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Add usb gadget support

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This commit is contained in:
Marcel Alexandru Nitan
2023-07-29 13:04:11 +03:00
parent 2bd53ff6c7
commit 88187197c4
8 changed files with 206 additions and 166 deletions
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src/configfsisomanager.cpp
+36 -56
View File
@@ -2,39 +2,31 @@
#include <sys/stat.h>
#include <sys/types.h>
#include "util.h"
#include "configfsisomanager.h"
#include "util.h"
#include <dirent.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
bool supported()
{
return fs_mount_point((char *)"configfs") != nullptr;
}
bool supported() { return fs_mount_point((char *)"configfs") != nullptr; }
char* get_gadget_root()
{
char *configFsRoot = fs_mount_point((char *)"configfs");
char *get_gadget_root() {
char *configFsRoot = fs_mount_point((char *)"configfs");
char *usbGadgetRoot = strjin(configFsRoot, (char *)"/usb_gadget/");
char *gadgetRoot = nullptr;
char *gadgetRoot = nullptr;
struct dirent *entry = nullptr;
DIR *dp = nullptr;
DIR *dp = nullptr;
dp = opendir(usbGadgetRoot);
if (dp != nullptr)
{
while ((entry = readdir(dp)))
{
if (entry->d_name[0] != '.')
{
if (dp != nullptr) {
while ((entry = readdir(dp))) {
if (entry->d_name[0] != '.') {
char *gadget = strjin(usbGadgetRoot, entry->d_name);
if (sysfs_read(strjin(gadget, (char *)"/UDC")) != nullptr)
{
if (sysfs_read(strjin(gadget, (char *)"/UDC")) != nullptr) {
gadgetRoot = gadget;
break;
}
@@ -44,28 +36,23 @@ char* get_gadget_root()
return gadgetRoot;
}
char* get_config_root()
{
char *get_config_root() {
char *gadgetRoot = get_gadget_root();
if (gadgetRoot == nullptr)
{
if (gadgetRoot == nullptr) {
return nullptr;
}
char *usbConfigRoot = strjin(gadgetRoot, (char *)"/configs/");
char *configRoot = nullptr;
char *configRoot = nullptr;
struct dirent *entry = nullptr;
DIR *dp = nullptr;
DIR *dp = nullptr;
dp = opendir(usbConfigRoot);
if (dp != nullptr)
{
while ((entry = readdir(dp)))
{
if (entry->d_name[0] != '.')
{
if (dp != nullptr) {
while ((entry = readdir(dp))) {
if (entry->d_name[0] != '.') {
configRoot = strjin(usbConfigRoot, entry->d_name);
break;
}
@@ -74,58 +61,51 @@ char* get_config_root()
return configRoot;
}
void mount_iso(char *iso_path, char *cdrom, char *ro)
{
void mount_iso(char *iso_path, char *cdrom, char *ro) {
char *gadgetRoot = get_gadget_root();
if (gadgetRoot == nullptr)
{
if (gadgetRoot == nullptr) {
printf("No active gadget found\n");
return;
}
char *configRoot = get_config_root();
char *udc = get_udc();
char *functionRoot = strjin(gadgetRoot, (char *)"/functions");
char *configRoot = get_config_root();
char *udc = get_udc();
char *functionRoot = strjin(gadgetRoot, (char *)"/functions");
char *massStorageRoot = strjin(functionRoot, (char *)"/mass_storage.0");
char *lunRoot = strjin(massStorageRoot, (char *)"/lun.0");
char *lunRoot = strjin(massStorageRoot, (char *)"/lun.0");
char *stallFile = strjin(massStorageRoot, (char *)"/stall");
char *udcFile = strjin(gadgetRoot, (char *)"/UDC");
char *lunFile = strjin(lunRoot, (char *)"/file");
char *lunCdRom = strjin(lunRoot, (char *)"/cdrom");
char *lunRo = strjin(lunRoot, (char *)"/ro");
char *udcFile = strjin(gadgetRoot, (char *)"/UDC");
char *lunFile = strjin(lunRoot, (char *)"/file");
char *lunCdRom = strjin(lunRoot, (char *)"/cdrom");
char *lunRo = strjin(lunRoot, (char *)"/ro");
set_udc((char *)"", gadgetRoot);
if (!isdir(massStorageRoot))
{
if (!isdir(massStorageRoot)) {
mkdir(massStorageRoot, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
}
if (!isdir(strjin(configRoot, (char *)"/mass_storage.0")))
{
if (!isdir(strjin(configRoot, (char *)"/mass_storage.0"))) {
symlink(massStorageRoot, strjin(configRoot, (char *)"/mass_storage.0"));
}
sysfs_write(lunFile, iso_path);
sysfs_write(lunFile, iso_path);
sysfs_write(lunCdRom, cdrom);
sysfs_write(lunRo, ro);
sysfs_write(lunRo, ro);
set_udc(udc, gadgetRoot);
}
void set_udc(char *udc, char *gadget)
{
void set_udc(char *udc, char *gadget) {
char *udcFile = strjin(gadget, (char *)"/UDC");
sysfs_write(udcFile, udc);
}
char* get_udc()
{
char *get_udc() {
char *gadget_root = get_gadget_root();
if (gadget_root == nullptr)
{
if (gadget_root == nullptr) {
return nullptr;
}
char *udcFile = strjin(gadget_root, (char *)"/UDC");