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feat(kernel/driver): add CreateDeviceFile method

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Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
EnderIce2 2025-03-02 21:30:15 +00:00
parent f31d11f7ad
commit 1af2cf657d
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2 changed files with 39 additions and 0 deletions
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37
Kernel/core/driver/daemon.cpp
View File

@ -747,6 +747,43 @@ namespace Driver
ReturnLogError(-1, "No available slots for device %d", DriverID);
}
dev_t Manager::CreateDeviceFile(dev_t DriverID, const char *name, mode_t mode, const InodeOperations *Operations)
{
std::unordered_map<dev_t, Driver::DriverObject> &drivers = DriverManager->GetDrivers();
const auto it = drivers.find(DriverID);
if (it == drivers.end())
ReturnLogError(-EINVAL, "Driver %d not found", DriverID);
const Driver::DriverObject *drv = &it->second;
auto dop = drv->DeviceOperations;
for (size_t i = 0; i < 128; i++)
{
const auto dOps = dop->find(i);
if (dOps != dop->end())
continue;
FileNode *node = fs->GetByPath(name, devNode);
if (node)
ReturnLogError(-EEXIST, "Device file %s already exists", name);
node = fs->Create(devNode, name, mode);
if (node == nullptr)
ReturnLogError(-ENOMEM, "Failed to create device file %s", name);
node->Node->SetDevice(DriverID, i);
DriverHandlers dh{};
dh.Ops = Operations;
dh.Node = node->Node;
dh.InputReports = new RingBuffer<InputReport>(16);
dop->insert({i, std::move(dh)});
return i;
}
ReturnLogError(-1, "No available slots for device %d", DriverID);
return -1; /* -Werror=return-type */
}
int Manager::UnregisterDevice(dev_t DriverID, dev_t Device)
{
std::unordered_map<dev_t, Driver::DriverObject> &drivers =

2
Kernel/include/driver.hpp
View File

@ -149,6 +149,8 @@ namespace Driver
*/
dev_t CreateIncrementalDevice(dev_t DriverID, const std::string &Prefix, mode_t Mode, InodeOperations *Ops);
dev_t CreateDeviceFile(dev_t DriverID, const char *name, mode_t mode, const InodeOperations *Operations);
dev_t RegisterDevice(dev_t DriverID, DeviceType Type, const InodeOperations *Operations);
int ReportInputEvent(dev_t DriverID, InputReport *Report);