📄 getgrent.3

📁 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 13:06:45 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 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/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(GETGRENT)S1262(\()S1304(3)S1362(\))S2696(Eighth)S(Edition)296 2989 A4585(GETGRENT)S5127(\()S5169(3)S5227(\))S960 V9 R720(N)S722(NA)S790(AM)S858(ME)S940(E)S1080 V10 R1080(getgrent,)S1460(getgrnam,)S1890(getgrgid,)S2275(setgrent,)S(endgrent,)377 2644 A3046(setgr\256le)S10 R-13396(-)S10 R(group)234 3478 A3737(\256le)S3891(routines)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(<grp.h>)S1608 V1080(struct)S1371(group)S1666(*getgrent\(void\))S1728 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R720(S)S722(SE)S774(EE)S832(E)S913(A)S915(AL)S983(LS)S1041(SO)S1093(O)S6000 V10 B1080(getgroups)S10 R1505(\(2\),)S10 B1673(initgroups)S10 R2115(\(3\),)S10 B2283(getpwent)S10 R2676(\(3\),)S10 B2844(passwd)S10 R3157(\(5\).)S6168 V9 R720(D)S722(DI)S790(IA)S823(AG)S891(GN)S959(NO)S1027(OS)S1095(ST)S1147(TI)S1205(IC)S1238(CS)S1300(S)S6288 V10 B(Setgrent\(\))433 1080 A10 R1542(has)S1705(the)S1857(same)S2093(return)S2363(value)S2610(and)S2784(error)S3011(codes)S3270(as)S3384(the)S10 B3537(open)S10 R3744(\(2\))S3892(call)S4068(it)S4154(uses)S4357(to)S4465(open)S4690(the)S(group)234 4843 A5107(\256le.)S6408 V1080(The)S10 B1273(get)S10 I(xxx)135 1402 A10 B1545(\(\))S10 R1649(functions)S2059(return)S2336(NULL)S2642(on)S2778(end)S2959(of)S3079(\256le,)S3269(entry)S3512(not)S(found,)259 3676 A3971(or)S4091(error.)S4374(You)S4583(can)S4759(set)S10 B(errno)241 4907 A10 R5183(to)S6528 V1080(zero)S1279(before)S1562(the)S1710(call)S1881(and)S2051(check)S2311(it)S2392(after.)S6696 V9 R720(N)S722(NO)S790(OT)S858(TE)S916(ES)S974(S)S6816 V10 R1080(All)S10 B1234(get)S10 I(xxx)135 1363 A10 B1506(\(\))S10 R1599(routines)S1948(return)S2214(a)S2284(pointer)S2594(to)S2697(static)S2935(storage)S3251(that)S3427(is)S(overwritten)465 3519 A4009(in)S(each)185 4112 A4322(call.)S6984 V1080(Only)S10 B1330(getgrnam\(\))S10 R1861(and)S10 B2055(getgrgid\(\))S10 R2530(are)S2703(de\256ned)S3048(by)S8 R3192(POSIX)S10 R3425(.)S3524(The)S10 B(_MINIX_SOURCE)839 3730 A10 R4619(macro)S4921(must)S5166(be)S7104 V1080(de\256ned)S1407(before)S1696(including)S2106(<grp.h>)S2460(to)S2569(make)S2818(the)S2971(other)S3208(functions)S3612(visible.)S3960(The)S10 B4147(gr_passwd)S10 R4635(\256eld)S4844(is)S4941(also)S5133(not)S7224 V1080(de\256ned)S1405(by)S8 R1529(POSIX)S10 R1762(,)S1816(but)S1973(is)S2069(always)S2378(visible.)S2725(Portable)S3091(code)S(cannot)268 3311 A3609(reliably)S3947(detect)S4218(errors)S4484(by)S(setting)268 4614 A10 B(errno)241 4912 A10 R5183(to)S7344 V1080(zero.)S1337(Under)S1622(Minix)S1900(it)S1989(is)S2089(better)S2351(to)S2461(make)S2711(a)S10 B(getgrent\(\))427 2788 A10 R3247(scan)S3458(if)S(you)150 3552 A3734(need)S3956(to)S(look)178 4066 A4276(up)S4408(several)S(group-id's)419 4726 A5177(or)S7464 V1080(names,)S1403(but)S1572(portable)S1943(code)S2174(had)S2360(better)S2631(use)S2806(several)S10 B3133(getgrgid\(\))S10 R3600(or)S10 B3725(getgrnam\(\))S10 R4249(calls.)S4526(The)S10 B(getgrent\(\))427 4725 A10 R5194(is)S7903 V720(Page)S941(1)S4455(September)S4911(13,)S(1996)200 5061 A8143 VEP%%Page: 2 2BP/slant 0 def/height 0 def480 V10 R720(GETGRENT)S1262(\()S1304(3)S1362(\))S2696(Eighth)S(Edition)296 2989 A4585(GETGRENT)S5127(\()S5169(3)S5227(\))S960 V1080(usually)S1399(available)S1791(on)S1919(other)S2154(systems,)S2525(but)S2681(may)S2882(be)S3005(very)S3212(expensive.)S3692(See)S10 B3866(initgroups)S10 R4308(\(3\))S4454(if)S(you)150 4544 A4722(are)S4874(after)S5088(sup-)S1080 V1080(plementary)S(group)234 1558 A1817(id's.)S1248 V9 R720(A)S722(AU)S790(UT)S858(TH)S916(HO)S984(OR)S1052(R)S1368 V10 R1080(Kees)S1307(J.)S1396(Bot)S1566(\(kjb@cs.vu.nl\))S7903 V720(September)S1176(13,)S(1996)200 1326 A4990(Page)S5211(2)S8143 VEP%%Trailer%%DocumentFonts: Times-Roman Times-Bold Times-Italic%%Pages: 2
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