Merge branch 'lukas/ose/master/OTP-11334'

* lukas/ose/master/OTP-11334: (71 commits)
  erts: Fix unix efile assert
  ose: Use -O2 when building
  ose: Expand OSE docs
  ose: Add dummy ttsl driver
  ose: Cleanup cleanup of mutex selection defines
  ose: Polish mmap configure checks
  ose: Add ose specific x-compile flags
  ose: Updating fd_driver and spawn_driver for OSE
  ose: Updating event and signal API for OSE
  ose: Cleanup of mutex selection defines
  win32: Compile erl_log.exe
  ose: Remove uneccesary define
  ose: Fix ssl configure test for osx
  erts: Fix sys_msg_dispatcher assert
  ose: Fix broken doc links
  ose: Thread priorities configurable from lmconf
  ose: Yielding the cpu is done "the OSE" way
  ose: Start using ppdata for tse key
  ose: Do not use spinlocks on OSE
  ose: Fix support for crypto
  ...

Conflicts:
	lib/crypto/c_src/crypto.c

1 files changed, 1755 insertions, 0 deletions

diff --git a/erts/emulator/sys/ose/sys.c b/erts/emulator/sys/ose/sys.c
new file mode 100644
index 0000000000..c892cc69c7
--- /dev/null
+++ b/erts/emulator/sys/ose/sys.c
@@ -0,0 +1,1755 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 1996-2013. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+#include "sys/time.h"
+#include "time.h"
+#include "sys/uio.h"
+#include "termios.h"
+#include "ctype.h"
+#include "termios.h"
+
+#ifdef HAVE_FCNTL_H
+#include "fcntl.h"
+#endif
+
+#ifdef HAVE_SYS_IOCTL_H
+#include "sys/ioctl.h"
+#endif
+
+#define ERTS_WANT_BREAK_HANDLING
+#define WANT_NONBLOCKING
+#include "sys.h"
+#include "erl_thr_progress.h"
+
+#ifdef USE_THREADS
+#include "erl_threads.h"
+#endif
+
+#include "erl_mseg.h"
+
+#include "unistd.h"
+#include "efs.h"
+#include "erl_printf.h"
+#include "aio.h"
+#include "pm.h"
+#include "fcntl.h"
+
+/* Set the define to 1 to get some logging */
+#if 0
+#include "ramlog.h"
+#define LOG(output) ramlog_printf output
+#else
+#define LOG(output)
+#endif
+
+extern char **environ;
+static erts_smp_rwmtx_t environ_rwmtx;
+static PROCESS sig_proxy_pid = 0;
+
+#define MAX_VSIZE 16		/* Max number of entries allowed in an I/O
+				 * vector sock_sendv().
+				 */
+/*
+ * Don't need global.h, but bif_table.h (included by bif.h),
+ * won't compile otherwise
+ */
+#include "global.h"
+#include "bif.h"
+
+#include "erl_sys_driver.h"
+#include "erl_check_io.h"
+#include "erl_cpu_topology.h"
+
+/* The priority for reader/writer processes */
+#define FD_PROC_PRI get_pri(current_process())
+
+typedef struct ErtsSysReportExit_ ErtsSysReportExit;
+struct ErtsSysReportExit_ {
+    ErtsSysReportExit  *next;
+    Eterm              port;
+    int                pid;
+    int                ifd;
+    int                ofd;
+    ErlDrvEvent        attach_event;
+    ErlDrvEvent        input_event;
+    ErlDrvEvent        output_event;
+};
+
+/* This data is shared by these drivers - initialized by spawn_init() */
+static struct driver_data {
+   ErlDrvPort          port_num;
+   int                 ofd;
+   int                 ifd;
+   int                 packet_bytes;
+   ErtsSysReportExit   *report_exit;
+   int                 pid;
+   int                 alive;
+   int                 status;
+   ErlDrvEvent         input_event;
+   ErlDrvEvent         output_event;
+   struct aiocb        aiocb;
+   FmHandle            handle;
+   char                *install_handle;
+} *driver_data;			/* indexed by fd */
+
+struct async {
+  SIGSELECT            signo;
+  ErlDrvTermData       port;
+  ErlDrvTermData       proc;
+  PROCESS              spid;
+  PROCESS              target;
+  Uint32               ref;
+};
+
+static ErtsSysReportExit *report_exit_list;
+static ERTS_INLINE void report_exit_status(ErtsSysReportExit *rep, int status);
+
+extern int  driver_interrupt(int, int);
+extern void do_break(void);
+
+extern void erl_sys_args(int*, char**);
+
+/* The following two defs should probably be moved somewhere else */
+
+extern void erts_sys_init_float(void);
+
+extern void erl_crash_dump(char* file, int line, char* fmt, ...);
+
+#define DIR_SEPARATOR_CHAR    '/'
+
+#if defined(DEBUG)
+#define ERL_BUILD_TYPE_MARKER ".debug"
+#else /* opt */
+#define ERL_BUILD_TYPE_MARKER
+#endif
+
+#define CHILD_SETUP_PROG_NAME	"child_setup" ERL_BUILD_TYPE_MARKER
+
+#ifdef DEBUG
+static int debug_log = 0;
+#endif
+
+#ifdef ERTS_SMP
+static erts_smp_atomic32_t have_prepared_crash_dump;
+#define ERTS_PREPARED_CRASH_DUMP \
+  ((int) erts_smp_atomic32_xchg_nob(&have_prepared_crash_dump, 1))
+#else
+static volatile int have_prepared_crash_dump;
+#define ERTS_PREPARED_CRASH_DUMP \
+  (have_prepared_crash_dump++)
+#endif
+
+static erts_smp_atomic_t sys_misc_mem_sz;
+
+#if defined(ERTS_SMP)
+erts_mtx_t chld_stat_mtx;
+#endif
+
+#if defined(ERTS_SMP) /* ------------------------------------------------- */
+#define CHLD_STAT_LOCK		erts_mtx_lock(&chld_stat_mtx)
+#define CHLD_STAT_UNLOCK	erts_mtx_unlock(&chld_stat_mtx)
+
+#else /* ------------------------------------------------------------------- */
+#define CHLD_STAT_LOCK
+#define CHLD_STAT_UNLOCK
+static volatile int children_died;
+#endif
+
+#define SET_AIO(REQ,FD,SIZE,BUFF)                                       \
+   memset(&(REQ),0,sizeof(REQ));                                        \
+   (REQ).aio_fildes = FD;                                               \
+   (REQ).aio_offset = FM_POSITION_CURRENT;                              \
+   (REQ).aio_nbytes = SIZE;                                             \
+   (REQ).aio_buf = BUFF;                                                \
+   (REQ).aio_sigevent.sigev_notify = SIGEV_NONE
+
+/* the first sizeof(struct aiocb *) bytes of the write buffer
+ * will contain the pointer to the aiocb struct, this needs
+ * to be freed between asynchronous writes.
+ * A write of 0 bytes is ignored. */
+#define WRITE_AIO(FD,SIZE,BUFF) do {                                    \
+   if (SIZE > 0) {                                                      \
+      struct aiocb *write_req = driver_alloc(sizeof(struct aiocb));     \
+      char *write_buff = driver_alloc((sizeof(char)*SIZE)+1+            \
+            (sizeof(struct aiocb *)));                                  \
+      *(struct aiocb **)write_buff = (struct aiocb *)write_req;         \
+      write_buff += sizeof(struct aiocb *);                             \
+      memcpy(write_buff,BUFF,SIZE+1);                                   \
+      SET_AIO(*write_req,FD,SIZE,write_buff);                           \
+      aio_write(write_req);                                             \
+   }                                                                    \
+} while(0)
+
+/* free the write_buffer and write_req
+ * created in the WRITE_AIO() request macro */
+#define FREE_AIO(ptr) do {                                              \
+   struct aiocb *aiocb_ptr;                                             \
+   char *buffer_ptr;                                                    \
+   aiocb_ptr = *(struct aiocb **)((ptr)-sizeof(struct aiocb *));        \
+   buffer_ptr = (((char*)ptr)-sizeof(struct aiocb *));			\
+   driver_free(aiocb_ptr);                                              \
+   driver_free(buffer_ptr);                                             \
+} while(0)
+
+/* When we have several schedulers, we need to make sure
+ * that scheduler issuing aio_dispatch() is the owner on the signal */
+#define DISPATCH_AIO(sig) do {                                          \
+   restore(sig);                                                        \
+   aio_dispatch(sig);                                                   \
+   } while(0)
+
+
+/* debug print macros */
+#define DEBUG_RES 0
+
+#ifdef DEBUG_RES
+#define DEBUG_CHECK_RES(actual, expected) \
+   do { \
+      if (actual != expected ) { \
+         ramlog_printf("Result check failed" \
+                       " got: 0x%08x expected:0x%08x\nat: %s:%d\n", \
+               actual, expected, __FILE__, __LINE__); \
+         abort();  /* This might perhaps be too harsh? */ \
+      } \
+   } while(0)
+#else
+#define DEBUG_CHECK_RES
+#endif
+
+static struct fd_data {
+    char  pbuf[4];   /* hold partial packet bytes */
+    int   psz;       /* size of pbuf */
+    char  *buf;
+    char  *cpos;
+    int   sz;
+    int   remain;  /* for input on fd */
+} *fd_data;			/* indexed by fd */
+
+/********************* General functions ****************************/
+
+/* This is used by both the drivers and general I/O, must be set early */
+static int max_files = -1;
+
+/*
+ * a few variables used by the break handler
+ */
+#ifdef ERTS_SMP
+erts_smp_atomic32_t erts_break_requested;
+#define ERTS_SET_BREAK_REQUESTED \
+  erts_smp_atomic32_set_nob(&erts_break_requested, (erts_aint32_t) 1)
+#define ERTS_UNSET_BREAK_REQUESTED \
+  erts_smp_atomic32_set_nob(&erts_break_requested, (erts_aint32_t) 0)
+#else
+volatile int erts_break_requested = 0;
+#define ERTS_SET_BREAK_REQUESTED (erts_break_requested = 1)
+#define ERTS_UNSET_BREAK_REQUESTED (erts_break_requested = 0)
+#endif
+/* set early so the break handler has access to initial mode */
+static struct termios initial_tty_mode;
+static int replace_intr = 0;
+/* assume yes initially, ttsl_init will clear it */
+int using_oldshell = 1;
+static PROCESS get_signal_proxy_pid(void);
+
+static void
+init_check_io(void)
+{
+    erts_init_check_io();
+    max_files = erts_check_io_max_files();
+}
+
+#ifdef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT
+#define ERTS_CHK_IO_AS_INTR()	erts_check_io_async_sig_interrupt()
+#else
+#define ERTS_CHK_IO_AS_INTR()	erts_check_io_interrupt(1)
+#endif
+#define ERTS_CHK_IO_INTR	erts_check_io_interrupt
+#define ERTS_CHK_IO_INTR_TMD	erts_check_io_interrupt_timed
+#define ERTS_CHK_IO		erts_check_io
+#define ERTS_CHK_IO_SZ		erts_check_io_size
+
+
+void
+erts_sys_schedule_interrupt(int set)
+{
+    ERTS_CHK_IO_INTR(set);
+}
+
+#ifdef ERTS_SMP
+void
+erts_sys_schedule_interrupt_timed(int set, erts_short_time_t msec)
+{
+    ERTS_CHK_IO_INTR_TMD(set, msec);
+}
+#endif
+
+Uint
+erts_sys_misc_mem_sz(void)
+{
+    Uint res = ERTS_CHK_IO_SZ();
+    res += erts_smp_atomic_read_mb(&sys_misc_mem_sz);
+    return res;
+}
+
+/*
+ * reset the terminal to the original settings on exit
+ */
+void sys_tty_reset(int exit_code)
+{
+  if (using_oldshell && !replace_intr) {
+    SET_BLOCKING(0);
+  }
+  else if (isatty(0)) {
+    tcsetattr(0,TCSANOW,&initial_tty_mode);
+  }
+}
+
+#ifdef USE_THREADS
+
+typedef struct {
+    int sched_bind_data;
+} erts_thr_create_data_t;
+
+/*
+ * thr_create_prepare() is called in parent thread before thread creation.
+ * Returned value is passed as argument to thr_create_cleanup().
+ */
+static void *
+thr_create_prepare(void)
+{
+    erts_thr_create_data_t *tcdp;
+
+    tcdp = erts_alloc(ERTS_ALC_T_TMP, sizeof(erts_thr_create_data_t));
+
+    tcdp->sched_bind_data = erts_sched_bind_atthrcreate_prepare();
+
+    return (void *) tcdp;
+}
+
+
+/* thr_create_cleanup() is called in parent thread after thread creation. */
+static void
+thr_create_cleanup(void *vtcdp)
+{
+    erts_thr_create_data_t *tcdp = (erts_thr_create_data_t *) vtcdp;
+
+    erts_sched_bind_atthrcreate_parent(tcdp->sched_bind_data);
+
+    erts_free(ERTS_ALC_T_TMP, tcdp);
+}
+
+static void
+thr_create_prepare_child(void *vtcdp)
+{
+    erts_thr_create_data_t *tcdp = (erts_thr_create_data_t *) vtcdp;
+
+#ifdef ERTS_ENABLE_LOCK_COUNT
+    erts_lcnt_thread_setup();
+#endif
+
+    erts_sched_bind_atthrcreate_child(tcdp->sched_bind_data);
+}
+
+#endif /* #ifdef USE_THREADS */
+
+void
+erts_sys_pre_init(void)
+{
+    erts_printf_add_cr_to_stdout = 1;
+    erts_printf_add_cr_to_stderr = 1;
+#ifdef USE_THREADS
+    {
+    erts_thr_init_data_t eid = ERTS_THR_INIT_DATA_DEF_INITER;
+
+    eid.thread_create_child_func = thr_create_prepare_child;
+    /* Before creation in parent */
+    eid.thread_create_prepare_func = thr_create_prepare;
+    /* After creation in parent */
+    eid.thread_create_parent_func = thr_create_cleanup,
+
+    erts_thr_init(&eid);
+
+    report_exit_list = NULL;
+
+#ifdef ERTS_ENABLE_LOCK_COUNT
+    erts_lcnt_init();
+#endif
+
+#if defined(ERTS_SMP)
+    erts_mtx_init(&chld_stat_mtx, "child_status");
+#endif
+    }
+#ifdef ERTS_SMP
+    erts_smp_atomic32_init_nob(&erts_break_requested, 0);
+    erts_smp_atomic32_init_nob(&have_prepared_crash_dump, 0);
+#else
+    erts_break_requested = 0;
+    have_prepared_crash_dump = 0;
+#endif
+#if !defined(ERTS_SMP)
+    children_died = 0;
+#endif
+#endif /* USE_THREADS */
+    erts_smp_atomic_init_nob(&sys_misc_mem_sz, 0);
+}
+
+void
+erl_sys_init(void)
+{
+
+#ifdef USE_SETLINEBUF
+    setlinebuf(stdout);
+#else
+    setvbuf(stdout, (char *)NULL, _IOLBF, BUFSIZ);
+#endif
+
+    erts_sys_init_float();
+
+    /* we save this so the break handler can set and reset it properly */
+    /* also so that we can reset on exit (break handler or not) */
+    if (isatty(0)) {
+	tcgetattr(0,&initial_tty_mode);
+    }
+    tzset(); /* Required at least for NetBSD with localtime_r() */
+}
+
+static ERTS_INLINE int
+prepare_crash_dump(int secs)
+{
+#define NUFBUF (3)
+    int i, max;
+    char env[21]; /* enough to hold any 64-bit integer */
+    size_t envsz;
+    /*DeclareTmpHeapNoproc(heap,NUFBUF);*/
+    /*Eterm *hp = heap;*/
+    /*Eterm list = NIL;*/
+    int has_heart = 0;
+
+    UseTmpHeapNoproc(NUFBUF);
+
+    if (ERTS_PREPARED_CRASH_DUMP)
+	return 0; /* We have already been called */
+
+
+    /* Positive secs means an alarm must be set
+     * 0 or negative means no alarm
+     *
+     * Set alarm before we try to write to a port
+     * we don't want to hang on a port write with
+     * no alarm.
+     *
+     */
+
+#if 0 /*ose TBD!!!*/
+    if (secs >= 0) {
+	alarm((unsigned int)secs);
+    }
+#endif
+
+    /* Make sure we unregister at epmd (unknown fd) and get at least
+       one free filedescriptor (for erl_crash.dump) */
+
+    max = max_files;
+    if (max < 1024)
+	max = 1024;
+    for (i = 3; i < max; i++) {
+	close(i);
+    }
+
+    envsz = sizeof(env);
+    i = erts_sys_getenv__("ERL_CRASH_DUMP_NICE", env, &envsz);
+    if (i >= 0) {
+	int nice_val;
+	nice_val = i != 0 ? 0 : atoi(env);
+	if (nice_val > 39) {
+	    nice_val = 39;
+	}
+	set_pri(nice_val);
+    }
+
+    UnUseTmpHeapNoproc(NUFBUF);
+#undef NUFBUF
+    return has_heart;
+}
+
+int erts_sys_prepare_crash_dump(int secs)
+{
+    return prepare_crash_dump(secs);
+}
+
+static ERTS_INLINE void
+break_requested(void)
+{
+  /*
+   * just set a flag - checked for and handled by
+   * scheduler threads erts_check_io() (not signal handler).
+   */
+#ifdef DEBUG
+  fprintf(stderr,"break!\n");
+#endif
+  if (ERTS_BREAK_REQUESTED)
+      erl_exit(ERTS_INTR_EXIT, "");
+
+  ERTS_SET_BREAK_REQUESTED;
+  ERTS_CHK_IO_AS_INTR(); /* Make sure we don't sleep in poll */
+}
+
+/* Disable break */
+void erts_set_ignore_break(void) {
+
+}
+
+/* Don't use ctrl-c for break handler but let it be
+   used by the shell instead (see user_drv.erl) */
+void erts_replace_intr(void) {
+  struct termios mode;
+
+  if (isatty(0)) {
+    tcgetattr(0, &mode);
+
+    /* here's an example of how to replace ctrl-c with ctrl-u */
+    /* mode.c_cc[VKILL] = 0;
+       mode.c_cc[VINTR] = CKILL; */
+
+    mode.c_cc[VINTR] = 0;	/* disable ctrl-c */
+    tcsetattr(0, TCSANOW, &mode);
+    replace_intr = 1;
+  }
+}
+
+void init_break_handler(void)
+{
+
+}
+
+int sys_max_files(void)
+{
+   return(max_files);
+}
+
+
+/************************** OS info *******************************/
+
+/* Used by erlang:info/1. */
+/* (This code was formerly in drv.XXX/XXX_os_drv.c) */
+
+char os_type[] = "ose";
+
+void
+os_flavor(char* namebuf,	/* Where to return the name. */
+	  unsigned size)	/* Size of name buffer. */
+{
+#if 0
+    struct utsname uts;		/* Information about the system. */
+    char* s;
+
+    (void) uname(&uts);
+    for (s = uts.sysname; *s; s++) {
+	if (isupper((int) *s)) {
+	    *s = tolower((int) *s);
+	}
+    }
+    strcpy(namebuf, uts.sysname);
+#else
+    strncpy(namebuf, "release", size);
+#endif
+}
+
+void
+os_version(pMajor, pMinor, pBuild)
+int* pMajor;			/* Pointer to major version. */
+int* pMinor;			/* Pointer to minor version. */
+int* pBuild;			/* Pointer to build number. */
+{
+    *pMajor = 5;
+    *pMinor = 7;
+    *pBuild = 0;
+}
+
+void init_getenv_state(GETENV_STATE *state)
+{
+   erts_smp_rwmtx_rlock(&environ_rwmtx);
+   *state = NULL;
+}
+
+char **environ; /*ose - needs replacement*/
+
+char *getenv_string(GETENV_STATE *state0)
+{
+   char **state = (char **) *state0;
+   char *cp;
+
+   ERTS_SMP_LC_ASSERT(erts_smp_lc_rwmtx_is_rlocked(&environ_rwmtx));
+
+   if (state == NULL)
+      state = environ;
+
+   cp = *state++;
+   *state0 = (GETENV_STATE) state;
+
+   return cp;
+}
+
+void fini_getenv_state(GETENV_STATE *state)
+{
+   *state = NULL;
+   erts_smp_rwmtx_runlock(&environ_rwmtx);
+}
+
+
+/************************** Port I/O *******************************/
+
+/* I. Common stuff */
+
+union SIGNAL {
+    SIGSELECT sig_no;
+    struct FmReadPtr fm_read_reply;
+    struct FmWritePtr fm_write_reply;
+    struct async async;
+};
+
+/* II. The spawn/fd drivers */
+
+/*
+ * Decreasing the size of it below 16384 is not allowed.
+ */
+#define ERTS_SYS_READ_BUF_SZ (64*1024)
+
+/* Driver interfaces */
+static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*);
+static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*);
+static ErlDrvSSizeT fd_control(ErlDrvData, unsigned int, char *, ErlDrvSizeT,
+			       char **, ErlDrvSizeT);
+static int spawn_init(void);
+static void fd_stop(ErlDrvData);
+static void erl_stop(ErlDrvData);
+static void ready_input(ErlDrvData, ErlDrvEvent);
+static void ready_output(ErlDrvData, ErlDrvEvent);
+static void output(ErlDrvData, char*, ErlDrvSizeT);
+static void stop_select(ErlDrvEvent, void*);
+
+static PROCESS
+get_signal_proxy_pid(void) {
+   union SIGNAL *sig;
+   SIGSELECT any_sig[] = {0};
+
+   if (!sig_proxy_pid) {
+      sig = alloc(sizeof(union SIGNAL), ERTS_SIGNAL_OSE_DRV_ATTACH);
+      hunt("ose_signal_driver_proxy", 0, NULL, &sig);
+      sig = receive(any_sig);
+      sig_proxy_pid = sender(&sig);
+      free_buf(&sig);
+   }
+   ASSERT(sig_proxy_pid);
+   return sig_proxy_pid;
+}
+
+static ErlDrvOseEventId
+resolve_signal(union SIGNAL* sig) {
+   switch(sig->sig_no) {
+
+      case FM_READ_PTR_REPLY:
+            return (ErlDrvOseEventId)sig->fm_read_reply.handle;
+
+       case FM_WRITE_PTR_REPLY:
+            return (ErlDrvOseEventId)sig->fm_write_reply.handle;
+
+       case ERTS_SIGNAL_OSE_DRV_ATTACH:
+            return (ErlDrvOseEventId)sig->async.target;
+
+       default:
+            break;
+    }
+    return (ErlDrvOseEventId)-1;
+}
+
+struct erl_drv_entry spawn_driver_entry = {
+    spawn_init,
+    spawn_start,
+    erl_stop,
+    output,
+    ready_input,
+    ready_output,
+    "spawn",
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    ERL_DRV_EXTENDED_MARKER,
+    ERL_DRV_EXTENDED_MAJOR_VERSION,
+    ERL_DRV_EXTENDED_MINOR_VERSION,
+    ERL_DRV_FLAG_USE_PORT_LOCKING,
+    NULL, NULL,
+    stop_select
+};
+struct erl_drv_entry fd_driver_entry = {
+    NULL,
+    fd_start,
+    fd_stop,
+    output,
+    ready_input,
+    ready_output,
+    "fd",
+    NULL,
+    NULL,
+    fd_control,
+    NULL,
+    NULL,
+    NULL, /* ready_async */
+    NULL, /* flush */
+    NULL, /* call */
+    NULL, /* event */
+    ERL_DRV_EXTENDED_MARKER,
+    ERL_DRV_EXTENDED_MAJOR_VERSION,
+    ERL_DRV_EXTENDED_MINOR_VERSION,
+    0, /* ERL_DRV_FLAGs */
+    NULL, /* handle2 */
+    NULL, /* process_exit */
+    stop_select
+};
+
+static void
+set_spawn_fd(int local_fd, int remote_fd, PROCESS remote_pid) {
+   PROCESS vm_pid;
+   FmHandle handle;
+   char env_val[55];
+   char env_name[10];
+   EfsStatus efs_res;
+
+   /* get pid of pipevm and handle of chosen fd */
+   efs_res = efs_examine_fd(local_fd, FLIB_FD_VMPID, &vm_pid, 0);
+   DEBUG_CHECK_RES(efs_res, EFS_SUCCESS);
+
+   /* setup the file descriptor to buffer per line */
+   efs_res = efs_config_fd(local_fd, FLIB_FD_BUFMODE, FM_BUFF_LINE,
+                    FLIB_FD_BUFSIZE, 80, 0);
+   DEBUG_CHECK_RES(efs_res, EFS_SUCCESS);
+
+   /* duplicate handle  and set spawn pid owner */
+   efs_res = efs_dup_to(local_fd, remote_pid, &handle);
+   DEBUG_CHECK_RES(efs_res, EFS_SUCCESS);
+
+   sprintf(env_name, "FD%d", remote_fd);
+
+   /* Syntax of the environment variable:
+    * "FD#" "<pid of pipevm>,<handle>,<buffer mode>,<buff size>,<omode>" */
+   sprintf(env_val, "0x%lx,0x%lx,%lu,%lu,0x%x",
+                    vm_pid, handle,
+                    FM_BUFF_LINE, 80,
+                    O_APPEND);
+
+   set_env(remote_pid, env_name, env_val);
+}
+
+static ErlDrvData
+set_driver_data(ErlDrvPort port_num,
+			   int ifd,
+			   int ofd,
+			   int packet_bytes,
+			   int read_write,
+			   int exit_status,
+			   PROCESS pid)
+{
+    Port *prt;
+    ErtsSysReportExit *report_exit;
+
+    prt = erts_drvport2port(port_num);
+    if (prt != ERTS_INVALID_ERL_DRV_PORT) {
+       prt->os_pid = pid;
+    }
+
+    /* READ */
+    if (read_write & DO_READ) {
+       efs_examine_fd(ifd, FLIB_FD_HANDLE, &driver_data[ifd].handle, 0);
+       driver_data[ifd].ifd = ifd;
+       driver_data[ifd].packet_bytes = packet_bytes;
+       driver_data[ifd].port_num = port_num;
+       driver_data[ifd].pid = pid;
+
+       /* async read struct */
+       memset(&driver_data[ifd].aiocb, 0, sizeof(struct aiocb));
+       driver_data[ifd].aiocb.aio_buf = driver_alloc(255);
+       driver_data[ifd].aiocb.aio_fildes = ifd;
+       driver_data[ifd].aiocb.aio_nbytes = 255;
+
+       driver_data[ifd].alive = 1;
+       driver_data[ifd].status = 0;
+       driver_data[ifd].input_event =
+          erl_drv_ose_event_alloc(FM_READ_PTR_REPLY,
+                driver_data[ifd].handle, resolve_signal,
+                &driver_data[ifd].ifd);
+
+       /* READ & WRITE */
+       if (read_write & DO_WRITE) {
+          driver_data[ifd].ofd = ofd;
+          efs_examine_fd(ofd, FLIB_FD_HANDLE, &driver_data[ofd].handle, 0);
+
+          driver_data[ifd].output_event =
+             erl_drv_ose_event_alloc(FM_WRITE_PTR_REPLY,
+                   driver_data[ofd].handle, resolve_signal,
+                   &driver_data[ofd].ofd);
+          driver_data[ofd].pid = pid;
+          if (ifd != ofd) {
+             driver_data[ofd] = driver_data[ifd];
+             driver_data[ofd].aiocb.aio_buf = NULL;
+           }
+       }
+       else { /* READ ONLY */
+          driver_data[ifd].ofd = -1;
+       }
+
+       /* enable input event */
+       (void) driver_select(port_num, driver_data[ifd].input_event,
+			     (ERL_DRV_READ | ERL_DRV_USE), 1);
+
+       aio_read(&driver_data[ifd].aiocb);
+    }
+    else { /* WRITE ONLY */
+       efs_examine_fd(ofd, FLIB_FD_HANDLE, &driver_data[ofd].handle, 0);
+       driver_data[ofd].packet_bytes = packet_bytes;
+       driver_data[ofd].port_num = port_num;
+       driver_data[ofd].ofd = ofd;
+       driver_data[ofd].pid = pid;
+       driver_data[ofd].alive = 1;
+       driver_data[ofd].status = 0;
+       driver_data[ofd].output_event =
+          erl_drv_ose_event_alloc(FM_WRITE_PTR_REPLY, driver_data[ofd].handle,
+				    resolve_signal, &driver_data[ofd].ofd);
+       driver_data[ofd].input_event = driver_data[ofd].output_event;
+    }
+
+    /* this is used for spawned load modules, and is needed
+     * to properly uninstall them */
+    if (exit_status) {
+       struct PmProgramInfo *info;
+       int install_handle_size;
+       union SIGNAL *sig;
+       PmStatus pm_status;
+       report_exit = erts_alloc(ERTS_ALC_T_PRT_REP_EXIT,
+				 sizeof(ErtsSysReportExit));
+       report_exit->next = report_exit_list;
+       report_exit->port = erts_drvport2id(port_num);
+       report_exit->pid = pid;
+       report_exit->ifd = (read_write & DO_READ) ? ifd : -1;
+       report_exit->ofd = (read_write & DO_WRITE) ? ofd : -1;
+       report_exit_list = report_exit;
+       report_exit->attach_event =
+          erl_drv_ose_event_alloc(ERTS_SIGNAL_OSE_DRV_ATTACH, pid,
+				resolve_signal, &driver_data[ifd].ifd);
+
+       /* setup ifd and ofd report exit */
+       driver_data[ifd].report_exit = report_exit;
+       driver_data[ofd].report_exit = report_exit;
+
+       pm_status = ose_pm_program_info(pid, &info);
+       DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
+
+       install_handle_size = strlen(info->install_handle)+1;
+       driver_data[ifd].install_handle = driver_alloc(install_handle_size);
+       strcpy(driver_data[ifd].install_handle,
+             info->install_handle);
+
+       free_buf((union SIGNAL **)&info);
+
+       sig = alloc(sizeof(struct async), ERTS_SIGNAL_OSE_DRV_ATTACH);
+       sig->async.target = pid;
+       send(&sig, get_signal_proxy_pid());
+
+       /* this event will trigger when we receive an attach signal
+        * from the recently dead load module */
+       (void)driver_select(port_num,report_exit->attach_event, DO_READ, 1);
+    }
+    else {
+       report_exit = NULL;
+    }
+
+    /* the return value is the pointer to the driver_data struct we created
+     * in this function, it will be used in the drivers input
+     * and output functions */
+    return (ErlDrvData)((!(read_write & DO_READ) && read_write & DO_WRITE)
+          ? &driver_data[ofd]
+          : &driver_data[ifd]);
+}
+
+static int spawn_init()
+{
+    int i;
+
+    driver_data = (struct driver_data *)
+      erts_alloc(ERTS_ALC_T_DRV_TAB, max_files * sizeof(struct driver_data));
+    erts_smp_atomic_add_nob(&sys_misc_mem_sz,
+			    max_files * sizeof(struct driver_data));
+
+    for (i = 0; i < max_files; i++)
+        driver_data[i].pid = -1;
+
+   return 1;
+}
+
+static void
+init_fd_data(int fd, ErlDrvPort port_num)
+{
+    fd_data[fd].buf = NULL;
+    fd_data[fd].cpos = NULL;
+    fd_data[fd].remain = 0;
+    fd_data[fd].sz = 0;
+    fd_data[fd].psz = 0;
+}
+
+/* FIXME write a decent text on pipes on ose */
+static ErlDrvData
+spawn_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts)
+{
+    int ifd[2];
+    int ofd[2];
+    static uint32_t ticker = 0;
+    PmStatus pm_status;
+    OSDOMAIN domain = PM_NEW_DOMAIN;
+    PROCESS progpid, mainbid, mainpid;
+    char *handle = NULL;
+    struct PmProgramInfo *info;
+    char *args = NULL;
+    char *tmp_handle;
+    ErlDrvData res = (ErlDrvData)-1;
+    int handle_size;
+    char *ptr;
+
+    /* handle arguments */
+    ptr = strchr(name, ' ');
+    if (ptr != NULL) {
+       *ptr ='\0';
+       ptr++;
+       args = ptr;
+    }
+    else {
+       args = NULL;
+    }
+
+    /* create an install handle */
+    ptr = strrchr(name, '/');
+    if (ptr != NULL) {
+       ptr++;
+       tmp_handle = ptr;
+    }
+    else {
+       tmp_handle = name;
+    }
+    handle_size = strlen(tmp_handle)+1;
+    handle_size += (ticker<10)?3:((ticker<100)?4:5);
+
+    handle = driver_alloc(handle_size);
+    snprintf(handle, handle_size, "%s_%d", tmp_handle, ticker);
+
+    do {
+       snprintf(handle, handle_size, "%s_%d", tmp_handle, ticker++);
+       pm_status = ose_pm_install_load_module(0, "ELF", name, handle,
+                                              0, 0, NULL);
+
+    } while (pm_status == PM_EINSTALL_HANDLE_ALREADY_INSTALLED);
+    DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
+
+    /* Create Program */
+    pm_status = ose_pm_create_program(&domain, handle, 0, 0,
+                                      NULL, &progpid, &mainbid);
+    DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
+
+    /* Get the mainpid from the newly created program */
+    pm_status = ose_pm_program_info(progpid, &info);
+    DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
+
+    mainpid = info->main_process;
+    free_buf ((union SIGNAL **)&info);
+
+    /* pipevm needs to be started
+     * pipe will return 0 if success, -1 if not,
+     * errno will be set */
+    if (pipe(ifd) != 0 || pipe(ofd) != 0) {
+       DEBUG_CHECK_RES(0, -1);
+       ASSERT(0);
+    }
+
+    /* setup driver data */
+    res = set_driver_data(port_num, ofd[0], ifd[1], opts->packet_bytes,
+              opts->read_write, 1 /* opts->exit_status */, progpid);
+
+    /* init the fd_data array for read/write */
+    init_fd_data(ofd[0], port_num);
+    init_fd_data(ifd[1], port_num);
+
+    /* setup additional configurations
+     * for the spawned applications environment */
+    if (args != NULL) {
+       set_env(progpid, "ARGV", args);
+    }
+    set_env(mainbid, "EFS_RESOLVE_TMO", 0);
+    set_spawn_fd(ifd[0], 0, mainpid);
+    set_spawn_fd(ofd[1], 1, mainpid);
+    set_spawn_fd(ofd[1], 2, mainpid);
+
+    /* start the spawned program */
+    pm_status = ose_pm_start_program(mainbid);
+    DEBUG_CHECK_RES(pm_status, PM_SUCCESS);
+
+    /* close unused fd's */
+    close(ifd[0]);
+    close(ofd[1]);
+
+    if (handle) {
+       driver_free(handle);
+    }
+
+    return (ErlDrvData)res;
+}
+
+#define FD_DEF_HEIGHT 24
+#define FD_DEF_WIDTH 80
+/* Control op */
+#define FD_CTRL_OP_GET_WINSIZE 100
+
+static int fd_get_window_size(int fd, Uint32 *width, Uint32 *height)
+{
+#ifdef TIOCGWINSZ
+    struct winsize ws;
+    if (ioctl(fd,TIOCGWINSZ,&ws) == 0) {
+	*width = (Uint32) ws.ws_col;
+	*height = (Uint32) ws.ws_row;
+	return 0;
+    }
+#endif
+    return -1;
+}
+
+static ErlDrvSSizeT fd_control(ErlDrvData drv_data,
+			       unsigned int command,
+			       char *buf, ErlDrvSizeT len,
+			       char **rbuf, ErlDrvSizeT rlen)
+{
+   struct driver_data *data = (struct driver_data *)drv_data;
+    char resbuff[2*sizeof(Uint32)];
+    switch (command) {
+    case FD_CTRL_OP_GET_WINSIZE:
+	{
+	    Uint32 w,h;
+	    if (fd_get_window_size(data->ifd,&w,&h))
+		return 0;
+	    memcpy(resbuff,&w,sizeof(Uint32));
+	    memcpy(resbuff+sizeof(Uint32),&h,sizeof(Uint32));
+	}
+	break;
+    default:
+	return 0;
+    }
+    if (rlen < 2*sizeof(Uint32)) {
+	*rbuf = driver_alloc(2*sizeof(Uint32));
+    }
+    memcpy(*rbuf,resbuff,2*sizeof(Uint32));
+    return 2*sizeof(Uint32);
+}
+
+static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
+			   SysDriverOpts* opts)
+{
+    ErlDrvData res;
+
+    CHLD_STAT_LOCK;
+    if (opts->read_write & DO_READ) {
+	init_fd_data(opts->ifd, port_num);
+    }
+    if (opts->read_write & DO_WRITE) {
+	init_fd_data(opts->ofd, port_num);
+    }
+    res = set_driver_data(port_num, opts->ifd, opts->ofd,
+				      opts->packet_bytes,
+				      opts->read_write, 0, -1);
+    CHLD_STAT_UNLOCK;
+    return res;
+}
+
+static void clear_fd_data(int fd)
+{
+    if (fd_data[fd].sz > 0) {
+	erts_free(ERTS_ALC_T_FD_ENTRY_BUF, (void *) fd_data[fd].buf);
+	ASSERT(erts_smp_atomic_read_nob(&sys_misc_mem_sz) >= fd_data[fd].sz);
+	erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*fd_data[fd].sz);
+    }
+    fd_data[fd].buf = NULL;
+    fd_data[fd].sz = 0;
+    fd_data[fd].remain = 0;
+    fd_data[fd].cpos = NULL;
+    fd_data[fd].psz = 0;
+}
+
+static void nbio_stop_fd(ErlDrvPort prt, ErlDrvEvent ev)
+{
+    int *fd;
+    driver_select(prt,ev,DO_READ|DO_WRITE,0);
+    erl_drv_ose_event_fetch(ev, NULL, NULL, (void **)&fd);
+    clear_fd_data(*fd);
+    SET_BLOCKING(*fd);
+}
+
+static void fd_stop(ErlDrvData drv_data)  /* Does not close the fds */
+{
+   struct driver_data *data = (struct driver_data *)drv_data;
+
+   if (data->ofd != -1) {
+      if (data->ifd != data->ofd) { /* read and write */
+         nbio_stop_fd(data->port_num, data->input_event);
+         nbio_stop_fd(data->port_num, data->output_event);
+      }
+      else { /* write only */
+         nbio_stop_fd(data->port_num, data->output_event);
+      }
+   }
+   else { /* read only */
+      nbio_stop_fd(data->port_num, data->input_event);
+   }
+}
+
+
+static void erl_stop(ErlDrvData drv_data)
+{
+   struct driver_data *data = (struct driver_data *)drv_data;
+
+   CHLD_STAT_LOCK;
+   data->pid = -1;
+   CHLD_STAT_UNLOCK;
+
+   if (data->ofd != -1) {
+      if (data->ifd != data->ofd) { /* read and write */
+         nbio_stop_fd(data->port_num, data->input_event);
+         nbio_stop_fd(data->port_num, data->output_event);
+         driver_select(data->port_num, data->input_event, ERL_DRV_USE, 0);
+         driver_select(data->port_num, data->output_event, ERL_DRV_USE, 0);
+      }
+      else { /* write only */
+         nbio_stop_fd(data->port_num, data->output_event);
+         driver_select(data->port_num, data->output_event, ERL_DRV_USE, 0);
+      }
+   }
+   else { /* read only */
+      nbio_stop_fd(data->port_num, data->input_event);
+      driver_select(data->port_num, data->input_event, ERL_DRV_USE, 0);
+   }
+   close(data->ifd);
+   close(data->ofd);
+}
+
+/* The parameter e is a pointer to the driver_data structure
+ * related to the fd to be used as output */
+static void output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len)
+{
+    ErlDrvSizeT sz;
+    char lb[4];
+    char* lbp;
+    struct driver_data *data = (struct driver_data *)drv_data;
+
+    if (((data->packet_bytes == 2) &&
+             (len > 0xffff)) || (data->packet_bytes == 1 && len > 0xff)) {
+	driver_failure_posix(data->port_num, EINVAL);
+	return; /* -1; */
+    }
+    put_int32(len, lb);
+    lbp = lb + (4-(data->packet_bytes));
+
+    if ((sz = driver_sizeq(data->port_num)) > 0) {
+	driver_enq(data->port_num, lbp, data->packet_bytes);
+	driver_enq(data->port_num, buf, len);
+	if (sz + len + data->packet_bytes >= (1 << 13))
+	    set_busy_port(data->port_num, 1);
+    }
+    else {
+       driver_enq(data->port_num, buf, len);  /* n is the skip value */
+
+       driver_select(data->port_num, data->output_event,
+		      ERL_DRV_WRITE|ERL_DRV_USE, 1);
+
+       WRITE_AIO(data->ofd, len, buf);
+    }
+    return; /* 0; */
+}
+
+/* This function is being run when we in recieve
+ * either a read of 0 bytes, or the attach signal from a dying
+ * spawned load module */
+static int port_inp_failure(ErlDrvPort port_num, ErlDrvEvent ready_fd, int res)
+				/* Result: 0 (eof) or -1 (error) */
+{
+    int *fd;
+    SIGSELECT sig_no;
+    ASSERT(res <= 0);
+
+    erl_drv_ose_event_fetch(ready_fd,&sig_no, NULL, (void **)&fd);
+
+    /* As we need to handle two signals, we do this in two steps */
+    if (driver_data[*fd].alive) {
+       report_exit_status(driver_data[*fd].report_exit, 0); /* status? */
+    }
+    else {
+       clear_fd_data(*fd);
+       driver_report_exit(driver_data[*fd].port_num, driver_data[*fd].status);
+       /* As we do not really know if the spawn has crashed or exited nicely
+        * we do not check the result status of the following call.. FIXME
+        * can we handle this in a better way? */
+       ose_pm_uninstall_load_module(driver_data[*fd].install_handle);
+       driver_free(driver_data[*fd].install_handle);
+       driver_free((void *)driver_data[*fd].aiocb.aio_buf);
+
+       close(*fd);
+    }
+
+    return 0;
+}
+
+/* The parameter e is a pointer to the driver_data structure
+ * related to the fd to be used as output.
+ * ready_fd is the event that triggered this call to ready_input */
+static void ready_input(ErlDrvData drv_data, ErlDrvEvent ready_fd)
+{
+    int res;
+    Uint h;
+    char *buf;
+    union SIGNAL *sig;
+    struct driver_data *data = (struct driver_data *)drv_data;
+
+    sig = erl_drv_ose_get_signal(ready_fd);
+    ASSERT(sig);
+
+
+   while (sig) {
+      /* If we've recieved an attach signal, we need to handle
+       * it in port_inp_failure */
+      if (sig->sig_no == ERTS_SIGNAL_OSE_DRV_ATTACH) {
+         port_inp_failure(data->port_num, ready_fd, 0);
+       }
+       else {
+          res = sig->fm_read_reply.actual;
+
+          if (data->packet_bytes == 0) {
+             if (res < 0) {
+                if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
+                   port_inp_failure(data->port_num, ready_fd, res);
+                }
+             }
+             else if (res == 0) {
+                /* read of 0 bytes, eof, otherside of pipe is assumed dead */
+                port_inp_failure(data->port_num, ready_fd, res);
+             }
+             else {
+                buf = driver_alloc(res);
+                memcpy(buf, (void *)data->aiocb.aio_buf, res);
+                driver_select(data->port_num, data->output_event,
+                      ERL_DRV_WRITE|ERL_DRV_USE, 1);
+                driver_output(data->port_num, (char*) buf, res);
+                driver_free(buf);
+             }
+          }
+          /* We try to read the remainder */
+          else if (fd_data[data->ifd].remain > 0) {
+             if (res < 0) {
+                if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
+                   port_inp_failure(data->port_num, ready_fd, res);
+                }
+             }
+             else if (res == 0) {
+                port_inp_failure(data->port_num, ready_fd, res);
+             }
+             else if (res == fd_data[data->ifd].remain) { /* we're done  */
+                driver_output(data->port_num,
+                              fd_data[data->ifd].buf,
+                              fd_data[data->ifd].sz);
+                clear_fd_data(data->ifd);
+             }
+             else { /*  if (res < fd_data[fd].remain) */
+                fd_data[data->ifd].cpos += res;
+                fd_data[data->ifd].remain -= res;
+             }
+          }
+          else if (fd_data[data->ifd].remain == 0) { /* clean fd */
+             if (res < 0) {
+                if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
+                   port_inp_failure(data->port_num, ready_fd, res);
+                }
+             }
+             else if (res == 0) {	/* eof */
+                port_inp_failure(data->port_num, ready_fd, res);
+             }
+             else if (res < data->packet_bytes - fd_data[data->ifd].psz) {
+                memcpy(fd_data[data->ifd].pbuf+fd_data[data->ifd].psz,
+                      (void *)data->aiocb.aio_buf, res);
+                fd_data[data->ifd].psz += res;
+             }
+             else  { /* if (res >= packet_bytes) */
+                unsigned char* cpos = (unsigned char*)data->aiocb.aio_buf;
+                int bytes_left = res;
+
+                while (1) {
+                   int psz = fd_data[data->ifd].psz;
+                   char* pbp = fd_data[data->ifd].pbuf + psz;
+
+                   while (bytes_left && (psz < data->packet_bytes)) {
+                      *pbp++ = *cpos++;
+                      bytes_left--;
+                      psz++;
+                   }
+
+                   if (psz < data->packet_bytes) {
+                      fd_data[data->ifd].psz = psz;
+                      break;
+                   }
+                   fd_data[data->ifd].psz = 0;
+
+                   switch (data->packet_bytes) {
+                      case 1: h = get_int8(fd_data[data->ifd].pbuf);  break;
+                      case 2: h = get_int16(fd_data[data->ifd].pbuf); break;
+                      case 4: h = get_int32(fd_data[data->ifd].pbuf); break;
+                      default: ASSERT(0); return; /* -1; */
+                   }
+
+                   if (h <= (bytes_left)) {
+                      driver_output(data->port_num, (char*) cpos, h);
+                      cpos += h;
+                      bytes_left -= h;
+                      continue;
+                   }
+                   else {		/* The last message we got was split */
+                      char *buf = erts_alloc_fnf(ERTS_ALC_T_FD_ENTRY_BUF, h);
+                      if (!buf) {
+                         errno = ENOMEM;
+                         port_inp_failure(data->port_num, ready_fd, -1);
+                      }
+                      else {
+                         erts_smp_atomic_add_nob(&sys_misc_mem_sz, h);
+                         sys_memcpy(buf, cpos, bytes_left);
+                         fd_data[data->ifd].buf = buf;
+                         fd_data[data->ifd].sz = h;
+                         fd_data[data->ifd].remain = h - bytes_left;
+                         fd_data[data->ifd].cpos = buf + bytes_left;
+                      }
+                      break;
+                   }
+                }
+             }
+          }
+
+          /* reset the read buffer and init next asynch read */
+          DISPATCH_AIO(sig);
+          memset((void *)data->aiocb.aio_buf, 0, 255);
+
+          if (res > 0) {
+             aio_read(&data->aiocb);
+          }
+       }
+       sig = erl_drv_ose_get_signal(ready_fd);
+    }
+}
+
+
+/* The parameter e is a pointer to the driver_data structure
+ * related to the fd to be used as output.
+ * ready_fd is the event that triggered this call to ready_input */
+static void ready_output(ErlDrvData drv_data, ErlDrvEvent ready_fd)
+{
+   SysIOVec *iov;
+   int vlen;
+   int res;
+   union SIGNAL *sig;
+   struct driver_data *data = (struct driver_data *)drv_data;
+
+   sig = erl_drv_ose_get_signal(ready_fd);
+   ASSERT(sig);
+
+   while (sig != NULL) {
+      if (sig->fm_write_reply.actual <= 0) {
+         int status;
+
+         status = efs_status_to_errno(sig->fm_write_reply.status);
+         driver_select(data->port_num, ready_fd, ERL_DRV_WRITE, 0);
+         DISPATCH_AIO(sig);
+         FREE_AIO(sig->fm_write_reply.buffer);
+
+         driver_failure_posix(data->port_num, status);
+      }
+      else { /* written bytes > 0 */
+          iov = driver_peekq(data->port_num, &vlen);
+          if (vlen > 0) {
+             DISPATCH_AIO(sig);
+             FREE_AIO(sig->fm_write_reply.buffer);
+             res = driver_deq(data->port_num, iov[0].iov_len);
+             if (res > 0) {
+                iov = driver_peekq(data->port_num, &vlen);
+                WRITE_AIO(data->ofd, iov[0].iov_len, iov[0].iov_base);
+             }
+         }
+      }
+      sig = erl_drv_ose_get_signal(ready_fd);
+   }
+}
+
+static void stop_select(ErlDrvEvent ready_fd, void* _)
+{
+   int *fd;
+   erl_drv_ose_event_fetch(ready_fd, NULL, NULL, (void **)&fd);
+   erl_drv_ose_event_free(ready_fd);
+   close(*fd);
+}
+
+
+void erts_do_break_handling(void)
+{
+    struct termios temp_mode;
+    int saved = 0;
+
+    /*
+     * Most functions that do_break() calls are intentionally not thread safe;
+     * therefore, make sure that all threads but this one are blocked before
+     * proceeding!
+     */
+    erts_smp_thr_progress_block();
+
+    /* during break we revert to initial settings */
+    /* this is done differently for oldshell */
+    if (using_oldshell && !replace_intr) {
+      SET_BLOCKING(1);
+    }
+    else if (isatty(0)) {
+      tcgetattr(0,&temp_mode);
+      tcsetattr(0,TCSANOW,&initial_tty_mode);
+      saved = 1;
+    }
+
+    /* call the break handling function, reset the flag */
+    do_break();
+
+    fflush(stdout);
+
+    /* after break we go back to saved settings */
+    if (using_oldshell && !replace_intr) {
+      SET_NONBLOCKING(1);
+    }
+    else if (saved) {
+      tcsetattr(0,TCSANOW,&temp_mode);
+    }
+
+    erts_smp_thr_progress_unblock();
+}
+
+static pid_t
+getpid(void)
+{
+   return get_bid(current_process());
+}
+
+int getpagesize(void)
+{
+   return 1024;
+}
+
+
+/* Fills in the systems representation of the jam/beam process identifier.
+** The Pid is put in STRING representation in the supplied buffer,
+** no interpretatione of this should be done by the rest of the
+** emulator. The buffer should be at least 21 bytes long.
+*/
+void sys_get_pid(char *buffer, size_t buffer_size){
+    pid_t p = getpid();
+    /* Assume the pid is scalar and can rest in an unsigned long... */
+    erts_snprintf(buffer, buffer_size, "%lu",(unsigned long) p);
+}
+
+int
+erts_sys_putenv_raw(char *key, char *value) {
+    return erts_sys_putenv(key, value);
+}
+int
+erts_sys_putenv(char *key, char *value)
+{
+    int res;
+
+    erts_smp_rwmtx_rwlock(&environ_rwmtx);
+    res = set_env(get_bid(current_process()), key,
+		  value);
+    erts_smp_rwmtx_rwunlock(&environ_rwmtx);
+    return res;
+}
+
+
+int
+erts_sys_unsetenv(char *key)
+{
+    int res;
+
+    erts_smp_rwmtx_rwlock(&environ_rwmtx);
+    res = set_env(get_bid(current_process()),key,NULL);
+    erts_smp_rwmtx_rwunlock(&environ_rwmtx);
+
+    return res;
+}
+
+int
+erts_sys_getenv__(char *key, char *value, size_t *size)
+{
+    int res;
+    char *orig_value = get_env(get_bid(current_process()), key);
+    if (!orig_value)
+	res = -1;
+    else {
+	size_t len = sys_strlen(orig_value);
+	if (len >= *size) {
+	    *size = len + 1;
+	    res = 1;
+	}
+	else {
+	    *size = len;
+	    sys_memcpy((void *) value, (void *) orig_value, len+1);
+	    res = 0;
+	}
+	free_buf((union SIGNAL **)&orig_value);
+    }
+    return res;
+}
+
+int
+erts_sys_getenv_raw(char *key, char *value, size_t *size) {
+    return erts_sys_getenv(key, value, size);
+}
+
+/*
+ * erts_sys_getenv
+ * returns:
+ *  -1, if environment key is not set with a value
+ *   0, if environment key is set and value fits into buffer res
+ *   1, if environment key is set but does not fit into buffer res
+ *      res is set with the needed buffer res value
+ */
+
+int
+erts_sys_getenv(char *key, char *value, size_t *size)
+{
+    int res;
+    erts_smp_rwmtx_rlock(&environ_rwmtx);
+    res = erts_sys_getenv__(key, value, size);
+    erts_smp_rwmtx_runlock(&environ_rwmtx);
+    return res;
+}
+
+void
+sys_init_io(void)
+{
+    fd_data = (struct fd_data *)
+	erts_alloc(ERTS_ALC_T_FD_TAB, max_files * sizeof(struct fd_data));
+    erts_smp_atomic_add_nob(&sys_misc_mem_sz,
+			    max_files * sizeof(struct fd_data));
+}
+
+extern const char pre_loaded_code[];
+extern Preload pre_loaded[];
+
+void erts_sys_alloc_init(void)
+{
+}
+
+void *erts_sys_alloc(ErtsAlcType_t t, void *x, Uint sz)
+{
+    void *res = malloc((size_t) sz);
+#if HAVE_ERTS_MSEG
+    if (!res) {
+	erts_mseg_clear_cache();
+	return malloc((size_t) sz);
+    }
+#endif
+    return res;
+}
+
+void *erts_sys_realloc(ErtsAlcType_t t, void *x, void *p, Uint sz)
+{
+    void *res = realloc(p, (size_t) sz);
+#if HAVE_ERTS_MSEG
+    if (!res) {
+	erts_mseg_clear_cache();
+	return realloc(p, (size_t) sz);
+    }
+#endif
+    return res;
+}
+
+void erts_sys_free(ErtsAlcType_t t, void *x, void *p)
+{
+    free(p);
+}
+
+/* Return a pointer to a vector of names of preloaded modules */
+
+Preload*
+sys_preloaded(void)
+{
+    return pre_loaded;
+}
+
+/* Return a pointer to preloaded code for module "module" */
+unsigned char*
+sys_preload_begin(Preload* p)
+{
+    return p->code;
+}
+
+/* Clean up if allocated */
+void sys_preload_end(Preload* p)
+{
+    /* Nothing */
+}
+
+/* Read a key from console (?) */
+
+int sys_get_key(fd)
+int fd;
+{
+    int c;
+    unsigned char rbuf[64];
+
+    fflush(stdout);		/* Flush query ??? */
+
+    if ((c = read(fd,rbuf,64)) <= 0) {
+      return c;
+    }
+
+    return rbuf[0];
+}
+
+
+#ifdef DEBUG
+
+extern int erts_initialized;
+void
+erl_assert_error(const char* expr, const char* func,
+		 const char* file, int line)
+{
+    fflush(stdout);
+    fprintf(stderr, "%s:%d:%s() Assertion failed: %s\n",
+	    file, func, line, expr);
+    fflush(stderr);
+    ramlog_printf("%s:%d:%s() Assertion failed: %s\n",
+		  file, func, line, expr);
+
+    abort();
+}
+
+void
+erl_debug(char* fmt, ...)
+{
+    char sbuf[1024];		/* Temporary buffer. */
+    va_list va;
+
+    if (debug_log) {
+	va_start(va, fmt);
+	vsprintf(sbuf, fmt, va);
+	va_end(va);
+	fprintf(stderr, "%s", sbuf);
+    }
+}
+
+#endif /* DEBUG */
+
+static ERTS_INLINE void
+report_exit_status(ErtsSysReportExit *rep, int status)
+{
+   if (rep->ifd >= 0) {
+      driver_data[rep->ifd].alive = 0;
+      driver_data[rep->ifd].status = status;
+   }
+   if (rep->ofd >= 0) {
+      driver_data[rep->ofd].alive = 0;
+      driver_data[rep->ofd].status = status;
+   }
+
+   erts_free(ERTS_ALC_T_PRT_REP_EXIT, rep);
+}
+
+#define ERTS_REPORT_EXIT_STATUS report_exit_status
+
+/*
+ * Called from schedule() when it runs out of runnable processes,
+ * or when Erlang code has performed INPUT_REDUCTIONS reduction
+ * steps. runnable == 0 iff there are no runnable Erlang processes.
+ */
+void
+erl_sys_schedule(int runnable)
+{
+    ASSERT(get_fsem(current_process()) == 0);
+#ifdef ERTS_SMP
+    ASSERT(erts_get_scheduler_data()->no == 1);
+    ERTS_CHK_IO(!runnable);
+#else
+    ERTS_CHK_IO( 1 );
+#endif
+    ASSERT(get_fsem(current_process()) == 0);
+    ERTS_SMP_LC_ASSERT(!erts_thr_progress_is_blocking());
+}
+
+
+#ifdef ERTS_SMP
+
+void
+erts_sys_main_thread(void)
+{
+    erts_thread_disable_fpe();
+
+    /* Become signal receiver thread... */
+#ifdef ERTS_ENABLE_LOCK_CHECK
+    erts_lc_set_thread_name("signal_receiver");
+#endif
+
+    while (1) {
+       static const SIGSELECT sigsel[] = {0};
+       union SIGNAL *msg = receive(sigsel);
+
+       fprintf(stderr,"Main thread got message %d from 0x%x!!\r\n",
+               msg->sig_no, sender(&msg));
+       free_buf(&msg);
+    }
+}
+
+#endif /* ERTS_SMP */
+
+void
+erl_sys_args(int* argc, char** argv)
+{
+    int i, j;
+
+    erts_smp_rwmtx_init(&environ_rwmtx, "environ");
+
+    init_check_io();
+
+    /* Handled arguments have been marked with NULL. Slide arguments
+       not handled towards the beginning of argv. */
+    for (i = 0, j = 0; i < *argc; i++) {
+	if (argv[i])
+	    argv[j++] = argv[i];
+    }
+    *argc = j;
+
+}