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<TITLE>Linux Complete Command Reference:Special Files:EarthWeb Inc.-</TITLE>

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<!-- ISBN=0672311046 //-->

<!-- TITLE=Linux Complete Command Reference//-->

<!-- AUTHOR=Red Hat//-->

<!-- PUBLISHER=Macmillan Computer Publishing//-->

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<!-- CHAPTER=04 //-->

<!-- PAGES=1063-1102 //-->

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<P><CENTER>

<a href="1075-1076.html">Previous</A> | <a href="../ewtoc.html">Table of Contents</A> | <a href="1079-1081.html">Next</A></CENTER></P>







<A NAME="PAGENUM-1077"><P>Page 1077</P></A>



<TABLE>



<TR><TD>

PIO_UNIMAPCLR

</TD><TD>

Clear table, possibly advise hash algorithm.

argp points to a<BR>

<!-- CODE //-->

<PRE>

struct unimapinit {

u short advised hashsize; /* 0 if no opinion */

u short advised hashstep; /* 0 if no opinion */

u short advised hashlevel; /* 0 if no opinion */

};

(Since 1.1.92.)

</PRE>

<!-- END CODE //-->

</TD></TR><TR><TD>

KDGKBMODE

</TD><TD>

Gets current keyboard mode. argp points to a

long, which is set to one of these:<BR><BR>

<!-- CODE SNIP //-->

<PRE>

K_RAW           0x00

K_XLATE         0x01

K_MEDIUMRAW     0x02

K_UNICODE       0x03

</PRE>

<!-- END CODE SNIP //-->

</TD></TR><TR><TD>

KDSKBMODE

</TD><TD>

Sets current keyboard mode. argp is a long equal to one of the above values.

</TD></TR><TR><TD>

KDGKBMETA

</TD><TD>

Gets meta key handling mode. argp points to a long which is set to one of these:<BR><BR>

<!-- CODE SNIP //-->

<PRE>

K_METABIT       0x03     Set high order bit

K_ESCPREFIX     0x04     Escape prefix

</PRE>

<!-- END CODE SNIP //-->

</TD></TR><TR><TD>

KDSKBMETA

</TD><TD>

Sets meta key handling mode. argp is a long equal to one of the preceding values.

</TD></TR><TR><TD>

KDGKBENT

</TD><TD>

Gets one entry in key translation table (keycode to action code).

argp points to a<BR>

<!-- CODE SNIP //-->

<PRE>

struct kbentry {

u_char kb_table;

u_char kb_index;

u_short kb_value;

};

</PRE>

<!-- END CODE SNIP //-->

</TD></TR><TR><TD>

</TD><TD>

with the first two members filled in:

kb_table selects the key table (0 &lt;= kb_table

&lt;MAX_NR_KEYMAPS), and kb_index is the keycode

(0 &lt;= kb index &lt;NR_KEYS). kb_value is set to the corresponding action code, or

K_HOLE if there is no such key, or K_NOSUCHMAP if

kb_table is invalid.

</TD></TR><TR><TD>

KDSKBENT

</TD><TD>

Sets one entry in translation table.

argp points to a struct kbentry.

</TD></TR><TR><TD>

KDGKBSENT

</TD><TD>

Gets one function key string. argp points to a<BR><BR>

<!-- CODE SNIP //-->

<PRE>

struct kbsentry {

u_char kb_func;

u_char kb_string[512];

;

</PRE>

<!-- END CODE SNIP //-->

</TD></TR><TR><TD>

</TD><TD>

kb_string is set to the (NULL-terminated) string corresponding to the

kb_functh function key action code.

</TD></TR><TR><TD>

KDSKBSENT

</TD><TD>

Sets one function key string entry.

argp points to a struct kbsentry.

</TD></TR><TR><TD>

KDGKBDIACR

</TD><TD>

Read kernel accent table. argp points to a<BR><BR>

<!-- CODE SNIP //-->

<PRE>

struct kbdiacrs {

unsigned int kb_cnt;

struct kbdiacr kbdiacr[256];

};

</PRE>

<!-- END CODE SNIP //-->

</TD></TR><TR><TD>

</TD><TD>

where kb_cnt is the number of entries in the array, each of which is a

struct kbdiacr { u_char diacr, base, result ;};

</TD></TR><TR><TD>

KDGETKEYCODE

</TD><TD>

Read kernel keycode table entry (scan code to keycode).

argp points to a

struct kbkeycode { unsigned int scancode, keycode; };<BR><BR>

keycode is set to correspond to the given

scancode.(89&lt;=scancode &lt;= 255 only.

For 1 &lt;= scancode &lt;= 88,

keycode==scancode.) (Since 1.1.63.)

</TD></TR><TR><TD>

KDSETKEYCODE

</TD><TD>

Write kernel keycode table entry.

argp points to struct kbkeycode. (Since 1.1.63.)

</TD></TR></TABLE>



<A NAME="PAGENUM-1078"><P>Page 1078</P></A>





<TABLE>



<TR><TD>

KDSIGACCEPT

</TD><TD>

The calling process indicates its willingness to accept the signal

argp when it is generated by pressing an appropriate key combination.

(1 &lt;= argp &lt;=NSIG).

(See spawn_console() in

linux/drivers/char/keyboard.c.)

</TD></TR><TR><TD>

VT_OPENQRY

</TD><TD>

Returns the first available (nonopened) console.

argp points to an int that is set to the number of the

vt (1 &lt;= *argp &lt;=MAX_NR_CONSOLES).

</TD></TR><TR><TD>

VT_GETMODE

</TD><TD>

Get mode of active vt. argp points to a<BR><BR>

<!-- CODE //-->

<PRE>

struct vt mode {

char mode;/*vtmode*/

char waitv; /* if set, hang on writes if not active */

short relsig; /* signal to raise on release req */

short acqsig; /* signal to raise on acquisition */

short frsig; /* unused (set to 0) */

};

</PRE>

<!-- END CODE //-->

</TD></TR><TR><TD>

</TD><TD>

mode is set to one of these values:<BR><BR>

<!-- CODE SNIP //-->

<PRE>

VT_AUTO        Auto vt switching

VT_PROCESS     Process controls switching

VT_ACKACQ      Acknowledge switch

</PRE>

<!-- END CODE SNIP //-->

</TD></TR><TR><TD>

VT_SETMODE

</TD><TD>

Set mode of active vt. argp points to a

struct vt_mode.

</TD></TR><TR><TD>

VT_GETSTATE

</TD><TD>

Get global vt state info. argp points to a

</TD></TR><TR><TD>

</TD><TD>

<!-- CODE SNIP //-->

<PRE>

struct vt_stat {

ushort v_active; /* active vt */

ushort v_signal;/*signalto send*/

ushort v_state;/*vtbitmask*/

};

</PRE>

<!-- END CODE SNIP //-->

</TD></TR><TR><TD>

</TD><TD>

For each vt in use, the corresponding bit in the

v state member is set. (Kernels 1.0 through 1.1.92.)

</TD></TR><TR><TD>

VT_RELDISP

</TD><TD>

Release a display.

</TD></TR><TR><TD>

VT_ACTIVATE

</TD><TD>

Switch to vt argp (1 &lt;= argp

&lt;=MAX_NR_CONSOLES).

</TD></TR><TR><TD>

VT_WAITACTIVE

</TD><TD>

Wait until vt argp has been activated.

</TD></TR><TR><TD>

VT_DISALLOCATE

</TD><TD>

Deallocate the memory associated with

vt argp. (Since 1.1.54.)

</TD></TR><TR><TD>

VT_RESIZE

</TD><TD>

Set the kernel's idea of screensize.

argp points to a

</TD></TR><TR><TD>

</TD><TD>

<!-- CODE SNIP //-->

<PRE>

struct vt_sizes {

ushort v_rows;/*#rows*/

ushort v_cols;/*#columns */

ushort v_scrollsize; /* no longer used */

};

</PRE>

<!-- END CODE SNIP //-->

</TD></TR><TR><TD>

</TD><TD>

Note that this does not change the video mode. See

resizecons(8). (Since 1.1.54.)

</TD></TR><TR><TD>

VT_RESIZEX

</TD><TD>

Set the kernel's idea of various screen parameters.

argp points to a

</TD></TR><TR><TD>

</TD><TD>

struct vt_consize {

</TD></TR><TR><TD>

</TD><TD>

ushort v_rows; /* number of rows */

</TD></TR><TR><TD>

</TD><TD>

ushort v_cols; /* number of columns */

</TD></TR><TR><TD>

</TD><TD>

ushort v_vlin; /* number of pixel rows on screen */

</TD></TR><TR><TD>

</TD><TD>

ushort v_clin; /* number of pixel rows per character */

</TD></TR><TR><TD>

</TD><TD>

ushort v_vcol; /* number of pixel columns on screen */

</TD></TR><TR><TD>

</TD><TD>

ushort v_ccol; /* number of pixel columns per character */

</TD></TR><TR><TD>

};

</TD><TD>

Any parameter may be set to zero, indicating no change, but if multiple

parameters are set, they must be self-consistent. Note that this does not change the video

mode. See resizecons(8). (Since 1.3.3.)

</TD></TR></TABLE>







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