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#include "physicaldisk.h"
#include "common/io.h"
#include "common/properties.h"
#include "common/strutil.h"
#include <ctype.h>
#include <limits.h>
#include <unistd.h>
#include <fcntl.h>
static double detectNvmeTemp(int devfd) {
char pathHwmon[] = "hwmon$/temp1_input";
for (char c = '0'; c <= '9'; c++) // hopefully there's only one digit
{
pathHwmon[strlen("hwmon")] = c;
char buffer[64];
ssize_t size = ffReadFileDataRelative(devfd, pathHwmon, ARRAY_SIZE(buffer), buffer);
if (size > 0) {
buffer[size] = '\0';
double temp = strtod(buffer, NULL);
return temp > 0 && temp < 10000000 /*VMware*/ ? temp / 1000 : FF_PHYSICALDISK_TEMP_UNSET;
}
}
return FF_PHYSICALDISK_TEMP_UNSET;
}
static void parsePhysicalDisk(int dfd, const char* devName, FFPhysicalDiskOptions* options, FFlist* result) {
uint64_t size = 0;
{
char blkSize[32];
ssize_t fileSize = ffReadFileDataRelative(dfd, "size", ARRAY_SIZE(blkSize) - 1, blkSize);
if (fileSize > 0) {
blkSize[fileSize] = 0;
size = (uint64_t) strtoul(blkSize, NULL, 10) * 512;
}
}
FFPhysicalDiskType type = FF_PHYSICALDISK_TYPE_NONE;
if (size == 0) {
if (options->hideType & FF_PHYSICALDISK_TYPE_UNUSED) {
return;
}
type |= FF_PHYSICALDISK_TYPE_UNUSED;
}
int devfd = openat(dfd, "device", O_RDONLY | O_CLOEXEC | O_PATH | O_DIRECTORY);
if (devfd < 0) {
if (options->hideType & FF_PHYSICALDISK_TYPE_VIRTUAL) {
return;
}
type |= FF_PHYSICALDISK_TYPE_VIRTUAL;
}
FF_STRBUF_AUTO_DESTROY name = ffStrbufCreate();
if (devfd > 0) {
if (ffAppendFileBufferRelative(devfd, "vendor", &name)) {
ffStrbufTrimRightSpace(&name);
if (name.length > 0) {
ffStrbufAppendC(&name, ' ');
}
}
ffAppendFileBufferRelative(devfd, "model", &name);
ffStrbufTrimRightSpace(&name);
if (name.length == 0) {
ffStrbufSetS(&name, devName);
}
if (ffStrStartsWith(devName, "nvme")) {
int devid, nsid;
if (sscanf(devName, "nvme%dn%d", &devid, &nsid) == 2) {
bool multiNs = nsid > 1;
if (!multiNs) {
char pathSysBlock[32];
snprintf(pathSysBlock, ARRAY_SIZE(pathSysBlock), "/dev/nvme%dn2", devid);
multiNs = access(pathSysBlock, F_OK) == 0;
}
if (multiNs) {
// In Asahi Linux, there are multiple namespaces for the same NVMe drive.
ffStrbufAppendF(&name, " - %d", nsid);
}
}
}
if (options->namePrefix.length && !ffStrbufStartsWith(&name, &options->namePrefix)) {
return;
}
} else {
ffStrbufSetS(&name, devName);
}
FFPhysicalDiskResult* device = FF_LIST_ADD(FFPhysicalDiskResult, *result);
ffStrbufInitMove(&device->name, &name);
ffStrbufInitF(&device->devPath, "/dev/%s", devName);
ffStrbufInit(&device->serial);
ffStrbufInit(&device->revision);
ffStrbufInit(&device->interconnect);
device->type = type;
device->size = size;
device->temperature = FF_PHYSICALDISK_TEMP_UNSET;
bool isVirtio = false;
if (devfd > 0) {
if (ffStrStartsWith(devName, "nvme")) {
ffStrbufSetStatic(&device->interconnect, "NVMe");
} else if (ffStrStartsWith(devName, "mmcblk")) {
ffStrbufSetStatic(&device->interconnect, "MMC");
} else {
char pathSysDeviceLink[64];
snprintf(pathSysDeviceLink, ARRAY_SIZE(pathSysDeviceLink), "/sys/block/%s/device", devName);
char pathSysDeviceReal[PATH_MAX];
if (realpath(pathSysDeviceLink, pathSysDeviceReal)) {
if (strstr(pathSysDeviceReal, "/usb") != NULL) {
ffStrbufSetStatic(&device->interconnect, "USB");
} else if (strstr(pathSysDeviceReal, "/ata") != NULL) {
ffStrbufSetStatic(&device->interconnect, "ATA");
} else if (strstr(pathSysDeviceReal, "/scsi") != NULL) {
ffStrbufSetStatic(&device->interconnect, "SCSI");
} else if (strstr(pathSysDeviceReal, "/nvme") != NULL) {
ffStrbufSetStatic(&device->interconnect, "NVMe");
} else if (strstr(pathSysDeviceReal, "/virtio") != NULL) {
ffStrbufSetStatic(&device->interconnect, "VirtIO");
isVirtio = true; // VirtIO devices are virtual, but we still want to report it
} else {
if (ffAppendFileBufferRelative(devfd, "transport", &device->interconnect)) {
ffStrbufTrimRightSpace(&device->interconnect);
}
}
}
}
} else {
ffStrbufSetStatic(&device->interconnect, "Virtual");
}
if (devfd > 0 && !isVirtio) {
char isRotationalChar = '1';
if (ffReadFileDataRelative(dfd, "queue/rotational", 1, &isRotationalChar) > 0) {
device->type |= isRotationalChar == '1' ? FF_PHYSICALDISK_TYPE_HDD : FF_PHYSICALDISK_TYPE_SSD;
}
if (ffReadFileBufferRelative(devfd, "serial", &device->serial)) {
ffStrbufTrimSpace(&device->serial);
}
if (ffReadFileBufferRelative(devfd, "firmware_rev", &device->revision) ||
ffReadFileBufferRelative(devfd, "rev", &device->revision)) {
ffStrbufTrimRightSpace(&device->revision);
}
if (options->temp) {
device->temperature = detectNvmeTemp(devfd);
}
}
{
char removableChar = '0';
if (ffReadFileDataRelative(dfd, "removable", 1, &removableChar) > 0) {
device->type |= removableChar == '1' ? FF_PHYSICALDISK_TYPE_REMOVABLE : FF_PHYSICALDISK_TYPE_FIXED;
}
}
{
char roChar = '0';
if (ffReadFileDataRelative(dfd, "ro", 1, &roChar) > 0) {
device->type |= roChar == '1' ? FF_PHYSICALDISK_TYPE_READONLY : FF_PHYSICALDISK_TYPE_READWRITE;
}
}
}
const char* ffDetectPhysicalDisk(FFlist* result, FFPhysicalDiskOptions* options) {
FF_AUTO_CLOSE_DIR DIR* sysBlockDirp = opendir("/sys/block/");
if (sysBlockDirp == NULL) {
return "opendir(\"/sys/block/\") == NULL";
}
struct dirent* sysBlockEntry;
while ((sysBlockEntry = readdir(sysBlockDirp)) != NULL) {
const char* const devName = sysBlockEntry->d_name;
if (devName[0] == '.') {
continue;
}
char pathSysBlock[sizeof("/sys/block/") + sizeof(sysBlockEntry->d_name)];
snprintf(pathSysBlock, ARRAY_SIZE(pathSysBlock), "/sys/block/%s", devName);
int dfd = openat(dirfd(sysBlockDirp), devName, O_RDONLY | O_CLOEXEC | O_PATH | O_DIRECTORY);
if (dfd > 0) {
parsePhysicalDisk(dfd, devName, options, result);
}
}
return NULL;
}
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