From 82d84b497131d27832c5e0250b89ade75bf3d6b7 Mon Sep 17 00:00:00 2001
From: yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 21 Dec 2008 05:27:06 +0000
Subject: merges r20528 from trunk into ruby_1_9_1. 	* win32/win32.c
 (rb_w32_read): ERROR_BROKEN_PIPE is not a real error 	  at this point.

	* io.c (pipe_open): use rb_w32_spawn() instead of rb_w32_pipe_exec()
	  to use our own redirection scheme.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@20897 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 io.c | 48 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

(limited to 'io.c')

diff --git a/io.c b/io.c
index dc5e111dd5..5e28486e42 100644
--- a/io.c
+++ b/io.c
@@ -4450,6 +4450,7 @@ pipe_open(struct rb_exec_arg *eargp, VALUE prog, const char *modestr, int fmode,
     const char *exename = NULL;
     volatile VALUE cmdbuf;
     struct rb_exec_arg sarg;
+    int pair[2], write_pair[2];
 #endif
     FILE *fp = 0;
     int fd = -1;
@@ -4574,11 +4575,42 @@ pipe_open(struct rb_exec_arg *eargp, VALUE prog, const char *modestr, int fmode,
 	cmd = rb_w32_join_argv(RSTRING_PTR(cmdbuf), args);
 	rb_str_resize(argbuf, 0);
     }
+    switch (fmode & (FMODE_READABLE|FMODE_WRITABLE)) {
+      case FMODE_READABLE|FMODE_WRITABLE:
+        if (rb_pipe(write_pair) < 0)
+            rb_sys_fail(cmd);
+        if (rb_pipe(pair) < 0) {
+            int e = errno;
+            close(write_pair[0]);
+            close(write_pair[1]);
+            errno = e;
+            rb_sys_fail(cmd);
+        }
+        if (eargp) {
+            rb_exec_arg_addopt(eargp, INT2FIX(0), INT2FIX(write_pair[0]));
+            rb_exec_arg_addopt(eargp, INT2FIX(1), INT2FIX(pair[1]));
+        }
+	break;
+      case FMODE_READABLE:
+        if (rb_pipe(pair) < 0)
+            rb_sys_fail(cmd);
+        if (eargp)
+            rb_exec_arg_addopt(eargp, INT2FIX(1), INT2FIX(pair[1]));
+	break;
+      case FMODE_WRITABLE:
+        if (rb_pipe(pair) < 0)
+            rb_sys_fail(cmd);
+        if (eargp)
+            rb_exec_arg_addopt(eargp, INT2FIX(0), INT2FIX(pair[0]));
+	break;
+      default:
+        rb_sys_fail(cmd);
+    }
     if (eargp) {
 	rb_exec_arg_fixup(eargp);
 	rb_run_exec_options(eargp, &sarg);
     }
-    while ((pid = rb_w32_pipe_exec(cmd, exename, openmode, &fd, &write_fd)) == -1) {
+    while ((pid = rb_w32_spawn(P_NOWAIT, cmd, exename)) == -1) {
 	/* exec failed */
 	switch (errno) {
 	  case EAGAIN:
@@ -4596,6 +4628,20 @@ pipe_open(struct rb_exec_arg *eargp, VALUE prog, const char *modestr, int fmode,
     }
     if (eargp)
 	rb_run_exec_options(&sarg, NULL);
+    if ((fmode & FMODE_READABLE) && (fmode & FMODE_WRITABLE)) {
+        close(pair[1]);
+        fd = pair[0];
+        close(write_pair[0]);
+        write_fd = write_pair[1];
+    }
+    else if (fmode & FMODE_READABLE) {
+        close(pair[1]);
+        fd = pair[0];
+    }
+    else {
+        close(pair[0]);
+        fd = pair[1];
+    }
 #else
     if (argc) {
 	prog = rb_ary_join(rb_ary_new4(argc, argv), rb_str_new2(" "));
-- 
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