Pass process_environment_t * to tor_spawn_background

Now tor_spawn_background's prototype is OS-independent.

src/common/util.c

@@ -3313,11 +3313,7 @@ process_handle_new(void)
  */
 int
 tor_spawn_background(const char *const filename, const char **argv,
-#ifdef _WIN32
-                     LPVOID envp,
-#else
-                     const char **envp,
-#endif
+                     process_environment_t *env,
                      process_handle_t **process_handle_out)
 {
 #ifdef _WIN32
@@ -3398,7 +3394,7 @@ tor_spawn_background(const char *const filename, const char **argv,
   /*(TODO: set CREATE_NEW CONSOLE/PROCESS_GROUP to make GetExitCodeProcess()
    * work?) */
                  0,             // creation flags
-                 envp,          // use parent's environment
+                 (env==NULL) ? NULL : env->windows_environment_block,
                  NULL,          // use parent's current directory
                  &siStartInfo,  // STARTUPINFO pointer
                  &(process_handle->pid));  // receives PROCESS_INFORMATION
@@ -3528,8 +3524,8 @@ tor_spawn_background(const char *const filename, const char **argv,
     /* Call the requested program. We need the cast because
        execvp doesn't define argv as const, even though it
        does not modify the arguments */
-    if (envp)
-      execve(filename, (char *const *) argv, (char*const*)envp);
+    if (env)
+      execve(filename, (char *const *) argv, env->unixoid_environment_block);
     else
       execvp(filename, (char *const *) argv);
 

src/common/util.h

@@ -365,12 +365,9 @@ void tor_check_port_forwarding(const char *filename,
                                int dir_port, int or_port, time_t now);
 
 typedef struct process_handle_t process_handle_t;
+typedef struct process_environment_t process_environment_t;
 int tor_spawn_background(const char *const filename, const char **argv,
-#ifdef _WIN32
-                         LPVOID envp,
-#else
-                         const char **envp,
-#endif
+                         process_environment_t *env,
                          process_handle_t **process_handle_out);
 
 #define SPAWN_ERROR_MESSAGE "ERR: Failed to spawn background process - code "
@@ -386,13 +383,9 @@ struct process_environment_t {
    * NUL-terminated strings of the form "NAME=VALUE". */
   char *windows_environment_block;
   /** A pointer to a NULL-terminated array of pointers to
-   * NUL-terminated strings of the form "NAME=VALUE".
-   *
-   * XXXX This should have type char **, but tor_spawn_background's
-   * prototype is incorrect. */
-  const char **unixoid_environment_block;
+   * NUL-terminated strings of the form "NAME=VALUE". */
+  char **unixoid_environment_block;
 };
-typedef struct process_environment_t process_environment_t;
 
 process_environment_t *process_environment_make(struct smartlist_t *env_vars);
 void process_environment_free(process_environment_t *env);

src/or/transports.c

@@ -288,12 +288,12 @@ launch_managed_proxy(managed_proxy_t *mp)
   /* Passing NULL as lpApplicationName makes Windows search for the .exe */
   retval = tor_spawn_background(NULL,
                                 (const char **)mp->argv,
-                                env->windows_environment_block,
+                                env,
                                 &mp->process_handle);
 #else
   retval = tor_spawn_background(mp->argv[0],
                                 (const char **)mp->argv,
-                                env->unixoid_environment_block,
+                                env,
                                 &mp->process_handle);
 #endif