#define OFF_T off_t
#endif
-/**
- * Opaque handle used to access files.
- */
-struct GNUNET_DISK_FileHandle;
-
/**
* Handle used to manage a pipe.
*/
* @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);
/**
- * Get the size of the file (or directory)
- * of the given file (in bytes).
+ * Get the size of the file (or directory) of the given file (in
+ * bytes).
*
* @param filename name of the file or directory
* @param size set to the size of the file (or,
* of all sizes of files in the directory)
* @param includeSymLinks should symbolic links be
* included?
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ * @param singleFileMode GNUNET_YES to only get size of one file
+ * and return GNUNET_SYSERR for directories.
+ * @return GNUNET_SYSERR on error, GNUNET_OK on success
*/
int
GNUNET_DISK_file_size (const char *filename, uint64_t * size,
- int includeSymLinks);
+ int includeSymLinks, int singleFileMode);
/**
/**
* Creates an interprocess channel
- * @param blocking creates an asynchronous pipe if set to GNUNET_NO
+ *
+ * @param blocking_read creates an asynchronous pipe for reading if set to GNUNET_NO
+ * @param blocking_write creates an asynchronous pipe for writing if set to GNUNET_NO
* @param inherit_read 1 to make read handle inheritable, 0 otherwise (NT only)
* @param inherit_write 1 to make write handle inheritable, 0 otherwise (NT only)
* @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_read creates an asynchronous pipe for reading if set to GNUNET_NO
+ * @param blocking_write creates an asynchronous pipe for writing 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
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
int
GNUNET_DISK_file_sync (const struct GNUNET_DISK_FileHandle *h);
-/**
- * Creates a named pipe/FIFO and opens it
- * @param fn pointer to the name of the named pipe or to NULL
- * @param flags open flags
- * @param perm access permissions
- * @return pipe handle on success, NULL on error
- */
-struct GNUNET_DISK_FileHandle *
-GNUNET_DISK_npipe_create (char **fn, enum GNUNET_DISK_OpenFlags flags,
- enum GNUNET_DISK_AccessPermissions perm);
-
-/**
- * Opens already existing named pipe/FIFO
- *
- * @param fn name of an existing named pipe
- * @param flags open flags
- * @param perm access permissions
- * @return pipe handle on success, NULL on error
- */
-struct GNUNET_DISK_FileHandle *
-GNUNET_DISK_npipe_open (const char *fn, enum GNUNET_DISK_OpenFlags flags,
- enum GNUNET_DISK_AccessPermissions perm);
-
-/**
- * Closes a named pipe/FIFO
- * @param pipe named pipe
- * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
- */
-int
-GNUNET_DISK_npipe_close (struct GNUNET_DISK_FileHandle *pipe);
#if 0 /* keep Emacsens' auto-indent happy */
{