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Author SHA1 Message Date
Abhishek Mishra
4002e6af5f Documentation: describe FS permission interface and mount-crossing
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Document inode_checkperm / inode_checkpathperm, mountpoint traverse vs open
semantics, and the optional mountpt_operations.permission hook in
file_permission.rst.

Signed-off-by: Abhishek Mishra <mishra.abhishek2808@gmail.com>
 2026-08-02 18:48:40 -03:00
hanzhijian
597a533a47 Documentation: add CRC implementation details 
Add a new section under Implementation Details explaining the CRC32
variants available in NuttX, including the difference between the
native crc32() and the new Linux/zlib-compatible crc32_ieee().

Signed-off-by: hanzhijian <hanzhijian@zepp.com>
 2026-07-03 10:18:28 +08:00
Abhishek Mishra
d487c46a29 Documentation/sched: Add POSIX user identity transition docs 
Adds comprehensive documentation for the POSIX three-tier user identity
model (real, effective, saved-set IDs) enabled by CONFIG_SCHED_USER_IDENTITY.

* Updates sched/Kconfig with detailed help text explaining the config.
* Adds user_identity.rst to formally document credential inheritance
  and the privilege transition rules for setuid(), seteuid(), setgid(),
  and setegid().
* Updates tasks_vs_threads.rst to list credentials as a shared task
  group resource.

Signed-off-by: Abhishek Mishra <mishra.abhishek2808@gmail.com>
 2026-06-12 08:13:23 +08:00
Tomasz 'CeDeROM' CEDRO
0cfa6f1b96 doc: Migrating the rest of documentation from cwiki. 
* This completes task list in https://github.com/apache/nuttx/issues/11127.
* This preserves selected content from cwiki and moves it to new docs.
* Most pages are simple copy-paste with a simple RST formatting updates,
  with minor updates.
* Content update / reorganization will follow later on when needed.
* Files added (or updated title from cwiki -> current docs):
  * Documentation/implementation:
    * index.
    * cancellation_points.
    * Asynchronous vs. Synchronous Context Switches -> context_switches.rst.
    * ARMv7-M Hardfaults, SVCALL, and Debuggers -> hardfatuls.rst.
    * chip.h FAQ -> chip_h.rst.
    * Debug Output (SYSLOG) Issues -> syslog.rst.
    * Detaching File Descriptors -> file_descriptors.rst.
    * device_nodes.rst.
    * Dynamic Clocking -> power_management.rst.
    * ENOTTY ioctl() Return Value -> ioctl.rst.
    * memory_configurations.rst.
    * kernel_modules_vs_shared_libraries.rst.
    * NAKing USB OUT/IN Tokens -> usb.rst.
    * naming_arch_mcu_board_interfaces.rst.
    * naming_os_internals.rst.
    * nuttx_tasking.rst.
    * oneshot_timers_and_cpu_load.rst.
    * nuttx_initialization_sequence.rst.
    * short_time_delays.rst.
    * Signal Handler Tour -> signal_handlers.rst.
    * smp.rst.
    * syslog.rst.
    * Task Exit Sequence -> nuttx_tasking.rst.
    * tasks_vs_threads.rst.
    * tls.rst.
    * tickless_os.rst.
    * Why Can't Kernel Threads Have pthreads -> kernel_threads_vs_pthreads.rst.
  * Documentation/components/filesystem:
    * smartfs.rst.

Signed-off-by: Tomasz 'CeDeROM' CEDRO <tomek@cedro.info>
 2026-05-28 09:34:04 +08:00
LuchianMihai
e09c8e510e Documentation/Make: add implementation/make_build_system.rst 
This commit adds initial high level overview of the NuttX
make-based build system.  It documents:
* Tools used during the build process
* Mechanisms set in place during the build process

Signed-off-by: Luchian Mihai <luchiann.mihai@gmail.com>
 2025-11-20 09:39:16 -05:00
raiden00pl
e7c9e46eb2 Documentation: port "Device Drivers vs. Bus Drivers and GPIO Drivers" from wiki 
port page from wiki:
https://cwiki.apache.org/confluence/display/NUTTX/Device+Drivers+vs.+Bus+Drivers+and+GPIO+Drivers
 2024-09-28 19:06:30 +08:00
raiden00pl
45a53f0079 Documentation: migrate pages from wiki 
migrate pages:
https://cwiki.apache.org/confluence/display/NUTTX/Driver+Types
https://cwiki.apache.org/confluence/display/NUTTX/Upper+Half+and+Lower+Half+Drivers

and combine them into one page because they describe a similar topic
 2024-09-28 19:06:30 +08:00
Alan Carvalho de Assis
b733030532 doc: Add NuttX Simulation page from Confluence 2024-09-09 08:40:31 +08:00
raiden00pl
16691f29a9 Documentation: migrate "Bottom-Half Interrupt Handlers" from wiki 
link: https://cwiki.apache.org/confluence/display/NUTTX/Bottom-Half+Interrupt+Handlers

Co-authored-by: hartmannathan <59230071+hartmannathan@users.noreply.github.com>
 2023-11-08 15:54:54 +08:00
raiden00pl
afa9e29272 Documentation: migrate "Effects of Disabling Interrupts or Pre-Emption on Response Latency" from wiki 
link: https://cwiki.apache.org/confluence/display/NUTTX/Effects+of+Disabling+Interrupts+or+Pre-Emption+on+Response+Latency
 2023-11-06 09:03:07 +08:00
raiden00pl
0b17238714 Documentation: migrate "Per-Thread Interrupt Controls" from wiki 
link: https://cwiki.apache.org/confluence/display/NUTTX/Per-Thread+Interrupt+Controls
 2023-11-06 09:03:07 +08:00
raiden00pl
f96064db75 Documentation: migrate "SMP Critical Sections" from wiki 
links: https://cwiki.apache.org/confluence/display/NUTTX/SMP+Critical+Sections
 2023-11-05 12:11:14 +08:00
raiden00pl
3b23a693ac Documentation: migrate "Linux Processes vs NuttX Tasks" from wiki 
link: https://cwiki.apache.org/confluence/display/NUTTX/Linux+Processes+vs+NuttX+Tasks
 2023-11-05 12:11:14 +08:00