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18 Commits

Author SHA1 Message Date
ouyangxiangzhen
dd88c7fcfa sys/mman: Add dummy implementations of shm_open and shm_unlink 
This patch added dummy implementations of shm_open and shm_unlink.

Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
 2024-09-13 16:08:25 +08:00
ouyangxiangzhen
0451ead2c5 fs/mmap: Ensure anonymous pages are initialized to zero 
According to the mmap(2) specification, anonymous pages should be initialized to zero unless the MAP_UNINITIALIZED is specified.

Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
 2024-09-13 09:10:21 +08:00
ouyangxiangzhen
53c7612faf fs/mmap: Add MADV_HUGEPAGE definitions 
This commit add MADV_HUGEPAGE and MADV_NOHUGEPAGE definitions for madvise. Notice that none of these flags have been implemented yet.

Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
 2024-09-13 09:10:04 +08:00
Xiang Xiao
92b2f1bd3d fs: Undefine CONFIG_FS_LARGEFILE if compiler doesn't support long long 
to simplify the large file check in many place

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2023-03-02 09:37:58 +01:00
Xiang Xiao
dc2e9b8771 libc: Move memfd related stuff to sys/mman.h 
follow the freebsd definition:
https://github.com/freebsd/freebsd-src/blob/master/sys/sys/mman.h#L207-L228

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2023-02-13 16:00:37 +01:00
Xiang Xiao
125d090b9c fs: Map madvice to posix_madvice 
https://man7.org/linux/man-pages/man2/madvise.2.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2023-01-20 11:38:41 +02:00
Xiang Xiao
319474b1b1 fs: Change off_t and related types to int64_t if long long is supported 
since it is very popular that the storage capcacity is large than 4GB
even in the embedded system:
https://www.opengroup.org/platform/lfs.html
https://en.wikipedia.org/wiki/Large-file_support

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I019dc08aff02f9ea01eb6d750033bbc358994da5
 2021-08-04 06:48:30 -07:00
Gustavo Henrique Nihei
b9f231cdca include: Fix typos reported by codespell 2021-02-25 11:30:38 -08:00
Alin Jerpelea
9b9be7e1f0 include: Author: Gregory Nutt: update licenses to Apache 2.0 
Update files from Gregory Nutt to Apache 2.0 license.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-02-04 03:33:58 -08:00
chao.an
9241725312 fs/munmap: export the symbols to avoid build break on C++ syntax 
base/metrics/persistent_memory_allocator.cc:1009:18: error: expected id-expression before ‘-’ token
 1009 |   int result = ::munmap(memory, size);
      |                  ^~~~~~

Change-Id: I24e55c18d09553d3acc341a27063d01489d905ec
Signed-off-by: chao.an <anchao@xiaomi.com>
 2020-09-18 20:05:10 -07:00
Gregory Nutt
419c4cb6be A little more progress toward the implementation of per-window framebuffers. Still missing: 
- 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.
 2019-03-14 11:20:14 -06:00
Gregory Nutt
28e9fe32b6 include/: Remove dangling space at the end of lines. 2017-06-28 13:30:08 -06:00
Gregory Nutt
19eea866e6 Standardize some header files 2015-02-16 14:29:43 -06:00
Gregory Nutt
b660a708d4 Add shared memory definitions, types, prototypes 2014-09-22 09:29:37 -06:00
patacongo
8e5733ae3f Header file clean-up 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4948 42af7a65-404d-4744-a932-0658087f49c3
 2012-07-17 03:58:11 +00:00
patacongo
36a7f0be04 Complets ram mapping logic 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3578 42af7a65-404d-4744-a932-0658087f49c3
 2011-05-08 14:42:42 +00:00
patacongo
eeec4073a9 Switching to C99 stdint.h types 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2340 42af7a65-404d-4744-a932-0658087f49c3
 2009-12-14 23:32:23 +00:00
patacongo
1427e4083c Add mmap() API 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@916 42af7a65-404d-4744-a932-0658087f49c3
 2008-09-12 15:54:20 +00:00