Get_the degree_you need to_succeed This document is distributed under the terms of the GNU Free Documentation long mycall(int i) electronic equivalent of covers if the Document is in electronic form. ppp/options.ttyS1 on the local system would be: 10.1.1.1:192.168.1.1 3. PPPD 2.2. Test 5. syscall_table.S for automatic translation to a variety of formats suitable for input ASCII without markup, Texinfo input format, LaTeX input format, SGML OFF Dumb mode from that of the Document, and from those of previous versions 1. _syscall0(int,mycall) indicates that: common mistake is to configure the modems with Minicom using one speed and /PPP-HOWTO/index.html] Linux PPP HOWTO if necessary. Since you are not going But the definition of _syscallN macros are different in the kernel. You can of any later version that has been published (not as a draft) by the "Dedications", "Endorsements", or "History".) To "Preserve the Title" ATL1&C1&D3&L2%D1&W&W1 if ! ( netstat -an | grep 'My_Ip_Address:53' > /dev/null 2>&1 ) mtu 576 ----------------------------------------------------------------------------- New user space files, to be created, to test our system call are listed combination of the three, merge those two alternatives to suit the This file contain the declarations for system calls. 4. MODIFICATIONS PPP_REMOTE="$5" ATM0B15M0Q1&C1&D3&L2S0=1&W&W1 B. List on the Title Page, as authors, one or more persons or entities profile. Unlike most other modems it has three; &F0, &F1 and &F2. The O. Preserve any Warranty Disclaimers. Escaped email address New net howto link Opaque copy (directly or through your agents or retailers) of that or discourage subsequent modification by readers is not Transparent. copied from the Document, you may at your option designate some or all associated with it. This number is passed to the kernel and that's how the section does not fit the above definition of Secondary then it is not A "Modified Version" of the Document means any work containing the netfone/] Speakfreely for instance uses 512 byte UDP packets. So the minimum mru 576 2.3.1. Hi-Tech If the Modified Version includes new front-matter sections or webbrowsing) at the same time, you might want to use a smaller MTU and MRU them. * Dumb mode (\D1 or %D1, this is sometimes a jumper) In dumb mode the If you use the latter option, you must take reasonably prudent steps, Furthermore you need set it to leased line mode with &L1; ATS13=1&L1&W The Make the same adjustment to the section titles in the list of If you have Invariant Sections without Cover Texts, or some other (power off and on) while DTR is high. I designed a [http://www.sput.nl/ Permission is granted to copy, distribute and/or modify this document ----------------------------------------------------------------------------- you set bit 0 of S register 13. This means you have to set S13 to 1. #!/bin/bash a complete Transparent copy of the Document, free of added material. 8. Makefile A section "Entitled XYZ" means a named subunit of the Document whose The Makefile in dir "mycall" will have only one line: dumb mode. Make sure you actually configure your modems at the highest EAX register. The arguments of the system call are also passed to the kernel You may make a collection consisting of the Document and other documents number of copies you must also follow the conditions in section 3. 1. Create a source file named "mycall.c" in dir "mycall". mycall.c will have modem software such as minicom or (m)getty to use the highest possible speed; /*---Start of C file------*/ translation of this License, and all the license notices in the if the original publisher of that version gives permission. modem and then reestablish the link. Examples of suitable formats for Transparent copies include plain as verbatim copying in other respects. Stuff like `asyncmap 0', `lock', `modem' and `-detach' are probably already Secondarily, this License preserves for the author and publisher a way 1. APPLICABILITY AND DEFINITIONS to text formatters. A copy made in an otherwise Transparent file { ----------------------------------------------------------------------------- to high transition of DTR. The FreeBSD pppd however, isn't very happy about 3.2.1. Starting the pppd and keeping it alive work under the conditions stated herein. The "Document", below, Full path of the file - /usr/src/linux/arch/i386/kernel/syscall_table.S /sbin/route add -net 0.0.0.0 gw Rem_Ip netmask 0.0.0.0 some newer distributions. `maxfail 0' may be necessary with newer PPPDs. This file contains the system call number that is passed to the kernel Revision 2.3b5 2004-12-31 Revised by: RvdP number of this License, you may choose any version ever published (not /*---Start of mycall.c----*/ kernel knows which system call was made. When a user program issues a system the operating system. # Set the null routes 192.168.1.1:10.1.1.1 255.255.255.255 0.0.0.0 255.255.255.255 UH 0 0 0 eth1 of it. In addition, you must do these things in the Modified Version: the title of the Document and satisfy these conditions, can be treated plus such following pages as are needed to hold, legibly, the material case $PPP_LOCAL in Replacing Invariant Sections with translations requires special (or to related matters) and contains nothing that could fall directly purpose I edited /etc/ppp/ip-up; Revision 2.3b7 2005-09-05 Revised by: RvdP Some systems use dynamic ttys, in which case you can't route on a tty basis. author or publisher of that section if known, or else a unique number. case $2 in Preserve the Title of the section, and preserve in the section all 18. Questions And Suggestions /*---Start of header file------*/ 3. COPYING IN QUANTITY that this Transparent copy will remain thus accessible at the stated Z-modem file transfers of both ASCII text and binary files. Only if all of processors for output purposes only. necessary disable the ESC character. Invariant Sections. If the Document does not identify any Invariant Full path of the file - /usr/src/linux/Makefile 1. Introduction Leased line Mini HOWTO You should have 2 identical (including firmware version) external modems the remote IP address is `Rem_Ip'. We want to use 576 as our MTU. The /etc/ would with a null modem cable. it was based on. These may be placed in the "History" section. If the Cover Text requirement of section 3 is applicable to these 2. /usr/src/linux/mycall/mycall.c - Source file containing our system call the entire aggregate, the Document's Cover Texts may be placed on 2.3.2. Tornado FM 228 E S-register by the AT&W command). This document does NOT deal with: 5. It returns an int. following the terms and conditions either of that specified version or Now configure your modem as follows; 1st LinuxDoc SGML version A note on modem configuration and init strings in general: Configure your * 8 Bits, no parity, 1 stopbit -pap C. State on the Title page the name of the publisher of the way you can swap or upgrade your modems without ever having to reconfigure If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, of text. A copy that is not "Transparent" is called "Opaque". system call is used by application (user) programs to request service from Sections then there are none. The most recent (beta) version of this HOWTO can be found at: [http:// with or without modifying it, either commercially or noncommercially. 1.1. Copyright and License mtu 576 other respects regarding verbatim copying of that document. list of Invariant Sections in the Modified Version's license notice. The options.ttyS1 on the remote system would be: * Disable result codes (Q1, sometimes the dumb mode does this for you) case $2 in which can not be controlled or monitored by your pppd. 2. System call Full path of the file - /usr/src/linux/include/asm-i386/unistd.h License will not have their licenses terminated so long as such modem a computer-network location from which the general network-using line. 1. Add "#define __NR_mycall " at the end of the * Shortly after booting your system, pppd should raise the DTR signal in The "Invariant Sections" are certain Secondary Sections whose titles The default route can be set with the defaultroute option or with the /etc/ This is what should work; the sound at the remote modem (M0) and put the local modem at low volume ----------------------------------------------------------------------------- #!/bin/bash route add -net 10.0.0.0 netmask 255.0.0.0 reject F, however it will load the factory profile &F0! For the reset on DTR toggle #maxfail 0 Additional PPPD options and routing multiple identical Invariant Sections may be replaced with a single code. # These variables are for the use of the scripts run by run-parts #####Makefile Start##### ----------------------------------------------------------------------------- License, but only as regards disclaiming warranties: any other ----------------------------------------------------------------------------- baseband modems, xDSL. first place. The smart thing to do is probably to use AT&F only when you have For a reliable link, your setup should meet the following criteria; under the terms of the GNU Free Documentation License, Version 1.2 conditions whatsoever to those of this License. You may not use 3.2. Scripts This file contains system call names. 192.168.0.0 - 255.255.0.0 ! 0 - 0 - by arrangement made by the same entity you are acting on behalf of, Move the dumb jumper from position 2-3 to 1-2. dip switches are all default except for the following: 2. Modem there is no section Entitled "History" in the Document, create one within that overall subject. (Thus, if the Document is in part a #holdoff 10 Test the whole thing just like the modem test. If it works, get on your bike New author email address Copyright (C) 2000,2001,2002 Free Software Foundation, Inc. This document explains how to implement a new system call on linux 2.6. A route add -net 192.168.0.0 netmask 255.255.0.0 reject /sbin/route add -net 0.0.0.0 gw $PPP_REMOTE netmask 0.0.0.0 more than 100, you must either include a machine-readable Transparent with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. ON For originate, OFF For answer your RS232 port, wait for DCD to go up, and negotiate the link. publisher of the version it refers to gives permission. been approved by an organization as the authoritative definition of a Full path of the file - /usr/src/linux/mycall/Makefile legibly, you should put the first ones listed (as many as fit the code for our system call. The definition of the system call in the What is asmlinkage? `-detach' option (nodetach on newer systems) though, otherwise inittab will /*---End of C file------*/ automatically terminate your rights under this License. However, it individually under this License, provided you insert a copy of this look at /usr/src/linux/include/asm-i386/unistd.h for the definition. copy, modify, sublicense or distribute the Document is void, and will the text near the most prominent appearance of the work's title, verbatim copying of each of the documents in all other respects. copy. If there are multiple Invariant Sections with the same name but include the file linux/linkage.h So, the file "mycall.c" will look like: under the terms of the GNU Free Documentation License, Version 1.2 1. /usr/src/linux/arch/i386/kernel/syscall_table.S # Rerun firewall. printed covers) of the Document, numbering more than 100, and the Document or a portion of it, either copied verbatim, or with implication that these Warranty Disclaimers may have is void and has format whose markup, or absence of markup, has been arranged to thwart 12. Makefile Invariant Sections in the license notice of the combined work. 3.1. Configuration passive This document deals with: In this case it might be handy to translate the ip address to a ppp interface such as 296. This will make the remote system more responsive. If you don't given on its Title Page, then add an item describing the Modified The USR Sportster and USR Courier-I do not support leased line. You need the ----------------------------------------------------------------------------- looks like this; free software license, such as the GNU General Public License, the translation and the original version of this License or a notice # Take care of the (default) route(s) Each version of the License is given a distinguishing version number. ----------------------------------------------------------------------------- ----------------------------------------------------------------------------- You may extract a single document from such a collection, and distribute Revision 2.1 2000-08-03 Revised by: RvdP remote system sets the route to your network. If your network is 192.168.1.0 PPP_SPEED="$3" * Leased line mode (&L1 or &L2, consult your modem documentation) 15. testmycall.c (new user space source file to be created) the information. This request is made by using an appropriate system call. If the last system call defined here is: then crtscts The ESC char should be disabled by setting S2 > 127; permission from the previous publisher that added the old one. Revision 2.3b6 2005-01-19 Revised by: RvdP fi crtscts /*---End of header file--------*/ -chap Ip-up can also be used to sync your clock using netdate. # Bind 9 needs this; A system call is used by application (user) programs to request service from parties remain in full compliance. or any later version published by the Free Software Foundation; and any sections Entitled "Dedications". You must delete all sections whether it is published as a printed book. We recommend this License When you expand _syscall1(long,mycall,int,i), you get the following code: It is requested, but not required, that you contact the authors of the 3.3. Test as expressly provided for under this License. Any other attempt to 2005-09-05 persist This is a rather vague `no name clone modem'. Its config string is however 1.3. Assumptions this works perfectly should you configure your modems for leased line. PPP_TTY="$2" testmycall.c option will keep pppd alive in case of a disconnect or when it can't connect Kernel IP routing table another mechanism (e.g., copy_to_user call). technical measures to obstruct or control the reading or further programs. But often, a user program requires some information from the 1. testmycall.c – Source file that will call our system call. list. distribution medium, is called an "aggregate" if the copyright esac 10. mycall char as well). * 2 fully wired shielded RS232 cables. The shield should be connected to Suppose the modem is connected to COM2, the local IP address is `Loc_Ip' and reestablish itself. Disconnect and reconnect the RS232 cables, switch the #holdoff 10 If the required texts for either cover are too voluminous to fit 9. TERMINATION If all of this works you may want to reconfigure your modems; Switch off This way, the pppd will be restarted if it dies. Make sure you have a appendices that qualify as Secondary Sections and contain no material hardware/modem-reset.html#l2h] circuit which hard resets the modem on the low Front-Cover Text and one of Back-Cover Text may be added by (or modifications and/or translated into another language. A. Use in the Title Page (and on the covers, if any) a title distinct The "Title Page" means, for a printed book, the title page itself, When the Document is included in an aggregate, this License does not versions, provided that you include in the combination all of the Full path of the file - /usr/src/linux/include/linux/syscalls.h 195.190.249.4 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 E. Add an appropriate copyright notice for your modifications you will have to set the speed to 38400 and set the `spd_vhi' flag with This time can be set with the holdoff option. The default holdoff used to be 2.6.17.13. header file and the Makefile for our system call (You can also implement your replace the "with...Texts." line with this: ----------------------------------------------------------------------------- passage of up to 25 words as a Back-Cover Text, to the end of the list #define __NR_mycall 317 1. Introduction drawing editor, and that is suitable for input to text formatters or You could start the pppd form a boot (rc) script. However, if you do this, null routes; recommend releasing these examples in parallel under your choice of 20. License } is required by some ISP's! You may copy and distribute a Modified Version of the Document under * The remote modem auto answer (S0=1), the local originate (S0=0) you as the publisher of these copies. The front cover must present of other hardware such as (pupin) coils, transformers, amplifiers and mru 576 that says that the Document is released under this License. If a D. Preserve all the copyright notices of the Document. 1. Add a line to the end of this file (Let's assume that the name of our -chap Note: Some older systems will not accept the speed `115200'. In this case contains a notice placed by the copyright holder saying it can be Version as stated in the previous sentence. processing tools are not generally available, and the ----------------------------------------------------------------------------- the speed at which it was configured instead (this speed is stored in a 3. List of files to be modified/created K. For any section Entitled "Acknowledgements" or "Dedications", In the combination, you must combine any sections Entitled "History" 3.1. Configuration through arrangements made by) any one entity. If the Document already aggregate. s1:23:respawn:/usr/sbin/pppd /dev/ttyS1 115200 differ in detail to address new problems or concerns. See A compilation of the Document or its derivatives with other separate the same speed all of the time! ADDENDUM: How to use this License for your documents care much about telnetting during FTP, you could set the MTU and MRU to 1500. proprietary word processors, SGML or XML for which the DTD and/or hardware (e.g., from a web camera to show you the picture), but it cannot get Originate: 3.2. Scripts ----------------------------------------------------------------------------- reasonably) on the actual cover, and continue the rest onto adjacent #maxfail 0 and required Cover Texts given in the Document's license notice. 2.3. Examples return i+10; ;; #noauth ----------------------------------------------------------------------------- are on their own and have to be able to deal with this situation. If you publish or distribute Opaque copies of the Document numbering this License requires to appear in the title page. For works in include proprietary formats that can be read and edited only by passive Texts. A copy of the license is included in the section entitled "GNU or any later version published by the Free Software Foundation; 16. _syscallN macro Configuring your modem and pppd to use a 2 wire twisted pair leased line. 6. COLLECTIONS OF DOCUMENTS of the GNU Free Documentation License from time to time. Such new 1. Step 1: Recompile and install the new kernel so that our system call * 2 RJ11 cords, one for each end of the leased line. license notices just after the title page: ppp/options.ttyS1 would now be: N. Do not retitle any existing section to be Entitled "Endorsements" * If the link is up and then goes down, pppd should reset the modem (it 30 seconds, but is now zero. A holdoff of 10 is often recommended. Destination Gateway Genmask Flags Metric Ref Use Iface to it an item stating at least the title, year, new authors, and Kernel files to be modified are listed below: HTML, PostScript or PDF designed for human modification. Examples of echo $PPP_IFACE > "/var/run/ppp/if-$PPP_LOCAL" A system call executes in the kernel mode. Every system call has a number Version, together with at least five of the principal authors of the the conditions of sections 2 and 3 above, provided that you release ----------------------------------------------------------------------------- unaltered in their text and in their titles. Section numbers 1st experimental DocBook version transparent image formats include PNG, XCF and JPG. Opaque formats ----------------------------------------------------------------------------- 17. Testing our new system call to permit their use in free software. Now connect the modems to 2 computers using the RS232 cables and connect the M. Delete any section Entitled "Endorsements". Such a section mtu 576 /*---End of mycall.c------*/ principally for works whose purpose is instruction or reference. the network locations given in the Document for previous versions #include "testmycall.h" 2.3.4. US Robotics Courier V-Everything the screen produces garbage check your COM port speed and other settings. Now } 1. Line 3: This is needed for system calls with 1 argument. It is explained * Reset on DTR toggle (&D3, this is sometimes a S register). This setting www.sput.nl/software/leased-line/] http://www.sput.nl/software/leased-line/ 1. Increment the "NR_syscalls" by 1. So, if NR_syscalls is defined as: start the pppd from /etc/inittab; system call is mycall). and bring the remote modem to the remote side of your link. If it doesn't 2.1. Modem Configuration * Hardware bidirectional RTS-CTS flow control (no x-on/x-off) the Document that deals exclusively with the relationship of the work, one of the things you should check is the COM port speed; Apparently, a #holdoff 10 7. syscalls.h the Document is released under this License. A Front-Cover Text may typical and should work on most modems. This License applies to any manual or other work, in any medium, that ----------------------------------------------------------------------------- Revision 2.3b3 2002-09-19 Revised by: RvdP 2. Step 2: Compile and execute the user space C file (testmycall.c) that we _syscall1(long, mycall, int, i) the back cover. Both covers must also clearly and legibly identify instruction. It also passes the system call number to the kernel using the under copyright law. { and configuration you have just build, are rather like a fully wired null Invariant Sections of all of the original documents, unmodified, and 7. AGGREGATION WITH INDEPENDENT WORKS ;; with the Invariant Sections being LIST THEIR TITLES, with the Copyright (c) 2006 by Amit Choudhary. To use this License in a document you have written, include a copy of translations of some or all Invariant Sections in addition to the visible. You may add other material on the covers in addition. ppp/ip-up script; * A basic understanding of `AT' commands. 1.1. Copyright and License Revision 2.3b4 2003-10-01 Revised by: RvdP ON Disable offline commands A "Secondary Section" is a named appendix or a front-matter section of and the pppd dies, you are without a link. A more stable solution, is to The USR Courier can be configured with dip switches, however you need to Answer (remote): should restart the pppd. 10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 _syscall1(long, mycall, int, i) fast'. Asmlinkage is used to look for the arguments on the kernel stack. the connector shell (not pin 1) at both ends (not at one end). distributed under the terms of this License. Such a notice grants a be at most 5 words, and a Back-Cover Text may be at most 25 words. Modified Version, as the publisher. 1. Line 2: This is needed because we need the number of our system call. ----------------------------------------------------------------------------- SLIP, getting or installing pppd, synchronous data communication, possible speed. Once in dumb mode it will ignore all `AT' commands and Check this with AT&V or AT&Ix (consult your modem documentation) GNU Free Documentation License Originate (local): modems on and off, stop and restart Minicom. The modems should always or to conflict in title with any Invariant Section. unless they release you from this requirement. of the Document). You may use the same title as a previous version when you begin distribution of Opaque copies in quantity, to ensure 0.0.0.0 195.190.249.4 0.0.0.0 UG 0 0 0 ppp0 ----------------------------------------------------------------------------- esac DC power, dial tone, busy tone or ring signal. This means that your modems start numerous instances of pppd, while complaining about `respawning too containing lots of modem brand and -type specific commands. This however is and your ppp interface 192.168.1.1, the ip-up script on the remote machine esac { #maxfail 0 location until at least one year after the last time you distribute an Full path of the file - /usr/src/linux/mycall resulting from the compilation is not used to limit the legal rights 13. New user space files, to be created, to test our system call OFF Disable result codes do this! Also make sure your modem is properly documented. You also need: PPP_IPPARAM="$6" through the register (EAX) when a system call is invoked. of those notices and disclaimers. In case of a disagreement between use very long and complicated init strings, often starting with AT&F and We have designed this License in order to use it for manuals for free 19. Copyright printf("%d\n", mycall(15)); are needed. An operating system can access a system's hardware directly, but distribute translations of the Document under the terms of section 4. call, it is actually calling a library routine. The library routine issues a to use a login procedure, you don't use (m)getty and you do not need a (fake) Translation is considered a kind of modification, so you may ----------------------------------------------------------------------------- # Fix things missed at boot An image format is not Transparent if used for any substantial amount Revision 2.0 2000-04-20 Revised by: RvdP covers that bracket the Document within the aggregate, or the ----------------------------------------------------------------------------- /bin/echo -ne "\007" >> /dev/tty1 the full title with all words of the title equally prominent and ----------------------------------------------------------------------------- (Linux), procom or telix (DOS) on both computers to test the modems. You versions will be similar in spirit to the present version, but may # An audiable notification includes a cover text for the same cover, previously added by you or straightforwardly with generic text editors or (for images composed of A leased line is not connected to a telephone exchange and does not provide /etc/init.d/bind9 restart testmycall.h. The C file will look like: #noauth leds). Check whether the modems actually ignores the ESC (+++) character. If Rob van der Putten "asmlinkage long sys_mycall(int i);" 2.3. Examples 1. Introduction Most programs require you to use the following settings; G. Preserve in that license notice the full lists of Invariant Sections Disclaimers are considered to be included by reference in this and modification of the Modified Version to whoever possesses a copy the substance and tone of each of the contributor acknowledgements #####Makefile End####### functional and useful document "free" in the sense of freedom: to F. Include, immediately after the copyright notices, a license notice * The modem should produce the TRUE DCD status (&C1) If you have RFC 1918 addresses in use, the above null routes won't interfere Full path of the file - /usr/src/linux/mycall/mycall.c /dev/ttyS1) textbook of mathematics, a Secondary Section may not explain any 57600 bps for 14k4 and 115200 bps for 28k8 or faster modems. Lots of people ATL1&L1Q1&C1&D3S2=171\D1&W Originate (local): copies of the Document, then if the Document is less than one half of connection with the subject or with related matters, or of legal, } 1. /usr/src/linux/mycall - Directory that will contain the source file, available from [http://www.fsf.org/licenses/fdl.html] http://www.fsf.org/ sleep 1 ----------------------------------------------------------------------------- #noauth standard. 3. /usr/src/linux/mycall/Makefile - Makefile # Just booted # Sync clock sleep 1 A "Transparent" copy of the Document means a machine-readable copy, #define __NR_mycall 317 its Title (section 1) will typically require changing the actual ip-up sets the route to the remote network while the ip-up script on the modem software, because free software needs free documentation: a free A copy of the license is included in the section entitled "GNU PPP_LOCAL="$4" ----------------------------------------------------------------------------- 172.16.0.0 - 255.240.0.0 ! 0 - 0 - Assume that your linux source base directory is /usr/src/linux. crtscts copy along with each Opaque copy, or state in or with each Opaque copy starts the NTPD again. /usr/local/sbin/null-route.sh is a script which sets ----------------------------------------------------------------------------- really screwed up. If you think you have found the right setup for your #!/bin/bash title either is precisely XYZ or contains XYZ in parentheses following `explaining' how to set-up your Courier for leased line. However, if you ----------------------------------------------------------------------------- states that this License applies to the Document. These Warranty ppp link. Ip-up will run each time a link comes up, but only the part between persist These settings are not necessarily the same as the default factory profile of these sections as invariant. To do this, add their titles to the * A RS232 test plug may be handy for test purposes. Document, and any Warranty Disclaimers, provided that you also include adjacent to the other copyright notices. license notice, and that you preserve all their Warranty Disclaimers. 4. /usr/src/linux/Makefile Otherwise they must appear on printed covers that bracket the whole feed it the config string first. First make sure it uses the right factory software does. But this License is not limited to software manuals; obj-y := mycall.o ----------------------------------------------------------------------------- Entitled "Endorsements". 2.2. Test give permission to use their names for publicity for or to assert or regenerators. 8. TRANSLATION 2. Modem #include of such a section when you modify the Document means that it remains a Keep in mind though, that UDP cannot be fragmented. [http://www.fourmilab.ch/ Copyright (c) YEAR YOUR NAME. stating the title, year, authors, and publisher of the Document as modem will ignore all AT commands (sometimes you need to disable the ESC and independent documents or works, in or on a volume of a storage or that the kernel can keep the system safe and secure from malicious user reason to believe that the modem setup stored in the non volatile memory is may not be included in the Modified Version. pixels) generic paint programs or (for drawings) some widely available `/dev/ttySx)' and `;;' will be executed, setting the right route for the ----------------------------------------------------------------------------- publisher of the Modified Version as given on the Title Page. If the local system is 192.168.1.1 and the remote system is 10.1.1.1, then /etc/ supporting both leased line and dumb mode. Make sure your modems can actually copy, modify or distribute the work in a way requiring permission or the equivalent are not considered part of the section titles. If a section in the Document is Entitled "Acknowledgements", or disclaimer, the original version will prevail. does this by dropping and then raising DTR), and then try to reconnect. to the Document are reproduced in all copies, and that you add no other or a similar program to configure your modems. You may also lend copies, under the same conditions stated above, and 2. Add ".long sys_mycall" at the end of the list. ----------------------------------------------------------------------------- of this license document, but changing it is not allowed. any of your software. allowed to be designated as Invariant. The Document may contain zero ----------------------------------------------------------------------------- 3. RESULT: You should see the output as 25. This has been tested on kernel ----------------------------------------------------------------------------- responsible for authorship of the modifications in the Modified of the compilation's users beyond what the individual works permit. refers to any such manual or work. Any member of the public is a needlessly complicated. Most programs feel happy with the same modem asmlinkage long sys_mycall(int i) compensation in exchange for copies. If you distribute a large enough represented in a format whose specification is available to the and then do the routing (and firewalling) on a ppp interface basis. For this header file and the Makefile for our system call. machine-generated HTML, PostScript or PDF produced by some word You may combine the Document with other documents released under this 3. It takes zero arguments. publishers or authors of the Document to the Document's overall subject 1.2. What is a leased line 1. Line 1: This is needed because we need the definition of _syscall1. You should already have a working pppd on your system. You also need Minicom H. Include an unaltered copy of this License. 11. mycall.c License in the various documents with a single copy that is included in You may omit a network location for a work that was published at /usr/local/sbin/rc.block with no Invariant Sections, no Front-Cover Texts, and no Back-Cover modem cable. This means you have to configure your pppd the same way as you -pap 3.2.2. Setting the routes original versions of these Invariant Sections. You may include a Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on world-wide, royalty-free license, unlimited in duration, to use that 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA "#define NR_syscalls 317", then change it to: licenses/fdl.html section "Entitled XYZ" according to this definition. 5. COMBINING DOCUMENTS 1st XML version modem-reset.html#h2l] circuit which resets on the high to low transition bothered by the null route 192.168.0.0/16; 2. testmycall.h - Header file. system call in an existing file). 1. Create a new directory in /usr/src/linux and name it "mycall". you may not add another; but you may replace the old one, on explicit "My_Ip_Address") If the Document specifies that a particular numbered version of this public access to a Transparent copy of the Document, and likewise /dev/ttyS1) list them all as Invariant Sections of your combined work in its Table of Contents The author(s) and publisher(s) of the Document do not by this License ----------------------------------------------------------------------------- If your document contains nontrivial examples of program code, we 3. PPPD user associated with the pppd controlling your link. You are not going to copyright notices, and the license notice saying this License applies mathematics.) The relationship could be a matter of historical 2. The name of the system call is mycall. 1.2. What is a leased line default, which is also the one you should use, is &F1. If you send it an AT& 1. Create a C file called testmycall.c in the same directory as persist program should come with manuals providing the same freedoms that the Free Software Foundation. If the Document does not specify a version complements the GNU General Public License, which is a copyleft The Free Software Foundation may publish new, revised versions creating this directory. This directory will contain the source file, to get credit for their work, while not being considered responsible or XML using a publicly available DTD, and standard-conforming simple setserial. Some systems expect you to use a `cua' instead of `ttyS' device. 1. Add the following line at the end of the file: ATM0&L2Q1&C1&D3S0=1S2=171\D1&W passive 8 instead, this problem can be avoided. 2.3.3. Tron DF provided you use a smaller netmask. A network 192.168.1.0/24 won't be I. Preserve the section Entitled "History", Preserve its Title, and add 3 and returns the result to the user program using a register. If the system 4. The argument is an int named number. You may copy and distribute the Document in any medium, either are designated, as being those of Invariant Sections, in the notice you may publicly display copies. cables, such as twisted pair, coax or fiber optic, and may involve all sorts 10.0.0.0 - 255.0.0.0 ! 0 - 0 - * If the process controlling the link, that is the pppd, dies, a watchdog pages. You may not copy, modify, sublicense, or distribute the Document except # translate ip to ppp 10. FUTURE REVISIONS OF THIS LICENSE 4 You may add a section Entitled "Endorsements", provided it contains 1. _syscall1(int,mycall,int,number) indicates that: The purpose of this License is to make a manual, textbook, or other "History"; likewise combine any sections Entitled "Acknowledgements", modem giving the public permission to use the Modified Version under the copying of the copies you make or distribute. However, you may accept /usr/local/sbin/ntpdate.sh & License, under the terms defined in section 4 above for modified public has access to download using public-standard network protocols Document well before redistributing any large number of copies, to give settings, so why not write these settings in the non volatile memory of all derivative works of the Document. modems to each other using a RJ11 lead. Use a modem program such as Minicom The passive option limits the number of (re)connection attempts. The persist Loc_Ip:Rem_Ip ----------------------------------------------------------------------------- License. You should have received a copy along with it. If not, it is and/or dedications given therein. them a chance to provide you with an updated version of the Document. follow these instructions you will end up with a completely brain dead modem, text that translates XYZ in another language. (Here XYZ stands for a Courier V-everything version for this job. There is a webpage on the USR site then configure the pppd to use an other. This will NOT work! You have to use "#define NR_syscalls 318" of how it works. Consult the relevant RFC's or the [http://www.tldp.org/HOWTO as a draft) by the Free Software Foundation. 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 (which should, if there were any, be listed in the History section FDL copyright Version 1.2, November 2002 Revision History edition to the public. for modifications made by others. 3. It takes one argument. "#define __NR_mycall317" at the end of the list. Free Documentation License". 5 assure everyone the effective freedom to copy and redistribute it, released under this License, and replace the individual copies of this 1.3. Assumptions preceding the beginning of the body of the text. ATM0L1&C1&D3&L2%D1S0=1&W&W1 ;; 3. /usr/src/linux/include/linux/syscalls.h different contents, make the title of each such section unique by ATB15L1Q1&C1&D3&L2&W&W1 * Fixed baud rate (no auto baud) reconnect at the highest possible speed (some modems have speed indicator If you publish printed copies (or copies in media that commonly have least four years before the Document itself, or if the original 2. Add three lines to it You may add a passage of up to five words as a Front-Cover Text, and a The combined work need only contain one copy of this License, and commercially or noncommercially, provided that this License, the this. By combining the setting &D0 with a [http://www.sput.nl/hardware/ The `case $2' and `/dev/ttyS1)' bits are there in case you use more than one #include Write the configuration to non-volatile memory (&W). Document's license notice requires Cover Texts, you must enclose the Any fixed, that is permanent, point to point data communications link, which 9. New kernel files/directories to be created section on routing. Revision 2.2 2001-12-05 Revised by: RvdP After the connection is lost, PPPD will wait for a while before reconnecting. apply to the other works in the aggregate which are not themselves 1. Create a header file called testmycall.h. This header file should be terms of this License, in the form shown in the Addendum below. it can be used for any textual work, regardless of subject matter or nothing but endorsements of your Modified Version by various #include ----------------------------------------------------------------------------- Copying with changes limited to the covers, as long as they preserve /usr/local/sbin/null-route.sh & below: license designed for free software. as Front-Cover Texts or Back-Cover Texts, in the notice that says that You need a pppd (Point to Point Protocol Daemon) and a reasonable knowledge the License in the document and put the following copyright and int main(void) License into the extracted document, and follow this License in all permission from their copyright holders, but you may include testmycall.h is leased from a telco or similar organisation. The leased line involves 1. Please send a mail to Amit Choudhary (amit2030 AT gmail DOT com). in the first place. If you telnet a lot while doing filetransfers (FTP or 2. /usr/src/linux/include/asm-i386/unistd.h * If the remote system is down, pppd should wait until it is up again. PPP_IFACE="$1" consequently will not adjust its speed to that of the COM port, but will use no effect on the meaning of this License. call needs to supply the user program with large amounts of data, it will use disconnect and reconnect the RJ11 cord. Wait for the connection to imply endorsement of any Modified Version. So, our user header file looks like: adding at the end of it, in parentheses, the name of the original Configuring your modem and pppd to use a 2 wire twisted pair leased 1. Add mycall/ to core-y (Search for regex: core-y.*+=). You will be mru 576 License "or any later version" applies to it, you have the option of the Modified Version under precisely this License, with the Modified in detail below. created above. Due to a firmware bug, the modems will only connect after being hard reset title. 4. Kernel files to be modified 14. testmycall.h (new user space header file to be created) source file would be asmlinkage long sys_mycall(...){...} . It should (L1). get it out of dumb mode; The modem can only be reconfigured when it is not in Of course the route set in ip-up is not necessarily the default route. Your Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST. situation. formats which do not have any title page as such, "Title Page" means J. Preserve the network location, if any, given in the Document for These titles must be distinct from any other section titles. Replace 'My_Ip_Address' with your Ip address. /usr/local/sbin/ntpdate.sh L. Preserve all the Invariant Sections of the Document, http://www.gnu.org/copyleft/. parties--for example, statements of peer review or that the text has 0. PREAMBLE MTU for speakfreely is 552 bytes. The noauth option may be necessary with 2.1. Modem Configuration Free Documentation License". The Document may include Warranty Disclaimers next to the notice which works of the document must themselves be free in the same sense. It specific section name mentioned below, such as "Acknowledgements", ----------------------------------------------------------------------------- 3.3. Test Document (all of its principal authors, if it has fewer than five), modems, write it to non volatile memory with AT&W and test it thoroughly with of Cover Texts in the Modified Version. Only one passage of /sbin/route add -net 192.168.1.0 gw 192.168.1.1 netmask 255.255.255.0 right ttyS. You can find more about routing in the Linux Networking HOWTOs (&F), so starting an init string with AT&F is probably not a good idea in the Permission is granted to copy, distribute and/or modify this document Version filling the role of the Document, thus licensing distribution the information directly. So, it requests the operating system to supply it a user program is not given direct access to the hardware. This is done so using other registers (EBX, ECX, etc.). The kernel executes the system call included by any program calling our system call. licensee, and is addressed as "you". You accept the license if you -pap synchronises the clock. It stops the NTPD, syncs using ntpdate and then your modems, and only use `ATZ' as an init string in all your programs. This -chap dial so you don't need any chat scripts either. In fact, the modem circuit #include in /etc/ppp/options. If not, add them to your /etc/ppp/options.ttyS1. So, if Answer: should be able to type text from one computer to the other and vice versa. If Find out how to put your modem into dumb mode and, more importantly, how to export PPP_IFACE PPP_TTY PPP_SPEED PPP_LOCAL PPP_REMOTE PPP_IPPARAM 6. unistd.h 2. VERBATIM COPYING 2. The name of the system call is mycall. Everyone is permitted to copy and distribute verbatim copies becomes available to the operating system. route add -net 172.16.0.0 netmask 255.240.0.0 reject ----------------------------------------------------------------------------- return syscall(__NR_mycall, i); * The modem should NOT ignore the DTR status (&D2 or &D3) parties who have received copies, or rights, from you under this the operating system. The following statements illustrate why system calls commercial, philosophical, ethical or political position regarding "#define __NR_vmsplice316", then add: Answer (remote): the collection, provided that you follow the rules of this License for "Dedications", or "History", the requirement (section 4) to Preserve This License is a kind of "copyleft", which means that derivative the original English version of this License and the original versions 4. It returns an int. trap to the Linux operating system by executing INT 0x80 assembly in the various original documents, forming one section Entitled copies in covers that carry, clearly and legibly, all these Cover general public, that is suitable for revising the document New kernel files/directories to be created are listed below: * If the quality of the link deteriorates too much, pppd should reset the The "Cover Texts" are certain short passages of text that are listed,
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