luchianmihai/walnux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
walnux/libs/libc
History
YAMAMOTO Takashi 761ee81956 move readv/writev to the kernel 
currently, nuttx implements readv/writev on the top of read/write.
while it might work for the simplest cases, it's broken by design.
for example, it's impossible to make it work correctly for files
which need to preserve data boundaries without allocating a single
contiguous buffer. (udp socket, some character devices, etc)

this change is a start of the migration to a better design.
that is, implement read/write on the top of readv/writev.

to avoid a single huge change, following things will NOT be done in
this commit:

* fix actual bugs caused by the original readv-based-on-read design.
  (cf. https://github.com/apache/nuttx/pull/12674)

* adapt filesystems/drivers to actually benefit from the new interface.
  (except a few trivial examples)

* eventually retire the old interface.

* retire read/write syscalls. implement them in libc instead.

* pread/pwrite/preadv/pwritev (except the introduction of struct uio,
  which is a preparation to back these variations with the new
  interface.)
2024-10-30 17:07:54 +08:00
..
aio libs/libc: There is no need to use sched_[un]lock 2024-10-12 13:28:23 +08:00
assert libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
audio libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
bin libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
builtin libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
ctype libcxx: fix compile error 2024-10-23 09:42:57 +08:00
dirent cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
dlfcn nuttx/libc:Add _dl_find_object and dl_iterate_phdr function. 2024-10-15 12:35:54 +08:00
errno libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
eventfd libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
fdt libs/libc/fdt/Make.defs: cannot move due to directory not empty bugfix 2024-10-09 15:42:17 +08:00
fixedmath libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
gdbstub gdbstub:fix typo 2024-10-24 08:45:21 +08:00
gnssutils libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
grp libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
hex2bin libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
inttypes libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
kbin libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
libgen libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
locale cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
lzf libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
machine nuttx: Add LIBSUPCXX_TOOLCHAIN to link the prebuilt library provide by toolchain. 2024-10-24 01:38:03 +08:00
misc libs/misc/memoryregion: remove unused memory_region 2024-10-18 21:32:48 +08:00
modlib modlib/modlib_symbols.c: Fix usage of void* arithmetics 2024-10-17 22:54:33 +08:00
net cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
netdb cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
obstack cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
pthread cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
pwd libs/libc/unistd: add getspnam function 2024-10-16 11:15:25 +08:00
queue libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
regex libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
sched libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
search libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
semaphore nuttx/syscall: export nxsem_getprioceiling and nxsem_setprioceiling via syscall 2024-10-12 09:50:54 +08:00
signal cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
spawn cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
stdio Discourage the use of LIBC_PRINT_EXTENSION 2024-10-17 18:08:23 +08:00
stdlib libc: Fix lib_arc4random.c:111:(.text.arc4random_buf+0x26): undefined reference to `clock_systime_ticks' 2024-10-28 09:23:19 +01:00
stream driver/serial: remove return value of up_putc() 2024-10-26 13:21:29 +08:00
string Revert "libc/lib_bzero:Add bzero prototype." 2024-10-23 10:08:23 +08:00
symtab lib_libvsprintf.c:add option in Kconfig to control "%p*" special format specifier. 2024-10-15 15:33:13 +08:00
syslog syslog: support syslog redirection to sched_note 2024-10-11 01:30:11 +08:00
termios libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
time strptime.c：len is not defined. 2024-10-16 17:02:51 +08:00
tls libc: Add debug assert to prevent tls allocation failure 2024-10-18 21:34:18 +08:00
uio move readv/writev to the kernel 2024-10-30 17:07:54 +08:00
unistd libc: Refine the arc4random_buf implementation 2024-10-26 18:04:21 -03:00
userfs libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
uuid libc: Refine the arc4random_buf implementation 2024-10-26 18:04:21 -03:00
wchar libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
wctype libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
wqueue cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
zoneinfo libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
.gitignore libfdt: modify makefile 2023-08-26 17:07:02 +08:00
CMakeLists.txt libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
Kconfig nuttx/uorb: Rename GPS to GNSS 2024-09-19 03:44:49 +08:00
libc.csv libc: Refine the arc4random_buf implementation 2024-10-26 18:04:21 -03:00
libc.h libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
Makefile libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00