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📄 creat.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 13:05:37 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(CREAT)S1059(\()S1101(2)S1159(\))S2696(Eighth)S(Edition)296 2989 A4788(CREAT)S5127(\()S5169(2)S5227(\))S960 V9 R720(N)S722(NA)S790(AM)S858(ME)S940(E)S1080 V10 R1080(creat)S10 R-11302(-)S10 R1384(create)S1651(a)S1721(new)S1914(\256le)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(<fcntl.h>)S1728 V1080(int)S(creat\(const)477 1236 A1751(char)S1985(*)S10 I2035(name)S10 B2253(,)S2316(mode_t)S10 I2673(mode)S10 B2891(\))S1896 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)S2016 V10 B1080(This)S1295(interface)S1702(is)S1794(made)S2054(obsolete)S2426(by)S2557(open\(2\),)S2932(it)S3019(is)S3111(equivalent)S3584(to)S2184 V10 R1440(open\()S10 I1669(name)S10 R1887(,)S1937(O_WRONLY)S2528(|)S2573(O_CREAT)S3052(|)S3097(O_TRUNC,)S10 I3612(mode)S10 R3830(\))S2352 V10 B1080(Creat)S10 R1359(creates)S1672(a)S1750(new)S1951(\256le)S2113(or)S2230(prepares)S2605(to)S2716(rewrite)S3036(an)S3164(existing)S3515(\256le)S3677(called)S10 I3951(name)S10 R4177(,)S4235(given)S4491(as)S4608(the)S4764(address)S5099(of)S5216(a)S2472 V1080(null-terminated)S1739(string.)S2056(If)S2161(the)S2321(\256le)S2487(did)S2652(not)S2817(exist,)S3069(it)S3162(is)S3266(given)S3526(mode)S10 I3786(mode)S10 R4012(,)S4074(as)S4195(modi\256ed)S4589(by)S4726(the)S4886(process's)S2592 V1080(mode)S1328(mask)S1565(\(see)S10 B1753(umask)S10 R2038(\(2\)\).)S2265(Also)S2480(see)S10 B2634(chmod)S10 R2925(\(2\))S3068(for)S3211(the)S3359(construction)S3881(of)S3990(the)S10 I4138(mode)S10 R4381(argument.)S2760 V1080(If)S1173(the)S1321(\256le)S1475(did)S1628(exist,)S1868(its)S1988(mode)S2236(and)S2406(owner)S2683(remain)S2988(unchanged)S3448(but)S3601(it)S3682(is)S3774(truncated)S4174(to)S4277(0)S4352(length.)S2928 V1080(The)S1262(\256le)S1416(is)S1508(also)S1695(opened)S2010(for)S(writing,)316 2153 A2494(and)S2664(its)S2784(\256le)S2938(descriptor)S3366(is)S3458(returned.)S3096 V9 R720(N)S722(NO)S790(OT)S858(TE)S916(ES)S974(S)S3216 V10 R1080(The)S10 I1268(mode)S10 R1517(given)S1771(is)S1869(arbitrary;)S2276(it)S2363(need)S2585(not)S2745(allow)S(writing.)316 3001 A3374(This)S3585(feature)S3898(has)S4064(been)S4286(used)S4502(in)S4612(the)S4767(past)S4961(by)S5093(pro-)S3336 V1080(grams)S1356(to)S1464(construct)S1862(a)S1936(simple,)S2258(exclusive)S2667(locking)S2997(mechanism.)S3534(It)S3625(is)S(replaced)342 3721 A4092(by)S4221(the)S4373(O_EXCL)S4789(open)S5013(mode,)S3456 V1080(or)S1189(the)S1337(advisory)S1708(locking)S2034(of)S2143(the)S10 B2291(fcntl)S10 R2488(\(2\))S(facility.)311 2631 A3624 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)S3744 V10 R1080(The)S1269(value)S10 R-11519(-)S10 R1576(1)S1658(is)S1757(returned)S2125(if)S2219(an)S2346(error)S2575(occurs.)S2920(Otherwise,)S3392(the)S3547(call)S3725(returns)S4038(a)S(non-negative)525 4116 A4674(descriptor)S5110(that)S3864 V1080(only)S1283(permits)S(writing.)316 1610 A4032 V9 R720(E)S722(ER)S780(RR)S842(RO)S904(OR)S972(RS)S1034(S)S4152 V10 I1080(Creat)S10 R(will)157 1334 A1516(fail)S1676(and)S1846(the)S1994(\256le)S(will)157 2148 A2330(not)S2483(be)S2603(created)S2920(or)S3029(truncated)S3429(if)S3516(one)S3686(of)S3795(the)S3943(following)S4359(occur:)S4320 V1080([ENOTDIR])S1830(A)S(component)446 1928 A2399(of)S2508(the)S2656(path)S2854(pre\256x)S3114(is)S3206(not)S3359(a)S3429(directory.)S4488 V([ENAMETOOLONG])916 1080 A4608 V1830(The)S2012(path)S2210(name)S(exceeds)319 2453 A2797(PATH_MAX)S3371(characters.)S4776 V1080([ENOENT])S1830(The)S2012(named)S2305(\256le)S2459(does)S2668(not)S2821(exist.)S4944 V1080([ELOOP])S1830(Too)S2033(many)S2297(symbolic)S2706(links)S2942(were)S(encountered)492 3180 A3713(in)S3833(translating)S4300(the)S4465(pathname.)S4948(\(Minix-)S5064 V1830(vmd\))S5232 V1080([EACCES])S1830(Search)S2130(permission)S2596(is)S2688(denied)S2981(for)S3124(a)S(component)446 3194 A3665(of)S3774(the)S3922(path)S4120(pre\256x.)S5400 V1080([EACCES])S1830(The)S2012(\256le)S2166(does)S2375(not)S2528(exist)S2743(and)S2913(the)S3061(directory)S3450(in)S3553(which)S3824(it)S3905(is)S3997(to)S4100(be)S4220(created)S4537(is)S4629(not)S4782(writable.)S5568 V1080([EACCES])S1830(The)S2012(\256le)S2166(exists,)S2445(but)S2598(it)S2679(is)S2771(unwritable.)S5736 V1080([EISDIR])S1830(The)S2012(\256le)S2166(is)S2258(a)S2328(directory.)S5904 V1080([EMFILE])S1830(There)S2091(are)S2240(already)S2562(too)S2715(many)S2963(\256les)S3156(open.)S6072 V1080([ENFILE])S1830(The)S2012(system)S2316(\256le)S2470(table)S2691(is)S2783(full.)S6240 V1080([ENOSPC])S1830(The)S2016(directory)S2409(in)S2516(which)S2791(the)S2943(entry)S3179(for)S3326(the)S3478(new)S3675(\256le)S3833(is)S3929(being)S(placed)263 4182 A(cannot)268 4475 A4773(be)S4898(extended)S6360 V(because)319 1830 A2174(there)S2401(is)S2493(no)S(space)224 2618 A2867(left)S3027(on)S3152(the)S3300(\256le)S3454(system)S3758(containing)S4207(the)S4355(directory.)S6528 V1080([ENOSPC])S1830(There)S2091(are)S2240(no)S2365(free)S(inodes)262 2548 A2835(on)S2960(the)S3108(\256le)S3262(system)S3566(on)S3691(which)S3962(the)S4110(\256le)S4264(is)S4356(being)S4604(created.)S6696 V1080([EROFS])S1830(The)S2012(named)S2305(\256le)S2459(resides)S2764(on)S2889(a)S2959(read-only)S3370(\256le)S3524(system.)S6864 V1080([ENXIO])S1830(The)S2012(\256le)S2166(is)S2258(a)S2328(character)S2724(special)S3029(or)S3139(block)S3388(special)S3694(\256le,)S3874(and)S4045(the)S4194(associated)S4634(device)S4923(does)S5133(not)S6984 V1830(exist.)S7152 V1080([EIO])S1830(An)S1978(I/O)S2138(error)S2360(occurred)S2738(while)S2987(making)S3313(the)S3461(directory)S3850(entry)S4082(or)S4191(allocating)S4613(the)S(inode.)248 4761 A7320 V1080([EFAULT])S10 I1830(Name)S10 R2090(points)S2360(outside)S2675(the)S2823(process's)S3223(allocated)S3612(address)S(space.)249 3939 A7903 V720(Page)S941(1)S2669(\()S2711(May)S2920(22,)S(1986)200 3070 A3278(\))S4455(September)S4911(13,)S(1996)200 5061 A8143 VEP%%Page: 2 2BP/slant 0 def/height 0 def480 V10 R720(CREAT)S1059(\()S1101(2)S1159(\))S2696(Eighth)S(Edition)296 2989 A4788(CREAT)S5127(\()S5169(2)S5227(\))S960 V9 R720(S)S722(SE)S774(EE)S832(E)S913(A)S915(AL)S983(LS)S1041(SO)S1093(O)S1080 V10 B1080(open)S10 R1287(\(2\),)S10 B1455(write)S10 R1680(\(2\),)S10 B1848(close)S10 R2055(\(2\),)S10 B2223(chmod)S10 R2514(\(2\),)S10 B2682(umask)S10 R2967(\(2\).)S7903 V720(September)S1176(13,)S(1996)200 1326 A2669(\()S2711(May)S2920(22,)S(1986)200 3070 A3278(\))S4990(Page)S5211(2)S8143 VEP%%Trailer%%DocumentFonts: Times-Roman Times-Bold Times-Italic%%Pages: 2

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