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/* swapon.c - Enable region for swapping
*
* Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
USE_SWAPON(NEWTOY(swapon, "<1>1p#<0>32767d", TOYFLAG_SBIN|TOYFLAG_NEEDROOT))
config SWAPON
bool "swapon"
default y
help
usage: swapon [-d] [-p priority] filename
Enable swapping on a given device/file.
-d Discard freed SSD pages
*/
#define FOR_swapon
#include "toys.h"
GLOBALS(
long priority;
)
void swapon_main(void)
{
// 0x70000 = SWAP_FLAG_DISCARD|SWAP_FLAG_DISCARD_ONCE|SWAP_FLAG_DISCARD_PAGES
int flags = (toys.optflags&FLAG_d)*0x70000;
if (toys.optflags)
flags |= SWAP_FLAG_PREFER | (TT.priority << SWAP_FLAG_PRIO_SHIFT);
if (swapon(*toys.optargs, flags))
perror_exit("Couldn't swapon '%s'", *toys.optargs);
}
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