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/***************************************************************************
* *
* Powersave Daemon *
* *
* Copyright (C) 2004,2005 SUSE Linux Products GmbH *
* *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at you *
* option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License along *
* with this program; if not, write to the Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
* *
***************************************************************************/
#include "string.h"
#include "config.h"
#include "powerlib.h"
#define SLEEP_PROC_FILE "/proc/acpi/sleep"
#define SYSFS_SLEEP_FILE "/sys/power/state"
int64_t getSupportedSleepStates(void)
{
char line[MAX_LINE_SIZE + 1];
int test;
FILE *fp;
int ret = 0;
test = checkACPI();
if (test == ACPI) {
if ((fp = fopen(SLEEP_PROC_FILE, "r")) == NULL) {
pDebug(DBG_INFO, "Could not open '%s'", SLEEP_PROC_FILE);
ret = 0;
} else {
if (fgets(line, MAX_LINE_SIZE, fp) == NULL) {
ret = 0;
} else {
if (strstr(line, "S1") != NULL)
ret |= ACPI_S1;
if (strstr(line, "S2") != NULL)
ret |= ACPI_S2;
if (strstr(line, "S3") != NULL)
ret |= ACPI_S3;
if (strstr(line, "S3_bios") != NULL)
ret |= ACPI_S3_BIOS;
if (strstr(line, "S4") != NULL)
ret |= ACPI_S4;
if (strstr(line, "S4_bios") != NULL)
ret |= ACPI_S4_BIOS;
}
fclose(fp);
}
if (ret == 0) {
if ((fp = fopen(SYSFS_SLEEP_FILE, "r")) == NULL) {
pDebug(DBG_WARN, "Could not open '%s'", SYSFS_SLEEP_FILE);
ret = 0;
} else {
if (fgets(line, MAX_LINE_SIZE, fp) == NULL) {
ret = 0;
} else {
if (strstr(line, "standby") != NULL)
ret |= ACPI_S1;
if (strstr(line, "mem") != NULL)
ret |= ACPI_S3;
if (strstr(line, "disk") != NULL)
ret |= ACPI_S4;
}
fclose(fp);
}
}
} else if (test == APM)
/* do not evaluate APM any further for now */
/* ToDO: are really both supported? */
return APM_STANDBY + APM_SUSPEND;
else {
ret = 0;
}
return ret;
}
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