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annotate toys/other/swapon.c @ 1775:57f2a26fa92c draft toast

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To ensure that toybox can be installed alongside busybox without confusing update-alternatives, the paths of the links installed by toybox should match those installed by busybox. This is accomplished by changing the flags of a few tools within toybox.
author Paul Barker <paul@paulbarker.me.uk>
date Sat, 04 Apr 2015 11:58:06 -0500
parents 786841fdb1e0
children
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1 /* swapon.c - Enable region for swapping
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2 *
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3 * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
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4
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5 USE_SWAPON(NEWTOY(swapon, "<1>1p#<0>32767", TOYFLAG_SBIN|TOYFLAG_NEEDROOT))
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6
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7 config SWAPON
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8 bool "swapon"
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9 default y
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10 help
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11 usage: swapon [-p priority] filename
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13 Enable swapping on a given device/file.
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14 */
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7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
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16 #define FOR_swapon
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17 #include "toys.h"
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19 GLOBALS(
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20 long priority;
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21 )
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22
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23 void swapon_main(void)
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24 {
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25 int flags = 0;
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27 if (toys.optflags)
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28 flags = SWAP_FLAG_PREFER | (TT.priority << SWAP_FLAG_PRIO_SHIFT);
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30 if (swapon(*toys.optargs, flags))
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31 perror_exit("Couldn't swapon '%s'", *toys.optargs);
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32 }