From 5e92956abc23ffe1992a28eb02e8c157509542d1 Mon Sep 17 00:00:00 2001
From: Benny Baumann <BenBE@geshi.org>
Date: Tue, 25 May 2021 19:08:14 +0200
Subject: [PATCH] OpenBSD: Implement CWD column

---
 openbsd/OpenBSDProcess.c     |  6 ++++++
 openbsd/OpenBSDProcessList.c | 24 ++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/openbsd/OpenBSDProcess.c b/openbsd/OpenBSDProcess.c
index 58e2d52b..90994a70 100644
--- a/openbsd/OpenBSDProcess.c
+++ b/openbsd/OpenBSDProcess.c
@@ -193,6 +193,12 @@ const ProcessFieldData Process_fields[LAST_PROCESSFIELD] = {
       .description = "comm string of the process",
       .flags = 0,
    },
+   [CWD] = {
+      .name = "CWD",
+      .title = "CWD                       ",
+      .description = "The current working directory of the process",
+      .flags = PROCESS_FLAG_CWD,
+   },
 
 };
 
diff --git a/openbsd/OpenBSDProcessList.c b/openbsd/OpenBSDProcessList.c
index 03c22793..4e885b3c 100644
--- a/openbsd/OpenBSDProcessList.c
+++ b/openbsd/OpenBSDProcessList.c
@@ -171,6 +171,26 @@ static void OpenBSDProcessList_scanMemoryInfo(ProcessList* pl) {
    }
 }
 
+static void OpenBSDProcessList_updateCwd(const struct kinfo_proc* kproc, Process* proc) {
+   const int mib[] = { CTL_KERN, KERN_PROC_CWD, kproc->ki_pid };
+   char buffer[2048];
+   size_t size = sizeof(buffer);
+   if (sysctl(mib, 3, buffer, &size, NULL, 0) != 0) {
+      free(proc->procCwd);
+      proc->procCwd = NULL;
+      return;
+   }
+
+   /* Kernel threads return an empty buffer */
+   if (buffer[0] == '\0') {
+      free(proc->procCwd);
+      proc->procCwd = NULL;
+      return;
+   }
+
+   free_and_xStrdup(&proc->procCwd, buffer);
+}
+
 static void OpenBSDProcessList_updateProcessName(kvm_t* kd, const struct kinfo_proc* kproc, Process* proc) {
    Process_updateComm(proc, kproc->p_comm);
 
@@ -272,6 +292,10 @@ static void OpenBSDProcessList_scanProcs(OpenBSDProcessList* this) {
 
          OpenBSDProcessList_updateProcessName(this->kd, kproc, proc);
 
+         if (settings->flags & PROCESS_FLAG_CWD) {
+            OpenBSDProcessList_updateCwd(kproc, proc);
+         }
+
          proc->tty_nr = kproc->p_tdev;
          const char* name = ((dev_t)kproc->p_tdev != NODEV) ? devname(kproc->p_tdev, S_IFCHR) : NULL;
          if (!name || String_eq(name, "??")) {