Add and use rtems_libio_exit_helper. Add rtems_libio_exit().
The fclose(stdin) etc. makes no sense during exit. This would use the
_REENT structure of the thread calling _exit().
The output of the modules.html is much improved. Most
filesystem and POSIX API related groups are properly nested.
Some formatting issues were addressed as were multiple
inconsistencies.
The work areas (RTEMS work space and C program heap) will be initialized
now in a separate step and are no longer part of
rtems_initialize_data_structures(). Initialization is performed with
tables of Heap_Area entries. This allows usage of scattered memory
areas present on various small scale micro-controllers.
The sbrk() support API changes also. The bsp_sbrk_init() must now deal
with a minimum size for the first memory chunk to take the configured
work space size into account.
Rename rtems_filesystem_location_exists_in_same_fs_instance_as() into
rtems_filesystem_location_exists_in_same_instance_as() for consistency
with other file system instance related functions.
Rename rtems_filesystem_location_is_root() into
rtems_filesystem_location_is_instance_root() to distinguish this from
the file system root directory of the current task environment.
The header file <rtems/malloc.h> provides now also the malloc_walk()
prototype.
The malloc_walk() prototype reflects now the _Protected_heap_Walk() API.
The return status helps to print only in case of an error.
The pathconf_limits_and_options field of
rtems_filesystem_mount_table_entry_t is now a const pointer to reduce
the read-write memory demands of file system instances.
The scope of the file system operations is the file system instance.
The scope of the file system node handlers is the file location. The
benefit of moving the operations to the mount table entry is a size
reduction of the file location (rtems_filesystem_location_info_t). The
code size is slightly increased due to additional load instructions.
Restructure rtems_filesystem_mount_table_entry_t to improve cache
efficiency.
It is now the responsibility of the read() and write() handler to update
the offset field of the IO descriptor (rtems_libio_t). This change
makes it possible to protect the IO descriptor from concurrent access by
per file locks.
Nick Withers
Sebastian Huber
Joel Sherrill
Alex Ivanov
Mathew Kallada
Gedare Bloom