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#include "diskio.h"
#include "common/io.h"
#include "common/strutil.h"
#include "common/mallocHelper.h"
#include <sys/iostat.h>
#include <sys/sysctl.h>
const char* ffDiskIOGetIoCounters(FFlist* result, FFDiskIOOptions* options) {
int mib[] = { CTL_HW, HW_IOSTATS, sizeof(struct io_sysctl) };
size_t len;
if (sysctl(mib, ARRAY_SIZE(mib), NULL, &len, NULL, 0) < 0) {
return "sysctl({HW_IOSTATS}, NULL) failed";
}
uint32_t nDrive = (uint32_t) (len / sizeof(struct io_sysctl));
FF_AUTO_FREE struct io_sysctl* stats = malloc(len);
if (sysctl(mib, ARRAY_SIZE(mib), stats, &len, NULL, 0) < 0) {
return "sysctl({HW_IOSTATS}, stats) failed";
}
char path[64] = "/dev/";
for (uint32_t i = 0; i < nDrive; ++i) {
struct io_sysctl* st = &stats[i];
if (options->namePrefix.length && strncmp(st->name, options->namePrefix.chars, options->namePrefix.length) != 0) {
continue;
}
// Skip partitions
char* end = ffStrCopy(&path[5], st->name, ARRAY_SIZE(path) - 8);
*end++ = 'c';
*end = '\0';
if (!ffPathExists(path, FF_PATHTYPE_ANY)) {
continue;
}
FFDiskIOResult* device = FF_LIST_ADD(FFDiskIOResult, *result);
ffStrbufInitNS(&device->devPath, (uint32_t) (end - path), path);
ffStrbufInitS(&device->name, st->name);
device->bytesRead = st->rbytes;
device->readCount = st->rxfer;
device->bytesWritten = st->wbytes;
device->writeCount = st->wxfer;
}
return NULL;
}
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