* spawn.cc (av::dup_maybe): Make function void rather than void *.

* environ.cc (environ_init): Remember to reparse CYGWIN if envp is
supplied.
* heap.cc (_sbrk): Remember frame for signal handling.
* syscalls.cc (read_handler): Eliminate.
(_read): Move read_handler code here.  Reorganize for one path through
'ready_for_read'.

winsup/cygwin/ChangeLog

@@ -1,3 +1,13 @@
+2000-09-25  Christopher Faylor  <cgf@cygnus.com>
+
+	* spawn.cc (av::dup_maybe): Make function void rather than void *.
+	* environ.cc (environ_init): Remember to reparse CYGWIN if envp is
+	supplied.
+	* heap.cc (_sbrk): Remember frame for signal handling.
+	* syscalls.cc (read_handler): Eliminate.
+	(_read): Move read_handler code here.  Reorganize for one path through
+	'ready_for_read'.
+
 Tue Sep 19 09:46:36 2000  Christopher Faylor <cgf@cygnus.com>
 
 	* spawn.cc (spawn_guts): Use actual program argument passed in for

winsup/cygwin/environ.cc

@@ -524,6 +524,7 @@ environ_init (char **envp)
   char *p;
   char *newp;
   int sawTERM = 0;
+  bool envp_passed_in;
   static char cygterm[] = "TERM=cygwin";
 
   regopt ("default");
@@ -536,13 +537,16 @@ environ_init (char **envp)
     allow_ntsec = TRUE;
 #endif
 
-  if (envp)
+  if (!envp)
+    envp_passed_in = 0;
+  else
     {
       sz = envsize (envp, 1);
       char **newenv = (char **) malloc (sz);
       memcpy (newenv, envp, sz);
       cfree (envp);
       envp = newenv;
+      envp_passed_in = 1;
       goto out;
     }
 
@@ -585,6 +589,12 @@ environ_init (char **envp)
 out:
   __cygwin_environ = envp;
   update_envptrs ();
+  if (envp_passed_in)
+    {
+      p = getenv ("CYGWIN");
+      if (p)
+	parse_options (p);
+    }
   parse_options (NULL);
   MALLOC_CHECK;
 }

winsup/cygwin/heap.cc

@@ -86,6 +86,7 @@ heap_init ()
 extern "C" void *
 _sbrk(int n)
 {
+  sigframe thisframe (mainthread);
   char *newtop, *newbrk;
   unsigned commitbytes, newbrksize;
 

winsup/cygwin/spawn.cc

@@ -273,7 +273,7 @@ public:
 	calloced = 1;
       }
   }
-  void *dup_maybe (int i)
+  void dup_maybe (int i)
   {
     if (i >= calloced)
       argv[i] = cstrdup (argv[i]);

winsup/cygwin/syscalls.cc

@@ -194,24 +194,34 @@ setsid (void)
   return -1;
 }
 
-static int
-read_handler (int fd, void *ptr, size_t len)
+extern "C" int
+_read (int fd, void *ptr, size_t len)
 {
-  int res;
   sigframe thisframe (mainthread);
-  fhandler_base *fh = fdtab[fd];
-
   if (fdtab.not_open (fd))
     {
       set_errno (EBADF);
       return -1;
     }
 
-  if ((fh->get_flags() & (O_NONBLOCK | O_NDELAY)) && !fh->ready_for_read (fd, 0, 0))
+  set_sig_errno (0);
+  fhandler_base *fh = fdtab[fd];
+  DWORD wait = fh->get_flags () & (O_NONBLOCK | O_NDELAY) ? 0 : INFINITE;
+
+  /* Could block, so let user know we at least got here.  */
+  syscall_printf ("read (%d, %p, %d)", fd, ptr, len);
+
+  int res;
+  if (wait && (!fh->is_slow () || fh->get_r_no_interrupt ()))
+    debug_printf ("non-interruptible read\n");
+  else if (!fh->ready_for_read (fd, wait, 0))
     {
-      syscall_printf ("nothing to read");
-      set_errno (EAGAIN);
-      return -1;
+      if (!wait)
+	set_sig_errno (EAGAIN);
+      else
+	set_sig_errno (EINTR);
+      res = -1;
+      goto out;
     }
 
   /* Check to see if this is a background read from a "tty",
@@ -223,40 +233,13 @@ read_handler (int fd, void *ptr, size_t len)
       res = fh->read (ptr, len);
       myself->process_state &= ~PID_TTYIN;
     }
-  syscall_printf ("%d = read (%d<%s>, %p, %d)", res, fd, fh->get_name (), ptr, len);
-  return res;
-}
 
-extern "C" int
-_read (int fd, void *ptr, size_t len)
-{
-  if (fdtab.not_open (fd))
-    {
-      set_errno (EBADF);
-      return -1;
-    }
 
-  set_sig_errno (0);
-  fhandler_base *fh = fdtab[fd];
-
-  /* Could block, so let user know we at least got here.  */
-  syscall_printf ("read (%d, %p, %d)", fd, ptr, len);
-
-  if (!fh->is_slow () || (fh->get_flags () & (O_NONBLOCK | O_NDELAY)) ||
-      fh->get_r_no_interrupt ())
-    {
-      debug_printf ("non-interruptible read\n");
-      return read_handler (fd, ptr, len);
-    }
-
-  if (fh->ready_for_read (fd, INFINITE, 0))
-    return read_handler (fd, ptr, len);
-
-  set_sig_errno (EINTR);
+out:
   syscall_printf ("%d = read (%d<%s>, %p, %d), errno %d", -1, fd, fh->get_name (),
 		  ptr, len, get_errno ());
   MALLOC_CHECK;
-  return -1;
+  return res;
 }
 
 extern "C"

winsup/cygwin/thread.h

@@ -151,9 +151,9 @@ HANDLE win32_obj_id;
 UINT return_value;
 bool used;
 char joinable;       // for thread only
-bool HandleOke () {return win32_obj_id;};
+bool HandleOke () {return win32_obj_id;}
 virtual void Destroy ();
-virtual int Id () {return (int) win32_obj_id;};
+virtual int Id () {return (int) win32_obj_id;}
 };
 
 class ThreadItem:public MTitem
@@ -165,7 +165,7 @@ void *arg;
 void *return_ptr;
 bool suspended;
 DWORD thread_id;
-DWORD GetThreadId () {return thread_id;};
+DWORD GetThreadId () {return thread_id;}
 
 /* signal handling */
 struct sigaction *sigs;