Path: utzoo!censor!geac!torsqnt!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!cs.utexas.edu!samsung!zaphod!lavaca.uh.edu!menudo.uh.edu!uace0 From: kevin@nuchat.UUCP (Kevin Brown) Newsgroups: comp.os.minix Subject: Fix to Minix pipes (1.5.10)... Message-ID: <1991Jan15.194514.3841@menudo.uh.edu> Date: 15 Jan 91 19:45:14 GMT Sender: kevin@nuchat.UUCP (Kevin Brown) Reply-To: kevin@nuchat.UUCP (Kevin Brown) Organization: Teenage Mutant Ninja NiceGuys [tm] :-) Lines: 288 When playing with GNU tar, I discovered that Minix pipes have an arbitrary limit of how much you can write to them using the write() system call (and, it turns out, how much you can read from them). Needless to say, this limit should not exist at all (it doesn't on any Unix I've ever played with. On most versions of Unix, large writes to pipes are just blocked). So instead of fixing GNU tar to work with this arbitrary limit, I decided to fix Minix itself. The following patch reflects the changes I made. UUdecode the following, and then decompress it. This will give you a file, pipe.patch, which you should apply by moving it to the directory containing your fs source code and doing a "patch ? @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_ begin 644 pipe.patch.Z M'YV-*@*">,.&S(LQ;]S,H>,"30(J=0-8MV+MDZ<,K( :'Ww MS9@U=_/N->HWJ8(0@)L^E6ADBF$J088L^2(D"Y6L25'(N"'#*-DT>LJ\,0,"v MQ1@T83:K2)$"1-C?P0<2=SIZ3IZ%9=J0Q?N9]-^_SYNDF3.F#!LV%8772:MRu M8<7*??\N53WX<.*I38(<23)D*PP\1-U@!&0@M!'&&6F, 8(;=;0AAF8I)837t M:F18-@=FFK7067?QG=0""$(1!8*'+<@7V&J$35755;@UMI57!$I6UEEIK=66s M16_%-5==$N&E%U^EI2985%/9IQAC+B;UV',R4E:C11=FMMF&H/DX6GRFH3;?r MD""T]EILL]5V&V,HQ "#3;[- 9QPQ!F'G'+,.2>6FM$-!P)U$EF'G7;N<1@Dq M>&*)1YYYZ$'UQGH1KO1>6E@*B:*1^.G'GW\ SB @@08BJ""##D*HTH105;A6p ME!E2Z9U/J 8$E%@TQ, "#388M9-)*+7Z*@XC>F@B?1)59<0320;[U7-WH*&9o M1&N1$09>7[PAQQEJ/6G&&W?*\89V8M211D'>);4EBD4X0<073QCQA1%),%%$n M8RV820.!;(+ %!UEC$%OA8TJL(*C@QDQ;GY3+)% C#<< .F8>!QY[82,46>m M'&G 08>ST8)@0U'Q[0LH"$1HEH8=951(9QF,!OGM8%H\X4017SA111.&):'%l MNEN-/!P*>B14QA=NR)%" HTQR5D>]#X)0LZ#]9Q4HR<3^041*:_<\LN-H5!8k MU"R[W,04+!44JJHK@J"##*PL)NLJOY-^:LPY'K2i M7TD=EQS@7^ UQQH[#$Q@L0FB$=KI%0>NX(5S9.8&4Q4FU.U63]%!.AQID)'Zh MP,_)3G*-^ :95.^_GR$'',,3:/P<:3E_*!S>:;SOR=!9MWQ%+1TW$&Mg M4^:1D59R$JT7LF5T>"^"@<=1"WQF= 8e MPN"^XH2A.7DXU DJA!R0)= W$P,!7+*UK0K%3R+_$R!<0+ &S4"%#6HA3@SKd M (([O.=].12=&\Y008G=("YK@&XH8$4JA (Q-,=]FPF<\\+0c MAK3$;UGR*H/M1^(UG.W*H@[WJ )<"EL$%9W!!%D$ ASD4T'QUX%8->T2Mb M!T5H?PRKD/CB=Q?OS8&-$@&A"$EH0A3&43!I$*#NPC"'0;[1=W;Z(1&-:!X0a MU*&#FV'=<=3BNSM&"0YOH* /J95'-[@@*=U;U@G<^ 9JM4&/:!BD^>2PA@+.z M@5H,# ,;G'B=N4BP#G91Y;3.\P;Q3?$NYEM8^M)2K#+\<#,_S,,)AAB&/4J3y M#7D8I/MRMQFZ,"2+?MG7\@"8E+:5[BS2% /12#:\YTP,+T@4:-'N0BTRG(]Bx M=DS+&Z3T1=UEC'?\))U"2;87,]"AH&+9:%HZZKL<.O1[Z$3#'2>JF8I:Y*)_w MZ0/@WK:%PD!!"D\8PA2ZL(/O).4Y1DA#^D!@!VE&9 Z_1)M "&*0,YAE<'.#v MB=UFTA&].8Y6'W+J&Z#ZDKK)!&^)6USC^)83R/E$TQB!6)/I+u M$;!P&RDX82Z^H5 RAU*$O:RTK'#*73H;*,109&WH'H1S^EY&2E2]\RR#?1AG7KBEYTYWZM(8Mp M>&D*L)$-;6R3%9X22)5!'2"YQ+)A!K(Z2E%])X0I!D (1B#K@"F4+n MO+@D" I2T-,F/^')49ZR':H\8?^Z(91;[G*7O@QE*5,Y>""@(AV^((9BSAD.m MR<$DO>0PAS2?9LU@=O.8X2SG+RQS#7[V;>M 5,L,D#RPWRA"DF8\@_2S?!UZ:!+06#"%!R.V)_.J0Y+[Q!*PLV"f M<8_:IUOAGDIKY$;ON1O>V#OEKC%N[P).CX(UHD._19;:@$^6X"H^-\(EHO"Fe M/SSB4%ENQW4^<696G$ 4Q#@:-.YO63/W/+O[2\BQ1W*3RVX+*0^P6'#)\L7*d M#N;5H8-]:1XDFVL;YQ3<#,E1P'.?;Q;H0A]YT:MP]*2#8.D+;S@(GFZ$J$^=c MRV&_>M97[&U5I0T'-6!!#FY2[K 0_?G0C[[TIT_]ZEO_^M;_R594H#J)\_K0b MW6^,]I>&_?*;__SHCWY\4'/3)%@A"+?1=>$1G8(_[R%+P2>,8-]96"=&=EKUa MI%QS 0<']$L@@ 3=5 8@(P<%!%WKI("U-44G$"U_MGV!Y0;!82UB=!FUDUKOz M\W8%LAZ^XTAAX$1%%"J")'Y_PA5P@2#8L1GU-7,SY1E&\3P]]3?(IWP9$5=6y MEWX^^(- V /C9Q3=-W_A=S:@HP)!N(1,6'WK!P+M]W[QEVS?1W'UAQKW9VZHx M877Z)P>#15G^YSL &%T#6(!)@8!WH(":T8#$\8"T15L22(%;J$!T@8&:\08;w MB%H=5"$@>$P+P1D248)A<((A8X!28$Y\I!",M4$5J$!I*%GE,5SO52#'J17)6006&4053D!CB4@1$@%AA01?OEA!4M!G(,47C4W,#t MDXNNQU<0^(DZ]XM?( 5%8 7N5Q5'H&:X>(WC)*(X)T >2AV=Gs M-@8H( +S%R&)1 9N\$"2]8:!Z 8Q!!4B4$!6,35-P&U;X8YM!0,V,!0QT!L\r M" *X" >ZN%F\^#Z^^ 3 >!C#&"Y8<8QRHHQF,440\HP(,D72F #4Z$^>:)&$q M@9';V(W?Z 3A*'G32(Y39(X15Y/J* <6@0(P8) #XXX@!X\),H_UV%D%D8^^p MLY(@4!'_&!<"^00$:9!)X8[%9WP"08NS* .=PU8H08L+V9 .J2NFP149IW-Mo MX )ML&F'(@?EH6;]-&N#1W)IN99TD >9T5/Z)%D[V9,Q8)!":6[=ME1KTUYDn M$&,S5CA3!58WUAMDY3=3AY P.=\YBO6&22(P.N(@/D-BO>\A37m M9!ZD62AJ2K;j MUX0 &J"- @55( 1,,"G,XU#6Z%Y;]A<0-X=PT9J)+.* %>J#]D:!OL*!DT*!)\:!:J!0;U$'$H4DCh M5$(GE!4$0@3&U$Z+1TB[E1:OM!?4PU#<)" )%e M8 1"D 1'D$25)!%N(%*$E&?^@XII.$030RWH\2R7V$02L:ADT*ABH08BF!+Od ME&":=@<66@9;=JA6UC ZTT2AY#JA9(!5X 8 J(Y/!$]N5Z0-Y*H@ *AJ5Q%Tc MD0?<^2 U-$ ,2!;4\H@(L3__^HZW&TATYb M1$'(0ARA9&+MEAW.4E@&X@:6F%+"Q![OQ)WK(4ASZ!M)0!S/5$ _9!&/"*M_a MB&=)JH9R0#0J]4W2Q(SLQ6"U>JM;=D@J=1S,BA=%Y*]#9"=-T 3C&;!)(:=-z M23T-(A$EVT0.Y#LMY*-"%TH<)9$!P(E6T(X-00M(P57")$1.JD3y MBK$5&DI\EZ$;*I,=BK-S*';_HZH15B]50BWPJJD153':E ;J>A?ZLZIE< (@x M XA5VW'O X ?.W:2%0='Q1!)4;!T.AX(:RP*BRQG)D#2M":;*JA$952_-88_w MQ*RAF!1/<$[B0T&'-*@,=K9V-$7K$Y+C.K!/F+-M$GB/QP9_AXXCHW.=.E#Gv M%7&MYT\'%5"BJW-D2KH268TB15*JNR9EZH[F.K5BX03=9+5R]K=;JJM_2Z62]*NK)1&#ET,G;+TI,'>:>K!6p MR["^TW',&L47VAP;5\+ZNWWE6J/+TR:ENUFGRP:>R@,DUTDL,P4RXW @0*-_o MID%F$!@<4P1"4 5'$'%NTSMM(@(*:IA;]G2&R9TE8&6IFQ#E4;,NP 5N$) +n M(E(4G !_#$"!C )I[*DDE\@I ,F2?,;_A%"4?*4CD%J,6+M&BX@.G+215KT7m MFL)0N\)S2+MDC&Y!L*=W%+QRIZIF"T3NH1?C05[RMJZKNBU(Y*R-U%Z@@1F;l MNL5E ,1_V#L:YSM[04HE%4[ AA8&* 0'5$EWY#\5479PI$JM-1Y*R:R0!2W_k M,[ZNDT/<.QK:E$A(],-Q:X!R>KQG4 =Y)KQ0U$AFT1VOQ!1RT+:YY,0)00;Jj ME1"&A*V:*I56X00&FE/BZ42GE1GUBSZ2)!%8+*D.7 3Z$015$<9+,\:8NW,:i MS :;90;H<09I80(@ -$J,]&R4;0HRIh MY#W2= ;.\JMIF12Y#,YIPM2V;"AB2U*FO$%XC!5[W,?H>,ET$,B#C+&%'%C2=8\]!?+&OK+&>G;)\:K4G90;6HAWBa M&G&^P11S)%%UM. 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