Previously EBAD (invalid exchange), mapping the error CORRUPT to EILSEQ
(illegal byte sequence) makes more sense as a description of the type of
error.
Fixing a bug. .mbed is ignored in the high level .gitignore file. But .mbed is actually a needed file inside of tools/export. Even though the file is still in the main repo, since it's ignored now, you can easily lose it or remove it without seeing the change. Adding this .gitignore file here will add .mbed back into the tracked files for only this directory
Add the allocate_key API. This replaces the previously added set_alloc_key API
(which allocates a key and sets the value at the same time).
Reason for the change: Key allocation will typically be used by other storage
features (like StorageLite), keeping the allocated keys in another location.
Previous API created problems in the case key allocation and value setting
couldn't be done at the same time (for instance, if the set value was
derived from the allocated key, such as hash or CMAC).
Right now, many users are trying out many different filesystems.
Unfortunately, this can leave partially written filesystems on disk
in various states.
A very common pattern for using embedded filesystems is to attempt
a mount, and on failure, format the storage with the filesystem.
Unfortunately, this simply doesn't work if you try to change the
filesystem being used on a piece of storage. Filesystems don't always
use the same regions of storage, and can leave enough metadata lying
around from old filesystems to trick a different mount into thinking a
valid filesystem exists on disk. The filesystems we have were never
designed to check for malicious modification and can't protect against
arbitrary changes.
That being said, it's caused enough problems for users, so as a
workaround this patch adds a disk erase to the FAT filesystem format.
The most common error happens when you use LittleFS, followed by FAT,
followed again by LittleFS.
No other combination of filesystem usage has shown a similar failure,
but it is possible after extensive filesystem use, so it is still
suggested to force a format of the storage when changing filesystems.
Add the OsEventObserver mechanism. A client interested in receiving
notifications on certain OS events can register to receive notifications
with osRegisterForOsEvents. This is useful for clients like the secure
memory allocator, which observes thread switching events in order to
swap in and out different memory allocator objects.
OsEventObserver objects expect a context to be maintained per thread on
their behalf. Add this context to the thread control block and extend
the thread creation functions with the ability to supply a context.
uVisor doesn't set the PSP of the target thread. The RTOS sets the PSP
of the target thread from the target thread's TCB. However, when
interrupts of higher priority than PendSV happen between the call to
uVisor to switch boxes, and the RTOS setting PSP, the uVisor vIRQ
interrupt handler will attempt to use an invalid PSP (the PSP from
before the box and thread switch). This leads to a crash. Make box and
thread switching atomic by disabling interrupts immediately before the
box switching until immediately after the new PSP is set.
CMSIS repo does not support pre-processor defines, hence multiple assembly
files are added for secure/non-secure and floating point tools.
Mbed OS tools support assembly file pre-processing, but the build system
does not support multiple assembly files for each target, hence updating
the assembly files.
mbed OS used older RTX4 version and with osThreadDef accepting only 3
parameters, to preserve compatibility we hardcode the 'instances'
parameter to 1.
(cherry picked from commit 428acae1b2ac15c3ad523e8d40755a9301220822)
paul-szczepanek-arm
Yossi Levy
Cruz Monrreal
Christopher Haster
Alex-EEE
David Saada
Ron Eldor
Juhani Puurula
Donatien Garnier
Bartek Szatkowski
Jaeden Amero
deepikabhavnani