From d579bb58abb8a28bba8007bebee26661ef924300 Mon Sep 17 00:00:00 2001 From: Vivek Kumar Bhagat Date: Wed, 5 Feb 2014 18:13:31 +0530 Subject: [PATCH 3/3] Added deallocvt command --- toys/other/deallocvt.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 files changed, 38 insertions(+), 0 deletions(-) create mode 100644 toys/other/deallocvt.c diff --git a/toys/other/deallocvt.c b/toys/other/deallocvt.c new file mode 100644 index 0000000..77af53f --- /dev/null +++ b/toys/other/deallocvt.c @@ -0,0 +1,38 @@ +/* deallocvt.c - Deallocate virtual terminal(s) + * + * Copyright 2014 Vivek Kumar Bhagat + * + * No Standard. + +USE_DEALLOCVT(NEWTOY(deallocvt, ">1", TOYFLAG_USR|TOYFLAG_BIN)) + +config DEALLOCVT + bool "deallocvt" + default y + help + usage: deallocvt [N] + + Deallocate unused virtual terminal /dev/ttyN + default value of N is 0, deallocate all unused consoles +*/ + +#include "toys.h" +#include + +extern int find_console_fd(void); + +void deallocvt_main(void) +{ + int fd; + + // 0 : deallocate all unused consoles + int vt_num = 0; + + if (toys.optargs[0]) + vt_num = atolx_range(toys.optargs[0], 1, 63); + + fd = find_console_fd(); + if (fd < 0) error_exit("can't open console"); + + xioctl(fd, VT_DISALLOCATE, (void *)(ptrdiff_t)vt_num); +} -- 1.7.0.4