> Gadi, do you have a /proc/ide version of the S.M.A.R.T. demo?
>
> -ml
Yes, the following code is using /proc/ide/hdx/smart*.
Gadi
/*
* ide-smart.c
*
* usage: ide-smart /dev/hdx
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <linux/hdreg.h>
#include <linux/types.h>
#define NR_ATTRIBUTES 30
typedef struct threshold_s {
__u8 id;
__u8 threshold;
__u8 reserved[10];
} __attribute__ ((packed)) threshold_t;
typedef struct thresholds_s {
__u16 revision;
threshold_t thresholds[NR_ATTRIBUTES];
__u8 reserved[18];
__u8 vendor[131];
__u8 checksum;
} __attribute__ ((packed)) thresholds_t;
typedef struct value_s {
__u8 id;
__u16 status;
__u8 value;
__u8 vendor[8];
} __attribute__ ((packed)) value_t;
typedef struct values_s {
__u16 revision;
value_t values[NR_ATTRIBUTES];
__u8 offline_status;
__u8 vendor1;
__u16 offline_timeout;
__u8 vendor2;
__u8 offline_capability;
__u16 smart_capability;
__u8 reserved[16];
__u8 vendor[125];
__u8 checksum;
} __attribute__ ((packed)) values_t;
#define NR_OFFLINE_TEXTS 5
struct {
__u8 value;
char *text;
} offline_status_text[NR_OFFLINE_TEXTS] = {
{ 0x00, "NeverStarted" },
{ 0x02, "Completed" },
{ 0x04, "Suspended" },
{ 0x05, "Aborted" },
{ 0x06, "Failed" }
};
values_t values;
thresholds_t thresholds;
char basename[80] = "/proc/ide/";
static char *get_offline_text(int status)
{
int i;
for (i = 0; i < NR_OFFLINE_TEXTS; i++)
if (offline_status_text[i].value == status)
return offline_status_text[i].text;
return "unknown";
}
static int read_ascii(char *name, __u16 *buffer)
{
FILE *fp;
__u16 c, i, tmp;
if ((fp = fopen(name, "r")) == NULL) {
fprintf(stderr, "failed to open %s\n", name);
return 1;
}
for (i = 0; i < 256; i++)
if (fscanf(fp, "%04hx%c", buffer + i, &c) != 2) {
fprintf(stderr, "failed to read from %s\n", name);
fclose(fp);
return 1;
}
fclose(fp);
return 0;
}
static int smart_read_values(void)
{
char name[80];
return read_ascii(strcat(strcpy(name, basename), "/smart_values"), (__u16 *) &values);
}
static void print_value(value_t *p, threshold_t *t)
{
if (!p->id || !t->id || p->id != t->id)
return;
printf("Id=%3d, Status=%2d {%s , %s}, Value=%3d, Threshold=%3d, %s\n", p->id, p->status,
p->status & 1 ? "PreFailture" : "Advisory ",
p->status & 2 ? "OnLine " : "OffLine",
p->value, t->threshold,
p->value > t->threshold ? "Passed" : "Failed");
}
static void print_values(values_t *p, thresholds_t *t)
{
value_t *value = p->values;
threshold_t *threshold = t->thresholds;
int i;
printf("\n");
for (i = 0; i < NR_ATTRIBUTES; i++)
print_value(value++, threshold++);
printf("OffLineStatus=%d {%s}, AutoOffLine=%s, OffLineTimeout=%d minutes\n",
p->offline_status, get_offline_text(p->offline_status & 0x7f),
p->offline_status & 0x80 ? "Yes" : "No",
p->offline_timeout / 60);
printf("OffLineCapability=%d {%s %s %s}\n", p->offline_capability,
p->offline_capability & 1 ? "Immediate" : "",
p->offline_capability & 2 ? "Auto" : "",
p->offline_capability & 4 ? "AbortOnCmd" : "SuspendOnCmd");
printf("SmartRevision=%d, CheckSum=%d, SmartCapability=%d {%s %s}\n",
p->revision, p->checksum, p->smart_capability,
p->smart_capability & 1 ? "SaveOnStandBy" : "",
p->smart_capability & 2 ? "AutoSave" : "");
printf("\n");
}
static void print_threshold(threshold_t *p)
{
if (!p->id)
return;
printf("Id=%3d, Threshold=%3d\n", p->id, p->threshold);
}
static void print_thresholds(thresholds_t *p)
{
threshold_t *threshold = p->thresholds;
int i;
printf("\n");
printf("SmartRevision=%d\n", p->revision);
for (i = 0; i < NR_ATTRIBUTES; i++)
print_threshold(threshold++);
printf("CheckSum=%d\n", p->checksum);
printf("\n");
}
static int smart_read_thresholds(void)
{
char name[80];
return read_ascii(strcat(strcpy(name, basename), "/smart_thresholds"), (__u16 *) &thresholds);
}
int main(int argc, char *argv[])
{
if (argc != 2 || strstr(argv[1], "hd") == NULL) {
printf("usage: ide-smart /dev/hdx\n");
return 0;
}
strncat(basename, strstr(argv[1], "hd"), 3);
if (smart_read_values())
return 0;
if (smart_read_thresholds())
return 0;
print_values(&values, &thresholds);
return 0;
}
-
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