Messages in this thread |  | | Subject | [PATCH] Process adoption (2.4.9 sched.h/fork.c/exit.c) | Date | Tue, 11 Sep 2001 20:36:17 +0100 | From | Peter Lister <> |
| |
I attach a patch against 2.4.9 which implements process adoption. This seems to be of general use; as searches of the kernel-traffic archives have not thrown up anything similar, we'd like to contribute it. As noted in http://www.tux.org/lkml/#s1-19, I'm cc'ing Alan Cox; just now we're more interested in feedback from Alan and the list than immediate acceptance by Linus. Should this prompt anyone to contribute a better solution that Alan or Linus prefers, we're happy as long as it fixes the daemon tracking problem. Useful feedback welcome: I'm sure there are problems; please be gentle with a newbie contributor. :)
Functionality is similar to Solaris process lineage "orphan" fields, though the terminology is changed, as noted in the patch to sched.h, simply because the list includes processes which are NOT orphans. There is no tainting by Solaris code - none of the authors have ever had access to Solaris source.
Sychron uses this patch in kernels to support modules that track process trees; primarily to find the grandparent of a daemon process, since this is a common case which is hampered by the traditional behaviour that the parent pid becomes 1 (init). With this patch, we can find who started the original process. The existing parent pid logic is unchanged.
Before anyone comments - yes, I *do* know that there is no way to export this information to user space. So far we haven't need to.
-- Peter Lister, Sychron Inc. - 1-866-SYCHRON Intelligent Infrastructure - www.sychron.com
begin 644 patch.adoption M26YD97@Z(&QI;G5X+T1O8W5M96YT871I;VXO0V]N9FEG=7)E+FAE;'`*/3T] M/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T] M/3T]/3T]/3T]/3T]/3T]/3T]/0I20U,@9FEL93H@+W5S97)S+W-Y8VAR;VXO M8W9S<F]O="]L:6YU>"]$;V-U;65N=&%T:6]N+T-O;F9I9W5R92YH96QP+'8* M<F5T<FEE=FEN9R!R979I<VEO;B`Q+C$N,BXQ,`IR971R:65V:6YG(')E=FES M:6]N(#$N,2XR+C$P+C(N,@ID:69F("UU("UR,2XQ+C(N,3`@+7(Q+C$N,BXQ M,"XR+C(*+2TM(&QI;G5X+T1O8W5M96YT871I;VXO0V]N9FEG=7)E+FAE;'`) M,C`P,2\P."\R-"`Q,3HQ.3HR-0DQ+C$N,BXQ,`HK*RL@;&EN=7@O1&]C=6UE M;G1A=&EO;B]#;VYF:6=U<F4N:&5L<`DR,#`Q+S`Y+S$Q(#$R.C(V.C`Q"3$N M,2XR+C$P+C(N,@I`0"`M,3@T-C@L-B`K,3@T-C@L,3<@0$`*("`@5&\@=7-E M('1H:7,@;W!T:6]N+"!Y;W4@:&%V92!T;R!C:&5C:R!T:&%T('1H92`B+W!R M;V,@9FEL92!S>7-T96T*("`@<W5P<&]R="(@*$-/3D9)1U]04D]#7T93*2!I M<R!E;F%B;&5D+"!T;V\N"B`**U!R;V-E<W,@861O<'1I;VX**T-/3D9)1U]0 M4D]#15-37T%$3U!424]."BL**R`@16YA8FQE<R!A9&1I=&EO;F%L('!R;V-E M<W,@;&EN96%G92!C;V1E.R!W:&5N(&$@<')O8V5S<R!D:65S+"!I=',**R`@ M8VAI;&1R96X@87)E(&%D;W!T960@8GD@=&AE(&YE87)E<W0@<W5R=FEV:6YG M(&%N8V5S=&]R+"!R871H97(@=&AA;@HK("!T:&%N(#$@*&EN:70I+"!T:&4@ M=')A9&ET:6]N86P@54Y)6"!F=6YC=&EO;F%L:71Y+@HK"BL@(%1H:7,@:7,@ M=7-E9G5L+"!F;W(@97AA;7!L92P@=VAE;B!T<F%C:VEN9R!D865M;VX@<')O M8V5S<V5S('=H97)E"BL@('1H92!I;FET:6%L('!R;V-E<W,@9F]R:W,@82!C M:&EL9"!A;F0@=&AE;B!E>&ET<R`M('1H92!O<G!H86YE9`HK("!P<F]C97-S M(&ES(&%D;W!T960@8GD@:71S(&=R86YD<&%R96YT(')A=&AE<B!T:&%N(&EN M:70N"BL*(",*(",@02!C;W5P;&4@;V8@=&AI;F=S($D@:V5E<"!F;W)G971T M:6YG.@H@(R`@(&-A<&ET86QI>F4Z($%P<&QE5&%L:RP@171H97)N970L($1/ M4RP@1$U!+"!&050L($944"P@26YT97)N970L(`I);F1E>#H@;&EN=7@O87)C M:"]I,S@V+V-O;F9I9RYI;@H]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T] M/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]"E)#4R!F M:6QE.B`O=7-E<G,O<WEC:')O;B]C=G-R;V]T+VQI;G5X+V%R8V@O:3,X-B]C M;VYF:6<N:6XL=@IR971R:65V:6YG(')E=FES:6]N(#$N,2XR+C8*<F5T<FEE M=FEN9R!R979I<VEO;B`Q+C$N,BXV+C(N,0ID:69F("UU("UR,2XQ+C(N-B`M M<C$N,2XR+C8N,BXQ"BTM+2!L:6YU>"]A<F-H+VDS.#8O8V]N9FEG+FEN"3(P M,#$O,#@O,38@,3@Z,S<Z-#@),2XQ+C(N-@HK*RL@;&EN=7@O87)C:"]I,S@V M+V-O;F9I9RYI;@DR,#`Q+S`X+S(T(#$U.C(Y.C(T"3$N,2XR+C8N,BXQ"D!` M("TQ.#4L-B`K,3@U+#<@0$`*(&UA:6YM96YU7V]P=&EO;B!N97AT7V-O;6UE M;G0*(&-O;6UE;G0@)T=E;F5R86P@<V5T=7`G"B`**V)O;VP@)U!R;V-E<W,@ M061O<'1I;VXG($-/3D9)1U]04D]#15-37T%$3U!424]."B!B;V]L("=.971W M;W)K:6YG('-U<'!O<G0G($-/3D9)1U].150*(&)O;VP@)U-'22!6:7-U86P@ M5V]R:W-T871I;VX@<W5P<&]R="<@0T].1DE'7U9)4U=3"B!I9B!;("(D0T]. M1DE'7U9)4U=3(B`](")Y(B!=.R!T:&5N"DEN9&5X.B!L:6YU>"]I;F-L=61E M+VQI;G5X+W-C:&5D+F@*/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T] M/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/0I20U,@9FEL M93H@+W5S97)S+W-Y8VAR;VXO8W9S<F]O="]L:6YU>"]I;F-L=61E+VQI;G5X M+W-C:&5D+F@L=@IR971R:65V:6YG(')E=FES:6]N(#$N,2XR+C8*<F5T<FEE M=FEN9R!R979I<VEO;B`Q+C$N,BXV+C(N,0ID:69F("UU("UR,2XQ+C(N-B`M M<C$N,2XR+C8N,BXQ"BTM+2!L:6YU>"]I;F-L=61E+VQI;G5X+W-C:&5D+F@) M,C`P,2\P."\Q-B`Q.#HS-SHR,0DQ+C$N,BXV"BLK*R!L:6YU>"]I;F-L=61E M+VQI;G5X+W-C:&5D+F@),C`P,2\P."\R-"`Q-3HR.3HR-`DQ+C$N,BXV+C(N M,0I`0"`M-#`Q+#8@*S0P,2PV,"!`0`H@("`@"74S,B!S96QF7V5X96-?:60[ M"B`O*B!0<F]T96-T:6]N(&]F("AD92TI86QL;V-A=&EO;CH@;6TL(&9I;&5S M+"!F<RP@='1Y("HO"B`)<W!I;FQO8VM?="!A;&QO8U]L;V-K.PHK(VEF9&5F M($-/3D9)1U]04D]#15-37T%$3U!424]."BLO*B!04D]#15-3($%$3U!424]. M(&-O9&4@0V]P>7)I9VAT(%-Y8VAR;VX@26YC+B`R,#`Q("T@=W=W+G-Y8VAR M;VXN8V]M("HO"BLO*B!04D]#15-3($%$3U!424].(&-O9&4@=V%S('=R:71T M96X@9G)O;2!S8W)A=&-H('=I=&AO=70@<F5F97)E;F-E('1O"BL@*B!A;GD@ M<&%R="!O9B!3;VQA<FES(&]R(&%N>2!O=&AE<B!S;V9T=V%R92X@3F\@<F5F M97)E;F-E('=A<R!M861E('1O"BL@*B!C;W!Y<FEG:'0@;6%T97)I86P@8F5L M;VYG:6YG('1O(%-U;B!-:6-R;W-Y<W1E;7,L($EN8RX@;W1H97(@=&AA;@HK M("H@<'5B;&EC;'D@879A:6QA8FQE(&EN9F]R;6%T:6]N+"!S<&5C:69I8V%L M;'D@36%U<F\@86YD($UC1&]U9V%L;`HK("H@(E-O;&%R:7,@26YT97)N86QS M(BP@*%-U;B!-:6-R;W-Y<W1E;7,@4')E<W,@+R!0<F5N=&EC92!(86QL($E3 M0DX**R`J(#`M,3,M,#(R-#DV+3`I"BL@*@HK("H@<%]N:W!T<B`@+2!.97AT M($]F($MI;CL@<')O8V5S<R=S(&-L;W-E<W0@;&EV:6YG(&%N8V5S=&]R"BL@ M*B!P7V%D<'1R("`M($%D;W!T960@1&5S8V5N9&5N=',@*'-E92!B96QO=RD* M*R`J('!?<&%S<'1R("T@4')E=FEO=7,@061O<'1E9"!3:6)L:6YG("AI;B!. M97AT($]F($MI;B=S($%$(&QI<W0I"BL@*B!P7VYA<W!T<B`M($YE>'0@061O M<'1E9"!3:6)L:6YG("AI;B!.97AT($]F($MI;B=S($%$(&QI<W0I"BL@*@HK M("H@5&AE<V4@9FEE;&1S(&%R92!U<V5D(&)Y('1H92!A8V-O;7!A;GEI;F<@ M8V]D92!P871C:&5S('1O"BL@*B!K97)N96PO>V9O<FLL97AI='TN8R!T;R!I M;7!L96UE;G0@<')O8V5S<R!A9&]P=&EO;B!I;B!A('-I;6EL87(**R`J('-T M>6QE('1O(%-U;B=S(%-O;&%R:7,N($]R<&AA;F5D('!R;V-E<W-E<R!A<F4@ M861O<'1E9"!B>2!T:&5I<@HK("H@8VQO<V5S="!S=7)V:79I;F<@86YC97-T M;W(L('=H97)E87,@=')A9&ET:6]N86P@52HJ6"!F=6YC=&EO;F%L:71Y"BL@ M*B`H<%]C<'1R+"!P7W!P='(L('!?>7-P='(L('!?;W-P='(I(&ES('1H870@ M;W)P:&%N('!R;V-E<W-E<R!A<F4**R`J(&%D;W!T960@8GD@:6YI="`H<&ED M(#$I+B`@5VET:"!D865M;VYS+"!T:&4@:6YI=&EA;"!P<F]C97-S(&5X:71S M"BL@*B!A;&UO<W0@:6UM961I871E;'D[(&UU8V@@8F5T=&5R(&EF('1H92!R M=6YN:6YG(&1A96UO;B!C86X@8F4@=')A8V5D"BL@*B!B86-K('1O('1H92!S M:&5L;"!W:&EC:"!I;G9O:V5D(&ET<R!P87)E;G0N"BL@*@HK("H@4V]L87)I M<R!E<75I=F%L96YT<R!A<F4N+BX**R`J('!?;FMP='(@(#T@;F5X=&]F:VEN M"BL@*B!P7V%D<'1R("`](&]R<&AA;@HK("H@<%]N87-P='(@/2!N97AT;W)P M:`HK("H@6R!P7W!A<W!T<B!H87,@;F\@4V]L87)I<R!E<75I=F%L96YT+"!A M<R!I=',@;&ES="!I<R!S:6YG;'D@;&EN:V5D(%T**R`J"BL@*B!P7V%D<'1R M(&ES(&$@<&]I;G1E<B!T;R!A(&1O=6)L>2UL:6YK960@;&ES="`H<VEM:6QA M<B!T;R!P7V-P='(I(&]F"BL@*B!T:&4@<')O8V5S<R=S(&1E<V-E;F1E;G1S M('=H:6-H(&AA=F4@;F\@;W1H97(@;F5X="!O9B!K:6XN(%1H92!L:7-T"BL@ M*B!I;F-L=61E<R!T:&4@<')O8V5S<R=S(&]W;B!C:&EL9')E;B`H9'5P;&EC M871I;F<@=&AE('!?8W!T<B!L:7-T*2P**R`J(&%N9"!O<G!H86YE9"!G<F%N M9&-H:6QD<F5N(&%D;W!T960@=VAE;B!A(&-H:6QD(&1I960N("!3;VQA<FES M)W,**R`J(")N97AT;V9K:6XB('-E96US(&$@<F5A<V]N86)L92!T97)M("T@ M;VYE(&ES(&YE>'0@;V8@:VEN('1O(&]N92=S"BL@*B!O=VX@8VAI;&1R96X@ M87,@=V5L;"!A<R!T:&]S92!O;F4@861O<'1S+B!(;W=E=F5R+"!3;VQA<FES M)W,**R`J(")O<G!H86XB(&ES(&IU<W0@<&QA:6X@=W)O;F<@+2!O;F4G<R!O M=VX@8VAI;&1R96X@87)E(&-L96%R;'D@;F]T"BL@*B!O<G!H86YS('=H:6QE M(&]N92!L:79E<RX@(")$97-C96YD96YT(B!S965M<R!E<75A;&QY('=R;VYG M+"!S:6YC90HK("H@9W)A;F1C:&EL9')E;B!W:71H(')U;FYI;F<@<&%R96YT M<R!A<F4@9&5S8V5N9&5N=',@*&%S(&%R92`J=&AE:7(J"BL@*B!D97-C96YD M96YT<RDL(&)U="!C;&5A<FQY('-H;W5L9"!N;W0@8F4@:6X@=&AI<R!L:7-T M+B!792!U<V4**R`J(")!9&]P=&5D($1E<V-E;F1E;G1S(B`H041S*3L@:68@ M<F5G87)D:6YG(&]N92=S(&]W;B!C:&EL9')E;B!A<PHK("H@(F%D;W!T960B M('-E96US(&]D9"P@8V]N<VED97(@=&AE;2!I;7!L:6-I=&QY(&%D;W!T960@ M870@8FER=&@@87,**R`J(&1I<W1I;F-T(&9R;VT@;W)P:&%N960@9W)A;F1C M:&EL9')E;B!E>'!L:6-I=&QY(&%D;W!T960@;&%T97(N"BL@*@HK("H@<%]P M87-P='(@86YD('!?;F%S<'1R(&1O(&YO="!H879E('1H92!S86UE('EO=6YG M97(@86YD(&]L9&5R"BL@*B!S96UA;G1I8W,@87,@<%]Y<W!T<B!A;F0@<%]O M<W!T<BX@4&]S:71I;VX@:6X@=&AE(&QI<W0@<F5F;&5C=',**R`J('=H96X@ M=&AE:7(@<&%R96YT(&1I960L(&YO="!T:&5I<B!C<F5A=&EO;B!T:6UE+"!S M;R!T:&5Y(&%R90HK("H@<F5F97)R960@=&\@87,@<')E=FEO=7,@86YD(&YE M>'0@=&\@9&ES8V]U<F%G92!A<W-U;7!T:6]N<R!A8F]U=`HK("H@86=E(&]R M9&5R+B!P7V%D<'1R('!O:6YT<R!T;R!T:&4@;6]S="!R96-E;G1L>2!A9&]P M=&5D('!R;V-E<W,[('1H90HK("H@;&ES="!I<R!T<F%V97)S960@=FEA('!? M;F%S<'1R+"!S;R!T:&4@(FYE>'0B(&%D;W!T960@<VEB;&EN9R!W87,**R`J M(&%D;W!T960@*F)E9F]R92H@:71S('!R961E8V5S<V]R+"!L:6ME('1H92!3 M;VQA<FES(&YE>'1O<G!H(&]R9&5R+@HK("H**R`J+PHK"7-T<G5C="!T87-K M7W-T<G5C="`J<%]N:W!T<BP@*G!?9'!T<BP@*G!?<&1P='(L("IP7VYD<'1R M.PHK(V5N9&EF"B!].PH@"B`O*@I`0"`M-#,W+#8@*S0Y,2PQ-B!`0`H@(V1E M9FEN92!-05A?0T]53E1%4@DH,C`J2%HO,3`P*0H@(V1E9FEN92!$149?3DE# M10DH,"D*(`HK(VEF9&5F($-/3D9)1U]04D]#15-37T%$3U!424]."BLC9&5F M:6YE($E.251?5$%32U]!1$]05$E/3B!<"BL@('!?;FMP='(Z("@F:6YI=%]T M87-K*2P@7`HK("!P7V%D<'1R.B!.54Q,+"!<"BL@('!?<&%S<'1R.B!.54Q, M+"!<"BL@('!?;F%S<'1R.B!.54Q,+`HK(V5L<V4**R-D969I;F4@24Y)5%]4 M05-+7T%$3U!424]."BLC96YD:68**PH@+RH*("`J("!)3DE47U1!4TL@:7,@ M=7-E9"!T;R!S970@=7`@=&AE(&9I<G-T('1A<VL@=&%B;&4L('1O=6-H(&%T M"B`@*B!Y;W5R(&]W;B!R:7-K(2X@0F%S93TP+"!L:6UI=#TP>#%F9F9F9B`H M/3)-0BD*0$`@+30W.2PW("LU-#,L."!`0`H@("`@('-I9SH)"29I;FET7W-I M9VYA;',L"0D)"0E<"B`@("`@<&5N9&EN9SH)"7L@3E5,3"P@)G1S:RYP96YD M:6YG+FAE860L('M[,'U]?2P)"5P*("`@("!B;&]C:V5D.@D)>WLP?7TL"0D) M"0D)7`HM("`@(&%L;&]C7VQO8VLZ"0E34$E.7TQ/0TM?54Y,3T-+140)"0D) M7`HK("`@(&%L;&]C7VQO8VLZ"0E34$E.7TQ/0TM?54Y,3T-+140L"0D)"5P* M*R`@("!)3DE47U1!4TM?041/4%1)3TX*('T*(`H@"DEN9&5X.B!L:6YU>"]K M97)N96PO97AI="YC"CT]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T] M/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T*4D-3(&9I;&4Z M("]U<V5R<R]S>6-H<F]N+V-V<W)O;W0O;&EN=7@O:V5R;F5L+V5X:70N8RQV M"G)E=')I979I;F<@<F5V:7-I;VX@,2XQ+C(N-`IR971R:65V:6YG(')E=FES M:6]N(#$N,2XR+C0N,BXQ"F1I9F8@+74@+7(Q+C$N,BXT("UR,2XQ+C(N-"XR M+C$*+2TM(&QI;G5X+VME<FYE;"]E>&ET+F,),C`P,2\P."\R-"`Q,3HQ-SHQ M-@DQ+C$N,BXT"BLK*R!L:6YU>"]K97)N96PO97AI="YC"3(P,#$O,#@O,C0@ M,34Z,CDZ,C0),2XQ+C(N-"XR+C$*0$`@+30Q."PV("LT,3@L,S4@0$`*(`D) M"7=R:71E7VQO8VM?:7)Q*"9T87-K;&ES=%]L;V-K*3L*(`D)?0H@"7T**R-I M9F1E9B!#3TY&24=?4%)/0T534U]!1$]05$E/3@HK"2\J(%!23T-%4U,@041/ M4%1)3TX@8V]D92!#;W!Y<FEG:'0@4WEC:')O;B!);F,N(#(P,#$@+2!W=W<N M<WEC:')O;BYC;VT@*B\**PDO*B!0;&5A<V4@<V5E(&EN8VQU9&4O;&EN=7@O M<V-H960N:"`J+PHK"BL)+RH@4F5M;W9E(&-U<G)E;G0@9G)O;2!I=',@;F5X M="UO9BUK:6XG<R!!9&]P=&5D($1E<V-E;F1E;G0@;&ES="`J+PHK"6EF("AC M=7)R96YT+3YP7W!A<W!T<B`A/2!.54Q,*0HK"0EC=7)R96YT+3YP7W!A<W!T M<BT^<%]N87-P='(@/2!C=7)R96YT+3YP7VYA<W!T<CL**PEE;'-E"BL)"6-U M<G)E;G0M/G!?;FMP='(M/G!?861P='(@/2!C=7)R96YT+3YP7VYA<W!T<CL* M*PEI9B`H8W5R<F5N="T^<%]N87-P='(@(3T@3E5,3"D**PD)8W5R<F5N="T^ M<%]N87-P='(M/G!?<&%S<'1R(#T@8W5R<F5N="T^<%]P87-P='(["BL**PDO M*B!)9B!C=7)R96YT(&AA<R!A;B!!1"!L:7-T+"!P87-S('1H96T@=7`@=&\@ M8W5R<F5N="=S(&YE>'0@;V8@:VEN("HO"BL):68@*&-U<G)E;G0M/G!?861P M='(I('L**PD)+RH@1F]R(&5A8V@@;V8@8W5R<F5N="=S($%$<RP@<V5T('1H M92!N97AT(&]F(&MI;B!T;PHK"0D@*B`@(&)E(&ET<R`H8W5R<F5N="=S*2!N M97AT(&]F(&MI;BX@("HO"BL)"7-T<G5C="!T87-K7W-T<G5C="`J<"P@*FQA M<W1?040["BL)"69O<B`H<"`](&QA<W1?040@/2!C=7)R96YT+3YP7V%D<'1R M.R!P.R!P(#T@<"T^<%]N87-P='(I('L**PD)"7`M/G!?;FMP='(@/2!C=7)R M96YT+3YP7VYK<'1R.PHK"0D);&%S=%]!1"`]('`["BL)"7T**PD)+RH@3&EN M:R!C=7)R96YT)W,@040@;&ES="!I;G1O(&ET<R`H8W5R<F5N="=S*0HK"0D@ M*B`@(&YE>'0M;V8M:VEN)W,@040@;&ES="`J+PHK"0EL87-T7T%$+3YP7VYA M<W!T<B`](&-U<G)E;G0M/G!?;FMP='(M/G!?861P='(["BL)"6EF("AC=7)R M96YT+3YP7VYK<'1R+3YP7V%D<'1R*0HK"0D)8W5R<F5N="T^<%]N:W!T<BT^ M<%]A9'!T<BT^<%]P87-P='(@/2!L87-T7T%$.PHK"0EC=7)R96YT+3YP7VYK M<'1R+3YP7V%D<'1R(#T@8W5R<F5N="T^<%]A9'!T<CL**PE]"BLC96YD:68* M(`EW<FET95]U;FQO8VM?:7)Q*"9T87-K;&ES=%]L;V-K*3L*('T*(`I);F1E M>#H@;&EN=7@O:V5R;F5L+V9O<FLN8PH]/3T]/3T]/3T]/3T]/3T]/3T]/3T] M/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T]/3T] M"E)#4R!F:6QE.B`O=7-E<G,O<WEC:')O;B]C=G-R;V]T+VQI;G5X+VME<FYE M;"]F;W)K+F,L=@IR971R:65V:6YG(')E=FES:6]N(#$N,2XR+C<*<F5T<FEE M=FEN9R!R979I<VEO;B`Q+C$N,BXW+C(N,0ID:69F("UU("UR,2XQ+C(N-R`M M<C$N,2XR+C<N,BXQ"BTM+2!L:6YU>"]K97)N96PO9F]R:RYC"3(P,#$O,#@O M,38@,3@Z,S<Z,C`),2XQ+C(N-PHK*RL@;&EN=7@O:V5R;F5L+V9O<FLN8PDR M,#`Q+S`X+S(T(#$U.C(Y.C(T"3$N,2XR+C<N,BXQ"D!`("TV,3`L-B`K-C$P M+#$X($!`"B`)<"T^<G5N7VQI<W0N<')E=B`]($Y53$P["B`*(`EP+3YP7V-P M='(@/2!.54Q,.PHK(VEF9&5F($-/3D9)1U]04D]#15-37T%$3U!424]."BL) M+RH@4%)/0T534R!!1$]05$E/3B!C;V1E($-O<'ER:6=H="!3>6-H<F]N($EN M8RX@,C`P,2`M('=W=RYS>6-H<F]N+F-O;2`J+PHK"2\J(%!L96%S92!S964@ M:6YC;'5D92]L:6YU>"]S8VAE9"YH("HO"BL**PEP+3YP7VYK<'1R("`](&-U M<G)E;G0[("`@("`@("`@("`@+RH@0W5R<F5N="!I<R!T:&4@;F5W(&-H:6QD M)W,@;F5X="!O9B!K:6X@("`@("`@("`@("`@("`@("`@("`J+PHK"7`M/G!? M861P='(@(#T@3E5,3#L@("`@("`@("`@("`@("`O*B!4:&4@;F5W(&-H:6QD M(&AA<R!N;R!!9&]P=&5D($1E<V-E;F1E;G1S("`@("`@("`@("`@("`@("`@ M("HO"BL)<"T^<%]P87-P='(@/2!.54Q,.R`@("`@("`@("`@("`@("\J(%1H M92!N97<@8VAI;&0@:7,@9FER<W0@:6X@=&AE($%$(&QI<W0@*&YO('!R961E M8V5S<V]R<RD@("`@*B\**R`@("`@("`)<"T^<%]N87-P='(@/2!C=7)R96YT M+3YP7V%D<'1R.R`@("\J(%1H92!N97<@8VAI;&0G<R!S=6-C97-S;W(@:7,@ M=&AE(&AE860@;V8@8W5R<F5N="=S($%$(&QI<W0@*B\**PEI9B`H8W5R<F5N M="T^<%]A9'!T<BD@("`@("`@("`@("`@+RH@268@8W5R<F5N="!H87,@86X@ M97AI<W1I;F<@040@;&ES="P@("`@("`@("`@("`@("`@("`@("`@("`J+PHK M"0EC=7)R96YT+3YP7V%D<'1R+3YP7W!A<W!T<B`]('`[("\J("!T:&4@;F5W M(&-H:6QD(&)E8V]M97,@:71S('!R961E8V5S<V]R("`@("`@("`@("`@("`@ M*B\**PEC=7)R96YT+3YP7V%D<'1R(#T@<#L@("`@("`@("`@("`@+RH@5&AE M(&YE=R!C:&EL9"!B96-O;65S('1H92!H96%D(&]F(&-U<G)E;G0G<R!!1"!L M:7-T("`@("`@("`J+PHK(V5N9&EF"B`):6YI=%]W86ET<75E=65?:&5A9"@F M<"T^=V%I=%]C:&QD97AI="D["B`)<"T^=F9O<FM?9&]N92`]($Y53$P["B`) A:68@*&-L;VYE7V9L86=S("8@0TQ/3D5?5D9/4DLI('L* ` end
The accompanying patch is Copyright Sychron 2001
This patch implements process adoption; fields have been added to the task structure and logic to the process creation/destruction (fork and exit) functions to maintain a link to each process's nearest living ancestor.
The traditional behaviour of the parent pid (set to 1 when the parent dies) does not cope with daemons which outlive their (short lived) parents.
Refer the annotation in sched.h for details.
Peter Lister p.lister@sychron.com 11-Sep-2001
|  |