1 files changed, 104 insertions, 0 deletions
diff --git a/ijs_exec_unix.c b/ijs_exec_unix.c
new file mode 100644
index 0000000..ea8e188
--- /dev/null
+++ b/ijs_exec_unix.c
@@ -0,0 +1,104 @@
+/**
+ * Copyright (c) 2001-2002 artofcode LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+**/
+
+#include "unistd_.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include "ijs.h"
+#include "ijs_client.h"
+
+int 
+ijs_exec_server(const char *server_cmd, int *pfd_to, int *pfd_from, 
+    int *pchild_pid)
+{
+  int fds_to[2], fds_from[2];
+  int child_pid;
+
+  if (pipe (fds_to) < 0)
+    return -1;
+  if (pipe (fds_from) < 0)
+    {
+      close (fds_to[0]);
+      close (fds_to[1]);
+      return -1;
+    }
+
+  child_pid = fork ();
+  if (child_pid < 0)
+    {
+      close (fds_to[0]);
+      close (fds_to[1]);
+      close (fds_from[0]);
+      close (fds_from[1]);
+      return -1;
+    }
+  if (child_pid == 0)
+    {
+      int status;
+      char *argv[8];
+      int i = 0;
+
+      close (fds_to[1]);
+      close (fds_from[0]);
+
+      dup2 (fds_to[0], STDIN_FILENO);
+      dup2 (fds_from[1], STDOUT_FILENO);
+#define noGDB
+#ifdef GDB
+      argv[i++] = "gdb";
+#endif
+
+      argv[i++] = "sh";
+      argv[i++] = "-c";
+
+      argv[i++] = (char *)server_cmd;
+      argv[i++] = NULL;
+      status = execvp (argv[0], argv);
+      if (status < 0)
+	exit (1);
+    }
+
+  /* Ignore SIGPIPE signals. This is the behaviour you'll want most of
+     the time, as the attempt to read or write to the pipe will fail
+     and the client will find out then. If the client needs to preserve
+     the SIGPIPE signal, it can either install its own signal handler
+     after this call, or hack the code.
+  */
+  signal (SIGPIPE, SIG_IGN);
+
+#ifdef VERBOSE
+  fprintf (stderr, "child_pid = %d; %d %d\n",
+	   child_pid, fds_to[0], fds_from[1]);
+#endif
+  close (fds_to[0]);
+  close (fds_from[1]);
+
+  *pfd_to = fds_to[1];
+  *pfd_from = fds_from[0];
+  *pchild_pid = child_pid;
+
+  return 0;
+}
+