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module/battery: don’t crash if we fail to read from ‘status’

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Daniel Eklöf 2020-11-10 22:26:49 +01:00
parent f49652130d
commit 4a9f550069
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1 changed files with 4 additions and 1 deletions
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modules/battery.c
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@ -291,7 +291,10 @@ update_status(struct module *mod, int capacity_fd, int energy_fd, int power_fd,
const char *status = readline_from_fd(status_fd);
enum state state;
if (strcmp(status, "Full") == 0)
if (status == NULL) {
LOG_WARN("failed to read battery state");
state = STATE_DISCHARGING;
} else if (strcmp(status, "Full") == 0)
state = STATE_FULL;
else if (strcmp(status, "Charging") == 0)
state = STATE_CHARGING;