FreeBSD: Implement CWD column

freebsd/FreeBSDProcess.c

@@ -46,6 +46,7 @@ const ProcessFieldData Process_fields[LAST_PROCESSFIELD] = {
    [TGID] = { .name = "TGID", .title = "TGID", .description = "Thread group ID (i.e. process ID)", .flags = 0, .pidColumn = true, },
    [PROC_COMM] = { .name = "COMM", .title = "COMM            ", .description = "comm string of the process", .flags = 0, },
    [PROC_EXE] = { .name = "EXE", .title = "EXE             ", .description = "Basename of exe of the process", .flags = 0, },
+   [CWD] = { .name = "CWD", .title = "CWD                       ", .description = "The current working directory of the process", .flags = PROCESS_FLAG_CWD, },
    [JID] = { .name = "JID", .title = "JID", .description = "Jail prison ID", .flags = 0, .pidColumn = true, },
    [JAIL] = { .name = "JAIL", .title = "JAIL        ", .description = "Jail prison name", .flags = 0, },
 };

freebsd/FreeBSDProcessList.c

@@ -395,6 +395,26 @@ static void FreeBSDProcessList_updateExe(const struct kinfo_proc* kproc, Process
    Process_updateExe(proc, buffer);
 }
 
+static void FreeBSDProcessList_updateCwd(const struct kinfo_proc* kproc, Process* proc) {
+   const int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_CWD, kproc->ki_pid };
+   char buffer[2048];
+   size_t size = sizeof(buffer);
+   if (sysctl(mib, 4, 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 FreeBSDProcessList_updateProcessName(kvm_t* kd, const struct kinfo_proc* kproc, Process* proc) {
    Process_updateComm(proc, kproc->ki_comm);
 
@@ -495,6 +515,10 @@ void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
          FreeBSDProcessList_updateExe(kproc, proc);
          FreeBSDProcessList_updateProcessName(fpl->kd, kproc, proc);
 
+         if (settings->flags & PROCESS_FLAG_CWD) {
+            FreeBSDProcessList_updateCwd(kproc, proc);
+         }
+
          fp->jname = FreeBSDProcessList_readJailName(kproc);
 
          proc->tty_nr = kproc->ki_tdev;

freebsd/ProcessField.h

@@ -12,7 +12,7 @@ in the source distribution for its full text.
    JID   = 100,                  \
    JAIL  = 101,                  \
                                  \
-   DUMMY_BUMP_FIELD = PROC_EXE,  \
+   DUMMY_BUMP_FIELD = CWD,       \
    // End of list