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84 lines
2.0 KiB
C++
84 lines
2.0 KiB
C++
#include "terminal.h"
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#include "base/dbus.h"
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#include "base/file.h"
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#include "base/logging.h"
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#include "base/strings.h"
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#include <fcntl.h>
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#include <linux/kd.h>
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#include <linux/vt.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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using namespace cutefish;
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namespace dm {
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static int openVt(int vt)
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{
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return ::open(("/dev/tty" + std::to_string(vt)).c_str(), O_RDWR | O_NOCTTY | O_CLOEXEC);
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}
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bool setGraphicsMode(int vt)
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{
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const int fd = openVt(vt);
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if (fd < 0)
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return false;
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const bool set = ioctl(fd, KDSETMODE, KD_GRAPHICS) == 0;
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::close(fd);
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return set;
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}
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void restoreTextMode(int vt)
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{
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const int fd = openVt(vt);
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if (fd < 0)
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return;
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vt_mode mode {};
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int kdMode = KD_TEXT;
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if (ioctl(fd, VT_GETMODE, &mode) == 0 && mode.mode == VT_AUTO
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&& ioctl(fd, KDGETMODE, &kdMode) == 0 && kdMode == KD_GRAPHICS)
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ioctl(fd, KDSETMODE, KD_TEXT);
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::close(fd);
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}
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bool isControlled(int vt)
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{
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const int fd = openVt(vt);
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if (fd < 0)
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return false;
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vt_mode mode {};
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const bool controlled = ioctl(fd, VT_GETMODE, &mode) == 0 && mode.mode == VT_PROCESS;
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::close(fd);
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return controlled;
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}
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int activeVt()
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{
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const std::optional<std::string> active = base::file::read("/sys/class/tty/tty0/active");
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if (!active)
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return 0;
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const std::string_view name = base::strings::trimmed(*active);
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return name.size() > 3 ? base::strings::toNumber<int>(name.substr(3)).value_or(0) : 0;
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}
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bool activateSession(const std::string &sessionId)
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{
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const base::dbus::Proxy manager(base::dbus::Connection::system(), "org.freedesktop.login1",
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"/org/freedesktop/login1", "org.freedesktop.login1.Manager");
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const base::dbus::Reply reply = manager.call("ActivateSession", sessionId);
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if (reply.isError())
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CF_WARNING(base::LogCategory::defaultCategory())
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<< "Cannot activate session" << sessionId << reply.error().message;
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return !reply.isError();
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}
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} // namespace dm
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