RTEMS File Systems Buffer Routines. More...
#include <sys/stat.h>#include <inttypes.h>#include <errno.h>#include <fcntl.h>#include <string.h>#include <rtems/rfs/rtems-rfs-buffer.h>#include <rtems/rfs/rtems-rfs-file-system.h>
Include dependency graph for rtems-rfs-buffer.c:
Functions | |
| int | rtems_rfs_buffer_handle_request (rtems_rfs_file_system *fs, rtems_rfs_buffer_handle *handle, rtems_rfs_buffer_block block, bool read) |
| Request a buffer. More... | |
| int | rtems_rfs_buffer_handle_release (rtems_rfs_file_system *fs, rtems_rfs_buffer_handle *handle) |
| Release a buffer. More... | |
| int | rtems_rfs_buffer_open (const char *name, rtems_rfs_file_system *fs) |
| Open the buffer interface. More... | |
| int | rtems_rfs_buffer_close (rtems_rfs_file_system *fs) |
| Close the buffer interface. More... | |
| int | rtems_rfs_buffer_sync (rtems_rfs_file_system *fs) |
| Sync all buffers to the media. More... | |
| int | rtems_rfs_buffer_setblksize (rtems_rfs_file_system *fs, size_t size) |
| Set the block size of the device. More... | |
| int | rtems_rfs_buffers_release (rtems_rfs_file_system *fs) |
| Release any chained buffers. More... | |
Detailed Description
RTEMS File Systems Buffer Routines.
Function Documentation
◆ rtems_rfs_buffer_close()
| int rtems_rfs_buffer_close | ( | rtems_rfs_file_system * | fs | ) |
Close the buffer interface.
- Parameters
-
[in] fs is the file system data.
- Return values
-
0 Successful operation. error_code An error occurred.
◆ rtems_rfs_buffer_handle_release()
| int rtems_rfs_buffer_handle_release | ( | rtems_rfs_file_system * | fs, |
| rtems_rfs_buffer_handle * | handle | ||
| ) |
Release a buffer.
If the buffer is dirty the buffer is written to disk. The result does not indicate if the data was successfully written to the disk as this operation may be performed in asynchronously to this release.
- Parameters
-
[in] fs is the file system data. [in] handle is the handle the requested buffer is attached to.
- Return values
-
0 Successful operation. error_code An error occurred.
Referenced by rtems_rfs_file_io_release().
◆ rtems_rfs_buffer_handle_request()
| int rtems_rfs_buffer_handle_request | ( | rtems_rfs_file_system * | fs, |
| rtems_rfs_buffer_handle * | handle, | ||
| rtems_rfs_buffer_block | block, | ||
| bool | read | ||
| ) |
Request a buffer.
The buffer can be filled with data from the media (read == true) or you can request a buffer to fill with data.
- Parameters
-
[in] fs is the file system data. [in] handle is the handle the requested buffer is attached to. [in] block is the block number. [in] read Read the data from the disk.
- Return values
-
0 Successful operation. error_code An error occurred.
◆ rtems_rfs_buffer_open()
| int rtems_rfs_buffer_open | ( | const char * | name, |
| rtems_rfs_file_system * | fs | ||
| ) |
Open the buffer interface.
- Parameters
-
[in] name is a pointer to the device name to the media. [in] fs is the file system data.
- Return values
-
0 Successful operation. error_code An error occurred.
◆ rtems_rfs_buffer_setblksize()
| int rtems_rfs_buffer_setblksize | ( | rtems_rfs_file_system * | fs, |
| size_t | size | ||
| ) |
Set the block size of the device.
- Parameters
-
[in] fs is the file system data. [in] size is the new block size.
- Return values
-
0 Successful operation. error_code An error occurred.
◆ rtems_rfs_buffer_sync()
| int rtems_rfs_buffer_sync | ( | rtems_rfs_file_system * | fs | ) |
Sync all buffers to the media.
- Parameters
-
[in] fs is the file system data.
- Return values
-
0 Successful operation. error_code An error occurred.
Referenced by rtems_rfs_rtems_fdatasync().
◆ rtems_rfs_buffers_release()
| int rtems_rfs_buffers_release | ( | rtems_rfs_file_system * | fs | ) |
Release any chained buffers.
- Parameters
-
[in] fs is the file system data.
- Return values
-
0 Successful operation. error_code An error occurred.
