diff options
Diffstat (limited to 'cpukit/libcsupport/include/rtems/libio.h')
| -rw-r--r-- | cpukit/libcsupport/include/rtems/libio.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/cpukit/libcsupport/include/rtems/libio.h b/cpukit/libcsupport/include/rtems/libio.h index 4669cb52e1..8226d18ba2 100644 --- a/cpukit/libcsupport/include/rtems/libio.h +++ b/cpukit/libcsupport/include/rtems/libio.h @@ -977,6 +977,28 @@ typedef int (*rtems_filesystem_kqfilter_t)( ); /** + * @brief MMAP support. + * + * @param[in, out] iop The IO pointer. + * @param[in, out] addr The starting address of the mapped memory. + * @param[in] len The maximum number of bytes to map. + * @param[in] prot The desired memory protection. + * @param[in] off The offset within the file descriptor to map. + * + * @retval 0 Successful operation. + * @retval error An error occurred. This is usually EINVAL. + * + * @see rtems_filesystem_default_mmap(). + */ +typedef int (*rtems_filesystem_mmap_t)( + rtems_libio_t *iop, + void **addr, + size_t len, + int prot, + off_t off +); + +/** * @brief File system node operations table. */ struct _rtems_filesystem_file_handlers_r { @@ -995,6 +1017,7 @@ struct _rtems_filesystem_file_handlers_r { rtems_filesystem_kqfilter_t kqfilter_h; rtems_filesystem_readv_t readv_h; rtems_filesystem_writev_t writev_h; + rtems_filesystem_mmap_t mmap_h; }; /** @@ -1216,6 +1239,21 @@ int rtems_filesystem_default_kqfilter( struct knote *kn ); +/** + * @brief Default MMAP handler. + * + * @retval ENOTSUP Always. + * + * @see rtems_filesystem_mmap_t. + */ +int rtems_filesystem_default_mmap( + rtems_libio_t *iop, + void **addr, + size_t len, + int prot, + off_t off +); + /** @} */ /** |