2 files changed, 82 insertions, 0 deletions
diff --git a/src/process/apple.cpp b/src/process/apple.cpp
new file mode 100644
index 0000000..bf9f831
--- /dev/null
+++ b/src/process/apple.cpp
@@ -0,0 +1,43 @@
+// Display images inside a terminal
+// Copyright (C) 2023  JustKidding
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "os.hpp"
+#include "process.hpp"
+#include "tmux.hpp"
+#include "util.hpp"
+
+#include <fmt/format.h>
+#include <libproc.h>
+#include <sys/types.h>
+
+Process::Process(int pid)
+    : pid(pid)
+{
+    struct proc_bsdshortinfo sproc;
+    struct proc_bsdinfo proc;
+
+    int status = proc_pidinfo(pid, PROC_PIDT_SHORTBSDINFO, 0, &sproc, PROC_PIDT_SHORTBSDINFO_SIZE);
+    if (status == PROC_PIDT_SHORTBSDINFO_SIZE) {
+        ppid = static_cast<int>(sproc.pbsi_ppid);
+    }
+
+    status = proc_pidinfo(pid, PROC_PIDTBSDINFO, 0, &proc, PROC_PIDTBSDINFO_SIZE);
+    if (status == PROC_PIDTBSDINFO_SIZE) {
+        tty_nr = static_cast<int>(proc.e_tdev);
+        minor_dev = minor(tty_nr);
+        pty_path = fmt::format("/dev/ttys{:0>3}", minor_dev);
+    }
+}
diff --git a/src/process/linux.cpp b/src/process/linux.cpp
new file mode 100644
index 0000000..9dbe05c
--- /dev/null
+++ b/src/process/linux.cpp
@@ -0,0 +1,39 @@
+// Display images inside a terminal
+// Copyright (C) 2023  JustKidding
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "process.hpp"
+
+#include <fmt/format.h>
+#include <fstream>
+#include <limits>
+#if defined(__FreeBSD__) || defined(__NetBSD__)
+#  include <sys/types.h>
+#else
+#  include <sys/sysmacros.h>
+#endif
+
+constexpr auto max_size = std::numeric_limits<std::streamsize>::max();
+
+Process::Process(int pid)
+    : pid(pid)
+{
+    const auto stat = fmt::format("/proc/{}/stat", pid);
+    std::ifstream ifs(stat);
+    ifs.ignore(max_size, ')'); // skip pid and executable name
+    ifs >> state >> ppid >> process_group_id >> session_id >> tty_nr;
+    minor_dev = minor(tty_nr); // NOLINT
+    pty_path = fmt::format("/dev/pts/{}", minor_dev);
+}