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(platform_linux.c) Use hashing

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This commit is contained in:
twinaphex 2015-06-14 19:22:22 +02:00
parent 0c8baf7e47
commit d3803d0d05
1 changed files with 86 additions and 44 deletions
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130
frontend/drivers/platform_linux.c
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@ -14,8 +14,6 @@
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "../frontend_driver.h"
#include <stdio.h>
#include <stdint.h>
#include <boolean.h>
@ -27,7 +25,11 @@
#include <fcntl.h>
#include <unistd.h>
#include <sys/utsname.h>
#include <compat/strl.h>
#include <rhash.h>
#include "../frontend_driver.h"
static const char *proc_apm_path = "/proc/apm";
static const char *proc_acpi_battery_path = "/proc/acpi/battery";
@ -98,6 +100,17 @@ static bool make_proc_acpi_key_val(char **_ptr, char **_key, char **_val)
return true;
}
#define ACPI_KEY_STATE 0x10614a06U
#define ACPI_KEY_PRESENT 0xc28ac046U
#define ACPI_KEY_CHARGING_STATE 0x5ba13e29U
#define ACPI_KEY_REMAINING_CAPACITY 0xf36952edU
#define ACPI_KEY_DESIGN_CAPACITY 0x05e6488dU
#define ACPI_VAL_CHARGING_DISCHARGING 0xf268327aU
#define ACPI_VAL_CHARGING 0x095ee228U
#define ACPI_VAL_YES 0x0b88c316U
#define ACPI_VAL_ONLINE 0x6842bf17U
static void
check_proc_acpi_battery(const char * node, bool * have_battery,
bool * charging, int *seconds, int *percent)
@ -124,39 +137,53 @@ check_proc_acpi_battery(const char * node, bool * have_battery,
while (make_proc_acpi_key_val(&ptr, &key, &val))
{
if (!strcmp(key, "present"))
{
if (!strcmp(val, "yes"))
*have_battery = true;
}
else if (!strcmp(key, "charging state"))
{
/* !!! FIXME: what exactly _does_ charging/discharging mean? */
if (!strcmp(val, "charging/discharging"))
charge = true;
else if (!strcmp(val, "charging"))
charge = true;
}
else if (!strcmp(key, "remaining capacity"))
{
char *endptr = NULL;
const int cvt = (int) strtol(val, &endptr, 10);
uint32_t key_hash = djb2_calculate(key);
uint32_t val_hash = djb2_calculate(val);
if (*endptr == ' ')
remaining = cvt;
switch (key_hash)
{
case ACPI_KEY_PRESENT:
if (val_hash == ACPI_VAL_YES)
*have_battery = true;
break;
case ACPI_KEY_CHARGING_STATE:
switch (val_hash)
{
case ACPI_VAL_CHARGING_DISCHARGING:
case ACPI_VAL_CHARGING:
charge = true;
break;
}
break;
case ACPI_KEY_REMAINING_CAPACITY:
{
char *endptr = NULL;
const int cvt = (int) strtol(val, &endptr, 10);
if (*endptr == ' ')
remaining = cvt;
}
break;
}
}
ptr = &info[0];
while (make_proc_acpi_key_val(&ptr, &key, &val))
{
if (!strcmp(key, "design capacity"))
{
char *endptr = NULL;
const int cvt = (int) strtol(val, &endptr, 10);
uint32_t key_hash = djb2_calculate(key);
if (*endptr == ' ')
maximum = cvt;
switch (key_hash)
{
case ACPI_KEY_DESIGN_CAPACITY:
{
char *endptr = NULL;
const int cvt = (int) strtol(val, &endptr, 10);
if (*endptr == ' ')
maximum = cvt;
}
break;
}
}
@ -193,6 +220,7 @@ check_proc_acpi_battery(const char * node, bool * have_battery,
}
}
static void
check_proc_acpi_ac_adapter(const char * node, bool *have_ac)
{
@ -208,11 +236,12 @@ check_proc_acpi_ac_adapter(const char * node, bool *have_ac)
ptr = &state[0];
while (make_proc_acpi_key_val(&ptr, &key, &val))
{
if (!strcmp(key, "state"))
{
if (!strcmp(val, "on-line"))
*have_ac = true;
}
uint32_t key_hash = djb2_calculate(key);
uint32_t val_hash = djb2_calculate(val);
if (key_hash == ACPI_KEY_STATE &&
val_hash == ACPI_VAL_ONLINE)
*have_ac = true;
}
}
@ -391,25 +420,38 @@ frontend_linux_get_powerstate(int *seconds, int *percent)
return FRONTEND_POWERSTATE_NONE;
}
#define LINUX_ARCH_X86_64 0x23dea434U
#define LINUX_ARCH_X86 0x0b88b8cbU
#define LINUX_ARCH_ARM 0x0b885ea5U
#define LINUX_ARCH_PPC64 0x1028cf52U
#define LINUX_ARCH_MIPS 0x7c9aa25eU
#define LINUX_ARCH_TILE 0x7c9e7873U
enum frontend_architecture frontend_linux_get_architecture(void)
{
uint32_t buffer_hash;
struct utsname buffer;
if (uname(&buffer) != 0)
return FRONTEND_ARCH_NONE;
if (!strcmp(buffer.machine, "x86_64"))
return FRONTEND_ARCH_X86_64;
if (!strcmp(buffer.machine, "x86"))
return FRONTEND_ARCH_X86;
if (!strcmp(buffer.machine, "arm"))
return FRONTEND_ARCH_ARM;
if (!strcmp(buffer.machine, "ppc64"))
return FRONTEND_ARCH_PPC;
if (!strcmp(buffer.machine, "mips"))
return FRONTEND_ARCH_MIPS;
if (!strcmp(buffer.machine, "tile"))
return FRONTEND_ARCH_TILE;
buffer_hash = djb2_calculate(buffer.machine);
switch (buffer_hash)
{
case LINUX_ARCH_X86_64:
return FRONTEND_ARCH_X86_64;
case LINUX_ARCH_X86:
return FRONTEND_ARCH_X86;
case LINUX_ARCH_ARM:
return FRONTEND_ARCH_ARM;
case LINUX_ARCH_PPC64:
return FRONTEND_ARCH_PPC;
case LINUX_ARCH_MIPS:
return FRONTEND_ARCH_MIPS;
case LINUX_ARCH_TILE:
return FRONTEND_ARCH_TILE;
}
return FRONTEND_ARCH_NONE;
}