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1 | #!/bin/bash |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2018 IPFire Network Development Team # | |
6 | # # | |
7 | # This program is free software: you can redistribute it and/or modify # | |
8 | # it under the terms of the GNU General Public License as published by # | |
9 | # the Free Software Foundation, either version 3 of the License, or # | |
10 | # (at your option) any later version. # | |
11 | # # | |
12 | # This program is distributed in the hope that it will be useful, # | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
15 | # GNU General Public License for more details. # | |
16 | # # | |
17 | # You should have received a copy of the GNU General Public License # | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
19 | # # | |
20 | ############################################################################### | |
21 | ||
22 | led_exists() { | |
23 | local led="${1}" | |
24 | assert isset led | |
25 | ||
26 | file_exists "/sys/class/leds/${led}" | |
27 | } | |
28 | ||
29 | led_get_supported_triggers() { | |
30 | local led="${1}" | |
31 | ||
32 | if ! led_exists "${led}"; then | |
33 | error "LED ${led} does not exist" | |
34 | return ${EXIT_ERROR} | |
35 | fi | |
36 | ||
37 | local triggers="$(fread "/sys/class/leds/${led}/trigger")" | |
38 | ||
39 | # Filter markers for active trigger | |
40 | print "${triggers//[\[\]]/}" | |
41 | } | |
42 | ||
43 | led_set_trigger() { | |
44 | local led="${1}" | |
45 | local trigger="${2}" | |
46 | ||
47 | assert isset led | |
48 | assert isset trigger | |
49 | ||
50 | local supported_triggers="$(led_get_supported_triggers "${led}")" | |
51 | if ! list_match "${trigger}" ${supported_triggers}; then | |
52 | log DEBUG "Trigger ${trigger} is not supported by LED ${led}" | |
53 | return ${EXIT_ERROR} | |
54 | fi | |
55 | ||
56 | log DEBUG "Setting LED trigger ${trigger} for ${led}" | |
57 | fwrite "/sys/class/leds/${led}/trigger" "${trigger}" | |
58 | } |