annotate src/hftctl.c @ 2367:ecf1ebac70d8

[xemacs-hg @ 2004-11-04 23:05:23 by ben] commit mega-patch configure.in: Turn off -Winline and -Wchar-subscripts. Use the right set of cflags when compiling modules. Rewrite ldap configuration to separate the inclusion of lber (needed in recent Cygwin) from the basic checks for the needed libraries. add a function for MAKE_JUNK_C; initially code was added to generate xemacs.def using this, but it will need to be rewritten. add an rm -f for junk.c to avoid weird Cygwin bug with cp -f onto an existing file. Sort list of auto-detected functions and eliminate unused checks for stpcpy, setlocale and getwd. Add autodetection of Cygwin scanf problems BETA: Rewrite section on configure to indicate what flags are important and what not. digest-doc.c, make-dump-id.c, profile.c, sorted-doc.c: Add proper decls for main(). make-msgfile.c: Document that this is old junk. Move proposal to text.c. make-msgfile.lex: Move proposal to text.c. make-mswin-unicode.pl: Convert error-generating code so that the entire message will be seen as a single unrecognized token. mule/mule-ccl.el: Update docs. lispref/mule.texi: Update CCL docs. ldap/eldap.c: Mule-ize. Use EXTERNAL_LIST_LOOP_2 instead of deleted EXTERNAL_LIST_LOOP. * XEmacs 21.5.18 "chestnut" is released. --------------------------------------------------------------- MULE-RELATED WORK: --------------------------------------------------------------- --------------------------- byte-char conversion --------------------------- buffer.c, buffer.h, insdel.c, text.c: Port FSF algorithm for byte-char conversion, replacing broken previous version. Track the char position of the gap. Add functions to do char-byte conversion downwards as well as upwards. Move comments about algorithm workings to internals manual. --------------------------- work on types --------------------------- alloc.c, console-x-impl.h, dump-data.c, dump-data.h, dumper.c, dialog-msw.c, dired-msw.c, doc.c, editfns.c, esd.c, event-gtk.h, event-msw.c, events.c, file-coding.c, file-coding.h, fns.c, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-shared.c, glyphs-x.c, glyphs.c, glyphs.h, gui.c, hpplay.c, imgproc.c, intl-win32.c, lrecord.h, lstream.c, keymap.c, lisp.h, libsst.c, linuxplay.c, miscplay.c, miscplay.h, mule-coding.c, nas.c, nt.c, ntheap.c, ntplay.c, objects-msw.c, objects-tty.c, objects-x.c, print.c, process-nt.c, process.c, redisplay.h, select-common.h, select-gtk.c, select-x.c, sgiplay.c, sound.c, sound.h, sunplay.c, sysfile.h, sysdep.c, syswindows.h, text.c, unexnt.c, win32.c, xgccache.c: Further work on types. This creates a full set of types for all the basic semantics of `char' that I have so far identified, so that its semantics can always be identified for the purposes of proper Mule-safe code, and the raw use of `char' always avoided. (1) More type renaming, for consistency of naming. Char_ASCII -> Ascbyte UChar_ASCII -> UAscbyte Char_Binary -> CBinbyte UChar_Binary -> Binbyte SChar_Binary -> SBinbyte (2) Introduce Rawbyte, CRawbyte, Boolbyte, Chbyte, UChbyte, and Bitbyte and use them. (3) New types Itext, Wexttext and Textcount for separating out the concepts of bytes and textual units (different under UTF-16 and UTF-32, which are potential internal encodings). (4) qxestr*_c -> qxestr*_ascii. lisp.h: New; goes with other qxe() functions. #### Maybe goes in a different section. lisp.h: Group generic int-type defs together with EMACS_INT defs. lisp.h: * lisp.h (WEXTTEXT_IS_WIDE) New defns. lisp.h: New type to replace places where int occurs as a boolean. It's signed because occasionally people may want to use -1 as an error value, and because unsigned ints are viral -- see comments in the internals manual against using them. dynarr.c: int -> Bytecount. --------------------------- Mule-izing --------------------------- device-x.c: Partially Mule-ize. dumper.c, dumper.h: Mule-ize. Use Rawbyte. Use stderr_out not printf. Use wext_*(). sysdep.c, syswindows.h, text.c: New Wexttext API for manipulation of external text that may be Unicode (e.g. startup code under Windows). emacs.c: Mule-ize. Properly deal with argv in external encoding. Use wext_*() and Wexttext. Use Rawbyte. #if 0 some old junk on SCO that is unlikely to be correct. Rewrite allocation code in run-temacs. emacs.c, symsinit.h, win32.c: Rename win32 init function and call it even earlier, to initialize mswindows_9x_p even earlier, for use in startup code (XEUNICODE_P). process.c: Use _wenviron not environ under Windows, to get Unicode environment variables. event-Xt.c: Mule-ize drag-n-drop related stuff. dragdrop.c, dragdrop.h, frame-x.c: Mule-ize. text.h: Add some more stand-in defines for particular kinds of conversion; use in Mule-ization work in frame-x.c etc. --------------------------- Freshening --------------------------- intl-auto-encap-win32.c, intl-auto-encap-win32.h: Regenerate. --------------------------- Unicode-work --------------------------- intl-win32.c, syswindows.h: Factor out common options to MultiByteToWideChar and WideCharToMultiByte. Add convert_unicode_to_multibyte_malloc() and convert_unicode_to_multibyte_dynarr() and use. Add stuff for alloca() conversion of multibyte/unicode. alloc.c: Use dfc_external_data_len() in case of unicode coding system. alloc.c, mule-charset.c: Don't zero out and reinit charset Unicode tables. This fucks up dump-time loading. Anyway, either we load them at dump time or run time, never both. unicode.c: Dump the blank tables as well. --------------------------------------------------------------- DOCUMENTATION, MOSTLY MULE-RELATED: --------------------------------------------------------------- EmacsFrame.c, emodules.c, event-Xt.c, fileio.c, input-method-xlib.c, mule-wnnfns.c, redisplay-gtk.c, redisplay-tty.c, redisplay-x.c, regex.c, sysdep.c: Add comment about Mule work needed. text.h: Add more documentation describing why DFC routines were not written to return their value. Add some other DFC documentation. console-msw.c, console-msw.h: Add pointer to docs in win32.c. emacs.c: Add comments on sources of doc info. text.c, charset.h, unicode.c, intl-win32.c, intl-encap-win32.c, text.h, file-coding.c, mule-coding.c: Collect background comments and related to text matters and internationalization, and proposals for work to be done, in text.c or Internals manual, stuff related to specific textual API's in text.h, and stuff related to internal implementation of Unicode conversion in unicode.c. Put lots of pointers to the comments to make them easier to find. s/mingw32.h, s/win32-common.h, s/win32-native.h, s/windowsnt.h, win32.c: Add bunches of new documentation on the different kinds of builds and environments under Windows and how they work. Collect this info in win32.c. Add pointers to these docs in the relevant s/* files. emacs.c: Document places with long comments. Remove comment about exiting, move to internals manual, put in pointer. event-stream.c: Move docs about event queues and focus to internals manual, put in pointer. events.h: Move docs about event stream callbacks to internals manual, put in pointer. profile.c, redisplay.c, signal.c: Move documentation to the Internals manual. process-nt.c: Add pointer to comment in win32-native.el. lisp.h: Add comments about some comment conventions. lisp.h: Add comment about the second argument. device-msw.c, redisplay-msw.c: @@#### comments are out-of-date. --------------------------------------------------------------- PDUMP WORK (MOTIVATED BY UNICODE CHANGES) --------------------------------------------------------------- alloc.c, buffer.c, bytecode.c, console-impl.h, console.c, device.c, dumper.c, lrecord.h, elhash.c, emodules.h, events.c, extents.c, frame.c, glyphs.c, glyphs.h, mule-charset.c, mule-coding.c, objects.c, profile.c, rangetab.c, redisplay.c, specifier.c, specifier.h, window.c, lstream.c, file-coding.h, file-coding.c: PDUMP: Properly implement dump_add_root_block(), which never worked before, and is necessary for dumping Unicode tables. Pdump name changes for accuracy: XD_STRUCT_PTR -> XD_BLOCK_PTR. XD_STRUCT_ARRAY -> XD_BLOCK_ARRAY. XD_C_STRING -> XD_ASCII_STRING. *_structure_* -> *_block_*. lrecord.h: some comments added about dump_add_root_block() vs dump_add_root_block_ptr(). extents.c: remove incorrect comment about pdump problems with gap array. --------------------------------------------------------------- ALLOCATION --------------------------------------------------------------- abbrev.c, alloc.c, bytecode.c, casefiddle.c, device-msw.c, device-x.c, dired-msw.c, doc.c, doprnt.c, dragdrop.c, editfns.c, emodules.c, file-coding.c, fileio.c, filelock.c, fns.c, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-x.c, gui-msw.c, gui-x.c, imgproc.c, intl-win32.c, lread.c, menubar-gtk.c, menubar.c, nt.c, objects-msw.c, objects-x.c, print.c, process-nt.c, process-unix.c, process.c, realpath.c, redisplay.c, search.c, select-common.c, symbols.c, sysdep.c, syswindows.h, text.c, text.h, ui-byhand.c: New macros {alloca,xnew}_{itext,{i,ext,raw,bin,asc}bytes} for more convenient allocation of these commonly requested items. Modify functions to use alloca_ibytes, alloca_array, alloca_extbytes, xnew_ibytes, etc. also XREALLOC_ARRAY, xnew. alloc.c: Rewrite the allocation functions to factor out repeated code. Add assertions for freeing dumped data. lisp.h: Moved down and consolidated with other allocation stuff. lisp.h, dynarr.c: New functions for allocation that's very efficient when mostly in LIFO order. lisp.h, text.c, text.h: Factor out some stuff for general use by alloca()-conversion funs. text.h, lisp.h: Fill out convenience routines for allocating various kinds of bytes and put them in lisp.h. Use them in place of xmalloc(), ALLOCA(). text.h: Fill out the convenience functions so the _MALLOC() kinds match the alloca() kinds. --------------------------------------------------------------- ERROR-CHECKING --------------------------------------------------------------- text.h: Create ASSERT_ASCTEXT_ASCII() and ASSERT_ASCTEXT_ASCII_LEN() from similar Eistring checkers and change the Eistring checkers to use them instead. --------------------------------------------------------------- MACROS IN LISP.H --------------------------------------------------------------- lisp.h: Redo GCPRO declarations. Create a "base" set of functions that can be used to generate any kind of gcpro sets -- regular, ngcpro, nngcpro, private ones used in GC_EXTERNAL_LIST_LOOP_2. buffer.c, callint.c, chartab.c, console-msw.c, device-x.c, dialog-msw.c, dired.c, extents.c, ui-gtk.c, rangetab.c, nt.c, mule-coding.c, minibuf.c, menubar-msw.c, menubar.c, menubar-gtk.c, lread.c, lisp.h, gutter.c, glyphs.c, glyphs-widget.c, fns.c, fileio.c, file-coding.c, specifier.c: Eliminate EXTERNAL_LIST_LOOP, which does not check for circularities. Use EXTERNAL_LIST_LOOP_2 instead or EXTERNAL_LIST_LOOP_3 or EXTERNAL_PROPERTY_LIST_LOOP_3 or GC_EXTERNAL_LIST_LOOP_2 (new macro). Removed/redid comments on EXTERNAL_LIST_LOOP. --------------------------------------------------------------- SPACING FIXES --------------------------------------------------------------- callint.c, hftctl.c, number-gmp.c, process-unix.c: Spacing fixes. --------------------------------------------------------------- FIX FOR GEOMETRY PROBLEM IN FIRST FRAME --------------------------------------------------------------- unicode.c: Add workaround for newlib bug in sscanf() [should be fixed by release 1.5.12 of Cygwin]. toolbar.c: bug fix for problem of initial frame being 77 chars wide on Windows. will be overridden by my other ws. --------------------------------------------------------------- FIX FOR LEAKING PROCESS HANDLES: --------------------------------------------------------------- process-nt.c: Fixes for leaking handles. Inspired by work done by Adrian Aichner <adrian@xemacs.org>. --------------------------------------------------------------- FIX FOR CYGWIN BUG (Unicode-related): --------------------------------------------------------------- unicode.c: Add workaround for newlib bug in sscanf() [should be fixed by release 1.5.12 of Cygwin]. --------------------------------------------------------------- WARNING FIXES: --------------------------------------------------------------- console-stream.c: `reinit' is unused. compiler.h, event-msw.c, frame-msw.c, intl-encap-win32.c, text.h: Add stuff to deal with ANSI-aliasing warnings I got. regex.c: Gather includes together to avoid warning. --------------------------------------------------------------- CHANGES TO INITIALIZATION ROUTINES: --------------------------------------------------------------- buffer.c, emacs.c, console.c, debug.c, device-x.c, device.c, dragdrop.c, emodules.c, eval.c, event-Xt.c, event-gtk.c, event-msw.c, event-stream.c, event-tty.c, events.c, extents.c, faces.c, file-coding.c, fileio.c, font-lock.c, frame-msw.c, glyphs-widget.c, glyphs.c, gui-x.c, insdel.c, lread.c, lstream.c, menubar-gtk.c, menubar-x.c, minibuf.c, mule-wnnfns.c, objects-msw.c, objects.c, print.c, scrollbar-x.c, search.c, select-x.c, text.c, undo.c, unicode.c, window.c, symsinit.h: Call reinit_*() functions directly from emacs.c, for clarity. Factor out some redundant init code. Move disallowed stuff that had crept into vars_of_glyphs() into complex_vars_of_glyphs(). Call init_eval_semi_early() from eval.c not in the middle of vars_of_() in emacs.c since there should be no order dependency in the latter calls. --------------------------------------------------------------- ARMAGEDDON: --------------------------------------------------------------- alloc.c, emacs.c, lisp.h, print.c: Rename inhibit_non_essential_printing_operations to inhibit_non_essential_conversion_operations. text.c: Assert on !inhibit_non_essential_conversion_operations. console-msw.c, print.c: Don't do conversion in SetConsoleTitle or FindWindow to avoid problems during armageddon. Put #errors for NON_ASCII_INTERNAL_FORMAT in places where problems would arise. --------------------------------------------------------------- CHANGES TO THE BUILD PROCEDURE: --------------------------------------------------------------- config.h.in, s/cxux.h, s/usg5-4-2.h, m/powerpc.h: Add comment about correct ordering of this file. Rearrange everything to follow this -- put all #undefs together and before the s&m files. Add undefs for HAVE_ALLOCA, C_ALLOCA, BROKEN_ALLOCA_IN_FUNCTION_CALLS, STACK_DIRECTION. Remove unused HAVE_STPCPY, HAVE_GETWD, HAVE_SETLOCALE. m/gec63.h: Deleted; totally broken, not used at all, not in FSF. m/7300.h, m/acorn.h, m/alliant-2800.h, m/alliant.h, m/altos.h, m/amdahl.h, m/apollo.h, m/att3b.h, m/aviion.h, m/celerity.h, m/clipper.h, m/cnvrgnt.h, m/convex.h, m/cydra5.h, m/delta.h, m/delta88k.h, m/dpx2.h, m/elxsi.h, m/ews4800r.h, m/gould.h, m/hp300bsd.h, m/hp800.h, m/hp9000s300.h, m/i860.h, m/ibmps2-aix.h, m/ibmrs6000.h, m/ibmrt-aix.h, m/ibmrt.h, m/intel386.h, m/iris4d.h, m/iris5d.h, m/iris6d.h, m/irist.h, m/isi-ov.h, m/luna88k.h, m/m68k.h, m/masscomp.h, m/mg1.h, m/mips-nec.h, m/mips-siemens.h, m/mips.h, m/news.h, m/nh3000.h, m/nh4000.h, m/ns32000.h, m/orion105.h, m/pfa50.h, m/plexus.h, m/pmax.h, m/powerpc.h, m/pyrmips.h, m/sequent-ptx.h, m/sequent.h, m/sgi-challenge.h, m/symmetry.h, m/tad68k.h, m/tahoe.h, m/targon31.h, m/tekxd88.h, m/template.h, m/tower32.h, m/tower32v3.h, m/ustation.h, m/vax.h, m/wicat.h, m/xps100.h: Delete C_ALLOCA, HAVE_ALLOCA, STACK_DIRECTION, BROKEN_ALLOCA_IN_FUNCTION_CALLS. All of this is auto-detected. When in doubt, I followed recent FSF sources, which also have these things deleted.
author ben
date Thu, 04 Nov 2004 23:08:28 +0000
parents a8d8f419b459
children
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1 /* IBM has disclaimed copyright on this module. */
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2
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3 /* Synched up with: FSF 19.30. */
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4
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5 /***************************************************************/
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6 /* */
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7 /* Function: hftctl */
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8 /* */
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9 /* Syntax: */
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10 /* #include <sys/ioctl.h> */
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11 /* #include <sys/hft.h> */
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12 /* */
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13 /* int hftctl(fildes, request, arg ) */
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14 /* int fildes, request; */
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15 /* char *arg; */
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16 /* */
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17 /* Description: */
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18 /* */
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19 /* Does the following: */
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20 /* 1. determines if fildes is pty */
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21 /* does normal ioctl it is not */
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22 /* 2. places fildes into raw mode */
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23 /* 3. converts ioctl arguments to data stream */
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24 /* 4. waits for 2 secs for acknowledgement before */
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25 /* timing out. */
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26 /* 5. places response in callers buffer ( just like */
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27 /* ioctl. */
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28 /* 6. returns fildes to its original mode */
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29 /* */
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30 /* User of this program should review steps 1,4, and 3. */
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31 /* hftctl makes no check on the request type. It must be */
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32 /* a HFT ioctl that is supported remotely. */
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33 /* This program will use the SIGALRM and alarm(2). Any */
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34 /* Previous alarms are lost. */
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35 /* */
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36 /* Users of this program are free to modify it any way */
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37 /* they want. */
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38 /* */
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39 /* Return Value: */
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40 /* */
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41 /* If ioctl fails, a value of -1 is returned and errno */
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42 /* is set to indicate the error. */
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43 /* */
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44 /***************************************************************/
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45
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46 #include <config.h>
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b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
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47 #include "lisp.h"
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48 #include "sysfile.h"
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49
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50 #include <sys/signal.h>
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51 #include <errno.h>
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52
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53 #include <stdio.h>
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54 #include <fcntl.h>
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55 #include <setjmp.h>
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56 #include <sys/ioctl.h>
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57 #include <sys/devinfo.h>
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58 #include <termios.h>
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59 #include <termio.h>
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60 #include <sys/hft.h>
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61 #include <sys/uio.h>
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62 #include <sys/tty.h>
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63 /* #include <sys/pty.h> */
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64
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65 #define REMOTE 0x01
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66
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67 #undef ioctl
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68 static char SCCSid[] = "com/gnuemacs/src,3.1,9021-90/05/03-5/3/90";
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69
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70 /*************** LOCAL DEFINES **********************************/
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71
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72 #define QDEV ((HFQPDEVCH<<8)|HFQPDEVCL)
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73 #define QLOC ((HFQLOCCH<<8)|HFQLOCCL)
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74 #define QPS ((HFQPRESCH<<8)|HFQPRESCL)
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75
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76 #ifndef TCGETS
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77 #define TCGETS TCGETA
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78 #endif
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79 #ifndef TCSETS
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80 #define TCSETS TCSETA
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81 #endif
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82
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83 /*************** EXTERNAL / GLOBAL DATA AREA ********************/
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84
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85 static int hfqry();
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86 static int hfskbd();
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87
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88 extern int errno;
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89 static JMP_BUF hftenv;
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90 static int is_ack_vtd;
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91 static SIGTYPE (*sav_alrm) ();
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92 static struct hfctlreq req =
3ecd8885ac67 Import from CVS: tag r21-2-22
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93 { 0x1b,'[','x',0,0,0,21,HFCTLREQCH,HFCTLREQCL};
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94 static struct hfctlack ACK =
3ecd8885ac67 Import from CVS: tag r21-2-22
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95 { 0x1b,'[','x',0,0,0,21,HFCTLACKCH,HFCTLACKCL};
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96
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97 /* FUNC signal(); */
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98
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99 /*************** LOCAL MACROS ***********************************/
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100
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101 #define HFTYPE(p) ((p->hf_typehi<<8)|(p->hf_typelo))
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102
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103 #define BYTE4(p) ((p)[0]<<24 | (p)[1]<<16 | (p)[2]<<8 | (p)[3])
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104
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105 /* read a buffer */
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106 #define RD_BUF(f,p,l) \
3ecd8885ac67 Import from CVS: tag r21-2-22
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107 while ((l)) \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
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parents: 428
diff changeset
108 if ((j = read ((f),(p),(l))) < 0) \
428
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109 if (errno != EINTR) return (-1); \
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110 else continue; \
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111 else { (l) -= j; (p) += j; }
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112
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113 /*************** function prototypes ***************************/
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114 #ifdef __STDC__
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115 static GT_ACK (int fd, int req, char *buf);
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116 static WR_REQ (int fd, int request, int cmdlen, char *cmd, int resplen);
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117 static void hft_alrm(int sig);
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118 #else
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119 static GT_ACK ();
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120 static WR_REQ ();
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121 static void hft_alrm ();
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122 #endif
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123
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124 /*************** HFTCTL FUNCTION *******************************/
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125
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126 hftctl (fd, request, arg)
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127 int fd;
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128 int request;
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129 union {
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130 struct hfintro *intro;
3ecd8885ac67 Import from CVS: tag r21-2-22
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131 struct hfquery *query;
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132 char *c;
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133 } arg;
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134 {
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135
3ecd8885ac67 Import from CVS: tag r21-2-22
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136 int i;
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137 int fd_flag; /* fcntl flags */
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138 union {
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139 struct hfintro *cmd; /* p.cmd - intro des. */
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140 struct hfqphdevc *ph; /* p.ph - physical dev.*/
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141 char *c; /* p.c - char ptr */
3ecd8885ac67 Import from CVS: tag r21-2-22
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142 } p; /* general pointer */
3ecd8885ac67 Import from CVS: tag r21-2-22
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143 int pty_new; /* pty modes */
3ecd8885ac67 Import from CVS: tag r21-2-22
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144 int pty_old;
3ecd8885ac67 Import from CVS: tag r21-2-22
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145 int retcode;
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146 struct termios term_new; /* terminal attributes */
3ecd8885ac67 Import from CVS: tag r21-2-22
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147 struct termios term_old;
3ecd8885ac67 Import from CVS: tag r21-2-22
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148 struct devinfo devInfo; /* defined in sys/devinfo.h */
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149
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150
3ecd8885ac67 Import from CVS: tag r21-2-22
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151 if (ioctl (fd, IOCINFO, &devInfo) == -1) return(-1);
3ecd8885ac67 Import from CVS: tag r21-2-22
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152
3ecd8885ac67 Import from CVS: tag r21-2-22
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153 if (devInfo.devtype != DD_PSEU) /* is it a pty? */
3ecd8885ac67 Import from CVS: tag r21-2-22
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154 return (ioctl(fd, request, arg)); /* no, do IOCTL */
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155
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156 /******* START PTY **************/
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157 /** Pty found, possible HFT */
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158 /** set new file des as raw */
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159 /** as you can. */
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160 /********************************/
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161
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162 /* Get current state of file */
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163 /* descriptor & save */
3ecd8885ac67 Import from CVS: tag r21-2-22
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164 if ((fd_flag = fcntl (fd, F_GETFL, 0)) == -1) return (-1);
3ecd8885ac67 Import from CVS: tag r21-2-22
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165 if (ioctl (fd, TCGETS, &term_old) == -1) return (-1);
3ecd8885ac67 Import from CVS: tag r21-2-22
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166 /* set terminal attr to raw */
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167 /* and to delay on read */
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168 pty_new = pty_old | REMOTE;
3ecd8885ac67 Import from CVS: tag r21-2-22
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169 memcpy (&term_new, &term_old, sizeof (term_new));
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170 term_new.c_iflag = 0;
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171 term_new.c_oflag = 0;
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172 term_new.c_lflag = 0;
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173 /* term_new.c_line = 0; */
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174 for (i = 1; i <= 5; i++)
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175 term_new.c_cc[i] = 0;
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176 term_new.c_cc[0] = -1;
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177 ioctl (fd, TCSETS, &term_new);
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178 if (fcntl (fd, F_SETFL, fd_flag & ~O_NDELAY) == -1)
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179 return(-1);
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180 /* call spacific function */
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181 if (request == HFSKBD)
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182 retcode = hfskbd (fd, request, arg.c);
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183 else /* assume HFQUERY */
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184 retcode = hfqry (fd, request, arg.c);
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185
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186 fcntl (fd, F_SETFL, fd_flag); /* reset terminal to original */
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187 ioctl (fd, TCSETS, &term_old);
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188
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189
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190 return (retcode); /* return error */
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191 }
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192
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193 /*************** HFSKBD FUNCTION ******************************/
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194 static int
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195 hfskbd (fd, request, arg)
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196 int fd;
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197 int request;
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198 struct hfbuf *arg;
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199 {
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200 WR_REQ(fd, request, arg->hf_buflen, arg->hf_bufp,0);
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201 return (GT_ACK(fd, request, arg->hf_bufp));
3ecd8885ac67 Import from CVS: tag r21-2-22
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202 }
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203
3ecd8885ac67 Import from CVS: tag r21-2-22
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204 /*************** HFQUERY FUNCTION ******************************/
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205 static int
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206 hfqry (fd, request, arg)
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207 int fd;
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208 int request;
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209 struct hfquery *arg;
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210 {
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211 WR_REQ(fd, request, arg->hf_cmdlen, arg->hf_cmd, arg->hf_resplen);
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212 return (GT_ACK(fd, request, arg->hf_resp));
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213 }
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214
3ecd8885ac67 Import from CVS: tag r21-2-22
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215
3ecd8885ac67 Import from CVS: tag r21-2-22
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216 /*************** GT_ACK FUNCTION ******************************/
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217 static int
3ecd8885ac67 Import from CVS: tag r21-2-22
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218 GT_ACK (fd, req, buf)
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219 int fd;
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220 int req;
3ecd8885ac67 Import from CVS: tag r21-2-22
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221 char *buf;
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222 {
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223 struct hfctlack ack;
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224 int i = sizeof (ack);
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225 int j = 0;
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226 union {
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227 char *c;
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228 struct hfctlack *ack;
3ecd8885ac67 Import from CVS: tag r21-2-22
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229 } p;
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230
3ecd8885ac67 Import from CVS: tag r21-2-22
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231 is_ack_vtd = 0; /* flag no ACT VTD yet */
3ecd8885ac67 Import from CVS: tag r21-2-22
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232
3ecd8885ac67 Import from CVS: tag r21-2-22
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233 if (SETJMP (hftenv)) /* set environment in case */
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234 { /* of time out */
3ecd8885ac67 Import from CVS: tag r21-2-22
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235 errno = ENODEV; /* if time out, set errno */
3ecd8885ac67 Import from CVS: tag r21-2-22
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236 return (-1); /* flag error */
3ecd8885ac67 Import from CVS: tag r21-2-22
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237 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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238
3ecd8885ac67 Import from CVS: tag r21-2-22
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239 alarm(3); /* time out in 3 secs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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240 sav_alrm = signal (SIGALRM, hft_alrm); /* prepare to catch time out */
3ecd8885ac67 Import from CVS: tag r21-2-22
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241
3ecd8885ac67 Import from CVS: tag r21-2-22
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242 p.ack = &ack;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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diff changeset
243 while (! is_ack_vtd) /* do until valid ACK VTD */
3ecd8885ac67 Import from CVS: tag r21-2-22
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244 {
3ecd8885ac67 Import from CVS: tag r21-2-22
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245 RD_BUF(fd, p.c, i); /* read until a ACK VTD is fill*/
3ecd8885ac67 Import from CVS: tag r21-2-22
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246
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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247 if (! memcmp (&ack, &ACK, sizeof (HFINTROSZ)) /* the ACK intro & */
3ecd8885ac67 Import from CVS: tag r21-2-22
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248 && (ack.hf_request == req)) /* is it the response we want ?*/
3ecd8885ac67 Import from CVS: tag r21-2-22
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249 { /* yes, ACK VTD found */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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250 is_ack_vtd = 1; /* quickly, flag it */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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251 break; /* get the %$%#@ out of here */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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252 }
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253
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254 p.ack = &ack; /* no, then skip 1st */
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255 ++p.c; /* char and start over */
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256 i = sizeof (ack) - 1; /* one less ESC to cry over */
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257
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258 while ((*p.c != 0x1b) && i) /* scan for next ESC */
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259 { ++p.c; --i; } /* if any */
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260
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261 (i ? memcpy (&ack, p.c, i) : 0); /* if any left over, then move */
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262 p.ack = &ack; /* ESC to front of ack struct */
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263 p.c += i; /* skip over what's been read */
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264 i = sizeof (ack) - i; /* set what's left to be read */
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265 } /***** TRY AGAIN */
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266
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267 alarm(0); /* ACK VTD received, reset alrm*/
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268 signal (SIGALRM, sav_alrm); /* reset signal */
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269
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270 if (i = ack.hf_arg_len) /* any data following ? */
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271 { /* yes, */
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272 RD_BUF(fd,buf,i); /* read until it is received */
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273 }
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274
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275 if (errno = ack.hf_retcode) /* set errno based on returned */
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276 return (-1); /* code, if 0, then no error */
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277 else
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278 return (0); /* if set, then error returned */
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279 }
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280
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281 /*************** HFT_ALRM FUNCTION ******************************/
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282 static void
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283 hft_alrm (sig) /* Function hft_alrm - handle */
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284 int sig; /* alarm signal */
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285 {
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286 signal (SIGALRM, sav_alrm); /* reset to previous */
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287
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288 if (is_ack_vtd) /* has ack vtd arrived ? */
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289 return; /* yes, then continue */
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290 else /* no, then return with error */
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291 LONGJMP (hftenv, -1);
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292
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293 }
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294
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295 /*********************************************************************/
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296 /*** ***/
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297 /*** NOTE: Both the HFCTLREQ and the arg structure should be ***/
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cvs
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298 /*** sent in one io write operation. If terminal ***/
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cvs
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299 /*** emulators are in NODELAY mode then multiple writes ***/
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cvs
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300 /*** may cause bogus information to be read by the emulator ***/
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301 /*** depending on the timing. ***/
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302 /*** ***/
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303 /*********************************************************************/
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304
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305 static int
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306 WR_REQ (fd, request, cmdlen, cmd, resplen)
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307 int fd;
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308 int request;
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309 int cmdlen;
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310 char *cmd;
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311 int resplen;
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312 {
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313 struct {
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314 char *c;
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315 struct hfctlreq *req;
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316 } p;
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317 int size;
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318
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319 req.hf_request = request;
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320 req.hf_arg_len = cmdlen;
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321 req.hf_rsp_len = resplen;
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322
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323 if (cmdlen) /* if arg structure to pass */
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324 {
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325 size = sizeof (struct hfctlreq) + cmdlen;
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ecf1ebac70d8 [xemacs-hg @ 2004-11-04 23:05:23 by ben]
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326 if ((p.c = xmalloc (size)) == NULL) /* malloc one area */
428
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327 return (-1);
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328
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329 memcpy (p.c, &req, sizeof (req)); /* copy CTL REQ struct */
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330 memcpy (p.c + sizeof (req), cmd, cmdlen); /* copy arg struct */
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331 }
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332 else
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333 {
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334 p.req = &req; /* otherwise use only CTL REQ */
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335 size = sizeof (req);
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336 }
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337
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338 /* write request to terminal */
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339 if (write(fd,p.c,size) == -1) return (-1);
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340 if (p.req != &req) /* free if allocated */
1726
a8d8f419b459 [xemacs-hg @ 2003-09-30 15:26:34 by james]
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341 xfree (p.c, char *);
428
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342 return (0);
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343 }