diff --git a/include/boost/process/v2/posix/default_launcher.hpp b/include/boost/process/v2/posix/default_launcher.hpp
index 625be154..42a9d6f8 100644
--- a/include/boost/process/v2/posix/default_launcher.hpp
+++ b/include/boost/process/v2/posix/default_launcher.hpp
@@ -29,7 +29,7 @@
 #include <unistd.h>
 
 
-#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__APPLE__) || defined(__MACH__)
+#if defined(__APPLE__) || defined(__MACH__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
 extern "C" { extern char **environ; }
 #endif
 
diff --git a/src/ext/cmd.cpp b/src/ext/cmd.cpp
index a96fd4bb..fca5d1b5 100644
--- a/src/ext/cmd.cpp
+++ b/src/ext/cmd.cpp
@@ -357,7 +357,6 @@ shell cmd(boost::process::v2::pid_type pid, boost::system::error_code & ec)
     }
     else
         BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec);
-    kvm_close(kd);
     return {};
 }
     
@@ -368,7 +367,7 @@ shell cmd(boost::process::v2::pid_type pid, boost::system::error_code & ec)
     char **cmd = nullptr;
     proc *proc_info = nullptr;
     user *proc_user = nullptr;
-    kd = kvm_open(nullptr, nullptr, nullptr, O_RDONLY, nullptr);
+    kvm_t *kd = kvm_open(nullptr, nullptr, nullptr, O_RDONLY, nullptr);
     if (!kd) {BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec) return {};}
     if ((proc_info = kvm_getproc(kd, pid))) 
     {
@@ -379,9 +378,11 @@ shell cmd(boost::process::v2::pid_type pid, boost::system::error_code & ec)
                 int argc = 0;
                 for (int i = 0; cmd[i] != nullptr; i++)
                     argc ++;
-                return make_cmd_shell_::make(
+                shell res = make_cmd_shell_::make(
                         {}, argc, cmd,
                         +[](int, char ** argv) {::free(argv);})
+                kvm_close(kd);
+                return res;
             }
             else
                 BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec);
diff --git a/src/ext/cwd.cpp b/src/ext/cwd.cpp
index 2bbc4dc8..6aee83de 100644
--- a/src/ext/cwd.cpp
+++ b/src/ext/cwd.cpp
@@ -187,7 +187,7 @@ filesystem::path cwd(boost::process::v2::pid_type pid, boost::system::error_code
     {
         std::vector<char> vecbuff;
         vecbuff.resize(len);
-        if (sysctl(mib, 4, &vecbuff[0], &len, nullptr, 0) == 0)
+        if (sysctl(mib, sz, &vecbuff[0], &len, nullptr, 0) == 0)
         {
             path = filesystem::canonical(&vecbuff[0], ec);
         }
diff --git a/src/ext/env.cpp b/src/ext/env.cpp
index e7861c6d..ee797880 100644
--- a/src/ext/env.cpp
+++ b/src/ext/env.cpp
@@ -42,6 +42,13 @@
 #include <libprocstat.h>
 #endif
 
+#if defined(__OpenBSD__)
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <fcntl.h>
+#include <kvm.h>
+#endif
+
 BOOST_PROCESS_V2_BEGIN_NAMESPACE
 
 namespace detail {
@@ -98,7 +105,7 @@ const environment::char_type * dereference(native_env_iterator iterator)
     return iterator;
 }
 
-#elif (defined(__APPLE___) || defined(__MACH__))
+#elif (defined(__APPLE___) || defined(__MACH__)) || defined(__OpenBSD__)
 
 void native_env_handle_deleter::operator()(native_env_handle_type h) const
 {
@@ -393,7 +400,48 @@ env_view env(boost::process::v2::pid_type pid, boost::system::error_code & ec)
     BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec);
   return ev;
 }
+#elif defined(__OpenBSD__)
+env_view env(boost::process::v2::pid_type pid, boost::system::error_code & ec)
+{
 
+  std::vector<char> vec;
+  int cntp = 0;
+  kinfo_proc *proc_info = nullptr;
+
+  struct closer
+  {
+    void operator()(kvm_t * kd)
+    {
+      kvm_close(kd);
+    }
+  };
+
+  std::unique_ptr<kvm_t, closer> kd{kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr)};
+  if (!kd.get()) {BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec) return {};}
+  if ((proc_info = kvm_getprocs(kd.get(), KERN_PROC_PID, pid, sizeof(struct kinfo_proc), &cntp)))
+  {
+    char **env = kvm_getenvv(kd.get(), proc_info, 0);
+    if (env)
+    {
+      for (int i = 0; env[i] != nullptr; i++) 
+      {
+        for (int j = 0; j < strlen(env[i]); j++)
+          vec.push_back(env[i][j]);
+        vec.push_back('\0');
+      }
+      vec.push_back('\0');
+    }
+    else
+      BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec);
+  }
+  else
+    BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec);
+
+  env_view ev;
+  ev.handle_.reset(new char[vec.size()]());
+  std::copy(vec.begin(), vec.end(), ev.handle_.get());
+  return ev;
+}
 #endif
 
 env_view env(boost::process::v2::pid_type pid)
diff --git a/src/shell.cpp b/src/shell.cpp
index b563819e..ec0548d0 100644
--- a/src/shell.cpp
+++ b/src/shell.cpp
@@ -19,7 +19,7 @@
 #if defined(BOOST_PROCESS_V2_WINDOWS)
 #include <windows.h>
 #include <shellapi.h>
-#else
+#elif !defined(__OpenBSD__)
 #include <wordexp.h>
 #endif
 
@@ -30,7 +30,7 @@ BOOST_PROCESS_V2_DECL const error_category& get_shell_category()
 {
     return system_category();
 }
-#else
+#elif !defined(__OpenBSD__)
 
 struct shell_category_t final : public error_category
 {
@@ -66,6 +66,13 @@ BOOST_PROCESS_V2_DECL const error_category& get_shell_category()
     return instance;
 }
 
+#else
+
+const error_category& get_shell_category()
+{
+    return system_category();
+}
+
 #endif
 
 #if defined (BOOST_PROCESS_V2_WINDOWS)
@@ -92,7 +99,7 @@ auto shell::args() const-> args_type
     return input_.c_str();
 }
 
-#else
+#elif !defined(__OpenBSD__)
 
 void shell::parse_()
 {
@@ -135,6 +142,22 @@ auto shell::args() const -> args_type
         return const_cast<const char**>(argv());
 }
 
+#else
+
+void shell::parse_()
+{
+    error_code ec;
+    BOOST_PROCESS_V2_ASSIGN_EC(ec, ENOTSUP, system_category());
+    throw system_error(ec, "shell::parse");
+}
+
+shell::~shell() = default;
+
+auto shell::args() const -> args_type
+{
+    return nullptr;
+}
+
 #endif
 
 BOOST_PROCESS_V2_END_NAMESPACE
diff --git a/test/v2/Jamfile.jam b/test/v2/Jamfile.jam
index 7c6715a1..86774c6a 100644
--- a/test/v2/Jamfile.jam
+++ b/test/v2/Jamfile.jam
@@ -20,8 +20,18 @@ project : requirements
   <target-os>windows:<define>WIN32_LEAN_AND_MEAN
   <target-os>windows:<define>_WIN32_WINNT=0x0601
   <target-os>linux:<linkflags>-lpthread
-  <target-os>freebsd:<linkflags>-lutil
   <target-os>freebsd:<linkflags>-lpthread
+  <target-os>freebsd:<linkflags>-lutil
+  <target-os>freebsd:<linkflags>-lkvm
+  <target-os>freebsd:<linkflags>-lprocstat
+  <target-os>bsd:<linkflags>-lpthread
+  <target-os>bsd:<linkflags>-lkvm
+  <target-os>netbsd:<linkflags>-lpthread
+  <target-os>netbsd:<linkflags>-lkvm
+  <target-os>openbsd:<linkflags>-lpthread
+  <target-os>openbsd:<linkflags>-lkvm
+  <target-os>solaris:<linkflags>-lpthread
+  <target-os>solaris:<linkflags>-lkvm
   <os>NT,<toolset>cw:<library>ws2_32
   <os>NT,<toolset>gcc:<library>ws2_32
   <os>NT,<toolset>gcc:<library>Bcrypt