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Implement ListDevices for Linux.

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This commit is contained in:
Natalia Portillo
2019-10-13 04:47:00 +01:00
parent 321cd275ee
commit 9d1b0d7670
3 changed files with 296 additions and 4 deletions
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288
linux/list_devices.c
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@@ -16,8 +16,294 @@
*/
#include "../dicmote.h"
#include "linux.h"
#include <ctype.h>
#include <dirent.h>
#include <libudev.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
DeviceInfoList* linux_list_devices()
{
return 0;
DIR* dir;
struct dirent* dirent;
struct udev* udev;
int hasUdev = false, i;
DeviceInfoList * listStart = NULL, *listCurrent = NULL, *listNext = NULL;
struct udev_device* udev_device;
const char* tmpString;
FILE* file;
char* line_str;
size_t n, ret;
char* chrptr;
udev = udev_new();
hasUdev = udev != 0;
dir = opendir(PATH_SYS_DEVBLOCK);
if(!dir) return NULL;
dirent = readdir(dir);
while(dirent)
{
if(dirent->d_type != DT_REG && dirent->d_type != DT_LNK)
{
dirent = readdir(dir);
continue;
}
listNext = malloc(sizeof(DeviceInfoList));
memset(listNext, 0, sizeof(DeviceInfoList));
if(!listNext)
{
closedir(dir);
if(hasUdev) udev_unref(udev);
return listStart;
}
if(!listStart) listStart = listNext;
if(listCurrent) listCurrent->next = listNext;
snprintf(listNext->this.path, 1024, "/dev/%s", dirent->d_name);
if(hasUdev)
{
udev_device = udev_device_new_from_subsystem_sysname(udev, "block", dirent->d_name);
if(udev_device)
{
tmpString = udev_device_get_property_value(udev_device, "ID_VENDOR");
if(tmpString)
{
strncpy(listNext->this.vendor, tmpString, 256);
free((void*)tmpString);
}
tmpString = udev_device_get_property_value(udev_device, "ID_MODEL");
if(tmpString)
{
strncpy(listNext->this.model, tmpString, 256);
free((void*)tmpString);
for(i = 0; i < 256; i++)
{
if(listNext->this.model[i] == 0) break;
if(listNext->this.model[i] == '_') listNext->this.model[i] = ' ';
}
}
tmpString = udev_device_get_property_value(udev_device, "ID_SCSI_SERIAL");
if(tmpString)
{
strncpy(listNext->this.serial, tmpString, 256);
free((void*)tmpString);
}
else
{
tmpString = udev_device_get_property_value(udev_device, "ID_SERIAL_SHORT");
if(tmpString)
{
strncpy(listNext->this.serial, tmpString, 256);
free((void*)tmpString);
}
}
tmpString = udev_device_get_property_value(udev_device, "ID_BUS");
if(tmpString)
{
strncpy(listNext->this.bus, tmpString, 256);
free((void*)tmpString);
}
}
}
tmpString = malloc(1024);
memset((void*)tmpString, 0, 1024);
snprintf((char*)tmpString, 1024, "%s/%s/device/vendor", PATH_SYS_DEVBLOCK, dirent->d_name);
if(access(tmpString, R_OK) == 0 && strlen(listNext->this.vendor) == 0)
{
file = fopen(tmpString, "rb");
if(file != NULL)
{
line_str = malloc(256);
memset(line_str, 0, 256);
n = 256;
ret = getline(&line_str, &n, file);
if(ret > 0 && line_str != NULL)
{
strncpy(listNext->this.vendor, line_str, 256);
for(i = 255; i >= 0; i--)
{
if(listNext->this.vendor[i] == 0)
continue;
else if(listNext->this.vendor[i] == 0x0A || listNext->this.vendor[i] == 0x0D ||
listNext->this.vendor[i] == ' ')
listNext->this.vendor[i] = 0;
else
break;
}
}
free(line_str);
fclose(file);
}
}
else if(strncmp(dirent->d_name, "loop", 4) == 0)
{
strncpy(listNext->this.vendor, "Linux", 256);
}
free((void*)tmpString);
tmpString = malloc(1024);
memset((void*)tmpString, 0, 1024);
snprintf((char*)tmpString, 1024, "%s/%s/device/model", PATH_SYS_DEVBLOCK, dirent->d_name);
if(access(tmpString, R_OK) == 0 &&
(strlen(listNext->this.model) == 0 || strncmp(listNext->this.bus, "ata", 3) == 0))
{
file = fopen(tmpString, "rb");
if(file != NULL)
{
line_str = malloc(256);
memset(line_str, 0, 256);
n = 256;
ret = getline(&line_str, &n, file);
if(ret > 0 && line_str != NULL)
{
strncpy(listNext->this.model, line_str, 256);
for(i = 255; i >= 0; i--)
{
if(listNext->this.model[i] == 0)
continue;
else if(listNext->this.model[i] == 0x0A || listNext->this.model[i] == 0x0D ||
listNext->this.model[i] == ' ')
listNext->this.model[i] = 0;
else
break;
}
}
free(line_str);
fclose(file);
}
}
else if(strncmp(dirent->d_name, "loop", 4) == 0)
{
strncpy(listNext->this.model, "Linux", 256);
}
free((void*)tmpString);
tmpString = malloc(1024);
memset((void*)tmpString, 0, 1024);
snprintf((char*)tmpString, 1024, "%s/%s/device/serial", PATH_SYS_DEVBLOCK, dirent->d_name);
if(access(tmpString, R_OK) == 0 && (strlen(listNext->this.serial) == 0))
{
file = fopen(tmpString, "rb");
if(file != NULL)
{
line_str = malloc(256);
memset(line_str, 0, 256);
n = 256;
ret = getline(&line_str, &n, file);
if(ret > 0 && line_str != NULL)
{
strncpy(listNext->this.serial, line_str, 256);
for(i = 255; i >= 0; i--)
{
if(listNext->this.serial[i] == 0)
continue;
else if(listNext->this.serial[i] == 0x0A || listNext->this.serial[i] == 0x0D ||
listNext->this.serial[i] == ' ')
listNext->this.serial[i] = 0;
else
break;
}
}
free(line_str);
fclose(file);
}
}
free((void*)tmpString);
if(strlen(listNext->this.vendor) == 0 || strncmp(listNext->this.vendor, "ATA", 3) == 0)
{
if(strlen(listNext->this.model) > 0)
{
tmpString = malloc(256);
strncpy((void*)tmpString, listNext->this.model, 256);
chrptr = strchr(tmpString, ' ');
if(chrptr)
{
memset(&listNext->this.vendor, 0, 256);
memset(&listNext->this.model, 0, 256);
strncpy(listNext->this.vendor, tmpString, chrptr - tmpString);
strncpy(listNext->this.model, chrptr + 1, 256 - (chrptr - tmpString) - 1);
}
free((void*)tmpString);
}
}
// TODO: Get better device type from sysfs paths
if(strlen(listNext->this.bus) == 0)
{
if(strncmp(dirent->d_name, "loop", 4) == 0)
strncpy(listNext->this.bus, "loop", 4);
else if(strncmp(dirent->d_name, "nvme", 4) == 0)
strncpy(listNext->this.bus, "NVMe", 4);
else if(strncmp(dirent->d_name, "mmc", 3) == 0)
strncpy(listNext->this.bus, "MMC/SD", 6);
}
else
{
for(i = 0; i < 256; i++)
{
if(listNext->this.bus[i] == 0) break;
listNext->this.bus[i] = (char)toupper(listNext->this.bus[i]);
}
}
if(strncmp(listNext->this.bus, "ATA", 3) == 0 || strncmp(listNext->this.bus, "ATAPI", 5) == 0 ||
strncmp(listNext->this.bus, "SCSI", 4) == 0 || strncmp(listNext->this.bus, "USB", 3) == 0 ||
strncmp(listNext->this.bus, "PCMCIA", 6) == 0 || strncmp(listNext->this.bus, "FireWire", 8) == 0 ||
strncmp(listNext->this.bus, "MMC/SD", 6) == 0)
listNext->this.supported = true;
else
listNext->this.supported = false;
listCurrent = listNext;
dirent = readdir(dir);
}
closedir(dir);
if(hasUdev) udev_unref(udev);
return listStart;
}