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(protocol^@@@!*UnixLabels*file_descr@@@"@@#@@$@@%@@'@4@@U@@2domain_of_sockaddr*@*UnixLabels(sockaddr@@@(*UnixLabels-socket_domain@@@)@@*@<<<m@@V@@*socketpair+'cloexecG@@@+@@@5&domain*UnixLabels-socket_domain@@@,$kind*UnixLabels+socket_type@@@-(protocol@@@.@*UnixLabels*file_descr@@@/@*UnixLabels*file_descr@@@0@@1@@2@@3@@4@@6@:;?Z@@9W@@&accept,'cloexec1@@@7@@@=@*UnixLabels*file_descr@@@8@*UnixLabels*file_descr@@@9@*UnixLabels(sockaddr@@@:@@;@@<@@>@pq1a@@oX@@$bind-@*UnixLabels*file_descr@@@?$addr*UnixLabels(sockaddr@@@@@@@A@@B@@C@hhh@@Y@@'connect.@*UnixLabels*file_descr@@@D$addr*UnixLabels(sockaddr@@@E@@@F@@G@@H@@@Z@@&listen/@*UnixLabels*file_descr@@@I#maxh@@@J@@@K@@L@@M@@@@[@@0shutdown_command0[;@@0SHUTDOWN_RECEIVE1@@@@]@-SHUTDOWN_SEND2@@*,*;@@^@,SHUTDOWN_ALL3@@cecs@@_@@@A$Unix0shutdown_command@@@O@@@@ @@A@\@A@(shutdown4@*UnixLabels*file_descr@@@`$mode*UnixLabels0shutdown_command@@@aK@@@b@@c@@d@* + @@)`@@+getsockname5@*UnixLabels*file_descr@@@e*UnixLabels(sockaddr@@@f@@g@E!!F!I@@Da@@+getpeername6@*UnixLabels*file_descr@@@h*UnixLabels(sockaddr@@@i@@j@`zzaz@@_b@@(msg_flag7\;@@'MSG_OOB8@@o  p @@nd@-MSG_DONTROUTE9@@xy&@@we@(MSG_PEEK:@@')'3@@f@@@A$Unix(msg_flag@@@l@@@@ @@A@c@A@$recv;@*UnixLabels*file_descr@@@}#buf@@@~#posF@@@#lenO@@@$mode*UnixLabels(msg_flag@@@@@@f@@@@@@@@@@@@@@||@@g@@(recvfrom<@*UnixLabels*file_descr@@@#buf@@@#pos@@@#len@@@$mode6*UnixLabels(msg_flag@@@@@@@@@@@*UnixLabels(sockaddr@@@@@@@@@@@@@@@@%!&#Zl@@$h@@$send=@*UnixLabels*file_descr@@@#bufm@@@#pos@@@#len@@@$mode*UnixLabels(msg_flag@@@@@@@@@@@@@@@@@@@@j&k'@@ii@@.send_substring>@*UnixLabels*file_descr@@@#buf@@@#pos#@@@#len,@@@$mode*UnixLabels(msg_flag@@@@@@C@@@@@@@@@@@@@@*!!+6@@j@@&sendto?@*UnixLabels*file_descr@@@#buf@@@#posh@@@#lenq@@@$mode*UnixLabels(msg_flag@@@@@@$addr*UnixLabels(sockaddr@@@ @@@@@@@@@@@@@@@@02BZ@@k@@0sendto_substring@@*UnixLabels *file_descr@@@#buf @@@#pos @@@#len @@@$moded*UnixLabels(msg_flag@@@@@@@*UnixLabels(sockaddr@@@@@@@@@@@@@@@@@@@O5P7@@Nl@@2socket_bool_optionA];@@(SO_DEBUGB@@^B_B@@]n@,SO_BROADCASTC@@gChC@@fo@,SO_REUSEADDRD@@pD.0qD.>@@op@,SO_KEEPALIVEE@@yEprzEp@@xq@,SO_DONTROUTEF@@FF@@r@,SO_OOBINLINEG@@GG@@s@-SO_ACCEPTCONNH@@HH,@@t@+TCP_NODELAYI@@I`bI`o@@u@)IPV6_ONLYJ@@JJ@@v@,SO_REUSEPORTK@@KK@@w@@@A$Unix2socket_bool_option@@@@@@@A @@A@m@A@1socket_int_optionL^;@@)SO_SNDBUFM@@QQ"@@y@)SO_RCVBUFN@@RACRAN@@z@(SO_ERRORO@@SqsT~@0ocaml.deprecatedT~T~@ "Use Unix.getsockopt_error instead.T~T~@@T~T~@@@@@@T~@@{@'SO_TYPEP@@VV@@|@+SO_RCVLOWATQ@@ W#% W#2@@ }@+SO_SNDLOWATR@@ Xsu Xs@@ ~@@@A$Unix1socket_int_option@@@@@@@ P @@A@ x@A@4socket_optint_optionS_;@@)SO_LINGERT@@ +^ ,^@@ *@@@A$Unix4socket_optint_option@@@@@@@ 8]]] @@A@ 6@A@3socket_float_optionU`;@@+SO_RCVTIMEOV@@ Ff6: Gf6E@@ E@+SO_SNDTIMEOW@@ Ogmo Pgm|@@ N@@@A$Unix3socket_float_option@@@@@@@ \e @@A@ Z@A@*getsockoptX@*UnixLabels*file_descr@@@@*UnixLabels2socket_bool_option@@@_@@@@@@@@ }m ~m@@ |@@*setsockoptY@*UnixLabels*file_descr@@@@*UnixLabels2socket_bool_option@@@@@@@ @@@!@@"@@#@@$@ q q^@@ @@.getsockopt_intZ@*UnixLabels*file_descr@@@%@*UnixLabels1socket_int_option@@@&\@@@'@@(@@)@ t t@@ @@.setsockopt_int[@*UnixLabels *file_descr@@@*@*UnixLabels!1socket_int_option@@@+@"@@@,#@@@-@@.@@/@@0@ w   w c@@ @@1getsockopt_optint\@*UnixLabels$*file_descr@@@1@*UnixLabels%4socket_optint_option@@@2[&@@@3@@@5@@6@@7@!z!z@@!@@1setsockopt_optint]@*UnixLabels'*file_descr@@@8@*UnixLabels(4socket_optint_option@@@9@)@@@:@@@<g*@@@=@@>@@?@@@@!F~FF!G^@@!E@@0getsockopt_float^@*UnixLabels+*file_descr@@@A@*UnixLabels,3socket_float_option@@@B-@@@C@@D@@E@!h!i 4@@!g@@0setsockopt_float_@*UnixLabels.*file_descr@@@F@*UnixLabels/3socket_float_option@@@G@0@@@H1@@@I@@J@@K@@L@!  !  @@!@@0getsockopt_error`@*UnixLabels2*file_descr@@@M*UnixLabels3%error@@@N@@@P@@Q@! ; ;! ; l@@!@@/open_connectiona@*UnixLabels4(sockaddr@@@R@&Stdlib5*in_channel@@@S@&Stdlib6+out_channel@@@T@@U@@V@!  !  3@@!@@3shutdown_connectionb@&Stdlib7*in_channel@@@W8@@@X@@Y@! j j! j @@!@@0establish_serverc@@&Stdlib9*in_channel@@@Z@&Stdlib:+out_channel@@@[7;@@@\@@]@@^$addr*UnixLabels<(sockaddr@@@_H=@@@`@@a@@b@"'"(@@@"&@@*host_entryda;@@&h_namee@@>@@@d":rv";r@@"9@)h_aliasesf@@b@?@@@g@@@i"M"N@@"L@*h_addrtypeg@@*UnixLabelsA-socket_domain@@@l"]"^@@"\@+h_addr_listh@@C*UnixLabelsB)inet_addr@@@o@@@q"s"t@@"r@@@A$UnixD*host_entry@@@t@@@@"NN"@@@@"@A@.protocol_entryib;@@&p_namej@@E@@@"MQ"Ma@@"@)p_aliasesk@@G F@@@@@@"bf"b@@"@'p_protol@@ GH@@@""@@"@@@A$UnixI.protocol_entry@@@@@@@"!!"@@@@"@A@-service_entrymc;@@&s_namen@@ >J@@@ʰ""@@"@)s_aliaseso@@L PK@@@@@@ϰ"",@@"@&s_portp@@ M@@@Ұ"-1"->@@"@'s_protoq@@ kN@@@հ#?C#?S@@"@@@A$UnixO-service_entry@@@@@@@# #TW@@@@# @A@+gethostnamer@ >P@@@ Q@@@@@@#"##@@#!@@-gethostbynames@ R@@@*UnixLabelsS*host_entry@@@@@@#:#;@@#9@@-gethostbyaddrt@*UnixLabelsT)inet_addr@@@*UnixLabelsU*host_entry@@@@@@#Ujj#Vj@@#T@@.getprotobynameu@ V@@@*UnixLabelsW.protocol_entry@@@@@@#m#n*@@#l@@0getprotobynumberv@!X@@@*UnixLabelsY.protocol_entry@@@@@@##@@#@@-getservbynamew@!Z@@@(protocol! [@@@*UnixLabels\-service_entry@@@ @@ @@ @#33#3q@@#@@-getservbyportx@!J]@@@ (protocol!*^@@@ *UnixLabels_-service_entry@@@@@@@@##@@#@@)addr_infoyd;@@)ai_familyz@@*UnixLabels`-socket_domain@@@##@@#@+ai_socktype{@@*UnixLabelsa+socket_type@@@##@@#@+ai_protocol|@@!b@@@# $# 6@@#@'ai_addr}@@*UnixLabelsc(sockaddr@@@$ fj$ f}@@$ @,ai_canonname~@@!d@@@$$@@$@@@A$Unixe)addr_info@@@#@@@@$$$%@@@@$#@A@2getaddrinfo_optione;@@)AI_FAMILY*UnixLabelsf-socket_domain@@@O@@$<QU$=Qo@@$;@+AI_SOCKTYPE*UnixLabelsg+socket_type@@@P@@$N$O@@$M@+AI_PROTOCOL!h@@@Q@@$]$^@@$\@.AI_NUMERICHOST@@$f57$g5G@@$e@,AI_CANONNAME@@$o$p@@$n@*AI_PASSIVE@@$xLN$yLZ@@$w@@@A$Unixi2getaddrinfo_option@@@R@@@@$ @@@@$@A@+getaddrinfo@!j@@@s@"k@@@t@m*UnixLabelsl2getaddrinfo_option@@@u@@@wo*UnixLabelsn)addr_info@@@x@@@z@@{@@|@@}@$$N@@$@@)name_infof;@@+ni_hostname@@"7p@@@$!P!T$!P!i@@$@*ni_service@@"Dq@@@$!!$!!@@$@@@A$Unixr)name_info@@@@@@@$!.!.$!!@@@@$@A@2getnameinfo_optiong;@@)NI_NOFQDN@@$"a"e$"a"n@@$@.NI_NUMERICHOST@@$""$""@@$@+NI_NAMEREQD@@%""%""@@%@.NI_NUMERICSERV@@% #)#+% #)#;@@%@(NI_DGRAM@@%!#n#p%!#n#z@@%@@@A$Unixs2getnameinfo_option@@@@@@@%&"-"- @@A@%$@A@+getnameinfo@*UnixLabelst(sockaddr@@@@ lv*UnixLabelsu2getnameinfo_option@@@@@@*UnixLabelsw)name_info@@@@@@@@%P%$ $ %Q%$ $M@@%O@@+terminal_ioh;@@(c_ignbrkA@Ex@@@%c7&&%d7&&@@%b@(c_brkintA@Ry@@@%p8&&%q8&&@@%o@(c_ignparA@_z@@@%}9'' %~9''8@@%|@(c_parmrkA@l{@@@%:'g'k%:'g'@@%@'c_inpckA@y|@@@%;''%;''@@%@(c_istripA@}@@@İ%<''%<''@@%@'c_inlcrA@~@@@ǰ%=(+(/%=(+(F@@%@'c_igncrA@@@@ʰ%>(g(k%>(g(@@%@'c_icrnlA@@@@Ͱ%?((%?((@@%@&c_ixonA@@@@а%@((%@((@@%@'c_ixoffA@@@@Ӱ%A)))-%A)))D@@%@'c_opostA@@@@ְ%C))%C))@@%@'c_obaudA@#@@@ٰ%E))&E)*@@%@'c_ibaudA@#@@@ܰ& F*:*>& F*:*T@@& @'c_csizeA@#@@@߰&G*p*t&G*p*@@&@(c_cstopbA@#@@@&&H**&'H**@@&%@'c_creadA@@@@&3I**&4I*+@@&2@(c_parenbA@"@@@&@J+4+8&AJ+4+P@@&?@(c_paroddA@/@@@&MK++&NK++@@&L@'c_hupclA@<@@@&ZL++&[L++@@&Y@(c_clocalA@I@@@&gM,, &hM,,"@@&f@&c_isigA@V@@@&tO,],a&uO,],w@@&s@(c_icanonA@c@@@&P,,&P,,@@&@(c_noflshA@p@@@&R-&-*&R-&-B@@&@&c_echoA@}@@@&S-q-u&S-q-@@&@'c_echoeA@@@@&T--&T--@@&@'c_echokA@@@@&U-.&U-.@@&@(c_echonlA@@@@&V.H.L&V.H.d@@&@'c_vintrA@$char@@@ &X..&X..@@&@'c_vquitA@@@@ &Y..&Y./@@&@(c_veraseA@@@@&Z/?/C&Z/?/[@@&@'c_vkillA@(@@@&[//&[//@@&@&c_veofA@5@@@'\//'\//@@'@&c_veolA@B@@@']0%0)']0%0?@@'@&c_vminA@$@@@'^0v0z'^0v0@@'@'c_vtimeA@$@@@'+`11 ',`11!@@'*@(c_vstartA@i@@@!'8a1O1S'9a1O1k@@'7@'c_vstopA@v@@@$'Eb11'Fb11@@'D@@@A$Unix+terminal_io@@@'@@@@'R4&Q&Q'Sc11@@@@'Q@A@)tcgetattr@*UnixLabels*file_descr@@@*UnixLabels+terminal_io@@@@@@'me11'ne12 @@'l@@,setattr_wheni;@@'TCSANOW@@'|l22'}l22@@'{@)TCSADRAIN@@'m22'm22@@'@)TCSAFLUSH@@'n22'n22@@'@@@A$Unix,setattr_when@@@@@@@'k22 @@A@'@A@)tcsetattr@*UnixLabels*file_descr@@@$mode*UnixLabels,setattr_when@@@@*UnixLabels+terminal_io@@@$@@@@@@@@@@'p22'p23 @@'@@+tcsendbreak@*UnixLabels*file_descr@@@(duration%x@@@% @@@@@@@@'|55'|559@@'@@'tcdrain@*UnixLabels*file_descr@@@%"@@@@@@(66(66(@@(@@+flush_queuej;@@(TCIFLUSH@@(66(66@@(@(TCOFLUSH@@(66(66@@(@)TCIOFLUSHÐ@@("66(#66@@(!@@@A$Unix+flush_queue@@@@@@@(/66 @@A@(-@A@'tcflush@*UnixLabels*file_descr@@@$mode*UnixLabels+flush_queue@@@%s@@@@@@@@(R66(S670@@(Q@@+flow_actionk;@@&TCOOFFƐ@@(a88(b88@@(`@%TCOONǐ@@(j88(k88@@(i@&TCIOFFȐ@@(s88(t88@@(r@%TCIONɐ@@(|88(}88@@({@@@A$Unix+flow_action@@@@@@@(8~8~ @@A@(@A@&tcflow@*UnixLabels*file_descr@@@$mode*UnixLabels+flow_action@@@%@@@@@@@@(88(89@@(@@&setsid@%@@@&U@@@@@@(:V:V(:V:n@@(@@@3=Interface to the Unix system.@ 3 To use the labeled version of this module, add +module Unix# = *UnixLabels; in your implementation.@ 3 Note: all the functions of this module (except 8UnixLabels.error_messageD@( and Function interrupted by signal@@@@@@@@@@@@) @@30Invalid argument@@@@@@@@@@@@) @@32Hardware I/O error@@@@@@@@@@@@) @@3.Is a directory@@@@@@@@@@@@) @@3 "Too many open files by the process@@@@@@@@@@@@) @@3.Too many links@@@@@@@@@@@@) @@31Filename too long@@@@@@@@@@@@) @@3 !Too many open files in the system@@@@@@@@@@@@) @@3.No such device@@@@@@@@@@@@) @@39No such file or directory@@@@@@@@@@@@) @@36Not an executable file@@@@@@@@@@@@) @@32No locks available@@@@@@@@@@@@) @@31Not enough memory@@@@@@@@@@@@) @@37No space left on device@@@@@@@@@@@@) @@36Function not supported@@@@@@@@@@@@) @@3/Not a directory@@@@@@@@@@@@) @@33Directory not empty@@@@@@@@@@@@) @@3 #Inappropriate I/O control operation@@@@@@@@@@@@) @@39No such device or address@@@@@@@@@@@@) @@37Operation not permitted@@@@@@@@@@@@) @@3+Broken pipe@@@@@@@@@@@@) @@30Result too large@@@@@@@@@@@@) @@35Read-only file system@@@@@@@@@@@@) @@3;Invalid seek e.g. on a pipe@@@@@@@@@@@@) @@3/No such process@@@@@@@@@@@@) @@3,Invalid link@@@@@@@@@@@@) @@35Operation would block@@@@@@@@@@@@) @@39Operation now in progress@@@@@@@@@@@@) @@3=Operation already in progress@@@@@@@@@@@@) @@3>Socket operation on non-socket@@@@@@@@@@@@) @@3Protocol wrong type for socket@@@@@@@@@@@@) @@36Protocol not available@@@@@@@@@@@@) @@36Protocol not supported@@@@@@@@@@@@) @@39Socket type not supported@@@@@@@@@@@@) @@3 !Operation not supported on socket@@@@@@@@@@@@) @@3=Protocol family not supported@@@@@@@@@@@@) @@3 /Address family not supported by protocol family@@@@@@@@@@@@) @@36Address already in use@@@@@@@@@@@@) @@3>Can't assign requested address@@@@@@@@@@@@) @@3/Network is down@@@@@@@@@@@@) @@36Network is unreachable@@@@@@@@@@@@) @@3 #Network dropped connection on reset@@@@@@@@@@@@) @@3 Software caused connection abort@@@@@@@@@@@@) @@38Connection reset by peer@@@@@@@@@@@@) @@39No buffer space available@@@@@@@@@@@@) @@3;Socket is already connected@@@@@@@@@@@@) @@37Socket is not connected@@@@@@@@@@@@) @@3 Can't send after socket shutdown@@@@@@@@@@@@) @@3 !Too many references: can't splice@@@@@@@@@@@@) @@34Connection timed out@@@@@@@@@@@@) @@32Connection refused@@@@@@@@@@@@) @@3,Host is down@@@@@@@@@@@@) @@30No route to host@@@@@@@@@@@@) @@3 !Too many levels of symbolic links@@@@@@@@@@@@) @@3 'File size or position not representable@@@@@@@@@@@@) ) @@3-Unknown error@@@@@@@@@@@@@A)@)) @@3 Raised by the system calls below when an error is encountered. The first component is the error code; the second component is the function name; the third component is the string parameter to the function, if it has one, or the empty string otherwise.@$ G@% and /Unix.Unix_error@@ 8 are the same, and catching one will catch the other.@@@@@@@@@@@@)))@@@@((@@3 0Return a string describing the given error code.@@@@@@@@@@@@(@ )@@@@(Ő35handle_unix_error f x) applies !f$ to !x - and returns the result. If the exception ՐG@ N is raised, it prints a message describing the error and exits with code 2.@@@@@@@@@@@@) @$) @') @@@@)A@ !Access to the process environment@@6UnixLabels.environment3 Return the process environment, as an array of strings with the format ``variable=value''. The returned array is empty if the process has special privileges.@@@@@@@@@@@@) @=) @@@@(=UnixLabels.unsafe_environment3 gReturn the process environment, as an array of strings with the format ``variable=value''. Unlike D@ y, this function returns a populated array even if the process has special privileges. See the documentation for 8UnixLabels.unsafe_getenvD@6 for more details.@@@@$4.12@@@@@@@) @[) @@@@(1UnixLabels.getenv3 sReturn the value associated to a variable in the process environment, unless the process has special privileges.@@@@@@@@)Not_found Dif the variable is unbound or the process has special privileges.@ " This function is identical to *Sys.getenv@@!.@@@@@)@z)@@@@).3 HReturn the value associated to a variable in the process environment.@+ Unlike +D@ O, this function returns the value even if the process has special privileges. It is considered unsafe because the programmer of a setuid or setgid program must be careful to avoid using maliciously crafted environment variables in the search path for executables, the locations for temporary files or logs, and the like.@@@@$4.06@@@)Not_found;if the variable is unbound.@@@@@)@)@@@@)1UnixLabels.putenv31putenv name value K sets the value associated to a variable in the process environment. $name 1 is the name of the environment variable, and %value: its new associated value.@@@@@@@@@@@@)"@)#@)@@@@)3UnixLabels.unsetenv3-unsetenv name6 removes the variable $name> from the process environment.@@@@#5.5@@@@@@@)#@)$@@@@)A@0Process handling@@#9UnixLabels.process_status3 )The termination status of a process. See *Sys.signal@@ 8 for the definitions of the standard signal numbers.@6 On Windows: only 'WEXITED is used (as there are no inter-process signals) but with specific return codes to indicate special termination causes. Look for (NTSTATUS [ values in the Windows documentation to decode such error return codes. In particular, 7STATUS_ACCESS_VIOLATION> error code is the 32-bit *0xC0000005%: as 7Int32.of_int 0xC0000005( is +-1073741819", 3WEXITED -1073741819 " is the Windows equivalent of 5WSIGNALED Sys.sigsegv!.@@@@@@@@@@@@@)])\@@3 #The process terminated normally by $exit -; the argument is the return code.@@@@@@@@@@@@)^)]@@3 QThe process was killed by a signal; the argument is the signal number.@@@@@@@@@@@@)T)S@@3 RThe process was stopped by a signal; the argument is the signal number.@@@@@@@@@@@@@A)L@)F)R@@#4UnixLabels.wait_flag3*Flags for 2UnixLabels.waitpidD@!.@@@@@@@@@@@@@)O@@3 cDo not block if no child has died yet, but immediately return with a pid equal to 0.@@@@@@@@@@@@)O@@3 3Report also the children that receive stop signals.@@@@@@@@@@@@@A)Q@)K)W@@0UnixLabels.execv3/execv prog args= execute the program in file $prog8, with the arguments $args I, and the current process environment. Note that the first argument, (args.(0) L, is by convention the filename of the program being executed, just like ,Sys.argv.(0)(. These &execv* W functions never return: on success, the current program is replaced by the new one.@ On Windows: the CRT simply spawns a new process and exits the current one. This will have unwanted consequences if e.g. another process is waiting on the current one. Using 9UnixLabels.create_processD@/ or one of the .open_process_* % functions instead is recommended.@@@@@@@@*Unix_error*on failure@@@@@)@))@))@@@@)p1UnixLabels.execve3(Same as SD@ U, except that the third argument provides the environment to the program executed.@@@@@@@@@@@@)w@)w)v@)q)p@)e)d@@@@)U1UnixLabels.execvp3(Same as nD@ 5, except that the program is searched in the path.@@@@@@@@@@@@)\@)\)[@)V)U@@@@)F2UnixLabels.execvpe3(Same as @,)?@@@@)7/UnixLabels.wait3 [Wait until one of the children processes die, and return its pid and termination status.@@@@@@@@0Invalid_argument0on Windows. Use D@) instead.@@@@@)D@G)E@@@@)/3(Same as #D@ B, but waits for the child process whose pid is given. A pid of "-1 ' means wait for any child. A pid of !0 means wait for any child in the same process group as the current process. Negative pid arguments represent process groups. The list of options indicates whether 'waitpid ` should return immediately without waiting, and whether it should report stopped children.@ E On Windows: can only wait for a given PID, not any child process.@@@@@@@@@@@@)K@)K)J@t)<@@@@)&1UnixLabels.system3 Execute the given command, wait until it terminates, and return its termination status. The string is interpreted by the shell '/bin/sh= (or the command interpreter 'cmd.exe on Windows) and therefore can contain redirections, quotes, variables, etc. To properly quote whitespace and shell special characters occurring in file names or command arguments, the use of 6Filename.quote_command@@? is recommended. The result +WEXITED 127 2 indicates that the shell couldn't be executed.@@@@@@@@@@@@)?@)@@@@@)50UnixLabels._exit3 Terminate the calling process immediately, returning the given status code to the operating system: usually 0 to indicate no errors, and a small positive integer to indicate failure. Unlike +Stdlib.exit@@", *Unix._exit@@ C performs no finalization whatsoever: functions registered with .Stdlib.at_exit@@ p are not called, input/output channels are not flushed, and the C run-time system is not finalized either.@7 The typical use of *Unix._exit@@, is after a )Unix.fork@@  operation, when the child process runs into a fatal error and must exit. In this case, it is preferable to not perform any finalization action in the child process, as these actions could interfere with similar actions performed by the parent process. For example, output channels should not be flushed by the child process, as the parent process may flush them again later, resulting in duplicate output.@@@@$4.12@@@@@@@)Z@)[@@@@)R1UnixLabels.getpid3>Return the pid of the process.@@@@@@@@@@@@)S@)T@@@@)L2UnixLabels.getppid3 %Return the pid of the parent process.@@@@@@@@0Invalid_argument *on Windows (because it is meaningless)@@@@@)S@)T@@@@)L/UnixLabels.nice3 Change the process priority. The integer argument is added to the ``nice'' value. (Higher values of the ``nice'' value mean lower priorities.) Return the new nice value.@@@@@@@@0Invalid_argument*on Windows@@@@@)S@)T@@@@)LA@7Basic file input/output@@#5UnixLabels.file_descr3 &The abstract type of file descriptors.@@@@@@@@@@@@@@A)T@)N)M@@0UnixLabels.stdin3 #File descriptor for standard input.@@@@@@@@@@@@)P@@@@)J1UnixLabels.stdout3 $File descriptor for standard output.@@@@@@@@@@@@)K@@@@)E1UnixLabels.stderr3 #File descriptor for standard error.@@@@@@@@@@@@)F@@@@)@#4UnixLabels.open_flag3-The flags to 3UnixLabels.openfileD@!.@@@@@@@@@@@@@)G@@30Open for reading@@@@@@@@@@@@)G@@30Open for writing@@@@@@@@@@@@)G@@3@+)?@@@@)40UnixLabels.fsync3;Flush file buffers to disk.@@@@$4.12@@@@@@@)7@<)8@@@@)-/UnixLabels.read36read fd ~buf ~pos ~len' reads #len7 bytes from descriptor "fd $, storing them in byte sequence #buf7, starting at position #pos( in #buf +. Return the number of bytes actually read.@@@@@@@@@@@@)O@l)P@)H)G@)A)@@);):@@@@)28UnixLabels.read_bigarray3(Same as BD@ $, but read the data into a bigarray.@@@@#5.2@@@@@@@);@)<@)4)3@)) @))@@@@(0UnixLabels.write37write fd ~buf ~pos ~len( writes #len5 bytes to descriptor "fd %, taking them from byte sequence #buf7, starting at position #pos( in $buff 0. Return the number of bytes actually written. %write \ repeats the writing operation until all bytes have been written or an error occurs.@@@@@@@@@@@@)'@)(@) )@))@))@@@@) 9UnixLabels.write_bigarray3(Same as HD@ $, but take the data from a bigarray.@@@@#5.2@@@@@@@)@)@) ) @((@((@@@@(ؠ7UnixLabels.single_write3(Same as hD@ @, but attempts to write only once. Thus, if an error occurs, ,single_write - guarantees that no data has been written.@@@@@@@@@@@@(@(@((@((@((@@@@(ɠ:UnixLabels.write_substring3(Same as D@ A, but take the data from a string instead of a byte sequence.@@@@$4.02@@@@@@@(@/(@((@((@((@@@@( !UnixLabels.single_write_substring3(Same as MD@ A, but take the data from a string instead of a byte sequence.@@@@$4.02@@@@@@@(@O(@((@((@((@@@@( UnixLabels.single_write_bigarray3(Same as mD@ $, but take the data from a bigarray.@@@@#5.2@@@@@@@(@o(@((@((~@(y(x@@@@(pA@ 2Interfacing with the standard input/output library@@>UnixLabels.in_channel_of_descr3 nCreate an input channel reading from the given descriptor. The channel is initially in binary mode; use ;set_binary_mode_in ic false if text mode is desired. Text mode is supported only if the descriptor refers to a file or pipe, but is not supported if it refers to a socket.@0 On Windows: 9Stdlib.set_binary_mode_in@@ 8 always fails on channels created with this function.@ Beware that input channels are buffered, so more characters may have been read from the descriptor than those accessed using channel functions. Channels also keep a copy of the current position in the file.@8 Closing the channel "ic- returned by 6in_channel_of_descr fd* using +close_in ic ' also closes the underlying descriptor "fd /. It is incorrect to close both the channel "ic4 and the descriptor "fd!.@ If several channels are created on the same descriptor, one of the channels must be closed, but not the others. Consider for example a descriptor !s + connected to a socket and two channels :ic = in_channel_of_descr s% and ;oc = out_channel_of_descr s 4. The recommended closing protocol is to perform ,close_out oc P, which flushes buffered output to the socket then closes the socket. The "ic J channel must not be closed and will be collected by the GC eventually.@@@@@@@@@@@@(@(@@@@(ɠ?UnixLabels.out_channel_of_descr3 mCreate an output channel writing on the given descriptor. The channel is initially in binary mode; use UnixLabels.descr_of_in_channel3 8Return the descriptor corresponding to an input channel.@@@@@@@@@@@@) @V) @@@@(?UnixLabels.descr_of_out_channel3 9Return the descriptor corresponding to an output channel.@@@@@@@@@@@@(@e(@@@@(񠙠A@6Seeking and truncating@@#7UnixLabels.seek_command36Positioning modes for 0UnixLabels.lseekD@!.@@@@@@@@@@@@@(@@3 9indicates positions relative to the beginning of the file@@@@@@@@@@@@(@@3 4indicates positions relative to the current position@@@@@@@@@@@@(@@3 3indicates positions relative to the end of the file@@@@@@@@@@@@@A)@()@@)3 uSet the current position for a file descriptor, and return the resulting offset (from the beginning of the file).@@@@@@@@@@@@(@(@(@((@@@@(栕3UnixLabels.truncate3 +Truncates the named file to the given size.@@@@@@@@@@@@(@(@((@@@@(ڠ4UnixLabels.ftruncate3 NTruncates the file corresponding to the given descriptor to the given size.@@@@@@@@@@@@(@(@((@@@@(ˠA@+File status@@#4UnixLabels.file_kind@@(̑@@3,Regular file@@@@@@@@@@@@(̑@@3)Directory@@@@@@@@@@@@(̑@@30Character device@@@@@@@@@@@@(̑@@3,Block device@@@@@@@@@@@@(̑@@3-Symbolic link@@@@@@@@@@@@(̑@@3*Named pipe@@@@@@@@@@@@(̑@@3&Socket@@@@@@@@@@@@@A(Π@((@@#0UnixLabels.stats3 The information returned by the /UnixLabels.statD@' calls.@@@@@@@@@@@@@(@@(А3-Device number@@@@@@@@@@@@(@@(ː3,Inode number@@@@@@@@@@@@(@@(Ɛ30Kind of the file@@@@@@@@@@@@(@@(3-Access rights@@@@@@@@@@@@(@@(3/Number of links@@@@@@@@@@@@(@@(34User id of the owner@@@@@@@@@@@@(@@(3File operations on large files@@/4UnixLabels.LargeFile(v3 ^File operations on large files. This sub-module provides 64-bit variants of the functions :UnixLabels.LargeFile.lseekD@ ( (for positioning a file descriptor), =UnixLabels.LargeFile.truncateD@% and >UnixLabels.LargeFile.ftruncateD@ , (for changing the size of a file), and 9UnixLabels.LargeFile.statD@", :UnixLabels.LargeFile.lstatD@% and :UnixLabels.LargeFile.fstatD@ } (for obtaining information on files). These alternate functions represent positions and sizes by 64-bit integers (type %int64 &) instead of regular integers (type #int C), thus allowing operating on files whose sizes are greater than 'max_int!.@@@@@@@@@@@@A 쐠>3$See %lseek!.@@@@@@@@@@@@(@L(@O(@((@@@@(Q3$See (truncate!.@@@@@@@@@@@@(@f(@((@@@@(a3$See )ftruncate!.@@@@@@@@@@@@(@}(@((@@@@(#:UnixLabels.LargeFile.stats@@(@@(3-Device number@@@@@@@@@@@@(@@(3,Inode number@@@@@@@@@@@@(@@(30Kind of the file@@@@@@@@@@@@(@@(3-Access rights@@@@@@@@@@@@(y@@(x3/Number of links@@@@@@@@@@@@(t@@(s34User id of the owner@@@@@@@@@@@@(o@@(n3 returns a Bigarray of kind $kind), layout &layout #, and dimensions as specified in $dims k. The data contained in this Bigarray are the contents of the file referred to by the file descriptor "fd> (as opened previously with D@>, for example). The optional #pos ~ parameter is the byte offset in the file of the data being mapped; it defaults to 0 (map from the beginning of the file).@& If &shared$ is $true \, all modifications performed on the array are reflected in the file. This requires that "fd ) be opened with write permissions. If &shared$ is %false , modifications performed on the array are done in memory only, using copy-on-write of the modified pages; the underlying file is not affected.@# YD@ z is much more efficient than reading the whole file in a Bigarray, modifying that Bigarray, and writing it afterwards.@ To adjust automatically the dimensions of the Bigarray to the actual size of the file, the major dimension (that is, the first dimension for an array with C layout, and the last dimension for an array with Fortran layout) can be given as "-1#. iD@ then determines the major dimension from the size of the file. The file must contain an integral number of sub-arrays as determined by the non-major dimensions, otherwise 'Failure+ is raised.@ k If all dimensions of the Bigarray are given, the file size is matched against the size of the Bigarray. If the file is larger than the Bigarray, only the initial portion of the file is mapped to the Bigarray. If the file is smaller than the big array, the file is automatically grown to the size of the Bigarray. This requires write permissions on "fd!.@ ] Array accesses are bounds-checked, but the bounds are determined by the initial call to (map_file . Therefore, you should make sure no other process modifies the mapped file while you're accessing it, or a SIGBUS signal may be raised. This happens, for instance, if the file is shrunk.@# 0Invalid_argument$ or 'Failure : may be raised in cases where argument validation fails.@@@@$4.06@@@@@@@(@ (@((@((@((~@(m(l@(g(f@@@@(NA@8Operations on file names@@1UnixLabels.unlink37Removes the named file.@ 3 If the named file is a directory, raises: %EPERM: on POSIX compliant system@&EISDIR4 on Linux >= 2.1.132@'EACCESS+ on Windows@@@@@@@@@@@@@@(q@ (r@@@@(j1UnixLabels.rename30rename ~src ~dst ! changes the name of a file from #src$ to #dst 3, moving it between directories if needed. If #dst A already exists, its contents will be replaced with those of #src W. Depending on the operating system, the metadata (permissions, owner, etc) of #dst 8 can either be preserved or be replaced by those of #src!.@@@@@@@@@@@@(@((@((@@@@(/UnixLabels.link36link ?follow ~src ~dst; creates a hard link named #dst6 to the file named #src!.@@@@@@@&follow4indicates whether a #src ) symlink is followed or a hardlink to #src< itself will be created. On $Unix@ # systems this is done using the )linkat(2). function. If '?follow> is not provided, then the 'link(2) P function is used whose behaviour is OS-dependent, but more widely available.@@&ENOSYS#On $Unix@$ if )~follow:_ : is requested, but linkat is unavailable.@&ENOSYS#On 'Windows@$ if -~follow:false. is requested.@@@@@(@((搠USQOMK@IGECA?=@((@((@@@@(ޠ3UnixLabels.realpath3*realpath p= is an absolute pathname for !p % obtained by resolving all extra !/ 7 characters, relative path segments and symbolic links.@@@@$4.13@@@@@@@(@ (@@@@(頙A@>File permissions and ownership@@#Operations on file descriptors@@.UnixLabels.dup3 ZReturn a new file descriptor referencing the same file as the given descriptor. See ߐD@: for documentation on the 'cloexec6 optional argument.@@@@@@@@@@@@(@((@ (@@@@(/UnixLabels.dup23.dup2 ~src ~dst, duplicates #src$ to #dst*, closing #dst> if already opened. See D@: for documentation on the 'cloexec6 optional argument.@@@@@@@@@@@@(@((@((@((@@@@(7UnixLabels.set_nonblock3 Set the ``non-blocking'' flag on the given descriptor. When the non-blocking flag is set, reading on a descriptor on which there is temporarily no data available raises the &EAGAIN$ or +EWOULDBLOCK x error instead of blocking; writing on a descriptor on which there is temporarily no room for writing also raises &EAGAIN$ or +EWOULDBLOCK!.@@@@@@@@@@@@(@ '(@@@@(9UnixLabels.clear_nonblock3 @Clear the ``non-blocking'' flag on the given descriptor. See 0D@!.@@@@@@@@@@@@(@ <(@@@@(f3 Set the ``close-on-exec'' flag on the given descriptor. A descriptor with the close-on-exec flag is automatically closed when the current process starts another program with one of the $exec", .create_process% and ,open_process+ functions.@  It is often a security hole to leak file descriptors opened on, say, a private file to an external program: the program, then, gets access to the private file and can do bad things with it. Hence, it is highly recommended to set all file descriptors ``close-on-exec'', except in the very few cases where a file descriptor actually needs to be transmitted to another program.@ p The best way to set a file descriptor ``close-on-exec'' is to create it in this state. To this end, the (openfile1 function has )O_CLOEXEC% and *O_KEEPEXEC flags to enforce ``close-on-exec'' mode or ``keep-on-exec'' mode, respectively. All other operations in the Unix module that create file descriptors have an optional argument -?cloexec:bool g to indicate whether the file descriptor should be created in ``close-on-exec'' mode (by writing -~cloexec:true -) or in ``keep-on-exec'' mode (by writing .~cloexec:false d). For historical reasons, the default file descriptor creation mode is ``keep-on-exec'', if no 'cloexec p optional argument is given. This is not a safe default, hence it is highly recommended to pass explicit 'cloexec 9 arguments to operations that create file descriptors.@( The 'cloexec< optional arguments and the *O_KEEPEXEC flag were introduced in OCaml 4.05. Earlier, the common practice was to create file descriptors in the default, ``keep-on-exec'' mode, then call 1set_close_on_exec  on those freshly-created file descriptors. This is not as safe as creating the file descriptor in ``close-on-exec'' mode because, in multithreaded programs, a window of vulnerability exists between the time when the file descriptor is created and the time 1set_close_on_exec completes. If another thread spawns another program during this window, the descriptor will leak, as it is still in the ``keep-on-exec'' mode.@ 0 Regarding the atomicity guarantees given by -~cloexec:true9 or by the use of the )O_CLOEXEC  flag: on all platforms it is guaranteed that a concurrently-executing Caml thread cannot leak the descriptor by starting a new process. On Linux, this guarantee extends to concurrently-executing C threads. As of Feb 2017, other operating systems lack the necessary system calls and still expose a window of vulnerability during which a C thread can see the newly-created file descriptor in ``keep-on-exec'' mode.@@@@@@@@@@@@)4@ )5@@@@)*>UnixLabels.clear_close_on_exec3 AClear the ``close-on-exec'' flag on the given descriptor. See D@!.@@@@@@@@@@@@)1@ )2@@@@)'A@+Directories@@0UnixLabels.mkdir3 3Create a directory with the given permissions (see ܐD@").@@@@@@@@@@@@)5@ )6@)1)0@@@@)%0UnixLabels.rmdir3:Remove an empty directory.@@@@@@@@@@@@)&@ )'@@@@)0UnixLabels.chdir3 %Change the process working directory.@@@@@@@@@@@@) @ )!@@@@)1UnixLabels.getcwd3 1Return the name of the current working directory.@@@@@@@@@@@@)@ !)@@@@)1UnixLabels.chroot3 "Change the process root directory.@@@@@@@@0Invalid_argument*on Windows@@@@@)@ 6)@@@@)#5UnixLabels.dir_handle3 0The type of descriptors over opened directories.@@@@@@@@@@@@@@A)@))@@2UnixLabels.opendir3 Open a descriptor on a directory@@@@@@@@@@@@)@ T)@@@@)2UnixLabels.readdir3 %Return the next entry in a directory.@@@@@@@@+End_of_file /when the end of the directory has been reached.@@@@@)@ i)@@@@)4UnixLabels.rewinddir3 ;Reposition the descriptor to the beginning of the directory@@@@@@@@@@@@)@ x)@@@@(3UnixLabels.closedir3=Close a directory descriptor.@@@@@@@@@@@@(@ (@@@@(򠙠A@6Pipes and redirections@@/UnixLabels.pipe3 Create a pipe. The first component of the result is opened for reading, that's the exit to the pipe. The second component is opened for writing, that's the entrance to the pipe. See  D@: for documentation on the 'cloexec6 optional argument.@@@@@@@@@@@@)@))@ (@@@@(䠕1UnixLabels.mkfifo3 4Create a named pipe with the given permissions (see  D@").@@@@@@@@0Invalid_argument*on Windows@@@@@(@ (@((@@@@(᠙A@ -High-level process and redirection management@@ 03 1create_process ~prog ~args ~stdin ~stdout ~stderr = creates a new process that executes the program in file $prog1, with arguments $args $. Note that the first argument, (args.(0) M, is by convention the filename of the program being executed, just like ,Sys.argv.(0) . The pid of the new process is returned immediately; the new process executes concurrently with the current process. The standard input and outputs of the new process are connected to the descriptors %stdin&, &stdout% and &stderr0. Passing e.g. +Unix.stdout@@% for &stdout prevents the redirection and causes the new process to have the same standard output as the current process. The executable file $prog c is searched in the path. The new process has the same environment as the current process.@@@@@@@@@@@@)'@)')&@)!) @))@) ) @))@@@@(=UnixLabels.create_process_env3 :create_process_env ~prog ~args ~env ~stdin ~stdout ~stderr- works as  D@ $, except that the extra argument #env 1 specifies the environment passed to the program.@@@@@@@@@@@@)@))@))@((@((@((@((@@@@(ˠ:UnixLabels.open_process_in3  High-level pipe and process management. This function runs the given command in parallel with the program. The standard output of the command is redirected to a pipe, which can be read via the returned input channel. The command is interpreted by the shell '/bin/sh( (or 'cmd.exe2 on Windows), cf.  D@). The 6Filename.quote_command@@ function can be used to quote the command and its arguments as appropriate for the shell being used. If the command does not need to be run through the shell, ?UnixLabels.open_process_args_inD@ C can be used as a more robust and more efficient alternative to (D@!.@@@@@@@@@@@@(@(@@@@(砕;UnixLabels.open_process_out3(Same as =D@ , but redirect the standard input of the command to a pipe. Data written to the returned output channel is sent to the standard input of the command. Warning: writes on output channels are buffered, hence be careful to call ,Stdlib.flush@@ z at the right times to ensure correct synchronization. If the command does not need to be run through the shell,  UnixLabels.open_process_args_outD@; can be used instead of D@!.@@@@@@@@@@@@)@)@@@@(7UnixLabels.open_process3(Same as 1D@ 7, but redirects both the standard input and standard output of the command to pipes connected to the two returned channels. The input channel is connected to the output of the command, and the output channel to the input of the command. If the command does not need to be run through the shell, . The region starts at the current read/write position for "fd, (as set by  >D@/), and extends #len5 bytes forward if #len. is positive, #len4 bytes backwards if #len . is negative, or to the end of the file if #len is zero. A write lock prevents any other process from acquiring a read or write lock on the region. A read lock prevents any other process from acquiring a write lock on the region, but lets other processes acquire read locks on it.@( The &F_LOCK% and 'F_TLOCK J commands attempts to put a write lock on the specified region. The 'F_RLOCK% and (F_TRLOCK commands attempts to put a read lock on the specified region. If one or several locks put by another process prevent the current process from acquiring the lock, &F_LOCK% and 'F_RLOCK / block until these locks are removed, while 'F_TLOCK% and (F_TRLOCK / fail immediately with an exception. The 'F_ULOCK \ removes whatever locks the current process has on the specified region. Finally, the &F_TEST command tests whether a write lock can be acquired on the specified region, without actually putting a lock. It returns immediately if successful, or fails otherwise.@ D What happens when a process tries to lock a region of a file that is already locked by the same process depends on the OS. On POSIX-compliant systems, the second lock operation succeeds and may "promote" the older lock from read lock to write lock. On Windows, the second lock operation will block or fail.@@@@@@@@@@@@(@!(@((@((@@@@(᠙A@'Signals@ L Note: installation of signal handlers is performed via the functions *Sys.signal@@% and .Sys.set_signal@@!.@/UnixLabels.kill31kill ~pid ~signal5 sends signal number &signal; to the process with id #pid!.@9 On Windows: only the +Sys.sigkill@@ H signal is emulated, causing the receiving process to exit with code 5ERROR_PROCESS_ABORTED G (1067). Before OCaml 5.5, the receiving process exited with code 0.@@@@@@@@@@@@)@))@))@@@@)#>UnixLabels.sigprocmask_command@@(@@@(@@@(@@@@A(@((@@6UnixLabels.sigprocmask36sigprocmask ~mode sigs + changes the set of blocked signals. If $mode$ is +SIG_SETMASK 2, blocked signals are set to those in the list $sigs(. If $mode$ is )SIG_BLOCK1, the signals in $sigs 3 are added to the set of blocked signals. If $mode$ is +SIG_UNBLOCK1, the signals in $sigs 4 are removed from the set of blocked signals. +sigprocmask / returns the set of previously blocked signals.@ * Each domain, and each thread when the &Thread 0 module is loaded, has its own signal mask. +sigprocmask B only changes the mask of the current domain or current thread.@@@@@@@@0Invalid_argument 3on Windows (no inter-process signals on Windows)@@@@@)?@)?)>@)7@@@@)5UnixLabels.sigpending3 =Return the set of blocked signals that are currently pending.@@@@@@@@0Invalid_argument 3on Windows (no inter-process signals on Windows)@@@@@) @)!@@@@)5UnixLabels.sigsuspend3/sigsuspend sigs ( atomically sets the blocked signals to $sigs and waits for a non-ignored, non-blocked signal to be delivered. On return, the blocked signals are reset to their initial value.@@@@@@@@0Invalid_argument 3on Windows (no inter-process signals on Windows)@@@@@)@)@@@@) 0UnixLabels.pause3 :Wait until a non-ignored, non-blocked signal is delivered.@@@@@@@@0Invalid_argument 3on Windows (no inter-process signals on Windows)@@@@@)@0)@@@@) 2UnixLabels.sigwait3,sigwait sigs , waits until one of the signals in the list $sigs becomes pending. It then removes this signal from the set of pending signals, and returns the number of this signal. Signal handlers attached to the signals in $sigs & will not be invoked. The signals $sigs . are expected to be blocked before calling 'sigwait!.@@@@#5.4@@@0Invalid_argument 3on Windows (no inter-process signals on Windows)@@@@@)0@b)1@@@@)A@.Time functions@@#8UnixLabels.process_times3 -The execution times (CPU times) of a process.@@@@@@@@@@@@@) @@)39User time for the process@@@@@@@@@@@@)@@)3;System time for the process@@@@@@@@@@@@)@@)3 $User time for the children processes@@@@@@@@@@@@)@@)3 &System time for the children processes@@@@@@@@@@@@@A)@))@@#-UnixLabels.tm3 7The type representing wallclock time and calendar date.@@@@@@@@@@@@@) @@)3-Seconds 0..60@@@@@@@@@@@@)@@)3-Minutes 0..59@@@@@@@@@@@@(@@(3+Hours 0..23@@@@@@@@@@@@(@@(32Day of month 1..31@@@@@@@@@@@@(@@(33Month of year 0..11@@@@@@@@@@@@(@@(3+Year - 1900@@@@@@@@@@@@(@@(39Day of week (Sunday is 0)@@@@@@@@@@@@(@@(32Day of year 0..365@@@@@@@@@@@@(@@(3?Daylight time savings in effect@@@@@@@@@@@@@A(ޠ@((@@/UnixLabels.time3 HReturn the current time since 00:00:00 GMT, Jan. 1, 1970, in seconds.@@@@@@@@@@@@(@(@@@@(Ӡ7UnixLabels.gettimeofday3(Same as D@ +, but with resolution better than 1 second.@@@@@@@@@@@@(@(@@@@(Ӡ1UnixLabels.gmtime3 *Convert a time in seconds, as returned by -D@ , into a date and a time. Assumes UTC (Coordinated Universal Time), also known as GMT. To perform the inverse conversion, set the TZ environment variable to "UTC", use 1UnixLabels.mktimeD@ ,, and then restore the original value of TZ.@@@@@@@@@@@@(@1(@@@@(נ4UnixLabels.localtime3 *Convert a time in seconds, as returned by ID@ o, into a date and a time. Assumes the local time zone. The function performing the inverse conversion is D@!.@@@@@@@@@@@@(@L(@@@@(ڠ(3 *Convert a date and time, specified by the "tm 5 argument, into a time in seconds, as returned by iD@'. The (tm_isdst%, 'tm_wday% and 'tm_yday+ fields of "tm = are ignored. Also return a normalized copy of the given "tm2 record, with the 'tm_wday%, 'tm_yday&, and (tm_isdst fields recomputed from the other fields, and the other fields normalized (so that, e.g., 40 October is changed into 9 November). The "tm 3 argument is interpreted in the local time zone.@@@@@@@@@@@@)@)@@@@)0UnixLabels.alarm3+Schedule a 'SIGALRM * signal after the given number of seconds.@@@@@@@@0Invalid_argument*on Windows@@@@@)@)@@@@) 0UnixLabels.sleep3 /Stop execution for the given number of seconds.@@@@@@@@@@@@) @) @@@@)1UnixLabels.sleepf3 6Stop execution for the given number of seconds. Like %sleep -, but fractions of seconds are supported.@@@@$4.12@@@@@@@) @)@@@@)0UnixLabels.times3 *Return the execution times of the process.@ V On Windows: partially implemented, will not report timings for child processes.@@@@@@@@@@@@) @) @@@@)1UnixLabels.utimes3 Set the last access time (second arg) and last modification time (third arg) for a file. Times are expressed in seconds from 00:00:00 GMT, Jan. 1, 1970. If both times are #0.0 M, the access and last modification times are both set to the current time.@@@@@@@@@@@@)@) @))@((@@@@(#9UnixLabels.interval_timer3 #The three kinds of interval timers.@@@@@@@@@@@@@(@@3 .decrements in real time, and sends the signal 'SIGALRM8 when expired.@@@@@@@@@@@@(@@3 .decrements in process virtual time, and sends )SIGVTALRM8 when expired.@@@@@@@@@@@@)@@3 (for profiling) decrements both when the process is running and when the system is running on behalf of the process; it sends 'SIGPROF. when expired.@@@@@@@@@@@@@A) @))@@# UnixLabels.interval_timer_status3 3The type describing the status of an interval timer@@@@@@@@@@@@@)@@)3&Period@@@@@@@@@@@@)@@(3:Current value of the timer@@@@@@@@@@@@@A(@((@@4UnixLabels.getitimer3 6Return the current status of the given interval timer.@@@@@@@@0Invalid_argument*on Windows@@@@@(@})@@@@(4UnixLabels.setitimer3-setitimer t s9 sets the interval timer !t ) and returns its previous status. The !s ( argument is interpreted as follows: *s.it_value ;, if nonzero, is the time to the next timer expiration; -s.it_interval ;, if nonzero, specifies a value to be used in reloading (it_value $ when the timer expires. Setting *s.it_value ( to zero disables the timer. Setting -s.it_interval F to zero causes the timer to be disabled after its next expiration.@@@@@@@@0Invalid_argument*on Windows@@@@@)&@)'@) @@@@)A@1User id, group id@@1UnixLabels.getuid3 5Return the user id of the user executing the process.@? On Windows: always returns !1!.@@@@@@@@@@@@)$@)%@@@@)2UnixLabels.geteuid3 :Return the effective user id under which the process runs.@? On Windows: always returns !1!.@@@@@@@@@@@@)(@))@@@@)!1UnixLabels.setuid3 ;Set the real user id and effective user id for the process.@@@@@@@@0Invalid_argument*on Windows@@@@@)(@))@@@@)!1UnixLabels.getgid3 6Return the group id of the user executing the process.@? On Windows: always returns !1!.@@@@@@@@@@@@),@))-@@@@)%2UnixLabels.getegid3 ;Return the effective group id under which the process runs.@? On Windows: always returns !1!.@@@@@@@@@@@@)0@B)1@@@@))1UnixLabels.setgid3 =Set the real group id and effective group id for the process.@@@@@@@@0Invalid_argument*on Windows@@@@@)0@W)1@@@@))4UnixLabels.getgroups3 MReturn the list of groups to which the user executing the process belongs.@? On Windows: always returns %[|1|]!.@@@@@@@@@@@@)4@p)5@@@@)'4UnixLabels.setgroups30setgroups groups c sets the supplementary group IDs for the calling process. Appropriate privileges are required.@@@@@@@@0Invalid_argument*on Windows@@@@@)1@)2@@@@)$5UnixLabels.initgroups35initgroups user group r initializes the group access list by reading the group database /etc/group and using all groups of which $user # is a member. The additional group %group? is also added to the list.@@@@@@@@0Invalid_argument*on Windows@@@@@):@);@)7@@@@)/#7UnixLabels.passwd_entry3UnixLabels.inet_addr_of_string3 Conversion from the printable representation of an Internet address to its internal representation. The argument string consists of 4 numbers separated by periods (/XXX.YYY.ZZZ.TTT Y) for IPv4 addresses, and up to 8 numbers separated by colons for IPv6 addresses.@@@@@@@@'Failure 6when given a string that does not match these formats.@@@@@(@(@@@@(à>UnixLabels.string_of_inet_addr3 KReturn the printable representation of the given Internet address. See $D@ 7 for a description of the printable representation.@@@@@@@@@@@@(@(@@@@(8UnixLabels.inet_addr_any3 *A special IPv4 address, for use only with $bind M, representing all the Internet addresses that the host machine possesses.@@@@@@@@@@@@(@@@@(=UnixLabels.inet_addr_loopback3 6A special IPv4 address representing the host machine ()127.0.0.1").@@@@@@@@@@@@(@@@@( 9UnixLabels.inet6_addr_any3 *A special IPv6 address, for use only with $bind M, representing all the Internet addresses that the host machine possesses.@@@@@@@@@@@@(@@@@(à>UnixLabels.inet6_addr_loopback3 6A special IPv6 address representing the host machine (#::1").@@@@@@@@@@@@(@@@@(Ġ8UnixLabels.is_inet6_addr32Whether the given )inet_addr4 is an IPv6 address.@@@@$4.12@@@@@@@(@(@@@@(àA@'Sockets@@#8UnixLabels.socket_domain3 NThe type of socket domains. Not all platforms support IPv6 sockets (type (PF_INET6").@0 On Windows: 'PF_UNIX 8 supported since 4.14.0 on Windows 10 1803 and later.@@@@@@@@@@@@@(ڑ@@3+Unix domain@@@@@@@@@@@@(ڑ@@36Internet domain (IPv4)@@@@@@@@@@@@(ڑ@@36Internet domain (IPv6)@@@@@@@@@@@@@A(ܠ@((@@#6UnixLabels.socket_type3 JThe type of socket kinds, specifying the semantics of communications. .SOCK_SEQPACKET is included for completeness, but is rarely supported by the OS, and needs system calls that are not available in this library.@@@@@@@@@@@@@(ޑ@@3-Stream socket@@@@@@@@@@@@(ޑ@@3/Datagram socket@@@@@@@@@@@@(ޑ@@3*Raw socket@@@@@@@@@@@@(ޑ@@38Sequenced packets socket@@@@@@@@@@@@@A(@((@@#3UnixLabels.sockaddr3>The type of socket addresses. .ADDR_UNIX name , is a socket address in the Unix domain; $name ' is a file name in the file system. 4ADDR_INET(addr,port) 0 is a socket address in the Internet domain; $addr 0 is the Internet address of the machine, and $port4 is the port number.@@@@@@@@@@@@@((@@@(((@@@@A(ޠ@((@@1UnixLabels.socket3 Create a new socket in the given domain, and with the given kind. The third argument is the protocol type; 0 selects the default protocol for that kind of sockets. See D@: for documentation on the 'cloexec6 optional argument.@@@@@@@@@@@@(@((@((@((@((@@@@(=UnixLabels.domain_of_sockaddr3 ?Return the socket domain adequate for the given socket address.@@@@@@@@@@@@(@(@@@@(5UnixLabels.socketpair3 =Create a pair of unnamed sockets, connected together. See *D@: for documentation on the 'cloexec6 optional argument.@@@@@@@@@@@@(@((@((@((@((@@@@(1UnixLabels.accept3 Accept connections on the given socket. The returned descriptor is a socket connected to the client; the returned address is the address of the connecting client. See ND@: for documentation on the 'cloexec6 optional argument.@@@@@@@@@@@@(@((@9(@@@@(r/UnixLabels.bind3Shutdown a socket connection. -SHUTDOWN_SEND q as second argument causes reads on the other end of the connection to return an end-of-file condition. 0SHUTDOWN_RECEIVE X causes writes on the other end of the connection to return a closed pipe condition ('SIGPIPE) signal).@@@@@@@@@@@@(V@(W@(O(N@@@@(C6UnixLabels.getsockname3 'Return the address of the given socket.@@@@@@@@@@@@(D@(E@@@@(76UnixLabels.getpeername3 =Return the address of the host connected to the given socket.@@@@@@@@@@@@(8@(9@@@@(+#3UnixLabels.msg_flag3.The flags for /UnixLabels.recvD@", 3UnixLabels.recvfromD@", /UnixLabels.sendD@% and 1UnixLabels.sendtoD@!.@@@@@@@@@@@@@(G@@@(A@@@(;@@@@A(7@(1(=@@,3 %Receive data from a connected socket.@@@@@@@@@@@@(3@%(4@(,(+@(&(%@( (@((@@@@(?3 (Receive data from an unconnected socket.@@@@@@@@@@@@(@?( @((@''@''@''@@@@'ϠR3 "Send data over a connected socket.@@@@@@@@@@@@'@Y'@''@''@''@''@@@@'9UnixLabels.send_substring3(Same as $send A, but take the data from a string instead of a byte sequence.@@@@$4.02@@@@@@@'@|'@''@''@''@''@@@@'3 %Send data over an unconnected socket.@@@@@@@@@@@@'@'@'{'z@'u't@'o'n@'i'h@'Z'Y@@@@'N;UnixLabels.sendto_substring3(Same as &sendto A, but take the data from a string instead of a byte sequence.@@@@$4.02@@@@@@@'W@'X@'P'O@'J'I@'D'C@'>'=@'0@@@@'%A@.Socket options@@#=UnixLabels.socket_bool_option3 .The socket options that can be consulted with 5UnixLabels.getsockoptD@6 and modified with 5UnixLabels.setsockoptD@ $. These options have a boolean ($true!/%false() value.@@@@@@@@@@@@@'F@@3Leave out-of-band data in line@@@@@@@@@@@@'F@@3 *Report whether socket listening is enabled@@@@@@@@@@@@'F@@3 +Control the Nagle algorithm for TCP sockets@@@@@@@@@@@@'F@@3 0Forbid binding an IPv6 socket to an IPv4 address@@@@@@@@@@@@'F@@3 )Allow reuse of address and port bindings.@@@@%4.12.@@@@@@@@A'J@'D'P@@#UnixLabels.socket_float_option3 .The socket options that can be consulted with ;UnixLabels.getsockopt_floatD@6 and modified with ;UnixLabels.setsockopt_floatD@ v. These options have a floating-point value representing a time in seconds. The value 0 means infinite timeout.@@@@@@@@@@@@@'i@@33 LReturn the current status of a boolean-valued option in the given socket.@@@@@@@@@@@@'g@''h@*'a@@@@'VH3 9Set or clear a boolean-valued option in the given socket.@@@@@@@@@@@@'V@8'W@;'P@>'I@@@@'Aݐ3(Same as kD@ % for an integer-valued socket option.@@@@@@@@@@@@'G@R'H@U'A@@@@'63(Same as {D@ % for an integer-valued socket option.@@@@@@@@@@@@'<@i'=@l'6@o'/@@@@''3(Same as D@ + for a socket option whose value is an *int option!.@@@@@@@@@@@@'3@'4@'-@@@@'Ɛ3(Same as D@ + for a socket option whose value is an *int option!.@@@@@@@@@@@@')@'*@'#@'@@@@'3(Same as ِD@ @ for a socket option whose value is a floating-point number.@@@@@@@@@@@@'@'@'@@@@'ʐ3(Same as D@ @ for a socket option whose value is a floating-point number.@@@@@@@@@@@@' @' @'@&@@@@&R3 NReturn the error condition associated with the given socket, and clear it.@@@@@@@@@@@@&@&@@@@&㠙A@ 'High-level network connection functions@@:UnixLabels.open_connection3 }Connect to a server at the given address. Return a pair of buffered channels connected to the server. Remember to call ,Stdlib.flush@@ O on the output channel at the right times to ensure correct synchronization.@ ! The two channels returned by /open_connection ` share a descriptor to a socket. Therefore, when the connection is over, you should call 0Stdlib.close_out@@ U on the output channel, which will also close the underlying socket. Do not call /Stdlib.close_in@@ D on the input channel; it will be collected by the GC eventually.@@@@@@@@@@@@'@'@@@@&정>UnixLabels.shutdown_connection3 ,``Shut down'' a connection established with 4D@ ; that is, transmit an end-of-file condition to the server reading on the other side of the connection. This does not close the socket and the channels used by the connection. See 4Unix.open_connection@@ 6 for how to close them once the connection is over.@@@@@@@@@@@@&@8&@@@@&;UnixLabels.establish_server3 Establish a server on the given address. The function given as first argument is called for each connection with two buffered channels connected to the client. A new process is created for each connection. The function  D@; never returns normally.@  The two channels given to the function share a descriptor to a socket. The function does not need to close the channels, since this occurs automatically when the function returns. If the function prefers explicit closing, it should close the output channel using 0Stdlib.close_out@@ C and leave the input channel unclosed, for reasons explained in 8Unix.in_channel_of_descr@@!.@@@@@@@@0Invalid_argument on Windows. Use threads instead.@@@@@' @c' @&&@@@@&蠙A@;Host and protocol databases@@#5UnixLabels.host_entry3@@#=UnixLabels.getaddrinfo_option3+Options to ?D@!.@@@@@@@@@@@@@&F&E@@3>Impose the given socket domain@@@@@@@@@@@@&>&=@@3Name of service or port number@@@@@@@@@@@@@A&S@&M&L@@#=UnixLabels.getnameinfo_option3+Options to 'D@!.@@@@@@@@@@@@@&T@@3?Do not qualify local host names@@@@@@@@@@@@&T@@3 Always return host as IP address@@@@@@@@@@@@&T@@3 &Fail if host name cannot be determined@@@@@@@@@@@@&T@@3 $Always return service as port number@@@@@@@@@@@@&T@@3 YConsider the service as UDP-based instead of the default TCP@@@@@@@@@@@@@A&V@&P&\@@a35getnameinfo addr opts P returns the host name and service name corresponding to the socket address $addr#. $opts S is a possibly empty list of options that governs how these names are obtained.@@@@@@@@)Not_found3if an error occurs.@@@@@&g@&h@&a@@@@&MA@2Terminal interface@@ The following functions implement the POSIX standard terminal interface. They provide control over asynchronous communication ports and pseudo-terminals. Refer to the 'termios ( man page for a complete description.@#6UnixLabels.terminal_io@@&YA@&X3;Ignore the break condition.@@@@@@@@@@@@&TA@&S3 $Signal interrupt on break condition.@@@@@@@@@@@@&OA@&N3 %Ignore characters with parity errors.@@@@@@@@@@@@&JA@&I33Mark parity errors.@@@@@@@@@@@@&EA@&D3=Enable parity check on input.@@@@@@@@@@@@&@A@&?3 "Strip 8th bit on input characters.@@@@@@@@@@@@&;A@&:36Map NL to CR on input.@@@@@@@@@@@@&6A@&533Ignore CR on input.@@@@@@@@@@@@&1A@&036Map CR to NL on input.@@@@@@@@@@@@&,A@&+3 'Recognize XON/XOFF characters on input.@@@@@@@@@@@@&'A@&&3 *Emit XON/XOFF chars to control input flow.@@@@@@@@@@@@&"A@&!39Enable output processing.@@@@@@@@@@@@&A@&3 ,Output baud rate (0 means close connection).@@@@@@@@@@@@&A@&30Input baud rate.@@@@@@@@@@@@&A@&3 #Number of bits per character (5-8).@@@@@@@@@@@@&A@& 3:Number of stop bits (1-2).@@@@@@@@@@@@& A@&35Reception is enabled.@@@@@@@@@@@@&A@&3 'Enable parity generation and detection.@@@@@@@@@@@@%A@%3 #Specify odd parity instead of even.@@@@@@@@@@@@%A@%36Hang up on last close.@@@@@@@@@@@@%A@%3:Ignore modem status lines.@@@@@@@@@@@@%A@%3 $Generate signal on INTR, QUIT, SUSP.@@@@@@@@@@@@%A@%3 YEnable canonical processing (line buffering and editing)@@@@@@@@@@@@%A@%3 %Disable flush after INTR, QUIT, SUSP.@@@@@@@@@@@@%A@%36Echo input characters.@@@@@@@@@@@@%A@%ې3 )Echo ERASE (to erase previous character).@@@@@@@@@@@@%A@%֐3 &Echo KILL (to erase the current line).@@@@@@@@@@@@%A@%ѐ3 "Echo NL even if c_echo is not set.@@@@@@@@@@@@%A@%̐3 %Interrupt character (usually ctrl-C).@@@@@@@@@@@@%A@%Ɛ3 Quit character (usually ctrl-\).@@@@@@@@@@@@%A@%3 (Erase character (usually DEL or ctrl-H).@@@@@@@@@@@@%A@%3 %Kill line character (usually ctrl-U).@@@@@@@@@@@@%A@%3 'End-of-file character (usually ctrl-D).@@@@@@@@@@@@%A@%3 +Alternate end-of-line char. (usually none).@@@@@@@@@@@@%A@%3 kMinimum number of characters to read before the read request is satisfied.@@@@@@@@@@@@%A@%3 "Maximum read wait (in 0.1s units).@@@@@@@@@@@@%A@%3 !Start character (usually ctrl-Q).@@@@@@@@@@@@%A@%3 Stop character (usually ctrl-S).@@@@@@@@@@@@@A%@%%@@4UnixLabels.tcgetattr3 NReturn the status of the terminal referred to by the given file descriptor.@@@@@@@@0Invalid_argument*on Windows@@@@@%@!U%@@@@%#7UnixLabels.setattr_when@@%@@@%@@@%@@@@A%{@%u%@@4UnixLabels.tcsetattr3 Set the status of the terminal referred to by the given file descriptor. The second argument indicates when the status change takes place: immediately ('TCSANOW 4), when all pending output has been transmitted ()TCSADRAIN J), or after flushing all input that has been received but not read ()TCSAFLUSH#). )TCSADRAIN 8 is recommended when changing the output parameters; )TCSAFLUSH (, when changing the input parameters.@@@@@@@@0Invalid_argument*on Windows@@@@@%@!%@%%@!%@@@@%6UnixLabels.tcsendbreak3 Send a break condition on the given file descriptor. The second argument is the duration of the break, in 0.1s units; 0 means standard duration (0.25s).@@@@@@@@0Invalid_argument*on Windows@@@@@%@!%@%%@@@@%y2UnixLabels.tcdrain3 TWaits until all output written on the given file descriptor has been transmitted.@@@@@@@@0Invalid_argument*on Windows@@@@@%@!%@@@@%v#6UnixLabels.flush_queue@@%p@@@%j@@@%d@@@@A%`@%Z%f@@2UnixLabels.tcflush3 Discard data written on the given file descriptor but not yet transmitted, or data received but not yet read, depending on the second argument: (TCIFLUSH ( flushes data received but not read, (TCOFLUSH 2 flushes data written but not transmitted, and )TCIOFLUSH. flushes both.@@@@@@@@0Invalid_argument*on Windows@@@@@%u@"%v@%n%m@@@@%b#6UnixLabels.flow_action@@%\@@@%V@@@%P@@@%J@@@@A%F@%@%L@@1UnixLabels.tcflow3 {Suspend or restart reception or transmission of data on the given file descriptor, depending on the second argument: &TCOOFF2 suspends output, %TCOON5 restarts output, &TCIOFF 5 transmits a STOP character to suspend input, and %TCION . transmits a START character to restart input.@@@@@@@@0Invalid_argument*on Windows@@@@@%a@"N%b@%Z%Y@@@@%N1UnixLabels.setsid3 XPut the calling process in a new session and detach it from its controlling terminal.@@@@@@@@0Invalid_argument*on Windows@@@@@%U@"f%V@@@@%N@@%@@A$Unix#Sys&Stdlib(Bigarray@@@@@