Refactor several utility functions

jni/include/utils.h

@@ -75,21 +75,18 @@ unsigned get_radio_uid();
 int check_data();
 int file_to_vector(const char* filename, struct vector *v);
 int vector_to_file(const char* filename, struct vector *v);
-int isNum(const char *s);
 ssize_t fdgets(char *buf, size_t size, int fd);
 void ps(void (*func)(int));
 void ps_filter_proc_name(const char *filter, void (*func)(int));
 int create_links(const char *bin, const char *path);
 void unlock_blocks();
 void setup_sighandlers(void (*handler)(int));
-int run_command(char *const argv[]);
-int run_command2(int err, int *fd, void (*cb)(void), char *const argv[]);
+int exec_command(int err, int *fd, void (*cb)(void), const char *argv0, ...);
+int exec_command_sync(char *const argv0, ...);
 int mkdir_p(const char *pathname, mode_t mode);
 int bind_mount(const char *from, const char *to);
 int open_new(const char *filename);
 int cp_afc(const char *source, const char *target);
-int clone_dir(const char *source, const char *target);
-void rm_rf(const char *target);
 void fclone_attr(const int sourcefd, const int targetfd);
 void clone_attr(const char *source, const char *target);
 void get_client_cred(int fd, struct ucred *cred);

jni/include/vector.h

@@ -32,4 +32,4 @@ struct vector *vec_dup(struct vector *v);
 	e = v ? (v)->data[(v)->size - 1] : NULL; \
 	for (size_t _ = (v)->size; v && _ > 0; --_, e = (v)->data[_ - 1])
 
-#endif
+#endif