Use execvp

Author: probonopd

src/runtime/runtime.c

@@ -5,7 +5,7 @@
  * as possible (one .c file) and use as few external dependencies
  * as possible
  *
- * Copyright (c) 2004-22 Simon Peter
+ * Copyright (c) 2004-24 Simon Peter
  * Portions Copyright (c) 2007 Alexander Larsson
  * Portions from WjCryptLib_Md5 originally written by Alexander Peslyak,
    modified by WaterJuice retaining Public Domain license
@@ -441,14 +441,33 @@ char* find_fusermount() {
                     char* fusermount_full_path = malloc(strlen(dir) + strlen(entry->d_name) + 2);
                     sprintf(fusermount_full_path, "%s/%s", dir, entry->d_name);
 
-                    // Check if the entry is executable
-                    if (access(fusermount_full_path, X_OK) == 0) {
-                        closedir(dir_ptr);
-                        free(path_copy);
-                        return fusermount_full_path;
+                    pid_t pid = fork();
+                    if (pid == -1) {
+                        perror("fork");
+                        free(fusermount_full_path);
+                        continue;
                     }
 
-                    free(fusermount_full_path);
+                    if (pid == 0) {
+                        // Child process
+                        char* args[] = {fusermount_full_path, NULL};
+                        execvp(fusermount_full_path, args);
+                        // If execvp returns, it means the executable was not found
+                        exit(1);
+                    } else {
+                        // Parent process
+                        int status;
+                        waitpid(pid, &status, 0);
+
+                        if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
+                            // The executable was found and executed successfully
+                            closedir(dir_ptr);
+                            free(path_copy);
+                            return fusermount_full_path;
+                        }
+
+                        free(fusermount_full_path);
+                    }
                 }
             }
         }