diff options
Diffstat (limited to 'toys/other/chvt.c')
-rw-r--r-- | toys/other/chvt.c | 48 |
1 files changed, 23 insertions, 25 deletions
diff --git a/toys/other/chvt.c b/toys/other/chvt.c index 80eeadc4..7a0119c9 100644 --- a/toys/other/chvt.c +++ b/toys/other/chvt.c @@ -1,22 +1,20 @@ -/* vi: set sw=4 ts=4: - * - * chvt.c - switch virtual terminals +/* chvt.c - switch virtual terminals * * Copyright (C) 2008 David Anders <danders@amltd.com> USE_CHVT(NEWTOY(chvt, "<1", TOYFLAG_USR|TOYFLAG_SBIN)) config CHVT - bool "chvt" - default y - help - usage: chvt N + bool "chvt" + default y + help + usage: chvt N - Change to virtual terminal number N. (This only works in text mode.) + Change to virtual terminal number N. (This only works in text mode.) - Virtual terminals are the Linux VGA text mode displays, ordinarily - switched between via alt-F1, alt-F2, etc. Use ctrl-alt-F1 to switch - from X to a virtual terminal, and alt-F6 (or F7, or F8) to get back. + Virtual terminals are the Linux VGA text mode displays, ordinarily + switched between via alt-F1, alt-F2, etc. Use ctrl-alt-F1 to switch + from X to a virtual terminal, and alt-F6 (or F7, or F8) to get back. */ #include "toys.h" @@ -24,26 +22,26 @@ config CHVT /* Note: get_console_fb() will need to be moved into a seperate lib section */ int get_console_fd() { - int fd; - char *consoles[]={"/dev/console", "/dev/vc/0", "/dev/tty", NULL}, **cc; + int fd; + char *consoles[]={"/dev/console", "/dev/vc/0", "/dev/tty", NULL}, **cc; - cc = consoles; - while (*cc) { - fd = open(*cc++, O_RDWR); - if (fd >= 0) return fd; - } + cc = consoles; + while (*cc) { + fd = open(*cc++, O_RDWR); + if (fd >= 0) return fd; + } - return -1; + return -1; } void chvt_main(void) { - int vtnum, fd; + int vtnum, fd; - vtnum=atoi(*toys.optargs); + vtnum=atoi(*toys.optargs); - fd=get_console_fd(); - // These numbers are VT_ACTIVATE and VT_WAITACTIVE from linux/vt.h - if (fd < 0 || ioctl(fd, 0x5606, vtnum) || ioctl(fd, 0x5607, vtnum)) - perror_exit(NULL); + fd=get_console_fd(); + // These numbers are VT_ACTIVATE and VT_WAITACTIVE from linux/vt.h + if (fd < 0 || ioctl(fd, 0x5606, vtnum) || ioctl(fd, 0x5607, vtnum)) + perror_exit(NULL); } |