mirror of
https://github.com/topjohnwu/ndk-busybox.git
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51 lines
932 B
C
51 lines
932 B
C
/* vi: set sw=4 ts=4: */
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/*
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* chvt.c - aeb - 940227 - Change virtual terminal
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*
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* busyboxed by Erik Andersen
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*/
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#include "internal.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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/* From <linux/vt.h> */
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#define VT_ACTIVATE 0x5606 /* make vt active */
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#define VT_WAITACTIVE 0x5607 /* wait for vt active */
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int chvt_main(int argc, char **argv)
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{
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int fd, num;
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if ((argc != 2) || (**(argv + 1) == '-')) {
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usage ("chvt N\n"
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#ifndef BB_FEATURE_TRIVIAL_HELP
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"\nChanges the foreground virtual terminal to /dev/ttyN\n"
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#endif
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);
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}
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fd = get_console_fd("/dev/console");
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num = atoi(argv[1]);
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if (ioctl(fd, VT_ACTIVATE, num)) {
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perror("VT_ACTIVATE");
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exit(FALSE);
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}
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if (ioctl(fd, VT_WAITACTIVE, num)) {
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perror("VT_WAITACTIVE");
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exit(FALSE);
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}
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return(TRUE);
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}
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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