1 files changed, 94 insertions, 0 deletions

diff --git a/src/arm/do_start_process.c b/src/arm/do_start_process.c
new file mode 100644
index 000000000..357d39920
--- /dev/null
+++ b/src/arm/do_start_process.c
@@ -0,0 +1,94 @@
+/**
+ * Actually start a process.  All of the arguments given to this
+ * function are strings that are used for the "argv" array.  However,
+ * if those strings contain spaces, the given argument is split into
+ * multiple argv entries without spaces.  Similarly, if an argument is
+ * the empty string, it is skipped.  This function has the inherent
+ * limitation that it does NOT allow passing command line arguments
+ * with spaces to the new process.
+ *
+ * @param first_arg first argument for argv (may be an empty string)
+ * @param ... more arguments, NULL terminated
+ * @return PID of the started process, -1 on error
+ */
+static pid_t
+do_start_process (const char *first_arg, ...)
+{
+  va_list ap;
+  char **argv;
+  unsigned int argv_size;
+  const char *arg;
+  const char *rpos;
+  char *pos;
+  char *cp;
+  const char *last;
+  pid_t pid;
+
+  argv_size = 1;
+  va_start (ap, first_arg);
+  arg = first_arg;
+  last = NULL;
+  do
+    {
+      rpos = arg;
+      while ('\0' != *rpos)
+        {
+          if (' ' == *rpos)
+            {
+              if (last != NULL)
+                argv_size++;
+              last = NULL;
+              while (' ' == *rpos)
+                rpos++;
+            } 
+          if ( (last == NULL) && (*rpos != '\0') )
+            last = rpos;
+          if (*rpos != '\0')
+            rpos++;
+        }      
+      if (last != NULL)
+        argv_size++;
+    }
+  while (NULL != (arg = (va_arg (ap, const char*))));
+  va_end (ap);
+
+  argv = GNUNET_malloc (argv_size * sizeof (char *));
+  argv_size = 0;
+  va_start (ap, first_arg);
+  arg = first_arg;
+  last = NULL;
+  do
+    {
+      cp = GNUNET_strdup (arg);
+      pos = cp;
+      while ('\0' != *pos)
+        {
+          if (' ' == *pos)
+            {
+              *pos = '\0';
+              if (last != NULL)
+                argv[argv_size++] = GNUNET_strdup (last);
+              last = NULL;
+              pos++;
+              while (' ' == *pos)
+                pos++;
+            }
+          if ( (last == NULL) && (*pos != '\0') ) 
+            last = pos;
+          if (*pos != '\0')
+            pos++;
+        }
+      if (last != NULL)
+        argv[argv_size++] = GNUNET_strdup (last);
+      last = NULL;
+      GNUNET_free (cp);
+    }
+  while (NULL != (arg = (va_arg (ap, const char*))));
+  va_end (ap);
+  argv[argv_size] = NULL;
+  pid = GNUNET_OS_start_process_v (argv[0], argv);
+  while (argv_size > 0)
+    GNUNET_free (argv[--argv_size]);
+  GNUNET_free (argv);
+  return pid;
+}