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📁 操作系统设计与实现源码
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1440(A)S1538(plain)S1764(\256le)S1918(was)S2100(mentioned)S2549(where)S2821(a)S2891(block)S3139(device)S3427(was)S3609(required,)S3995(e.g.,)S4190(in)S10 B4293(mount)S10 R4573(.)S3408 V1080(16)S1230(EBUSY)S1611(Resource)S2011(busy)S3528 V1440(An)S1589(attempt)S1917(to)S(mount)256 2021 A2303(a)S2374(device)S2663(that)S2840(was)S3023(already)S(mounted)351 3346 A3723(or)S3833(an)S3954(attempt)S4282(was)S4466(made)S4711(to)S(dismount)373 4816 A5216(a)S3648 V1440(device)S1734(on)S1865(which)S2142(there)S2375(is)S2473(an)S2599(active)S2870(\256le)S3029(\(open)S3288(\256le,)S3472(current)S3788(directory,)S(mounted-on)485 4207 A4722(\256le,)S4906(or)S5020(active)S3768 V1440(text)S1616(segment\).)S2060(A)S2158(request)S2474(was)S2656(made)S2899(to)S3002(an)S3122(exclusive)S(access)258 3527 A3810(device)S4098(that)S4274(was)S4456(already)S4778(in)S4881(use.)S3936 V1080(17)S1230(EEXIST)S1629(File)S1811(exists)S4056 V1440(An)S1588(existing)S1931(\256le)S2085(was)S2267(mentioned)S2716(in)S2819(an)S2939(inappropriate)S3501(context,)S3847(e.g.,)S10 B4042(link)S10 R4210(.)S4224 V1080(18)S1230(EXDEV)S1623(Cross-device)S2174(link)S4344 V1440(A)S1538(hard)S1742(link)S1923(to)S2026(a)S2096(\256le)S2250(on)S2375(another)S2702(device)S2990(was)S3172(attempted.)S4512 V1080(19)S(ENODEV)416 1230 A1696(No)S1844(such)S2053(device)S4632 V1440(An)S1593(attempt)S1926(was)S2114(made)S2363(to)S(access)258 2472 A2761(a)S2837(device)S3131(that)S3313(is)S3411(not)S3570(con\256gured)S4031(by)S4162(the)S4316(system,)S4651(i.e.,)S4830(there)S5063(is)S5161(no)S4752 V1440(driver)S1706(for)S1849(the)S1997(device.)S4920 V1080(20)S1230(ENOTDIR)S1724(Not)S1900(a)S1970(directory)S5040 V1440(A)S(non-directory)548 1540 A2115(was)S2299(speci\256ed)S2684(where)S2958(a)S3030(directory)S3421(is)S3515(required,)S3903(for)S4048(example,)S4441(in)S4546(a)S4618(path)S4819(name)S5065(or)S5177(as)S5160 V1440(an)S1560(argument)S1965(to)S10 B2068(chdir)S10 R2298(.)S5328 V1080(21)S1230(EISDIR)S1606(Is)S1704(a)S1774(directory)S5448 V1440(An)S1588(attempt)S1915(to)S2018(write)S2251(on)S2376(a)S2446(directory.)S5616 V1080(22)S(EINVAL)377 1230 A1657(Invalid)S1967(argument)S5736 V1440(Some)S1695(invalid)S2000(argument:)S(dismounting)501 2434 A2961(a)S(non-mounted)535 3033 A3595(device,)S3910(mentioning)S4394(an)S(unknown)373 4516 A4916(signal)S5183(in)S5856 V10 B1440(signal,)S10 R1754(or)S1876(some)S2126(other)S2371(argument)S2789(inappropriate)S3363(for)S3518(the)S3678(call.)S3911(Also)S4138(set)S4287(by)S4424(math)S4662(functions,)S5098(\(see)S5976 V10 B1440(math)S10 R1664(\(3\)\).)S6144 V1080(23)S1230(ENFILE)S1629(File)S1811(table)S2032(over\257ow)S6264 V1440(The)S1622(system's)S1999(table)S2220(of)S2329(open)S2549(\256les)S2742(is)S2834(full,)S3024(and)S3194(temporarily)S3689(no)S3814(more)S10 I4046(opens)S10 R4305(can)S4470(be)S(accepted.)378 4590 A6432 V1080(24)S1230(EMFILE)S1645(Too)S1832(many)S2080(open)S2300(\256les)S6552 V1440(The)S1625(limit)S1843(on)S1971(the)S2122(number)S2457(of)S2569(open)S2792(\256les)S2988(per)S3145(process,)S3500(OPEN_MAX,)S4102(is)S(reached.)339 4197 A4590(As)S4731(released,)S5116(this)S6672 V1440(limit)S1655(is)S1747(20)S1872(for)S2015(Minix,)S2310(and)S2480(30)S2605(for)S2748(Minix-vmd.)S6840 V1080(25)S1230(ENOTTY)S1685(Not)S1861(a)S1931(typewriter)S6960 V1440(The)S1624(\256le)S1780(mentioned)S2231(in)S2336(an)S10 B2458(ioctl)S10 R2670(is)S2764(not)S2919(a)S2991(terminal)S3354(or)S3465(one)S3637(of)S3748(the)S3898(devices)S4227(to)S4332(which)S4605(this)S4777(call)S4951(applies.)S7080 V1440(\(Often)S1729(seen)S1933(error)S2155(from)S2376(programs)S2781(with)S(bugs)189 2985 A3199(in)S3302(their)S3512(error)S3734(reporting)S4128(code.\))S7248 V1080(26)S1230(ETXTBSY)S1735(Text)S1945(\256le)S2099(busy)S7368 V1440(Attempt)S1795(to)S1898(execute)S2231(a)S2301(program)S2667(that)S2843(is)S2935(open)S3155(for)S(writing.)316 3298 A3664(Obsolete)S(under)229 4047 A4301(Minix.)S7903 V720(September)S1176(13,)S(1996)200 1326 A2669(\()S2711(June)S2920(30,)S(1986)200 3070 A3278(\))S4990(Page)S5211(2)S8143 VEP%%Page: 3 3BP/slant 0 def/height 0 def480 V10 R720(INTRO)S1037(\()S1079(2)S1137(\))S2696(Eighth)S(Edition)296 2989 A4810(INTRO)S5127(\()S5169(2)S5227(\))S960 V1080(27)S1230(EFBIG)S1572(File)S1754(too)S1907(large)S1080 V1440(The)S1622(size)S1804(of)S1913(a)S1983(\256le)S(exceeded)375 2137 A2537(the)S2685(maximum)S(\(little)219 3117 A3361(over)S3565(64)S3690(megabytes)S4145(for)S4288(the)S4436(V2)S4584(\256le)S4738(system\).)S1248 V1080(28)S1230(ENOSPC)S1667(No)S(space)224 1815 A2064(left)S2224(on)S2349(device)S1368 V1440(A)S10 B1547(write)S10 R1806(to)S1918(an)S2047(ordinary)S2422(\256le,)S2610(the)S2767(creation)S3126(of)S3244(a)S3323(directory)S3722(or)S3841(symbolic)S4244(link,)S4460(or)S4579(the)S4737(creation)S5097(of)S5216(a)S1488 V1440(directory)S1831(entry)S2065(failed)S(because)319 2322 A2668(no)S2795(more)S3029(disk)S3223(blocks)S3512(are)S3663(available)S4054(on)S4181(the)S4331(\256le)S4487(system,)S4817(or)S4927(the)S5076(allo-)S1608 V1440(cation)S1716(of)S1830(an)S(inode)223 1955 A2208(for)S2356(a)S2431(newly)S2707(created)S3029(\256le)S3188(failed)S(because)319 3448 A3797(no)S3927(more)S(inodes)262 4164 A4457(are)S4612(available)S5007(on)S5138(the)S1728 V1440(\256le)S1594(system.)S1896 V1080(29)S1230(ESPIPE)S1606(Illegal)S1889(seek)S2016 V1440(An)S10 B1601(lseek)S10 R1852(was)S2047(issued)S2336(to)S2452(a)S2535(pipe)S2746(or)S2868(TCP/IP)S3209(channel.)S3610(This)S3827(error)S4062(may)S4273(also)S4473(be)S4607(issued)S4897(for)S5054(other)S2136 V(non-seekable)531 1440 A1996(devices.)S2304 V1080(30)S1230(EROFS)S1594(Read-only)S2038(\256le)S2192(system)S2424 V1440(An)S1588(attempt)S1915(to)S2018(modify)S2333(a)S2403(\256le)S2557(or)S2666(directory)S3055(was)S3237(made)S3480(on)S3605(a)S3675(device)S(mounted)351 3963 A4339(read-only.)S2592 V1080(31)S1230(EMLINK)S1673(Too)S1860(many)S2108(links)S2712 V1440(An)S1595(attempt)S1929(to)S2039(make)S2289(more)S2528(than)S2733(a)S2810(certain)S3117(number)S3456(of)S3572(hard)S3783(links)S4010(to)S4121(a)S4199(\256le.)S4411(The)S4601(advertized)S5054(max-)S2832 V1440(imum,)S1726(LINK_MAX,)S2305(is)S(127,)175 2399 A2601(but)S2756(Minix-vmd)S3240(uses)S3440(a)S3512(much)S3762(larger)S4025(maximum)S4459(of)S(32767)250 4569 A4845(for)S4989(the)S5138(V2)S2952 V1440(\256le)S1594(system.)S3120 V1080(32)S1230(EPIPE)S1550(Broken)S1871(pipe)S3240 V1440(A)S1541(write)S1777(on)S1905(a)S1978(pipe)S2179(or)S2291(TCP/IP)S2622(channel)S2963(for)S3109(which)S3383(there)S3613(is)S3708(no)S3836(process)S4166(to)S4272(read)S4475(the)S4627(data.)S4874(This)S5082(con-)S3360 V(dition)234 1440 A1709(normally)S2107(generates)S2523(the)S2681(signal)S2955(SIGPIPE;)S3388(the)S3545(error)S3776(is)S3877(returned)S4247(if)S4343(the)S4500(signal)S4774(is)S(caught)268 4875 A5177(or)S3480 V(ignored.)332 1440 A3648 V1080(33)S1230(EDOM)S1577(Math)S1814(argument)S3768 V1440(The)S1622(argument)S2027(of)S2136(a)S2206(function)S2566(in)S2669(the)S2817(math)S3043(package)S3398(is)S3490(out)S3643(of)S3752(the)S3900(domain)S4226(of)S4335(the)S4483(function.)S3936 V1080(34)S(ERANGE)410 1230 A1690(Result)S1972(too)S2125(large)S4056 V1440(The)S1622(value)S1865(of)S1974(a)S2044(function)S2404(in)S2507(the)S2655(math)S2881(package)S3236(is)S3328(unrepresentable)S3991(within)S4273(machine)S4639(precision.)S4224 V1080(35)S1230(EDEADLK)S1758(Resource)S2158(deadlock)S2546(avoided)S4344 V1440(A)S1541(process)S1871(attempts)S2240(to)S(place)213 2346 A2587(a)S2660(blocking)S3039(lock)S3240(on)S3368(a)S3442(\256le)S3600(that)S3780(is)S3876(already)S4202(locked)S4499(by)S4628(another)S4959(process)S4464 V1440(and)S1616(that)S1798(process)S2131(is)S(waiting)302 2228 A2560(for)S2708(the)S2861(\256rst)S3048(process)S3380(to)S3488(unlock)S3791(a)S3866(\256le)S4025(that)S4206(\256rst)S4393(process)S4725(already)S5052(has)S5216(a)S4584 V1440(lock)S1638(on.)S1813(\(The)S2029(classic)S2323("lock)S2562(A,)S2685(lock)S2883(B")S3016(by)S3141(process)S3468(1,)S3568(and)S3738("lock)S3977(B,)S4094(lock)S4292(A")S4431(by)S4556(process)S4883(2.\))S4752 V1080(36)S(ENAMETOOLONG)848 1230 A2128(File)S2310(name)S2553(too)S(long)178 2706 A4872 V1440(The)S1622(path)S1820(name)S(exceeds)319 2063 A2407(PATH_MAX)S2981(characters.)S3466(PATH_MAX)S4040(equals)S(255)150 4322 A4497(as)S4606(distributed.)S5040 V1080(37)S1230(ENOLCK)S1690(No)S1838(locks)S2075(available)S5160 V1440(The)S1622(system's)S1999(table)S2220(of)S2329(active)S2595(locks)S2832(is)S2924(full.)S5328 V1080(38)S1230(ENOSYS)S1673(Function)S2055(not)S2208(implemented)S5448 V1440(The)S1622(system)S1926(call)S2097(is)S2189(not)S(supported.)421 2342 A2813(Either)S3085(an)S3205(old)S3358(program)S3724(uses)S3922(an)S4042(obsolete)S4402(call,)S4598(or)S4707(a)S4777(program)S5143(for)S5568 V1440(a)S1510(more)S1742(capable)S2075(system)S2379(is)S2471(run)S2630(on)S2755(a)S2825(less)S3001(capable)S3334(system.)S5736 V1080(39)S1230(ENOTEMPTY)S1892(Directory)S2304(not)S2457(empty)S5856 V1440(A)S1538(directory)S1927(with)S2131(entries)S2425(other)S2657(than)S2855(.)S2905(and)S3075(..)S3175(was)S(supplied)340 3357 A3722(to)S3825(a)S3895(remove)S4222(directory)S4611(or)S4720(rename)S5042(call.)S6024 V1080(40)S1230(ELOOP)S1606(Too)S1793(many)S2041(symbolic)S2434(links)S6144 V1440(A)S1542(path)S1744(name)S(lookup)278 1991 A(involved)351 2298 A2678(more)S2914(than)S3116(SYMLOOP)S3627(symbolic)S4024(links.)S4298(SYMLOOP)S4810(equals)S5097(8)S5177(as)S6264 V1440(distributed.)S1945(\(Minix-vmd\))S6432 V1080(50)S1230(EPACKSIZE)S1825(Invalid)S2135(packet)S2423(size)S6600 V1080(51)S1230(EOUTOFBUFS)S1931(Not)S(enough)295 2107 A2427(buffers)S2738(left)S6768 V1080(52)S1230(EBADIOCTL)S1853(Illegal)S2136(ioctl)S2340(for)S2483(device)S6936 V1080(53)S1230(EBADMODE)S1852(Bad)S2039(mode)S2287(in)S2390(ioctl)S7104 V1080(54)S1230(EWOULDBLOCK)S2060(Would)S2358(block)S7272 V1080(55)S(EBADDEST)528 1230 A1808(Bad)S1995(destination)S2461(address)S7903 V720(Page)S941(3)S2669(\()S2711(June)S2920(30,)S(1986)200 3070 A3278(\))S4455(September)S4911(13,)S(1996)200 5061 A8143 VEP%%Page: 4 4BP/slant 0 def/height 0 def480 V10 R720(INTRO)S1037(\()S1079(2)S1137(\))S2696(Eighth)S(Edition)296 2989 A4810(INTRO)S5127(\()S5169(2)S5227(\))S960 V1080(56)S1230(EDSTNOTRCH)S1948(Destination)S2437(not)S(reachable)387 2590 A1128 V1080(57)S(EISCONN)438 1230 A1718(Already)S(connected)408 2068 A1296 V1080(58)S(EADDRINUSE)646 1230 A1926(Address)S2281(in)S2384(use)S1464 V1080(59)S(ECONNREFUSED)797 1230 A(Connection)463 2077 A2565(refused)S1632 V1080(60)S(ECONNRESET)657 1230 A(Connection)463 1937 A2425(reset)S1800 V1080(61)S(ETIMEDOUT)590 1230 A(Connection)463 1870 A2358(timed)S2612(out)S1968 V1080(62)S1230(EURG)S1555(Urgent)S1860(data)S2053(present)S2136 V1080(63)S(ENOURG)421 1230 A1701(No)S1849(urgent)S2131(data)S2324(present)S2304 V1080(64)S(ENOTCONN)556 1230 A1836(No)S(connection)441 1984 A2472 V1080(65)S1230(ESHUTDOWN)S1920(Already)S2270(shutdown)S2640 V1080(66)S(ENOCONN)494 1230 A1774(No)S1922(such)S(connection)441 2131 A2808 V1080(67)S1230(EINPROGRESS)S1959(Operation)S2387(now)S2585(in)S2688(progress)S2976 V1080(68)S(EALREADY)545 1230 A1825(Operation)S2253(already)S2575(in)S2678(progress)S3144 V9 R720(D)S722(DE)S790(EF)S848(FI)S900(IN)S933(NI)S1001(IT)S1034(TI)S1092(IO)S1125(ON)S1193(NS)S1261(S)S3264 V10 R1080(Process)S1413(ID)S3384 V1330(Each)S1559(active)S1827(process)S2156(in)S2262(the)S2413(system)S2720(is)S2815(uniquely)S3194(identi\256ed)S3602(by)S3730(a)S(positive)318 3803 A4149(integer)S4457(called)S4726(a)S4799(process)S5129(ID.)S3504 V1330(The)S1514(range)S1765(of)S1876(this)S2048(ID)S2182(is)S2276(from)S2499(1)S2575(to)S(29999.)275 2679 A3005(The)S3188(special)S3494(process)S3822(with)S4027(process)S4355(ID)S4488(1)S4564(is)S10 B4657(init)S10 R4803(,)S4854(the)S5003(ances-)S3624 V1330(tor)S1467(of)S1576(all)S1702(processes.)S3792 V1080(Parent)S1363(process)S1690(ID)S3912 V1330(A)S1429(new)S1623(process)S1951(is)S2044(created)S2362(by)S2488(a)S2559(currently)S2950(active)S3218(process;)S3575(\(see)S10 B3765(fork)S10 R3950(\(2\)\).)S4179(The)S4363(parent)S4642(process)S4971(ID)S5105(of)S5216(a)S4032 V1330(process)S1657(is)S1749(the)S1897(process)S2224(ID)S2356(of)S2465(its)S2585(creator,)S2916(unless)S3192(the)S3340(creator)S3646(dies,)S3858(then)S10 B4056(init)S10 R4227(becomes)S4604(the)S4752(parent)S5029(of)S5138(the)S4152 V1330(orphaned)S1729(process.)S4320 V1080(Process)S(Group)257 1413 A1695(ID)S4440 V1330(Each)S1561(active)S1831(process)S2162(is)S2258(a)S2332(member)S2691(of)S2804(a)S2878(process)S(group)234 3209 A3472(that)S3652(is)S3748(identi\256ed)S4157(by)S4287(a)S(positive)318 4362 A4710(integer)S5020(called)S4560 V1330(the)S1482(process)S(group)234 1813 A2076(ID.)S2262(This)S2470(is)S2566(the)S2717(process)S3047(ID)S3182(of)S3294(the)S(group)234 3445 A3707(leader.)S4032(This)S(grouping)362 4239 A

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