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📄 ioctl.2

📁 操作系统设计与实现源码
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%!PS-Adobe-1.0%%Creator: devps (Pipeline Associates, Inc.)%%CreationDate: Fri Sep 13 13:05:44 1996%%Pages: (atend)%%DocumentFonts: (atend)/devps 180 dict def devps begin/res 10.000000 def/y_offset 843 def/X{exch}bind def/mm {transform round X round X itransform} bind def/r{rmoveto}bind def/m{moveto}bind def/l{lineto}bind def/rl{rlineto}bind def/st{stroke}bind def/gs{gsave}bind def/gr{grestore}bind def/cp{currentpoint}bind def/np{newpath}bind def/ct{curveto}bind defsystemdict /setpacking known { /savepacking currentpacking def true setpacking } if/m0{0 0 moveto}bind def/xc{//res div}bind def/yc{//res neg div //y_offset add}bind def/lc{yc X xc X l st}bind def/mc{yc X xc X m}bind def/el{gs /a X def a div 1 X scale cp np a xc 2 div 0 360 arc st gr}bind def/ar{cp 7 2 roll np xc 5 1 roll atan 3 1 roll atan X arc st}bind def/sp{yc X xc X 6 2 roll yc X xc X 6 2 roll yc X xc X 6 2 roll ct}bind def/V{//res neg div //y_offset addcurrentpoint pop Xm}bind def/H{//res div0 transform X round X itransform popcurrentpoint X popmoveto}bind def/h{//res div 0 r}bind def/v{//res neg div 0 X r}bind def/S{X H show}bind def/A{H //res div 1 index stringwidth pop sub 1 index length div 0 3 2 roll ashow}bind def/psize 10 def/height 0 def/cheight { height 0 ne { height } { psize } ifelse } bind def/slant 0 def/FF{findfont X dup 30 div 0 mm pop setlinewidth /psize X def    [psize 0 cheight slant sin slant cos div mul cheight 0 0]    makefont setfont}bind def/shade{gs /dy X def /dx X def np m 0 /dy rl /dx 0 rl 0 /dy neg rl /dx neg 0 rl closepath .9 setgray fillgr}bind def1 setlinecap/resolution res 72 mul def/startFig {	/SavedState save def	userdict maxlength dict begin	currentpoint transform	DocumentInitState setmiterlimit setgray setdash setlinejoin setlinecap		setlinewidth setmatrix	itransform moveto	/ury exch def	/urx exch def	/lly exch def	/llx exch def	/y exch 72 mul resolution div def	/x exch 72 mul resolution div def		currentpoint /cy exch def /cx exch def	/sx x urx llx sub div def	/sy y ury lly sub div def	sx sy scale	cx sx div llx sub	cy sy div ury sub translate		/DefFigCTM matrix currentmatrix def	/initmatrix {		DefFigCTM setmatrix	} def	/defaultmatrix {		DefFigCTM exch copy	} def	/initgraphics {		DocumentInitState setmiterlimit setgray setdash 			setlinejoin setlinecap setlinewidth setmatrix		DefFigCTM setmatrix	} def	/showpage {		initgraphics	} def}bind  def/clipFig {	currentpoint 6 2 roll	newpath 4 copy	4 2 roll moveto	6 -1 roll exch lineto	exch lineto	exch lineto	closepath clip	newpath	moveto}bind  def/doclip { llx lly urx ury clipFig } def/endFig {	end SavedState restore}bind  def/globalstart {	fontnum psize slant height resolution currentpoint 	pagesave restore gsave }bind  def/globalend {	grestore moveto	/resolution exch def /height exch def	/slant exch def /psize exch def /fontnum exch def	F	/pagesave save def}bind  def/fontnum 1 def systemdict /setpacking known { savepacking setpacking} ifend/BP{save mark devps begin m0/DocumentInitState [ matrix currentmatrix currentlinewidth currentlinecapcurrentlinejoin currentdash currentgray currentmiterlimit ] cvx def}bind def/EP{end cleartomark restore showpage}def/Encoding-1 256 array def0 1 255 {Encoding-1 exch /.notdef put} forEncoding-1 8#301 StandardEncoding 8#101 26 getinterval putinterval %A-BEncoding-1 8#341 StandardEncoding 8#141 26 getinterval putinterval %a-bEncoding-1 8#241 StandardEncoding 8#301 16 getinterval putinterval %accentsEncoding-1 8#373 StandardEncoding 8#365 1 getinterval putinterval %dotlessiEncoding-1dup 8#41 /copyright putdup 8#42 /registered putdup 8#43 /trademark putdup 8#44 /logicalnot putdup 8#45 /Eth putdup 8#46 /eth putdup 8#47 /Thorn putdup 8#50 /thorn putdup 8#51 /brokenbar putdup 8#52 /degree putdup 8#53 /divide putdup 8#54 /multiply putdup 8#55 /minus putdup 8#56 /onehalf putdup 8#57 /onequarter putdup 8#60 /threequarters putdup 8#101 /Aacute putdup 8#102 /Acircumflex putdup 8#103 /Adieresis putdup 8#104 /Agrave putdup 8#105 /Aring putdup 8#106 /Atilde putdup 8#107 /Ccedilla putdup 8#110 /Eacute putdup 8#111 /Ecircumflex putdup 8#112 /Edieresis putdup 8#113 /Egrave putdup 8#114 /Iacute putdup 8#115 /Icircumflex putdup 8#116 /Idieresis putdup 8#117 /Igrave putdup 8#120 /Ntilde putdup 8#121 /Oacute putdup 8#122 /Ocircumflex putdup 8#123 /Odieresis putdup 8#124 /Ograve putdup 8#125 /Otilde putdup 8#126 /Scaron putdup 8#127 /Uacute putdup 8#130 /Ucircumflex putdup 8#131 /Udieresis putdup 8#132 /Ugrave putdup 8#133 /Ydieresis putdup 8#134 /Zcaron putdup 8#135 /aacute putdup 8#136 /acircumflex putdup 8#137 /adieresis putdup 8#140 /agrave putdup 8#141 /aring putdup 8#142 /atilde putdup 8#143 /ccedilla putdup 8#144 /eacute putdup 8#145 /ecircumflex putdup 8#146 /edieresis putdup 8#147 /egrave putdup 8#150 /iacute putdup 8#151 /icircumflex putdup 8#152 /idieresis putdup 8#153 /igrave putdup 8#154 /ntilde putdup 8#155 /oacute putdup 8#156 /ocircumflex putdup 8#157 /odieresis putdup 8#160 /ograve putdup 8#161 /otilde putdup 8#162 /scaron putdup 8#163 /uacute putdup 8#164 /ucircumflex putdup 8#165 /udieresis putdup 8#166 /ugrave putdup 8#167 /ydieresis putdup 8#170 /zcaron putpop/Enc-dict 30 dict defEnc-dict /tmpstr1 50 string putEnc-dict /tmpstr2 50 string putEnc-dict /tmpstr3 50 string dup (Encoding-) exch cvs pop put/AEnc-def { % arguments: the original font's name, encoding nrEnc-dict begintmpstr2 cvs /Enc-no exch def % Remember the number in a stringdup /OrigName exch def % remember the namefindfont dup maxlength dict /newdict exch def % get dictionary for new font{ exch dup /FID ne   { exch newdict 3 1 roll put }   { pop pop } % Ignore FID   ifelse} forallnewdict begin/Encoding  tmpstr3 9 Enc-no putinterval tmpstr3 0 9 Enc-no length add getinterval  cvn load  def % Replace encodingcurrentdict /UniqueID known{ /UniqueID UniqueID Enc-no cvi 49999 mul add def } if % Derive New UniqueIDend % newdict/FNlength OrigName tmpstr1 cvs length def % convert name, remember lengthFNlength 1 add Enc-no length add stringdup 0 OrigName tmpstr1 cvs putintervaldup FNlength (-) putintervaldup FNlength 1 add Enc-no putintervaldup 0 tmpstr1 0 FNlength getinterval putinterval % Add old namecvn dup newdict /FontName 3 2 roll put newdict definefontend % Enc-dict} def/Times-Roman 1 AEnc-def pop/R-1{/Times-Roman-1 FF}def/R{/Times-Roman FF}def/B{/Times-Bold FF}def/I{/Times-Italic FF}def%%EndProlog%%Page: 1 1BP/slant 0 def/height 0 def480 V10 R720(IOCTL)S1026(\()S1068(2)S1126(\))S2696(Eighth)S(Edition)296 2989 A4821(IOCTL)S5127(\()S5169(2)S5227(\))S960 V9 R720(N)S722(NA)S790(AM)S858(ME)S940(E)S1080 V10 R1080(ioctl)S10 R-11284(-)S10 R1366(control)S1676(device)S1248 V9 R720(S)S722(SY)S774(YN)S842(NO)S910(OP)S978(PS)S1030(SI)S1082(IS)S1115(S)S1368 V10 B1080(#include)S1482(<sys/types.h>)S1488 V1080(#include)S1482(<sys/ioctl.h>)S1728 V1080(int)S1236(ioctl\(int)S10 I1611(d)S10 B1661(,)S1724(int)S10 I1880(request)S10 B2176(,)S2239(void)S2461(*)S10 I2511(argp)S10 B2700(\))S3780(\(Minix\))S1848 V1080(int)S1236(ioctl\(int)S10 I1611(d)S10 B1661(,)S1724(ioreq_t)S10 I2070(request)S10 B2366(,)S2429(void)S2651(*)S10 I2701(argp)S10 B2890(\))S3780(\(Minix-vmd\))S2016 V9 R720(D)S722(DE)S790(ES)S848(SC)S900(CR)S962(RI)S1024(IP)S1057(PT)S1109(TI)S1167(IO)S1200(ON)S1268(N)S2136 V10 B1080(Ioctl)S10 R1304(performs)S1696(a)S1769(variety)S2078(of)S2191(functions)S2594(on)S2723(open)S2947(descriptors.)S3468(In)S3581(particular,)S4022(many)S4274(operating)S4683(characteristics)S2256 V1080(of)S1190(character)S1587(special)S1893(\256les)S2087(\(e.g.)S2292(terminals\))S2727(may)S2926(be)S3047(controlled)S3481(with)S10 B3686(ioctl)S10 R3897(requests.)S4302(The)S4484(writeups)S4856(of)S4965(various)S2376 V1080(devices)S1407(in)S1510(section)S1820(4)S1895(discuss)S2210(how)S10 B2408(ioctl)S10 R2618(applies)S2928(to)S3031(them.)S2544 V1080(An)S1259(ioctl)S10 I1469(request)S10 R1797(has)S1963(encoded)S2330(in)S2440(it)S2528(whether)S2885(the)S3040(argument)S3452(is)S3551(an)S3678(in)S3788(parameter)S4224(or)S4340(out)S4500(parameter,)S4961(and)S5138(the)S2664 V1080(size)S1267(of)S1381(the)S1534(argument)S10 I1944(argp)S10 R2163(in)S2271(bytes.)S2563(Macros)S2895(and)S3070(de\256nes)S3385(used)S3599(in)S3707(specifying)S4156(an)S4281(ioctl)S10 I4490(request)S10 R4816(are)S4970(located)S2784 V1080(in)S1183(the)S1331(\256le)S10 I1485(<sys/ioctl.h>)S10 R2034(.)S2952 V9 R720(R)S722(RE)S784(ET)S842(TU)S900(UR)S968(RN)S1030(N)S1121(V)S1123(VA)S1191(AL)S1259(LU)S1317(UE)S1385(E)S3072 V10 R1080(If)S1173(an)S1293(error)S1515(has)S1674(occurred,)S2077(a)S2147(value)S2390(of)S10 R-12499(-)S10 R2556(1)S2631(is)S2723(returned)S3084(and)S10 B(errno)241 3254 A10 R3520(is)S3612(set)S3749(to)S3852(indicate)S4196(the)S4344(error.)S3240 V9 R720(E)S722(ER)S780(RR)S842(RO)S904(OR)S972(RS)S1034(S)S3360 V10 B1080(Ioctl)S10 R(will)157 1301 A1483(fail)S1643(if)S1730(one)S1900(or)S2009(more)S2241(of)S2350(the)S2498(following)S2914(are)S3063(true:)S3528 V1080([EBADF])S10 I1830(D)S10 R1928(is)S2020(not)S2173(a)S2243(valid)S2469(descriptor.)S3696 V1080([ENOTTY])S10 I1830(D)S10 R1928(is)S2020(not)S2173(associated)S2612(with)S2816(a)S2886(character)S3282(special)S3587(device.)S3864 V1080([ENOTTY])S1830(The)S2015(speci\256ed)S2401(request)S2720(does)S2932(not)S3088(apply)S3339(to)S3445(the)S3597(kind)S3804(of)S3917(object)S4192(that)S4372(the)S4524(descriptor)S10 I4956(d)S10 R5035(refer-)S3984 V1830(ences.)S4152 V([EINVAL])445 1080 A10 I1830(Request)S10 R2174(or)S10 I2283(argp)S10 R2497(is)S2589(not)S2742(valid.)S4320 V9 R720(S)S722(SE)S774(EE)S832(E)S913(A)S915(AL)S983(LS)S1041(SO)S1093(O)S4440 V10 B1080(execve)S10 R1360(\(2\),)S10 B1528(fcntl)S10 R1725(\(2\),)S10 B1893(mt)S10 R2011(\(4\),)S10 B2179(tty)S10 R2297(\(4\),)S10 B2465(intro)S10 R2678(\(4\).)S7903 V720(Page)S941(1)S2654(\()S2696(March)S2984(4,)S(1986)200 3084 A3292(\))S4455(September)S4911(13,)S(1996)200 5061 A8143 VEP%%Trailer%%DocumentFonts: Times-Roman Times-Bold Times-Italic%%Pages: 1

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