| Commit message (Collapse) | Author | Age | Files | Lines |
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The rtems_filesystem_location_info_t::node_access_2 was unused by the
IMFS. Use it to hold the context of generic nodes. This makes it
possible to use node handlers for objects with and without a
corresponding file system node.
For example network sockets created with socket() have only a file
descriptor, but no corresponding file system node. The UNIX(4) domain
sockets can be bound to file system nodes. In both cases the
rtems_filesystem_location_info_t must provide a pointer to the socket
structure used by the socket node handlers. With the context pointer
(for sockets, this is the socket structure) in
rtems_filesystem_location_info_t::node_access_2 the same node handlers
can be used in both cases.
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Return an error status with errno set to ENOSYS during node creation for
nodes not available in the current configuration.
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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.
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http://www.google-melange.com/gci/task/view/google/gci2012/8120204
Patch committed with fixes for whitespace issues.
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http://www.google-melange.com/gci/task/view/google/gci2012/8032207
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Reject the removal of file system instance root nodes in rmdir() and
unlink() and return the EBUSY error status. File system instances can
be removed with unmount(). Remove root node special cases in IMFS,
DOSFS, and RFS.
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Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
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According to POSIX the lseek() function shall not, by itself, extend the
size of a file.
Remove the size field of rtems_libio_t. A file has only one size but
may have multiple open file descriptors. Thus a file size field in the
file descriptor may lead to inconsistencies.
New default handlers rtems_filesystem_default_lseek_file() and
rtems_filesystem_default_lseek_directory().
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Generic nodes are an alternative to standard drivers in RTEMS. The
handlers of a generic node are called with less overhead compared to the
standard driver operations. The usage of file system node handlers
enable more features like support for fsync() and fdatasync(). The
generic nodes use the reference counting of the IMFS. This provides
automatic node destruction when the last reference vanishes.
Extend type IMFS_types_union by new type IMFS_generic_t.
Extend enum IMFS_jnode_types_t by IMFS_GENERIC.
Add functions
o IMFS_make_generic_node(),
o IMFS_is_imfs_instance(),
o IMFS_generic_get_context_by_node(),
o IMFS_generic_get_context_by_location(), and
o IMFS_generic_get_context_by_iop().
New test fstests/fsimfsgeneric01.
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Add and use structure IMFS_node_control with support functions. This
helps to make high level functions independent of the node type and
reduces the number of branches in the code.
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Add and use IMFS_type() and IMFS_is_directory().
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The introduction of reference counting of nodes avoids the removal of
open nodes and potential usage of freed memory.
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Directory entry add or removal operations are protected by the file
system instance lock. There is no need for protected chain operations.
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New defaults rtems_filesystem_default_fsync_or_fdatasync() and
rtems_filesystem_default_fsync_or_fdatasync_success() for fsync_h and
fdatasync_h. The rtems_filesystem_default_fsync_or_fdatasync() sets now
errno to EINVAL according to POSIX.
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o A new data structure rtems_filesystem_global_location_t was
introduced to be used for
o the mount point location in the mount table entry,
o the file system root location in the mount table entry,
o the root directory location in the user environment, and
o the current directory location in the user environment.
During the path evaluation global start locations are obtained to
ensure that the current file system instance will be not unmounted in
the meantime.
o The user environment uses now reference counting and is protected
from concurrent access.
o The path evaluation process was completely rewritten and simplified.
The IMFS, RFS, NFS, and DOSFS use now a generic path evaluation
method. Recursive calls in the path evaluation have been replaced
with iteration to avoid stack overflows. Only the evaluation of
symbolic links is recursive. No dynamic memory allocations and
intermediate buffers are used in the high level path evaluation. No
global locks are held during the file system instance specific path
evaluation process.
o Recursive symbolic link evaluation is now limited by
RTEMS_FILESYSTEM_SYMLOOP_MAX. Applications can retrieve this value
via sysconf().
o The device file system (devFS) uses now no global variables and
allocation from the workspace. Node names are allocated from the
heap.
o The upper layer lseek() performs now some parameter checks.
o The upper layer ftruncate() performs now some parameter checks.
o unmask() is now restricted to the RWX flags and protected from
concurrent access.
o The fchmod_h and rmnod_h file system node handlers are now a file
system operation.
o The unlink_h operation has been removed. All nodes are now destroyed
with the rmnod_h operation.
o New lock_h, unlock_h, clonenod_h, and are_nodes_equal_h file system
operations.
o The path evaluation and file system operations are now protected by
per file system instance lock and unlock operations.
o Fix and test file descriptor duplicate in fcntl().
o New test fstests/fsnofs01.
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PR1945/cpukit
* libfs/src/imfs/deviceio.c, libfs/src/imfs/imfs.h,
libfs/src/imfs/imfs_directory.c, libfs/src/imfs/imfs_fifo.c,
libfs/src/imfs/memfile.c: Replace rtems_off64_t with off_t.
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* libfs/src/imfs/imfs.h: Add IMFS_memfile_maximum_size.
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* include/rtems/bspIo.h, include/rtems/concat.h,
include/rtems/endian.h, include/rtems/fs.h, include/rtems/irq.h,
include/rtems/pci.h, include/rtems/userenv.h,
libblock/include/rtems/flashdisk.h,
libblock/include/rtems/nvdisk-sram.h,
libblock/include/rtems/nvdisk.h, libcsupport/include/clockdrv.h,
libcsupport/include/console.h, libcsupport/include/iosupp.h,
libcsupport/include/spurious.h,
libcsupport/include/motorola/mc68230.h,
libcsupport/include/rtems/assoc.h, libcsupport/include/rtems/error.h,
libcsupport/include/rtems/framebuffer.h,
libcsupport/include/rtems/gxx_wrappers.h,
libcsupport/include/rtems/libcsupport.h,
libcsupport/include/rtems/libio_.h,
libcsupport/include/rtems/malloc.h,
libcsupport/include/rtems/termiostypes.h,
libcsupport/include/sys/statvfs.h, libcsupport/include/sys/termios.h,
libcsupport/include/sys/utsname.h, libcsupport/include/zilog/z8036.h,
libcsupport/include/zilog/z8530.h, libcsupport/include/zilog/z8536.h,
libfs/src/imfs/imfs.h, libfs/src/pipe/pipe.h,
libmisc/capture/capture-cli.h, libmisc/capture/capture.h,
libmisc/cpuuse/cpuuse.h, libmisc/devnull/devnull.h,
libmisc/devnull/devzero.h, libmisc/dumpbuf/dumpbuf.h,
libmisc/fb/fb.h, libmisc/fb/mw_uid.h, libmisc/mouse/mouse_parser.h,
libmisc/shell/shellconfig.h, libmisc/stringto/stringto.h,
libmisc/untar/untar.h, libnetworking/memory.h, posix/include/aio.h,
posix/include/mqueue.h, posix/include/semaphore.h,
posix/include/rtems/posix/aio_misc.h,
posix/include/rtems/posix/barrier.h,
posix/include/rtems/posix/cond.h, posix/include/rtems/posix/config.h,
posix/include/rtems/posix/key.h, posix/include/rtems/posix/mqueue.h,
posix/include/rtems/posix/mutex.h,
posix/include/rtems/posix/posixapi.h,
posix/include/rtems/posix/priority.h,
posix/include/rtems/posix/psignal.h,
posix/include/rtems/posix/pthread.h,
posix/include/rtems/posix/ptimer.h,
posix/include/rtems/posix/rwlock.h,
posix/include/rtems/posix/semaphore.h,
posix/include/rtems/posix/sigset.h,
posix/include/rtems/posix/spinlock.h,
posix/include/rtems/posix/threadsup.h,
posix/include/rtems/posix/time.h, posix/include/rtems/posix/timer.h,
posix/inline/rtems/posix/barrier.inl,
posix/inline/rtems/posix/cond.inl,
posix/inline/rtems/posix/mqueue.inl,
posix/inline/rtems/posix/mutex.inl,
posix/inline/rtems/posix/priority.inl,
posix/inline/rtems/posix/pthread.inl,
posix/inline/rtems/posix/rwlock.inl,
posix/inline/rtems/posix/semaphore.inl,
posix/inline/rtems/posix/spinlock.inl,
posix/inline/rtems/posix/timer.inl, rtems/mainpage.h,
rtems/include/rtems/rtems/barrier.h,
rtems/include/rtems/rtems/object.h,
rtems/include/rtems/rtems/timer.h,
rtems/inline/rtems/rtems/barrier.inl,
rtems/inline/rtems/rtems/timer.inl,
rtems/src/semtranslatereturncode.c, sapi/include/rtems/config.h,
sapi/include/rtems/fatal.h, sapi/include/rtems/mptables.h,
score/include/rtems/score/object.h,
score/include/rtems/score/priority.h,
score/inline/rtems/score/object.inl,
score/inline/rtems/score/priority.inl: Add @file Doxygen directives
and descriptions to files which originated with RTEMS. This improves
the file list page generated by Doxygen.
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* libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_readlink.c: readlink
filesystem entry should return ssize_t.
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* libfs/src/imfs/imfs_fcntl.c: Removed file.
* libfs/Makefile.am: Reflect change from above.
* libfs/src/defaults/default_fcntl.c: Return 0 instead of -1 and errno.
* libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_fifo.c,
libfs/src/imfs/imfs_handlers_directory.c,
libfs/src/imfs/imfs_handlers_memfile.c, libfs/src/nfsclient/src/nfs.c,
libfs/src/rfs/rtems-rfs-rtems-dir.c,
libfs/src/rfs/rtems-rfs-rtems-file.c, libfs/src/rfs/rtems-rfs-rtems.c,
libfs/src/rfs/rtems-rfs-rtems.h: Use default file system handlers.
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* libfs/src/imfs/imfs.h: Fix typo.
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* libcsupport/src/fstat.c, libcsupport/src/rmdir.c,
libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_creat.c,
libfs/src/imfs/imfs_debug.c, libfs/src/imfs/imfs_getchild.c,
libfs/src/imfs/memfile.c: Add IMFS_assert. Clean up and remove all
checks which are redundant with system call layer. Formatting.
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* libfs/src/imfs/imfs.h: Changed IMFS_jnode_types_t to an enum.
Removed IMFS_NUMBER_OF_TYPES define.
* libfs/src/imfs/imfs_debug.c: Removed IMFS_types.
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* libfs/Makefile.am: Remove reference to imfs_free.c,
wrapup/Makefile.am: Split devfs into its own library.
* libfs/src/imfs/fifoimfs_init.c, libfs/src/imfs/imfs.h,
libfs/src/imfs/imfs_init.c, libfs/src/rfs/rtems-rfs-rtems.c:
Use default freenode implementation.
* libfs/src/imfs/imfs_free.c: Removed.
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PR 1614/filesystem
* libfs/src/imfs/fifoimfs_init.c, libfs/src/imfs/imfs.h,
libfs/src/imfs/imfs_load_tar.c: Fix rtems_tarfs_load to work with
pipe filesystem.
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* libfs/src/imfs/fifoimfs_init.c: New file.
* libfs/Makefile.am: Reflect change above.
* libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_eval.c,
libfs/src/imfs/imfs_init.c, libfs/src/imfs/imfs_initsupp.c,
libfs/src/imfs/miniimfs_init.c, libfs/src/pipe/fifo.c,
libfs/src/pipe/pipe.c, libfs/src/pipe/pipe.h: Pipe support is now
link-time optional.
* sapi/include/confdefs.h: Reflect changes above.
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* libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_rmnod.c: Added and use
IMFS_create_orphan() and IMFS_check_node_remove().
* libfs/src/imfs/deviceio.c, libfs/src/imfs/imfs_directory.c,
libfs/src/imfs/imfs_fifo.c: Use IMFS_create_orphan() and
IMFS_check_node_remove().
* libfs/src/imfs/imfs_handlers_memfile.c, libfs/src/imfs/memfile.c:
Use IMFS_rmnod() and IMFS_check_node_remove() instead of
memfile_rmnod() and memfile_check_rmnod().
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* libcsupport/Makefile.am: Add mount-mgr.c.
* libcsupport/src/mount-mgr.c: New.
* include/rtems/fs.h: Added rtems_filesystem_location_mount.
* libcsupport/include/rtems/libio.h, libcsupport/src/mount.c: New
mount interface. It is similar to Linux.
* libcsupport/include/rtems/libio_.h: Remove the
init_fs_mount_table call.
* libcsupport/src/base_fs.c: Remove init_fs_mount_table_call. Use
the new mount call. Remove setting the root node in the global
pathloc. Mount does this now.
* libcsupport/src/privateenv.c: Remove the hack to set the root
mount table entry in the environment.
* libcsupport/src/unmount.cL Free the target string.
* libblock/src/bdpart-mount.c: New mount API.
* libfs/src/devfs/devfs.h, libfs/src/devfs/devfs_init.c,
libfs/src/dosfs/dosfs.h, libfs/src/dosfs/msdos.h,
libfs/src/dosfs/msdos_init.c, libfs/src/imfs/imfs.h,
libfs/src/imfs/imfs_eval.c, libfs/src/imfs/imfs_init.c,
libfs/src/imfs/miniimfs_init.c,
libfs/src/nfsclient/src/librtemsNfs.h,
libfs/src/rfs/rtems-rfs-rtems.c, libfs/src/rfs/rtems-rfs.h,
libnetworking/lib/ftpfs.c, libnetworking/rtems/ftpfs.h,
libnetworking/rtems/tftp.h: New mount_h API.
* libfs/src/devfs/devfs_eval.c: Local include of extern ops.
* libfs/src/nfsclient/src/nfs.c: New mount API. Removed the mount
me call and fixed the initialisation to happen when mounting.
* libmisc/Makefile.am, libmisc/shell/shellconfig.h: Remove mount
filesystem files.
* libmisc/fsmount/fsmount.c, libmisc/fsmount/fsmount.h: Updated to
the new mount table values.
* libmisc/shell/main_mount_ftp.c,
libmisc/shell/main_mount_msdos.c, libmisc/shell/main_mount_rfs.c,
libmisc/shell/main_mount_tftp.c: Removed.
* libmisc/shell/main_mount.c: Use the new mount API. Also access
the file system table for the file system types.
* libnetworking/lib/tftpDriver.c: Updated to the new mount
API. Fixed to allow mounting from any mount point. Also can now
have more than file system mounted.
* sapi/include/confdefs.h: Add file system configuration support.
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* libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_eval.c:
Use size_t instead of int for pathnamelen.
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* libfs/src/imfs/imfs_initsupp.c, libfs/src/imfs/imfs.h,
libfs/src/imfs/imfs_stat.c: PR1419. Return a device for the IMFS.
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* libcsupport/include/rtems/libio.h, libcsupport/src/_rename_r.c:
Add a rename file op and have rename use it.
* libfs/Makefile.am, libfs/src/dosfs/msdos_rename.c,
libfs/src/imfs/imfs_rename.c: New files to support the rename file
op.
* libfs/src/imfs/imfs.h: Add rename interface.
* libfs/src/imfs/imfs_init.c: Add rename handler.
* libfs/src/imfs/miniimfs_init.c: Fix up ops struct.
* libfs/src/dosfs/msdos.h: Add msdos_rename and remove
msdos_file_link.
* libfs/src/dosfs/msdos_create.c: Remove the link call.
* libfs/src/dosfs/msdos_eval.c: Fix a path parsing bug.
* libfs/src/dosfs/msdos_init.c: Add rename handler and clean up
the struct naming.
* libfs/src/rfs/rtems-rfs-link.c, libfs/src/rfs/rtems-rfs-link.h:
Change the link call to allow linking of directories if told to
and change the unlink to handle unlink directories that are not
empty so rename can be supported.
* libfs/src/rfs/rtems-rfs-rtems-dir.c: Fix the link/unlink calls.
* libfs/src/rfs/rtems-rfs-rtems.c: Add a rename handler. Fix the
link/unlink calls.
* libfs/src/dosfs/msdos_dir.c, libfs/src/dosfs/msdos_format.c,
libfs/src/dosfs/msdos_misc.c, httpd/asp.c,
libfs/src/nfsclient/src/nfs.c: Work around a newlib warning when
using the is*() family of calls.
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* libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_creat.c,
libfs/src/imfs/imfs_initsupp.c, libfs/src/imfs/imfs_link.c,
libfs/src/imfs/imfs_load_tar.c, libfs/src/imfs/imfs_mknod.c,
libfs/src/imfs/imfs_symlink.c: Create special helper method for
creating the j-node for the root directory. This lets us assume that
every j-node created otherwise has a parent node.
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* libblock/src/bdbuf.c: Update comments.
* libblock/src/bdpart.c, libblock/src/ide_part_table.c: Get the
device from the rdev field of the stat buf.
* libcsupport/include/rtems/libio.h: Add a path length to evalpath
handler. Add parent locations to rmmod and unlink handlers.
* libcsupport/include/rtems/libio_.h: Add a path length to
rtems_filesystem_evaluate_path. Add
rtems_filesystem_evaluate_relative_path, rtems_filesystem_dirname,
and rtems_filesystem_prefix_separators. Remove
rtems_filesystem_evaluate_parent.
* libcsupport/src/base_fs.c, libcsupport/src/chdir.c,
libcsupport/src/chmod.c, libcsupport/src/chown.c,
libcsupport/src/chroot.c, libcsupport/src/fchdir.c,
libcsupport/src/link.c, libcsupport/src/mount.c,
libcsupport/src/open.c, libcsupport/src/privateenv.c,
libcsupport/src/readlink.c, libcsupport/src/unmount.c,
libcsupport/src/utime.c, libcsupport/src/unmount.c,
libcsupport/src/utime.c, libfs/src/devfs/devfs.h,
libfs/src/devfs/devfs_eval.c, libfs/src/devfs/devstat.c,
libfs/src/dosfs/msdos_create.c, libfs/src/dosfs/msdos_misc.c,
libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_eval.c,
libfs/src/imfs/imfs_load_tar.c, libfs/src/imfs/ioman.c,
libfs/src/pipe/pipe.c, libmisc/fsmount/fsmount.c,
libnetworking/lib/ftpfs.c: Add the length parameter to the eval
call.
* libcsupport/src/eval.c: Add rtems_filesystem_prefix_separators,
rtems_filesystem_dirname,
rtems_filesystem_evaluate_relative_path. Add the length parameter
to the eval call.
* libcsupport/src/rmdir.c: Find the parent pathloc then the node
pathloc from that node. Remove the call to find the parent given
the node pathloc.
* libcsupport/src/stat.c: Add the length parameter to the eval
call. Set the device into the rdev field.
* libcsupport/src/unlink.c: Find the parent pathloc then the node
pathloc from that node. Remove the call to find the parent given
the node pathloc.
* libfs/src/dosfs/fat.c, libfs/src/dosfs/msdos_format.c: Get the
disk device number from the stat rdev field.
* libfs/src/dosfs/msdos.h: Add the length parameter to the eval
call. Add the parent pathloc to the rmnod handler.
* libfs/src/dosfs/msdos_dir.c: Add the parent pathloc to the rmnod
handler.
* libfs/src/dosfs/msdos_eval.c: Add the length parameter to the
eval and token call.
* libfs/src/imfs/imfs_directory.c: Add the parent pathloc to the
rmnod handler.
* libfs/src/imfs/imfs_fchmod.c: Do not test the mode flags for
only the allowed flags. Add the missing flags spec'ed in the POSIX
standard.
* libfs/src/imfs/imfs_fsunmount.c, libfs/src/imfs/imfs_rmnod.c,
libfs/src/imfs/imfs_unlink.c, libfs/src/imfs/memfile.c: Add the
parent node. Currently ignored in the IMFS.
* libfs/src/imfs/imfs_stat.c: Return the device number in the rdev
field.
* libfs/src/imfs/imfs_mknod.c, libfs/src/imfs/imfs_symlink.c : Add
the length parameter to the token call.
* libfs/src/nfsclient/src/nfs.c: Add the length parameter to the
eval call and parent node to the rmnod and unlink command.
* libmisc/shell/internal.h: Remove the libc mounter decl to make
public.
* libmisc/shell/main_mount.c: Add support for hooking external
mount support for new file systems.
* libmisc/shell/shell.h: Add helper functions for the mount
command.
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* libcsupport/include/rtems/libio.h: Add rtems_off64_t for
internal use. Update the internal off_t to the 64bit offset.
* libnetworking/lib/ftpfs.c, libnetworking/lib/tftpDriver.c,
libfs/src/nfsclient/src/nfs.c, libfs/src/imfs/imfs_fifo.c,
libfs/src/imfs/memfile.c, libfs/src/imfs/imfs_directory.c,
libfs/src/imfs/imfs.h, libfs/src/imfs/deviceio.c: Change off_t to
rtems_off64_t.
* libmisc/shell/main_msdosfmt.c: Add an info level so the format
code can tell the user what is happening. Add more options to
control the format configuration.
* libfs/src/dosfs/msdos_format.c: Add a print function to display
the format progress and print statements. Select a better default
cluster size depending on the size of the disk. This lowers the
size of the FAT on large disks. Read and maintain the MRB
partition information.
* libfs/src/dosfs/dosfs.h, libfs/src/dosfs/fat.h,
libfs/src/dosfs/fat_file.c, libfs/src/dosfs/fat_file.h,
libfs/src/dosfs/msdos.h, libfs/src/dosfs/msdos_conv.c,
libfs/src/dosfs/msdos_create.c, libfs/src/dosfs/msdos_file.c,
libfs/src/dosfs/msdos_handlers_dir.c,
libfs/src/dosfs/msdos_handlers_file.c,
libfs/src/dosfs/msdos_init.c, libfs/src/dosfs/msdos_initsupp.c,
libfs/src/dosfs/msdos_misc.c, libfs/src/dosfs/msdos_mknod.c: Add
long file name support. Change off_t to rtems_off64_t.
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PR 1376/filesystem
* libcsupport/include/rtems/libio.h, libfs/src/dosfs/fat_file.c,
libfs/src/dosfs/msdos.h, libfs/src/dosfs/msdos_dir.c,
libfs/src/dosfs/msdos_file.c, libfs/src/imfs/deviceio.c,
libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_directory.c,
libfs/src/imfs/imfs_fifo.c, libfs/src/imfs/memfile.c,
libfs/src/nfsclient/src/nfs.c: lseek handlers should return off_t.
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* Makefile.am, preinstall.am, libcsupport/src/mknod.c,
libcsupport/src/open.c, libcsupport/src/pipe.c, libfs/Makefile.am,
libfs/preinstall.am, libfs/src/imfs/imfs.h,
libfs/src/imfs/imfs_creat.c, libfs/src/imfs/imfs_debug.c,
libfs/src/imfs/imfs_eval.c, libfs/src/imfs/imfs_initsupp.c,
libfs/src/imfs/imfs_mknod.c, libfs/src/imfs/imfs_stat.c,
libfs/src/imfs/memfile.c: Initial commit of POSIX pipe support.
* libfs/src/imfs/imfs_fifo.c, libfs/src/pipe/fifo.c,
libfs/src/pipe/pipe.c, libfs/src/pipe/pipe.h: New files.
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* cpukit/libcsupport/include/chain.h: Removed. Use the SAPI
interface that is supported.
* cpukit/libcsupport/Makefile.am,
cpukit/libcsupport/preinstall.am: Remove chain.h header
references.
* cpukit/sapi/include/rtems/chain.h,
cpukit/sapi/inline/rtems/chain.inl: New. A supported chains
interface.
* cpukit/sapi/Makefile.am, cpukit/sapi/preinstall.am: Updated to
include the new chains interface.
* cpukit/libfs/src/imfs/imfs.h,
cpukit/libfs/src/imfs/imfs_creat.c,
cpukit/libfs/src/imfs/imfs_debug.c,
cpukit/libfs/src/imfs/imfs_directory.c,
cpukit/libfs/src/imfs/imfs_fsunmount.c,
cpukit/libfs/src/imfs/imfs_getchild.c,
cpukit/libfs/src/imfs/imfs_load_tar.c,
cpukit/libfs/src/imfs/imfs_rmnod.c,
cpukit/libfs/src/imfs/memfile.c,
cpukit/libfs/src/nfsclient/src/nfs.c,
cpukit/libcsupport/include/rtems/libio.h,
cpukit/libcsupport/src/malloc_deferred.c,
cpukit/libcsupport/src/mount.c,
cpukit/libcsupport/src/privateenv.c,
cpukit/libcsupport/src/unmount.c: Change to the new chains
interface.
* cpukit/libcsupport/src/malloc_boundary.c: Remove warning.
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reduce size of data area.
IMFS: Fixed creation of symbolic links to avoid a compiler warning.
DOSFS: Use LibBlock instead of read() to read the boot record.
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* libfs/src/imfs/imfs.h: Fix comment.
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* libfs/src/imfs/imfs.h: Remove
increment_and_check_linkcounts (unused),
decrement_linkcounts (unused, broken).
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