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📄 chroot.2

📁 操作系统设计与实现源码
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%!PS-Adobe-1.0%%Creator: devps (Pipeline Associates, Inc.)%%CreationDate: Fri Sep 13 13:05:36 1996%%Pages: (atend)%%DocumentFonts: (atend)/devps 180 dict def devps begin/res 10.000000 def/y_offset 843 def/X{exch}bind def/mm {transform round X round X itransform} bind def/r{rmoveto}bind def/m{moveto}bind def/l{lineto}bind def/rl{rlineto}bind def/st{stroke}bind def/gs{gsave}bind def/gr{grestore}bind def/cp{currentpoint}bind def/np{newpath}bind def/ct{curveto}bind defsystemdict /setpacking known { /savepacking currentpacking def true setpacking } if/m0{0 0 moveto}bind def/xc{//res div}bind def/yc{//res neg div //y_offset add}bind def/lc{yc X xc X l st}bind def/mc{yc X xc X m}bind def/el{gs /a X def a div 1 X scale cp np a xc 2 div 0 360 arc st gr}bind def/ar{cp 7 2 roll np xc 5 1 roll atan 3 1 roll atan X arc st}bind def/sp{yc X xc X 6 2 roll yc X xc X 6 2 roll yc X xc X 6 2 roll ct}bind def/V{//res neg div //y_offset addcurrentpoint pop Xm}bind def/H{//res div0 transform X round X itransform popcurrentpoint X popmoveto}bind def/h{//res div 0 r}bind def/v{//res neg div 0 X r}bind def/S{X H show}bind def/A{H //res div 1 index stringwidth pop sub 1 index length div 0 3 2 roll ashow}bind def/psize 10 def/height 0 def/cheight { height 0 ne { height } { psize } ifelse } bind def/slant 0 def/FF{findfont X dup 30 div 0 mm pop setlinewidth /psize X def    [psize 0 cheight slant sin slant cos div mul cheight 0 0]    makefont setfont}bind def/shade{gs /dy X def /dx X def np m 0 /dy rl /dx 0 rl 0 /dy neg rl /dx neg 0 rl closepath .9 setgray fillgr}bind def1 setlinecap/resolution res 72 mul def/startFig {	/SavedState save def	userdict maxlength dict begin	currentpoint transform	DocumentInitState setmiterlimit setgray setdash setlinejoin setlinecap		setlinewidth setmatrix	itransform moveto	/ury exch def	/urx exch def	/lly exch def	/llx exch def	/y exch 72 mul resolution div def	/x exch 72 mul resolution div def		currentpoint /cy exch def /cx exch def	/sx x urx llx sub div def	/sy y ury lly sub div def	sx sy scale	cx sx div llx sub	cy sy div ury sub translate		/DefFigCTM matrix currentmatrix def	/initmatrix {		DefFigCTM setmatrix	} def	/defaultmatrix {		DefFigCTM exch copy	} def	/initgraphics {		DocumentInitState setmiterlimit setgray setdash 			setlinejoin setlinecap setlinewidth setmatrix		DefFigCTM setmatrix	} def	/showpage {		initgraphics	} def}bind  def/clipFig {	currentpoint 6 2 roll	newpath 4 copy	4 2 roll moveto	6 -1 roll exch lineto	exch lineto	exch lineto	closepath clip	newpath	moveto}bind  def/doclip { llx lly urx ury clipFig } def/endFig {	end SavedState restore}bind  def/globalstart {	fontnum psize slant height resolution currentpoint 	pagesave restore gsave }bind  def/globalend {	grestore moveto	/resolution exch def /height exch def	/slant exch def /psize exch def /fontnum exch def	F	/pagesave save def}bind  def/fontnum 1 def systemdict /setpacking known { savepacking setpacking} ifend/BP{save mark devps begin m0/DocumentInitState [ matrix 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/scaron putdup 8#163 /uacute putdup 8#164 /ucircumflex putdup 8#165 /udieresis putdup 8#166 /ugrave putdup 8#167 /ydieresis putdup 8#170 /zcaron putpop/Enc-dict 30 dict defEnc-dict /tmpstr1 50 string putEnc-dict /tmpstr2 50 string putEnc-dict /tmpstr3 50 string dup (Encoding-) exch cvs pop put/AEnc-def { % arguments: the original font's name, encoding nrEnc-dict begintmpstr2 cvs /Enc-no exch def % Remember the number in a stringdup /OrigName exch def % remember the namefindfont dup maxlength dict /newdict exch def % get dictionary for new font{ exch dup /FID ne   { exch newdict 3 1 roll put }   { pop pop } % Ignore FID   ifelse} forallnewdict begin/Encoding  tmpstr3 9 Enc-no putinterval tmpstr3 0 9 Enc-no length add getinterval  cvn load  def % Replace encodingcurrentdict /UniqueID known{ /UniqueID UniqueID Enc-no cvi 49999 mul add def } if % Derive New UniqueIDend % newdict/FNlength OrigName tmpstr1 cvs length def % convert name, remember lengthFNlength 1 add Enc-no length add stringdup 0 OrigName tmpstr1 cvs putintervaldup FNlength (-) putintervaldup FNlength 1 add Enc-no putintervaldup 0 tmpstr1 0 FNlength getinterval putinterval % Add old namecvn dup newdict /FontName 3 2 roll put newdict definefontend % Enc-dict} def/Times-Roman 1 AEnc-def pop/R-1{/Times-Roman-1 FF}def/R{/Times-Roman FF}def/B{/Times-Bold FF}def/I{/Times-Italic FF}def%%EndProlog%%Page: 1 1BP/slant 0 def/height 0 def480 V10 R720(CHROOT)S1143(\()S1185(2)S1243(\))S2696(Eighth)S(Edition)296 2989 A4704(CHROOT)S5127(\()S5169(2)S5227(\))S960 V9 R720(N)S722(NA)S790(AM)S858(ME)S940(E)S1080 V10 R1080(chroot)S10 R-11362(-)S10 R1444(change)S1754(root)S1941(directory)S1248 V9 R720(S)S722(SY)S774(YN)S842(NO)S910(OP)S978(PS)S1030(SI)S1082(IS)S1115(S)S1368 V10 B1080(#include)S1482(<unistd.h>)S1608 V1080(int)S1236(chroot\(const)S1812(char)S2046(*)S10 I2096(dirname)S10 B2431(\))S1776 V9 R720(D)S722(DE)S790(ES)S848(SC)S900(CR)S962(RI)S1024(IP)S1057(PT)S1109(TI)S1167(IO)S1200(ON)S1268(N)S1896 V10 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A1768(completion,)S2271(a)S2342(value)S2586(of)S2696(0)S2772(is)S2865(returned.)S3277(Otherwise,)S3743(a)S3814(value)S4058(of)S10 R-14168(-)S10 R4225(1)S4301(is)S4394(returned)S4756(and)S10 B(errno)241 4927 A10 R5194(is)S2880 V1080(set)S1217(to)S1320(indicate)S1664(an)S1784(error.)S3048 V9 R720(E)S722(ER)S780(RR)S842(RO)S904(OR)S972(RS)S1034(S)S3168 V10 B1080(Chroot)S10 R(will)157 1413 A1595(fail)S1755(and)S1925(the)S2073(root)S2260(directory)S(will)157 2649 A2831(be)S2951(unchanged)S3411(if)S3498(one)S3668(or)S3777(more)S4009(of)S4118(the)S4266(following)S4682(are)S4831(true:)S3336 V1080([ENOTDIR])S1830(A)S(component)446 1928 A2399(of)S2508(the)S2656(path)S2854(name)S3097(is)S3189(not)S3342(a)S3412(directory.)S3504 V([ENAMETOOLONG])916 1080 A3624 V1830(The)S2012(path)S2210(name)S(exceeds)319 2453 A2797(PATH_MAX)S3371(characters.)S3792 V1080([ENOENT])S1830(The)S2012(named)S2305(directory)S2694(does)S2903(not)S3056(exist.)S3960 V1080([EACCES])S1830(Search)S2130(permission)S2596(is)S2688(denied)S2981(for)S3124(any)S(component)446 3294 A3765(of)S3874(the)S4022(path)S4220(name.)S4128 V1080([ELOOP])S1830(Too)S2033(many)S2297(symbolic)S2706(links)S2942(were)S(encountered)492 3180 A3713(in)S3833(translating)S4300(the)S4465(pathname.)S4948(\(Minix-)S4248 V1830(vmd\))S4416 V1080([EFAULT])S10 I1830(Path)S10 R2045(points)S2315(outside)S2630(the)S2778(process's)S3178(allocated)S3567(address)S(space.)249 3894 A4584 V1080([EIO])S1830(An)S1978(I/O)S2138(error)S2360(occurred)S2738(while)S2987(reading)S3314(from)S3535(or)S(writing)291 3644 A3960(to)S4063(the)S4211(\256le)S4365(system.)S4752 V9 R720(S)S722(SE)S774(EE)S832(E)S913(A)S915(AL)S983(LS)S1041(SO)S1093(O)S4872 V10 B1080(chdir)S10 R1310(\(2\).)S7903 V720(Page)S941(1)S2616(\()S(August)290 2658 A2973(26,)S(1985)200 3123 A3331(\))S4455(September)S4911(13,)S(1996)200 5061 A8143 VEP%%Trailer%%DocumentFonts: Times-Roman Times-Bold Times-Italic%%Pages: 1

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