/*
This file is part of GNUnet.
- (C) 2001-2012 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2001-2012 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
- * @file include/gnunet_disk_lib.h
- * @brief disk IO apis
* @author Christian Grothoff
+ *
+ * @file
+ * Disk IO APIs
+ *
+ * @defgroup disk Disk library
+ * Disk IO APIs
+ * @{
*/
#ifndef GNUNET_DISK_LIB_H
#define GNUNET_DISK_LIB_H
-#if WINDOWS
-#define OFF_T uint64_t
-#else
-#define OFF_T off_t
-#endif
-
/**
* Handle used to manage a pipe.
*/
*/
enum GNUNET_FILE_Type
{
+ /**
+ * Handle represents an event.
+ */
+ GNUNET_DISK_HANLDE_TYPE_EVENT,
+
/**
* Handle represents a file.
- */
- GNUNET_DISK_HANLDE_TYPE_FILE,
+ */
+ GNUNET_DISK_HANLDE_TYPE_FILE,
/**
* Handle represents a pipe.
* Read-only memory map.
*/
GNUNET_DISK_MAP_TYPE_READ = 1,
-
+
/**
* Write-able memory map.
*/
* Checks whether a handle is invalid
*
* @param h handle to check
- * @return GNUNET_YES if invalid, GNUNET_NO if valid
+ * @return #GNUNET_YES if invalid, #GNUNET_NO if valid
*/
int
GNUNET_DISK_handle_invalid (const struct GNUNET_DISK_FileHandle *h);
* @param whence specification to which position the offset parameter relates to
* @return the new position on success, GNUNET_SYSERR otherwise
*/
-OFF_T
-GNUNET_DISK_file_seek (const struct GNUNET_DISK_FileHandle *h, OFF_T offset,
+off_t
+GNUNET_DISK_file_seek (const struct GNUNET_DISK_FileHandle *h, off_t offset,
enum GNUNET_DISK_Seek whence);
* @return #GNUNET_SYSERR on error, #GNUNET_OK on success
*/
int
-GNUNET_DISK_file_size (const char *filename, uint64_t *size,
- int include_symbolic_links,
+GNUNET_DISK_file_size (const char *filename,
+ uint64_t *size,
+ int include_symbolic_links,
int single_file_mode);
* @param filename name of the file
* @param dev set to the device ID
* @param ino set to the inode ID
- * @return GNUNET_OK on success
+ * @return #GNUNET_OK on success
*/
int
-GNUNET_DISK_file_get_identifiers (const char *filename,
+GNUNET_DISK_file_get_identifiers (const char *filename,
uint64_t *dev,
uint64_t *ino);
* @return IO handle on success, NULL on error
*/
struct GNUNET_DISK_FileHandle *
-GNUNET_DISK_file_open (const char *fn,
+GNUNET_DISK_file_open (const char *fn,
enum GNUNET_DISK_OpenFlags flags,
enum GNUNET_DISK_AccessPermissions perm);
*/
int
GNUNET_DISK_file_handle_size (struct GNUNET_DISK_FileHandle *fh,
- OFF_T *size);
+ off_t *size);
/**
* @return handle to the new pipe, NULL on error
*/
struct GNUNET_DISK_PipeHandle *
-GNUNET_DISK_pipe (int blocking_read,
- int blocking_write,
- int inherit_read,
+GNUNET_DISK_pipe (int blocking_read,
+ int blocking_write,
+ int inherit_read,
int inherit_write);
* @return handle to the new pipe, NULL on error
*/
struct GNUNET_DISK_PipeHandle *
-GNUNET_DISK_pipe_from_fd (int blocking_read,
- int blocking_write,
+GNUNET_DISK_pipe_from_fd (int blocking_read,
+ int blocking_write,
int fd[2]);
GNUNET_DISK_get_handle_from_w32_handle (HANDLE osfh);
#endif
+/**
+ * Update POSIX permissions mask of a file on disk. If both argumets
+ * are #GNUNET_NO, the file is made world-read-write-executable (777).
+ * Does nothing on W32.
+ *
+ * @param fn name of the file to update
+ * @param require_uid_match #GNUNET_YES means 700
+ * @param require_gid_match #GNUNET_YES means 770 unless @a require_uid_match is set
+ */
+void
+GNUNET_DISK_fix_permissions (const char *fn,
+ int require_uid_match,
+ int require_gid_match);
+
/**
* Get a handle from a native integer FD.
* @return the number of bytes read on success, #GNUNET_SYSERR on failure
*/
ssize_t
-GNUNET_DISK_file_read (const struct GNUNET_DISK_FileHandle *h,
+GNUNET_DISK_file_read (const struct GNUNET_DISK_FileHandle *h,
void *result,
size_t len);
*/
ssize_t
GNUNET_DISK_fn_read (const char *fn,
- void *result,
+ void *result,
size_t len);
*/
ssize_t
GNUNET_DISK_file_write (const struct GNUNET_DISK_FileHandle *h,
- const void *buffer,
+ const void *buffer,
size_t n);
*/
ssize_t
GNUNET_DISK_file_write_blocking (const struct GNUNET_DISK_FileHandle *h,
- const void *buffer,
+ const void *buffer,
size_t n);
*/
ssize_t
GNUNET_DISK_fn_write (const char *fn,
- const void *buffer,
+ const void *buffer,
size_t n,
enum GNUNET_DISK_AccessPermissions mode);
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
-GNUNET_DISK_file_copy (const char *src, const char *dst);
+GNUNET_DISK_file_copy (const char *src,
+ const char *dst);
/**
void *callback_cls);
-/**
- * Opaque handle used for iterating over a directory.
- */
-struct GNUNET_DISK_DirectoryIterator;
-
-
-/**
- * Function called to iterate over a directory.
- *
- * @param cls closure
- * @param di argument to pass to #GNUNET_DISK_directory_iterator_next to
- * get called on the next entry (or finish cleanly);
- * NULL on error (will be the last call in that case)
- * @param filename complete filename (absolute path)
- * @param dirname directory name (absolute path)
- */
-typedef void (*GNUNET_DISK_DirectoryIteratorCallback) (void *cls,
- struct GNUNET_DISK_DirectoryIterator *di,
- const char *filename,
- const char *dirname);
-
-
-/**
- * This function must be called during the DiskIteratorCallback
- * (exactly once) to schedule the task to process the next
- * filename in the directory (if there is one).
- *
- * @param iter opaque handle for the iterator
- * @param can set to #GNUNET_YES to terminate the iteration early
- * @return #GNUNET_YES if iteration will continue,
- * #GNUNET_NO if this was the last entry (and iteration is complete),
- * #GNUNET_SYSERR if @a can was #GNUNET_YES
- */
-int
-GNUNET_DISK_directory_iterator_next (struct GNUNET_DISK_DirectoryIterator *iter,
- int can);
-
-
-/**
- * Scan a directory for files using the scheduler to run a task for
- * each entry. The name of the directory must be expanded first (!).
- * If a scheduler does not need to be used, GNUNET_DISK_directory_scan
- * may provide a simpler API.
- *
- * @param prio priority to use
- * @param dir_name the name of the directory
- * @param callback the method to call for each file
- * @param callback_cls closure for @a callback
- * @return #GNUNET_YES if directory is not empty and @a callback
- * will be called later, #GNUNET_NO otherwise, #GNUNET_SYSERR on error.
- */
-int
-GNUNET_DISK_directory_iterator_start (enum GNUNET_SCHEDULER_Priority prio,
- const char *dir_name,
- GNUNET_DISK_DirectoryIteratorCallback
- callback, void *callback_cls);
-
-
/**
* Create the directory structure for storing
* a file.
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
-GNUNET_DISK_file_lock (struct GNUNET_DISK_FileHandle *fh,
- OFF_T lock_start,
- OFF_T lock_end, int excl);
+GNUNET_DISK_file_lock (struct GNUNET_DISK_FileHandle *fh,
+ off_t lock_start,
+ off_t lock_end, int excl);
/**
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
-GNUNET_DISK_file_unlock (struct GNUNET_DISK_FileHandle *fh,
- OFF_T unlock_start,
- OFF_T unlock_end);
+GNUNET_DISK_file_unlock (struct GNUNET_DISK_FileHandle *fh,
+ off_t unlock_start,
+ off_t unlock_end);
/**
* @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
*/
int
-GNUNET_DISK_file_change_owner (const char *filename, const char *user);
-
-
-/**
- * Construct full path to a file inside of the private
- * directory used by GNUnet. Also creates the corresponding
- * directory. If the resulting name is supposed to be
- * a directory, end the last argument in '/' (or pass
- * DIR_SEPARATOR_STR as the last argument before NULL).
- *
- * @param cfg configuration to use
- * @param service_name name of the service asking
- * @param ... is NULL-terminated list of
- * path components to append to the
- * private directory name.
- * @return the constructed filename
- */
-char *
-GNUNET_DISK_get_home_filename (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *service_name, ...);
+GNUNET_DISK_file_change_owner (const char *filename,
+ const char *user);
/**
void *
GNUNET_DISK_file_map (const struct GNUNET_DISK_FileHandle *h,
struct GNUNET_DISK_MapHandle **m,
- enum GNUNET_DISK_MapType access, size_t len);
+ enum GNUNET_DISK_MapType access,
+ size_t len);
+
/**
* Unmap a file
int
GNUNET_DISK_file_unmap (struct GNUNET_DISK_MapHandle *h);
+
/**
* Write file changes to disk
+ *
* @param h handle to an open file
* @return #GNUNET_OK on success, #GNUNET_SYSERR otherwise
*/
}
#endif
-
/* ifndef GNUNET_DISK_LIB_H */
#endif
+
+/** @} */ /* end of group */
+
/* end of gnunet_disk_lib.h */
projects / oweals / gnunet.git / blobdiff