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35 lines
927 B
35 lines
927 B
/* chvt.c - switch virtual terminals
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*
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* Copyright (C) 2008 David Anders <danders@amltd.com>
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USE_CHVT(NEWTOY(chvt, "<1", TOYFLAG_USR|TOYFLAG_BIN))
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config CHVT
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bool "chvt"
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default y
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help
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usage: chvt N
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Change to virtual terminal number N. (This only works in text mode.)
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Virtual terminals are the Linux VGA text mode displays, ordinarily
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switched between via alt-F1, alt-F2, etc. Use ctrl-alt-F1 to switch
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from X to a virtual terminal, and alt-F6 (or F7, or F8) to get back.
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*/
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#include "toys.h"
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void chvt_main(void)
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{
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int vtnum, fd = fd;
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char *consoles[]={"/dev/console", "/dev/vc/0", "/dev/tty", NULL}, **cc;
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vtnum=atoi(*toys.optargs);
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for (cc = consoles; *cc; cc++)
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if (-1 != (fd = open(*cc, O_RDWR))) break;
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// These numbers are VT_ACTIVATE and VT_WAITACTIVE from linux/vt.h
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if (!*cc || fd < 0 || ioctl(fd, 0x5606, vtnum) || ioctl(fd, 0x5607, vtnum))
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perror_exit(0);
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}
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