forked from Imagelibrary/rtems
1a5c324480
In libfdt we often sanity test fdt_totalsize(fdt) fairly early, then trust it (but *only* that header field) for the remainder of our work. However, Coverity gets confused by this - it sees the byteswap in fdt32_ld() and assumes that means it is coming from an untrusted source everytime, resulting in many tainted data warnings. Most of these end up with logic in fdt_get_string() as the unsafe destination for this tainted data, so let's tweak the logic there to make it clearer to Coverity that this is ok. We add a sanity test on fdt_totalsize() to fdt_probe_ro_(). Because the interface allows bare ints to be used for offsets, we already have the assumption that totalsize must be 31-bits or less (2GiB would be a ludicrously large fdt). This makes this more explicit. We also make fdt_probe_ro() return the size for convenience, and change the logic in fdt_get_string() to keep it in a local so that Coverity can see that it has already been bounds-checked. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Real-Time Executive for Multiprocessing Systems (RTEMS)
-------------------------------------------------------
RTEMS, Real-Time Executive for Multiprocessor Systems, is a real-time executive
(kernel) which provides a high performance environment for embedded
applications with the following features:
- standards based user interfaces
- multitasking capabilities
- homogeneous and heterogeneous multiprocessor systems
- event-driven, priority-based, preemptive scheduling
- optional rate monotonic scheduling
- intertask communication and synchronization
- priority inheritance
- responsive interrupt management
- dynamic memory allocation
- high level of user configurability
- open source with a friendly user license
Project git repositories are located at https://git.rtems.org/
RTEMS Kernel: https : https://git.rtems.org/rtems/
RTEMS Source Builder : https://git.rtems.org/rtems-source-builder/
RTEMS Tools : https://git.rtems.org/rtems-tools/
RTEMS Documentation : https://git.rtems.org/rtems-docs/
RTEMS FreeBSD : https://git.rtems.org/rtems-libbsd/
Online documentation is available at https://docs.rtems.org/
RTEMS User Manual : https://docs.rtems.org/branches/master/user/index.html
RTEMS RSB Manual : https://docs.rtems.org/branches/master/rsb/index.html
RTEMS Classic API : https://docs.rtems.org/branches/master/c-user/index.html
RTEMS POSIX API : https://docs.rtems.org/branches/master/posix-users/index.html
RTEMS Doxygen for CPUKit : https://docs.rtems.org/doxygen/branches/master/
RTEMS POSIX 1003.1 Compliance Guide :
https://docs.rtems.org/branches/master/posix-compliance/index.html
- Details the standards base functionality and profiles RTEMS supportsXo
RTEMS Developers Wiki : http://devel.rtems.org
- Bug reporting, community knowledge and tutorials.
RTEMS Mailing Lists : https://lists.rtems.org/mailman/listinfo
- The RTEMS Project maintains mailing lists which are used for most
discussions:
* For general-purpose questions related to using RTEMS, use the rtems-users
ml: https://lists.rtems.org/mailman/listinfo/users
* For questions and discussion related to development of RTEMS, use the
rtems-devel ml: https://lists.rtems.org/mailman/listinfo/devel
The version number for this software is indicated in the VERSION file.