Age | Commit message (Collapse) | Author |
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http://www.google-melange.com/gci/task/view/google/gci2012/8017203
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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.
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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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o Removed RTEMS_LIBIO_PERMS_SEARCH.
o Renamed RTEMS_LIBIO_PERMS_READ in RTEMS_FS_PERMS_READ.
o Renamed RTEMS_LIBIO_PERMS_WRITE in RTEMS_FS_PERMS_WRITE.
o Renamed RTEMS_LIBIO_PERMS_EXEC in RTEMS_FS_PERMS_EXEC.
o Renamed RTEMS_LIBIO_FOLLOW_HARD_LINK in RTEMS_FS_FOLLOW_HARD_LINK.
o Renamed RTEMS_LIBIO_FOLLOW_SYM_LINK in RTEMS_FS_FOLLOW_SYM_LINK.
o Renamed RTEMS_LIBIO_MAKE in RTEMS_FS_MAKE.
o Renamed RTEMS_LIBIO_EXCLUSIVE in RTEMS_FS_EXCLUSIVE.
o Renamed RTEMS_LIBIO_ACCEPT_RESIDUAL_DELIMITERS in
RTEMS_FS_ACCEPT_RESIDUAL_DELIMITERS.
o Renamed RTEMS_LIBIO_REJECT_TERMINAL_DOT in
RTEMS_FS_REJECT_TERMINAL_DOT.
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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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* libcsupport/src/mknod.c, libfs/src/rfs/rtems-rfs-inode.c: PR
1749. Fix the incorrect handling of the file type in the mode
value to reject invalid types as per the standard.
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* libcsupport/src/chdir.c, libcsupport/src/chmod.c,
libcsupport/src/chown.c, libcsupport/src/close.c,
libcsupport/src/eval.c, libcsupport/src/fchdir.c,
libcsupport/src/fchmod.c, libcsupport/src/fchown.c,
libcsupport/src/fcntl.c, libcsupport/src/fdatasync.c,
libcsupport/src/freenode.c, libcsupport/src/fstat.c,
libcsupport/src/fsync.c, libcsupport/src/ftruncate.c,
libcsupport/src/ioctl.c, libcsupport/src/link.c,
libcsupport/src/lseek.c, libcsupport/src/mknod.c,
libcsupport/src/mount.c, libcsupport/src/open.c,
libcsupport/src/read.c, libcsupport/src/readlink.c,
libcsupport/src/readv.c, libcsupport/src/rmdir.c,
libcsupport/src/stat.c, libcsupport/src/statvfs.c,
libcsupport/src/symlink.c, libcsupport/src/unlink.c,
libcsupport/src/unmount.c, libcsupport/src/write.c: Removed
filesystem checks for NULL methods checks from the main posix
rountines. These are now required to have at a miminum default
routines in the tables.
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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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* include/chain.h, include/clockdrv.h, include/console.h,
include/iosupp.h, include/rtc.h, include/spurious.h,
include/timerdrv.h, include/vmeintr.h, include/motorola/mc68230.h,
include/rtems/libcsupport.h, include/rtems/libio.h,
include/rtems/libio_.h, include/rtems/termiostypes.h,
include/sys/termios.h, include/zilog/z8036.h, include/zilog/z8530.h,
include/zilog/z8536.h, src/__brk.c, src/__gettod.c, src/__sbrk.c,
src/__times.c, src/access.c, src/base_fs.c, src/cfgetispeed.c,
src/cfgetospeed.c, src/cfsetispeed.c, src/cfsetospeed.c, src/chdir.c,
src/chmod.c, src/chown.c, src/chroot.c, src/close.c, src/ctermid.c,
src/dup.c, src/dup2.c, src/eval.c, src/fchdir.c, src/fchmod.c,
src/fcntl.c, src/fdatasync.c, src/fpathconf.c,
src/fs_null_handlers.c, src/fstat.c, src/fsync.c, src/ftruncate.c,
src/getdents.c, src/getpwent.c, src/hosterr.c, src/ioctl.c,
src/isatty.c, src/libio.c, src/libio_sockets.c, src/link.c,
src/lseek.c, src/lstat.c, src/malloc.c, src/mallocfreespace.c,
src/mkdir.c, src/mkfifo.c, src/mknod.c, src/mount.c, src/newlibc.c,
src/no_libc.c, src/no_posix.c, src/open.c, src/pathconf.c,
src/pipe.c, src/privateenv.c, src/read.c, src/readlink.c,
src/rewinddir.c, src/rmdir.c, src/seekdir.c, src/stat.c,
src/symlink.c, src/sync.c, src/tcdrain.c, src/tcflow.c,
src/tcflush.c, src/tcgetattr.c, src/tcgetprgrp.c, src/tcsendbreak.c,
src/tcsetattr.c, src/tcsetpgrp.c, src/telldir.c, src/termios.c,
src/termiosinitialize.c, src/truncate.c, src/umask.c, src/unixlibc.c,
src/unlink.c, src/unmount.c, src/utime.c, src/write.c: URL for
license changed.
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* src/mount.c per PR290, add check for ops->node_type_h
* src/mknod.c per PR291, remove erroneous call to freenod
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* include/rtems/libio_.h: Remove set_errno_and_return_minus_one.
* libc/cfsetispeed.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/cfsetospeed.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/chdir.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/chmod.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/chown.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/chroot.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/closedir.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/eval.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/fchdir.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/fchmod.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/fdatasync.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/fpathconf.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/fstat.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/fsync.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/ftruncate.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/getdents.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/ioctl.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/link.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/lseek.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/mknod.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/open.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/read.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/readlink.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/rmdir.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/stat.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/symlink.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/tcsetattr.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/telldir.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/ttyname.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/ttyname_r.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/unlink.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/unmount.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/utime.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
* libc/write.c: Include <rtems/seterr.h>.
Apply rtems_set_errno_and_return_minus_one.
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* configure.in: Add libc/config.h
* libc/Makefile.am: Add INCLUDES += -I. to pickup config.h
* libc/.cvsignore: Add config.h and stamp-h
* libc/*.c: Add config.h support.
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* include/Makefile.am, include/rtems/libio_.h, libc/Makefile.am,
libc/assoc.c, libc/assocnamebad.c, libc/base_fs.c, libc/cfsetispeed.c,
libc/cfsetospeed.c, libc/chdir.c, libc/chmod.c, libc/chown.c,
libc/close.c, libc/closedir.c, libc/dup2.c, libc/error.c, libc/eval.c,
libc/fchdir.c, libc/fchmod.c, libc/fcntl.c, libc/fdatasync.c,
libc/fpathconf.c, libc/fstat.c, libc/fsync.c, libc/ftruncate.c,
libc/getdents.c, libc/ioctl.c, libc/libio.c, libc/libio_sockets.c,
libc/link.c, libc/lseek.c, libc/malloc.c, libc/mallocfreespace.c,
libc/mknod.c, libc/mount.c, libc/newlibc.c, libc/no_libc.c,
libc/open.c, libc/read.c, libc/readlink.c, libc/rmdir.c, libc/stat.c,
libc/symlink.c, libc/tcsetattr.c, libc/telldir.c, libc/ttyname.c,
libc/ttyname_r.c, libc/umask.c, libc/unlink.c, libc/unmount.c,
libc/utime.c, libc/write.c:
assoc.h, error.h, libio_.h, libio.h, and libcsupport.h moved
from libc to lib/include/rtems and now must be referenced as
<rtems/XXX.h>.
* include/rtems/Makefile.am, include/rtems/.cvsignore: New file.
* include/rtems/assoc.h, include/rtems/error.h,
include/rtems/libcsupport.h, include/rtems/libio.h,
include/rtems/libio_.h: New/moved files.
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* libc/libio.h (rtems_filesystem_file_handlers_r,
rtems_filesystem_operations_table): Added _h to all structure
fields to indicate they are "handlers".
* libc/libio_.h, libc/chdir.c, libc/chmod.c, libc/chown.c,
libc/close.c, libc/eval.c, libc/fchdir.c, libc/fchmod.c,
libc/fcntl.c, libc/fdatasync.c, libc/fstat.c, libc/fsync.c,
libc/ftruncate.c, libc/getdents.c, libc/imfs_eval.c,
libc/imfs_unlink.c, libc/ioctl.c, libc/ioman.c, libc/link.c,
libc/lseek.c, libc/mknod.c, libc/mount.c, libc/open.c, libc/read.c,
libc/readlink.c, libc/rmdir.c, libc/stat.c, libc/symlink.c,
libc/unlink.c, libc/unmount.c, libc/utime.c, libc/write.c:
Modified to reflect above name change.
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* libc/chmod.c: Return ENOTSUP if filesystem does not have handler.
* libc/eval.c: Ditto.
* libc/fcntl.c: Ditto.
* libc/fsync.c: Ditto.
* libc/ioctl.c: Ditto.
* libc/ioman.c: Ditto.
* libc/link.c: Ditto.
* libc/memfile.c: Ditto.
* libc/mknod.c: Ditto.
* libc/symlink.c: Ditto.
* libc/libio.h(rtems_filesystem_dev_major_t): New macro.
* libc/libio.h(rtems_filesystem_dev_minor_t): New macro.
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places to make sure memory allocated for filesystem specifif nodes
gets freed.
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node used to manage file access.
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indicates an internal error.
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overhaul of the RTEMS system call interface. This base file system is
the "In-Memory File System" aka IMFS.
The design and implementation was done by the following people:
+ Joel Sherrill (joel@OARcorp.com)
+ Jennifer Averett (jennifer@OARcorp.com)
+ Steve "Mr Mount" Salitasc (salitasc@OARcorp.com)
+ Kerwin Wade (wade@OARcorp.com)
PROBLEMS
========
+ It is VERY likely that merging this will break the UNIX port. This
can/will be fixed.
+ There is likely some reentrancy/mutual exclusion needed.
+ Eventually, there should be a "mini-IMFS" description table to
eliminate links, symlinks, etc to save memory. All you need to
have "classic RTEMS" functionality is technically directories
and device IO. All the rest could be left out to save memory.
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