toybox: toys/chvt.c annotate

annotate toys/chvt.c @ 244:e6273440c9c0

Comment and whitespace cleanups by Charlie Shepherd (code's the same).

author	Rob Landley <rob@landley.net>
date	Sat, 26 Jan 2008 23:18:08 -0600
parents	163498bf547b
children	d9ea4ca7ae8c

rev	line source
233 d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	1 /* vi: set sw=4 ts=4:
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	2 *
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	3 * chvt.c - switch virtual terminals
e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	4 *
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	5 * Copyright (C) 2008 David Anders <danders@amltd.com>
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	6 *
233 d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	7 * Not in SUSv3.
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	8
234 163498bf547b Move NEWTOY() list from end of toylist.h to generated/newtoys.h. Rob Landley <rob@landley.net> parents: 233 diff changeset	9 USE_CHVT(NEWTOY(chvt, "<1", TOYFLAG_USR\|TOYFLAG_SBIN))
163498bf547b Move NEWTOY() list from end of toylist.h to generated/newtoys.h. Rob Landley <rob@landley.net> parents: 233 diff changeset	10
233 d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	11 config CHVT
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	12 bool "chvt"
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	13 default y
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	14 help
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	15 usage: chvt N
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	16
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	17 Change to virtual terminal number N. (This only works in text mode.)
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	18
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	19 Virtual terminals are the Linux VGA text mode displays, ordinarily
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	20 switched between via alt-F1, alt-F2, etc. Use ctrl-alt-F1 to switch
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	21 from X to a virtual terminal, and alt-F6 (or F7, or F8) to get back.
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 229 diff changeset	22 */
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	23
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	24 #include "toys.h"
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	25
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	26 #define VT_ACTIVATE 0x5606
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	27 #define VT_WAITACTIVE 0x5607
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	28
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	29 /* Note: get_console_fb() will need to be moved into a seperate lib section */
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	30 int get_console_fd()
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	31 {
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	32 int fd;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	33
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	34 fd = open("/dev/console", O_RDWR);
e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	35 if (fd >= 0) return fd;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	36
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	37 fd = open("/dev/vc/0", O_RDWR);
e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	38 if (fd >= 0) return fd;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	39
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	40 fd = open("/dev/tty", O_RDWR);
e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	41 if (fd >= 0) return fd;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	42
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	43 return -1;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	44 }
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	45
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	46 void chvt_main(void)
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	47 {
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	48 int vtnum, fd;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	49
87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	50
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	51 if(!*toys.optargs) return;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	52
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	53 vtnum=atoi(*toys.optargs);
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	54
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	55 fd=get_console_fd();
e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	56 if (fd < 0) return;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	57
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	58 if (ioctl(fd,VT_ACTIVATE,vtnum)) return;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	59
244 e6273440c9c0 Comment and whitespace cleanups by Charlie Shepherd (code's the same). Rob Landley <rob@landley.net> parents: 234 diff changeset	60 if (ioctl(fd,VT_WAITACTIVE,vtnum)) return;
229 87390c3700c1 Add chvt from David Anders. Rob Landley <rob@landley.net> parents: diff changeset	61 }

Mercurial > hg > toybox

annotate toys/chvt.c @ 244:e6273440c9c0