2 %%Creator: Basser Lout Version 3.10 (November 1996)
3 %%CreationDate: Sun Aug 13 13:16:53 2000
5 %%DocumentNeededResources: (atend)
6 %%DocumentMedia: Plain 595 842 0 white ()
7 %%DocumentSuppliedResources: (atend)
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13 %%BeginResource: procset LoutStartUp
14 /m { 3 1 roll moveto show } bind def
15 /s { exch currentpoint exch pop moveto show } bind def
16 /k { exch neg 0 rmoveto show } bind def
17 /ul { gsave setlinewidth dup 3 1 roll
18 moveto lineto stroke grestore } bind def
38 /LoutGr2 { gsave translate LoutGraphic gsave } def
41 { findfont exch scalefont setfont
45 { findfont dup length dict begin
46 {1 index /FID ne {def} {pop pop} ifelse} forall
48 currentdict end definefont pop
54 /LoutEPSFState save def
55 /dict_count countdictstack def
56 /op_count count 1 sub def
59 0 setgray 0 setlinecap
60 1 setlinewidth 0 setlinejoin
61 10 setmiterlimit [] 0 setdash newpath
65 { false setstrokeadjust false setoverprint
71 count op_count sub { pop } repeat
72 countdictstack dict_count sub { end } repeat
77 %%BeginResource encoding vec2
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80 /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef
81 /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef
82 /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef
83 /space /exclam /quotedbl /numbersign /dollar /percent /ampersand /quoteright
84 /parenleft /parenright /asterisk /plus /comma /hyphen /period /slash
85 /zero /one /two /three /four /five /six /seven
86 /eight /nine /colon /semicolon /less /equal /greater /question
87 /at /A /B /C /D /E /F /G
88 /H /I /J /K /L /M /N /O
89 /P /Q /R /S /T /U /V /W
90 /X /Y /Z /bracketleft /backslash /bracketright /asciicircum /underscore
91 /quoteleft /a /b /c /d /e /f /g
92 /h /i /j /k /l /m /n /o
93 /p /q /r /s /t /u /v /w
94 /x /y /z /braceleft /bar /braceright /asciitilde /.notdef
95 /quotesinglbase /quotedblbase /ellipsis /OE /oe /quotedblleft /quotedblright /fi
96 /fl /endash /emdash /bullet /dagger /daggerdbl /florin /fraction
97 /dotlessi /grave /acute /circumflex /tilde /macron /breve /dotaccent
98 /dieresis /.notdef /ring /cedilla /.notdef /hungarumlaut /ogonek /caron
99 /space /exclamdown /cent /sterling /currency /yen /brokenbar /section
100 /dieresis /copyright /ordfeminine /guillemotleft /logicalnot /hyphen /registered /macron
101 /degree /plusminus /twosuperior /threesuperior /acute /mu /paragraph /periodcentered
102 /cedilla /onesuperior /ordmasculine /guillemotright /onequarter /onehalf /threequarters /questiondown
103 /Agrave /Aacute /Acircumflex /Atilde /Adieresis /Aring /AE /Ccedilla
104 /Egrave /Eacute /Ecircumflex /Edieresis /Igrave /Iacute /Icircumflex /Idieresis
105 /Eth /Ntilde /Ograve /Oacute /Ocircumflex /Otilde /Odieresis /multiply
106 /Oslash /Ugrave /Uacute /Ucircumflex /Udieresis /Yacute /Thorn /germandbls
107 /agrave /aacute /acircumflex /atilde /adieresis /aring /ae /ccedilla
108 /egrave /eacute /ecircumflex /edieresis /igrave /iacute /icircumflex /idieresis
109 /eth /ntilde /ograve /oacute /ocircumflex /otilde /odieresis /divide
110 /oslash /ugrave /uacute /ucircumflex /udieresis /yacute /thorn /ydieresis
114 %%BeginResource: procset LoutMarginNotes
115 % @PrependGraphic file /usr/lib/lout/include/dl.lpg
117 % path for @FullWidthRule symbol
119 { 0 0 moveto xsize 0 lineto
122 % path for @Box symbol
124 { 0 0 moveto xsize 0 lineto
125 xsize ysize lineto 0 ysize lineto
129 % path for @CurveBox symbol
132 xsize xmark sub xmark xmark 270 360 arc
133 xsize xmark sub ysize xmark sub xmark 0 90 arc
134 xmark ysize xmark sub xmark 90 180 arc
135 xmark xmark xmark 180 270 arc
139 % path for @ShadowBox symbol
141 { xmark 2 mul 0 moveto xsize 0 lineto
142 xsize ysize xmark 2 mul sub lineto
143 xsize xmark sub ysize xmark 2 mul sub lineto
144 xsize xmark sub xmark lineto
145 xmark 2 mul xmark lineto
149 % set up dictionary containing margin note data: parity LoutMargSet -
151 { /LoutMargDict 12 dict def
154 /matr matrix currentmatrix def
156 /lefty ysize def % highest allowable point for top of next left note
157 /righty ysize def % highest allowable point for top of next right note
158 /max { 2 copy gt { pop } { exch pop } ifelse } def
159 /min { 2 copy lt { pop } { exch pop } ifelse } def
163 %translate coordinate system for marginal notes: type LoutMargShift -
164 % where type 0 is left margin, 1 is right margin, 2 is outer, 3 is inner
168 % y coordinate of top of note, in margin coords, before vertical adjust
169 0 ysize transform matr itransform exch pop
171 % decide whether left or right margin based on type and parity
172 exch [ 0 1 parity 1 parity sub ] exch get 0 eq
174 % left margin: adjust top of note downwards if overlaps previous note
177 % bottom of note is new lefty position and also translate position
178 ysize sub dup /lefty exch def
180 % want right edge of note at coordinate zero
184 % right margin: adjust top of note downwards if overlaps previous note
187 % bottom of note is new righty position and also translate position
188 ysize sub dup /righty exch def
190 % want left edge of note at coordinate rightx
194 % stack now contains coord of bottom left corner in margin coordinates
195 matr setmatrix translate
199 % create LoutPageDict with left, right, foot, top for @Place symbol users
202 /LoutPageDict 5 dict def
204 /matr matrix currentmatrix def
218 %%IncludeResource: font Times-Roman
219 /Times-Romanfnt82 vec2 /Times-Roman LoutRecode
220 /fnt82 { /Times-Romanfnt82 LoutFont } def
221 %%IncludeResource: font Times-Bold
222 /Times-Boldfnt84 vec2 /Times-Bold LoutRecode
223 /fnt84 { /Times-Boldfnt84 LoutFont } def
224 %%IncludeResource: font Courier-Bold
225 /Courier-Boldfnt31 vec2 /Courier-Bold LoutRecode
226 /fnt31 { /Courier-Boldfnt31 LoutFont } def
227 %%IncludeResource: font Times-Italic
228 /Times-Italicfnt83 vec2 /Times-Italic LoutRecode
229 /fnt83 { /Times-Italicfnt83 LoutFont } def
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284 5424(one)s 5826(program)s 6696(to)s 6935(in)s 9(v)k 4(ok)k 2(e)k
285 7628(another)s 8405(when)s 0 10721(only)m 480(limited)s 1214(trust)s
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287 newpath 0 ysize 0.3 ft sub moveto
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309 1146(softw)s 2(are;)k 2062(you)s 2460(can)s 2832(redistrib)s 4(ute)k
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314 4699(F)s 3(oundation;)k 5894(either)s 6492(v)s 3(ersion)k
315 7245(2)s 7414(of)s 7680(the)s 8023(License,)s 8867(or)s
316 0 8515(\(at)m 311(your)s 810(option\))s 1550(an)s 3(y)k
317 1947(later)s 2430(v)s 3(ersion.)k 0 8107(This)m 476(program)s
318 1346(is)s 1556(distrib)s 4(uted)k 2632(in)s 2875(the)s
319 3223(hope)s 3745(that)s 4163(it)s 4355(will)s 4781(be)s
320 5063(useful,)s 5754(b)s 4(ut)k 240 fnt83 6116 8109(without)m
321 6898(any)s 7300(warr)s 3(anty)k 240 fnt82 8171 8107(;)m
322 8283(without)s 0 7866(e)m 6(v)k 3(en)k 500(the)s
323 848(implied)s 1636(w)s 2(arranty)k 2537(of)s 240 fnt83
324 2808 7868(mer)m 8(c)k 3(hantability)k 240 fnt82 4367 7866(or)m
325 240 fnt83 4626 7868(\207tness)m 5279(for)s 5623(a)s 5798(particular)s
326 6833(purpose)s 240 fnt82 7598 7866(.)m 7702(See)s 8103(the)s
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328 2612(more)s 3159(details.)s 0 7218(Y)m 26(ou)k 442(should)s
329 1139(ha)s 4(v)k 3(e)k 1640(re)s 1821(cei)s 6(v)k 3(ed)k
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332 5546(lic)s 5837(Li)s 6043(cense)s 6630(along)s 7215(with)s
336 240 fnt31 0 -52(userv)m
338 8197(;)s 8309(if)s 8526(not,)s
339 0 6977(write)m 546(to)s 785(the)s 1133(Free)s 1613(Soft)s
340 2011(w)s 2(are)k 2529(F)s 3(oun)k 3016(da)s
341 3242(tion,)s 3721(59)s 4012(T)s 16(em)k 4434(ple)s
342 4782(Place)s 5355(-)s 5483(Suite)s 6030(330,)s 6497(Boston,)s
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344 newpath 0 ysize 0.3 ft sub moveto
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354 1200(Client)s 1844(program)s 2714(usage)s 8952(4)s 0 5015(2.1.)m
355 1200(Options)s 8952(4)s 0 4778(2.2.)m 1200(Security-o)s 3(v)k 3(erriding)k
356 3118(options)s 8958(7)s 0 4541(3.)m 1200(Ex)s 3(ecution)k
357 2224(en)s 9(vironment)k 3484(of)s 3755(the)s 4103(service)s
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362 1200(Con\207guration)s 2587(\207le)s 2948(directi)s 6(v)k 3(es)k
363 8831(10)s 0 3128(4.3.)m 1200(Errors)s 1847(in)s 2090(the)s
364 2438(con\207guration)s 3771(\207le)s 8833(16)s 0 2890(4.4.)m 1200(Def)s 2(aults)k
365 8833(16)s 0 2663(5.)m 1200(Information)s 2398(passed)s 3094(through)s
366 3896(the)s 4244(client/daemon)s 5655(combination)s 8839(18)s 0 2425(6.)m
367 1200(Applications)s 2473(and)s 2877(notes)s 3433(on)s 3730(use)s
368 8831(20)s 0 2187(6.1.)m 1200(Examples)s 8831(20)s 0 1949(6.2.)m
369 1200(Standard)s 2108(services)s 2928(and)s 3332(directory)s 4248(management)s
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372 5636(subsystems)s 8831(20)s 0 1473(6.4.)m 1200(Do)s 1546(not)s
373 1912(gi)s 6(v)k 3(e)k 2371(a)s 3(w)k 2(ay)k
374 2925(e)s 3(xcessi)k 6(v)k 3(e)k 3885(pri)s 6(vile)k 3(ge)k
378 240 fnt31 0 -52(userv)m
380 5520(-using)s 6171(f)s 2(acilities)k
381 8831(20)s 0 52(User)m 511(service)s 1243(daemon)s 2058(and)s
382 2462(client)s 3052(speci\207cation)s 8611(1.0.1)s
392 %%PageResources: font Times-Roman
394 %%+ font Courier-Bold
396 0.0500 dup scale 10 setlinewidth
400 240 fnt82 0.0 0.0 0.0 setrgbcolor 11900 16840 0 16840 240 240 60 LoutGraphic
415 1417 -15423 translate
416 240 fnt82 0.0 0.0 0.0 setrgbcolor 9066 14006 0 14006 240 240 60 LoutGraphic
420 240 fnt84 0 13842(2)m 240 fnt82 0 13252(6.5.)m gsave
426 1760(can)s 2149(often)s 2697(replace)s gsave
432 3842(,)s 3949(b)s 4(ut)k 4311(not)s
436 240 fnt31 0 -52(really)m
438 8851(21)s 0 13014(6.6.)m 1200(Error)s
439 1763(handling)s 2654(and)s 3058(input)s 3610(streams)s 4390(\(e)s 3(g)k
440 4745(stdin\))s 8832(22)s 0 12776(6.7.)m 1200(Don')s 4(t)k
441 1814(gi)s 6(v)k 3(e)k 2273(access)s 2934(to)s
442 3173(general-purpose)s 4769(utilities)s 8832(22)s 0 52(1.0.1)m 4809(User)s
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477 1417 -15423 translate
478 240 fnt82 0.0 0.0 0.0 setrgbcolor 9066 14006 0 14006 240 240 60 LoutGraphic
482 240 fnt84 8953 13842(3)m gsave
484 240 fnt82 9066 622 0 622 240 240 60 LoutGraphic
486 newpath 0 ysize 0.3 ft sub moveto
492 340 fnt84 0 4(1.)m 412(Intr)s 6(oduction)k
495 240 fnt82 0 12330(There)m 613(is)s 823(a)s 989(daemon)s
496 1804(which)s 2446(in)s 9(v)k 4(ok)k 2(es)k
497 3227(user)s 3685(service)s 4417(programs)s 5371(\(henceforth)s 6529(`services'\))s
498 7584(in)s 7827(response)s 8720(to)s 0 12090(requests)m 822(by)s
499 1104(callers)s 1765(of)s 2024(a)s 2178(companion)s 3287(client)s
500 3865(program)s 4723(\(henceforth)s 5869(the)s 6205(`client'\))s 7009(and)s
501 7401(according)s 8385(to)s 8611(rules)s 0 11850(set)m 325(forth)s
502 846(in)s 1089(system-wide)s 2353(and)s 2757(user)s 4(-speci\207c)k
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506 4397(through)s 5199(an)s gsave
509 240 fnt31 0 -52(AF_UNIX)m
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513 409(system-wide)s 1673(pri)s 6(v)k 6(ate)k 2380(directory)s
514 3296(set)s 3621(aside)s 4168(for)s 4506(the)s 4854(purpose.)s
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589 240 fnt83 0 -52(options)m
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632 0 10966(numeric)m 836(uid,)s 1249(or)s gsave
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639 4217(user)s 4675(is)s 4885(to)s 5124(be)s 5406(the)s
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643 240 fnt82 4311 10558(daemon)m 5126(on)s 5423(behalf)s 6092(of)s
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1439 876(option)s 1545(is)s 1755(encountered;)s 3036(this)s 3432(option)s
1440 4101(is)s 4311(o)s 3(v)k 3(erridden)k 5398(by)s
1441 5692(an)s 3(y)k 6089(later)s gsave
1442 6572 13065 translate
1444 240 fnt31 0 -52(\211\211file)m
1448 7491 13065 translate
1450 240 fnt31 0 -52(\211\211fdwait)m
1452 8352(option)s 480 12771(-)m
1453 608(e)s 6(v)k 3(en)k 1108(by)s 1402(a)s
1455 1568 12825 translate
1457 240 fnt31 0 -52(\211\211file)m
1459 2228(which)s 2870(does)s 3360(not)s
1460 3726(specify)s 4470(an)s 4753(action)s 5394(on)s 5691(termination)s
1461 6849(\(in)s 7171(this)s 7567(case)s 8034(the)s 8382(def)s 2(ault)k
1462 480 12531(will)m 906(be)s 1188(used,)s 1734(as)s 1984(described)s
1463 2958(abo)s 3(v)k 3(e\).)k gsave
1466 240 fnt31 0 -52(\211D)m
1470 240 fnt83 0 -52(name)m
1475 240 fnt83 0 -52(value)m
1483 240 fnt31 0 -52(\211\211defvar)m gsave
1486 240 fnt83 0 -52(name)m
1492 240 fnt83 0 -52(value)m
1496 480 11667(Set)m 845(a)s 1011(user)s 4(-)k
1497 1473(de\207ned)s 2236(v)s 6(ari)k 2595(able)s 240 fnt83
1498 3049 11669(name)m 240 fnt82 3621 11667(to)m 240 fnt83 3860 11669(val)m
1499 4152(ue)s 240 fnt82 4371 11667(.)m 4475(These)s 5102(user)s 4(-)k
1500 5564(de\207ned)s 6327(v)s 6(ari)k 6686(ables)s 7228(are)s
1501 7575(made)s 8149(a)s 4(v)k 6(ail)k 8598(able)s
1502 480 11427(in)m 723(the)s 1071(con)s 1414(\207g)s 1660(u)s
1503 1775(ra)s 1960(tion)s 2389(lan)s 2678(guage)s 3306(as)s
1504 3556(the)s 3904(pa)s 4130(ram)s 4501(e)s 4603(ters)s
1506 4998 11481 translate
1508 240 fnt31 0 -52(u\211)m gsave
1511 240 fnt83 0 -52(name)m
1516 6168(are)s 6515(passed)s 7211(to)s 7450(the)s 7798(ser)s
1517 8076(vice)s 8530(in)s 8773(en)s 8996(-)s 480 11187(vi)m
1518 660(ron)s 976(ment)s 1508(v)s 6(ari)k 1867(ables)s
1520 2402 11241 translate
1522 240 fnt31 0 -52(USERV_U_)m gsave
1525 240 fnt83 0 -52(name)m
1530 240 fnt83 3806 11189(name)m 240 fnt82 4371 11187(may)m 4831(con)s
1531 5174(tain)s 5582(only)s 6055(al)s 6222(phanu)s 6803(mer)s
1532 7174(ics)s 7483(and)s 7880(un)s 8117(der)s 8422(scores,)s
1533 480 10947(and)m 884(must)s 1409(start)s 1879(with)s 2360(a)s
1534 2526(let)s 2764(ter)s 13(.)k 3106(If)s 3335(se)s 6(v)k
1535 3643(er)s 3828(al)s 4055(de\207)s 4406(ni)s 4586(tions)s
1536 5102(are)s 5449(gi)s 6(v)k 5744(en)s 6026(for)s
1537 6364(the)s 6712(same)s 240 fnt83 7258 10949(name)m 240 fnt82
1538 7830 10947(then)m 8299(only)s 8778(the)s 480 10707(last)m 871(is)s
1539 1081(ef)s 1278(fec)s 1562(ti)s 6(v)k 3(e.)k
1543 240 fnt31 0 -52(\211t)m gsave
1546 240 fnt83 0 -52(seconds)m
1554 0 -52(\211\211timeout)m gsave
1557 240 fnt83 0 -52(seconds)m
1561 480 9882(T)m 8(ime)k
1562 1029(out)s 1392(the)s 1736(service)s 2465(if)s 2678(it)s
1563 2867(tak)s 2(es)k 3403(longer)s 4071(than)s 240 fnt83
1564 4536 9884(seconds)m 240 fnt82 5346 9882(seconds)m 6151(\(a)s 6393(positi)s 6(v)k 3(e)k
1565 7193(inte)s 3(ger)k 9(,)k 7948(in)s 8187(decimal\).)s
1566 480 9641(T)m 8(imeout)k 1331(will)s 1746(produce)s 2562(a)s
1567 2717(diagnostic)s 3742(on)s 4028(stderr)s 4620(and)s 5013(an)s
1568 5284(e)s 3(xit)k 5688(status)s 6272(of)s 6532(255.)s
1569 6985(If)s 240 fnt83 7204 9643(seconds)m 240 fnt82 8006 9641(is)m
1570 8205(zero)s 8657(then)s 480 9401(no)m 773(timeout)s 1563(will)s
1571 1989(be)s 2271(implemented)s 3577(\(this)s 4052(is)s 4262(the)s
1572 4610(def)s 2(ault\).)k gsave
1575 240 fnt31 0 -52(\211S)m
1578 380 9009(method)m gsave
1581 240 fnt31 0 -52(\211\211signals)m
1583 1081 8769(method)m 240 fnt82
1584 480 8527(Af)m 6(fects)k 1212(the)s 1544(handling)s 2420(of)s
1585 2675(the)s 3008(e)s 3(xit)k 3407(status)s 3987(when)s
1586 4547(the)s 4879(service)s 5596(terminates)s 6625(due)s 7012(to)s
1587 7235(a)s 7386(signal.)s 8045(\(The)s 8536(client)s 480 8286(will)m
1588 906(al)s 2(w)k 2(ays)k 1617(\207nish)s 2206(by)s
1589 2500(calling)s gsave
1592 240 fnt31 0 -52(_exit)m
1595 4076(that)s 4494(only)s 4974(numbers)s 5849(from)s 6373(0)s
1596 6548(to)s 6787(255)s 7193(can)s 7582(be)s 7864(returned)s
1597 8718(and)s 480 8046(not)m 830(the)s 1162(full)s 1532(range)s
1598 2102(of)s 2357(numbers)s 3216(and)s 3603(signal)s 4213(indications)s
1599 5297(which)s 5922(can)s 6295(be)s 6561(returned)s 7398(by)s
1603 240 fnt31 0 -52(wait)m
1606 480 7805(of)m 751(system)s 1475(calls.\))s 2160(The)s 240 fnt83
1607 2588 7807(method)m 240 fnt82 3359 7805(may)m 3825(be)s 4107(one)s
1608 4509(of)s 4780(the)s 5128(follo)s 6(wing:)k 240 fnt83
1609 600 7567(status)m 240 fnt82 960 7325(The)m 1386(client')s 13(s)k
1610 2123(e)s 3(xit)k 2536(status)s 3128(will)s 3552(be)s
1611 240 fnt83 3831 7327(status)m 240 fnt82 4384 7325(.)m 4486(This)s
1612 4959(will)s 5383(not)s 5746(be)s 6026(distinguishable)s 7527(from)s
1613 8049(the)s 8394(service)s 960 7084(really)m 1557(ha)s 4(ving)k
1614 2258(e)s 3(xited)k 2897(with)s 3379(code)s 240 fnt83
1615 3887 7086(status)m 240 fnt82 4440 7084(.)m 4544(This)s 5020(method)s
1616 5796(is)s 6006(the)s 6354(def)s 2(ault,)k 7122(with)s
1617 7604(a)s 240 fnt83 7770 7086(status)m 240 fnt82 8383 7084(of)m
1621 240 fnt31 0 -52(number)m
1626 240 fnt31 0 -52(number\211nocore)m
1629 960 6364(The)m 1388(client')s 13(s)k 2128(e)s 3(xit)k
1630 2543(status)s 3138(will)s 3564(be)s 3846(the)s 4194(number)s
1631 4985(of)s 5256(the)s 5604(signal)s 6230(which)s 6872(caused)s
1632 7581(the)s 7929(termination)s 960 6124(of)m 1231(the)s 1579(service.)s
1636 240 fnt31 0 -52(number)m
1638 3249(is)s 3459(used)s
1639 3956(rather)s 4572(than)s gsave
1642 240 fnt31 0 -52(number\211nocore)m
1645 6871(128)s 7278(will)s 7704(be)s 7986(added)s 960 5884(if)m
1646 1177(the)s 1525(service)s 2257(dumped)s 3087(core.)s gsave
1652 4262(is)s 4472(v)s 3(ery)k 4948(lik)s 2(e)k
1653 5360(the)s 5708(e)s 3(xit)k 6123(code)s 6631(mangling)s
1654 7588(done)s 8110(by)s 8404(the)s 960 5644(Bourne)m 1721(shell.)s
1658 240 fnt31 0 -52(highbit)m
1660 960 5164(The)m 1388(client')s 13(s)k
1661 2128(e)s 3(xit)k 2543(status)s 3138(will)s 3564(be)s
1662 3846(the)s 4194(number)s 4985(of)s 5256(the)s 5604(signal)s
1663 6230(with)s 6712(128)s 7119(added.)s 7795(If)s 8025(the)s
1664 8373(service)s 960 4924(e)m 3(xits)k 1459(normally)s 2376(with)s
1665 2858(an)s 3141(e)s 3(xit)k 3556(code)s 4064(of)s
1666 4335(greater)s 5057(than)s 5526(127)s 5934(then)s 6403(127)s
1667 6811(will)s 7237(be)s 7519(returned.)s gsave
1670 240 fnt31 0 -52(stdout)m
1673 960 4444(The)m 1375(service')s 13(s)k 2247(numeric)s 3069(w)s 2(ait)k
1674 3524(status)s 4105(as)s 4341(tw)s 2(o)k 4737(decimal)s
1675 5534(numbers)s 6395(\(high)s 6943(byte)s 7397(\207rst\))s 7882(and)s
1676 8272(a)s 8424(te)s 3(xtual)k 960 4204(description)m 2079(of)s
1677 2350(its)s 2626(meaning)s 3503(will)s 3929(be)s 4211(printed)s
1678 4946(to)s 5185(the)s 5533(client')s 13(s)k 6273(standard)s
1679 7141(output.)s 7857(It)s 8062(will)s 8488(be)s 960 3964(preceded)m
1680 1865(by)s 2142(a)s 2292(ne)s 6(wline)k 3082(and)s
1681 3470(follo)s 6(wed)k 4355(by)s 4633(an)s 4899(e)s 3(xtra)k
1682 5417(ne)s 6(wline,)k 6258(and)s 6646(the)s 6977(numbers)s
1683 7836(are)s 8166(separated)s 960 3724(from)m 1484(each)s 1979(other)s
1684 2530(and)s 2934(from)s 3458(the)s 3806(te)s 3(xtual)k
1685 4508(description)s 5627(by)s 5921(single)s 6548(spaces.)s 7276(The)s
1686 7704(e)s 3(xit)k 8119(status)s 8714(of)s 960 3484(the)m
1687 1308(client)s 1898(will)s 2324(be)s 2606(zero,)s 3124(unless)s
1688 3773(a)s 3939(system)s 4663(error)s 5186(occurs)s 5861(in)s
1689 6104(which)s 6746(case)s 7213(no)s 7506(e)s 3(xit)k
1690 7921(status)s 8516(and)s 960 3244(description)m 2079(will)s 2505(be)s
1691 2787(printed)s 3522(to)s 3761(stdout,)s 4453(and)s 4857(an)s
1692 5140(error)s 5663(message)s 6529(will)s 6955(be)s 7237(printed)s
1693 7972(to)s 8211(stderr)s 960 3004(as)m 1210(usual.)s 480 2791(Problems)m
1694 1420(such)s 1902(as)s 2137(client)s 2713(usage)s 3299(errors,)s
1695 3948(the)s 4281(service)s 4999(not)s 5351(being)s 5921(found)s
1696 6524(or)s 6768(permission)s 7860(being)s 8430(denied)s 480 2551(or)m
1697 739(f)s 2(ailure)k 1415(of)s 1686(a)s 1852(system)s
1698 2576(call)s 2975(are)s 3322(system)s 4046(errors.)s 4706(An)s
1699 5056(error)s 5579(message)s 6445(describing)s 7494(the)s 7842(problem)s
1700 8699(will)s 480 2310(be)m 758(printed)s 1489(on)s 1782(the)s
1701 2125(client')s 13(s)k 2861(stderr)s 9(,)k 3498(and)s
1702 3898(the)s 4241(client')s 13(s)k 4977(e)s 3(xit)k
1703 5388(status)s 5978(will)s 6400(be)s 6678(255.)s 7138(If)s
1704 7363(the)s 7707(client)s 8293(dies)s 8724(due)s 480 2070(to)m
1705 719(a)s 885(signal)s 1511(this)s 1907(should)s 2604(be)s
1706 2886(treated)s 3593(as)s 3843(a)s 4009(serious)s 4737(system)s
1707 5461(error)s 13(.)k gsave
1710 240 fnt31 0 -52(\211H)m
1716 0 -52(\211\211hidecwd)m
1718 480 1196(Pre)m 6(v)k 3(ents)k 1345(the)s
1719 1693(calling)s 2396(process')s 13(s)k 3323(current)s 4059(directory)s
1720 4975(name)s 5549(from)s 6073(being)s 6658(passed)s 7354(to)s
1721 7593(the)s 7941(service;)s 8729(the)s 480 956(null)m 907(string)s
1722 1504(will)s 1930(be)s 2212(passed)s 2908(instead.)s 0 52(1.0.1)m
1723 4809(User)s 5320(service)s 6052(daemon)s 6867(and)s 7271(client)s
1724 7861(speci\207cation)s
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1763 240 fnt84 8951 13844(7)m gsave
1766 240 fnt31 0 -52(\211P)m
1772 0 -52(\211\211sigpipe)m
1774 240 fnt82 480 12803(If)m 700(the)s 1038(service)s
1775 1760(program)s 2620(is)s 2820(terminated)s 3888(due)s 4280(to)s
1777 4665 12857 translate
1779 240 fnt31 0 -52(SIGPIPE)m
1781 5415(the)s 5753(e)s 3(xit)k
1782 6157(status)s 6742(of)s 7003(the)s 7341(client)s 7921(will)s
1783 8337(be)s 8608(zero,)s 480 12563(e)m 6(v)k 3(en)k
1784 967(if)s 1170(it)s 1349(w)s 2(ould)k 1990(ha)s 4(v)k 3(e)k
1785 2477(been)s 2973(something)s 4009(else)s 4423(according)s 5405(to)s
1786 5630(the)s 5965(e)s 3(xit)k 6366(status)s 6948(method)s
1787 7710(speci\207ed.)s 8650(This)s 480 12323(option)m 1149(has)s 1519(no)s
1788 1812(ef)s 6(fect)k 2408(on)s 2705(the)s 3053(code)s
1789 3561(and)s 3965(description)s 5084(printed)s 5819(if)s 6036(the)s
1790 6384(e)s 3(xit)k 6799(status)s 7394(method)s gsave
1791 8170 12377 translate
1796 8830(is)s 480 12083(in)m 723(use.)s gsave
1805 240 fnt31 0 -52(\211\211help)m
1810 240 fnt31 0 -52(\211\211copyright)m
1816 240 fnt31 0 -52(\211h)m
1818 740 11019(or)m gsave
1821 240 fnt31 0 -52(\211\211help)m
1824 1659(prints)s 2254(the)s 2602(client')s 13(s)k 3342(usage)s
1825 3943(message;)s gsave
1826 4865 11073 translate
1828 240 fnt31 0 -52(\211\211copyright)m
1830 6026(prints)s 6621(the)s
1831 6969(cop)s 2(yright)k 7944(and)s 8348(lack)s 8807(of)s
1832 480 10779(w)m 2(arranty)k 1381(notice.)s 9066 670 0 670 240 240 60 0 9649 LoutGr2
1833 newpath 0 ysize 0.3 ft sub moveto
1839 320 fnt84 0 66(2.2.)m
1840 628(Security-o)s 3(v)k 3(erriding)k 3373(options)s
1843 613(are)s 960(also)s 1398(some)s 1959(options)s 2715(which)s
1844 3357(are)s 3704(a)s 4(v)k 6(ailable)k 4612(for)s
1845 4950(deb)s 4(ugging)k 6011(and)s 6415(to)s 6654(allo)s 6(w)k
1846 7233(the)s 7581(system)s 0 8947(administrator)m 1333(to)s 1572(o)s 3(v)k 3(erride)k
1847 2418(a)s 2584(user')s 13(s)k 3192(polic)s 3(y)k 15(.)k
1848 3876(These)s 4503(options)s 5259(are)s 5606(a)s 4(v)k 6(ailable)k
1849 6514(only)s 6994(if)s 7211(the)s 7559(client)s 8149(is)s
1850 8359(called)s 0 8707(by)m 294(root)s 739(or)s 998(if)s
1851 1215(the)s 1563(calling)s 2266(user)s 2724(is)s 2934(the)s
1852 3282(same)s 3829(as)s 4079(the)s 4427(service)s 5159(user)s 13(.)k
1856 240 fnt31 0 -52(\211\211override)m gsave
1859 240 fnt83 0 -52(con\207gur)m 3(ation\211data)k
1867 240 fnt31 0 -52(\211\211override\211file)m gsave
1870 240 fnt83 0 -52(\207lename)m
1875 826(not)s 1192(read)s 1661(the)s 2009(usual)s 2569(con\207guration)s
1876 3902(\207les.)s 4404(Instead,)s 5201(the)s 5549(client)s 6139(sends)s
1877 240 fnt83 6722 7821(con\207gur)m 3(ation-data)k 240 fnt82 480 7578(\(follo)m 6(wed)k
1878 1461(by)s 1755(a)s 1921(ne)s 6(wline\))k 2800(or)s
1879 3059(the)s 3407(contents)s 4255(of)s 240 fnt83 4526 7580(\207lename)m
1880 240 fnt82 5390 7578(\(which)m 6111(is)s 6321(opened)s 7071(in)s
1881 7314(the)s 7662(conte)s 3(xt)k 8423(of)s 8694(the)s
1882 480 7337(client\))m 1138(to)s 1377(the)s 1725(daemon)s 2540(and)s
1883 2944(the)s 3292(daemon)s 4107(uses)s 4570(that)s 4988(data)s
1884 5446(instead.)s 6227(The)s 240 fnt83 6655 7339(con\207gur)m 3(ation-data)k
1885 240 fnt82 8503 7337(must)m 480 7097(all)m 772(be)s 1052(in)s
1886 1293(one)s 1693(ar)s 4(gument.)k 2694(It)s 2897(will)s
1887 3321(ha)s 4(v)k 3(e)k 3820(a)s 3984(single)s
1888 4609(ne)s 6(wline)k 5414(appended)s 6388(so)s 6652(that)s
1889 7068(a)s 7232(single)s 7857(directi)s 6(v)k 3(e)k
1890 8737(can)s 480 6857(easily)m 1083(be)s 1357(gi)s 6(v)k 3(en,)k
1891 1979(b)s 4(ut)k 2333(if)s 2542(more)s 3080(than)s
1892 3541(one)s 3935(directi)s 6(v)k 3(e)k 4809(is)s
1893 5011(required)s 5857(it)s 6040(will)s 6458(ha)s 4(v)k 3(e)k
1894 6951(to)s 7182(contain)s 7935(one)s 8329(or)s 8579(more)s
1895 480 6617(real)m 892(ne)s 6(wlines.)k gsave
1898 240 fnt31 0 -52(\211\211spoof\211user)m
1902 240 fnt83 0 -52(user)m
1906 480 6032(Pretend)m 1268(to)s 1507(the)s
1907 1855(service)s 2587(that)s 3005(it)s 3197(is)s 3407(being)s
1908 3992(called)s 4620(by)s 240 fnt83 4914 6034(user)m 240 fnt82
1909 5391 6032(\(which)m 6112(may)s 6578(be)s 6860(a)s 7026(username)s
1910 7998(or)s 8257(a)s 8423(uid\).)s 480 5792(This)m 956(will)s
1911 1382(also)s 1820(af)s 6(fect)k 2416(the)s 2764(group)s
1912 3376(and)s 3780(supplementary)s 5242(groups)s 5945(supplied)s 6814(to)s
1913 7053(the)s 7401(service;)s 8189(the)s 3(y)k 8652(will)s
1914 480 5552(be)m 759(the)s 1103(standard)s 1968(group)s 2576(and)s
1915 2977(supplementary)s 4435(groups)s 5135(for)s 240 fnt83 5469 5554(user)m
1916 240 fnt82 5886 5552(.)m 5987(The)s gsave
1919 240 fnt31 0 -52(\211\211spoof\211user)m
1922 7669(option)s 8334(will)s 240 fnt83 8756 5554(not)m 240 fnt82
1923 480 5312(af)m 6(fect)k 1076(which)s 1718(user)s 2176(is)s
1924 2386(chosen)s 3108(if)s 3325(the)s 3673(service)s 4405(user)s
1925 4863(is)s 5073(speci\207ed)s 5981(as)s 6231(just)s gsave
1931 6736(;)s 6848(in)s 7091(this)s 7487(case)s
1932 7954(the)s 8302(service)s 480 5072(user)m 938(will)s 1364(be)s
1933 1646(the)s 1994(real)s 2406(calling)s 3109(user)s 13(.)k
1934 0 52(User)m 511(service)s 1243(daemon)s 2058(and)s 2462(client)s
1935 3052(speci\207cation)s 8611(1.0.1)s
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1973 240 fnt84 0 13842(8)m gsave
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1977 newpath 0 ysize 0.3 ft sub moveto
1983 340 fnt84 0 70(3.)m 412(Execution)s
1984 1943(en)s 13(vir)k 6(onment)k 3856(of)s 4243(the)s
1985 4774(ser)s 3(vice)k 5846(pr)s 6(ogram)k
1988 0 12264(The)m 428(daemon)s 1243(which)s 1885(is)s 2095(handling)s
1989 2986(the)s 3334(service)s 4066(user)s 4524(side)s 4965(of)s
1990 5236(things)s 5872(will)s 6298(read)s 6767(con\207guration)s 8100(\207les)s
1991 8549(to)s 0 12024(decide)m 680(what)s 1205(to)s 1444(do.)s
1992 1788(If)s 2018(it)s 2210(decides)s 2978(to)s 3217(allo)s 6(w)k
1993 3796(the)s 4144(service)s 4876(to)s 5115(be)s 5397(pro)s 3(vided)k
1994 6303(it)s 6495(will)s 6921(fork)s 7380(a)s 7546(subprocess)s
1995 8647(to)s 0 11784(e)m 3(x)k 3(ecute)k 780(the)s
1996 1128(service.)s 0 11376(The)m 428(service)s 1160(will)s 1586(ha)s 4(v)k 3(e)k
1997 2087(no)s 2380(controlling)s 3482(terminal,)s 4384(b)s 4(ut)k
1998 4746(it)s 4938(will)s 5364(be)s 5646(a)s 5812(process)s
1999 6580(group)s 7192(leader)s 13(.)k 0 10968(If)m 223(the)s
2000 563(client)s 1146(is)s 1348(killed)s 1942(or)s 2194(times)s
2001 2754(out)s 3112(or)s 3364(a)s 3522(\207le)s 3875(or)s
2002 4127(descriptor)s 5134(being)s 5711(read)s 6173(or)s 6424(written)s
2003 7149(by)s 7436(the)s 7776(client)s 8358(process)s 0 10728(gets)m
2004 436(an)s 719(error)s 1242(then)s 1711(the)s 2059(service)s
2005 2791(will)s 3217(be)s 3499(disconnected)s 4806(from)s 5330(the)s
2006 5678(client.)s 6312(The)s 6740(client)s 7330(will)s 7756(return)s
2007 8383(an)s 0 10487(e)m 3(xit)k 415(status)s 1010(of)s
2008 1281(255)s 1687(and)s 2091(some)s 2652(the)s 3000(service')s 13(s)k
2009 3886(pipes)s 4442(may)s 4908(be)s 5190(closed)s 5859(at)s
2010 6091(the)s 6439(other)s 6990(end.)s 7440(The)s 7868(service)s
2011 8600(will)s 0 10247(become)m 800(a)s 966(child)s 1502(of)s
2013 1773 10301 translate
2015 240 fnt31 0 -52(init)m
2017 2173(.)s 2277(The)s 2705(service)s
2018 3437(may)s 3903(well)s 4369(not)s 4735(notice)s 5375(the)s
2019 5723(disconnection,)s 7159(though)s 7882(writing)s 8625(to)s 8864(a)s
2020 0 10007(pipe)m 468(after)s 964(this)s 1360(may)s 1826(produce)s
2022 2819 10061 translate
2024 240 fnt31 0 -52(SIGPIPE)m
2026 3579(and)s 3983(the)s
2027 4331(f)s 2(acility)k 5058(e)s 3(xists)k 5650(to)s
2028 5889(ha)s 4(v)k 3(e)k 6390(a)s gsave
2029 6556 10061 translate
2034 7216(sent)s 7661(to)s 7900(the)s 8248(service)s
2035 0 9767(on)m 297(disconnection.)s 9066 670 0 670 240 240 60 0 8743 LoutGr2
2036 newpath 0 ysize 0.3 ft sub moveto
2042 320 fnt84 0 66(3.1.)m 628(File)s
2045 0 8281(The)m 428(service)s 1160(program')s 13(s)k
2046 2180(standard)s 3048(\207ledescriptors,)s 4508(and)s 4912(possibly)s 5764(other)s
2047 6315(\207le)s 6676(descriptors,)s 7831(will)s 8257(be)s 0 8041(connected)m
2048 1028(to)s 1266(pipes)s 1821(or)s 2080(to)s gsave
2054 3219(.)s 3322(The)s gsave
2057 240 fnt31 0 -52(userv)m
2060 4309(client/daemon)s 5719(pair)s 6150(will)s 6575(arrange)s 7346(that)s
2061 7764(data)s 8221(is)s 8430(copied)s 0 7801(between)m 854(the)s
2062 1202(\207les)s 1651(or)s 1910(\207le)s 2271(descriptors)s 3370(speci\207ed)s
2063 4278(to)s 4517(to)s 4756(the)s 5104(client)s 5694(by)s
2064 5988(the)s 6336(caller)s 6925(and)s 7329(these)s 7876(these)s
2065 8423(pipes.)s 0 7393(Pipes)m 569(which)s 1211(may)s 1677(be)s
2066 1959(written)s 2692(to)s 2931(will)s 3357(be)s 3639(closed)s
2067 4308(if)s 4525(a)s 4691(write)s 5237(error)s 5760(occurs)s
2068 6435(on)s 6732(the)s 7080(corresponding)s 0 7153(client-side)m 1043(\207le)s
2069 1396(or)s 1647(descriptor)s 9(,)k 2692(which)s 3326(may)s
2070 3784(result)s 4366(in)s 4601(a)s gsave
2073 240 fnt31 0 -52(SIGPIPE)m
2076 5512(in)s 5747(the)s 6087(service)s 6811(program;)s 7725(pipes)s
2077 8273(open)s 8788(for)s 0 6913(reading)m 770(will)s 1196(get)s
2081 240 fnt31 0 -52(EOF)m
2083 1908(if)s 2125(the)s 2473(client-side)s
2084 3523(\207le)s 3884(descriptor)s 4899(gets)s gsave
2087 240 fnt31 0 -52(EOF)m
2090 5695(or)s 5954(an)s 6237(error)s 13(.)k 0 6505(If)m
2091 230(the)s 578(service)s 1310(closes)s 1945(one)s 2347(of)s
2092 2618(its)s 2894(reading)s 3663(\207le)s 4024(descriptors)s 5123(the)s
2093 5471(writing)s 6214(end)s 6618(of)s 6889(the)s 7237(corresponding)s
2094 8658(pipe)s 0 6265(will)m 421(generate)s 1280(a)s gsave
2100 2195(when)s 2766(attempts)s 3620(are)s 3962(made)s
2101 4530(by)s 4819(the)s 5161(client/daemon)s 6567(pair)s 6992(to)s
2102 7226(write)s 7766(to)s 8000(it.)s 8230(This)s 8700(will)s
2103 0 6025(not)m 366(be)s 648(considered)s 1742(an)s 2025(error;)s
2104 2600(rather)s 9(,)k 3254(the)s 3602(rele)s 6(v)k 6(ant)k
2105 4419(pipe)s 4887(will)s 5313(be)s 5595(discarded)s 6569(and)s
2106 6973(the)s 7321(corresponding)s 8743(\207le)s 0 5785(or)m 259(\207le)s
2107 620(descriptor)s 1635(held)s 2105(by)s 2399(the)s 2747(client)s
2108 3337(will)s 3763(be)s 4045(closed.)s 0 5377(Lik)m 2(e)k 6(wise,)k
2109 975(if)s 1192(one)s 1594(of)s 1865(the)s 2213(\207le)s
2110 2574(descriptors)s 3673(held)s 4143(by)s 4437(the)s 4785(client)s
2111 5375(for)s 5713(writing)s 6456(by)s 6750(the)s 7098(service)s
2112 7830(is)s 8040(a)s 8206(pipe)s 0 5137(whose)m 665(other)s
2113 1213(end)s 1613(is)s 1820(closed)s 2485(by)s 2776(the)s
2114 3120(caller)s 3706(then)s 4171(the)s 4516(client/daemon)s 5923(pair)s
2115 6351(will)s 6773(see)s 7131(an)s 7410(error)s 7930(when)s
2116 8502(trying)s 0 4897(to)m 239(cop)s 2(y)k 757(data)s
2117 1215(pro)s 3(vided)k 2121(by)s 2415(the)s 2763(service.)s
2118 3543(This)s 4019(too)s 4378(will)s 4804(not)s 5170(be)s
2119 5452(considered)s 6546(an)s 6829(error;)s 7404(rather)s 9(,)k
2120 8058(the)s 8406(pipe)s 0 4657(correspondong)m 1476(to)s 1715(that)s
2121 2133(descriptor)s 3148(will)s 3574(be)s 3856(closed)s 4525(and)s
2122 4929(an)s 3(y)k 5326(further)s 6035(writes)s 6669(will)s
2123 7095(cause)s 7682(the)s 8030(service)s 8762(to)s 0 4417(get)m
2127 240 fnt31 0 -52(SIGPIPE)m
2129 1218(.)s 0 4009(Note)m
2130 521(that)s 939(not)s 1305(all)s 1598(write)s 2144(errors)s
2131 2751(or)s 3010(brok)s 2(en)k 3730(pipes)s 4286(on)s
2132 4583(\207le)s 4944(descriptors)s 6043(may)s 6509(be)s 6791(visible)s
2133 7484(to)s 7723(the)s 8071(service,)s 0 3769(since)m 547(b)s 4(uf)k 6(fered)k
2134 1404(data)s 1862(may)s 2328(be)s 2610(discarded)s 3584(by)s
2135 3878(the)s 4226(operating)s 5182(system)s 5906(and)s 6310(there)s
2136 6843(will)s 7269(be)s 7551(a)s 7717(\207nite)s 8264(interv)s 6(al)k
2137 0 3529(between)m 847(the)s 1188(error)s 1703(happening)s 2747(and)s
2138 3144(the)s 3484(service)s 4209(being)s 4787(disconnected)s 6086(from)s
2139 6603(the)s 6944(client)s 7526(or)s 7778(the)s 8119(ne)s 3(xt)k
2140 8580(write)s 0 3289(causing)m 784(a)s gsave
2143 240 fnt31 0 -52(SIGPIPE)m
2146 1650(.)s 0 2881(Read)m 550(errors)s 1157(on)s 1454(\207le)s
2147 1815(descriptors)s 2914(\(and)s 3397(disconnection\))s 4854(will)s 5280(only)s
2148 5760(be)s 6042(visible)s 6735(to)s 6974(the)s 7322(service)s
2149 8054(and)s 0 2641(distinguishable)m 1504(from)s 2028(normal)s 2760(end)s
2150 3164(of)s 3435(\207le)s 3796(if)s gsave
2153 240 fnt31 0 -52(disconnect\211hup)m
2156 5474(is)s 5684(in)s 5927(ef)s 6(fect.)k 0 2233(Read)m
2157 549(and)s 951(write)s 1495(errors)s 2100(\(other)s 2728(than)s
2158 3196(brok)s 2(en)k 3914(pipes,)s 4524(as)s 4772(described)s
2159 5744(abo)s 3(v)k 3(e\))k 6437(will)s 6861(al)s 2(w)k 2(ays)k
2160 7570(be)s 7850(visible)s 8541(to)s 8778(the)s 0 1993(caller;)m
2161 627(the)s 3(y)k 1075(are)s 1408(system)s 2117(errors,)s
2162 2766(and)s 3155(will)s 3566(therefore)s 4469(cause)s 5041(the)s
2163 5375(client)s 5950(to)s 6174(print)s 6671(an)s 6939(error)s
2164 7448(message)s 8299(to)s 8523(stderr)s 0 1752(and)m 404(return)s
2165 1031(with)s 1513(an)s 1796(e)s 3(xit)k 2211(status)s
2166 2806(of)s 3077(255.)s 0 1344(If)m 230(the)s 578(main)s
2167 1113(service)s 1845(program)s 2715(process)s 3483(e)s 3(xits)k
2168 3982(while)s 4569(it)s 4761(still)s 5173(has)s 5543(running)s
2169 6341(children)s 7181(an)s 3(y)k 7578(\207le)s 7939(descriptors)s
2170 0 1104(held)m 470(by)s 764(those)s 1325(children)s 2165(can)s
2171 2554(remain)s 3274(open,)s 3847(depending)s 4898(on)s 5195(the)s
2172 5543(use)s 5918(of)s gsave
2175 240 fnt31 0 -52(wait)m
2181 240 fnt31 0 -52(nowait)m
2186 240 fnt31 0 -52(close)m
2189 8175(for)s 8513(the)s 0 864(rele)m 6(v)k 6(ant)k
2190 817(\207le)s 1178(descriptor)s 2193(in)s 2436(the)s 2784(client')s 13(s)k
2191 3524(ar)s 4(guments.)k 4620(By)s 4954(def)s 2(ault)k
2192 5675(writing)s 6418(\207ledescriptors)s 7822(remain)s 8542(open)s 0 52(1.0.1)m
2193 4809(User)s 5320(service)s 6052(daemon)s 6867(and)s 7271(client)s
2194 7861(speci\207cation)s
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2233 240 fnt84 8952 13842(9)m 240 fnt82 0 13251(and)m 404(the)s
2234 752(client)s 1342(will)s 1768(w)s 2(ait)k 2237(for)s
2235 2575(them)s 3113(to)s 3352(be)s 3634(closed)s 4303(at)s
2236 4535(the)s 4883(service)s 5615(end,)s 6068(and)s 6472(reading)s
2237 7242(\207le)s 7603(descriptors)s 8702(are)s 0 13011(closed)m 669(immediately)s 15(.)k
2238 1952(These)s 2579(lefto)s 3(v)k 3(er)k 3375(child)s
2239 3911(processes)s 4878(will)s 5304(not)s 5670(get)s 6022(a)s
2240 6188(an)s 3(y)k gsave
2241 6585 13065 translate
2243 240 fnt31 0 -52(SIGHUP)m
2245 7245(e)s 6(v)k 3(en)k
2246 7745(if)s 7962(a)s 8128(read)s 8597(or)s 0 12771(write)m
2247 546(error)s 1069(occurs)s 1744(or)s 2003(the)s 2351(client)s
2248 2941(disconnects)s 4108(before)s 4774(then.)s 9066 609 0 609 240 240 60 0 11808 LoutGr2
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2255 320 fnt84 0 5(3.2.)m
2256 628(En)s 12(vir)k 5(onment)k
2258 0 11346(The)m 428(service)s
2259 1160(will)s 1586(ha)s 4(v)k 3(e)k 2087(some)s
2260 2648(information)s 3833(in)s 4076(en)s 9(vironment)k 5336(v)s 6(ariables:)k
2264 240 fnt31 0 -52(USERV_USER)m
2266 480 10866(The)m 908(login)s 1457(name)s
2267 2031(of)s 2302(the)s 2650(calling)s 3353(user)s 13(.)k
2268 3842(If)s 4072(the)s gsave
2269 4420 10920 translate
2271 240 fnt31 0 -52(LOGNAME)m
2273 5180(v)s 6(ariable)k
2274 5999(is)s 6209(set)s 6534(\(or)s 9(,)k 6910(if)s
2275 7127(that)s 7545(is)s 7755(unset,)s 8367(if)s 8584(the)s
2279 240 fnt31 0 -52(USER)m
2281 940 10626(v)m 6(ariable)k 1759(is)s
2282 1969(set\))s 2362(in)s 2605(the)s 2953(en)s 9(vironment)k
2283 4213(passed)s 4909(to)s 5148(the)s 5496(client)s 6086(by)s
2284 6380(the)s 6728(caller)s 7317(then)s 7786(the)s 8134(passw)s 2(ord)k
2285 480 10386(entry)m 1025(for)s 1363(that)s 1781(login)s 2330(name)s
2286 2904(will)s 3330(be)s 3612(look)s 2(ed)k 4320(up;)s
2287 4672(if)s 4889(that)s 5307(passw)s 2(ord)k 6267(entry')s 13(s)k
2288 6968(uid)s 7332(is)s 7542(the)s 7890(same)s 8437(as)s
2289 8687(that)s 480 10146(of)m 745(the)s 1086(calling)s 1782(process)s
2290 2543(then)s 3005(that)s 3416(login)s 3958(name)s 4525(will)s
2291 4945(be)s 5220(used,)s 5759(otherwise)s 6737(\(or)s 7068(if)s
2292 7278(neither)s gsave
2293 7994 10200 translate
2295 240 fnt31 0 -52(LOGNAME)m
2303 938 9906(is)m 1146(set\))s 1537(the)s 1883(calling)s
2304 2583(process')s 13(s)k 3508(uid)s 3870(will)s 4294(be)s
2305 4573(look)s 2(ed)k 5279(up)s 5570(to)s 5807(determine)s
2306 6815(their)s 7310(login)s 7857(name)s 8429(\(and)s 8909(if)s
2307 480 9666(this)m 876(lookup)s 1595(f)s 2(ails)k 2054(then)s
2308 2523(the)s 2871(service)s 3603(will)s 4029(not)s 4395(be)s
2309 4677(in)s 9(v)k 4(ok)k 2(ed\).)k gsave
2315 480 9186(The)m 908(uid)s 1272(of)s 1543(the)s
2316 1891(calling)s 2594(process.)s gsave
2319 240 fnt31 0 -52(USERV_GID)m
2322 908(gid)s 1272(and)s 1676(supplementary)s 3138(group)s 3750(list)s
2323 4101(of)s 4372(the)s 4720(calling)s 5423(process:)s 6246(\207rst)s
2324 6677(the)s 7025(group)s 7637(in)s 7880(gid)s 8244(and)s
2325 8648(then)s 480 8466(those)m 1041(in)s 1284(the)s 1632(supplementary)s
2326 3094(group)s 3706(list,)s 4104(in)s 4347(decimal,)s 5210(separated)s
2327 6170(by)s 6464(spaces.)s gsave
2330 240 fnt31 0 -52(USERV_GROUP)m
2333 908(group)s 1520(names)s 2182(of)s 2453(the)s 2801(calling)s
2334 3504(process,)s 4328(listed)s 4903(in)s 5146(the)s 5494(same)s
2335 6041(w)s 2(ay)k 6492(as)s 6742(the)s 7090(ids)s
2336 7420(are)s 7767(in)s gsave
2339 240 fnt31 0 -52(USERV_GID)m
2342 480 7746(If)m 710(no)s 1003(name)s 1577(can)s 1966(be)s
2343 2248(found)s 2865(for)s 3203(an)s 3(y)k 3600(of)s
2344 3871(the)s 4219(calling)s 4922(process')s 13(s)k 5849(group\(s\))s
2345 6708(then)s 7177(the)s 7525(service)s 8257(will)s 8683(not)s
2346 480 7506(be)m 762(in)s 9(v)k 4(ok)k 2(ed.)k
2350 240 fnt31 0 -52(USERV_CWD)m
2352 480 7026(The)m 908(client')s 13(s)k
2353 1648(current)s 2384(w)s 2(orking)k 3233(directory)s 4149(name)s
2354 4723(\(this)s 5198(directory)s 6114(may)s 6580(not)s 6946(be)s
2355 7228(accessible)s 8252(to)s 8491(the)s 480 6786(service\).)m 1339(If)s
2356 1568(it)s 1759(could)s 2348(not)s 2713(be)s 2994(determined)s
2357 4126(or)s 4384(the)s gsave
2360 240 fnt31 0 -52(\211\211hidecwd)m
2363 6103(w)s 2(as)k 6523(used)s 7019(then)s 7487(this)s
2364 7882(v)s 6(ariable)k 8700(will)s 480 6546(be)m 762(set)s
2365 1087(to)s 1326(an)s 1609(empty)s 2261(string)s 2858(\(this)s
2366 3333(is)s 3543(not)s 3909(considered)s 5003(an)s 5286(error\).)s
2370 240 fnt31 0 -52(USERV_SERVICE)m
2372 480 6066(The)m 908(service)s 1640(name)s
2373 2214(requested)s 3188(by)s 3482(the)s 3830(caller)s 13(.)k
2377 240 fnt31 0 -52(USERV_U_)m gsave
2380 240 fnt83 0 -52(name)m
2385 908(v)s 6(alue)k 1476(supplied)s 2345(to)s 2584(the)s
2386 2932(client)s 3522(by)s 3816(the)s 4164(caller)s 4753(using)s
2387 5325(-D)s 240 fnt83 5569 5588(name)m 240 fnt82 6081 5586(.)m
2391 240 fnt31 0 -52(HOME)m
2396 240 fnt31 0 -52(PATH)m
2402 240 fnt31 0 -52(SHELL)m
2413 240 fnt31 0 -52(USER)m
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2417 6920(the)s 7268(details)s 7942(of)s 8213(the)s 0 5083(service)m
2418 732(user\).)s 0 52(User)m 511(service)s 1243(daemon)s 2058(and)s
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2498 4838(by)s 5132(a)s 5298(later)s 5781(directi)s 6(v)k 3(e.)k
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2503 240 fnt31 0 -52(/etc/userv/system.default)m
2505 5072(.)s 5176(Then,)s 5775(by)s
2506 6069(def)s 2(ault)k 6790(\(this)s 7265(beha)s 4(viour)k
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2508 1937(read)s 2406(a)s 2572(per)s 4(-user)k 3410(\207le)s
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2516 7464(user')s 13(s)k 8072(shell)s 8578(is)s 8788(in)s
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2523 2128(will)s 2554(read)s gsave
2526 240 fnt31 0 -52(/etc/userv/system.override)m
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2530 1940(of)s 2208(these)s 2753(\207les)s 3199(it)s 3388(will)s
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3100 3198(the)s 3546(descripti)s 6(v)k 3(e)k 4641(string)s
3101 240 fnt83 5238 12142(te)m 4(xt)k 240 fnt82 5642 12140(to)m
3102 5881(be)s 6163(deli)s 6(v)k 3(ered)k 7101(as)s
3103 7351(if)s 7568(it)s 7760(were)s 8280(an)s 8563(error)s
3104 480 11900(message,)m 1397(b)s 4(ut)k 1759(does)s 2249(not)s
3105 2615(actually)s 3425(cause)s 4012(an)s 4295(error)s 13(.)k
3106 300 fnt84 0 11233(4.2.2.)m 813(Dir)s 5(ecti)k 3(v)k 3(es)k
3107 2148(with)s 2781(delay)s 3(ed)k 3828(effect)s 240 fnt82
3108 0 10662(The)m 428(follo)s 6(wing)k 1405(directi)s 6(v)k 3(es)k
3109 2375(ha)s 4(v)k 3(e)k 2876(no)s 3169(immediate)s
3110 4233(ef)s 6(fect,)k 4876(b)s 4(ut)k 5238(are)s
3111 5585(remembered)s 6837(and)s 7241(ha)s 4(v)k 3(e)k
3112 7742(an)s 8025(ef)s 6(fect)k 8621(on)s 0 10422(later)m
3113 483(processing)s 1559(of)s 1830(the)s 2178(con\207guration)s 3511(\207les.)s
3117 240 fnt31 0 -52(user\211rcfile)m gsave
3120 240 fnt83 0 -52(\207lename)m
3124 480 9774(Speci\207es)m
3125 1380(that)s 1784(the)s 2118(\207le)s 240 fnt83 2465 9776(\207lename)m
3126 240 fnt82 3315 9774(should)m 3998(be)s 4266(read)s 4721(instead)s
3127 5442(of)s 5699(the)s 6033(user')s 13(s)k gsave
3133 7728(.)s 7818(This)s 8280(does)s 240 fnt83
3134 8756 9776(not)m 240 fnt82 480 9534(happen)m 1229(immediately;)s 2535(instead,)s
3135 3319(the)s 3667(setting)s 4357(is)s 4567(remembered)s 5819(and)s
3136 6223(used)s 6720(after)s 7216(the)s gsave
3139 240 fnt31 0 -52(system.default)m
3142 480 9294(con\207guration)m 1812(\207le)s 2171(has)s 2539(been)s 3046(read.)s
3143 3559(This)s 4033(directi)s 6(v)k 3(e)k 4913(has)s
3144 5281(no)s 5572(ef)s 6(fect)k 6166(in)s 6407(a)s
3145 6571(user')s 13(s)k 7177(con\207guration)s 8508(\207le)s 8867(or)s
3146 480 9054(in)m 723(the)s gsave
3149 240 fnt31 0 -52(system.override)m
3152 3044(as)s 3294(the)s 3642(user')s 13(s)k 4250(con\207guration)s
3153 5583(\207le)s 5944(has)s 6314(already)s 7071(been)s 7580(found)s
3154 8197(and)s 8601(read)s 480 8814(by)m 774(then)s 1243(and)s
3155 1647(will)s 2073(not)s 2439(be)s 2721(re-read.)s gsave
3159 0 -52(errors\211to\211stderr)m
3161 480 8180(Causes)m 1209(error)s 1732(messages)s 2686(to)s
3162 2925(be)s 3207(deli)s 6(v)k 3(ered)k 4145(to)s
3163 4384(the)s 4732(client')s 13(s)k 5472(stderr)s 13(.)k
3167 240 fnt31 0 -52(errors\211to\211file)m
3169 240 fnt83 1581 7788(\207lename)m 240 fnt82
3170 480 7546(Error)m 1039(messages)s 1989(will)s 2410(be)s 2688(written)s
3171 3416(to)s 240 fnt83 3651 7548(\207lename)m 240 fnt82 4455 7546(,)m
3172 4557(which)s 5195(will)s 5617(be)s 5894(opened)s 6640(in)s
3173 6878(the)s 7222(conte)s 3(xt)k 7978(of)s 8245(and)s
3174 8644(with)s 480 7306(the)m 828(pri)s 6(vile)k 3(ges)k
3175 1812(of)s 2083(the)s 2431(service)s 3163(user)s 13(.)k
3179 240 fnt31 0 -52(errors\211to\211syslog)m
3181 1782 6912([)m 240 fnt83 1853 6914(facility)m
3182 240 fnt82 2571 6912([)m 240 fnt83 2642 6914(le)m 3(vel)k
3183 240 fnt82 3089 6912(]])m 480 6672(Error)m 1043(messages)s 1997(will)s
3184 2423(be)s 2705(deli)s 6(v)k 3(ered)k 3643(using)s
3188 240 fnt31 0 -52(syslog)m
3190 4815(.)s 4919(The)s 5347(def)s 2(ault)k
3191 240 fnt83 6068 6674(facility)m 240 fnt82 6786 6672(is)m gsave
3197 7396(;)s 7508(the)s 7856(def)s 2(ault)k
3198 240 fnt83 8577 6674(le)m 3(vel)k 240 fnt82 480 6432(is)m
3202 240 fnt31 0 -52(error)m
3204 1190(.)s 300 fnt84 0 5815(4.2.3.)m
3205 813(Contr)s 5(ol)k 1874(structur)s 5(e)k 3117(dir)s 5(ecti)k 3(v)k 3(es)k
3206 240 fnt82 0 5300(The)m 421(follo)s 6(wing)k 1390(directi)s 6(v)k 3(es)k
3207 2353(are)s 2692(used)s 3182(to)s 3413(create)s 4031(control)s
3208 4755(structures.)s 5780(If)s 6002(the)s 6343(end)s 6739(of)s
3209 7003(the)s 7343(\207le)s 7697(is)s 7899(encountered)s 0 5060(before)m
3210 666(the)s 1014(end)s 1418(of)s 1689(an)s 3(y)k
3211 2086(control)s 2818(structure)s 3709(which)s 4351(w)s 2(as)k
3212 4772(started)s 5466(inside)s 6093(it)s 6285(then)s 6754(that)s
3213 7172(control)s 7904(structure)s 8795(is)s 0 4820(considered)m 1094(\207nished.)s
3214 1956(This)s 2432(is)s 2642(not)s 3008(an)s 3291(error)s 13(.)k
3218 240 fnt31 0 -52(if)m gsave
3221 240 fnt83 0 -52(condition)m
3232 240 fnt83 0 -52(condition)m
3239 240 fnt31 0 -52(else)m
3245 240 fnt31 0 -52(fi)m
3247 480 3452(Lines)m 1062(follo)s 6(wing)k
3251 240 fnt31 0 -52(if)m
3253 2299(are)s 2646(interpreted)s 3738(only)s
3254 4218(if)s 4435(the)s 4783(condition)s 5744(is)s 5954(true.)s
3255 6429(Man)s 3(y)k 7039(conditions)s 8087(are)s 480 3212(properties)m
3256 1486(of)s 1757(parameter)s 2771(v)s 6(alues.)k 3480(Most)s
3257 4032(parameters)s 5130(ha)s 4(v)k 3(e)k 5631(a)s
3258 5797(single)s 6424(string)s 7021(as)s 7271(a)s 7437(v)s 6(alue;)k
3259 8061(ho)s 6(we)k 6(v)k 3(er)k 9(,)k
3260 480 2972(some)m 1035(may)s 1495(yield)s 2025(zero)s 2483(or)s
3261 2735(se)s 6(v)k 3(eral)k 3451(strings,)s 4189(in)s
3262 4426(which)s 5062(case)s 5522(the)s 5864(condition)s 6819(is)s
3263 7023(true)s 7444(if)s 7654(it)s 7840(is)s 8044(true)s
3264 8465(of)s 8729(an)s 3(y)k 480 2732(of)m 751(the)s
3265 1099(strings)s 1787(indi)s 6(vidually)k 15(.)k 3026(P)s 3(arameters)k
3266 4134(are)s 4481(described)s 5455(belo)s 6(w)k 15(.)k
3267 6183(The)s 6611(conditions)s 7659(are:)s gsave
3270 240 fnt31 0 -52(glob)m
3274 240 fnt83 0 -52(par)m 3(ameter)k
3279 240 fnt83 0 -52(glob\211pattern)m
3284 960 2251(The)m 1388(v)s 6(alue)k 1956(of)s
3285 2227(the)s 2575(parameter)s 3589(whose)s 4257(name)s 4831(is)s
3286 5041(gi)s 6(v)k 3(en)k 5621(matches)s 6455(one)s
3287 6857(of)s 7128(the)s 7476(glob)s 7955(patterns)s 960 2011(\(anchored)m
3288 1974(at)s 2206(both)s 2689(ends;)s 3240(backslashes)s 4420(can)s
3289 4809(be)s 5091(used)s 5588(to)s 5827(escape)s 6520(metacharacters\).)s
3293 240 fnt31 0 -52(range)m gsave
3296 240 fnt83 0 -52(par)m 3(ameter)k
3302 240 fnt83 0 -52(min)m
3307 240 fnt83 0 -52(max)m
3312 1380(v)s 6(alue)k 1940(of)s 2203(the)s 2543(parameter)s
3313 3548(is)s 3750(a)s 3908(nonne)s 3(g)k 1(ati)k 6(v)k 3(e)k
3314 5113(inte)s 3(ger)k 5825(and)s 6220(lies)s 6594(within)s
3315 7254(the)s 7594(range)s 8172(speci\207ed.)s 240 fnt83 960 1293(min)m
3316 240 fnt82 1373 1291(or)m 240 fnt83 1632 1293(max)m 240 fnt82
3317 2091 1291(may)m 2557(be)s gsave
3323 3238(indicate)s 4050(no)s 4343(lo)s 6(wer)k 4941(or)s
3324 5200(upper)s 5805(limit,)s 6362(respecti)s 6(v)k 3(ely)k 15(.)k
3328 240 fnt31 0 -52(grep)m gsave
3331 240 fnt83 0 -52(par)m 3(ameter)k
3337 240 fnt83 0 -52(\207lename)m
3341 960 810(The)m 240 fnt83 1388 812(\207lename)m
3342 240 fnt82 2252 810(refers)m 2845(to)s 3084(a)s 3250(\207le)s
3343 3611(one)s 4013(of)s 4284(whose)s 4952(lines)s 5454(is)s
3344 5664(the)s 6012(v)s 6(alue)k 6580(of)s 6851(the)s
3345 7199(parameter)s 8213(\(leading)s 0 52(1.0.1)m 4809(User)s 5320(service)s
3346 6052(daemon)s 6867(and)s 7271(client)s 7861(speci\207cation)s
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3385 240 fnt84 8833 13842(13)m 240 fnt82 960 13251(or)m 1211(trailing)s
3386 1944(whitespace)s 3053(on)s 3341(each)s 3827(line)s 4232(and)s
3387 4627(empty)s 5270(lines)s 5764(in)s 5998(the)s 6337(\207le)s
3388 6689(are)s 7027(ignored\).)s 7932(It)s 8128(is)s 8329(an)s
3389 8603(error)s 960 13011(for)m 1298(the)s 1646(\207le)s 2007(not)s
3390 2373(to)s 2612(be)s 2894(opened)s 3644(and)s 4048(read.)s
3394 240 fnt31 0 -52(!)m gsave
3397 240 fnt83 0 -52(condition)m
3402 240 fnt83 1388 12532(condition)m 240 fnt82 2346 12530(is)m 240 fnt83
3403 2556 12532(not)m 240 fnt82 2926 12530(true.)m 600 12290(Conjunctions:)m gsave
3404 1983 12344 translate
3410 2547 12344 translate
3415 1440 11864 translate
3421 240 fnt83 0 -52(condition)m
3432 240 fnt83 0 -52(condition)m
3437 960 10598(is)m 1170(true)s 1597(if)s 1814(all)s
3438 2107(the)s 2455(listed)s 3030(conditions)s 4078(are)s 4425(true;)s
3440 5548 10652 translate
3444 5708(is)s 5918(used)s
3445 6415(it)s 6607(is)s 6817(true)s 7244(if)s 7461(an)s 3(y)k
3446 7858(of)s 8129(them)s 8667(is)s 960 10353(true.)m 1428(Ne)s 6(wlines)k
3447 2368(must)s 2885(be)s 3159(used)s 3648(to)s 3879(separate)s
3448 4709(one)s 5104(condition)s 6057(from)s 6573(the)s 6913(ne)s 3(xt,)k
3449 7421(as)s 7663(sho)s 6(wn,)k 8382(and)s 8778(the)s
3450 960 10113(parentheses)m 2126(are)s 2473(mandatory)s 15(.)k 3585(These)s
3451 4212(conjunctions)s 5486(do)s 5779(not)s 6145(do)s 6438(lazy)s
3452 6890(e)s 6(v)k 6(aluation.)k 480 9850(The)m 908(parameters)s
3456 240 fnt31 0 -52(service)m
3458 960 9370(The)m 1388(service)s
3459 2120(name)s 2694(speci\207ed)s 3602(when)s 4178(the)s 4526(client)s
3460 5116(w)s 2(as)k 5537(called.)s gsave
3463 240 fnt31 0 -52(calling\211user)m
3466 960 8890(T)m 19(w)k 2(o)k 1431(strings:)s 2174(the)s
3467 2522(login)s 3071(name)s 3645(of)s 3916(the)s 4264(calling)s
3468 4967(user)s 5425(\(determined)s 6637(as)s 6887(for)s gsave
3474 8226(,)s 8333(abo)s 3(v)k 3(e\))k
3475 960 8650(and)m 1364(the)s 1712(calling)s 2415(uid)s 2779(\(represented)s
3476 4017(in)s 4260(decimal\).)s gsave
3479 240 fnt31 0 -52(calling\211group)m
3481 960 8170(Se)m 6(v)k 3(eral)k
3482 1722(strings:)s 2465(the)s 2813(primary)s 3623(and)s 4027(supplementary)s
3483 5489(group)s 6101(names)s 6763(and)s 7167(gids)s 7617(\(in)s
3484 7939(decimal\))s 960 7930(of)m 1231(the)s 1579(calling)s 2282(process.)s
3485 3103(All)s 3463(the)s 3811(group)s 4423(names)s 5085(come)s
3486 5659(\207rst,)s 6137(and)s 6541(then)s 7010(the)s 7358(gids.)s
3487 7861(If)s 8091(the)s 8439(\207rst)s 960 7690(supplementary)m 2422(group)s
3488 3034(is)s 3244(the)s 3592(same)s 4139(as)s 4389(the)s
3489 4737(primary)s 5547(group)s 6159(then)s 6628(it)s 6820(is)s
3490 7030(elided.)s gsave
3493 240 fnt31 0 -52(calling\211user\211shell)m
3495 960 7210(The)m 1388(calling)s
3496 2091(user')s 13(s)k 2699(shell,)s 3257(as)s 3507(listed)s
3497 4082(in)s 4325(the)s 4673(passw)s 2(ord)k 5633(entry)s
3498 6178(for)s 6516(the)s 6864(calling)s 7567(login)s 8116(name)s
3499 8690(\(as)s 960 6970(determined)m 2093(for)s gsave
3502 240 fnt31 0 -52(USERV_USER)m
3505 3432(,)s 3539(abo)s 3(v)k 3(e\).)k gsave
3509 0 -52(service\211user)m
3511 960 6490(T)m 19(w)k 2(o)k 1431(strings:)s
3512 2174(the)s 2522(name)s 3096(of)s 3367(the)s 3715(service)s
3513 4447(user)s 4905(\(as)s 5234(speci\207ed)s 6142(to)s 6381(the)s
3514 6729(client\))s 7387(and)s 7791(their)s 8288(uid)s 960 6250(\(represented)m
3515 2198(in)s 2441(decimal\).)s gsave
3518 240 fnt31 0 -52(service\211group)m
3520 960 5770(Se)m 6(v)k 3(eral)k
3521 1722(strings:)s 2465(the)s 2813(primary)s 3623(and)s 4027(supplementary)s
3522 5489(group)s 6101(names)s 6763(and)s 7167(gids)s 7617(\(in)s
3523 7939(decimal\))s 8823(of)s 960 5530(the)m 1308(service)s 2040(user)s 13(.)k
3527 240 fnt31 0 -52(service\211user\211shell)m
3529 960 5050(The)m 1388(service)s 2120(user')s 13(s)k
3530 2728(shell,)s 3286(as)s 3536(listed)s 4111(in)s 4354(their)s
3531 4851(passw)s 2(ord)k 5811(entry)s 15(.)k gsave
3538 240 fnt83 0 -52(name)m
3542 960 4570(The)m 1388(v)s 6(alue)k
3543 1956(of)s 2227(the)s 2575(user)s 4(-de\207ned)k 3811(v)s 6(ariable)k
3544 240 fnt83 4630 4572(name)m 240 fnt82 5202 4570(passed)m 5898(by)s
3545 6192(the)s 6540(caller)s 7129(using)s 7701(the)s gsave
3549 0 -52(\211\211defvar)m
3551 960 4330(command-line)m 2397(option)s 3066(to)s 3305(the)s
3552 3653(client.)s 4287(If)s 4517(the)s 4865(v)s 6(ariable)k
3553 5684(w)s 2(as)k 6105(not)s 6471(de\207ned)s 7234(then)s
3554 7703(this)s 8099(parameter)s 960 4090(is)m 1170(an)s 1453(empty)s
3555 2105(list)s 2456(of)s 2727(strings;)s 3476(in)s 3719(this)s
3556 4115(case)s 4582(an)s 3(y)k 4979(condition)s 5940(which)s
3557 6582(tests)s 7057(it)s 7249(will)s 7675(be)s 7957(f)s 2(alse,)k
3561 240 fnt31 0 -52(include\211lookup)m
3563 2421 3850(on)m 2718(it)s
3564 2910(will)s 3336(read)s 3805(the)s gsave
3567 240 fnt31 0 -52(:none)m
3570 4713(\207le,)s 5125(or)s gsave
3573 240 fnt31 0 -52(:default)m
3579 240 fnt31 0 -52(:none)m
3581 7022(is)s 7232(not)s 7598(found.)s
3585 240 fnt31 0 -52(errors\211push)m
3587 240 fnt83 1281 3429(\207lename)m gsave
3593 240 fnt82 480 2947(Stacks)m 1155(the)s 1503(error)s
3594 2026(handling)s 2917(beha)s 4(viour)k 3930(currently)s 4846(in)s
3595 5089(ef)s 6(fect.)k 5729(An)s 3(y)k 6193(changes)s
3596 7015(to)s 7254(error)s 7777(handling)s 8668(will)s 480 2707(tak)m 2(e)k
3597 932(ef)s 6(fect)k 1528(only)s 2008(between)s gsave
3601 0 -52(errors\211push)m
3606 240 fnt31 0 -52(srorre)m
3612 240 fnt31 0 -52(catch\211quit)m
3617 240 fnt31 0 -52(hctac)m
3620 935(use)s 1301(of)s gsave
3623 240 fnt31 0 -52(quit)m
3629 240 fnt31 0 -52(catch\211quit)m
3631 3683(will)s 4100(merely)s 4807(cause)s
3632 5385(the)s 5724(parsing)s 6472(to)s 6701(continue)s 7572(at)s
3636 240 fnt31 0 -52(hctac)m
3638 8345(instead.)s 480 1593(An)m 3(y)k
3639 944(control)s 1676(constructs)s 2696(started)s 3390(since)s 3937(the)s
3643 240 fnt31 0 -52(catch\211quit)m
3645 5346(will)s 5772(be)s 6054(considered)s
3646 7148(\207nished)s 7964(if)s 8181(a)s gsave
3649 240 fnt31 0 -52(quit)m
3652 8807(is)s 480 1353(found.)m 1203(If)s 1433(an)s 1716(error)s
3653 2239(occurs)s 2914(inside)s gsave
3656 240 fnt31 0 -52(catch\211quit)m
3659 4950(e)s 3(x)k 3(ecution)k 5931(settings)s 6712(will)s
3660 7138(be)s 7420(reset)s 7930(\(as)s 8259(if)s 8476(by)s
3664 240 fnt31 0 -52(reset)m
3666 1040 1113(directi)m 6(v)k 3(e\))k
3667 1994(and)s 2398(parsing)s 3155(will)s 3581(lik)s 2(e)k 6(wise)k
3668 4425(continue)s 5305(at)s gsave
3671 240 fnt31 0 -52(hctac)m
3674 6201(If)s 6431(a)s 6597(le)s 3(xical)k 7285(or)s
3675 7544(syntax)s 8224(error)s 8747(is)s 480 873(detected)m 1334(in)s
3676 1577(the)s 1925(same)s 2472(con\207guration)s 3805(\207le)s 4166(as)s
3680 240 fnt31 0 -52(catch\211quit)m
3682 5765(,)s 5872(while)s
3683 6459(looking)s 7244(for)s 7582(the)s gsave
3686 240 fnt31 0 -52(hctac)m
3689 8490(after)s 0 52(User)m 511(service)s 1243(daemon)s 2058(and)s
3690 2462(client)s 3052(speci\207cation)s 8611(1.0.1)s
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3733 240 fnt31 0 -52(quit)m
3735 1945(,)s 2052(that)s
3736 2470(ne)s 6(w)k 2917(error)s 3440(will)s 3866(not)s
3737 4232(be)s 4514(caught.)s 300 fnt84 0 12587(4.2.4.)m 813(Dir)s 5(ecti)k 3(v)k 3(es)k
3738 2148(f)s 7(or)k 2595(changing)s 3829(execution)s 5112(settings)s
3739 240 fnt82 0 12016(The)m 419(follo)s 6(wing)k 1386(directi)s 6(v)k 3(es)k
3740 2346(modify)s 3082(the)s 3420(e)s 3(x)k 3(ecution)k
3741 4391(settings;)s 5223(the)s 5562(serv)s 3(er)k 6192(will)s
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3749 3704(setting)s 4394(will)s 4820(tak)s 2(e)k 5272(ef)s 6(fect.)k
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3755 480 10887(Reject)m 1150(the)s 1498(request.)s
3757 2292 10941 translate
3759 240 fnt31 0 -52(execute)m
3762 3099 10941 translate
3764 240 fnt31 0 -52(execute\211from\211directory)m
3768 5765 10941 translate
3770 240 fnt31 0 -52(execute\211from\211path)m
3772 7527(will)s 7953(change)s
3773 480 10647(this)m 876(setting.)s gsave
3776 240 fnt31 0 -52(execute)m gsave
3780 0 -52(pr)m 10(o)k 2(gr)k 3(am)k
3786 240 fnt83 0 -52(ar)m 8(gument)k
3790 480 10013(Ex)m 3(ecute)k
3791 1300(the)s 1645(program)s 240 fnt83 2512 10015(pr)m 10(o)k 2(gr)k 3(am)k
3792 240 fnt82 3332 10013(,)m 3436(with)s 3915(the)s 4259(ar)s 4(guments)k
3793 5299(as)s 5546(speci\207ed,)s 6500(follo)s 6(wed)k 7399(by)s
3794 7690(an)s 3(y)k 8083(ar)s 4(guments)k 480 9773(gi)m 6(v)k 3(en)k
3795 1052(to)s 1282(the)s 1621(client)s 2203(if)s gsave
3799 0 -52(no\211suppress\211args)m
3801 4064(is)s 4266(in)s 4500(ef)s 6(fect.)k
3802 5131(It)s 5328(is)s 5529(an)s 5803(error)s 6318(for)s
3803 6647(the)s 6986(e)s 3(x)k 3(ecution)k 7959(to)s
3804 8189(f)s 2(ail)k 8550(when)s 480 9533(it)m 672(is)s
3805 882(attempted)s 1882(\(after)s 2457(all)s 2750(the)s 3098(con\207guration)s
3806 4431(has)s 4801(been)s 5310(parsed\).)s 6117(If)s 240 fnt83
3807 6347 9535(pr)m 10(o)k 2(gr)k 3(am)k 240 fnt82
3808 7227 9533(does)m 7717(not)s 8083(contain)s 8844(a)s 480 9293(slash)m
3809 1015(it)s 1207(will)s 1633(be)s 1915(searched)s 2809(for)s
3810 3147(on)s 3444(the)s 3792(service)s 4524(user')s 13(s)k
3814 240 fnt31 0 -52(execute\211from\211directory)m gsave
3817 240 fnt83 0 -52(pathname)m
3823 240 fnt83 0 -52(ar)m 8(gument)k
3828 480 8659(T)m 19(ak)k 2(e)k 993(all)s 1286(the)s
3829 1634(characters)s 2652(after)s 3148(the)s 3496(last)s 3887(slash)s
3830 4422(of)s 4693(the)s 5041(service)s 5773(name)s 6347(speci\207ed)s
3831 7255(when)s 7831(the)s 8179(client)s 480 8418(w)m 2(as)k
3832 901(called,)s 1578(and)s 1982(e)s 3(x)k 3(ecute)k
3833 2762(that)s 3180(program)s 4050(in)s 4293(the)s 4641(directory)s
3834 5557(named)s 6253(by)s 240 fnt83 6547 8420(pathname)m 240 fnt82
3835 7545 8418(as)m 7795(if)s 8012(it)s 8204(had)s 8608(been)s
3836 480 8178(speci\207ed)m 1388(for)s 240 fnt83 1726 8180(e)m 4(xecute)k
3837 240 fnt82 2431 8178(.)m 2535(The)s 2963(part)s 3394(of)s
3838 3665(the)s 4013(service)s 4745(name)s 5319(used)s 5816(may)s
3839 6282(contain)s 7043(only)s 7523(alphanumerics)s 480 7938(and)m 884(h)s 1(yphens)k
3840 1732(and)s 2136(must)s 2660(start)s 3130(with)s 3611(an)s
3841 3894(alphanumeric)s 5247(\(and)s 5730(it)s 5921(must)s 6446(be)s
3842 6727(non-empty\),)s 7950(otherwise)s 8934(it)s 480 7698(is)m 690(an)s
3843 973(error)s 13(.)k 1587(This)s 2063(directi)s 6(v)k 3(e)k
3844 2945(is)s 3155(ignored)s 3944(if)s 4161(the)s 4509(rele)s 6(v)k 6(ant)k
3845 5326(program)s 6196(does)s 6686(not)s 7052(e)s 3(xist)k
3846 7560(in)s 7803(the)s 8151(directory)s 480 7458(speci\207ed;)m 1437(in)s
3847 1675(this)s 2066(case)s 2528(the)s 2871(program)s 3735(to)s
3848 3969(e)s 3(x)k 3(ecute)k 4744(is)s 4949(left)s
3849 5321(at)s 5548(its)s 5818(pre)s 6(vious)k 6682(setting)s
3850 7367(\(or)s 7700(unset,)s 8307(if)s 8519(it)s 8705(w)s 2(as)k
3851 480 7218(not)m 846(set)s 1171(before\).)s 2024(It)s 2229(is)s
3852 2439(an)s 2722(error)s 3245(for)s 3583(the)s 3931(test)s
3853 4322(for)s 4660(the)s 5008(e)s 3(xistence)k 5950(of)s
3854 6221(the)s 6569(program)s 7439(to)s 7678(f)s 2(ail)k
3855 8048(other)s 8599(than)s 480 6978(with)m 958(a)s 1120(`no)s
3856 1488(such)s 1980(\207le)s 2336(or)s 2591(directory')s 3561(indication.)s
3857 4617(It)s 4818(is)s 5023(also)s 5457(an)s 5736(error)s
3858 6255(for)s 6589(the)s 6932(e)s 3(x)k 3(ecution)k
3859 7909(to)s 8144(f)s 2(ail)k 8510(if)s 8722(and)s
3860 480 6738(when)m 1056(it)s 1248(is)s 1458(attempted)s 2458(\(after)s
3861 3033(all)s 3326(the)s 3674(con\207guration)s 5007(has)s 5377(been)s
3862 5886(parsed\).)s gsave
3865 240 fnt31 0 -52(execute\211from\211path)m
3867 240 fnt83 480 6106(service)m
3868 240 fnt82 1202 6104(is)m 1404(interpreted)s 2488(as)s 2731(a)s
3869 2889(program)s 3751(on)s 4041(the)s 4381(def)s 2(ault)k
3873 240 fnt31 0 -52(PATH)m
3875 5546(\(or)s 5877(as)s 6119(a)s
3876 6277(pathname)s 7256(of)s 7519(an)s 7794(e)s 3(x)k 3(ecutable,)k
3877 8909(if)s 480 5863(it)m 660(contains)s 1495(a)s gsave
3883 1749(\).)s 1919(This)s 2383(directi)s 6(v)k 3(e)k
3884 3252(is)s 240 fnt83 3450 5865(very)m 3904(dang)s 2(er)k 10(ous)k
3885 240 fnt82 4899 5863(,)m 4994(and)s 5385(is)s 5583(only)s
3886 6050(pro)s 3(vided)k 6944(to)s 7170(mak)s 2(e)k
3890 240 fnt31 0 -52(\211\211override)m
3892 480 5623(options)m 1230(ef)s 6(fecti)k 6(v)k 3(e.)k
3893 2146(It)s 2344(should)s 3034(not)s 3393(normally)s 4304(be)s
3894 4579(used.)s 5115(It)s 5313(is)s 5516(an)s 5792(error)s
3895 6309(for)s 6640(the)s 6981(e)s 3(x)k 3(ecution)k
3896 7955(to)s 8187(f)s 2(ail)k 8550(when)s 480 5383(it)m
3897 672(is)s 882(attempted)s 1882(\(after)s 2457(all)s 2750(the)s
3898 3098(con\207guration)s 4431(has)s 4801(been)s 5310(parsed\).)s gsave
3902 0 -52(execute\211builtin)m gsave
3905 240 fnt83 0 -52(service\211name)m
3910 240 fnt83 0 -52(service\211ar)m 8(guments)k
3915 480 4749(Ex)m 3(ecutes)k 1388(the)s 1732(b)s 4(uiltin)k
3916 2405(service)s 240 fnt83 3133 4751(service-name)m 240 fnt82 4400 4749(.)m
3917 4500(These)s 5123(b)s 4(uiltin)k 5796(services)s 6612(display)s
3918 7353(information)s 8534(about)s 480 4509(the)m 822(serv)s 3(er)k
3919 1455(and/or)s 2120(the)s 2461(request,)s 3252(and)s 3649(ignore)s
3920 4310(an)s 3(y)k 4700(ar)s 4(guments)k 5737(passed)s
3921 6426(from)s 6944(the)s 7285(service)s 8011(side)s 8445(e)s 3(xcept)k
3922 480 4269(possibly)m 1320(to)s 1547(print)s 2046(them)s 2572(as)s
3923 2810(part)s 3228(of)s 3487(their)s 3972(output.)s 4676(The)s 3(y)k
3924 5207(write)s 5740(their)s 6225(results)s 6887(to)s 7114(their)s
3925 7599(standard)s 8454(output)s 480 4029(\(i.e.,)m 958(where)s 6(v)k 3(er)k
3926 1898(\207le)s 2259(descriptor)s 3274(1)s 3429(is)s 3639(directed\).)s
3927 4591(The)s 5019(b)s 4(uiltin)k 5696(services)s 6516(are:)s
3931 240 fnt31 0 -52(execute)m
3933 960 3549(Displays)m 1848(the)s 2196(e)s 3(x)k 3(ecution)k
3934 3177(settings,)s 4014(de\207ned)s 4777(v)s 6(ariables,)k 5740(ar)s 4(guments,)k
3935 6839(etc.)s 7221(with)s 7703(which)s 8345(the)s 960 3309(b)m 4(uiltin)k
3936 1637(service)s 2369(w)s 2(as)k 2790(in)s 9(v)k 4(ok)k 2(ed.)k
3940 240 fnt31 0 -52(environment)m
3942 960 2829(Dis)m 1283(plays)s 1839(the)s
3943 2187(en)s 2410(vi)s 2590(ron)s 2906(ment)s 3444(v)s 6(ari)k
3944 3803(able)s 4257(set)s 4522(tings)s 5038(with)s 5520(which)s
3945 6162(the)s 6510(b)s 4(uiltin)k 7187(ser)s 7465(vice)s
3946 7919(w)s 2(as)k 960 2589(in)m 1143(v)s 4(ok)k 2(ed.)k
3950 240 fnt31 0 -52(parameter)m gsave
3953 240 fnt83 0 -52(par)m 3(ameter)k
3958 960 2109(Displays)m 1848(the)s 2196(v)s 6(alues)k 2852(of)s
3959 3123(the)s 3471(service)s 4203(con\207guration)s 5536(language)s 6456(parameter)s
3960 7470(speci\207ed.)s gsave
3963 240 fnt31 0 -52(version)m
3965 960 1629(Displays)m 1848(the)s
3966 2196(v)s 3(ersion)k 2954(string)s 3551(and)s 3955(compilation)s
3967 5154(details)s 5828(of)s 6099(the)s 6447(uservd)s 7143(serv)s 3(er)k
3968 7783(program.)s gsave
3971 240 fnt31 0 -52(reset)m
3973 960 1149(Dis)m 1283(plays)s
3974 1838(the)s 2184(de)s 2406(f)s 2(ault)k 2899(re)s
3975 3080(set)s 3403(con)s 3746(\207g)s 3992(u)s 4107(ra)s
3976 4292(tion)s 4719(\(e)s 6(v)k 6(al)k 5179(u)s
3977 5294(at)s 5466(ed)s 5748(when)s gsave
3980 240 fnt31 0 -52(reset)m
3983 6881(is)s 7089(found)s 7704(in)s 7945(a)s 8109(con)s
3984 8452(\207g)s 8698(u)s 8813(ra)s 8998(-)s 960 909(tion)m
3985 1389(\207le,)s 1801(or)s 2060(when)s 2636(an)s 2919(er)s
3986 3104(ror)s 3442(is)s 3652(caught)s 4350(by)s gsave
3990 0 -52(catch\211quit)m
3992 5645(\).)s 0 52(1.0.1)m 4809(User)s 5320(service)s
3993 6052(daemon)s 6867(and)s 7271(client)s 7861(speci\207cation)s
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4032 240 fnt84 8833 13842(15)m gsave
4035 240 fnt31 0 -52(toplevel)m
4038 960 13024(Displays)m 1848(the)s 2196(top-le)s 6(v)k 3(el)k
4039 3091(def)s 2(ault)k 3812(con\207guration)s 5145(\(the)s 5572(con\207guration)s
4040 6905(data,)s 7410(e)s 6(v)k 6(aluated)k 8372(by)s
4041 8666(the)s 960 12784(serv)m 3(er)k 9(,)k 1638(which)s
4042 2280(calls)s 2768(all)s 3061(the)s 3409(other)s 3960(con\207guration)s
4043 5293(\207les\).)s gsave
4046 240 fnt31 0 -52(override)m
4048 960 12304(Displays)m 1847(the)s
4049 2194(top-le)s 6(v)k 3(el)k 3088(o)s 3(v)k 3(erride)k
4050 3932(con\207guration)s 5264(\(the)s 5690(con\207guration)s 7021(data,)s 7525(e)s 6(v)k 6(aluated)k
4051 8486(by)s 8778(the)s 960 12064(serv)m 3(er)k 9(,)k
4052 1638(which)s 2280(causes)s 2955(all)s 3248(the)s 3596(other)s
4053 4147(con\207guration)s 5480(data)s 5938(to)s 6177(be)s 6459(parsed\).)s
4057 240 fnt31 0 -52(help)m
4059 960 11584(Displays)m 1848(a)s 2014(list)s
4060 2365(of)s 2636(the)s 2984(understood)s 4106(b)s 4(uiltin)k
4061 4783(service)s 5515(names)s 6177(and)s 6581(ar)s 4(guments.)k
4062 480 11321(In)m 736(the)s 1084(fu)s 1278(ture)s 1705(oth)s
4063 2008(er)s 2253(b)s 4(uiltin)k 2930(ser)s 3208(vices)s
4064 3750(may)s 4216(be)s 4498(de)s 4720(\207ned)s 5257(which)s
4065 5899(do)s 6192(more)s 6739(than)s 7208(just)s 7613(print)s
4066 8124(in)s 8307(for)s 8585(-)s 480 11081(ma)m 772(tion.)s
4070 240 fnt31 0 -52(set\211environment)m
4075 240 fnt31 0 -52(no\211set\211environment)m
4079 1024 10311 translate
4081 240 fnt31 0 -52(/etc/environment)m
4083 2686(to)s 2925(set)s 3250(the)s
4084 3598(service)s 4330(user')s 13(s)k 4938(en)s 9(vironment.)k
4085 6242(This)s 6718(adds)s 7208(the)s 7556(o)s 3(v)k 3(erhead)k
4086 8485(of)s 480 10017(in)m 9(v)k 4(oking)k 1372(a)s
4087 1538(shell,)s 2096(b)s 4(ut)k 2458(doesn')s 4(t)k
4088 3218(cause)s 3805(an)s 3(y)k 4202(shell)s 4708(\(de\)mangling)s
4089 6049(of)s 6320(the)s 6668(service')s 13(s)k 7554(ar)s 4(guments.)k
4090 8650(This)s 480 9777(is)m 690(achie)s 6(v)k 3(ed)k
4091 1589(by)s 1883(in)s 9(v)k 4(oking)k gsave
4095 0 -52(.../program)m 1728(arg)s 2304(arg)s 2880(arg)s 3456(\202)s
4101 240 fnt31 0 -52(/bin/sh)m 1152(\211c)s 1584('.)s
4102 2016(/etc/environment;)s 4608(exec)s 5328("$@"')s 6192(\211)s 6480(.../program)s
4103 8208(arg)s 8784(arg)s 9360(arg)s 9936(\202)s
4109 0 -52(no\211set\211environment)m
4111 2342 8862(cancels)m 3096(the)s 3444(ef)s 6(fect)k
4115 240 fnt31 0 -52(set\211environment)m
4121 0 -52(no\211suppress\211args)m
4126 240 fnt31 0 -52(suppress\211args)m
4128 480 8038(Include)m 1253(an)s 3(y)k
4129 1650(ar)s 4(guments)k 2693(gi)s 6(v)k 3(en)k
4130 3273(to)s 3512(the)s 3860(client)s 4450(as)s 4700(ar)s 4(guments)k
4131 5743(to)s 5982(the)s 6330(program)s 7200(in)s 9(v)k 4(ok)k 2(ed)k
4132 8015(as)s 8265(a)s 8431(result)s 480 7798(of)m 749(an)s
4136 240 fnt31 0 -52(execute)m
4141 240 fnt31 0 -52(execute\211from\211directory)m
4147 240 fnt31 0 -52(execute\211from\211path)m
4149 6110(directi)s 6(v)k 3(e.)k
4153 240 fnt31 0 -52(suppress\211args)m
4155 8396(undoes)s 480 7558(the)m 828(ef)s 6(fect)k
4159 240 fnt31 0 -52(no\211suppress\211args)m
4165 0 -52(require\211fd)m gsave
4168 240 fnt83 0 -52(fd\211r)m 3(ang)k 2(e)k
4173 480 6938(In)m 676(sist)s 1054(that)s 1472(the)s
4174 1820(\207ledescrip)s 2808(tor\(s\))s 3373(be)s 3655(opened)s 4405(for)s
4175 4743(read)s 5152(ing)s 5511(resp.)s 6013(writ)s 6397(ing.)s
4176 6807(It)s 7012(is)s 7222(an)s 7505(er)s 7690(ror)s
4177 8028(if)s 8245(an)s 3(y)k 8642(de)s 8864(-)s
4178 480 6698(scrip)m 937(tor)s 1258(mark)s 2(ed)k 2027(as)s
4179 2272(re)s 2453(quired)s 3118(when)s 3689(the)s 4033(ser)s
4180 4311(vice)s 4760(is)s 4966(about)s 5554(to)s 5788(be)s
4181 6066(in)s 6249(v)s 4(ok)k 2(ed)k 6882(\(af)s
4182 7158(ter)s 7465(the)s 7808(con)s 8151(\207g)s 8397(u)s
4183 8512(ra)s 8697(tion)s 480 6458(has)m 850(been)s 1359(parsed\))s
4184 2111(w)s 2(as)k 2532(not)s 2898(spec)s 3316(i)s
4185 3376(\207ed)s 3793(when)s 4369(the)s 4717(client)s 5307(w)s 2(as)k
4186 5728(in)s 5911(v)s 4(ok)k 2(ed.)k 6595(Each)s
4187 7130(\207le)s 7491(de)s 7713(scrip)s 8170(tor)s 8495(has)s
4188 480 6218(a)m 646(sep)s 958(a)s 1064(rate)s 1477(set)s
4189 1742(ting,)s 2221(and)s 2625(the)s 2973(last)s 3364(one)s
4193 240 fnt31 0 -52(require\211fd)m
4204 240 fnt31 0 -52(ignore\211fd)m
4210 240 fnt31 0 -52(null\211fd)m
4215 240 fnt31 0 -52(reject\211fd)m
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4219 2126(par)s 2431(tic)s 2662(u)s 2777(lar)s 3088(\207le)s
4220 3449(de)s 3671(scrip)s 4128(tor)s 4453(will)s 4879(tak)s 2(e)k
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4222 240 fnt82 6909 5977(may)m 7375(be)s 7657(a)s 7823(sin)s
4223 8099(gle)s 8447(num)s 8873(-)s 480 5737(ber)m 9(,)k
4224 883(tw)s 2(o)k 1293(num)s 1719(bers)s 2168(sep)s
4225 2480(a)s 2586(rat)s 2837(ed)s 3121(by)s 3415(a)s
4226 3581(h)s 1(y)k 3814(phen,)s 4387(or)s 4646(one)s
4227 5048(num)s 5474(ber)s 5839(fol)s 6099(lo)s 6(wed)k
4228 6736(by)s 7030(a)s 7196(h)s 1(y)k 7429(phen)s
4229 7952(\(in)s 8214(di)s 8394(cat)s 8672(ing)s 480 5497(all)m
4230 772(de)s 994(scrip)s 1451(tors)s 1858(from)s 2380(that)s
4231 2796(num)s 3222(ber)s 3585(on)s 3822(w)s 2(ards\).)k
4232 4573(It)s 4776(may)s 5240(also)s 5676(be)s 5956(one)s
4233 6357(of)s 6626(the)s 6972(w)s 2(ords)k gsave
4242 240 fnt31 0 -52(stdout)m
4248 240 fnt31 0 -52(stderr)m
4250 1080 5257(.)m 1174(Open-)s 1761(ended)s
4251 2380(\207le)s 2730(de)s 2952(scrip)s 3409(tor)s 3723(rangers)s
4252 4466(are)s 4802(al)s 4969(lo)s 6(wed)k 5596(only)s
4256 240 fnt31 0 -52(reject\211fd)m
4262 0 -52(ignore\211fd)m
4264 8780(,)s 8876(as)s 480 5017(oth)m 783(er)s
4265 968(wise)s 1457(the)s 1799(ser)s 2077(vice)s 2526(pro)s
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4267 4590(self)s 5001(with)s 5477(a)s 5638(v)s 3(ery)k
4268 6108(lar)s 4(ge)k 6632(num)s 7058(ber)s 7417(of)s
4269 7683(\207le)s 8038(de)s 8260(scrip)s 8717(tors)s 480 4777(open.)m
4270 1090(When)s 1699(the)s 2027(con)s 2370(\207g)s 2616(u)s
4271 2731(ra)s 2916(tion)s 3325(has)s 3674(been)s 4163(parsed,)s
4272 4874(and)s 5258(be)s 5480(fore)s 5900(the)s 6227(ser)s
4273 6505(vice)s 6939(is)s 7129(about)s 7701(to)s 7920(be)s
4274 8181(e)s 3(x)k 8399(e)s 8501(cut)s 8793(ed,)s
4275 480 4537(stderr)m 1083(\(fd)s 1418(2\))s 1665(must)s 2189(be)s
4276 2470(re)s 2651(quired)s 3320(or)s 3578(al)s 3745(lo)s 6(wed)k
4280 240 fnt31 0 -52(require\211fd)m
4288 6573(\))s 6701(for)s 7038(writ)s 7422(ing;)s
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4290 825(er)s 1010(ror)s 1345(mes)s 1721(sage)s 2198(print)s
4291 2649(ed)s 2930(by)s 3220(the)s 3565(serv)s 3958(er')s 13(s)k
4292 4350(child)s 4882(pro)s 5194(cess)s 5640(if)s 5853(it)s
4293 6042(can)s 6371(not)s gsave
4296 240 fnt31 0 -52(exec)m
4299 7535(ser)s 7813(vice)s 8263(pro)s 8575(gram)s 480 4057(is)m
4300 690(not)s 1056(lost.)s gsave
4303 240 fnt31 0 -52(allow\211fd)m gsave
4307 0 -52(fd\211r)m 3(ang)k 2(e)k
4311 480 3468(Allo)m 6(w)k
4312 1126(the)s 1474(descriptor\(s\))s 2729(to)s 2968(be)s 3250(opened)s
4313 4000(for)s 4338(reading)s 5108(resp.)s 5610(writing,)s 6407(or)s
4314 6666(either)s 7269(if)s 7486(neither)s gsave
4317 240 fnt31 0 -52(read)m
4323 240 fnt31 0 -52(write)m
4325 1040 3228(is)m 1250(speci\207ed.)s
4326 2204(If)s 2434(a)s 2600(particular)s 3574(descriptor)s 4589(not)s
4327 4955(speci\207ed)s 5863(by)s 6157(the)s 6505(client)s 7095(then)s
4328 7564(it)s 7756(will)s 8182(be)s 8464(open)s 480 2988(onto)m
4332 240 fnt31 0 -52(/dev/null)m
4334 1920(\(for)s 2337(reading,)s 3161(writing,)s
4335 3958(or)s 4217(both,)s 4750(depending)s 5801(on)s 6098(whether)s
4339 240 fnt31 0 -52(read)m
4344 240 fnt31 0 -52(write)m
4347 7995(or)s 8254(neither)s 480 2748(w)m 2(as)k 901(speci\207ed\).)s
4351 240 fnt31 0 -52(null\211fd)m gsave
4354 240 fnt83 0 -52(fd\211r)m 3(ang)k 2(e)k
4359 480 2109(Spec)m 938(i)s 998(fy)s 1251(that)s
4360 1669(the)s 2017(de)s 2239(scrip)s 2696(tor\(s\))s 3261(be)s
4361 3543(opened)s 4293(onto)s gsave
4364 240 fnt31 0 -52(/dev/null)m
4367 6071(read)s 6480(ing)s 6839(resp.)s 7341(writ)s 7725(ing,)s
4368 8138(or)s 8397(both)s 8880(if)s 480 1869(nei)m 766(ther)s
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4377 240 fnt31 0 -52(write)m
4380 2529(is)s 2722(spec)s 3140(i)s 3200(\207ed.)s 3646(An)s 3(y)k
4381 4093(spec)s 4511(i)s 4571(\207)s 4696(ca)s 4908(tion)s
4382 5320(of)s 5574(these)s 6104(\207le)s 6448(de)s 6670(scrip)s
4383 7127(tors)s 7519(by)s 7796(the)s 8127(client)s 8700(will)s
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4385 2355(the)s 2703(client)s 3293(will)s 3719(see)s 4080(its)s
4386 4356(ends)s 4846(of)s 5117(the)s 5465(de)s 5687(scrip)s
4387 6144(tors)s 6553(be)s 6775(ing)s 7134(closed)s 7803(im)s
4388 8055(me)s 8343(di)s 8523(ate)s 8797(ly)s 15(.)k
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4395 240 fnt83 0 -52(fd\211r)m 3(ang)k 2(e)k
4400 480 995(Do)m 824(not)s 1187(allo)s 6(w)k 1764(the)s
4401 2109(descriptor\(s\))s 3362(to)s 3598(be)s 3878(speci\207ed)s 4783(by)s
4402 5075(the)s 5420(client.)s 6052(It)s 6254(is)s 6462(an)s
4403 6742(error)s 7263(if)s 7477(an)s 3(y)k 7871(descriptor\(s\))s
4404 480 755(mark)m 2(ed)k 1253(for)s 1591(rejection)s 2483(are)s
4405 2830(speci\207ed)s 3738(when)s 4314(the)s 4662(service)s 5394(is)s
4406 5604(about)s 6196(to)s 6435(be)s 6717(in)s 9(v)k 4(ok)k 2(ed)k
4407 7532(\(after)s 8107(the)s 0 52(User)m 511(service)s 1243(daemon)s
4408 2058(and)s 2462(client)s 3052(speci\207cation)s 8611(1.0.1)s
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4447 240 fnt84 0 13842(16)m 240 fnt82 480 13251(con\207guration)m 1813(has)s
4448 2183(been)s 2692(parsed\).)s gsave
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4455 0 -52(fd\211r)m 3(ang)k 2(e)k
4459 480 12617(Silent)m 1037(ly)s
4460 1260(ig)s 1439(nore)s 1902(an)s 3(y)k 2281(spec)s
4461 2699(i)s 2759(\207)s 2884(ca)s 3096(tion)s 3507(by)s
4462 3783(the)s 4113(client)s 4685(of)s 4938(those)s 5481(de)s
4463 5703(scrip)s 6160(tor\(s\).)s 6762(The)s 7172(pipes)s 7710(cor)s
4464 8015(re)s 8196(spond)s 8767(ing)s 480 12377(to)m 719(these)s
4465 1266(de)s 1488(scrip)s 1945(tors)s 2354(will)s 2780(be)s
4466 3062(closed)s 3731(just)s 4136(be)s 4358(fore)s 4798(the)s
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4479 950(es)s 1200(the)s 1548(ser)s 1826(vice')s 13(s)k
4480 2434(pro)s 2746(cess)s 3195(group)s 3807(to)s 4046(get)s
4482 4564 11557 translate
4484 240 fnt31 0 -52(SIGHUP)m
4486 5224(if)s 5441(the)s
4487 5789(client)s 6379(dis)s 6649(con)s 6992(nects)s 7534(be)s
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4489 1209(pro)s 1521(cess)s 1966(ter)s 2217(mi)s 2463(nates.)s
4491 3055 11317 translate
4493 240 fnt31 0 -52(no\211disconnect\211hup)m
4495 4813(can)s 5142(cels)s gsave
4496 5560 11317 translate
4499 0 -52(disconnect\211hup)m
4501 6961(.)s 7122(If)s 7348(one)s 7747(of)s
4502 8014(the)s 8358(read)s 8767(ing)s 480 11023(de)m 702(scrip)s
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4508 878(ed)s 1162(for)s 1500(some)s 2061(oth)s 2364(er)s
4509 2609(rea)s 2900(son,)s 3340(then)s 3809(the)s gsave
4510 4157 10836 translate
4515 4817(will)s 5243(be)s 5525(de)s 5747(li)s 6(v)k
4516 5988(ered)s 240 fnt83 6457 10784(be)m 6676(for)s 8(e)k
4517 240 fnt82 7106 10782(the)m 7454(writ)s 7838(ing)s 8197(end\(s\))s
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4519 1694(read)s 2103(ing)s 2452(pipe\(s\))s 3154(are)s 3491(closed,)s
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4521 6160(dis)s 6430(tin)s 6679(guish)s 7245(dis)s 7515(con)s
4522 7858(nec)s 8183(tion)s 8602(from)s 480 10302(read)m 889(ing)s
4523 1248(EOF)s 1758(on)s 2055(a)s 2221(pipe.)s gsave
4529 480 9668(Resets)m 1155(the)s 1503(e)s 3(x)k 3(ecution)k
4530 2484(settings)s 3265(to)s 3504(the)s 3852(def)s 2(ault.)k
4531 4617(This)s 5093(is)s 5303(equi)s 6(v)k 6(alent)k
4535 240 fnt31 0 -52(cd)m 432(~/)s 0 -292(reject)m
4536 0 -532(no\211set\211environment)m 0 -772(suppress\211args)m 0 -1012(allow\211fd)m 1296(0)s 1584(read)s
4537 0 -1252(allow\211fd)m 1296(1\2112)s 1872(write)s 0 -1492(reject\211fd)m 1440(3\211)s
4538 0 -1732(disconnect\211hup)m
4540 0 7505(If)m 230(no)s gsave
4543 240 fnt31 0 -52(execute)m
4549 240 fnt31 0 -52(execute\211from\211path)m
4555 0 -52(execute\211from\211directory)m
4560 240 fnt31 0 -52(builtin)m
4563 6630(interpreted)s 7722(before)s 8388(all)s 8681(the)s 0 7265(\207les)m
4564 449(are)s 796(read)s 1265(then)s 1734(the)s 2082(request)s
4565 2832(is)s 3042(rejected.)s 9066 670 0 670 240 240 60 0 6241 LoutGr2
4566 newpath 0 ysize 0.3 ft sub moveto
4572 320 fnt84 0 66(4.3.)m 628(Err)s 5(ors)k
4573 1618(in)s 1958(the)s 2458(con\207guration)s 4359(\207le)s
4576 230(a)s 396(syntax)s 1076(error)s 1599(or)s 1858(other)s
4577 2409(problem)s 3266(occurs)s 3941(when)s 4517(processing)s 5593(a)s
4578 5759(con\207guration)s 7092(\207le)s 7453(then)s 7922(a)s 8088(diagnostic)s
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4580 2568(the)s 2911(error)s 3429(messages)s 4378(are)s 4721(currently)s
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4589 951(will)s 1377(cause)s 1964(processing)s 3040(of)s 3311(the)s
4590 3659(con\207guration)s 4992(\207les)s 5441(to)s 5680(cease)s 6253(at)s
4591 6485(that)s 6903(point,)s 7502(unless)s 8151(the)s 8499(error)s
4592 0 4651(w)m 2(as)k 421(inside)s 1048(a)s gsave
4596 0 -52(catch\211quit)m
4598 2275(construct.)s 3255(In)s 3511(this)s 3907(case)s
4599 4374(the)s 4722(settings)s 5503(controlling)s 6605(the)s 6953(program')s 13(s)k
4600 7973(e)s 3(x)k 3(ecution)k 0 4411(will)m 426(be)s
4601 708(reset)s 1218(to)s 1457(the)s 1805(def)s 2(aults)k
4602 2610(as)s 2860(if)s 3077(a)s gsave
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4609 5598(issued,)s 6303(and)s 6707(parsing)s 7464(continues)s 8432(after)s
4613 240 fnt31 0 -52(hctac)m
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4622 320 fnt84 0 5(4.4.)m
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4670 240 fnt84 8831 13842(17)m gsave
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4674 1728(~/.userv/rc)s 0 -532(errors\211to\211stderr)m 0 -772(include)m 1152(/etc/userv/system.default)s 0 -1012(if)m
4675 432(grep)s 1152(service\211user\211shell)s 3888(/etc/shells)s 432 -1252(errors\211push)m 720 -1492(catch\211quit)m
4676 1008 -1732(include\211ifexist)m gsave
4677 3312 -1680 translate
4679 240 fnt83 0 -52(\207le)m 345(speci\207ed)s 1248(by)s
4680 1530(most)s 2046(r)s 8(ecent)k 2699(user\211r)s 8(c\207le)k
4681 3767(dir)s 8(ective)k
4683 720 -1972(hctac)m 432 -2212(srorre)m 0 -2452(fi)m
4684 0 -2692(include)m 1152(/etc/userv/system.override)s 0 -2932(quit)m
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4687 226(one)s 624(of)s 891(the)s gsave
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4693 2292(options)s 3044(to)s 3279(the)s 3623(client)s 4209(is)s
4694 4415(used)s 4908(then)s 5373(it)s 5561(will)s 5983(instead)s
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4697 1752(con\207guration)s 3085(as)s 3335(follo)s 6(ws:)k gsave
4701 0 -52(reset)m 0 -292(errors\211to\211stderr)m 0 -532(include)m gsave
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4706 3695(by)s 3977(client)s
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4750 240 fnt84 0 13842(18)m gsave
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4754 newpath 0 ysize 0.3 ft sub moveto
4760 340 fnt84 0 70(5.)m 412(Inf)s 8(ormation)k
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4772 3892(program)s 4747(to)s 4971(in)s 9(v)k 4(ok)k 2(e,)k
4773 5701(in)s 5929(the)s gsave
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4776 240 fnt31 0 -52(service)m
4778 7008(parameter)s 9(,)k
4779 8045(and)s 8434(is)s 8629(used)s 480 11136(by)m 774(the)s
4781 1122 11190 translate
4783 240 fnt31 0 -52(execute\211from\211directory)m
4786 3788 11190 translate
4788 240 fnt31 0 -52(execute\211from\211path)m
4791 5550(con\207guration)s 6883(directi)s 6(v)k 3(es.)k 7906(It)s
4792 8111(is)s 8321(usually)s 480 10896(used)m 977(to)s 1216(select)s
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4794 5043(It)s 5248(is)s 5458(also)s 5896(passed)s 6592(to)s
4795 6831(the)s 7179(service)s 7911(program)s 8781(in)s 480 10656(the)m
4799 240 fnt31 0 -52(USERV_SERVICE)m
4801 2189(en)s 9(vironment)k 3449(v)s 6(ariable.)k
4802 0 10225(\213)m 480(File)s 902(descriptors)s 1995(speci\207ed)s 2897(by)s
4803 3185(the)s 3528(client)s 4112(and)s 4510(allo)s 6(wed)k
4804 5313(according)s 6304(to)s 6537(the)s 6879(con\207guration)s 8206(language)s
4805 480 9985(will)m 906(be)s 1188(connected.)s 2262(Each)s 2797(\207le)s
4806 3158(descriptor)s 4173(is)s 4383(opened)s 5133(for)s 5471(reading)s
4807 6241(or)s 6500(writing.)s 7294(Communication)s 8893(is)s 480 9745(via)m
4808 832(pipes,)s 1444(one)s 1846(end)s 2250(of)s 2521(each)s
4809 3016(pipe)s 3484(being)s 4069(open)s 4592(on)s 4889(the)s
4810 5237(appropriate)s 6381(\207le)s 6742(descriptor)s 7757(in)s 8000(the)s
4811 8348(service)s 480 9505(program)m 1347(\(when)s 1999(it)s 2188(is)s
4812 2394(in)s 9(v)k 4(ok)k 2(ed\))k 3276(and)s
4813 3677(the)s 4022(other)s 4569(end)s 4970(being)s 5552(held)s
4814 6019(by)s 6309(the)s 6654(client)s 7241(process,)s 8062(which)s
4815 8700(will)s 480 9265(read)m 942(and)s 1339(write)s 1878(\207les)s
4816 2320(it)s 2505(opens)s 3108(on)s 3398(behalf)s 4060(of)s
4817 4324(its)s 4593(caller)s 5175(or)s 5427(\207le)s 5781(descriptors)s
4818 6873(it)s 7058(is)s 7261(passed)s 7950(by)s 8237(its)s
4819 8506(caller)s 13(.)k 480 9025(Data)m 991(may)s 1457(be)s
4820 1739(passed)s 2435(into)s 2860(the)s 3208(service)s 3940(through)s
4821 4742(reading)s 5512(pipes)s 6068(and)s 6472(out)s 6838(of)s
4822 7109(it)s 7301(through)s 8103(writing)s 480 8785(pipes.)m 1083(These)s
4823 1703(pipes)s 2252(can)s 2634(remain)s 3347(open)s 3864(only)s
4824 4337(until)s 4823(the)s 5164(service)s 5889(and)s 6287(client)s
4825 6870(ha)s 4(v)k 3(e)k 7364(terminated,)s 8485(or)s
4826 8737(can)s 480 8545(be)m 762(made)s 1336(to)s 1575(stay)s
4827 2014(open)s 2537(after)s 3033(the)s 3381(client)s 3971(has)s
4828 4341(terminated)s 5420(and)s 5824(\(if)s 6120(the)s 6468(service)s
4829 7200(program)s 8070(forks\))s 8689(the)s 480 8305(main)m 998(service)s
4830 1712(process)s 2462(has)s 2814(e)s 3(xited;)k 3489(the)s
4831 3820(beha)s 4(viour)k 4815(is)s 5007(controlled)s 6016(by)s
4832 6292(options)s 7031(passed)s 7709(to)s 7930(the)s 8260(client)s
4833 8832(by)s 480 8065(its)m 751(caller)s 13(.)k 1426(The)s
4834 1848(caller)s 2432(can)s 2816(arrange)s 3582(that)s 3995(a)s
4835 4156(writing)s 4893(pipe)s 5356(be)s 5633(connected)s 6655(to)s
4836 6889(a)s 7050(pipe)s 7512(or)s 7766(similar)s 8482(object)s
4837 480 7825(and)m 884(cause)s 1471(attempts)s 2331(to)s 2570(write)s
4838 3116(to)s 3355(that)s 3773(descriptor)s 4788(by)s 5082(the)s
4839 5430(service)s 6162(to)s 6401(generate)s 7266(a)s gsave
4848 240 fnt31 0 -52(EPIPE)m
4854 240 fnt31 0 -52(SIGPIPE)m
4856 1431(is)s 1628(caught)s 2313(or)s
4857 2559(ignored\))s 3405(in)s 3635(the)s 3970(service.)s 4797(Lik)s 2(e)k 6(wise,)k
4858 5759(the)s 6094(service)s 6813(can)s 7189(close)s 7722(\207ledescriptors)s
4859 480 7345(speci\207ed)m 1373(for)s 1696(reading,)s 2505(which)s 3132(will)s
4860 3543(cause)s 4115(the)s 4448(corresponding)s 5855(\207ledescriptors)s 7244(passed)s
4861 7925(by)s 8204(the)s 8537(caller)s 480 7105(to)m 716(be)s
4862 995(closed,)s 1709(so)s 1972(that)s 2387(if)s 2600(these)s
4863 3144(are)s 3488(pipes)s 4040(processes)s 5004(which)s 5643(write)s
4864 6185(to)s 6421(them)s 6956(will)s 7378(recei)s 6(v)k 3(e)k
4868 240 fnt31 0 -52(SIGPIPE)m
4873 240 fnt31 0 -52(EPIPE)m
4876 980 6865(.)m 0 6460(\213)m 480(If)s gsave
4879 240 fnt31 0 -52(no\211suppress\211args)m
4882 2363(is)s 2568(set)s 2888(then)s 3353(ar)s 4(guments)k
4883 4391(passed)s 5082(to)s 5316(the)s 5660(client)s 6245(by)s
4884 6534(its)s 6805(caller)s 7390(will)s 7811(be)s 8088(passed)s
4885 8779(on,)s 480 6220(v)m 3(erbatim,)k 1433(to)s 1672(the)s
4886 2020(service.)s 0 5784(\213)m 480(F)s 3(a)k 716(tal)s
4887 1009(sig)s 1281(nals)s 1717(and)s 2121(sys)s 2418(tem)s
4888 2836(call)s 3235(f)s 2(ail)k 3545(ures)s 3994(e)s 3(x)k
4889 4212(pe)s 4434(ri)s 4573(enced)s 5189(by)s 5483(the)s
4890 5831(client)s 6421(will)s 6847(re)s 7028(sult)s 7433(in)s
4891 7676(the)s 8024(dis)s 8294(con)s 8637(nec)s 8962(-)s
4892 480 5544(tion)m 909(of)s 1180(the)s 1528(ser)s 1806(vice)s
4893 2260(from)s 2784(the)s 3132(client)s 3722(and)s 4126(pos)s
4894 4450(si)s 4603(bly)s 4963(some)s 5524(of)s 5795(the)s
4895 6143(com)s 6555(mu)s 6856(ni)s 7036(ca)s 7248(tion)s
4896 7677(\207le)s 8038(de)s 8260(scrip)s 8717(tors)s 480 5304(de)m
4897 702(scribed)s 1450(abo)s 3(v)k 3(e;)k 2128(if)s
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4903 3806(is)s 4016(set)s 4341(then)s
4904 4810(the)s 5158(ser)s 5436(vice)s 5890(will)s 6316(also)s
4905 6754(be)s 7036(sent)s 7481(a)s gsave
4908 240 fnt31 0 -52(SIGHUP)m
4911 8247(.)s 0 4868(\213)m 480(The)s 908(v)s 6(alue)k
4912 1476(of)s 1747(the)s gsave
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4921 240 fnt31 0 -52(USER)m
4923 3593(\))s 3721(en)s 9(vironment)k
4924 4981(v)s 6(ariable)k 5800(as)s 6050(passed)s 6746(to)s
4925 6985(the)s 7333(client)s 7923(will)s 8349(be)s 480 4628(used)m
4926 977(as)s 1227(the)s 1575(login)s 2124(name)s 2698(of)s
4927 2969(the)s 3317(calling)s 4020(user)s 4478(if)s 4695(the)s
4928 5043(uid)s 5407(of)s 5678(the)s 6026(calling)s 6729(process)s
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4930 2141(that)s 2559(login)s 3108(name.)s 3730(Otherwise)s 4768(the)s
4931 5116(calling)s 5819(uid')s 13(s)k 6335(passw)s 2(ord)k
4932 7295(entry)s 7840(will)s 8266(be)s 8548(used)s 480 4148(to)m
4933 708(determine)s 1708(the)s 2045(calling)s 2737(user')s 13(s)k
4934 3334(login)s 3872(name.)s 4543(This)s 5007(login)s 5545(name)s
4935 6108(and)s 6501(the)s 6838(calling)s 7530(uid)s 7883(are)s
4936 8218(a)s 4(v)k 6(ailable)k 480 3908(in)m 723(the)s
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4941 0 -52(calling\211user)m
4943 5176(parameter)s 6190(and)s 6594(are)s 6941(passed)s
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4945 1561(en)s 9(vironment)k 2805(v)s 6(ariables)k gsave
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4957 6178(The)s 6590(shell)s 7080(corresponding)s 8486(to)s 8708(that)s
4958 480 3428(login)m 1023(name)s 1591(\(according)s 2659(to)s 2892(the)s
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4960 5904(as)s 6148(in)s 6384(the)s 6726(con\207guration)s 8052(language')s 13(s)k
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4966 2342 3188(parameter)m 13(.)k 3447(If)s
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4974 1380(in)s 1615(the)s 1955(con\207guration)s 3280(language)s 4192(in)s
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4980 6119(parameter)s 7125(and)s
4981 7521(are)s 7860(passed)s 8548(to)s 8778(the)s 480 2062(service)m
4982 1212(in)s 1455(en)s 9(vironment)k 2715(v)s 6(ariables.)k
4983 3735(If)s 3965(no)s 4258(name)s 4832(can)s 5221(be)s
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4990 4845(which)s 5487(the)s 5835(client)s 6425(w)s 2(as)k
4991 6846(in)s 9(v)k 4(ok)k 2(ed)k 7661(is)s
4992 7871(passed,)s 8616(if)s 480 1127(a)m 4(v)k 6(ailable)k
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5006 8188(v)s 6(ariable.)k 480 887(This)m 946(grants)s 1570(no)s
5007 1852(special)s 2560(access)s 3210(to)s 3438(that)s 3846(directory)s
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5057 240 fnt31 0 -52(\211\211defvar)m
5061 240 fnt83 0 -52(name)m
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5071 6432(option)s 7101(to)s 7340(the)s 7688(client)s 8278(are)s
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5073 1979(con\207guration)s 3312(language)s 4232(as)s 4482(the)s 4830(corresponding)s
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5085 8116(and)s 8520(are)s 480 12314(passed)m 1176(to)s 1415(the)s
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5090 240 fnt31 0 -52(USERV_U_)m gsave
5098 7082(.)s 0 11859(\213)m 480(If)s 710(the)s
5099 1058(calling)s 1761(user)s 2219(is)s 2429(root)s 2874(or)s
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5175 2440 11242 translate
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5186 240 fnt31 0 -52(README)m
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5456 1233 11700 translate
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5460 1489(user\))s 2010(the)s
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5464 6720 11700 translate
5466 240 fnt31 0 -52(cat)m
5468 7076(\(or)s 7409(a)s
5469 7570(special-purpose)s 0 11406(\207le-reading)m 1140(program\))s 2063(as)s 2299(an)s 3(y)k
5470 2681(user)s 13(.)k 3155(The)s gsave
5471 3569 11460 translate
5473 240 fnt31 0 -52(lpr)m
5476 3914(program)s 4769(w)s 2(ould)k 5410(use)s 5770(a)s
5478 5922 11460 translate
5480 240 fnt31 0 -52(userv)m
5482 6467(service)s 7184(to)s 7409(store)s
5483 7914(the)s 8247(\207lename)s 0 11166(in)m 243(the)s 591(printer)s
5484 1287(daemon')s 13(s)k 2255(queues,)s 3027(and)s 3431(the)s
5485 3779(daemon)s 4594(w)s 2(ould)k 5249(read)s 5718(the)s
5486 6066(\207le)s 6427(later)s 6910(when)s 7486(it)s 7678(felt)s
5487 8055(lik)s 2(e)k 8467(it.)s 0 10758(Ho)m 6(we)k 6(v)k 3(er)k 9(,)k
5488 960(this)s 1356(w)s 2(ould)k 2011(allo)s 6(w)k
5489 2590(the)s 2938(printer)s 3634(daemon)s 4449(to)s 4688(read)s
5490 5157(an)s 3(y)k 5554(\207le)s 5915(on)s 6212(the)s
5491 6560(system,)s 7331(whether)s 8161(or)s 8420(not)s 0 10518(someone)m
5492 907(had)s 1311(ask)s 2(ed)k 1912(for)s 2250(it)s
5493 2442(to)s 2681(be)s 2963(printed.)s 3744(Since)s 4331(man)s 3(y)k
5494 4914(\207les)s 5363(will)s 5789(contain)s 6550(passw)s 2(ords)k
5495 7596(and)s 8000(other)s 0 10278(security-critical)m 1551(information)s 2736(this)s
5496 3132(is)s 3342(nearly)s 3993(as)s 4243(bad)s 4647(as)s
5497 4897(gi)s 6(ving)k 5556(the)s 5904(daemon)s 6719(root)s
5498 7164(access)s 7825(in)s 8068(the)s 8416(\207rst)s 0 10038(place.)m
5499 608(An)s 3(y)k 1072(security)s 1882(holes)s 2438(in)s
5500 2681(the)s 3029(print)s 3540(serv)s 3(er)k 4180(which)s
5501 4822(allo)s 6(w)k 5401(a)s 5567(user)s 6025(to)s
5502 6264(e)s 3(x)k 3(ecute)k 7044(commands)s 8132(as)s
5504 8730 10092 translate
5506 240 fnt31 0 -52(lp)m
5508 0 9798(user)m 458(will)s
5509 884(gi)s 6(v)k 3(e)k 1343(the)s 1691(user)s
5510 2149(the)s 2497(ability)s 3161(to)s 3400(read)s 3869(an)s 3(y)k
5511 4266(\207le)s 4627(on)s 4924(the)s 5272(system.)s 0 9390(Instead,)m
5512 790(it)s 975(is)s 1178(necessary)s 2153(to)s 2385(k)s 2(eep)k
5513 2881(a)s 3040(record)s 3700(of)s 3964(which)s 4599(\207les)s
5514 5040(the)s 5381(daemon)s 6189(has)s 6552(been)s 7053(ask)s 2(ed)k
5515 7647(to)s 7879(print)s 240 fnt83 8382 9392(outside)m 240 fnt82
5516 0 9150(the)m 348(control)s 1080(of)s 1351(the)s 1699(print)s
5517 2210(daemon.)s 3072(This)s 3548(record)s 4216(could)s 4806(be)s
5518 5088(k)s 2(ept)k 5558(by)s 5852(a)s 6018(ne)s 6(w)k
5519 6465(root-pri)s 6(vile)k 3(ged)k 7947(component,)s 0 8910(b)m 4(ut)k
5520 352(this)s 737(is)s 936(not)s 1291(necessary:)s 2315(the)s
5521 2652(record)s 3309(of)s 3569(which)s 4200(\207les)s 4638(a)s
5522 4794(user)s 5241(has)s 5600(ask)s 2(ed)k 6190(to)s
5523 6418(be)s 6689(printed)s 7413(can)s 7791(be)s 8062(k)s 2(ept)k
5524 8521(under)s 0 8670(the)m 348(control)s 1080(of)s 1351(the)s
5525 1699(user)s 2157(in)s 2400(question.)s 3315(The)s 3743(submission)s
5526 4877(program)s gsave
5529 240 fnt31 0 -52(lpr)m
5531 6107(will)s 6533(mak)s 2(e)k
5532 7105(a)s 7271(record)s 7939(in)s 8182(an)s 8465(area)s
5533 0 8430(under)m 605(the)s 953(user')s 13(s)k 1561(control)s
5534 2293(before)s 2959(communicating)s 4500(with)s 4982(the)s 5330(print)s
5535 5841(serv)s 3(er)k 9(,)k 6519(and)s 6923(the)s
5536 7271(print)s 7782(serv)s 3(er)k 8422(w)s 2(ould)k
5537 0 8190(be)m 279(gi)s 6(v)k 3(en)k 855(the)s
5538 1199(ability)s 1859(to)s 2094(run)s 2466(a)s 2628(special)s
5539 3342(\207le-reading)s 4493(program)s 5359(which)s 5997(w)s 2(ould)k
5540 6648(only)s 7124(allo)s 6(w)k 7699(\207les)s 8144(to)s
5541 8379(be)s 8657(read)s 0 7950(which)m 642(were)s 1162(listed)s
5542 1737(in)s 1980(the)s 2328(user')s 13(s)k 2936(\207le)s
5543 3297(of)s 3568(things)s 4204(the)s 3(y')k 12(d)k
5544 4858(ask)s 2(ed)k 5459(to)s 5698(print.)s 0 7542(No)m 6(w)k
5545 502(security)s 1300(holes)s 1844(in)s 2075(most)s 2588(of)s
5546 2846(the)s 3182(printing)s 3980(system)s 4692(do)s 4973(not)s
5547 5327(critically)s 6215(af)s 6(fect)k 6799(the)s 7135(security)s
5548 7933(of)s 8192(the)s 8527(entire)s 0 7302(system:)m 770(the)s 3(y)k
5549 1233(only)s 1713(allo)s 6(w)k 2292(the)s 2640(attack)s 2(er)k
5550 3453(to)s 3692(read)s 4161(and)s 4565(interfere)s 5428(with)s
5551 5910(print)s 6421(jobs.)s 6924(Bugs)s 7468(in)s 7711(the)s
5552 8059(programs)s 0 7062(run)m 373(by)s 664(the)s 1009(print)s
5553 1517(serv)s 3(er)k 2154(to)s 2390(read)s 2856(users')s
5554 3456(\207les)s 3902(\(and)s 4382(to)s 4618(remo)s 3(v)k 3(e)k
5555 5382(entries)s 6066(from)s 6587(the)s 6932(list)s 7280(of)s
5556 7548(\207les)s 7994(when)s 8567(it)s 8756(has)s 0 6822(done)m
5557 522(with)s 1004(them\))s 1610(will)s 2036(still)s 2448(be)s
5558 2730(serious,)s 3514(b)s 4(ut)k 3876(this)s 4272(program)s
5559 5142(can)s 5531(be)s 5813(quite)s 6347(simple.)s 0 6414(Similar)m
5560 762(considerations)s 2194(apply)s 2780(to)s 3019(man)s 3(y)k
5564 240 fnt31 0 -52(userv)m
5566 4102(-based)s 4784(v)s 3(ersions)k
5567 5629(of)s 5900(f)s 2(acilities)k 6769(which)s 7411(currently)s
5568 8327(run)s 0 6174(as)m 250(root.)s 0 5766(It)m 198(is)s
5569 401(debatable)s 1366(whether)s 2189(the)s 2530(user)s 4(-controlled)k
5570 4023(state)s 4509(should)s 5199(be)s 5474(k)s 2(ept)k
5571 5937(in)s 6173(the)s 6514(user')s 13(s)k 7115(\207lespace)s
5572 8000(\(in)s 8315(dot\207les,)s 0 5526(say\))m 440(or)s 692(k)s 2(ept)k
5573 1155(in)s 1391(a)s 1550(separate)s 2381(area)s 2831(set)s
5574 3149(aside)s 3688(for)s 4019(the)s 4360(purpose;)s 5223(ho)s 6(we)k 6(v)k 3(er)k 9(,)k
5575 6123(using)s 6688(the)s 7029(user')s 13(s)k 7630(home)s
5576 8210(directory)s 0 5286(\(and)m 483(possibly)s 1335(creating)s 2157(a)s
5577 2323(separate)s 3161(subdirectory)s 4410(of)s 4681(it)s 4873(as)s
5578 5123(a)s 5289(dot\207le)s 5956(to)s 6195(contain)s 6956(subsystem)s
5579 8013(state\))s 0 5046(has)m 370(fe)s 6(wer)k 967(implications)s
5580 2199(for)s 2537(the)s 2885(rest)s 3289(of)s 3560(the)s
5581 3908(system)s 4632(and)s 5036(mak)s 2(es)k 5696(it)s
5582 5888(entirely)s 6671(clear)s 7194(where)s 7834(the)s 8182(security)s
5583 0 4806(boundaries)m 1101(lie.)s 9066 670 0 670 240 240 60 0 3782 LoutGr2
5584 newpath 0 ysize 0.3 ft sub moveto
5590 320 fnt84 0 66(6.5.)m gsave
5596 1375(can)s 1929(often)s 2695(r)s 5(eplace)k
5600 320 fnt31 0 -70(sudo)m
5602 4292(,)s 4444(b)s 6(ut)k
5606 320 fnt31 0 -70(really)m
5613 240 fnt31 0 -52(userv)m
5616 559 3320(is)m 768(not)s 1133(in)s 1316(tend)s 1726(ed)s
5617 2009(as)s 2258(a)s 2423(general-)s 3194(purpose)s 4007(sys)s
5618 4304(tem)s 4721(ad)s 4945(min)s 5314(is)s 5464(tra)s
5619 5715(tion)s 6143(tool)s 6569(with)s 7050(which)s 7691(sys)s
5620 7988(tem)s 8405(ad)s 8629(min)s 8998(-)s 0 3080(is)m
5621 150(tra)s 401(tors)s 801(can)s 1181(e)s 3(x)k
5622 1399(e)s 1501(cute)s 1946(ar)s 2131(bi)s 2311(trary)s
5623 2806(pro)s 3118(grams)s 3744(lik)s 2(e)k 4147(te)s 3(xt)k
5624 4553(ed)s 4777(i)s 4837(tors)s 5236(as)s 5477(root)s
5625 5913(\(or)s 6242(oth)s 6545(er)s 6781(sys)s 7078(tem)s
5626 7487(users\))s 8097(when)s 8663(the)s 3(y)k 0 2840(need)m
5627 501(to.)s 782(It)s 978(is)s 1179(un)s 1416(suit)s
5628 1761(able)s 2205(for)s 2534(this)s 2921(pur)s 3240(pose)s
5629 3726(pre)s 4027(cise)s 4394(ly)s 4625(be)s 4847(cause)s
5630 5424(it)s 5607(en)s 5830(forces)s 6455(a)s 6612(strong)s
5631 7254(sep)s 7566(a)s 7672(ra)s 7857(tion)s 8276(be)s
5632 8498(tween)s 0 2600(the)m 348(call)s 687(ing)s 1046(and)s
5633 1450(the)s 1798(called)s 2426(pro)s 2738(gram,)s 3336(which)s
5634 3978(is)s 4188(un)s 4425(de)s 4647(sir)s 4885(able)s
5635 5339(in)s 5582(this)s 5978(con)s 6321(te)s 3(xt.)k
5636 0 2192(Ho)m 6(we)k 6(v)k 3(er)k 9(,)k
5637 951(its)s 1217(use)s 1582(when)s 2148(restricted)s 3084(to)s
5638 3313(running)s 4101(particular)s 5065(programs)s 6009(in)s 6243(particular)s
5639 7207(w)s 2(ays)k 7738(is)s 7938(v)s 3(ery)k
5640 8404(similar)s 0 1924(to)m 239(man)s 3(y)k 822(common)s
5641 1717(uses)s 2180(of)s gsave
5644 240 fnt31 0 -52(sudo)m
5647 2851 2013(1)m 240 fnt82 2911 1924(.)m gsave
5650 240 fnt31 0 -52(userv)m
5653 3575(is)s 3785(generally)s 4728(much)s 5317(better)s 5920(than)s
5654 6389(restricted)s gsave
5657 240 fnt31 0 -52(sudo)m
5659 7734(,)s 7841(because)s
5660 8654(it)s 0 1684(protects)m 796(the)s 1132(called)s 1748(program)s
5661 2607(much)s 3184(more)s 3719(strongly)s 4545(from)s 5058(bad)s
5662 5450(en)s 9(vironmental)k 6865(conditions)s 7902(set)s 8215(up)s
5663 8496(by)s 8778(the)s 1134 0 0 0 240 240 60 0 1177 LoutGr2
5664 0 0 moveto xsize 0 lineto stroke
5668 122 fnt82 0 982(1)m gsave
5674 192 fnt82 425 912(is)m 593(a)s 726(program)s
5675 1422(which)s 1936(allo)s 4(ws)k 2472(users)s 2905(to)s
5676 3097(e)s 2(x)k 2(ecute)k 3723(certain)s 4289(programs)s
5677 5052(as)s 5252(root,)s 5646(according)s 6444(to)s 6636(con\207guration)s
5678 7703(\207les)s 8062(speci\207ed)s 8789(by)s 0 682(the)m 279(system)s
5679 858(administrator)s 10(.)k 240 fnt82 0 52(User)m 511(service)s
5680 1243(daemon)s 2058(and)s 2462(client)s 3052(speci\207cation)s 8611(1.0.1)s
5691 %%PageResources: font Times-Roman
5693 %%+ font Courier-Bold
5695 0.0500 dup scale 10 setlinewidth
5699 240 fnt82 0.0 0.0 0.0 setrgbcolor 11900 16840 0 16840 240 240 60 LoutGraphic
5714 1417 -15423 translate
5715 240 fnt82 0.0 0.0 0.0 setrgbcolor 9066 14006 0 14006 240 240 60 LoutGraphic
5719 240 fnt84 0 13842(22)m 240 fnt82 0 13254(caller)m 13(.)k
5720 604(Most)s 1140(programs)s 2077(that)s 2479(one)s 2864(might)s
5721 3466(w)s 2(ant)k 3972(to)s 4195(run)s 4554(via)s
5722 4890(restricted)s gsave
5723 5818 13308 translate
5725 240 fnt31 0 -52(sudo)m
5727 6218(,)s 6309(ha)s 4(v)k 3(e)k
5728 6793(not)s 7143(been)s 7635(designed)s 8528(to)s 8750(run)s
5729 0 13014(in)m 243(a)s 409(partially)s 1258(hostile)s 1951(en)s 9(vironment.)k
5731 3255 13068 translate
5733 240 fnt31 0 -52(userv)m
5735 3815(allo)s 6(ws)k 4484(these)s
5736 5031(programs)s 5985(to)s 6224(be)s 6506(run)s 6882(in)s
5737 7125(a)s 7291(safer)s 7814(en)s 9(vironment)k 0 12774(and)m
5738 404(should)s 1101(be)s 1383(used)s 1880(instead.)s 9066 671 0 671 240 240 60 0 11749 LoutGr2
5739 newpath 0 ysize 0.3 ft sub moveto
5746 0 66(6.6.)m 628(Err)s 5(or)k 1499(handling)s 2778(and)s
5747 3365(input)s 4170(str)s 5(eams)k 5301(\(eg)s 5784(stdin\))s
5750 0 11287(When)m 610(the)s 938(service)s 1651(program)s 2501(is)s
5751 2692(reading)s 3442(from)s 3947(a)s 4093(\207le)s 4435(descriptor)s
5752 5430(connected)s 6439(to)s 6658(the)s 6987(calling)s 7670(side,)s
5753 8143(the)s 8471(fd)s 8708(that)s 0 11047(the)m 348(service)s
5754 1080(program)s 1950(refers)s 2543(to)s 2782(a)s 2948(pipe)s
5755 3416(set)s 3741(up)s 4034(by)s gsave
5756 4328 11101 translate
5758 240 fnt31 0 -52(userv)m
5761 4888(and)s 5292(not)s 5658(to)s 5897(the)s 6245(same)s
5762 6792(object)s 7436(as)s 7686(w)s 2(as)k 8107(presented)s
5763 0 10807(by)m 294(the)s 642(caller)s 13(.)k 0 10399(Therefore)m
5764 988(if)s 1195(there)s 1718(is)s 1918(some)s 2469(kind)s
5765 2943(of)s 3205(error)s 3718(it)s 3900(is)s 4100(possible)s
5766 4930(for)s 5258(the)s 5597(service-side)s 6783(fd)s 7030(to)s
5767 7259(gi)s 6(v)k 3(e)k 7708(premature)s 8722(end)s
5768 0 10159(of)m 271(\207le.)s 680(If)s 910(it)s 1102(is)s
5769 1312(important)s 2301(to)s 2540(tell)s 2899(whether)s 3729(all)s
5770 4022(of)s 4293(the)s 4641(intended)s 5523(data)s 5981(has)s
5771 6351(been)s 6860(recei)s 6(v)k 3(ed)k 7718(by)s
5772 8012(the)s 8360(service)s 0 9919(program,)m 917(the)s 1265(datastream)s
5773 2359(must)s 2884(contain)s 3645(an)s 3928(e)s 3(xplicit)k
5774 4701(end-of-\207le)s 5765(indication)s 6778(of)s 7049(some)s 7610(kind.)s
5775 0 9511(F)m 3(or)k 385(e)s 3(xample,)k 1294(consider)s
5779 240 fnt31 0 -52(userv)m
5781 2876(service)s 3603(for)s
5782 3936(submitting)s 5008(a)s 5169(mail)s 5643(message,)s 6556(where)s
5783 7191(message)s 8052(is)s 8257(supplied)s 0 9271(on)m 297(the)s
5784 645(service')s 13(s)k 1531(stdin.)s 2100(Ho)s 6(we)k 6(v)k 3(er)k 9(,)k
5785 3060(if)s 3277(the)s 3625(calling)s 4328(process)s 5096(is)s
5786 5306(interrupted)s 6412(before)s 7078(it)s 7270(has)s 7640(written)s
5787 8373(all)s 8666(of)s 0 9031(the)m 347(message,)s 1262(the)s
5788 1608(service)s 2339(program)s 3207(will)s 3631(get)s 3982(EOF)s
5789 4490(on)s 4785(the)s 5132(message)s 5996(data.)s 6496(In)s
5790 6751(a)s 6915(nai)s 6(v)k 3(e)k 7478(arrangement)s
5791 8730(this)s 0 8791(w)m 2(ould)k 655(cause)s 1242(a)s
5792 1408(half-complete)s 2790(message)s 3656(to)s 3895(be)s 4177(sent.)s
5793 4666(T)s 19(o)k 4966(pre)s 6(v)k 3(ent)k
5794 5734(this,)s 6186(it)s 6378(is)s 6588(necessary)s 7571(to)s
5795 7810(adopt)s 8402(some)s 0 8551(kind)m 484(of)s 755(e)s 3(xplicit)k
5796 1528(end)s 1932(indication;)s 3000(for)s 3338(e)s 3(xample,)k
5797 4252(the)s 4600(end)s 5004(of)s 5275(the)s 5623(message)s
5798 6489(could)s 7079(be)s 7361(signalled)s 8282(by)s 8576(a)s
5799 8742(dot)s 0 8311(on)m 297(a)s 463(line)s 877(by)s
5800 1171(itself,)s 1754(and)s 2158(dots)s 2608(doubled,)s 3487(as)s
5801 3737(in)s 3980(SMTP)s 26(.)k 4683(Then)s 5232(the)s
5802 5580(service)s 6312(program)s 7182(w)s 2(ould)k 7837(kno)s 6(w)k
5803 8418(when)s 0 8071(the)m 348(entire)s 947(message)s 1813(had)s
5804 2217(been)s 2726(recei)s 6(v)k 3(ed,)k 3633(and)s
5805 4037(could)s 4627(a)s 4(v)k 4(oid)k 5209(queueing)s
5806 6140(incomplete)s 7258(messages.)s 9066 670 0 670 240 240 60 0 7047 LoutGr2
5807 newpath 0 ysize 0.3 ft sub moveto
5813 320 fnt84 0 66(6.7.)m 628(Don't)s
5814 1488(gi)s 3(v)k 3(e)k 2107(access)s 3013(to)s
5815 3352(general-pur)s 3(pose)k 5640(utilities)s
5817 0 6585(Do)m 346(not)s
5818 712(specify)s 1456(general)s 2214(purpose)s 3028(programs)s 3982(lik)s 2(e)k
5822 240 fnt31 0 -52(mv)m
5827 240 fnt31 0 -52(cat)m
5833 240 fnt31 0 -52(execute\211)m
5835 6377(directi)s 6(v)k 3(es)k
5836 7347(without)s 8138(careful)s 0 6345(thought)m 792(about)s 1384(their)s
5837 1881(ar)s 4(guments,)k 2980(and)s 3384(certainly)s 4273(not)s
5841 240 fnt31 0 -52(no\211suppress\211args)m
5843 6518(is)s 6728(speci\207ed.)s
5844 7682(If)s 7912(you)s 8327(do)s 8620(so)s 8886(it)s
5845 0 6105(will)m 426(gi)s 6(v)k 3(e)k 885(the)s
5846 1233(caller)s 1822(much)s 2411(more)s 2958(pri)s 6(vilige)k
5847 3817(than)s 4286(you)s 4701(probably)s 5606(intend.)s 0 5697(It)m
5848 205(is)s 415(a)s 581(shame)s 1248(that)s 1666(I)s
5849 1801(ha)s 4(v)k 3(e)k 2302(to)s 2541(say)s
5850 2914(this)s 3310(here,)s 3828(b)s 4(ut)k 4190(ine)s 3(xperienced)k
5851 5586(administrators)s 7003(ha)s 4(v)k 3(e)k 7504(made)s
5852 8078(similar)s 0 5457(mistak)m 2(es)k 885(with)s 1367(programs)s
5853 2321(lik)s 2(e)k gsave
5856 240 fnt31 0 -52(sudo)m
5859 0 52(1.0.1)m 4809(User)s 5320(service)s 6052(daemon)s 6867(and)s
5860 7271(client)s 7861(speci\207cation)s
5869 %%DocumentNeededResources: font Courier-Bold
5870 %%+ font Times-Roman
5871 %%+ font Times-Italic
5873 %%DocumentSuppliedResources: procset LoutStartUp
5874 %%+ procset LoutMarginNotes
~ian / userv.git / blob