* @param whence specification to which position the offset parameter relates to
* @return the new position on success, GNUNET_SYSERR otherwise
*/
-uint64_t
-GNUNET_DISK_file_seek (const struct GNUNET_DISK_FileHandle *h, uint64_t offset,
+OFF_T
+GNUNET_DISK_file_seek (const struct GNUNET_DISK_FileHandle *h, OFF_T offset,
enum GNUNET_DISK_Seek whence);
* @return handle to the new pipe, NULL on error
*/
struct GNUNET_DISK_PipeHandle *
-GNUNET_DISK_pipe (int blocking, int inherit_read, int inherit_write);
+GNUNET_DISK_pipe (int blocking_read, int blocking_write, int inherit_read, int inherit_write);
+/**
+ * Creates a pipe object from a couple of file descriptors.
+ * Useful for wrapping existing pipe FDs.
+ *
+ * @param blocking creates an asynchronous pipe if set to GNUNET_NO
+ * @param fd an array of two fd values. One of them may be -1 for read-only or write-only pipes
+ *
+ * @return handle to the new pipe, NULL on error
+ */
+struct GNUNET_DISK_PipeHandle *
+GNUNET_DISK_pipe_from_fd (int blocking_read, int blocking_write, int fd[2]);
+
/**
* Closes an interprocess channel
* @param p pipe
GNUNET_DISK_file_read (const struct GNUNET_DISK_FileHandle *h, void *result,
size_t len);
+/**
+ * Read the contents of a binary file into a buffer.
+ * Guarantees not to block (returns GNUNET_SYSERR and sets errno to EAGAIN
+ * when no data can be read).
+ *
+ * @param h handle to an open file
+ * @param result the buffer to write the result to
+ * @param len the maximum number of bytes to read
+ * @return the number of bytes read on success, GNUNET_SYSERR on failure
+ */
+ssize_t
+GNUNET_DISK_file_read_non_blocking (const struct GNUNET_DISK_FileHandle * h,
+ void *result, size_t len);
/**
* Read the contents of a binary file into a buffer.
const void *buffer, size_t n);
+/**
+ * Write a buffer to a file, blocking, if necessary.
+ * @param h handle to open file
+ * @param buffer the data to write
+ * @param n number of bytes to write
+ * @return number of bytes written on success, GNUNET_SYSERR on error
+ */
+ssize_t
+GNUNET_DISK_file_write_blocking (const struct GNUNET_DISK_FileHandle * h,
+ const void *buffer, size_t n);
+
/**
* Write a buffer to a file. If the file is longer than
* the given buffer size, it will be truncated.
* @param dirName the name of the directory
* @param callback the method to call for each file
* @param callback_cls closure for callback
+ * @return GNUNET_YES if directory is not empty and @callback
+ * will be called later, GNUNET_NO otherwise, GNUNET_SYSERR on error.
*/
-void
+int
GNUNET_DISK_directory_iterator_start (enum GNUNET_SCHEDULER_Priority prio,
const char *dirName,
GNUNET_DISK_DirectoryIteratorCallback