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diff --git a/upstream/fedora-rawhide/man8/gpm.8 b/upstream/fedora-rawhide/man8/gpm.8 new file mode 100644 index 00000000..be6950bd --- /dev/null +++ b/upstream/fedora-rawhide/man8/gpm.8 @@ -0,0 +1,360 @@ +.TH GPM 8 "February 2002" +.UC 4 +.SH NAME +gpm \- a cut and paste utility and mouse server for virtual consoles +.SH SYNOPSIS +.B gpm +[ +.I options +] +.br +.SH DESCRIPTION +This package tries to be a useful +mouse server for applications running on the Linux console. It is +based on the "selection" package, and some of its code +comes from selection itself. This package is intended as a replacement +for "selection" as a cut-and-paste mechanism; it also provides +additional facilities. The "selection" +package offered the first cut-and-paste implementation for Linux using +two mouse buttons, and the cut buffer is still called "selection buffer" +or just "selection" throughout this document. +The information below is extracted from the texinfo file, which is the +preferred source of information. + +.LP +The gpm executable is meant to act like a daemon (thus, gpmd +would be a better name for it). This section is meant to describe the +command-line options for gpm, while its internals are outlined in +the next section. + +.LP +Due to restrictions in the ioctl(TIOCLINUX) system call, gpm must +be run by the superuser. The restrictions have been added in the last 1.1 +kernels to fix a security hole related to selection and screen dumping. + +.LP +The server can be configured to match the user's taste, and any +application using the mouse will inherit the server's +attitude. From release 1.02 up to 1.19.2 is was possible +for any user logged on the system console to change the mouse feeling +using the \-q option. This is no longer possible for security +reasons. + +.LP +As of 0.97 the server program puts itself in the background. To kill +gpm you can just reinvoke it with the \-k cmdline switch, +although killall gpm can be a better choice. + +.LP +.SH SPECIAL COMMANDS + +.LP +Version 1.10 adds the capability to execute special commands on +certain circumstances. Special commands default to rebooting and halting +the system, but the user can specify his/her personal choice. The +capability to invoke commands using the mouse is a handy one for +programmers, because it allows to issue a clean shutdown when the +keyboard is locked and no network is available to restore the system to +a sane state. + +.LP +Special commands are toggled by triple-clicking the left and right button -- +an unlikely event during normal mouse usage. The easiest way to triple-click +is pressing one of the buttons and triple-click the other one. When special +processing is toggled, a message appears on the console (and the speaker +beeps twice, if you have a speaker); if the user releases all the buttons +and presses one of them again within three seconds, then the special +command corresponding to the button is executed. + +.LP +The default special commands are: +.TP +left button +Reboot the system by signalling the init process +.TP +middle button (if any) +Execute /sbin/shutdown \-h now +.TP +right button +Execute /sbin/shutdown \-r now + +.LP +The \-S command line switch enables special command processing and +allows to change the three special commands. To accept the default +commands use \-S "" (i.e., specify an empty argument). To specify +your own commands, use a colon-separated list to specify commands +associated to the left, middle and right button. If any of the commands +is empty, it is interpreted as `send a signal to the init process'. This +particular operation is supported, in addition to executing external +commands, because sometimes bad bugs put the system to the impossibility +to fork; in these rare case the programmer should be able to shutdown +the system anyways, and killing init from a running process is the only +way to do it. + +.LP +As an example, \-S ":telinit 1:/sbin/halt", associates killing +init to the left button, going single user to the middle one, and halting +the system to the right button. + +.LP +System administrators should obviously be careful about special +commands, as gpm runs with superuser permissions. Special commands are +best suited for computers whose mouse can be physically accessed only by +trusted people. + +.LP +.SH COMMAND LINE OPTIONS + +.LP +Available command line options are the following: +.TP +\-a \fBaccel\fP +Set the acceleration value used when a single motion event is +longer than \fBdelta\fP (see \-d\fP). +.TP +\-A[\fBlimit\fP] +Start up with selection pasting disabled. This is intended as a +security measure; a plausible attack on a system seems to be to +stuff a nasty shell command into the selection buffer +(rm \-rf /) including the terminating line break, then all the +victim has to do is click the middle mouse button .. +As of version 1.17.2, this has developed +into a more general aging mechanism; the +gpm daemon can disable (age) selection pasting +automatically after a period of inactivity. To enable this mode +just give the optional \fBlimit\fP parameter (no space in between !) +which is interpreted as the time in seconds for which a selection is +considered valid and pastable. +As of version 1.15.7, a trivial program called +disable-paste is provided. The following makes a good +addition to /etc/profile if you allow multiple users to +work on your console. + +.LP +case $( /usr/bin/tty ) in +.br +/dev/tty[0\-9]*) /usr/bin/disable-paste ;; +.br +esac +.TP +\-b \fBbaud\fP +Set the baud rate. +.TP +\-B \fBsequence\fP +Set the button sequence. 123 is the +normal sequence, 321 can be used by left-handed people, +and 132 can be useful with two-button mice (especially within +Emacs). All the button permutations are allowable. +.TP +\-d \fBdelta\fP +Set the delta value. When a single motion event +is longer than \fBdelta\fP, \fBaccel\fP is used as a multiplying +factor. (Must be 2 or above) +.TP +\-D +Do not automatically enter background operation when started, +and log messages to the standard error stream, not the syslog +mechanism. This is useful for debugging; in previous releases +it was done with a compile-time option. +.TP +\-g \fBnumber\fP +With glidepoint devices, emulate the specified button with tapping. +\fBnumber\fP must be 1\fP, 2\fP, or 3\fP, and refers to the +button number before the \-B button remapping is performed. +This option applies to the mman and ps2 decoding. No button is +emulated by default because the ps2 tapping is incompatible with +some normal ps2 mice +.TP +\-h +Print a summary of command line options. +.TP +\-i \fBinterval\fP +Set \fBinterval\fP to be used as an upper time limit +for multiple clicks. If the interval between button-up and +button-down events is less than \fBlimit\fP, the press is considered +a double or triple click. Time is in milliseconds. +.TP +\-k +Kill a running gpm. This can be used by busmouse users to kill gpm +before running X (unless they use \-R or the single-open +limitation is removed from the kernel). +.TP +\-l \fBcharset\fP +Choose the inword() look up table. The +\fBcharset\fP argument is a list of characters. \-\fP is used to +specify a range and \\ is used to escape the next character +or to provide octal codes. +Only visible character can appear in \fBcharset\fP because control +characters can't appear in text-mode video memory, whence selection +is cut. +.TP +\-m \fBfilename\fP +Choose the mouse file to open. Must be before \-t and \-o. +.TP +\-M +Enable multiple mode. The daemon will read two different mouse devices. +Any subsequent option will refer to the second device, while any +preceding option will be used for the first device. This option +automatically forces the repeater (\-R) option on. +.TP +\-o \fBlist-of-extra-options\fP +The option works similary to the ``\-o'' option of mount; it is +used to specify a list of ``extra options'' that are specific +to each mouse type. The list is comma-separated. The options +dtr, rts or both are used by the serial +initialization to toggle the modem lines like, compatibly with +earlier gpm versions; note however that using \-o dtr +associated with non-plain-serial mouse types may now generate +an error. +And by the way, use \-o after \-m and after \-t. + +.TP +\-p +Forces the pointer to be visible while selecting. This is the +behaviour of selection-1.7, but it is sometimes confusing. +The default is not to show the pointer, which can be confusing as well. +.TP +\-r \fBnumber\fP +Set the responsiveness. A higher responsiveness is used for a faster +cursor motion. +.TP +\-R[\fBname\fP] +Causes gpm to act as a repeater: any mouse data received while +in graphic mode will be produced on the fifo /dev/gpmdata +in protocol \fBname\fP, given as an optional argument (no space in +between !). In principle, you can use the same +names as for the \-t option, although repeating into some +protocols may not be implemented for a while. +In addition, you can specify raw\fP as the \fBname\fP, to repeat +the mouse data byte by byte, without any protocol translation. +If \fBname\fP is omitted, it defaults to msc\fP. +Using gpm in repeater mode, you can configure the X +server to use its fifo as a mouse device. This option is useful for +bus-mouse owners to override the single-open limitation. It is also +an easy way to manage those stupid dual-mode mice which force you +to keep the middle button down while changing video mode. The option +is forced on by the \-M option. +.TP +\-s \fBnumber\fP +Set the sample rate for the mouse device. +.TP +\-S \fBcommands\fP +Enable special-command processing, and optionally specify custom +commands as a colon-separated list. See above for a detailed +description of special commands. +.TP +\-t \fBname\fP +Set the mouse type. Use \-t help to get a list +of allowable types. Since version 1.18.1, the list also shows +which protocols are available as repeaters (see \-R above), +by marking them with an asterisk (``*''). + +Use \-t after you selected the mouse device with \-m. +.TP +\-v +Print version information and exit. +.TP +\-2 +Force two buttons. This means that the middle button, if any, +will be taken as it was the right one. +.TP +\-3 +Force three buttons. By default the +mouse is considered to be a 2-buttons one, until the middle button +is pressed. If three buttons are there, the right one is used +to extend the selection, and the middle one is used to paste it. +Beware: if you use the \-3 option with a 2-buttons mouse, you +won't be able to paste the selection. + +.LP +.SH OPERATION + +.LP +To select text press the left mouse button and drag the mouse. +To paste text in the same or another console, press the middle button. +The right button is used to extend the selection, like in `xterm'. + +.LP +Two-button mice use the right button to paste text. + +.LP +Double and triple clicks select whole word and whole lines. Use of +the `\-p' option is recommended for best visual feedback. + +.LP +If a trailing space after the contents of a line is highlighted, and if +there is no other text on the remainder of the line, the rest of the +line will be selected automatically. If a number of lines are selected, +highlighted trailing spaces on each line will be removed from the +selection buffer. + +.LP +Any output on the virtual console holding the selection will clear the +highlighted selection from the screen, to maintain integrity of the +display, although the contents of the paste buffer will be unaffected. + +.LP +The selection mechanism is disabled if the controlling virtual console +is placed in graphics mode, for example when running X11, and is +re-enabled when text mode is resumed. (But see BUGS section below.) + +.LP +.SH BUGS +The gpm server may have problems interacting with X: if your +mouse is a single-open device (i.e. a bus mouse), you should kill +gpm before starting X, or use the \-R option (see +above). To kill gpm just invoke gpm \-k. This problem doesn't +apply to serial mice. + +.LP +Two instances of gpm can't run on the same system. If you have two mice use +the \-M option (see above). + +.LP +While the current console is in graphic mode, gpm sleeps until +text mode is back (unless \-R is used). Thus, it won't reply to +clients. Anyways, it is unlikely that mouse-eager clients will spur +out in hidden consoles. + +.LP +The clients shipped out with gpm are not updated, thus there are potential +security risks when using them. + +.LP +.SH AUTHORS +.nf +Andrew Haylett <ajh@gec-mrc.co.uk> (the original selection code) +Ian Zimmerman <itz@speakeasy.org> (old maintainer) +Alessandro Rubini <rubini@linux.it> (old maintainer (still helps a lot)) +Nico Schottelius <nico-gpm2008@schottelius.org> (maintainer) + +Many many contributors, to both selection and gpm. +.fi + +.LP +.SH MAINTAINERS + +.LP +The current maintainer is Nico Schottelius. But without the help of +Alessandro Rubini and the mailing list it would be impossible for me to +maintain gpm. The development mailing list can be reached under +gpm@lists.linux.it. More information on the list is in the README file part of +the source distribution of gpm. + +.LP +.SH FILES +.nf +/var/run/gpm.pid The PID of the running gpm +/dev/gpmctl A control socket for clients +/dev/gpmdata The fifo written to by a \fBrepeater\fP (`\-R') daemon. +.fi + +.LP +.SH SEE ALSO +.nf +\fB mev(1)\fP A sample client for the gpm daemon. +\fB gpm-root(1)\fP An handler for Control-Mouse events. + +.fi +The info file about `gpm', which gives more complete information and +explains how to write a gpm client. |