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isodrive: remove getprop depedency, allow switching cdrom and ro modes

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This commit is contained in:
Marcel Alexandru Nitan
2023-02-04 15:48:32 +02:00
parent 428659298b
commit fe880c156f
6 changed files with 95 additions and 65 deletions
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85
src/configfsisomanager.cpp
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@@ -8,12 +8,16 @@
#include <unistd.h>
#include <string.h>
bool supported()
{
return fs_mount_point((char*)"configfs") != nullptr;
}
char *get_gadget_root()
{
char *configFsRoot = fs_mount_point("configfs");
char *usbGadgetRoot = strjin(configFsRoot, "/usb_gadget/");
char *configFsRoot = fs_mount_point((char*)"configfs");
char *usbGadgetRoot = strjin(configFsRoot, (char*)"/usb_gadget/");
char *gadgetRoot = nullptr;
char *udc = nullptr;
struct dirent *entry = nullptr;
DIR *dp = nullptr;
@@ -23,10 +27,12 @@ char *get_gadget_root()
{
if (entry->d_name[0] != '.')
{
gadgetRoot = strjin(usbGadgetRoot, entry->d_name);
udc = sysfs_read(strjin(gadgetRoot, "/UDC"));
if (strcmp(udc, getprop("sys.usb.controller")) == 0)
char *gadget = strjin(usbGadgetRoot, entry->d_name);
if (sysfs_read(strjin(gadget, (char*)"/UDC")) != nullptr)
{
gadgetRoot = gadget;
break;
}
}
}
return gadgetRoot;
@@ -35,7 +41,11 @@ char *get_gadget_root()
char *get_config_root()
{
char *gadgetRoot = get_gadget_root();
char *usbConfigRoot = strjin(gadgetRoot, "/configs/");
if (gadgetRoot == nullptr)
{
return nullptr;
}
char *usbConfigRoot = strjin(gadgetRoot, (char*)"/configs/");
char *configRoot = nullptr;
struct dirent *entry = nullptr;
@@ -53,48 +63,57 @@ char *get_config_root()
return configRoot;
}
void mount_iso(char *iso_path)
void mount_iso(char *iso_path, char *cdrom, char *ro)
{
char *gadgetRoot = get_gadget_root();
if (gadgetRoot == nullptr)
{
std::cerr << "No active gadget found" << std::endl;
return;
}
char *configRoot = get_config_root();
char *functionRoot = strjin(gadgetRoot, "/functions");
char *massStorageRoot = strjin(functionRoot, "/mass_storage.0");
char *lunRoot = strjin(massStorageRoot, "/lun.0");
char *udc = get_udc();
printf("udc found %s\n", udc);
char *functionRoot = strjin(gadgetRoot, (char*)"/functions");
char *massStorageRoot = strjin(functionRoot, (char*)"/mass_storage.0");
char *lunRoot = strjin(massStorageRoot, (char*)"/lun.0");
char *stallFile = strjin(massStorageRoot, "/stall");
char *udcFile = strjin(gadgetRoot, "/UDC");
char *lunFile = strjin(lunRoot, "/file");
char *lunCdRom = strjin(lunRoot, "/cdrom");
char *lunRo = strjin(lunRoot, "/ro");
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");
reset_udc();
set_udc((char*)"", gadgetRoot);
if (!isdir(massStorageRoot))
{
mkdir(massStorageRoot, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
}
if (!isdir(strjin(configRoot, "/mass_storage.0")))
if (!isdir(strjin(configRoot, (char*)"/mass_storage.0")))
{
symlink(massStorageRoot, strjin(configRoot, "/mass_storage.0"));
symlink(massStorageRoot, strjin(configRoot, (char*)"/mass_storage.0"));
}
sysfs_write(lunFile, iso_path);
sysfs_write(lunCdRom, "0");
sysfs_write(lunRo, "1");
sysfs_write(lunCdRom, cdrom);
sysfs_write(lunRo, ro);
set_udc();
set_udc(udc, gadgetRoot);
}
void reset_udc()
void set_udc(char *udc, char *gadget)
{
char *udcFile = strjin(gadget, (char*)"/UDC");
sysfs_write(udcFile, udc);
}
char *get_udc()
{
char *gadget_root = get_gadget_root();
char *udcFile = strjin(gadget_root, "/UDC");
sysfs_write(udcFile, "");
}
void set_udc()
{
char *gadget_root = get_gadget_root();
char *udcFile = strjin(gadget_root, "/UDC");
sysfs_write(udcFile, getprop("sys.usb.controller"));
if (gadget_root == nullptr)
{
return nullptr;
}
char *udcFile = strjin(gadget_root, (char*)"/UDC");
return sysfs_read(udcFile);
}