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	freeramdisk.c - ubase - suckless linux base utils
	git clone git://git.suckless.org/ubase
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	---
	freeramdisk.c (588B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <sys/ioctl.h>
	3 #include <sys/mount.h>
	4 #include <sys/types.h>
	5
	6 #include <fcntl.h>
	7 #include <stdio.h>
	8 #include <stdlib.h>
	9 #include <unistd.h>
	10
	11 #include "util.h"
	12
	13 static void
	14 usage(void)
	15 {
	16 eprintf("usage: %s\n", argv0);
	17 }
	18
	19 int
	20 main(int argc, char *argv[])
	21 {
	22 char *dev = "/dev/ram";
	23 int fd;
	24
	25 ARGBEGIN {
	26 default:
	27 usage();
	28 } ARGEND;
	29
	30 if (argc != 0)
	31 usage();
	32
	33 if ((fd = open(dev, O_RDWR)) < 0)
	34 eprintf("open: %s:", dev);
	35 if (ioctl(fd, BLKFLSBUF, dev) < 0)
	36 eprintf("BLKFLSBUF %s:", dev);
	37 close(fd);
	38 return 0;
	39 }