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BOOK.PS：源码内容

(search_dir)420 2874 A
3336(to)S
(bypass)252 3462 A
(the)126 3756 A
(access)252 3924 A
4218(*/)S
5400 V
(24720)210 648 A
(PUBLIC)252 1026 A
(char)168 1320 A
(dot2[3])294 1530 A
1866(=)S
("..";)210 1950 A
2370(/*)S
(permissions)462 2496 A
(for)126 3000 A
3168(.)S
(and)126 3252 A
3420(..)S
4218(*/)S
5490 V
(24721)210 648 A
5580 V
(24722)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(char)168 1866 A
(*get_name,)420 2076 A
((char)210 2538 A
(*old_name,)420 2790 A
(char)168 3252 A
(string)252 3462 A
([NAME_MAX]))462 3756 A
4260();)S
5670 V
(24723)210 648 A
5760 V
(24724)210 648 A
(/*===========================================================================*)3276 1026 A
5850 V
(24725)210 648 A
1068(*)S
(eat_path)336 2370 A
4260(*)S
5940 V
(24726)210 648 A
(*===========================================================================*/)3276 1068 A
6030 V
(24727)210 648 A
(PUBLIC)252 1026 A
(struct)252 1320 A
(inode)210 1614 A
(*eat_path(path))630 1866 A
6120 V
(24728)210 648 A
(char)168 1026 A
(*path;)252 1236 A
2370(/*)S
(the)126 2496 A
(path)168 2664 A
(name)168 2874 A
3084(to)S
3210(be)S
(parsed)252 3336 A
3630(*/)S
6210 V
(24729)210 648 A
1026({)S
8418 V
EP
%%Page: 340 340
BP
/slant 0 def
/height 0 def
630 V
12 B
(340)180 648 A
11 R
2151(File:)S
2384(src/fs/path.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(24730)210 648 A
1026(/*)S
(Parse)210 1152 A
(the)126 1404 A
(path)168 1572 A
('path')252 1782 A
(and)126 2076 A
(put)126 2244 A
(its)126 2412 A
(inode)210 2580 A
2832(in)S
(the)126 2958 A
(inode)210 3126 A
(table.)252 3378 A
3672(If)S
(not)126 3798 A
(possible,)378 3966 A
990 V
(24731)210 648 A
1068(*)S
(return)252 1152 A
(NIL_INODE)378 1446 A
1866(as)S
(function)336 1992 A
(value)210 2370 A
(and)126 2622 A
2790(an)S
(error)210 2916 A
(code)168 3168 A
3378(in)S
('err_code'.)462 3504 A
1080 V
(24732)210 648 A
1068(*/)S
1170 V
(24733)210 648 A
1260 V
(24734)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*ldip,)252 2034 A
(*rip;)210 2328 A
1350 V
(24735)210 648 A
(char)168 1110 A
(string[NAME_MAX];)714 1320 A
2370(/*)S
(hold)168 2496 A
2706(1)S
(path)168 2790 A
(component)378 3000 A
(name)168 3420 A
(here)168 3630 A
3840(*/)S
1440 V
(24736)210 648 A
1530 V
(24737)210 648 A
1110(/*)S
(First)210 1236 A
(open)168 1488 A
(the)126 1698 A
(path)168 1866 A
(down)168 2076 A
2286(to)S
(the)126 2412 A
(final)210 2580 A
(directory.)420 2832 A
3294(*/)S
1620 V
(24738)210 648 A
1110(if)S
1236(()S
((ldip)210 1320 A
1572(=)S
(last_dir(path,)588 1656 A
(string)))336 2286 A
2664(==)S
(NIL_INODE))420 2790 A
1710 V
(24739)210 648 A
(return(NIL_INODE);)756 1362 A
2370(/*)S
2496(we)S
(couldn't)336 2622 A
(open)168 3000 A
(final)210 3210 A
(directory)378 3462 A
3882(*/)S
1800 V
(24740)210 648 A
1890 V
(24741)210 648 A
1110(/*)S
(The)126 1236 A
(path)168 1404 A
(consisting)420 1614 A
(only)168 2076 A
2286(of)S
("/")126 2412 A
2580(is)S
2706(a)S
(special)294 2790 A
(case,)210 3126 A
(check)210 3378 A
(for)126 3630 A
(it.)126 3798 A
3966(*/)S
1980 V
(24742)210 648 A
1110(if)S
((string[0])420 1236 A
1698(==)S
('\0'))210 1824 A
(return(ldip);)546 2076 A
2070 V
(24743)210 648 A
2160 V
(24744)210 648 A
1110(/*)S
(Get)126 1236 A
(final)210 1404 A
(component)378 1656 A
2076(of)S
(the)126 2202 A
(path.)210 2370 A
2622(*/)S
2250 V
(24745)210 648 A
(rip)126 1110 A
1278(=)S
(advance(ldip,)546 1362 A
(string);)336 1950 A
2340 V
(24746)210 648 A
(put_inode(ldip);)672 1110 A
2430 V
(24747)210 648 A
(return(rip);)504 1110 A
2520 V
(24748)210 648 A
1026(})S
2790 V
(24751)210 648 A
(/*===========================================================================*)3276 1026 A
2880 V
(24752)210 648 A
1068(*)S
(last_dir)336 2370 A
4260(*)S
2970 V
(24753)210 648 A
(*===========================================================================*/)3276 1068 A
3060 V
(24754)210 648 A
(PUBLIC)252 1026 A
(struct)252 1320 A
(inode)210 1614 A
(*last_dir(path,)630 1866 A
(string))294 2538 A
3150 V
(24755)210 648 A
(char)168 1026 A
(*path;)252 1236 A
2370(/*)S
(the)126 2496 A
(path)168 2664 A
(name)168 2874 A
3084(to)S
3210(be)S
(parsed)252 3336 A
3630(*/)S
3240 V
(24756)210 648 A
(char)168 1026 A
(string[NAME_MAX];)714 1236 A
2370(/*)S
(the)126 2496 A
(final)210 2664 A
(component)378 2916 A
3336(is)S
(returned)336 3462 A
(here)168 3840 A
4050(*/)S
3330 V
(24757)210 648 A
1026({)S
3420 V
(24758)210 648 A
1026(/*)S
(Given)210 1152 A
1404(a)S
(path,)210 1488 A
('path',)294 1740 A
(located)294 2076 A
2412(in)S
(the)126 2538 A
2706(fs)S
(address)294 2832 A
(space,)252 3168 A
(parse)210 3462 A
3714(it)S
3840(as)S
3510 V
(24759)210 648 A
1068(*)S
(far)126 1152 A
1320(as)S
(the)126 1446 A
(last)168 1614 A
(directory,)420 1824 A
(fetch)210 2286 A
(the)126 2538 A
(inode)210 2706 A
(for)126 2958 A
(the)126 3126 A
(last)168 3294 A
(directory)378 3504 A
(into)168 3924 A
3600 V
(24760)210 648 A
1068(*)S
(the)126 1152 A
(inode)210 1320 A
(table,)252 1572 A
(and)126 1866 A
(return)252 2034 A
2328(a)S
(pointer)294 2412 A
2748(to)S
(the)126 2874 A
(inode.)252 3042 A
3378(In)S
3690 V
(24761)210 648 A
1068(*)S
(addition,)378 1152 A
(return)252 1572 A
(the)126 1866 A
(final)210 2034 A
(component)378 2286 A
2706(of)S
(the)126 2832 A
(path)168 3000 A
3210(in)S
('string'.)378 3336 A
3780 V
(24762)210 648 A
1068(*)S
1152(If)S
(the)126 1278 A
(last)168 1446 A
(directory)378 1656 A
(can't)210 2076 A
2328(be)S
(opened,)294 2454 A
(return)252 2790 A
(NIL_INODE)378 3084 A
(and)126 3504 A
3870 V
(24763)210 648 A
1068(*)S
(the)126 1152 A
(reason)252 1320 A
(for)126 1614 A
(failure)294 1782 A
2118(in)S
('err_code'.)462 2244 A
3960 V
(24764)210 648 A
1068(*/)S
4050 V
(24765)210 648 A
4140 V
(24766)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*rip;)210 2034 A
4230 V
(24767)210 648 A
(register)336 1110 A
(char)168 1488 A
(*new_name;)420 1698 A
4320 V
(24768)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*new_ip;)336 2034 A
4410 V
(24769)210 648 A
4500 V
(24770)210 648 A
1110(/*)S
1236(Is)S
(the)126 1362 A
(path)168 1530 A
(absolute)336 1740 A
2118(or)S
(relative?)378 2244 A
(Initialize)420 2706 A
('rip')210 3168 A
(accordingly.)504 3420 A
3966(*/)S
4590 V
(24771)210 648 A
(rip)126 1110 A
1278(=)S
((*path)252 1362 A
1656(==)S
('/')126 1782 A
1950(?)S
(fp->fp_rootdir)588 2034 A
2664(:)S
(fp->fp_workdir);)672 2748 A
4680 V
(24772)210 648 A
4770 V
(24773)210 648 A
1110(/*)S
1236(If)S
(dir)126 1362 A
(has)126 1530 A
(been)168 1698 A
(removed)294 1908 A
2244(or)S
(path)168 2370 A
2580(is)S
(empty,)252 2706 A
(return)252 3000 A
(ENOENT.)294 3294 A
3630(*/)S
4860 V
(24774)210 648 A
1110(if)S
((rip->i_nlinks)588 1236 A
1866(==)S
1992(0)S
2076(||)S
(*path)210 2202 A
2454(==)S
('\0'))210 2580 A
2832({)S
4950 V
(24775)210 648 A
(err_code)336 1362 A
1740(=)S
(ENOENT;)294 1824 A
5040 V
(24776)210 648 A
(return(NIL_INODE);)756 1362 A
5130 V
(24777)210 648 A
1110(})S
5220 V
(24778)210 648 A
5310 V
(24779)210 648 A
(dup_inode(rip);)630 1110 A
2370(/*)S
(inode)210 2496 A
(will)168 2748 A
2958(be)S
(returned)336 3084 A
(with)168 3462 A
(put_inode)378 3672 A
4092(*/)S
5400 V
(24780)210 648 A
5490 V
(24781)210 648 A
1110(/*)S
(Scan)168 1236 A
(the)126 1446 A
(path)168 1614 A
(component)378 1824 A
2244(by)S
(component.)420 2370 A
2832(*/)S
5580 V
(24782)210 648 A
(while)210 1110 A
((TRUE))252 1362 A
1656({)S
5670 V
(24783)210 648 A
1362(/*)S
(Extract)294 1488 A
(one)126 1824 A
(component.)420 1992 A
2454(*/)S
5760 V
(24784)210 648 A
1362(if)S
1488(()S
((new_name)378 1572 A
1992(=)S
(get_name(path,)588 2076 A
(string)))336 2706 A
3084(==)S
((char*))294 3210 A
3546(0))S
3672({)S
5850 V
(24785)210 648 A
(put_inode(rip);)630 1698 A
2370(/*)S
(bad)126 2496 A
(path)168 2664 A
2874(in)S
(user)168 3000 A
(space)210 3210 A
3462(*/)S
5940 V
(24786)210 648 A
(return(NIL_INODE);)756 1698 A
6030 V
(24787)210 648 A
1362(})S
6120 V
(24788)210 648 A
1362(if)S
((*new_name)420 1488 A
1950(==)S
('\0'))210 2076 A
6210 V
(24789)210 648 A
1698(if)S
1824(()S
((rip->i_mode)504 1908 A
2454(&)S
(I_TYPE))294 2538 A
2874(==)S
(I_DIRECTORY))504 3000 A
8418 V
EP
%%Page: 341 341
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2151(File:)S
2384(src/fs/path.c)S
12 B
(341)180 4248 A
900 V
7 LST
(24790)210 648 A
(return(rip);)504 2034 A
2706(/*)S
(normal)252 2832 A
(exit)168 3126 A
3336(*/)S
990 V
(24791)210 648 A
(else)168 1698 A
1908({)S
1080 V
(24792)210 648 A
2034(/*)S
(last)168 2160 A
(file)168 2370 A
2580(of)S
(path)168 2706 A
(prefix)252 2916 A
3210(is)S
(not)126 3336 A
3504(a)S
(directory)378 3588 A
4008(*/)S
1170 V
(24793)210 648 A
(put_inode(rip);)630 2034 A
1260 V
(24794)210 648 A
(err_code)336 2034 A
2412(=)S
(ENOTDIR;)336 2496 A
1350 V
(24795)210 648 A
(return(NIL_INODE);)756 2034 A
1440 V
(24796)210 648 A
1698(})S
1530 V
(24797)210 648 A
1620 V
(24798)210 648 A
1362(/*)S
(There)210 1488 A
1740(is)S
(more)168 1866 A
(path.)210 2076 A
(Keep)168 2370 A
(parsing.)336 2580 A
2958(*/)S
1710 V
(24799)210 648 A
(new_ip)252 1362 A
1656(=)S
(advance(rip,)504 1740 A
(string);)336 2286 A
1800 V
(24800)210 648 A
(put_inode(rip);)630 1362 A
2370(/*)S
(rip)126 2496 A
(either)252 2664 A
(obsolete)336 2958 A
3336(or)S
(irrelevant)420 3462 A
3924(*/)S
1890 V
(24801)210 648 A
1362(if)S
((new_ip)294 1488 A
1824(==)S
(NIL_INODE))420 1950 A
(return(NIL_INODE);)756 2412 A
1980 V
(24802)210 648 A
2070 V
(24803)210 648 A
1362(/*)S
(The)126 1488 A
(call)168 1656 A
1866(to)S
(advance())378 1992 A
(succeeded.)420 2412 A
(Fetch)210 2916 A
(next)168 3168 A
(component.)420 3378 A
3840(*/)S
2160 V
(24804)210 648 A
(path)168 1362 A
1572(=)S
(new_name;)378 1656 A
2250 V
(24805)210 648 A
(rip)126 1362 A
1530(=)S
(new_ip;)294 1614 A
2340 V
(24806)210 648 A
1110(})S
2430 V
(24807)210 648 A
1026(})S
2700 V
(24810)210 648 A
(/*===========================================================================*)3276 1026 A
2790 V
(24811)210 648 A
1068(*)S
(get_name)336 2370 A
4260(*)S
2880 V
(24812)210 648 A
(*===========================================================================*/)3276 1068 A
2970 V
(24813)210 648 A
(PRIVATE)294 1026 A
(char)168 1362 A
(*get_name(old_name,)798 1572 A
(string))294 2412 A
3060 V
(24814)210 648 A
(char)168 1026 A
(*old_name;)420 1236 A
2370(/*)S
(path)168 2496 A
(name)168 2706 A
2916(to)S
(parse)210 3042 A
3294(*/)S
3150 V
(24815)210 648 A
(char)168 1026 A
(string[NAME_MAX];)714 1236 A
2370(/*)S
(component)378 2496 A
(extracted)378 2916 A
(from)168 3336 A
('old_name')420 3546 A
4008(*/)S
3240 V
(24816)210 648 A
1026({)S
3330 V
(24817)210 648 A
1026(/*)S
(Given)210 1152 A
1404(a)S
(pointer)294 1488 A
1824(to)S
1950(a)S
(path)168 2034 A
(name)168 2244 A
2454(in)S
2580(fs)S
(space,)252 2706 A
('old_name',)462 3000 A
(copy)168 3504 A
(the)126 3714 A
(next)168 3882 A
3420 V
(24818)210 648 A
1068(*)S
(component)378 1152 A
1572(to)S
('string')336 1698 A
(and)126 2076 A
(pad)126 2244 A
(with)168 2412 A
(zeros.)252 2622 A
2958(A)S
(pointer)294 3042 A
3378(to)S
(that)168 3504 A
(part)168 3714 A
3924(of)S
3510 V
(24819)210 648 A
1068(*)S
(the)126 1152 A
(name)168 1320 A
1530(as)S
(yet)126 1656 A
(unparsed)336 1824 A
2202(is)S
(returned.)378 2328 A
(Roughly)294 2790 A
(speaking,)378 3126 A
3600 V
(24820)210 648 A
1068(*)S
('get_name')420 1152 A
1614(=)S
('old_name')420 1698 A
2160(-)S
('string'.)378 2244 A
3690 V
(24821)210 648 A
1068(*)S
3780 V
(24822)210 648 A
1068(*)S
(This)168 1152 A
(routine)294 1362 A
(follows)294 1698 A
(the)126 2034 A
(standard)336 2202 A
(convention)420 2580 A
(that)168 3042 A
(/usr/ast,)378 3252 A
(/usr//ast,)420 3672 A
3870 V
(24823)210 648 A
1068(*)S
(//usr///ast)462 1152 A
(and)126 1656 A
(/usr/ast/)378 1824 A
(are)126 2244 A
(all)126 2412 A
(equivalent.)462 2580 A
3960 V
(24824)210 648 A
1068(*/)S
4050 V
(24825)210 648 A
4140 V
(24826)210 648 A
(register)336 1110 A
(int)126 1488 A
1656(c;)S
4230 V
(24827)210 648 A
(register)336 1110 A
(char)168 1488 A
(*np,)168 1698 A
(*rnp;)210 1908 A
4320 V
(24828)210 648 A
4410 V
(24829)210 648 A
1110(np)S
1236(=)S
(string;)294 1320 A
2370(/*)S
('np')168 2496 A
(points)252 2706 A
3000(to)S
(current)294 3126 A
(position)336 3462 A
3840(*/)S
4500 V
(24830)210 648 A
(rnp)126 1110 A
1278(=)S
(old_name;)378 1362 A
2370(/*)S
('rnp')210 2496 A
(points)252 2748 A
3042(to)S
(unparsed)336 3168 A
(string)252 3546 A
3840(*/)S
4590 V
(24831)210 648 A
(while)210 1110 A
1362(()S
1446((c)S
1572(=)S
(*rnp))210 1656 A
1908(==)S
('/'))168 2034 A
(rnp++;)252 2244 A
2706(/*)S
(skip)168 2832 A
(leading)294 3042 A
(slashes)294 3378 A
3714(*/)S
4680 V
(24832)210 648 A
4770 V
(24833)210 648 A
1110(/*)S
(Copy)168 1236 A
(the)126 1446 A
(unparsed)336 1614 A
(path,)210 1992 A
('old_name',)462 2244 A
2748(to)S
(the)126 2874 A
(array,)252 3042 A
('string'.)378 3336 A
3756(*/)S
4860 V
(24834)210 648 A
(while)210 1110 A
1362(()S
(rnp)126 1446 A
1614(<)S
(&old_name[PATH_MAX])798 1698 A
2580(&&)S
2748(c)S
2832(!=)S
('/')126 2958 A
3210(&&)S
3378(c)S
3462(!=)S
('\0'))210 3588 A
3840({)S
4950 V
(24835)210 648 A
1362(if)S
((np)126 1488 A
1656(<)S
(&string[NAME_MAX]))756 1740 A
(*np++)210 2538 A
2790(=)S
2874(c;)S
5040 V
(24836)210 648 A
1362(c)S
1446(=)S
(*++rnp;)294 1530 A
2370(/*)S
(advance)294 2496 A
2832(to)S
(next)168 2958 A
(character)378 3168 A
3588(*/)S
5130 V
(24837)210 648 A
1110(})S
5220 V
(24838)210 648 A
5310 V
(24839)210 648 A
1110(/*)S
1236(To)S
(make)168 1362 A
(/usr/ast/)378 1572 A
(equivalent)420 1992 A
2454(to)S
(/usr/ast,)378 2580 A
(skip)168 3000 A
(trailing)336 3210 A
(slashes.)336 3588 A
3966(*/)S
5400 V
(24840)210 648 A
(while)210 1110 A
1362((c)S
1488(==)S
('/')126 1614 A
1782(&&)S
(rnp)126 1908 A
2076(<)S
(&old_name[PATH_MAX]))840 2160 A
3042(c)S
3126(=)S
(*++rnp;)294 3210 A
5490 V
(24841)210 648 A
5580 V
(24842)210 648 A
1110(if)S
((np)126 1236 A
1404(<)S
(&string[NAME_MAX]))756 1488 A
(*np)126 2286 A
2454(=)S
('\0';)210 2538 A
3042(/*)S
(Terminate)378 3168 A
(string)252 3588 A
3882(*/)S
5670 V
(24843)210 648 A
5760 V
(24844)210 648 A
1110(if)S
((rnp)168 1236 A
1446(>=)S
(&old_name[PATH_MAX]))840 1572 A
2454({)S
5850 V
(24845)210 648 A
(err_code)336 1362 A
1740(=)S
(ENAMETOOLONG;)546 1824 A
5940 V
(24846)210 648 A
(return((char)504 1362 A
1908(*))S
(0);)126 2034 A
6030 V
(24847)210 648 A
1110(})S
6120 V
(24848)210 648 A
(return(rnp);)504 1110 A
6210 V
(24849)210 648 A
1026(})S
8418 V
EP
%%Page: 342 342
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/slant 0 def
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630 V
12 B
(342)180 648 A
11 R
2151(File:)S
2384(src/fs/path.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
1080 V
7 LST
(24852)210 648 A
(/*===========================================================================*)3276 1026 A
1170 V
(24853)210 648 A
1068(*)S
(advance)294 2370 A
4260(*)S
1260 V
(24854)210 648 A
(*===========================================================================*/)3276 1068 A
1350 V
(24855)210 648 A
(PUBLIC)252 1026 A
(struct)252 1320 A
(inode)210 1614 A
(*advance(dirp,)588 1866 A
(string))294 2496 A
1440 V
(24856)210 648 A
(struct)252 1026 A
(inode)210 1320 A
(*dirp;)252 1572 A
2370(/*)S
(inode)210 2496 A
(for)126 2748 A
(directory)378 2916 A
3336(to)S
3462(be)S
(searched)336 3588 A
3966(*/)S
1530 V
(24857)210 648 A
(char)168 1026 A
(string[NAME_MAX];)714 1236 A
2370(/*)S
(component)378 2496 A
(name)168 2916 A
3126(to)S
(look)168 3252 A
(for)126 3462 A
3630(*/)S
1620 V
(24858)210 648 A
1026({)S
1710 V
(24859)210 648 A
1026(/*)S
(Given)210 1152 A
1404(a)S
(directory)378 1488 A
(and)126 1908 A
2076(a)S
(component)378 2160 A
2580(of)S
2706(a)S
(path,)210 2790 A
(look)168 3042 A
3252(up)S
(the)126 3378 A
(component)378 3546 A
3966(in)S
1800 V
(24860)210 648 A
1068(*)S
(the)126 1152 A
(directory,)420 1320 A
(find)168 1782 A
(the)126 1992 A
(inode,)252 2160 A
(open)168 2454 A
(it,)126 2664 A
(and)126 2832 A
(return)252 3000 A
3294(a)S
(pointer)294 3378 A
3714(to)S
(its)126 3840 A
(inode)210 4008 A
1890 V
(24861)210 648 A
1068(*)S
(slot.)210 1152 A
1446(If)S
1572(it)S
(can't)210 1698 A
1950(be)S
(done,)210 2076 A
(return)252 2328 A
(NIL_INODE.)420 2622 A
1980 V
(24862)210 648 A
1068(*/)S
2070 V
(24863)210 648 A
2160 V
(24864)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*rip;)210 2034 A
2250 V
(24865)210 648 A
(struct)252 1110 A
(inode)210 1404 A
(*rip2;)252 1656 A
2340 V
(24866)210 648 A
(register)336 1110 A
(struct)252 1488 A
(super_block)462 1782 A
(*sp;)168 2286 A
2430 V
(24867)210 648 A
(int)126 1110 A
1278(r,)S
(inumb;)252 1404 A
2520 V
(24868)210 648 A
(dev_t)210 1110 A
(mnt_dev;)336 1362 A
2610 V
(24869)210 648 A
(ino_t)210 1110 A
(numb;)210 1362 A
2700 V
(24870)210 648 A
2790 V
(24871)210 648 A
1110(/*)S
1236(If)S
('string')336 1362 A
1740(is)S
(empty,)252 1866 A
(yield)210 2160 A
(same)168 2412 A
(inode)210 2622 A
(straight)336 2874 A
(away.)210 3252 A
3504(*/)S
2880 V
(24872)210 648 A
1110(if)S
((string[0])420 1236 A
1698(==)S
('\0'))210 1824 A
(return(get_inode(dirp->i_dev,)1218 2076 A
((int))210 3336 A
(dirp->i_num));)588 3588 A
2970 V
(24873)210 648 A
3060 V
(24874)210 648 A
1110(/*)S
(Check)210 1236 A
(for)126 1488 A
(NIL_INODE.)420 1656 A
2118(*/)S
3150 V
(24875)210 648 A
1110(if)S
((dirp)210 1236 A
1488(==)S
(NIL_INODE))420 1614 A
(return(NIL_INODE);)756 2076 A
3240 V
(24876)210 648 A
3330 V
(24877)210 648 A
1110(/*)S
1236(If)S
('string')336 1362 A
1740(is)S
(not)126 1866 A
(present)294 2034 A
2370(in)S
(the)126 2496 A
(directory,)420 2664 A
(signal)252 3126 A
(error.)252 3420 A
3714(*/)S
3420 V
(24878)210 648 A
1110(if)S
1236(()S
1320((r)S
1446(=)S
(search_dir(dirp,)672 1530 A
(string,)294 2244 A
(&numb,)252 2580 A
(LOOK_UP)))378 2874 A
3294(!=)S
(OK))126 3420 A
3588({)S
3510 V
(24879)210 648 A
(err_code)336 1362 A
1740(=)S
1824(r;)S
3600 V
(24880)210 648 A
(return(NIL_INODE);)756 1362 A
3690 V
(24881)210 648 A
1110(})S
3780 V
(24882)210 648 A
3870 V
(24883)210 648 A
1110(/*)S
(Don't)210 1236 A
1488(go)S
(beyond)252 1614 A
(the)126 1908 A
(current)294 2076 A
(root)168 2412 A
(directory,)420 2622 A
(unless)252 3084 A
(the)126 3378 A
(string)252 3546 A
3840(is)S
(dot2.)210 3966 A
4218(*/)S
3960 V
(24884)210 648 A
1110(if)S
((dirp)210 1236 A
1488(==)S
(fp->fp_rootdir)588 1614 A
2244(&&)S
(strcmp(string,)588 2370 A
(".."))210 3000 A
3252(==)S
3378(0)S
3462(&&)S
(string)252 3588 A
3882(!=)S
(dot2))210 4008 A
4050 V
(24885)210 648 A
(return(get_inode(dirp->i_dev,)1218 1698 A
((int))210 2958 A
(dirp->i_num));)588 3210 A
4140 V
(24886)210 648 A
4230 V
(24887)210 648 A
1110(/*)S
(The)126 1236 A
(component)378 1404 A
(has)126 1824 A
(been)168 1992 A
(found)210 2202 A
2454(in)S
(the)126 2580 A
(directory.)420 2748 A
(Get)126 3252 A
(inode.)252 3420 A
3714(*/)S
4320 V
(24888)210 648 A
1110(if)S
1236(()S
((rip)168 1320 A
1530(=)S
(get_inode(dirp->i_dev,)924 1614 A
((int))210 2580 A
(numb)))252 2832 A
3126(==)S
(NIL_INODE))420 3252 A
4410 V
(24889)210 648 A
(return(NIL_INODE);)756 1362 A
4500 V
(24890)210 648 A
4590 V
(24891)210 648 A
1110(if)S
((rip->i_num)462 1236 A
1740(==)S
(ROOT_INODE))462 1866 A
4680 V
(24892)210 648 A
1362(if)S
((dirp->i_num)504 1488 A
2034(==)S
(ROOT_INODE))462 2160 A
2664({)S
4770 V
(24893)210 648 A
1530(if)S
((string[1])420 1656 A
2118(==)S
('.'))168 2244 A
2454({)S
4860 V
(24894)210 648 A
(for)126 1698 A
((sp)126 1866 A
2034(=)S
(&super_block[1];)672 2118 A
2832(sp)S
2958(<)S
(&super_block[NR_SUPERS];)1008 3042 A
(sp++){)252 4092 A
4950 V
(24895)210 648 A
2034(if)S
((sp->s_dev)420 2160 A
2622(==)S
(rip->i_dev))462 2748 A
3252({)S
5040 V
(24896)210 648 A
2370(/*)S
(Release)294 2496 A
(the)126 2832 A
(root)168 3000 A
(inode.)252 3210 A
(Replace)294 3546 A
3882(by)S
(the)126 4008 A
5130 V
(24897)210 648 A
2412(*)S
(inode)210 2496 A
(mounted)294 2748 A
(on.)126 3084 A
5220 V
(24898)210 648 A
2412(*/)S
5310 V
(24899)210 648 A
(put_inode(rip);)630 2370 A
5400 V
(24900)210 648 A
(mnt_dev)294 2370 A
2706(=)S
(sp->s_imount->i_dev;)840 2790 A
5490 V
(24901)210 648 A
(inumb)210 2370 A
2622(=)S
((int))210 2706 A
(sp->s_imount->i_num;)840 2958 A
5580 V
(24902)210 648 A
(rip2)168 2370 A
2580(=)S
(get_inode(mnt_dev,)756 2664 A
(inumb);)294 3462 A
5670 V
(24903)210 648 A
(rip)126 2370 A
2538(=)S
(advance(rip2,)546 2622 A
(string);)336 3210 A
5760 V
(24904)210 648 A
(put_inode(rip2);)672 2370 A
5850 V
(24905)210 648 A
(break;)252 2370 A
5940 V
(24906)210 648 A
2034(})S
6030 V
(24907)210 648 A
1698(})S
6120 V
(24908)210 648 A
1530(})S
6210 V
(24909)210 648 A
1362(})S
8418 V
EP
%%Page: 343 343
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2151(File:)S
2384(src/fs/path.c)S
12 B
(343)180 4248 A
900 V
7 LST
(24910)210 648 A
1110(if)S
((rip)168 1236 A
1446(==)S
(NIL_INODE))420 1572 A
(return(NIL_INODE);)756 2034 A
990 V
(24911)210 648 A
1080 V
(24912)210 648 A
1110(/*)S
(See)126 1236 A
1404(if)S
(the)126 1530 A
(inode)210 1698 A
1950(is)S
(mounted)294 2076 A
(on.)126 2412 A
2622(If)S
(so,)126 2748 A
(switch)252 2916 A
3210(to)S
(root)168 3336 A
(directory)378 3546 A
3966(of)S
(the)126 4092 A
1170 V
(24913)210 648 A
1152(*)S
(mounted)294 1236 A
(file)168 1572 A
(system.)294 1782 A
(The)126 2160 A
(super_block)462 2328 A
(provides)336 2832 A
(the)126 3210 A
(linkage)294 3378 A
(between)294 3714 A
(the)126 4050 A
1260 V
(24914)210 648 A
1152(*)S
(inode)210 1236 A
(mounted)294 1488 A
1824(on)S
(and)126 1950 A
(the)126 2118 A
(root)168 2286 A
(directory)378 2496 A
2916(of)S
(the)126 3042 A
(mounted)294 3210 A
(file)168 3546 A
(system.)294 3756 A
1350 V
(24915)210 648 A
1152(*/)S
1440 V
(24916)210 648 A
(while)210 1110 A
((rip)168 1362 A
1572(!=)S
(NIL_INODE)378 1698 A
2118(&&)S
(rip->i_mount)504 2244 A
2790(==)S
(I_MOUNT))336 2916 A
3294({)S
1530 V
(24917)210 648 A
1362(/*)S
(The)126 1488 A
(inode)210 1656 A
1908(is)S
(indeed)252 2034 A
(mounted)294 2328 A
(on.)126 2664 A
2832(*/)S
1620 V
(24918)210 648 A
(for)126 1362 A
((sp)126 1530 A
1698(=)S
(&super_block[0];)672 1782 A
2496(sp)S
2622(<)S
(&super_block[NR_SUPERS];)1008 2706 A
(sp++))210 3756 A
4008({)S
1710 V
(24919)210 648 A
1698(if)S
((sp->s_imount)546 1824 A
2412(==)S
(rip))168 2538 A
2748({)S
1800 V
(24920)210 648 A
2034(/*)S
(Release)294 2160 A
(the)126 2496 A
(inode)210 2664 A
(mounted)294 2916 A
(on.)126 3252 A
(Replace)294 3462 A
3798(by)S
(the)126 3924 A
1890 V
(24921)210 648 A
2076(*)S
(inode)210 2160 A
2412(of)S
(the)126 2538 A
(root)168 2706 A
(inode)210 2916 A
3168(of)S
(the)126 3294 A
(mounted)294 3462 A
(device.)294 3798 A
1980 V
(24922)210 648 A
2076(*/)S
2070 V
(24923)210 648 A
(put_inode(rip);)630 2034 A
2160 V
(24924)210 648 A
(rip)126 2034 A
2202(=)S
(get_inode(sp->s_dev,)840 2286 A
(ROOT_INODE);)504 3168 A
2250 V
(24925)210 648 A
(break;)252 2034 A
2340 V
(24926)210 648 A
1698(})S
2430 V
(24927)210 648 A
1362(})S
2520 V
(24928)210 648 A
1110(})S
2610 V
(24929)210 648 A
(return(rip);)504 1110 A
2034(/*)S
(return)252 2160 A
(pointer)294 2454 A
2790(to)S
(inode's)294 2916 A
(component)378 3252 A
3672(*/)S
2700 V
(24930)210 648 A
1026(})S
2970 V
(24933)210 648 A
(/*===========================================================================*)3276 1026 A
3060 V
(24934)210 648 A
1068(*)S
(search_dir)420 2370 A
4260(*)S
3150 V
(24935)210 648 A
(*===========================================================================*/)3276 1068 A
3240 V
(24936)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(search_dir(ldir_ptr,)840 1488 A
(string,)294 2370 A
(numb,)210 2706 A
(flag))210 2958 A
3330 V
(24937)210 648 A
(register)336 1026 A
(struct)252 1404 A
(inode)210 1698 A
(*ldir_ptr;)420 1950 A
2706(/*)S
(ptr)126 2832 A
3000(to)S
(inode)210 3126 A
(for)126 3378 A
(dir)126 3546 A
3714(to)S
(search)252 3840 A
4134(*/)S
3420 V
(24938)210 648 A
(char)168 1026 A
(string[NAME_MAX];)714 1236 A
2370(/*)S
(component)378 2496 A
2916(to)S
(search)252 3042 A
(for)126 3336 A
3504(*/)S
3510 V
(24939)210 648 A
(ino_t)210 1026 A
(*numb;)252 1278 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(inode)210 2958 A
(number)252 3210 A
3504(*/)S
3600 V
(24940)210 648 A
(int)126 1026 A
(flag;)210 1194 A
2370(/*)S
(LOOK_UP,)336 2496 A
(ENTER,)252 2874 A
(DELETE)252 3168 A
3462(or)S
(IS_EMPTY)336 3588 A
3966(*/)S
3690 V
(24941)210 648 A
1026({)S
3780 V
(24942)210 648 A
1026(/*)S
(This)168 1152 A
(function)336 1362 A
(searches)336 1740 A
(the)126 2118 A
(directory)378 2286 A
(whose)210 2706 A
(inode)210 2958 A
3210(is)S
(pointed)294 3336 A
3672(to)S
3798(by)S
('ldip':)294 3924 A
3870 V
(24943)210 648 A
1068(*)S
1152(if)S
((flag)210 1278 A
1530(==)S
(ENTER))252 1656 A
(enter)210 1992 A
('string')336 2244 A
2622(in)S
(the)126 2748 A
(directory)378 2916 A
(with)168 3336 A
(inode)210 3546 A
3798(#)S
('*numb';)336 3882 A
3960 V
(24944)210 648 A
1068(*)S
1152(if)S
((flag)210 1278 A
1530(==)S
(DELETE))294 1656 A
(delete)252 1992 A
('string')336 2286 A
(from)168 2664 A
(the)126 2874 A
(directory;)420 3042 A
4050 V
(24945)210 648 A
1068(*)S
1152(if)S
((flag)210 1278 A
1530(==)S
(LOOK_UP))336 1656 A
(search)252 2034 A
(for)126 2328 A
('string')336 2496 A
(and)126 2874 A
(return)252 3042 A
(inode)210 3336 A
3588(#)S
3672(in)S
('numb';)294 3798 A
4140 V
(24946)210 648 A
1068(*)S
1152(if)S
((flag)210 1278 A
1530(==)S
(IS_EMPTY))378 1656 A
(return)252 2076 A
2370(OK)S
2496(if)S
(only)168 2622 A
2832(.)S
(and)126 2916 A
3084(..)S
3210(in)S
(dir)126 3336 A
(else)168 3504 A
(ENOTEMPTY;)420 3714 A
4230 V
(24947)210 648 A
1068(*)S
4320 V
(24948)210 648 A
1068(*)S
1278(if)S
('string')336 1404 A
1782(is)S
(dot1)168 1908 A
2118(or)S
(dot2,)210 2244 A
2496(no)S
(access)252 2622 A
(permissions)462 2916 A
(are)126 3420 A
(checked.)336 3588 A
4410 V
(24949)210 648 A
1068(*/)S
4500 V
(24950)210 648 A
4590 V
(24951)210 648 A
(register)336 1110 A
(struct)252 1488 A
(direct)252 1782 A
(*dp;)168 2076 A
4680 V
(24952)210 648 A
(register)336 1110 A
(struct)252 1488 A
(buf)126 1782 A
(*bp;)168 1950 A
4770 V
(24953)210 648 A
(int)126 1110 A
1278(i,)S
1404(r,)S
(e_hit,)252 1530 A
1824(t,)S
(match;)252 1950 A
4860 V
(24954)210 648 A
(mode_t)252 1110 A
(bits;)210 1404 A
4950 V
(24955)210 648 A
(off_t)210 1110 A
(pos;)168 1362 A
5040 V
(24956)210 648 A
(unsigned)336 1110 A
(new_slots,)420 1488 A
(old_slots;)420 1950 A
5130 V
(24957)210 648 A
(block_t)294 1110 A
1446(b;)S
5220 V
(24958)210 648 A
(struct)252 1110 A
(super_block)462 1404 A
(*sp;)168 1908 A
5310 V
(24959)210 648 A
(int)126 1110 A
(extended)336 1278 A
1656(=)S
1740(0;)S
5400 V
(24960)210 648 A
5490 V
(24961)210 648 A
1110(/*)S
1236(If)S
('ldir_ptr')420 1362 A
1824(is)S
(not)126 1950 A
2118(a)S
(pointer)294 2202 A
2538(to)S
2664(a)S
(dir)126 2748 A
(inode,)252 2916 A
(error.)252 3210 A
3504(*/)S
5580 V
(24962)210 648 A
1110(if)S
1236(()S
((ldir_ptr->i_mode)714 1320 A
2076(&)S
(I_TYPE))294 2160 A
2496(!=)S
(I_DIRECTORY))504 2622 A
(return(ENOTDIR);)672 3168 A
5670 V
(24963)210 648 A
5760 V
(24964)210 648 A
1110(r)S
1194(=)S
(OK;)126 1278 A
5850 V
(24965)210 648 A
5940 V
(24966)210 648 A
1110(if)S
((flag)210 1236 A
1488(!=)S
(IS_EMPTY))378 1614 A
2034({)S
6030 V
(24967)210 648 A
(bits)168 1362 A
1572(=)S
((flag)210 1656 A
1908(==)S
(LOOK_UP)294 2034 A
2370(?)S
(X_BIT)210 2454 A
2706(:)S
(W_BIT)210 2790 A
3042(|)S
(X_BIT);)294 3126 A
6120 V
(24968)210 648 A
6210 V
(24969)210 648 A
1362(if)S
((string)294 1488 A
1824(==)S
(dot1)168 1950 A
2160(||)S
(string)252 2286 A
2580(==)S
(dot2))210 2706 A
2958({)S
8418 V
EP
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BP
/slant 0 def
/height 0 def
630 V
12 B
(344)180 648 A
11 R
2151(File:)S
2384(src/fs/path.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(24970)210 648 A
1698(if)S
((flag)210 1824 A
2076(!=)S
(LOOK_UP))336 2202 A
2580(r)S
2664(=)S
(read_only(ldir_ptr);)840 2748 A
990 V
(24971)210 648 A
2580(/*)S
(only)168 2706 A
2916(a)S
(writable)336 3000 A
(device)252 3378 A
3672(is)S
(required.)378 3798 A
4218(*/)S
1080 V
(24972)210 648 A
1362(})S
1170 V
(24973)210 648 A
(else)168 1362 A
1572(r)S
1656(=)S
(forbidden(ldir_ptr,)798 1740 A
(bits);)252 2580 A
2874(/*)S
(check)210 3000 A
(access)252 3252 A
(permissions)462 3546 A
4050(*/)S
1260 V
(24974)210 648 A
1110(})S
1350 V
(24975)210 648 A
1110(if)S
1236((r)S
1362(!=)S
(OK))126 1488 A
(return(r);)420 1656 A
1440 V
(24976)210 648 A
1530 V
(24977)210 648 A
1110(/*)S
(Step)168 1236 A
(through)294 1446 A
(the)126 1782 A
(directory)378 1950 A
(one)126 2370 A
(block)210 2538 A
2790(at)S
2916(a)S
(time.)210 3000 A
3252(*/)S
1620 V
(24978)210 648 A
(old_slots)378 1110 A
1530(=)S
((unsigned))420 1614 A
((ldir_ptr->i_size/DIR_ENTRY_SIZE);)1428 2076 A
1710 V
(24979)210 648 A
(new_slots)378 1110 A
1530(=)S
1614(0;)S
1800 V
(24980)210 648 A
(e_hit)210 1110 A
1362(=)S
(FALSE;)252 1446 A
1890 V
(24981)210 648 A
(match)210 1110 A
1362(=)S
1446(0;)S
2370(/*)S
(set)126 2496 A
(when)168 2664 A
2874(a)S
(string)252 2958 A
(match)210 3252 A
(occurs)252 3504 A
3798(*/)S
1980 V
(24982)210 648 A
2070 V
(24983)210 648 A
(for)126 1110 A
((pos)168 1278 A
1488(=)S
1572(0;)S
(pos)126 1698 A
1866(<)S
(ldir_ptr->i_size;)714 1950 A
(pos)126 2706 A
2874(+=)S
(BLOCK_SIZE))462 3000 A
3504({)S
2160 V
(24984)210 648 A
1362(b)S
1446(=)S
(read_map(ldir_ptr,)756 1530 A
(pos);)210 2328 A
2706(/*)S
(get)126 2832 A
(block)210 3000 A
(number)252 3252 A
3546(*/)S
2250 V
(24985)210 648 A
2340 V
(24986)210 648 A
1362(/*)S
(Since)210 1488 A
(directories)462 1740 A
(don't)210 2244 A
(have)168 2496 A
(holes,)252 2706 A
('b')126 3000 A
(cannot)252 3168 A
3462(be)S
(NO_BLOCK.)378 3588 A
4008(*/)S
2430 V
(24987)210 648 A
1362(bp)S
1488(=)S
(get_block(ldir_ptr->i_dev,)1092 1572 A
2706(b,)S
(NORMAL);)336 2832 A
3378(/*)S
(get)126 3504 A
3672(a)S
(dir)126 3756 A
(block)210 3924 A
4176(*/)S
2520 V
(24988)210 648 A
2610 V
(24989)210 648 A
1362(/*)S
(Search)252 1488 A
1782(a)S
(directory)378 1866 A
(block.)252 2286 A
2580(*/)S
2700 V
(24990)210 648 A
(for)126 1362 A
((dp)126 1530 A
1698(=)S
(&bp->b_dir[0];)588 1782 A
2412(dp)S
2538(<)S
(&bp->b_dir[NR_DIR_ENTRIES];)1134 2622 A
(dp++))210 3798 A
4050({)S
2790 V
(24991)210 648 A
1698(if)S
((++new_slots)504 1824 A
2370(>)S
(old_slots))420 2454 A
2916({)S
3000(/*)S
(not)126 3126 A
(found,)252 3294 A
(but)126 3588 A
(room)168 3756 A
(left)168 3966 A
4176(*/)S
2880 V
(24992)210 648 A
2034(if)S
((flag)210 2160 A
2412(==)S
(ENTER))252 2538 A
(e_hit)210 2832 A
3084(=)S
(TRUE;)210 3168 A
2970 V
(24993)210 648 A
(break;)252 2034 A
3060 V
(24994)210 648 A
1698(})S
3150 V
(24995)210 648 A
3240 V
(24996)210 648 A
1698(/*)S
(Match)210 1824 A
(occurs)252 2076 A
2370(if)S
(string)252 2496 A
(found.)252 2790 A
3084(*/)S
3330 V
(24997)210 648 A
1698(if)S
((flag)210 1824 A
2076(!=)S
(ENTER)210 2202 A
2454(&&)S
(dp->d_ino)378 2580 A
3000(!=)S
3126(0))S
3252({)S
3420 V
(24998)210 648 A
2034(if)S
((flag)210 2160 A
2412(==)S
(IS_EMPTY))378 2538 A
2958({)S
3510 V
(24999)210 648 A
2370(/*)S
2496(If)S
(this)168 2622 A
(test)168 2832 A
(succeeds,)378 3042 A
(dir)126 3462 A
3630(is)S
(not)126 3756 A
(empty.)252 3924 A
4218(*/)S
3600 V
(25000)210 648 A
2370(if)S
((strcmp(dp->d_name,)798 2496 A
(".")126 3336 A
3504())S
3588(!=)S
3714(0)S
3798(&&)S
3690 V
(25001)210 648 A
(strcmp(dp->d_name,)756 2538 A
(".."))210 3336 A
3588(!=)S
3714(0))S
(match)210 3840 A
4092(=)S
4176(1;)S
3780 V
(25002)210 648 A
2034(})S
(else)168 2118 A
2328({)S
3870 V
(25003)210 648 A
2370(if)S
((strncmp(dp->d_name,)840 2496 A
(string,)294 3378 A
(NAME_MAX))378 3714 A
4134(==)S
4260(0))S
3960 V
(25004)210 648 A
(match)210 2706 A
2958(=)S
3042(1;)S
4050 V
(25005)210 648 A
2034(})S
4140 V
(25006)210 648 A
1698(})S
4230 V
(25007)210 648 A
4320 V
(25008)210 648 A
1698(if)S
((match))294 1824 A
2160({)S
4410 V
(25009)210 648 A
2034(/*)S
(LOOK_UP)294 2160 A
2496(or)S
(DELETE)252 2622 A
(found)210 2916 A
(what)168 3168 A
3378(it)S
(wanted.)294 3504 A
3840(*/)S
4500 V
(25010)210 648 A
2034(r)S
2118(=)S
(OK;)126 2202 A
4590 V
(25011)210 648 A
2034(if)S
((flag)210 2160 A
2412(==)S
(IS_EMPTY))378 2538 A
2958(r)S
3042(=)S
(ENOTEMPTY;)420 3126 A
4680 V
(25012)210 648 A
(else)168 2034 A
2244(if)S
((flag)210 2370 A
2622(==)S
(DELETE))294 2748 A
3084({)S
4770 V
(25013)210 648 A
2370(/*)S
(Save)168 2496 A
(d_ino)210 2706 A
(for)126 2958 A
(recovery.)378 3126 A
3546(*/)S
4860 V
(25014)210 648 A
2370(t)S
2454(=)S
(NAME_MAX)336 2538 A
2916(-)S
(sizeof(ino_t);)588 3000 A
4950 V
(25015)210 648 A
(*((ino_t)336 2370 A
2748(*))S
(&dp->d_name[t]))630 2874 A
3546(=)S
(dp->d_ino;)420 3630 A
5040 V
(25016)210 648 A
(dp->d_ino)378 2370 A
2790(=)S
2874(0;)S
3042(/*)S
(erase)210 3168 A
(entry)210 3420 A
3672(*/)S
5130 V
(25017)210 648 A
(bp->b_dirt)420 2370 A
2832(=)S
(DIRTY;)252 2916 A
5220 V
(25018)210 648 A
(ldir_ptr->i_update)756 2370 A
3168(|=)S
(CTIME)210 3294 A
3546(|)S
(MTIME;)252 3630 A
5310 V
(25019)210 648 A
(ldir_ptr->i_dirt)672 2370 A
3084(=)S
(DIRTY;)252 3168 A
5400 V
(25020)210 648 A
2034(})S
(else)168 2118 A
2328({)S
5490 V
(25021)210 648 A
2370(sp)S
2496(=)S
(ldir_ptr->i_sp;)630 2580 A
3378(/*)S
('flag')252 3504 A
3798(is)S
(LOOK_UP)294 3924 A
4260(*/)S
5580 V
(25022)210 648 A
(*numb)210 2370 A
2622(=)S
(conv2(sp->s_native,)798 2706 A
((int))210 3546 A
(dp->d_ino);)462 3798 A
5670 V
(25023)210 648 A
2034(})S
5760 V
(25024)210 648 A
(put_block(bp,)546 2034 A
(DIRECTORY_BLOCK);)714 2622 A
5850 V
(25025)210 648 A
(return(r);)420 2034 A
5940 V
(25026)210 648 A
1698(})S
6030 V
(25027)210 648 A
6120 V
(25028)210 648 A
6210 V
(25029)210 648 A
1698(/*)S
(Check)210 1824 A
(for)126 2076 A
(free)168 2244 A
(slot)168 2454 A
(for)126 2664 A
(the)126 2832 A
(benefit)294 3000 A
3336(of)S
(ENTER.)252 3462 A
3756(*/)S
8418 V
EP
%%Page: 345 345
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2151(File:)S
2384(src/fs/path.c)S
12 B
(345)180 4248 A
900 V
7 LST
(25030)210 648 A
1698(if)S
((flag)210 1824 A
2076(==)S
(ENTER)210 2202 A
2454(&&)S
(dp->d_ino)378 2580 A
3000(==)S
3126(0))S
3252({)S
990 V
(25031)210 648 A
(e_hit)210 2034 A
2286(=)S
(TRUE;)210 2370 A
2706(/*)S
2832(we)S
(found)210 2958 A
3210(a)S
(free)168 3294 A
(slot)168 3504 A
3714(*/)S
1080 V
(25032)210 648 A
(break;)252 2034 A
1170 V
(25033)210 648 A
1698(})S
1260 V
(25034)210 648 A
1362(})S
1350 V
(25035)210 648 A
1440 V
(25036)210 648 A
1362(/*)S
(The)126 1488 A
(whole)210 1656 A
(block)210 1908 A
(has)126 2160 A
(been)168 2328 A
(searched)336 2538 A
2916(or)S
(ENTER)210 3042 A
(has)126 3294 A
3462(a)S
(free)168 3546 A
(slot.)210 3756 A
4008(*/)S
1530 V
(25037)210 648 A
1362(if)S
((e_hit))294 1488 A
(break;)252 1824 A
2370(/*)S
(e_hit)210 2496 A
(set)126 2748 A
2916(if)S
(ENTER)210 3042 A
(can)126 3294 A
3462(be)S
(performed)378 3588 A
(now)126 4008 A
4176(*/)S
1620 V
(25038)210 648 A
(put_block(bp,)546 1362 A
(DIRECTORY_BLOCK);)714 1950 A
2706(/*)S
(otherwise,)420 2832 A
(continue)336 3294 A
(searching)378 3672 A
(dir)126 4092 A
4260(*/)S
1710 V
(25039)210 648 A
1110(})S
1800 V
(25040)210 648 A
1890 V
(25041)210 648 A
1110(/*)S
(The)126 1236 A
(whole)210 1404 A
(directory)378 1656 A
(has)126 2076 A
(now)126 2244 A
(been)168 2412 A
(searched.)378 2622 A
3042(*/)S
1980 V
(25042)210 648 A
1110(if)S
((flag)210 1236 A
1488(!=)S
(ENTER))252 1614 A
(return(flag)462 1908 A
2412(==)S
(IS_EMPTY)336 2538 A
2916(?)S
3000(OK)S
3126(:)S
(ENOENT);)336 3210 A
2070 V
(25043)210 648 A
2160 V
(25044)210 648 A
1110(/*)S
(This)168 1236 A
(call)168 1446 A
1656(is)S
(for)126 1782 A
(ENTER.)252 1950 A
2286(If)S
2412(no)S
(free)168 2538 A
(slot)168 2748 A
(has)126 2958 A
(been)168 3126 A
(found)210 3336 A
3588(so)S
(far,)168 3714 A
(try)126 3924 A
4092(to)S
2250 V
(25045)210 648 A
1152(*)S
(extend)252 1236 A
(directory.)420 1530 A
2340 V
(25046)210 648 A
1152(*/)S
2430 V
(25047)210 648 A
1110(if)S
((e_hit)252 1236 A
1530(==)S
(FALSE))252 1656 A
1950({)S
2034(/*)S
(directory)378 2160 A
2580(is)S
(full)168 2706 A
(and)126 2916 A
3084(no)S
(room)168 3210 A
(left)168 3420 A
3630(in)S
(last)168 3756 A
(block)210 3966 A
4218(*/)S
2520 V
(25048)210 648 A
(new_slots++;)504 1362 A
2370(/*)S
(increase)336 2496 A
(directory)378 2874 A
(size)168 3294 A
3504(by)S
3630(1)S
(entry)210 3714 A
3966(*/)S
2610 V
(25049)210 648 A
1362(if)S
((new_slots)420 1488 A
1950(==)S
2076(0))S
(return(EFBIG);)588 2202 A
2832(/*)S
(dir)126 2958 A
(size)168 3126 A
(limited)294 3336 A
3672(by)S
(slot)168 3798 A
(count)210 4008 A
4260(*/)S
2700 V
(25050)210 648 A
1362(if)S
1488(()S
((bp)126 1572 A
1740(=)S
(new_block(ldir_ptr,)798 1824 A
(ldir_ptr->i_size)))756 2664 A
3462(==)S
(NIL_BUF))336 3588 A
2790 V
(25051)210 648 A
(return(err_code);)714 1698 A
2880 V
(25052)210 648 A
1362(dp)S
1488(=)S
(&bp->b_dir[0];)588 1572 A
2970 V
(25053)210 648 A
(extended)336 1362 A
1740(=)S
1824(1;)S
3060 V
(25054)210 648 A
1110(})S
3150 V
(25055)210 648 A
3240 V
(25056)210 648 A
1110(/*)S
('bp')168 1236 A
(now)126 1446 A
(points)252 1614 A
1908(to)S
2034(a)S
(directory)378 2118 A
(block)210 2538 A
(with)168 2790 A
(space.)252 3000 A
('dp')168 3294 A
(points)252 3504 A
3798(to)S
(slot.)210 3924 A
4176(*/)S
3330 V
(25057)210 648 A
((void))252 1110 A
(memset(dp->d_name,)756 1404 A
2202(0,)S
((size_t))336 2328 A
(NAME_MAX);)420 2706 A
3168(/*)S
(clear)210 3294 A
(entry)210 3546 A
3798(*/)S
3420 V
(25058)210 648 A
(for)126 1110 A
1278((i)S
1404(=)S
1488(0;)S
(string[i])378 1614 A
2034(&&)S
2160(i)S
2244(<)S
(NAME_MAX;)378 2328 A
(i++))168 2748 A
(dp->d_name[i])546 2958 A
3546(=)S
(string[i];)420 3630 A
3510 V
(25059)210 648 A
1110(sp)S
1236(=)S
(ldir_ptr->i_sp;)630 1320 A
3600 V
(25060)210 648 A
(dp->d_ino)378 1110 A
1530(=)S
(conv2(sp->s_native,)798 1614 A
((int))210 2454 A
(*numb);)294 2706 A
3690 V
(25061)210 648 A
(bp->b_dirt)420 1110 A
1572(=)S
(DIRTY;)252 1656 A
3780 V
(25062)210 648 A
(put_block(bp,)546 1110 A
(DIRECTORY_BLOCK);)714 1698 A
3870 V
(25063)210 648 A
(ldir_ptr->i_update)756 1110 A
1908(|=)S
(CTIME)210 2034 A
2286(|)S
(MTIME;)252 2370 A
2706(/*)S
(mark)168 2832 A
(mtime)210 3042 A
(for)126 3294 A
(update)252 3462 A
(later)210 3756 A
4008(*/)S
3960 V
(25064)210 648 A
(ldir_ptr->i_dirt)672 1110 A
1824(=)S
(DIRTY;)252 1908 A
4050 V
(25065)210 648 A
1110(if)S
((new_slots)420 1236 A
1698(>)S
(old_slots))420 1782 A
2244({)S
4140 V
(25066)210 648 A
(ldir_ptr->i_size)672 1362 A
2076(=)S
((off_t))294 2160 A
(new_slots)378 2496 A
2916(*)S
(DIR_ENTRY_SIZE;)630 3000 A
4230 V
(25067)210 648 A
1362(/*)S
(Send)168 1488 A
(the)126 1698 A
(change)252 1866 A
2160(to)S
(disk)168 2286 A
2496(if)S
(the)126 2622 A
(directory)378 2790 A
3210(is)S
(extended.)378 3336 A
3756(*/)S
4320 V
(25068)210 648 A
1362(if)S
((extended))420 1488 A
(rw_inode(ldir_ptr,)756 1950 A
(WRITING);)378 2748 A
4410 V
(25069)210 648 A
1110(})S
4500 V
(25070)210 648 A
(return(OK);)462 1110 A
4590 V
(25071)210 648 A
1026(})S
5040 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
5130 V
(src/fs/mount.c)588 2034 A
5220 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
5400 V
(25100)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(performs)336 1572 A
(the)126 1950 A
(MOUNT)210 2118 A
(and)126 2370 A
(UMOUNT)252 2538 A
(system)252 2832 A
(calls.)252 3126 A
5490 V
(25101)210 648 A
1068(*)S
5580 V
(25102)210 648 A
1068(*)S
(The)126 1152 A
(entry)210 1320 A
(points)252 1572 A
(into)168 1866 A
(this)168 2076 A
(file)168 2286 A
(are)126 2496 A
5670 V
(25103)210 648 A
1068(*)S
(do_mount:)378 1236 A
(perform)294 1698 A
(the)126 2034 A
(MOUNT)210 2202 A
(system)252 2454 A
(call)168 2748 A
5760 V
(25104)210 648 A
1068(*)S
(do_umount:)420 1236 A
(perform)294 1698 A
(the)126 2034 A
(UMOUNT)252 2202 A
(system)252 2496 A
(call)168 2790 A
5850 V
(25105)210 648 A
1068(*/)S
5940 V
(25106)210 648 A
6030 V
(25107)210 648 A
(#include)336 1026 A
("fs.h")252 1404 A
6120 V
(25108)210 648 A
(#include)336 1026 A
(<fcntl.h>)378 1404 A
6210 V
(25109)210 648 A
(#include)336 1026 A
(<minix/com.h>)546 1404 A
8418 V
EP
%%Page: 346 346
BP
/slant 0 def
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630 V
12 B
(346)180 648 A
11 R
2105(File:)S
(src/fs/mount.c)632 2338 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(25110)210 648 A
(#include)336 1026 A
(<sys/stat.h>)504 1404 A
990 V
(25111)210 648 A
(#include)336 1026 A
("buf.h")294 1404 A
1080 V
(25112)210 648 A
(#include)336 1026 A
("dev.h")294 1404 A
1170 V
(25113)210 648 A
(#include)336 1026 A
("file.h")336 1404 A
1260 V
(25114)210 648 A
(#include)336 1026 A
("fproc.h")378 1404 A
1350 V
(25115)210 648 A
(#include)336 1026 A
("inode.h")378 1404 A
1440 V
(25116)210 648 A
(#include)336 1026 A
("param.h")378 1404 A
1530 V
(25117)210 648 A
(#include)336 1026 A
("super.h")378 1404 A
1620 V
(25118)210 648 A
1710 V
(25119)210 648 A
(PRIVATE)294 1026 A
(message)294 1362 A
(dev_mess;)378 1698 A
1800 V
(25120)210 648 A
1890 V
(25121)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(dev_t)210 1866 A
(name_to_dev,)504 2118 A
((char)210 2664 A
(*path))252 2916 A
4050();)S
1980 V
(25122)210 648 A
2070 V
(25123)210 648 A
(/*===========================================================================*)3276 1026 A
2160 V
(25124)210 648 A
1068(*)S
(do_mount)336 2370 A
4260(*)S
2250 V
(25125)210 648 A
(*===========================================================================*/)3276 1068 A
2340 V
(25126)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(do_mount())420 1488 A
2430 V
(25127)210 648 A
1026({)S
2520 V
(25128)210 648 A
1026(/*)S
(Perform)294 1152 A
(the)126 1488 A
(mount(name,)462 1656 A
(mfile,)252 2160 A
(rd_only))336 2454 A
(system)252 2832 A
(call.)210 3126 A
3378(*/)S
2610 V
(25129)210 648 A
2700 V
(25130)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*rip,)210 2034 A
(*root_ip;)378 2286 A
2790 V
(25131)210 648 A
(struct)252 1110 A
(super_block)462 1404 A
(*xp,)168 1908 A
(*sp;)168 2118 A
2880 V
(25132)210 648 A
(dev_t)210 1110 A
(dev;)168 1362 A
2970 V
(25133)210 648 A
(mode_t)252 1110 A
(bits;)210 1404 A
3060 V
(25134)210 648 A
(int)126 1110 A
(rdir,)210 1278 A
(mdir;)210 1530 A
2370(/*)S
(TRUE)168 2496 A
(iff)126 2706 A
({root|mount})504 2874 A
(file)168 3420 A
3630(is)S
(dir)126 3756 A
3924(*/)S
3150 V
(25135)210 648 A
(int)126 1110 A
1278(r,)S
(found,)252 1404 A
(major,)252 1698 A
(task;)210 1992 A
3240 V
(25136)210 648 A
3330 V
(25137)210 648 A
1110(/*)S
(Only)168 1236 A
(the)126 1446 A
(super-user)420 1614 A
(may)126 2076 A
2244(do)S
(MOUNT.)252 2370 A
2664(*/)S
3420 V
(25138)210 648 A
1110(if)S
((!super_user))546 1236 A
(return(EPERM);)588 1824 A
3510 V
(25139)210 648 A
3600 V
(25140)210 648 A
1110(/*)S
1236(If)S
('name')252 1362 A
1656(is)S
(not)126 1782 A
(for)126 1950 A
2118(a)S
(block)210 2202 A
(special)294 2454 A
(file,)210 2790 A
(return)252 3042 A
(error.)252 3336 A
3630(*/)S
3690 V
(25141)210 648 A
1110(if)S
((fetch_name(name1,)756 1236 A
(name1_length,)546 2034 A
(M1))126 2622 A
2790(!=)S
(OK))126 2916 A
(return(err_code);)714 3084 A
3780 V
(25142)210 648 A
1110(if)S
1236(()S
((dev)168 1320 A
1530(=)S
(name_to_dev(user_path)))966 1614 A
2622(==)S
(NO_DEV))294 2748 A
(return(err_code);)714 3084 A
3870 V
(25143)210 648 A
3960 V
(25144)210 648 A
1110(/*)S
(Scan)168 1236 A
(super)210 1446 A
(block)210 1698 A
(table)210 1950 A
2202(to)S
(see)126 2328 A
2496(if)S
(dev)126 2622 A
(already)294 2790 A
(mounted)294 3126 A
3462(&)S
(find)168 3546 A
3756(a)S
(free)168 3840 A
(slot.*/)294 4050 A
4050 V
(25145)210 648 A
1110(sp)S
1236(=)S
(NIL_SUPER;)420 1320 A
4140 V
(25146)210 648 A
(found)210 1110 A
1362(=)S
(FALSE;)252 1446 A
4230 V
(25147)210 648 A
(for)126 1110 A
((xp)126 1278 A
1446(=)S
(&super_block[0];)672 1530 A
2244(xp)S
2370(<)S
(&super_block[NR_SUPERS];)1008 2454 A
(xp++))210 3504 A
3756({)S
4320 V
(25148)210 648 A
1362(if)S
((xp->s_dev)420 1488 A
1950(==)S
(dev))168 2076 A
(found)210 2286 A
2538(=)S
(TRUE;)210 2622 A
3042(/*)S
3168(is)S
3294(it)S
(mounted)294 3420 A
(already?)336 3756 A
4134(*/)S
4410 V
(25149)210 648 A
1362(if)S
((xp->s_dev)420 1488 A
1950(==)S
(NO_DEV))294 2076 A
2412(sp)S
2538(=)S
(xp;)126 2622 A
3042(/*)S
(record)252 3168 A
(free)168 3462 A
(slot)168 3672 A
3882(*/)S
4500 V
(25150)210 648 A
1110(})S
4590 V
(25151)210 648 A
1110(if)S
((found))294 1236 A
(return(EBUSY);)588 1572 A
2370(/*)S
(already)294 2496 A
(mounted)294 2832 A
3168(*/)S
4680 V
(25152)210 648 A
1110(if)S
((sp)126 1236 A
1404(==)S
(NIL_SUPER))420 1530 A
(return(ENFILE);)630 1992 A
2706(/*)S
2832(no)S
(super)210 2958 A
(block)210 3210 A
(available)378 3462 A
3882(*/)S
4770 V
(25153)210 648 A
4860 V
(25154)210 648 A
(dev_mess.m_type)630 1110 A
1782(=)S
(DEV_OPEN;)378 1866 A
2706(/*)S
(distinguish)462 2832 A
(from)168 3336 A
(close)210 3546 A
3798(*/)S
4950 V
(25155)210 648 A
(dev_mess.DEVICE)630 1110 A
1782(=)S
(dev;)168 1866 A
2706(/*)S
(Touch)210 2832 A
(the)126 3084 A
(device.)294 3252 A
3588(*/)S
5040 V
(25156)210 648 A
1110(if)S
((rd_only))378 1236 A
(dev_mess.COUNT)588 1656 A
2286(=)S
(R_BIT;)252 2370 A
5130 V
(25157)210 648 A
(else)168 1110 A
(dev_mess.COUNT)588 1362 A
1992(=)S
(R_BIT|W_BIT;)504 2076 A
5220 V
(25158)210 648 A
5310 V
(25159)210 648 A
(major)210 1110 A
1362(=)S
((dev)168 1446 A
1656(>>)S
(MAJOR))252 1782 A
2076(&)S
(BYTE;)210 2160 A
5400 V
(25160)210 648 A
1110(if)S
((major)252 1236 A
1530(<=)S
1656(0)S
1740(||)S
(major)210 1866 A
2118(>=)S
(max_major))420 2244 A
(return(ENODEV);)630 2706 A
5490 V
(25161)210 648 A
(task)168 1110 A
1320(=)S
(dmap[major].dmap_task;)924 1404 A
2706(/*)S
(device)252 2832 A
(task)168 3126 A
3336(nr)S
3462(*/)S
5580 V
(25162)210 648 A
((*dmap[major].dmap_open)(task,)1260 1110 A
(&dev_mess);)462 2412 A
5670 V
(25163)210 648 A
1110(if)S
((dev_mess.REP_STATUS)840 1236 A
2118(!=)S
(OK))126 2244 A
(return(EINVAL);)630 2412 A
5760 V
(25164)210 648 A
5850 V
(25165)210 648 A
1110(/*)S
(Fill)168 1236 A
1446(in)S
(the)126 1572 A
(super)210 1740 A
(block.)252 1992 A
2286(*/)S
5940 V
(25166)210 648 A
(sp->s_dev)378 1110 A
1530(=)S
(dev;)168 1614 A
2370(/*)S
(read_super())504 2496 A
(needs)210 3042 A
3294(to)S
(know)168 3420 A
(which)210 3630 A
(dev)126 3882 A
4050(*/)S
6030 V
(25167)210 648 A
1110(r)S
1194(=)S
(read_super(sp);)630 1278 A
6120 V
(25168)210 648 A
6210 V
(25169)210 648 A
1110(/*)S
1236(Is)S
1362(it)S
(recognized)420 1488 A
1950(as)S
2076(a)S
(Minix)210 2160 A
(filesystem?)462 2412 A
2916(*/)S
8418 V
EP
%%Page: 347 347
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2105(File:)S
(src/fs/mount.c)632 2338 A
12 B
(347)180 4248 A
900 V
7 LST
(25170)210 648 A
1110(if)S
1236((r)S
1362(!=)S
(OK))126 1488 A
1656({)S
990 V
(25171)210 648 A
(dev_mess.m_type)630 1362 A
2034(=)S
(DEV_CLOSE;)420 2118 A
1080 V
(25172)210 648 A
(dev_mess.DEVICE)630 1362 A
2034(=)S
(dev;)168 2118 A
1170 V
(25173)210 648 A
((*dmap[major].dmap_close)(task,)1302 1362 A
(&dev_mess);)462 2706 A
1260 V
(25174)210 648 A
(return(r);)420 1362 A
1350 V
(25175)210 648 A
1110(})S
1440 V
(25176)210 648 A
1530 V
(25177)210 648 A
1110(/*)S
(Now)126 1236 A
(get)126 1404 A
(the)126 1572 A
(inode)210 1740 A
1992(of)S
(the)126 2118 A
(file)168 2286 A
2496(to)S
2622(be)S
(mounted)294 2748 A
(on.)126 3084 A
3252(*/)S
1620 V
(25178)210 648 A
1110(if)S
((fetch_name(name2,)756 1236 A
(name2_length,)546 2034 A
(M1))126 2622 A
2790(!=)S
(OK))126 2916 A
3084({)S
1710 V
(25179)210 648 A
(sp->s_dev)378 1362 A
1782(=)S
(NO_DEV;)294 1866 A
1800 V
(25180)210 648 A
(dev_mess.m_type)630 1362 A
2034(=)S
(DEV_CLOSE;)420 2118 A
1890 V
(25181)210 648 A
(dev_mess.DEVICE)630 1362 A
2034(=)S
(dev;)168 2118 A
1980 V
(25182)210 648 A
((*dmap[major].dmap_close)(task,)1302 1362 A
(&dev_mess);)462 2706 A
2070 V
(25183)210 648 A
(return(err_code);)714 1362 A
2160 V
(25184)210 648 A
1110(})S
2250 V
(25185)210 648 A
1110(if)S
1236(()S
((rip)168 1320 A
1530(=)S
(eat_path(user_path)))840 1614 A
2496(==)S
(NIL_INODE))420 2622 A
3084({)S
2340 V
(25186)210 648 A
(sp->s_dev)378 1362 A
1782(=)S
(NO_DEV;)294 1866 A
2430 V
(25187)210 648 A
(dev_mess.m_type)630 1362 A
2034(=)S
(DEV_CLOSE;)420 2118 A
2520 V
(25188)210 648 A
(dev_mess.DEVICE)630 1362 A
2034(=)S
(dev;)168 2118 A
2610 V
(25189)210 648 A
((*dmap[major].dmap_close)(task,)1302 1362 A
(&dev_mess);)462 2706 A
2700 V
(25190)210 648 A
(return(err_code);)714 1362 A
2790 V
(25191)210 648 A
1110(})S
2880 V
(25192)210 648 A
2970 V
(25193)210 648 A
1110(/*)S
1236(It)S
(may)126 1362 A
(not)126 1530 A
1698(be)S
(busy.)210 1824 A
2076(*/)S
3060 V
(25194)210 648 A
1110(r)S
1194(=)S
(OK;)126 1278 A
3150 V
(25195)210 648 A
1110(if)S
((rip->i_count)546 1236 A
1824(>)S
1908(1))S
2034(r)S
2118(=)S
(EBUSY;)252 2202 A
3240 V
(25196)210 648 A
3330 V
(25197)210 648 A
1110(/*)S
1236(It)S
(may)126 1362 A
(not)126 1530 A
1698(be)S
(special.)336 1824 A
2202(*/)S
3420 V
(25198)210 648 A
(bits)168 1110 A
1320(=)S
(rip->i_mode)462 1404 A
1908(&)S
(I_TYPE;)294 1992 A
3510 V
(25199)210 648 A
1110(if)S
((bits)210 1236 A
1488(==)S
(I_BLOCK_SPECIAL)630 1614 A
2286(||)S
(bits)168 2412 A
2622(==)S
(I_CHAR_SPECIAL))630 2748 A
3420(r)S
3504(=)S
(ENOTDIR;)336 3588 A
3600 V
(25200)210 648 A
3690 V
(25201)210 648 A
1110(/*)S
(Get)126 1236 A
(the)126 1404 A
(root)168 1572 A
(inode)210 1782 A
2034(of)S
(the)126 2160 A
(mounted)294 2328 A
(file)168 2664 A
(system.)294 2874 A
3210(*/)S
3780 V
(25202)210 648 A
(root_ip)294 1110 A
1446(=)S
(NIL_INODE;)420 1530 A
2370(/*)S
2496(if)S
('r')126 2622 A
(not)126 2790 A
(OK,)126 2958 A
(make)168 3126 A
(sure)168 3336 A
(this)168 3546 A
3756(is)S
(defined)294 3882 A
4218(*/)S
3870 V
(25203)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1656({)S
3960 V
(25204)210 648 A
1362(if)S
1488(()S
((root_ip)336 1572 A
1950(=)S
(get_inode(dev,)588 2034 A
(ROOT_INODE)))504 2664 A
3210(==)S
(NIL_INODE))420 3336 A
3798(r)S
3882(=)S
(err_code;)378 3966 A
4050 V
(25205)210 648 A
1110(})S
4140 V
(25206)210 648 A
1110(if)S
((root_ip)336 1236 A
1614(!=)S
(NIL_INODE)378 1740 A
2160(&&)S
(root_ip->i_mode)630 2286 A
2958(==)S
3084(0))S
3210(r)S
3294(=)S
(EINVAL;)294 3378 A
4230 V
(25207)210 648 A
4320 V
(25208)210 648 A
1110(/*)S
(File)168 1236 A
(types)210 1446 A
1698(of)S
('rip')210 1824 A
(and)126 2076 A
('root_ip')378 2244 A
(may)126 2664 A
(not)126 2832 A
(conflict.)378 3000 A
3420(*/)S
4410 V
(25209)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1656({)S
4500 V
(25210)210 648 A
(mdir)168 1362 A
1572(=)S
(((rip->i_mode)546 1656 A
2244(&)S
(I_TYPE))294 2328 A
2664(==)S
(I_DIRECTORY);)546 2790 A
3420(/*)S
(TRUE)168 3546 A
(iff)126 3756 A
(dir)126 3924 A
4092(*/)S
4590 V
(25211)210 648 A
(rdir)168 1362 A
1572(=)S
(((root_ip->i_mode)714 1656 A
2412(&)S
(I_TYPE))294 2496 A
2832(==)S
(I_DIRECTORY);)546 2958 A
4680 V
(25212)210 648 A
1362(if)S
((!mdir)252 1488 A
1782(&&)S
(rdir))210 1908 A
2160(r)S
2244(=)S
(EISDIR;)294 2328 A
4770 V
(25213)210 648 A
1110(})S
4860 V
(25214)210 648 A
4950 V
(25215)210 648 A
1110(/*)S
1236(If)S
(error,)252 1362 A
(return)252 1656 A
(the)126 1950 A
(super)210 2118 A
(block)210 2370 A
(and)126 2622 A
(both)168 2790 A
(inodes;)294 3000 A
(release)294 3336 A
(the)126 3672 A
(maps.)210 3840 A
4092(*/)S
5040 V
(25216)210 648 A
1110(if)S
1236((r)S
1362(!=)S
(OK))126 1488 A
1656({)S
5130 V
(25217)210 648 A
(put_inode(rip);)630 1362 A
5220 V
(25218)210 648 A
(put_inode(root_ip);)798 1362 A
5310 V
(25219)210 648 A
((void))252 1362 A
(do_sync();)420 1656 A
5400 V
(25220)210 648 A
(invalidate(dev);)672 1362 A
5490 V
(25221)210 648 A
5580 V
(25222)210 648 A
(sp->s_dev)378 1362 A
1782(=)S
(NO_DEV;)294 1866 A
5670 V
(25223)210 648 A
(dev_mess.m_type)630 1362 A
2034(=)S
(DEV_CLOSE;)420 2118 A
5760 V
(25224)210 648 A
(dev_mess.DEVICE)630 1362 A
2034(=)S
(dev;)168 2118 A
5850 V
(25225)210 648 A
((*dmap[major].dmap_close)(task,)1302 1362 A
(&dev_mess);)462 2706 A
5940 V
(25226)210 648 A
(return(r);)420 1362 A
6030 V
(25227)210 648 A
1110(})S
6120 V
(25228)210 648 A
6210 V
(25229)210 648 A
1110(/*)S
(Nothing)294 1236 A
(else)168 1572 A
(can)126 1782 A
1950(go)S
(wrong.)252 2076 A
(Perform)294 2412 A
(the)126 2748 A
(mount.)252 2916 A
3210(*/)S
8418 V
EP
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BP
/slant 0 def
/height 0 def
630 V
12 B
(348)180 648 A
11 R
2105(File:)S
(src/fs/mount.c)632 2338 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(25230)210 648 A
(rip->i_mount)504 1110 A
1656(=)S
(I_MOUNT;)336 1740 A
2370(/*)S
(this)168 2496 A
(bit)126 2706 A
(says)168 2874 A
(the)126 3084 A
(inode)210 3252 A
3504(is)S
(mounted)294 3630 A
3966(on)S
4092(*/)S
990 V
(25231)210 648 A
(sp->s_imount)504 1110 A
1656(=)S
(rip;)168 1740 A
1080 V
(25232)210 648 A
(sp->s_isup)420 1110 A
1572(=)S
(root_ip;)336 1656 A
1170 V
(25233)210 648 A
(sp->s_rd_only)546 1110 A
1698(=)S
(rd_only;)336 1782 A
1260 V
(25234)210 648 A
(return(OK);)462 1110 A
1350 V
(25235)210 648 A
1026(})S
1620 V
(25238)210 648 A
(/*===========================================================================*)3276 1026 A
1710 V
(25239)210 648 A
1068(*)S
(do_umount)378 2370 A
4260(*)S
1800 V
(25240)210 648 A
(*===========================================================================*/)3276 1068 A
1890 V
(25241)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(do_umount())462 1488 A
1980 V
(25242)210 648 A
1026({)S
2070 V
(25243)210 648 A
1026(/*)S
(Perform)294 1152 A
(the)126 1488 A
(umount(name))504 1656 A
(system)252 2202 A
(call.)210 2496 A
2748(*/)S
2160 V
(25244)210 648 A
2250 V
(25245)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*rip;)210 2034 A
2340 V
(25246)210 648 A
(struct)252 1110 A
(super_block)462 1404 A
(*sp,)168 1908 A
(*sp1;)210 2118 A
2430 V
(25247)210 648 A
(dev_t)210 1110 A
(dev;)168 1362 A
2520 V
(25248)210 648 A
(int)126 1110 A
(count;)252 1278 A
2610 V
(25249)210 648 A
(int)126 1110 A
(major,)252 1278 A
(task;)210 1572 A
2700 V
(25250)210 648 A
2790 V
(25251)210 648 A
1110(/*)S
(Only)168 1236 A
(the)126 1446 A
(super-user)420 1614 A
(may)126 2076 A
2244(do)S
(UMOUNT.)294 2370 A
2706(*/)S
2880 V
(25252)210 648 A
1110(if)S
((!super_user))546 1236 A
(return(EPERM);)588 1824 A
2970 V
(25253)210 648 A
3060 V
(25254)210 648 A
1110(/*)S
1236(If)S
('name')252 1362 A
1656(is)S
(not)126 1782 A
(for)126 1950 A
2118(a)S
(block)210 2202 A
(special)294 2454 A
(file,)210 2790 A
(return)252 3042 A
(error.)252 3336 A
3630(*/)S
3150 V
(25255)210 648 A
1110(if)S
((fetch_name(name,)714 1236 A
(name_length,)504 1992 A
(M3))126 2538 A
2706(!=)S
(OK))126 2832 A
(return(err_code);)714 3000 A
3240 V
(25256)210 648 A
1110(if)S
1236(()S
((dev)168 1320 A
1530(=)S
(name_to_dev(user_path)))966 1614 A
2622(==)S
(NO_DEV))294 2748 A
(return(err_code);)714 3084 A
3330 V
(25257)210 648 A
3420 V
(25258)210 648 A
1110(/*)S
(See)126 1236 A
1404(if)S
(the)126 1530 A
(mounted)294 1698 A
(device)252 2034 A
2328(is)S
(busy.)210 2454 A
(Only)168 2748 A
2958(1)S
(inode)210 3042 A
(using)210 3294 A
3546(it)S
(should)252 3672 A
3966(be)S
3510 V
(25259)210 648 A
1152(*)S
(open)168 1236 A
1446(--)S
(the)126 1572 A
(root)168 1740 A
(inode)210 1950 A
2202(--)S
(and)126 2328 A
(that)168 2496 A
(inode)210 2706 A
(only)168 2958 A
3168(1)S
(time.)210 3252 A
3600 V
(25260)210 648 A
1152(*/)S
3690 V
(25261)210 648 A
(count)210 1110 A
1362(=)S
1446(0;)S
3780 V
(25262)210 648 A
(for)126 1110 A
((rip)168 1278 A
1488(=)S
(&inode[0];)420 1572 A
(rip<)168 2034 A
(&inode[NR_INODES];)756 2244 A
(rip++))252 3042 A
3870 V
(25263)210 648 A
1362(if)S
((rip->i_count)546 1488 A
2076(>)S
2160(0)S
2244(&&)S
(rip->i_dev)420 2370 A
2832(==)S
(dev))168 2958 A
(count)210 3168 A
3420(+=)S
(rip->i_count;)546 3546 A
3960 V
(25264)210 648 A
1110(if)S
((count)252 1236 A
1530(>)S
1614(1))S
(return(EBUSY);)588 1740 A
2370(/*)S
(can't)210 2496 A
(umount)252 2748 A
3042(a)S
(busy)168 3126 A
(file)168 3336 A
(system)252 3546 A
3840(*/)S
4050 V
(25265)210 648 A
4140 V
(25266)210 648 A
1110(/*)S
(Find)168 1236 A
(the)126 1446 A
(super)210 1614 A
(block.)252 1866 A
2160(*/)S
4230 V
(25267)210 648 A
1110(sp)S
1236(=)S
(NIL_SUPER;)420 1320 A
4320 V
(25268)210 648 A
(for)126 1110 A
((sp1)168 1278 A
1488(=)S
(&super_block[0];)672 1572 A
(sp1)126 2286 A
2454(<)S
(&super_block[NR_SUPERS];)1008 2538 A
(sp1++))252 3588 A
3882({)S
4410 V
(25269)210 648 A
1362(if)S
((sp1->s_dev)462 1488 A
1992(==)S
(dev))168 2118 A
2328({)S
4500 V
(25270)210 648 A
1698(sp)S
1824(=)S
(sp1;)168 1908 A
4590 V
(25271)210 648 A
(break;)252 1698 A
4680 V
(25272)210 648 A
1362(})S
4770 V
(25273)210 648 A
1110(})S
4860 V
(25274)210 648 A
4950 V
(25275)210 648 A
1110(/*)S
(Sync)168 1236 A
(the)126 1446 A
(disk,)210 1614 A
(and)126 1866 A
(invalidate)420 2034 A
(cache.)252 2496 A
2790(*/)S
5040 V
(25276)210 648 A
((void))252 1110 A
(do_sync();)420 1404 A
2370(/*)S
(force)210 2496 A
(any)126 2748 A
(cached)252 2916 A
(blocks)252 3210 A
(out)126 3504 A
3672(of)S
(memory)252 3798 A
4092(*/)S
5130 V
(25277)210 648 A
(invalidate(dev);)672 1110 A
2370(/*)S
(invalidate)420 2496 A
(cache)210 2958 A
(entries)294 3210 A
(for)126 3546 A
(this)168 3714 A
(dev)126 3924 A
4092(*/)S
5220 V
(25278)210 648 A
1110(if)S
((sp)126 1236 A
1404(==)S
(NIL_SUPER))420 1530 A
(return(EINVAL);)630 1992 A
5310 V
(25279)210 648 A
5400 V
(25280)210 648 A
(major)210 1110 A
1362(=)S
((dev)168 1446 A
1656(>>)S
(MAJOR))252 1782 A
2076(&)S
(BYTE;)210 2160 A
2706(/*)S
(major)210 2832 A
(device)252 3084 A
3378(nr)S
3504(*/)S
5490 V
(25281)210 648 A
(task)168 1110 A
1320(=)S
(dmap[major].dmap_task;)924 1404 A
2370(/*)S
(device)252 2496 A
(task)168 2790 A
3000(nr)S
3126(*/)S
5580 V
(25282)210 648 A
(dev_mess.m_type)630 1110 A
1782(=)S
(DEV_CLOSE;)420 1866 A
2706(/*)S
(distinguish)462 2832 A
(from)168 3336 A
(open)168 3546 A
3756(*/)S
5670 V
(25283)210 648 A
(dev_mess.DEVICE)630 1110 A
1782(=)S
(dev;)168 1866 A
5760 V
(25284)210 648 A
((*dmap[major].dmap_close)(task,)1302 1110 A
(&dev_mess);)462 2454 A
5850 V
(25285)210 648 A
5940 V
(25286)210 648 A
1110(/*)S
(Finish)252 1236 A
(off)126 1530 A
(the)126 1698 A
(unmount.)336 1866 A
2244(*/)S
6030 V
(25287)210 648 A
(sp->s_imount->i_mount)882 1110 A
2034(=)S
(NO_MOUNT;)378 2118 A
2706(/*)S
(inode)210 2832 A
(returns)294 3084 A
3420(to)S
(normal)252 3546 A
3840(*/)S
6120 V
(25288)210 648 A
(put_inode(sp->s_imount);)1008 1110 A
2370(/*)S
(release)294 2496 A
(the)126 2832 A
(inode)210 3000 A
(mounted)294 3252 A
3588(on)S
3714(*/)S
6210 V
(25289)210 648 A
(put_inode(sp->s_isup);)924 1110 A
2370(/*)S
(release)294 2496 A
(the)126 2832 A
(root)168 3000 A
(inode)210 3210 A
3462(of)S
(the)126 3588 A
(mounted)294 3756 A
4092(fs)S
4218(*/)S
8418 V
EP
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BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2105(File:)S
(src/fs/mount.c)632 2338 A
12 B
(349)180 4248 A
900 V
7 LST
(25290)210 648 A
(sp->s_imount)504 1110 A
1656(=)S
(NIL_INODE;)420 1740 A
990 V
(25291)210 648 A
(sp->s_dev)378 1110 A
1530(=)S
(NO_DEV;)294 1614 A
1080 V
(25292)210 648 A
(return(OK);)462 1110 A
1170 V
(25293)210 648 A
1026(})S
1440 V
(25296)210 648 A
(/*===========================================================================*)3276 1026 A
1530 V
(25297)210 648 A
1068(*)S
(name_to_dev)462 2370 A
4260(*)S
1620 V
(25298)210 648 A
(*===========================================================================*/)3276 1068 A
1710 V
(25299)210 648 A
(PRIVATE)294 1026 A
(dev_t)210 1362 A
(name_to_dev(path))714 1614 A
1800 V
(25300)210 648 A
(char)168 1026 A
(*path;)252 1236 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(path)168 2958 A
(name)168 3168 A
3378(*/)S
1890 V
(25301)210 648 A
1026({)S
1980 V
(25302)210 648 A
1026(/*)S
(Convert)294 1152 A
(the)126 1488 A
(block)210 1656 A
(special)294 1908 A
(file)168 2244 A
('path')252 2454 A
2748(to)S
2874(a)S
(device)252 2958 A
(number.)294 3252 A
3630(If)S
('path')252 3756 A
2070 V
(25303)210 648 A
1068(*)S
1152(is)S
(not)126 1278 A
1446(a)S
(block)210 1530 A
(special)294 1782 A
(file,)210 2118 A
(return)252 2370 A
(error)210 2664 A
(code)168 2916 A
3126(in)S
('err_code'.)462 3252 A
2160 V
(25304)210 648 A
1068(*/)S
2250 V
(25305)210 648 A
2340 V
(25306)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*rip;)210 2034 A
2430 V
(25307)210 648 A
(register)336 1110 A
(dev_t)210 1488 A
(dev;)168 1740 A
2520 V
(25308)210 648 A
2610 V
(25309)210 648 A
1110(/*)S
1236(If)S
('path')252 1362 A
(can't)210 1656 A
1908(be)S
(opened,)294 2034 A
(give)168 2370 A
2580(up)S
(immediately.)504 2706 A
3252(*/)S
2700 V
(25310)210 648 A
1110(if)S
1236(()S
((rip)168 1320 A
1530(=)S
(eat_path(path)))630 1614 A
2286(==)S
(NIL_INODE))420 2412 A
(return(NO_DEV);)630 2874 A
2790 V
(25311)210 648 A
2880 V
(25312)210 648 A
1110(/*)S
1236(If)S
('path')252 1362 A
1656(is)S
(not)126 1782 A
1950(a)S
(block)210 2034 A
(special)294 2286 A
(file,)210 2622 A
(return)252 2874 A
(error.)252 3168 A
3462(*/)S
2970 V
(25313)210 648 A
1110(if)S
1236(()S
((rip->i_mode)504 1320 A
1866(&)S
(I_TYPE))294 1950 A
2286(!=)S
(I_BLOCK_SPECIAL))672 2412 A
3126({)S
3060 V
(25314)210 648 A
(err_code)336 1362 A
1740(=)S
(ENOTBLK;)336 1824 A
3150 V
(25315)210 648 A
(put_inode(rip);)630 1362 A
3240 V
(25316)210 648 A
(return(NO_DEV);)630 1362 A
3330 V
(25317)210 648 A
1110(})S
3420 V
(25318)210 648 A
3510 V
(25319)210 648 A
1110(/*)S
(Extract)294 1236 A
(the)126 1572 A
(device)252 1740 A
(number.)294 2034 A
2370(*/)S
3600 V
(25320)210 648 A
(dev)126 1110 A
1278(=)S
((dev_t))294 1362 A
(rip->i_zone[0];)630 1698 A
3690 V
(25321)210 648 A
(put_inode(rip);)630 1110 A
3780 V
(25322)210 648 A
(return(dev);)504 1110 A
3870 V
(25323)210 648 A
1026(})S
4140 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
4230 V
(src/fs/link.c)546 2034 A
4320 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
4500 V
(25400)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(handles)294 1572 A
(the)126 1908 A
(LINK)168 2076 A
(and)126 2286 A
(UNLINK)252 2454 A
(system)252 2748 A
(calls.)252 3042 A
3378(It)S
(also)168 3504 A
(deals)210 3714 A
(with)168 3966 A
4590 V
(25401)210 648 A
1068(*)S
(deallocating)504 1152 A
(the)126 1698 A
(storage)294 1866 A
(used)168 2202 A
2412(by)S
2538(a)S
(file)168 2622 A
(when)168 2832 A
(the)126 3042 A
(last)168 3210 A
(UNLINK)252 3420 A
3714(is)S
(done)168 3840 A
4050(to)S
4176(a)S
4680 V
(25402)210 648 A
1068(*)S
(file)168 1152 A
(and)126 1362 A
(the)126 1530 A
(blocks)252 1698 A
(must)168 1992 A
2202(be)S
(returned)336 2328 A
2706(to)S
(the)126 2832 A
(free)168 3000 A
(block)210 3210 A
(pool.)210 3462 A
4770 V
(25403)210 648 A
1068(*)S
4860 V
(25404)210 648 A
1068(*)S
(The)126 1152 A
(entry)210 1320 A
(points)252 1572 A
(into)168 1866 A
(this)168 2076 A
(file)168 2286 A
(are)126 2496 A
4950 V
(25405)210 648 A
1068(*)S
(do_link:)336 1236 A
(perform)294 1698 A
(the)126 2034 A
(LINK)168 2202 A
(system)252 2412 A
(call)168 2706 A
5040 V
(25406)210 648 A
1068(*)S
(do_unlink:)420 1236 A
(perform)294 1698 A
(the)126 2034 A
(UNLINK)252 2202 A
(and)126 2496 A
(RMDIR)210 2664 A
(system)252 2916 A
(calls)210 3210 A
5130 V
(25407)210 648 A
1068(*)S
(do_rename:)420 1236 A
(perform)294 1698 A
(the)126 2034 A
(RENAME)252 2202 A
(system)252 2496 A
(call)168 2790 A
5220 V
(25408)210 648 A
1068(*)S
(truncate:)378 1236 A
(release)294 1698 A
(all)126 2034 A
(the)126 2202 A
(blocks)252 2370 A
(associated)420 2664 A
(with)168 3126 A
3336(an)S
(inode)210 3462 A
5310 V
(25409)210 648 A
1068(*/)S
5400 V
(25410)210 648 A
5490 V
(25411)210 648 A
(#include)336 1026 A
("fs.h")252 1404 A
5580 V
(25412)210 648 A
(#include)336 1026 A
(<sys/stat.h>)504 1404 A
5670 V
(25413)210 648 A
(#include)336 1026 A
(<string.h>)420 1404 A
5760 V
(25414)210 648 A
(#include)336 1026 A
(<minix/callnr.h>)672 1404 A
5850 V
(25415)210 648 A
(#include)336 1026 A
("buf.h")294 1404 A
5940 V
(25416)210 648 A
(#include)336 1026 A
("file.h")336 1404 A
6030 V
(25417)210 648 A
(#include)336 1026 A
("fproc.h")378 1404 A
6120 V
(25418)210 648 A
(#include)336 1026 A
("inode.h")378 1404 A
6210 V
(25419)210 648 A
(#include)336 1026 A
("param.h")378 1404 A
8418 V
EP
%%Page: 350 350
BP
/slant 0 def
/height 0 def
630 V
12 B
(350)180 648 A
11 R
2160(File:)S
(src/fs/link.c)522 2393 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(25420)210 648 A
(#include)336 1026 A
("super.h")378 1404 A
990 V
(25421)210 648 A
1080 V
(25422)210 648 A
(#define)294 1026 A
(SAME)168 1362 A
(1000)168 1572 A
1170 V
(25423)210 648 A
1260 V
(25424)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(remove_dir,)462 2034 A
((struct)294 2538 A
(inode)210 2874 A
(*rldirp,)336 3126 A
(struct)252 3504 A
(inode)210 3798 A
(*rip,)210 4050 A
1350 V
(25425)210 648 A
(char)168 2034 A
(dir_name[NAME_MAX]))798 2244 A
4050();)S
1440 V
(25426)210 648 A
1530 V
(25427)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(unlink_file,)504 2034 A
((struct)294 2580 A
(inode)210 2916 A
(*dirp,)252 3168 A
(struct)252 3462 A
(inode)210 3756 A
(*rip,)210 4008 A
1620 V
(25428)210 648 A
(char)168 2034 A
(file_name[NAME_MAX]))840 2244 A
4050();)S
1710 V
(25429)210 648 A
1800 V
(25430)210 648 A
1890 V
(25431)210 648 A
(/*===========================================================================*)3276 1026 A
1980 V
(25432)210 648 A
1068(*)S
(do_link)294 2370 A
4260(*)S
2070 V
(25433)210 648 A
(*===========================================================================*/)3276 1068 A
2160 V
(25434)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(do_link())378 1488 A
2250 V
(25435)210 648 A
1026({)S
2340 V
(25436)210 648 A
1026(/*)S
(Perform)294 1152 A
(the)126 1488 A
(link(name1,)462 1656 A
(name2))252 2160 A
(system)252 2454 A
(call.)210 2748 A
3000(*/)S
2430 V
(25437)210 648 A
2520 V
(25438)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*ip,)168 2034 A
(*rip;)210 2244 A
2610 V
(25439)210 648 A
(register)336 1110 A
(int)126 1488 A
1656(r;)S
2700 V
(25440)210 648 A
(char)168 1110 A
(string[NAME_MAX];)714 1320 A
2790 V
(25441)210 648 A
(struct)252 1110 A
(inode)210 1404 A
(*new_ip;)336 1656 A
2880 V
(25442)210 648 A
2970 V
(25443)210 648 A
1110(/*)S
(See)126 1236 A
1404(if)S
('name')252 1530 A
((file)210 1824 A
2076(to)S
2202(be)S
(linked))294 2328 A
(exists.)294 2664 A
3000(*/)S
3060 V
(25444)210 648 A
1110(if)S
((fetch_name(name1,)756 1236 A
(name1_length,)546 2034 A
(M1))126 2622 A
2790(!=)S
(OK))126 2916 A
(return(err_code);)714 3084 A
3150 V
(25445)210 648 A
1110(if)S
1236(()S
((rip)168 1320 A
1530(=)S
(eat_path(user_path)))840 1614 A
2496(==)S
(NIL_INODE))420 2622 A
(return(err_code);)714 3084 A
3240 V
(25446)210 648 A
3330 V
(25447)210 648 A
1110(/*)S
(Check)210 1236 A
1488(to)S
(see)126 1614 A
1782(if)S
(the)126 1908 A
(file)168 2076 A
(has)126 2286 A
(maximum)294 2454 A
(number)252 2790 A
3084(of)S
(links)210 3210 A
(already.)336 3462 A
3840(*/)S
3420 V
(25448)210 648 A
1110(r)S
1194(=)S
(OK;)126 1278 A
3510 V
(25449)210 648 A
1110(if)S
1236(()S
((rip->i_nlinks)588 1320 A
1950(&)S
(BYTE))210 2034 A
2286(>=)S
(LINK_MAX))378 2412 A
2832(r)S
2916(=)S
(EMLINK;)294 3000 A
3600 V
(25450)210 648 A
3690 V
(25451)210 648 A
1110(/*)S
(Only)168 1236 A
(super_user)420 1446 A
(may)126 1908 A
(link)168 2076 A
2286(to)S
(directories.)504 2412 A
2958(*/)S
3780 V
(25452)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
3870 V
(25453)210 648 A
1362(if)S
1488(()S
((rip->i_mode)504 1572 A
2118(&)S
(I_TYPE))294 2202 A
2538(==)S
(I_DIRECTORY)462 2664 A
3168(&&)S
(!super_user))504 3294 A
3840(r)S
3924(=)S
(EPERM;)252 4008 A
3960 V
(25454)210 648 A
4050 V
(25455)210 648 A
1110(/*)S
1236(If)S
(error)210 1362 A
(with)168 1614 A
('name',)294 1824 A
(return)252 2160 A
(the)126 2454 A
(inode.)252 2622 A
2916(*/)S
4140 V
(25456)210 648 A
1110(if)S
1236((r)S
1362(!=)S
(OK))126 1488 A
1656({)S
4230 V
(25457)210 648 A
(put_inode(rip);)630 1362 A
4320 V
(25458)210 648 A
(return(r);)420 1362 A
4410 V
(25459)210 648 A
1110(})S
4500 V
(25460)210 648 A
4590 V
(25461)210 648 A
1110(/*)S
(Does)168 1236 A
(the)126 1446 A
(final)210 1614 A
(directory)378 1866 A
2286(of)S
('name2')294 2412 A
(exist?)252 2748 A
3042(*/)S
4680 V
(25462)210 648 A
1110(if)S
((fetch_name(name2,)756 1236 A
(name2_length,)546 2034 A
(M1))126 2622 A
2790(!=)S
(OK))126 2916 A
3084({)S
4770 V
(25463)210 648 A
(put_inode(rip);)630 1362 A
4860 V
(25464)210 648 A
(return(err_code);)714 1362 A
4950 V
(25465)210 648 A
1110(})S
5040 V
(25466)210 648 A
1110(if)S
1236(()S
((ip)126 1320 A
1488(=)S
(last_dir(user_path,)798 1572 A
(string)))336 2412 A
2790(==)S
(NIL_INODE))420 2916 A
3378(r)S
3462(=)S
(err_code;)378 3546 A
5130 V
(25467)210 648 A
5220 V
(25468)210 648 A
1110(/*)S
1236(If)S
('name2')294 1362 A
(exists)252 1698 A
1992(in)S
(full)168 2118 A
((even)210 2328 A
2580(if)S
2706(no)S
(space))252 2832 A
(set)126 3126 A
('r')126 3294 A
3462(to)S
(error.)252 3588 A
3882(*/)S
5310 V
(25469)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1656({)S
5400 V
(25470)210 648 A
1362(if)S
1488(()S
((new_ip)294 1572 A
1908(=)S
(advance(ip,)462 1992 A
(string)))336 2496 A
2874(==)S
(NIL_INODE))420 3000 A
3462({)S
5490 V
(25471)210 648 A
1698(r)S
1782(=)S
(err_code;)378 1866 A
5580 V
(25472)210 648 A
1698(if)S
1824((r)S
1950(==)S
(ENOENT))294 2076 A
2412(r)S
2496(=)S
(OK;)126 2580 A
5670 V
(25473)210 648 A
1362(})S
(else)168 1446 A
1656({)S
5760 V
(25474)210 648 A
(put_inode(new_ip);)756 1698 A
5850 V
(25475)210 648 A
1698(r)S
1782(=)S
(EEXIST;)294 1866 A
5940 V
(25476)210 648 A
1362(})S
6030 V
(25477)210 648 A
1110(})S
6120 V
(25478)210 648 A
6210 V
(25479)210 648 A
1110(/*)S
(Check)210 1236 A
(for)126 1488 A
(links)210 1656 A
(across)252 1908 A
(devices.)336 2202 A
2580(*/)S
8418 V
EP
%%Page: 351 351
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2160(File:)S
(src/fs/link.c)522 2393 A
12 B
(351)180 4248 A
900 V
7 LST
(25480)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
990 V
(25481)210 648 A
1362(if)S
((rip->i_dev)462 1488 A
1992(!=)S
(ip->i_dev))420 2118 A
2580(r)S
2664(=)S
(EXDEV;)252 2748 A
1080 V
(25482)210 648 A
1170 V
(25483)210 648 A
1110(/*)S
(Try)126 1236 A
1404(to)S
(link.)210 1530 A
1782(*/)S
1260 V
(25484)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1350 V
(25485)210 648 A
1362(r)S
1446(=)S
(search_dir(ip,)588 1530 A
(string,)294 2160 A
(&rip->i_num,)504 2496 A
(ENTER);)294 3042 A
1440 V
(25486)210 648 A
1530 V
(25487)210 648 A
1110(/*)S
1236(If)S
(success,)336 1362 A
(register)336 1740 A
(the)126 2118 A
(linking.)336 2286 A
2664(*/)S
1620 V
(25488)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1656({)S
1710 V
(25489)210 648 A
(rip->i_nlinks++;)672 1362 A
1800 V
(25490)210 648 A
(rip->i_update)546 1362 A
1950(|=)S
(CTIME;)252 2076 A
1890 V
(25491)210 648 A
(rip->i_dirt)462 1362 A
1866(=)S
(DIRTY;)252 1950 A
1980 V
(25492)210 648 A
1110(})S
2070 V
(25493)210 648 A
2160 V
(25494)210 648 A
1110(/*)S
(Done.)210 1236 A
(Release)294 1530 A
(both)168 1866 A
(inodes.)294 2076 A
2412(*/)S
2250 V
(25495)210 648 A
(put_inode(rip);)630 1110 A
2340 V
(25496)210 648 A
(put_inode(ip);)588 1110 A
2430 V
(25497)210 648 A
(return(r);)420 1110 A
2520 V
(25498)210 648 A
1026(})S
2790 V
(25501)210 648 A
(/*===========================================================================*)3276 1026 A
2880 V
(25502)210 648 A
1068(*)S
(do_unlink)378 2370 A
4260(*)S
2970 V
(25503)210 648 A
(*===========================================================================*/)3276 1068 A
3060 V
(25504)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(do_unlink())462 1488 A
3150 V
(25505)210 648 A
1026({)S
3240 V
(25506)210 648 A
1026(/*)S
(Perform)294 1152 A
(the)126 1488 A
(unlink(name))504 1656 A
2202(or)S
(rmdir(name))462 2328 A
(system)252 2832 A
(call.)210 3126 A
(The)126 3378 A
(code)168 3546 A
(for)126 3756 A
(these)210 3924 A
(two)126 4176 A
3330 V
(25507)210 648 A
1068(*)S
1152(is)S
(almost)252 1278 A
(the)126 1572 A
(same.)210 1740 A
(They)168 2034 A
(differ)252 2244 A
(only)168 2538 A
2748(in)S
(some)168 2874 A
(condition)378 3084 A
(testing.)336 3504 A
(Unlink())336 3924 A
3420 V
(25508)210 648 A
1068(*)S
(may)126 1152 A
1320(be)S
(used)168 1446 A
1656(by)S
(the)126 1782 A
(superuser)378 1950 A
2370(to)S
2496(do)S
(dangerous)378 2622 A
(things;)294 3042 A
(rmdir())294 3378 A
(may)126 3714 A
(not.)168 3882 A
3510 V
(25509)210 648 A
1068(*/)S
3600 V
(25510)210 648 A
3690 V
(25511)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*rip;)210 2034 A
3780 V
(25512)210 648 A
(struct)252 1110 A
(inode)210 1404 A
(*rldirp;)336 1656 A
3870 V
(25513)210 648 A
(int)126 1110 A
1278(r;)S
3960 V
(25514)210 648 A
(char)168 1110 A
(string[NAME_MAX];)714 1320 A
4050 V
(25515)210 648 A
4140 V
(25516)210 648 A
1110(/*)S
(Get)126 1236 A
(the)126 1404 A
(last)168 1572 A
(directory)378 1782 A
2202(in)S
(the)126 2328 A
(path.)210 2496 A
2748(*/)S
4230 V
(25517)210 648 A
1110(if)S
((fetch_name(name,)714 1236 A
(name_length,)504 1992 A
(M3))126 2538 A
2706(!=)S
(OK))126 2832 A
(return(err_code);)714 3000 A
4320 V
(25518)210 648 A
1110(if)S
1236(()S
((rldirp)294 1320 A
1656(=)S
(last_dir(user_path,)798 1740 A
(string)))336 2580 A
2958(==)S
(NIL_INODE))420 3084 A
4410 V
(25519)210 648 A
(return(err_code);)714 1362 A
4500 V
(25520)210 648 A
4590 V
(25521)210 648 A
1110(/*)S
(The)126 1236 A
(last)168 1404 A
(directory)378 1614 A
(exists.)294 2034 A
(Does)168 2412 A
(the)126 2622 A
(file)168 2790 A
(also)168 3000 A
(exist?)252 3210 A
3504(*/)S
4680 V
(25522)210 648 A
1110(r)S
1194(=)S
(OK;)126 1278 A
4770 V
(25523)210 648 A
1110(if)S
1236(()S
((rip)168 1320 A
1530(=)S
(advance(rldirp,)630 1614 A
(string)))336 2286 A
2664(==)S
(NIL_INODE))420 2790 A
3252(r)S
3336(=)S
(err_code;)378 3420 A
4860 V
(25524)210 648 A
4950 V
(25525)210 648 A
1110(/*)S
1236(If)S
(error,)252 1362 A
(return)252 1656 A
(inode.)252 1950 A
2244(*/)S
5040 V
(25526)210 648 A
1110(if)S
1236((r)S
1362(!=)S
(OK))126 1488 A
1656({)S
5130 V
(25527)210 648 A
(put_inode(rldirp);)756 1362 A
5220 V
(25528)210 648 A
(return(r);)420 1362 A
5310 V
(25529)210 648 A
1110(})S
5400 V
(25530)210 648 A
5490 V
(25531)210 648 A
1110(/*)S
1236(Do)S
(not)126 1362 A
(remove)252 1530 A
1824(a)S
(mount)210 1908 A
(point.)252 2160 A
2454(*/)S
5580 V
(25532)210 648 A
1110(if)S
((rip->i_num)462 1236 A
1740(==)S
(ROOT_INODE))462 1866 A
2370({)S
5670 V
(25533)210 648 A
(put_inode(rldirp);)756 1362 A
5760 V
(25534)210 648 A
(put_inode(rip);)630 1362 A
5850 V
(25535)210 648 A
(return(EBUSY);)588 1362 A
5940 V
(25536)210 648 A
1110(})S
6030 V
(25537)210 648 A
6120 V
(25538)210 648 A
1110(/*)S
(Now)126 1236 A
(test)168 1404 A
1614(if)S
(the)126 1740 A
(call)168 1908 A
2118(is)S
(allowed,)336 2244 A
(separately)420 2622 A
(for)126 3084 A
(unlink())336 3252 A
(and)126 3630 A
(rmdir().)336 3798 A
4176(*/)S
6210 V
(25539)210 648 A
1110(if)S
((fs_call)336 1236 A
1614(==)S
(UNLINK))294 1740 A
2076({)S
8418 V
EP
%%Page: 352 352
BP
/slant 0 def
/height 0 def
630 V
12 B
(352)180 648 A
11 R
2160(File:)S
(src/fs/link.c)522 2393 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(25540)210 648 A
1362(/*)S
(Only)168 1488 A
(the)126 1698 A
1866(su)S
(may)126 1992 A
(unlink)252 2160 A
(directories,)504 2454 A
(but)126 3000 A
(the)126 3168 A
3336(su)S
(can)126 3462 A
(unlink)252 3630 A
(any)126 3924 A
(dir.*/)252 4092 A
990 V
(25541)210 648 A
1362(if)S
1488(()S
((rip->i_mode)504 1572 A
2118(&)S
(I_TYPE))294 2202 A
2538(==)S
(I_DIRECTORY)462 2664 A
3168(&&)S
(!super_user))504 3294 A
3840(r)S
3924(=)S
(EPERM;)252 4008 A
1080 V
(25542)210 648 A
1170 V
(25543)210 648 A
1362(/*)S
(Don't)210 1488 A
(unlink)252 1740 A
2034(a)S
(file)168 2118 A
2328(if)S
2454(it)S
2580(is)S
(the)126 2706 A
(root)168 2874 A
3084(of)S
3210(a)S
(mounted)294 3294 A
(file)168 3630 A
(system.)294 3840 A
4176(*/)S
1260 V
(25544)210 648 A
1362(if)S
((rip->i_num)462 1488 A
1992(==)S
(ROOT_INODE))462 2118 A
2622(r)S
2706(=)S
(EBUSY;)252 2790 A
1350 V
(25545)210 648 A
1440 V
(25546)210 648 A
1362(/*)S
(Actually)336 1488 A
(try)126 1866 A
2034(to)S
(unlink)252 2160 A
(the)126 2454 A
(file;)210 2622 A
(fails)210 2874 A
3126(if)S
(parent)252 3252 A
3546(is)S
(mode)168 3672 A
3882(0)S
(etc.)168 3966 A
4176(*/)S
1530 V
(25547)210 648 A
1362(if)S
1488((r)S
1614(==)S
(OK))126 1740 A
1908(r)S
1992(=)S
(unlink_file(rldirp,)798 2076 A
(rip,)168 2916 A
(string);)336 3126 A
1620 V
(25548)210 648 A
1710 V
(25549)210 648 A
1110(})S
(else)168 1194 A
1404({)S
1800 V
(25550)210 648 A
1362(r)S
1446(=)S
(remove_dir(rldirp,)756 1530 A
(rip,)168 2328 A
(string);)336 2538 A
2916(/*)S
(call)168 3042 A
3252(is)S
(RMDIR)210 3378 A
3630(*/)S
1890 V
(25551)210 648 A
1110(})S
1980 V
(25552)210 648 A
2070 V
(25553)210 648 A
1110(/*)S
1236(If)S
(unlink)252 1362 A
(was)126 1656 A
(possible,)378 1824 A
2244(it)S
(has)126 2370 A
(been)168 2538 A
(done,)210 2748 A
(otherwise)378 3000 A
3420(it)S
(has)126 3546 A
(not.)168 3714 A
3924(*/)S
2160 V
(25554)210 648 A
(put_inode(rip);)630 1110 A
2250 V
(25555)210 648 A
(put_inode(rldirp);)756 1110 A
2340 V
(25556)210 648 A
(return(r);)420 1110 A
2430 V
(25557)210 648 A
1026(})S
2700 V
(25560)210 648 A
(/*===========================================================================*)3276 1026 A
2790 V
(25561)210 648 A
1068(*)S
(do_rename)378 2370 A
4260(*)S
2880 V
(25562)210 648 A
(*===========================================================================*/)3276 1068 A
2970 V
(25563)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(do_rename())462 1488 A
3060 V
(25564)210 648 A
1026({)S
3150 V
(25565)210 648 A
1026(/*)S
(Perform)294 1152 A
(the)126 1488 A
(rename(name1,)546 1656 A
(name2))252 2244 A
(system)252 2538 A
(call.)210 2832 A
3084(*/)S
3240 V
(25566)210 648 A
3330 V
(25567)210 648 A
(struct)252 1110 A
(inode)210 1404 A
(*old_dirp,)420 1656 A
(*old_ip;)336 2118 A
2706(/*)S
(ptrs)168 2832 A
3042(to)S
(old)126 3168 A
(dir,)168 3336 A
(file)168 3546 A
(inodes)252 3756 A
4050(*/)S
3420 V
(25568)210 648 A
(struct)252 1110 A
(inode)210 1404 A
(*new_dirp,)420 1656 A
(*new_ip;)336 2118 A
2706(/*)S
(ptrs)168 2832 A
3042(to)S
(new)126 3168 A
(dir,)168 3336 A
(file)168 3546 A
(inodes)252 3756 A
4050(*/)S
3510 V
(25569)210 648 A
(struct)252 1110 A
(inode)210 1404 A
(*new_superdirp,)630 1656 A
(*next_new_superdirp;)840 2328 A
3600 V
(25570)210 648 A
(int)126 1110 A
1278(r)S
1362(=)S
(OK;)126 1446 A
2706(/*)S
(error)210 2832 A
(flag;)210 3084 A
(initially)378 3336 A
3756(no)S
(error)210 3882 A
4134(*/)S
3690 V
(25571)210 648 A
(int)126 1110 A
(odir,)210 1278 A
(ndir;)210 1530 A
2706(/*)S
(TRUE)168 2832 A
(iff)126 3042 A
({old|new})378 3210 A
(file)168 3630 A
3840(is)S
(dir)126 3966 A
4134(*/)S
3780 V
(25572)210 648 A
(int)126 1110 A
(same_pdir;)420 1278 A
2706(/*)S
(TRUE)168 2832 A
(iff)126 3042 A
(parent)252 3210 A
(dirs)168 3504 A
(are)126 3714 A
(the)126 3882 A
(same)168 4050 A
4260(*/)S
3870 V
(25573)210 648 A
(char)168 1110 A
(old_name[NAME_MAX],)798 1320 A
(new_name[NAME_MAX];)798 2160 A
3960 V
(25574)210 648 A
(ino_t)210 1110 A
(numb;)210 1362 A
4050 V
(25575)210 648 A
(int)126 1110 A
(r1;)126 1278 A
4140 V
(25576)210 648 A
4230 V
(25577)210 648 A
1110(/*)S
(See)126 1236 A
1404(if)S
('name1')294 1530 A
((existing)378 1866 A
(file))210 2286 A
(exists.)294 2538 A
(Get)126 2916 A
(dir)126 3084 A
(and)126 3252 A
(file)168 3420 A
(inodes.)294 3630 A
3966(*/)S
4320 V
(25578)210 648 A
1110(if)S
((fetch_name(name1,)756 1236 A
(name1_length,)546 2034 A
(M1))126 2622 A
2790(!=)S
(OK))126 2916 A
(return(err_code);)714 3084 A
4410 V
(25579)210 648 A
1110(if)S
1236(()S
((old_dirp)378 1320 A
1740(=)S
(last_dir(user_path,)798 1824 A
(old_name))==NIL_INODE))924 2664 A
(return(err_code);)714 3630 A
4500 V
(25580)210 648 A
4590 V
(25581)210 648 A
1110(if)S
1236(()S
((old_ip)294 1320 A
1656(=)S
(advance(old_dirp,)714 1740 A
(old_name)))420 2496 A
2958(==)S
(NIL_INODE))420 3084 A
3546(r)S
3630(=)S
(err_code;)378 3714 A
4680 V
(25582)210 648 A
4770 V
(25583)210 648 A
1110(/*)S
(See)126 1236 A
1404(if)S
('name2')294 1530 A
((new)168 1866 A
(name))210 2076 A
(exists.)294 2328 A
(Get)126 2706 A
(dir)126 2874 A
(and)126 3042 A
(file)168 3210 A
(inodes.)294 3420 A
3756(*/)S
4860 V
(25584)210 648 A
1110(if)S
((fetch_name(name2,)756 1236 A
(name2_length,)546 2034 A
(M1))126 2622 A
2790(!=)S
(OK))126 2916 A
3084(r)S
3168(=)S
(err_code;)378 3252 A
4950 V
(25585)210 648 A
1110(if)S
1236(()S
((new_dirp)378 1320 A
1740(=)S
(last_dir(user_path,)798 1824 A
(new_name)))420 2664 A
3126(==)S
(NIL_INODE))420 3252 A
3714(r)S
3798(=)S
(err_code;)378 3882 A
5040 V
(25586)210 648 A
(new_ip)252 1110 A
1404(=)S
(advance(new_dirp,)714 1488 A
(new_name);)420 2244 A
2706(/*)S
(not)126 2832 A
(required)336 3000 A
3378(to)S
(exist)210 3504 A
3756(*/)S
5130 V
(25587)210 648 A
5220 V
(25588)210 648 A
1110(if)S
((old_ip)294 1236 A
1572(!=)S
(NIL_INODE))420 1698 A
5310 V
(25589)210 648 A
(odir)168 1362 A
1572(=)S
(((old_ip->i_mode)672 1656 A
2370(&)S
(I_TYPE))294 2454 A
2790(==)S
(I_DIRECTORY);)546 2916 A
3546(/*)S
(TRUE)168 3672 A
(iff)126 3882 A
(dir)126 4050 A
4218(*/)S
5400 V
(25590)210 648 A
5490 V
(25591)210 648 A
1110(/*)S
1236(If)S
1362(it)S
1488(is)S
(ok,)126 1614 A
(check)210 1782 A
(for)126 2034 A
2202(a)S
(variety)294 2286 A
2622(of)S
(possible)336 2748 A
(errors.)294 3126 A
3462(*/)S
5580 V
(25592)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1656({)S
5670 V
(25593)210 648 A
(same_pdir)378 1362 A
1782(=)S
((old_dirp)378 1866 A
2286(==)S
(new_dirp);)420 2412 A
5760 V
(25594)210 648 A
5850 V
(25595)210 648 A
1362(/*)S
(The)126 1488 A
(old)126 1656 A
(inode)210 1824 A
(must)168 2076 A
(not)126 2286 A
2454(be)S
2580(a)S
(superdirectory)588 2664 A
3294(of)S
(the)126 3420 A
(new)126 3588 A
(last)168 3756 A
(dir.)168 3966 A
4176(*/)S
5940 V
(25596)210 648 A
1362(if)S
((odir)210 1488 A
1740(&&)S
(!same_pdir))462 1866 A
2370({)S
6030 V
(25597)210 648 A
(dup_inode(new_superdirp)966 1698 A
2706(=)S
(new_dirp);)420 2790 A
6120 V
(25598)210 648 A
(while)210 1698 A
((TRUE))252 1950 A
2244({)S
2706(/*)S
(may)126 2832 A
(hang)168 3000 A
3210(in)S
3336(a)S
(file)168 3420 A
(system)252 3630 A
(loop)168 3924 A
4134(*/)S
6210 V
(25599)210 648 A
2034(if)S
((new_superdirp)588 2160 A
2790(==)S
(old_ip))294 2916 A
3252({)S
8418 V
EP
%%Page: 353 353
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2160(File:)S
(src/fs/link.c)522 2393 A
12 B
(353)180 4248 A
900 V
7 LST
(25600)210 648 A
2370(r)S
2454(=)S
(EINVAL;)294 2538 A
990 V
(25601)210 648 A
(break;)252 2370 A
1080 V
(25602)210 648 A
2034(})S
1170 V
(25603)210 648 A
(next_new_superdirp)756 2034 A
2832(=)S
(advance(new_superdirp,)924 2916 A
(dot2);)252 3882 A
1260 V
(25604)210 648 A
(put_inode(new_superdirp);)1050 2034 A
1350 V
(25605)210 648 A
2034(if)S
((next_new_superdirp)798 2160 A
3000(==)S
(new_superdirp))588 3126 A
1440 V
(25606)210 648 A
(break;)252 2370 A
2706(/*)S
(back)168 2832 A
3042(at)S
(system)252 3168 A
(root)168 3462 A
(directory)378 3672 A
4092(*/)S
1530 V
(25607)210 648 A
(new_superdirp)546 2034 A
2622(=)S
(next_new_superdirp;)798 2706 A
1620 V
(25608)210 648 A
2034(if)S
((new_superdirp)588 2160 A
2790(==)S
(NIL_INODE))420 2916 A
3378({)S
1710 V
(25609)210 648 A
2370(/*)S
(Missing)294 2496 A
("..")168 2832 A
(entry.)252 3042 A
(Assume)252 3378 A
(the)126 3672 A
(worst.)252 3840 A
4134(*/)S
1800 V
(25610)210 648 A
2370(r)S
2454(=)S
(EINVAL;)294 2538 A
1890 V
(25611)210 648 A
(break;)252 2370 A
1980 V
(25612)210 648 A
2034(})S
2070 V
(25613)210 648 A
1698(})S
2160 V
(25614)210 648 A
(put_inode(new_superdirp);)1050 1698 A
2250 V
(25615)210 648 A
1362(})S
2340 V
(25616)210 648 A
2430 V
(25617)210 648 A
1362(/*)S
(The)126 1488 A
(old)126 1656 A
1824(or)S
(new)126 1950 A
(name)168 2118 A
(must)168 2328 A
(not)126 2538 A
2706(be)S
2832(.)S
2916(or)S
3042(..)S
3168(*/)S
2520 V
(25618)210 648 A
1362(if)S
((strcmp(old_name,)714 1488 A
(".")==0)294 2244 A
2580(||)S
(strcmp(old_name,)672 2706 A
("..")==0)336 3420 A
3798(||)S
2610 V
(25619)210 648 A
(strcmp(new_name,)672 1530 A
(".")==0)294 2244 A
2580(||)S
(strcmp(new_name,)672 2706 A
("..")==0))378 3420 A
3840(r)S
3924(=)S
(EINVAL;)294 4008 A
2700 V
(25620)210 648 A
2790 V
(25621)210 648 A
1362(/*)S
(Both)168 1488 A
(parent)252 1698 A
(directories)462 1992 A
(must)168 2496 A
2706(be)S
2832(on)S
(the)126 2958 A
(same)168 3126 A
(device.)294 3336 A
3672(*/)S
2880 V
(25622)210 648 A
1362(if)S
((old_dirp->i_dev)672 1488 A
2202(!=)S
(new_dirp->i_dev))672 2328 A
3042(r)S
3126(=)S
(EXDEV;)252 3210 A
2970 V
(25623)210 648 A
3060 V
(25624)210 648 A
1362(/*)S
(Parent)252 1488 A
(dirs)168 1782 A
(must)168 1992 A
2202(be)S
(writable,)378 2328 A
(searchable)420 2748 A
(and)126 3210 A
3378(on)S
3504(a)S
(writable)336 3588 A
(device)252 3966 A
4260(*/)S
3150 V
(25625)210 648 A
1362(if)S
(((r1)168 1488 A
1698(=)S
(forbidden(old_dirp,)798 1782 A
(W_BIT)210 2622 A
2874(|)S
(X_BIT)))294 2958 A
3294(!=)S
3420(OK)S
3546(||)S
3240 V
(25626)210 648 A
((r1)126 1530 A
1698(=)S
(forbidden(new_dirp,)798 1782 A
(W_BIT)210 2622 A
2874(|)S
(X_BIT)))294 2958 A
3294(!=)S
(OK))126 3420 A
3588(r)S
3672(=)S
(r1;)126 3756 A
3330 V
(25627)210 648 A
3420 V
(25628)210 648 A
1362(/*)S
(Some)168 1488 A
(tests)210 1698 A
(apply)210 1950 A
(only)168 2202 A
2412(if)S
(the)126 2538 A
(new)126 2706 A
(path)168 2874 A
(exists.)294 3084 A
3420(*/)S
3510 V
(25629)210 648 A
1362(if)S
((new_ip)294 1488 A
1824(==)S
(NIL_INODE))420 1950 A
2412({)S
3600 V
(25630)210 648 A
1698(/*)S
(don't)210 1824 A
(rename)252 2076 A
2370(a)S
(file)168 2454 A
(with)168 2664 A
2874(a)S
(file)168 2958 A
(system)252 3168 A
(mounted)294 3462 A
3798(on)S
(it.)126 3924 A
4092(*/)S
3690 V
(25631)210 648 A
1698(if)S
((old_ip->i_dev)588 1824 A
2454(!=)S
(old_dirp->i_dev))672 2580 A
3294(r)S
3378(=)S
(EXDEV;)252 3462 A
3780 V
(25632)210 648 A
1698(if)S
((odir)210 1824 A
2076(&&)S
((new_dirp->i_nlinks)798 2202 A
3042(&)S
(BYTE))210 3126 A
3378(>=)S
(LINK_MAX)336 3504 A
3882(&&)S
3870 V
(25633)210 648 A
(!same_pdir)420 1866 A
2328(&&)S
2454(r)S
2538(==)S
(OK))126 2664 A
2832(r)S
2916(=)S
(EMLINK;)294 3000 A
3960 V
(25634)210 648 A
1362(})S
(else)168 1446 A
1656({)S
4050 V
(25635)210 648 A
1698(if)S
((old_ip)294 1824 A
2160(==)S
(new_ip))294 2286 A
2622(r)S
2706(=)S
(SAME;)210 2790 A
3042(/*)S
(old=new)294 3168 A
3504(*/)S
4140 V
(25636)210 648 A
4230 V
(25637)210 648 A
1698(/*)S
(has)126 1824 A
(the)126 1992 A
(old)126 2160 A
(file)168 2328 A
2538(or)S
(new)126 2664 A
(file)168 2832 A
3042(a)S
(file)168 3126 A
(system)252 3336 A
(mounted)294 3630 A
3966(on)S
(it?)126 4092 A
4260(*/)S
4320 V
(25638)210 648 A
1698(if)S
((old_ip->i_dev)588 1824 A
2454(!=)S
(new_ip->i_dev))588 2580 A
3210(r)S
3294(=)S
(EXDEV;)252 3378 A
4410 V
(25639)210 648 A
4500 V
(25640)210 648 A
(ndir)168 1698 A
1908(=)S
(((new_ip->i_mode)672 1992 A
2706(&)S
(I_TYPE))294 2790 A
3126(==)S
(I_DIRECTORY);)546 3252 A
3840(/*)S
(dir)126 3966 A
4134(?)S
4218(*/)S
4590 V
(25641)210 648 A
1698(if)S
((odir)210 1824 A
2076(==)S
(TRUE)168 2202 A
2412(&&)S
(ndir)168 2538 A
2748(==)S
(FALSE))252 2874 A
3168(r)S
3252(=)S
(ENOTDIR;)336 3336 A
4680 V
(25642)210 648 A
1698(if)S
((odir)210 1824 A
2076(==)S
(FALSE)210 2202 A
2454(&&)S
(ndir)168 2580 A
2790(==)S
(TRUE))210 2916 A
3168(r)S
3252(=)S
(EISDIR;)294 3336 A
4770 V
(25643)210 648 A
1362(})S
4860 V
(25644)210 648 A
1110(})S
4950 V
(25645)210 648 A
5040 V
(25646)210 648 A
1110(/*)S
1236(If)S
1362(a)S
(process)294 1446 A
(has)126 1782 A
(another)294 1950 A
(root)168 2286 A
(directory)378 2496 A
(than)168 2916 A
(the)126 3126 A
(system)252 3294 A
(root,)210 3588 A
3840(we)S
(might)210 3966 A
5130 V
(25647)210 648 A
1152(*)S
("accidently")504 1236 A
1782(be)S
(moving)252 1908 A
(it's)168 2202 A
(working)294 2412 A
(directory)378 2748 A
3168(to)S
3294(a)S
(place)210 3378 A
(where)210 3630 A
(it's)168 3882 A
5220 V
(25648)210 648 A
1152(*)S
(root)168 1236 A
(directory)378 1446 A
(isn't)210 1866 A
2118(a)S
(super)210 2202 A
(directory)378 2454 A
2874(of)S
3000(it)S
(anymore.)336 3126 A
(This)168 3504 A
(can)126 3714 A
(make)168 3882 A
5310 V
(25649)210 648 A
1152(*)S
(the)126 1236 A
(function)336 1404 A
(chroot)252 1782 A
(useless.)336 2076 A
2454(If)S
(chroot)252 2580 A
(will)168 2874 A
3084(be)S
(used)168 3210 A
(often)210 3420 A
3672(we)S
(should)252 3798 A
5400 V
(25650)210 648 A
1152(*)S
(probably)336 1236 A
(check)210 1614 A
(for)126 1866 A
2034(it)S
(here.)210 2160 A
5490 V
(25651)210 648 A
1152(*/)S
5580 V
(25652)210 648 A
5670 V
(25653)210 648 A
1110(/*)S
(The)126 1236 A
(rename)252 1404 A
(will)168 1698 A
(probably)336 1908 A
(work.)210 2286 A
(Only)168 2538 A
(two)126 2748 A
(things)252 2916 A
(can)126 3210 A
3378(go)S
(wrong)210 3504 A
(now:)168 3756 A
5760 V
(25654)210 648 A
1152(*)S
1236(1.)S
(being)210 1362 A
(unable)252 1614 A
1908(to)S
(remove)252 2034 A
(the)126 2328 A
(new)126 2496 A
(file.)210 2664 A
((when)210 2916 A
(new)126 3168 A
(file)168 3336 A
(already)294 3546 A
(exists))294 3882 A
5850 V
(25655)210 648 A
1152(*)S
1236(2.)S
(being)210 1362 A
(unable)252 1614 A
1908(to)S
(make)168 2034 A
(the)126 2244 A
(new)126 2412 A
(directory)378 2580 A
(entry.)252 3000 A
((new)168 3294 A
(file)168 3504 A
(doesn't)294 3714 A
(exists))294 4050 A
5940 V
(25656)210 648 A
1152(*)S
([directory)420 1404 A
(has)126 1866 A
2034(to)S
(grow)168 2160 A
2370(by)S
(one)126 2496 A
(block)210 2664 A
(and)126 2916 A
(cannot)252 3084 A
(because)294 3378 A
(the)126 3714 A
(disk)168 3882 A
6030 V
(25657)210 648 A
1152(*)S
1446(is)S
(completely)420 1572 A
(full].)252 2034 A
6120 V
(25658)210 648 A
1152(*/)S
6210 V
(25659)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1656({)S
8418 V
EP
%%Page: 354 354
BP
/slant 0 def
/height 0 def
630 V
12 B
(354)180 648 A
11 R
2160(File:)S
(src/fs/link.c)522 2393 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(25660)210 648 A
1362(if)S
((new_ip)294 1488 A
1824(!=)S
(NIL_INODE))420 1950 A
2412({)S
990 V
(25661)210 648 A
1782(/*)S
(There)210 1908 A
2160(is)S
(already)294 2286 A
2622(an)S
(entry)210 2748 A
(for)126 3000 A
('new'.)252 3168 A
(Try)126 3462 A
3630(to)S
(remove)252 3756 A
(it.)126 4050 A
4218(*/)S
1080 V
(25662)210 648 A
1698(if)S
((odir))252 1824 A
1170 V
(25663)210 648 A
2034(r)S
2118(=)S
(remove_dir(new_dirp,)840 2202 A
(new_ip,)294 3084 A
(new_name);)420 3420 A
1260 V
(25664)210 648 A
(else)168 1698 A
1350 V
(25665)210 648 A
2034(r)S
2118(=)S
(unlink_file(new_dirp,)882 2202 A
(new_ip,)294 3126 A
(new_name);)420 3462 A
1440 V
(25666)210 648 A
1362(})S
1530 V
(25667)210 648 A
1362(/*)S
1488(if)S
1614(r)S
1698(is)S
(OK,)126 1824 A
(the)126 1992 A
(rename)252 2160 A
(will)168 2454 A
(succeed,)336 2664 A
(while)210 3042 A
(there)210 3294 A
3546(is)S
(now)126 3672 A
3840(an)S
1620 V
(25668)210 648 A
1404(*)S
(unused)252 1488 A
(entry)210 1782 A
2034(in)S
(the)126 2160 A
(new)126 2328 A
(parent)252 2496 A
(directory.)420 2790 A
1710 V
(25669)210 648 A
1404(*/)S
1800 V
(25670)210 648 A
1110(})S
1890 V
(25671)210 648 A
1980 V
(25672)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1656({)S
2070 V
(25673)210 648 A
1362(/*)S
1488(If)S
(the)126 1614 A
(new)126 1782 A
(name)168 1950 A
(will)168 2160 A
2370(be)S
2496(in)S
(the)126 2622 A
(same)168 2790 A
(parent)252 3000 A
(directory)378 3294 A
3714(as)S
(the)126 3840 A
(old)126 4008 A
(one,)168 4176 A
2160 V
(25674)210 648 A
1404(*)S
(first)210 1488 A
(remove)252 1740 A
(the)126 2034 A
(old)126 2202 A
(name)168 2370 A
2580(to)S
(free)168 2706 A
2916(an)S
(entry)210 3042 A
(for)126 3294 A
(the)126 3462 A
(new)126 3630 A
(name,)210 3798 A
2250 V
(25675)210 648 A
1404(*)S
(otherwise)378 1488 A
(first)210 1908 A
(try)126 2160 A
2328(to)S
(create)252 2454 A
(the)126 2748 A
(new)126 2916 A
(name)168 3084 A
(entry)210 3294 A
3546(to)S
(make)168 3672 A
(sure)168 3882 A
2340 V
(25676)210 648 A
1404(*)S
(the)126 1488 A
(rename)252 1656 A
(will)168 1950 A
(succeed.)336 2160 A
2430 V
(25677)210 648 A
1404(*/)S
2520 V
(25678)210 648 A
(numb)168 1362 A
1572(=)S
(old_ip->i_num;)588 1656 A
2706(/*)S
(inode)210 2832 A
(number)252 3084 A
3378(of)S
(old)126 3504 A
(file)168 3672 A
3882(*/)S
2610 V
(25679)210 648 A
2700 V
(25680)210 648 A
1362(if)S
((same_pdir))462 1488 A
1992({)S
2790 V
(25681)210 648 A
1698(r)S
1782(=)S
(search_dir(old_dirp,)840 1866 A
(old_name,)378 2748 A
((ino_t)252 3168 A
3462(*))S
3588(0,)S
(DELETE);)336 3714 A
2880 V
(25682)210 648 A
3042(/*)S
(shouldn't)378 3168 A
3588(go)S
(wrong.)252 3714 A
4008(*/)S
2970 V
(25683)210 648 A
1698(if)S
((r==OK))294 1824 A
((void))252 2160 A
(search_dir(old_dirp,)840 2454 A
(new_name,)378 3336 A
(&numb,)252 3756 A
(ENTER);)294 4050 A
3060 V
(25684)210 648 A
1362(})S
(else)168 1446 A
1656({)S
3150 V
(25685)210 648 A
1698(r)S
1782(=)S
(search_dir(new_dirp,)840 1866 A
(new_name,)378 2748 A
(&numb,)252 3168 A
(ENTER);)294 3462 A
3240 V
(25686)210 648 A
1698(if)S
1824((r)S
1950(==)S
(OK))126 2076 A
3330 V
(25687)210 648 A
((void))252 1866 A
(search_dir(old_dirp,)840 2160 A
(old_name,)378 3042 A
((ino_t)252 3462 A
3756(*))S
3882(0,)S
(DELETE);)336 4008 A
3420 V
(25688)210 648 A
1362(})S
3510 V
(25689)210 648 A
1110(})S
3600 V
(25690)210 648 A
1110(/*)S
1236(If)S
1362(r)S
1446(is)S
(OK,)126 1572 A
(the)126 1740 A
(ctime)210 1908 A
(and)126 2160 A
(mtime)210 2328 A
2580(of)S
(old_dirp)336 2706 A
(and)126 3084 A
(new_dirp)336 3252 A
(have)168 3630 A
(been)168 3840 A
(marked)252 4050 A
3690 V
(25691)210 648 A
1152(*)S
(for)126 1236 A
(update)252 1404 A
1698(in)S
(search_dir.)462 1824 A
3780 V
(25692)210 648 A
1152(*/)S
3870 V
(25693)210 648 A
3960 V
(25694)210 648 A
1110(if)S
1236((r)S
1362(==)S
1488(OK)S
1614(&&)S
(odir)168 1740 A
1950(&&)S
(!same_pdir))462 2076 A
2580({)S
4050 V
(25695)210 648 A
1362(/*)S
(Update)252 1488 A
(the)126 1782 A
1950(..)S
(entry)210 2076 A
2328(in)S
(the)126 2454 A
(directory)378 2622 A
((still)252 3042 A
(points)252 3336 A
3630(to)S
(old_dirp).)420 3756 A
4218(*/)S
4140 V
(25696)210 648 A
(numb)168 1362 A
1572(=)S
(new_dirp->i_num;)672 1656 A
4230 V
(25697)210 648 A
((void))252 1362 A
(unlink_file(old_ip,)798 1656 A
(NIL_INODE,)420 2496 A
(dot2);)252 2958 A
4320 V
(25698)210 648 A
1362(if)S
((search_dir(old_ip,)798 1488 A
(dot2,)210 2328 A
(&numb,)252 2580 A
(ENTER))252 2874 A
3168(==)S
(OK))126 3294 A
3462({)S
4410 V
(25699)210 648 A
1698(/*)S
(New)126 1824 A
(link)168 1992 A
(created.)336 2202 A
2580(*/)S
4500 V
(25700)210 648 A
(new_dirp->i_nlinks++;)882 1698 A
4590 V
(25701)210 648 A
(new_dirp->i_dirt)672 1698 A
2412(=)S
(DIRTY;)252 2496 A
4680 V
(25702)210 648 A
1362(})S
4770 V
(25703)210 648 A
1110(})S
4860 V
(25704)210 648 A
4950 V
(25705)210 648 A
1110(/*)S
(Release)294 1236 A
(the)126 1572 A
(inodes.)294 1740 A
2076(*/)S
5040 V
(25706)210 648 A
(put_inode(old_dirp);)840 1110 A
5130 V
(25707)210 648 A
(put_inode(old_ip);)756 1110 A
5220 V
(25708)210 648 A
(put_inode(new_dirp);)840 1110 A
5310 V
(25709)210 648 A
(put_inode(new_ip);)756 1110 A
5400 V
(25710)210 648 A
(return(r)336 1110 A
1488(==)S
(SAME)168 1614 A
1824(?)S
1908(OK)S
2034(:)S
(r);)126 2118 A
5490 V
(25711)210 648 A
1026(})S
5760 V
(25714)210 648 A
(/*===========================================================================*)3276 1026 A
5850 V
(25715)210 648 A
1068(*)S
(truncate)336 2370 A
4260(*)S
5940 V
(25716)210 648 A
(*===========================================================================*/)3276 1068 A
6030 V
(25717)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(truncate(rip))546 1530 A
6120 V
(25718)210 648 A
(register)336 1026 A
(struct)252 1404 A
(inode)210 1698 A
(*rip;)210 1950 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(inode)210 2958 A
3210(to)S
3336(be)S
(truncated)378 3462 A
3882(*/)S
6210 V
(25719)210 648 A
1026({)S
8418 V
EP
%%Page: 355 355
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2160(File:)S
(src/fs/link.c)522 2393 A
12 B
(355)180 4248 A
900 V
7 LST
(25720)210 648 A
1026(/*)S
(Remove)252 1152 A
(all)126 1446 A
(the)126 1614 A
(zones)210 1782 A
(from)168 2034 A
(the)126 2244 A
(inode)210 2412 A
('rip')210 2664 A
(and)126 2916 A
(mark)168 3084 A
3294(it)S
(dirty.)252 3420 A
3714(*/)S
990 V
(25721)210 648 A
1080 V
(25722)210 648 A
(register)336 1110 A
(block_t)294 1488 A
1824(b;)S
1170 V
(25723)210 648 A
(zone_t)252 1110 A
1404(z,)S
(zone_size,)420 1530 A
(z1;)126 1992 A
1260 V
(25724)210 648 A
(off_t)210 1110 A
(position;)378 1362 A
1350 V
(25725)210 648 A
(int)126 1110 A
1278(i,)S
(scale,)252 1404 A
(file_type,)420 1698 A
(waspipe,)336 2160 A
(single,)294 2538 A
(nr_indirects;)546 2874 A
1440 V
(25726)210 648 A
(struct)252 1110 A
(buf)126 1404 A
(*bp;)168 1572 A
1530 V
(25727)210 648 A
(dev_t)210 1110 A
(dev;)168 1362 A
1620 V
(25728)210 648 A
1710 V
(25729)210 648 A
(file_type)378 1110 A
1530(=)S
(rip->i_mode)462 1614 A
2118(&)S
(I_TYPE;)294 2202 A
2706(/*)S
(check)210 2832 A
3084(to)S
(see)126 3210 A
3378(if)S
(file)168 3504 A
3714(is)S
(special)294 3840 A
4176(*/)S
1800 V
(25730)210 648 A
1110(if)S
((file_type)420 1236 A
1698(==)S
(I_CHAR_SPECIAL)588 1824 A
2454(||)S
(file_type)378 2580 A
3000(==)S
(I_BLOCK_SPECIAL))672 3126 A
(return;)294 3840 A
1890 V
(25731)210 648 A
(dev)126 1110 A
1278(=)S
(rip->i_dev;)462 1362 A
2370(/*)S
(device)252 2496 A
2790(on)S
(which)210 2916 A
(inode)210 3168 A
(resides)294 3420 A
3756(*/)S
1980 V
(25732)210 648 A
(scale)210 1110 A
1362(=)S
(rip->i_sp->s_log_zone_size;)1134 1446 A
2070 V
(25733)210 648 A
(zone_size)378 1110 A
1530(=)S
((zone_t))336 1614 A
(BLOCK_SIZE)420 1992 A
2454(<<)S
(scale;)252 2580 A
2160 V
(25734)210 648 A
(nr_indirects)504 1110 A
1656(=)S
(rip->i_nindirs;)630 1740 A
2250 V
(25735)210 648 A
2340 V
(25736)210 648 A
1110(/*)S
(Pipes)210 1236 A
(can)126 1488 A
(shrink,)294 1656 A
1992(so)S
(adjust)252 2118 A
(size)168 2412 A
2622(to)S
(make)168 2748 A
(sure)168 2958 A
(all)126 3168 A
(zones)210 3336 A
(are)126 3588 A
(removed.)336 3756 A
4134(*/)S
2430 V
(25737)210 648 A
(waspipe)294 1110 A
1446(=)S
(rip->i_pipe)462 1530 A
2034(==)S
(I_PIPE;)294 2160 A
2706(/*)S
(TRUE)168 2832 A
3042(is)S
(this)168 3168 A
(was)126 3378 A
3546(a)S
(pipe)168 3630 A
3840(*/)S
2520 V
(25738)210 648 A
1110(if)S
((waspipe))378 1236 A
(rip->i_size)462 1656 A
2160(=)S
(PIPE_SIZE;)420 2244 A
2610 V
(25739)210 648 A
2700 V
(25740)210 648 A
1110(/*)S
(Step)168 1236 A
(through)294 1446 A
(the)126 1782 A
(file)168 1950 A
2160(a)S
(zone)168 2244 A
2454(at)S
2580(a)S
(time,)210 2664 A
(finding)294 2916 A
(and)126 3252 A
(freeing)294 3420 A
(the)126 3756 A
(zones.)252 3924 A
4218(*/)S
2790 V
(25741)210 648 A
(for)126 1110 A
((position)378 1278 A
1698(=)S
1782(0;)S
(position)336 1908 A
2286(<)S
(rip->i_size;)504 2370 A
(position)336 2916 A
3294(+=)S
(zone_size))420 3420 A
3882({)S
2880 V
(25742)210 648 A
1362(if)S
1488(()S
1572((b)S
1698(=)S
(read_map(rip,)546 1782 A
(position)))420 2370 A
2832(!=)S
(NO_BLOCK))378 2958 A
3378({)S
2970 V
(25743)210 648 A
1698(z)S
1782(=)S
((zone_t))336 1866 A
2244(b)S
2328(>>)S
(scale;)252 2454 A
3060 V
(25744)210 648 A
(free_zone(dev,)588 1698 A
(z);)126 2328 A
3150 V
(25745)210 648 A
1362(})S
3240 V
(25746)210 648 A
1110(})S
3330 V
(25747)210 648 A
3420 V
(25748)210 648 A
1110(/*)S
(All)126 1236 A
(the)126 1404 A
(data)168 1572 A
(zones)210 1782 A
(have)168 2034 A
(been)168 2244 A
(freed.)252 2454 A
(Now)126 2790 A
(free)168 2958 A
(the)126 3168 A
(indirect)336 3336 A
(zones.)252 3714 A
4008(*/)S
3510 V
(25749)210 648 A
(rip->i_dirt)462 1110 A
1614(=)S
(DIRTY;)252 1698 A
3600 V
(25750)210 648 A
1110(if)S
((waspipe))378 1236 A
1656({)S
3690 V
(25751)210 648 A
(wipe_inode(rip);)672 1362 A
2370(/*)S
(clear)210 2496 A
(out)126 2748 A
(inode)210 2916 A
(for)126 3168 A
(pipes)210 3336 A
3588(*/)S
3780 V
(25752)210 648 A
(return;)294 1362 A
2370(/*)S
(indirect)336 2496 A
(slots)210 2874 A
(contain)294 3126 A
(file)168 3462 A
(positions)378 3672 A
4092(*/)S
3870 V
(25753)210 648 A
1110(})S
3960 V
(25754)210 648 A
(single)252 1110 A
1404(=)S
(rip->i_ndzones;)630 1488 A
4050 V
(25755)210 648 A
(free_zone(dev,)588 1110 A
(rip->i_zone[single]);)882 1740 A
2706(/*)S
(single)252 2832 A
(indirect)336 3126 A
(zone)168 3504 A
3714(*/)S
4140 V
(25756)210 648 A
1110(if)S
1236(()S
1320((z)S
1446(=)S
(rip->i_zone[single+1]))924 1530 A
2496(!=)S
(NO_ZONE))336 2622 A
3000({)S
4230 V
(25757)210 648 A
1362(/*)S
(Free)168 1488 A
(all)126 1698 A
(the)126 1866 A
(single)252 2034 A
(indirect)336 2328 A
(zones)210 2706 A
(pointed)294 2958 A
3294(to)S
3420(by)S
(the)126 3546 A
(double.)294 3714 A
4050(*/)S
4320 V
(25758)210 648 A
1362(b)S
1446(=)S
((block_t))378 1530 A
1950(z)S
2034(<<)S
(scale;)252 2160 A
4410 V
(25759)210 648 A
1362(bp)S
1488(=)S
(get_block(dev,)588 1572 A
2202(b,)S
(NORMAL);)336 2328 A
2706(/*)S
(get)126 2832 A
(double)252 3000 A
(indirect)336 3294 A
(zone)168 3672 A
3882(*/)S
4500 V
(25760)210 648 A
(for)126 1362 A
1530((i)S
1656(=)S
1740(0;)S
1866(i)S
1950(<)S
(nr_indirects;)546 2034 A
(i++))168 2622 A
2832({)S
4590 V
(25761)210 648 A
1698(z1)S
1824(=)S
(rd_indir(bp,)504 1908 A
(i);)126 2454 A
4680 V
(25762)210 648 A
(free_zone(dev,)588 1698 A
(z1);)168 2328 A
4770 V
(25763)210 648 A
1362(})S
4860 V
(25764)210 648 A
4950 V
(25765)210 648 A
1362(/*)S
(Now)126 1488 A
(free)168 1656 A
(the)126 1866 A
(double)252 2034 A
(indirect)336 2328 A
(zone)168 2706 A
(itself.)294 2916 A
3252(*/)S
5040 V
(25766)210 648 A
(put_block(bp,)546 1362 A
(INDIRECT_BLOCK);)672 1950 A
5130 V
(25767)210 648 A
(free_zone(dev,)588 1362 A
(z);)126 1992 A
5220 V
(25768)210 648 A
1110(})S
5310 V
(25769)210 648 A
5400 V
(25770)210 648 A
1110(/*)S
(Leave)210 1236 A
(zone)168 1488 A
(numbers)294 1698 A
(for)126 2034 A
(de(1))210 2202 A
2454(to)S
(recover)294 2580 A
(file)168 2916 A
(after)210 3126 A
3378(an)S
(unlink(2).)420 3504 A
4008(*/)S
5490 V
(25771)210 648 A
1026(})S
5760 V
(25774)210 648 A
(/*===========================================================================*)3276 1026 A
5850 V
(25775)210 648 A
1068(*)S
(remove_dir)420 2370 A
4260(*)S
5940 V
(25776)210 648 A
(*===========================================================================*/)3276 1068 A
6030 V
(25777)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(remove_dir(rldirp,)756 1530 A
(rip,)168 2328 A
(dir_name))378 2538 A
6120 V
(25778)210 648 A
(struct)252 1026 A
(inode)210 1320 A
(*rldirp;)336 1572 A
2706(/*)S
(parent)252 2832 A
(directory)378 3126 A
3546(*/)S
6210 V
(25779)210 648 A
(struct)252 1026 A
(inode)210 1320 A
(*rip;)210 1572 A
2706(/*)S
(directory)378 2832 A
3252(to)S
3378(be)S
(removed)294 3504 A
3840(*/)S
8418 V
EP
%%Page: 356 356
BP
/slant 0 def
/height 0 def
630 V
12 B
(356)180 648 A
11 R
2160(File:)S
(src/fs/link.c)522 2393 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(25780)210 648 A
(char)168 1026 A
(dir_name[NAME_MAX];)798 1236 A
2706(/*)S
(name)168 2832 A
3042(of)S
(directory)378 3168 A
3588(to)S
3714(be)S
(removed)294 3840 A
4176(*/)S
990 V
(25781)210 648 A
1026({)S
1080 V
(25782)210 648 A
1110(/*)S
1236(A)S
(directory)378 1320 A
(file)168 1740 A
(has)126 1950 A
2118(to)S
2244(be)S
(removed.)336 2370 A
(Five)168 2748 A
(conditions)420 2958 A
(have)168 3420 A
3630(to)S
(met:)168 3756 A
1170 V
(25783)210 648 A
1152(*)S
1362(-)S
(The)126 1446 A
(file)168 1614 A
(must)168 1824 A
2034(be)S
2160(a)S
(directory)378 2244 A
1260 V
(25784)210 648 A
1152(*)S
1362(-)S
(The)126 1446 A
(directory)378 1614 A
(must)168 2034 A
2244(be)S
(empty)210 2370 A
((except)294 2622 A
(for)126 2958 A
3126(.)S
(and)126 3210 A
(..))126 3378 A
1350 V
(25785)210 648 A
1152(*)S
1362(-)S
(The)126 1446 A
(final)210 1614 A
(component)378 1866 A
2286(of)S
(the)126 2412 A
(path)168 2580 A
(must)168 2790 A
(not)126 3000 A
3168(be)S
3294(.)S
3378(or)S
3504(..)S
1440 V
(25786)210 648 A
1152(*)S
1362(-)S
(The)126 1446 A
(directory)378 1614 A
(must)168 2034 A
(not)126 2244 A
2412(be)S
(the)126 2538 A
(root)168 2706 A
2916(of)S
3042(a)S
(mounted)294 3126 A
(file)168 3462 A
(system)252 3672 A
1530 V
(25787)210 648 A
1152(*)S
1362(-)S
(The)126 1446 A
(directory)378 1614 A
(must)168 2034 A
(not)126 2244 A
2412(be)S
(anybody's)378 2538 A
(root/working)504 2958 A
(directory)378 3504 A
1620 V
(25788)210 648 A
1152(*/)S
1710 V
(25789)210 648 A
1800 V
(25790)210 648 A
(int)126 1110 A
1278(r;)S
1890 V
(25791)210 648 A
(register)336 1110 A
(struct)252 1488 A
(fproc)210 1782 A
(*rfp;)210 2034 A
1980 V
(25792)210 648 A
2070 V
(25793)210 648 A
1110(/*)S
(search_dir)420 1236 A
(checks)252 1698 A
(that)168 1992 A
(rip)126 2202 A
2370(is)S
2496(a)S
(directory)378 2580 A
(too.)168 3000 A
3210(*/)S
2160 V
(25794)210 648 A
1110(if)S
(((r)126 1236 A
1404(=)S
(search_dir(rip,)630 1488 A
("",)126 2160 A
((ino_t)252 2328 A
2622(*))S
2748(0,)S
(IS_EMPTY)))420 2874 A
3336(!=)S
(OK))126 3462 A
(return)252 3630 A
3924(r;)S
2250 V
(25795)210 648 A
2340 V
(25796)210 648 A
1110(if)S
((strcmp(dir_name,)714 1236 A
("."))168 1992 A
2202(==)S
2328(0)S
2412(||)S
(strcmp(dir_name,)672 2538 A
(".."))210 3252 A
3504(==)S
(0)return(EINVAL);)714 3630 A
2430 V
(25797)210 648 A
1110(if)S
((rip->i_num)462 1236 A
1740(==)S
(ROOT_INODE))462 1866 A
(return(EBUSY);)588 2370 A
3000(/*)S
(can't)210 3126 A
(remove)252 3378 A
('root')252 3672 A
3966(*/)S
2520 V
(25798)210 648 A
2610 V
(25799)210 648 A
(for)126 1110 A
((rfp)168 1278 A
1488(=)S
(&fproc[INIT_PROC_NR)798 1572 A
2412(+)S
(1];)126 2496 A
(rfp)126 2664 A
2832(<)S
(&fproc[NR_PROCS];)714 2916 A
(rfp++))252 3672 A
2700 V
(25800)210 648 A
1362(if)S
((rfp->fp_workdir)672 1488 A
2202(==)S
(rip)126 2328 A
2496(||)S
(rfp->fp_rootdir)630 2622 A
3294(==)S
(rip))168 3420 A
(return(EBUSY);)588 3630 A
2790 V
(25801)210 648 A
2370(/*)S
(can't)210 2496 A
(remove)252 2748 A
(anybody's)378 3042 A
(working)294 3462 A
(dir)126 3798 A
3966(*/)S
2880 V
(25802)210 648 A
2970 V
(25803)210 648 A
1110(/*)S
(Actually)336 1236 A
(try)126 1614 A
1782(to)S
(unlink)252 1908 A
(the)126 2202 A
(file;)210 2370 A
(fails)210 2622 A
2874(if)S
(parent)252 3000 A
3294(is)S
(mode)168 3420 A
3630(0)S
(etc.)168 3714 A
3924(*/)S
3060 V
(25804)210 648 A
1110(if)S
(((r)126 1236 A
1404(=)S
(unlink_file(rldirp,)798 1488 A
(rip,)168 2328 A
(dir_name)))420 2538 A
3000(!=)S
(OK))126 3126 A
(return)252 3294 A
3588(r;)S
3150 V
(25805)210 648 A
3240 V
(25806)210 648 A
1110(/*)S
(Unlink)252 1236 A
1530(.)S
(and)126 1614 A
1782(..)S
(from)168 1908 A
(the)126 2118 A
(dir.)168 2286 A
(The)126 2496 A
(super)210 2664 A
(user)168 2916 A
(can)126 3126 A
(link)168 3294 A
(and)126 3504 A
(unlink)252 3672 A
(any)126 3966 A
(dir,)168 4134 A
3330 V
(25807)210 648 A
1152(*)S
1236(so)S
(don't)210 1362 A
(make)168 1614 A
(too)126 1824 A
(many)168 1992 A
(assumptions)462 2202 A
(about)210 2706 A
(them.)210 2958 A
3420 V
(25808)210 648 A
1152(*/)S
3510 V
(25809)210 648 A
((void))252 1110 A
(unlink_file(rip,)672 1404 A
(NIL_INODE,)420 2118 A
(dot1);)252 2580 A
3600 V
(25810)210 648 A
((void))252 1110 A
(unlink_file(rip,)672 1404 A
(NIL_INODE,)420 2118 A
(dot2);)252 2580 A
3690 V
(25811)210 648 A
(return(OK);)462 1110 A
3780 V
(25812)210 648 A
1026(})S
4050 V
(25815)210 648 A
(/*===========================================================================*)3276 1026 A
4140 V
(25816)210 648 A
1068(*)S
(unlink_file)462 2370 A
4260(*)S
4230 V
(25817)210 648 A
(*===========================================================================*/)3276 1068 A
4320 V
(25818)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(unlink_file(dirp,)714 1530 A
(rip,)168 2286 A
(file_name))420 2496 A
4410 V
(25819)210 648 A
(struct)252 1026 A
(inode)210 1320 A
(*dirp;)252 1572 A
2370(/*)S
(parent)252 2496 A
(directory)378 2790 A
3210(of)S
(file)168 3336 A
3546(*/)S
4500 V
(25820)210 648 A
(struct)252 1026 A
(inode)210 1320 A
(*rip;)210 1572 A
2370(/*)S
(inode)210 2496 A
2748(of)S
(file,)210 2874 A
(may)126 3126 A
3294(be)S
(NIL_INODE)378 3420 A
(too.)168 3840 A
4050(*/)S
4590 V
(25821)210 648 A
(char)168 1026 A
(file_name[NAME_MAX];)840 1236 A
2370(/*)S
(name)168 2496 A
2706(of)S
(file)168 2832 A
3042(to)S
3168(be)S
(removed)294 3294 A
3630(*/)S
4680 V
(25822)210 648 A
1026({)S
4770 V
(25823)210 648 A
1026(/*)S
(Unlink)252 1152 A
('file_name';)504 1446 A
(rip)126 1992 A
(must)168 2160 A
2370(be)S
(the)126 2496 A
(inode)210 2664 A
2916(of)S
('file_name')462 3042 A
3546(or)S
(NIL_INODE.)420 3672 A
4134(*/)S
4860 V
(25824)210 648 A
4950 V
(25825)210 648 A
(ino_t)210 1110 A
(numb;)210 1362 A
2370(/*)S
(inode)210 2496 A
(number)252 2748 A
3042(*/)S
5040 V
(25826)210 648 A
(int)126 1110 A
1362(r;)S
5130 V
(25827)210 648 A
5220 V
(25828)210 648 A
1110(/*)S
1236(If)S
(rip)126 1362 A
1530(is)S
(not)126 1656 A
(NIL_INODE,)420 1824 A
2286(it)S
2412(is)S
(used)168 2538 A
2748(to)S
(get)126 2874 A
(faster)252 3042 A
(access)252 3336 A
3630(to)S
(the)126 3756 A
(inode.)252 3924 A
4218(*/)S
5310 V
(25829)210 648 A
1110(if)S
((rip)168 1236 A
1446(==)S
(NIL_INODE))420 1572 A
2034({)S
5400 V
(25830)210 648 A
1362(/*)S
(Search)252 1488 A
(for)126 1782 A
(file)168 1950 A
2160(in)S
(directory)378 2286 A
(and)126 2706 A
(try)126 2874 A
3042(to)S
(get)126 3168 A
(its)126 3336 A
(inode.)252 3504 A
3798(*/)S
5490 V
(25831)210 648 A
(err_code)336 1362 A
1740(=)S
(search_dir(dirp,)672 1824 A
(file_name,)420 2538 A
(&numb,)252 3000 A
(LOOK_UP);)378 3294 A
5580 V
(25832)210 648 A
1362(if)S
((err_code)378 1488 A
1908(==)S
(OK))126 2034 A
(rip)126 2202 A
2370(=)S
(get_inode(dirp->i_dev,)924 2454 A
((int))210 3420 A
(numb);)252 3672 A
5670 V
(25833)210 648 A
1362(if)S
((err_code)378 1488 A
1908(!=)S
2034(OK)S
2160(||)S
(rip)126 2286 A
2454(==)S
(NIL_INODE))420 2580 A
(return(err_code);)714 3042 A
5760 V
(25834)210 648 A
1110(})S
(else)168 1194 A
1404({)S
5850 V
(25835)210 648 A
(dup_inode(rip);)630 1362 A
2370(/*)S
(inode)210 2496 A
(will)168 2748 A
2958(be)S
(returned)336 3084 A
(with)168 3462 A
(put_inode)378 3672 A
4092(*/)S
5940 V
(25836)210 648 A
1110(})S
6030 V
(25837)210 648 A
6120 V
(25838)210 648 A
1110(r)S
1194(=)S
(search_dir(dirp,)672 1278 A
(file_name,)420 1992 A
((ino_t)252 2454 A
2748(*))S
2874(0,)S
(DELETE);)336 3000 A
6210 V
(25839)210 648 A
8418 V
EP
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BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2160(File:)S
(src/fs/link.c)522 2393 A
12 B
(357)180 4248 A
900 V
7 LST
(25840)210 648 A
1110(if)S
1236((r)S
1362(==)S
(OK))126 1488 A
1656({)S
990 V
(25841)210 648 A
(rip->i_nlinks--;)672 1362 A
2370(/*)S
(entry)210 2496 A
(deleted)294 2748 A
(from)168 3084 A
(parent's)336 3294 A
(dir)126 3672 A
3840(*/)S
1080 V
(25842)210 648 A
(rip->i_update)546 1362 A
1950(|=)S
(CTIME;)252 2076 A
1170 V
(25843)210 648 A
(rip->i_dirt)462 1362 A
1866(=)S
(DIRTY;)252 1950 A
1260 V
(25844)210 648 A
1110(})S
1350 V
(25845)210 648 A
1440 V
(25846)210 648 A
(put_inode(rip);)630 1110 A
1530 V
(25847)210 648 A
(return(r);)420 1110 A
1620 V
(25848)210 648 A
1026(})S
1890 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1980 V
(src/fs/stadir.c)630 2034 A
2070 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
2250 V
(25900)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
(the)126 1950 A
(code)168 2118 A
(for)126 2328 A
(performing)420 2496 A
(four)168 2958 A
(system)252 3168 A
(calls)210 3462 A
(relating)336 3714 A
4092(to)S
2340 V
(25901)210 648 A
1068(*)S
(status)252 1152 A
(and)126 1446 A
(directories.)504 1614 A
2430 V
(25902)210 648 A
1068(*)S
2520 V
(25903)210 648 A
1068(*)S
(The)126 1152 A
(entry)210 1320 A
(points)252 1572 A
(into)168 1866 A
(this)168 2076 A
(file)168 2286 A
(are)126 2496 A
2610 V
(25904)210 648 A
1068(*)S
(do_chdir:)378 1236 A
(perform)294 1698 A
(the)126 2034 A
(CHDIR)210 2202 A
(system)252 2454 A
(call)168 2748 A
2700 V
(25905)210 648 A
1068(*)S
(do_chroot:)420 1236 A
(perform)294 1698 A
(the)126 2034 A
(CHROOT)252 2202 A
(system)252 2496 A
(call)168 2790 A
2790 V
(25906)210 648 A
1068(*)S
(do_stat:)336 1236 A
(perform)294 1698 A
(the)126 2034 A
(STAT)168 2202 A
(system)252 2412 A
(call)168 2706 A
2880 V
(25907)210 648 A
1068(*)S
(do_fstat:)378 1236 A
(perform)294 1698 A
(the)126 2034 A
(FSTAT)210 2202 A
(system)252 2454 A
(call)168 2748 A
2970 V
(25908)210 648 A
1068(*/)S
3060 V
(25909)210 648 A
3150 V
(25910)210 648 A
(#include)336 1026 A
("fs.h")252 1404 A
3240 V
(25911)210 648 A
(#include)336 1026 A
(<sys/stat.h>)504 1404 A
3330 V
(25912)210 648 A
(#include)336 1026 A
("file.h")336 1404 A
3420 V
(25913)210 648 A
(#include)336 1026 A
("fproc.h")378 1404 A
3510 V
(25914)210 648 A
(#include)336 1026 A
("inode.h")378 1404 A
3600 V
(25915)210 648 A
(#include)336 1026 A
("param.h")378 1404 A
3690 V
(25916)210 648 A
3780 V
(25917)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(change,)294 2034 A
((struct)294 2370 A
(inode)210 2706 A
(**iip,)252 2958 A
(char)168 3252 A
(*name_ptr,)420 3462 A
(int)126 3924 A
(len));)252 4092 A
3870 V
(25918)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(stat_inode,)462 2034 A
((struct)294 2538 A
(inode)210 2874 A
(*rip,)210 3126 A
(struct)252 3378 A
(filp)168 3672 A
(*fil_ptr,)378 3882 A
3960 V
(25919)210 648 A
(char)168 2034 A
(*user_addr))462 2244 A
4050();)S
4050 V
(25920)210 648 A
4140 V
(25921)210 648 A
(/*===========================================================================*)3276 1026 A
4230 V
(25922)210 648 A
1068(*)S
(do_chdir)336 2370 A
4260(*)S
4320 V
(25923)210 648 A
(*===========================================================================*/)3276 1068 A
4410 V
(25924)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(do_chdir())420 1488 A
4500 V
(25925)210 648 A
1026({)S
4590 V
(25926)210 648 A
1026(/*)S
(Change)252 1152 A
(directory.)420 1446 A
(This)168 1950 A
(function)336 2160 A
2538(is)S
(also)168 2706 A
(called)252 2916 A
3210(by)S
3336(MM)S
3462(to)S
(simulate)336 3588 A
3966(a)S
(chdir)210 4050 A
4680 V
(25927)210 648 A
1068(*)S
1152(in)S
(order)210 1278 A
1530(to)S
1656(do)S
(EXEC,)210 1782 A
(etc.)168 2034 A
2286(It)S
(also)168 2412 A
(changes)294 2622 A
(the)126 2958 A
(root)168 3126 A
(directory,)420 3336 A
(the)126 3798 A
(uids)168 3966 A
(and)126 4176 A
4770 V
(25928)210 648 A
1068(*)S
(gids,)210 1152 A
(and)126 1404 A
(the)126 1572 A
(umask.)252 1740 A
4860 V
(25929)210 648 A
1068(*/)S
4950 V
(25930)210 648 A
5040 V
(25931)210 648 A
(int)126 1110 A
1278(r;)S
5130 V
(25932)210 648 A
(register)336 1110 A
(struct)252 1488 A
(fproc)210 1782 A
(*rfp;)210 2034 A
5220 V
(25933)210 648 A
5310 V
(25934)210 648 A
1110(if)S
((who)168 1236 A
1446(==)S
(MM_PROC_NR))462 1572 A
2076({)S
5400 V
(25935)210 648 A
(rfp)126 1362 A
1530(=)S
(&fproc[slot1];)588 1614 A
5490 V
(25936)210 648 A
(put_inode(fp->fp_rootdir);)1092 1362 A
5580 V
(25937)210 648 A
(dup_inode(fp->fp_rootdir)1008 1362 A
2412(=)S
(rfp->fp_rootdir);)714 2496 A
5670 V
(25938)210 648 A
(put_inode(fp->fp_workdir);)1092 1362 A
5760 V
(25939)210 648 A
(dup_inode(fp->fp_workdir)1008 1362 A
2412(=)S
(rfp->fp_workdir);)714 2496 A
5850 V
(25940)210 648 A
5940 V
(25941)210 648 A
1362(/*)S
1488(MM)S
(uses)168 1614 A
(access())336 1824 A
2202(to)S
(check)210 2328 A
(permissions.)504 2580 A
3168(To)S
(make)168 3294 A
(this)168 3504 A
(work,)210 3714 A
(pretend)294 3966 A
6030 V
(25942)210 648 A
1404(*)S
(that)168 1488 A
(the)126 1698 A
(user's)252 1866 A
(real)168 2160 A
(ids)126 2370 A
(are)126 2538 A
(the)126 2706 A
(same)168 2874 A
3084(as)S
(the)126 3210 A
(user's)252 3378 A
(effective)378 3672 A
(ids.)168 4092 A
6120 V
(25943)210 648 A
1404(*)S
1488(FS)S
(calls)210 1614 A
(other)210 1866 A
(than)168 2118 A
(access())336 2328 A
2706(do)S
(not)126 2832 A
(use)126 3000 A
(the)126 3168 A
(real)168 3336 A
(ids,)168 3546 A
3756(so)S
(are)126 3882 A
(not)126 4050 A
6210 V
(25944)210 648 A
1404(*)S
(affected.)378 1488 A
8418 V
EP
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/slant 0 def
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630 V
12 B
(358)180 648 A
11 R
2123(File:)S
2356(src/fs/stadir.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(25945)210 648 A
1404(*/)S
990 V
(25946)210 648 A
(fp->fp_realuid)588 1362 A
1992(=)S
1080 V
(25947)210 648 A
(fp->fp_effuid)546 1362 A
1950(=)S
(rfp->fp_effuid;)630 2034 A
1170 V
(25948)210 648 A
(fp->fp_realgid)588 1362 A
1992(=)S
1260 V
(25949)210 648 A
(fp->fp_effgid)546 1362 A
1950(=)S
(rfp->fp_effgid;)630 2034 A
1350 V
(25950)210 648 A
(fp->fp_umask)504 1362 A
1908(=)S
(rfp->fp_umask;)588 1992 A
1440 V
(25951)210 648 A
(return(OK);)462 1362 A
1530 V
(25952)210 648 A
1110(})S
1620 V
(25953)210 648 A
1710 V
(25954)210 648 A
1110(/*)S
(Perform)294 1236 A
(the)126 1572 A
(chdir(name))462 1740 A
(system)252 2244 A
(call.)210 2538 A
2790(*/)S
1800 V
(25955)210 648 A
1110(r)S
1194(=)S
(change(&fp->fp_workdir,)966 1278 A
(name,)210 2286 A
(name_length);)546 2538 A
1890 V
(25956)210 648 A
(return(r);)420 1110 A
1980 V
(25957)210 648 A
1026(})S
2250 V
(25960)210 648 A
(/*===========================================================================*)3276 1026 A
2340 V
(25961)210 648 A
1068(*)S
(do_chroot)378 2370 A
4260(*)S
2430 V
(25962)210 648 A
(*===========================================================================*/)3276 1068 A
2520 V
(25963)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(do_chroot())462 1488 A
2610 V
(25964)210 648 A
1026({)S
2700 V
(25965)210 648 A
1026(/*)S
(Perform)294 1152 A
(the)126 1488 A
(chroot(name))504 1656 A
(system)252 2202 A
(call.)210 2496 A
2748(*/)S
2790 V
(25966)210 648 A
2880 V
(25967)210 648 A
(register)336 1110 A
(int)126 1488 A
1656(r;)S
2970 V
(25968)210 648 A
3060 V
(25969)210 648 A
1110(if)S
((!super_user))546 1236 A
(return(EPERM);)588 1824 A
2706(/*)S
(only)168 2832 A
3042(su)S
(may)126 3168 A
(chroot())336 3336 A
3714(*/)S
3150 V
(25970)210 648 A
1110(r)S
1194(=)S
(change(&fp->fp_rootdir,)966 1278 A
(name,)210 2286 A
(name_length);)546 2538 A
3240 V
(25971)210 648 A
(return(r);)420 1110 A
3330 V
(25972)210 648 A
1026(})S
3600 V
(25975)210 648 A
(/*===========================================================================*)3276 1026 A
3690 V
(25976)210 648 A
1068(*)S
(change)252 2370 A
4260(*)S
3780 V
(25977)210 648 A
(*===========================================================================*/)3276 1068 A
3870 V
(25978)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(change(iip,)462 1530 A
(name_ptr,)378 2034 A
(len))168 2454 A
3960 V
(25979)210 648 A
(struct)252 1026 A
(inode)210 1320 A
(**iip;)252 1572 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(the)126 2958 A
(inode)210 3126 A
(pointer)294 3378 A
(for)126 3714 A
(the)126 3882 A
(dir)126 4050 A
4218(*/)S
4050 V
(25980)210 648 A
(char)168 1026 A
(*name_ptr;)420 1236 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(the)126 2958 A
(directory)378 3126 A
(name)168 3546 A
3756(to)S
(change)252 3882 A
4176(to)S
4302(*/)S
4140 V
(25981)210 648 A
(int)126 1026 A
(len;)168 1194 A
2370(/*)S
(length)252 2496 A
2790(of)S
(the)126 2916 A
(directory)378 3084 A
(name)168 3504 A
(string)252 3714 A
4008(*/)S
4230 V
(25982)210 648 A
1026({)S
4320 V
(25983)210 648 A
1026(/*)S
1152(Do)S
(the)126 1278 A
(actual)252 1446 A
(work)168 1740 A
(for)126 1950 A
(chdir())294 2118 A
(and)126 2454 A
(chroot().)378 2622 A
3042(*/)S
4410 V
(25984)210 648 A
4500 V
(25985)210 648 A
(struct)252 1110 A
(inode)210 1404 A
(*rip;)210 1656 A
4590 V
(25986)210 648 A
(register)336 1110 A
(int)126 1488 A
1656(r;)S
4680 V
(25987)210 648 A
4770 V
(25988)210 648 A
1110(/*)S
(Try)126 1236 A
1404(to)S
(open)168 1530 A
(the)126 1740 A
(new)126 1908 A
(directory.)420 2076 A
2538(*/)S
4860 V
(25989)210 648 A
1110(if)S
((fetch_name(name_ptr,)882 1236 A
(len,)168 2160 A
(M3))126 2370 A
2538(!=)S
(OK))126 2664 A
(return(err_code);)714 2832 A
4950 V
(25990)210 648 A
1110(if)S
1236(()S
((rip)168 1320 A
1530(=)S
(eat_path(user_path)))840 1614 A
2496(==)S
(NIL_INODE))420 2622 A
(return(err_code);)714 3084 A
5040 V
(25991)210 648 A
5130 V
(25992)210 648 A
1110(/*)S
1236(It)S
(must)168 1362 A
1572(be)S
1698(a)S
(directory)378 1782 A
(and)126 2202 A
(also)168 2370 A
2580(be)S
(searchable.)462 2706 A
3210(*/)S
5220 V
(25993)210 648 A
1110(if)S
1236(()S
((rip->i_mode)504 1320 A
1866(&)S
(I_TYPE))294 1950 A
2286(!=)S
(I_DIRECTORY))504 2412 A
5310 V
(25994)210 648 A
1362(r)S
1446(=)S
(ENOTDIR;)336 1530 A
5400 V
(25995)210 648 A
(else)168 1110 A
5490 V
(25996)210 648 A
1362(r)S
1446(=)S
(forbidden(rip,)588 1530 A
(X_BIT);)294 2160 A
2706(/*)S
(check)210 2832 A
3084(if)S
(dir)126 3210 A
3378(is)S
(searchable)420 3504 A
3966(*/)S
5580 V
(25997)210 648 A
5670 V
(25998)210 648 A
1110(/*)S
1236(If)S
(error,)252 1362 A
(return)252 1656 A
(inode.)252 1950 A
2244(*/)S
5760 V
(25999)210 648 A
1110(if)S
1236((r)S
1362(!=)S
(OK))126 1488 A
1656({)S
5850 V
(26000)210 648 A
(put_inode(rip);)630 1362 A
5940 V
(26001)210 648 A
(return(r);)420 1362 A
6030 V
(26002)210 648 A
1110(})S
6120 V
(26003)210 648 A
6210 V
(26004)210 648 A
1110(/*)S
(Everything)420 1236 A
1698(is)S
(OK.)126 1824 A
(Make)168 2034 A
(the)126 2244 A
(change.)294 2412 A
2748(*/)S
8418 V
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/slant 0 def
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630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2123(File:)S
2356(src/fs/stadir.c)S
12 B
(359)180 4248 A
900 V
7 LST
(26005)210 648 A
(put_inode(*iip);)672 1110 A
2370(/*)S
(release)294 2496 A
(the)126 2832 A
(old)126 3000 A
(directory)378 3168 A
3588(*/)S
990 V
(26006)210 648 A
(*iip)168 1110 A
1320(=)S
(rip;)168 1404 A
2370(/*)S
(acquire)294 2496 A
(the)126 2832 A
(new)126 3000 A
(one)126 3168 A
3336(*/)S
1080 V
(26007)210 648 A
(return(OK);)462 1110 A
1170 V
(26008)210 648 A
1026(})S
1440 V
(26011)210 648 A
(/*===========================================================================*)3276 1026 A
1530 V
(26012)210 648 A
1068(*)S
(do_stat)294 2370 A
4260(*)S
1620 V
(26013)210 648 A
(*===========================================================================*/)3276 1068 A
1710 V
(26014)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(do_stat())378 1488 A
1800 V
(26015)210 648 A
1026({)S
1890 V
(26016)210 648 A
1026(/*)S
(Perform)294 1152 A
(the)126 1488 A
(stat(name,)420 1656 A
(buf))168 2118 A
(system)252 2328 A
(call.)210 2622 A
2874(*/)S
1980 V
(26017)210 648 A
2070 V
(26018)210 648 A
(register)336 1110 A
(struct)252 1488 A
(inode)210 1782 A
(*rip;)210 2034 A
2160 V
(26019)210 648 A
(register)336 1110 A
(int)126 1488 A
1656(r;)S
2250 V
(26020)210 648 A
2340 V
(26021)210 648 A
1110(/*)S
(Both)168 1236 A
(stat())252 1446 A
(and)126 1740 A
(fstat())294 1908 A
(use)126 2244 A
(the)126 2412 A
(same)168 2580 A
(routine)294 2790 A
3126(to)S
3252(do)S
(the)126 3378 A
(real)168 3546 A
(work.)210 3756 A
(That)168 4050 A
2430 V
(26022)210 648 A
1152(*)S
(routine)294 1236 A
(expects)294 1572 A
1908(an)S
(inode,)252 2034 A
2328(so)S
(acquire)294 2454 A
2790(it)S
(temporarily.)504 2916 A
2520 V
(26023)210 648 A