code 3 for the path "X:\"; one
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should use "X:\." instead..
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Novell DOS 7 reportedly has difficulty with non-MS-DOS filenames on
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network drives, and can return "D:" instead of "SERVER/VOLUME".
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For DOS 3.3-6.0, the input and output buffers may be the same, as the
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canonicalized name is built in an internal buffer and copied to the
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specified output buffer as the very last step.
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For DR DOS 6.0, this function is not automatically called when on a
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network. Device drivers reportedly cannot make this call from their
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INIT function. Using the same pointer for both input and output
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buffers is not supported in the April 1992 and earlier versions of
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DR DOS.
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Windows for Workgroups 3.11, Windows95 and even MS-DOS 7.00 only
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return the local drive path; to obtain network paths use
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INT 21/AX=5F02h or INT 21/AX=5F46h instead.
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Corel's CORELCDX and MSCDEX without the /S switch return canonical
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names of the form "\\D.\A.\path", where "D" is the CD-ROM drive
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letter and "A" appears to indicate the first physical CD-ROM drive;
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MSCDEX with the /S switch returns a canonical name with embedded
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blanks. Novell DOS 7 NWCDEX as of the 11/16/94 update returns the
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same canonical path as MSCDEX; earlier revisions returned
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"Cdex. D:\path", where "D" is the CD-ROM drive letter.
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The Windows95 MSCDEX-replacement VxD returns "D:\path", even though the
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MS-DOS 7.00 MSCDEX behaves identically to older versions (above)
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<p><b>BUG:</b>
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Windows95 incorrectly treats filenames where the first two characters
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after the drive letter and colon are both slashes (either forward
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or backward) as a UNC (network name) and requires several seconds
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to attempt to resolve the name before returning an unchanged
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string
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<p><b>See Also:</b>
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<a href="rb-3042.htm" tppabs="http://www.ctyme.com/intr/rb-3042.htm">AX=5F02h</a> - <a href="rb-3119.htm" tppabs="http://www.ctyme.com/intr/rb-3119.htm">AX=5FB3h</a> - <a href="rb-3206.htm" tppabs="http://www.ctyme.com/intr/rb-3206.htm">AX=7160h/CL=00h</a> - <a href="rb-4340.htm" tppabs="http://www.ctyme.com/intr/rb-4340.htm">INT 2F/
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<p>
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<b>Category: <a href="cat-010.htm" tppabs="http://www.ctyme.com/intr/cat-010.htm">
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DOS Kernel</a>
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- <a href="int-21.htm" tppabs="http://www.ctyme.com/intr/int-21.htm">
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Int 21h</a>
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- <a href="alpha-d.htm" tppabs="http://www.ctyme.com/intr/alpha-d.htm">
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D</a>
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</b><p><p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
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<table border=1 cellpadding=3 cellspacing=1>
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<td>
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<a href="rb-3136.htm" tppabs="http://www.ctyme.com/intr/rb-3136.htm">
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<img src="lup.gif" tppabs="http://graphics.ctyme.com/gif/lup.gif" border=0 alt=Prev></a>
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<a href="rb-3138.htm" tppabs="http://www.ctyme.com/intr/rb-3138.htm">
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<img src="ldown.gif" tppabs="http://graphics.ctyme.com/gif/ldown.gif" border=0 alt=Next></a>
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<a href="javascript:if(confirm('http://www.ctyme.com/rbrown.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/rbrown.htm'" tppabs="http://www.ctyme.com/rbrown.htm">
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<img src="lhome.gif" tppabs="http://graphics.ctyme.com/gif/lhome.gif" border=0 alt=Ralf Brown Page></a>
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<td><a href="int.htm" tppabs="http://www.ctyme.com/intr/int.htm">Interrups</a></td>
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<td><a href="cat.htm" tppabs="http://www.ctyme.com/intr/cat.htm">Categories</a></td>
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<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
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</td></table><p>
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<p><table border=1 bgcolor="#ffff99"><tr><td>
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<center>
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<FORM ACTION="https://secure.paypal.com/cgi-bin/webscr" tppabs="https://secure.paypal.com/cgi-bin/webscr" METHOD="POST" traget="_blank">
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<INPUT TYPE="hidden" NAME="cmd" VALUE="_xclick">
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<INPUT TYPE="hidden" NAME="business" VALUE="marc@perkel.com">
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<INPUT TYPE="hidden" NAME="return" VALUE="http://www.perkel.com">
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<INPUT TYPE="hidden" NAME="item_name" VALUE="Donation To Support this Site">
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<INPUT TYPE="hidden" NAME="no_intl" VALUE="1">
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<INPUT TYPE="image" SRC="x-click-but7.gif" tppabs="http://images.paypal.com/images/x-click-but7.gif" vspace=9
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NAME="submit" ALT="Make payments with PayPal - it's fast, free and secure!">
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</center>
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<FORM ACTION="http://service.bfast.com/bfast/click" target="_blank">
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<INPUT TYPE="hidden" NAME="siteid" VALUE="30472466" >
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<INPUT TYPE="hidden" NAME="bfpage" VALUE="horizontal">
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<INPUT TYPE="hidden" NAME="bfmid" VALUE="27253343" >
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<INPUT TYPE="hidden" NAME="num" VALUE="30">
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<table bgcolor=white border=3><tr><td>
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