If MAP_PRIVATE is specified, do not change the underlying object,
that is OK to open file with read-only permission. Change to pass:
testcases/open_posix_testsuite/conformance/interfaces/mmap/6-5.c
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
As posix spec, mmap() function shall fail with ENODEV if fd refers
to a file whose type is not supported. Change to pass ltp open_posix test:
testcases/open_posix_testsuite/conformance/interfaces/mmap/23-1.c
https://pubs.opengroup.org/onlinepubs/9699919799/functions/mmap.html
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
| $ gcc -c "-O3" -Wall -isystem include -D__NuttX__ -D__KERNEL__ -I fs -I sched fs/mmap/fs_mmap.c -o fs_mmap.o
| include/sys/mman.h: In function ‘mmap’:
| fs/mmap/fs_mmap.c:259:13: warning: ‘mapped’ may be used uninitialized in this function [-Wmaybe-uninitialized]
| 259 | FAR void *mapped;
| | ^~~~~~
Signed-off-by: chao an <anchao@xiaomi.com>
and Fix include/nuttx/mm/map.h:55:28: error: 'struct task_group_s' declared inside parameter list will not be visible outside of this definition or declaration
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
- Add mmap into file_operations and remove it from ioctl definitions.
- Add mm_map structure definitions to support future unmapping
- Modify all drivers to initialize the operations struct accordingly
Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
- Logic that generates the low lever framebuffer renderers for the per-window framebuffers,
- The logic that picks off the per-window framebuffer updates from normal graphics device updates. This logic must update both the per-window framebuffer and the graphics device (from the framebuffer).
Squashed commit of the following:
graphics: Add logic to allocate the per-window framebuffer.
graphics: A few fragmentary thoughts on how a per-window framebuffer could be represented and allocated.
