Commit Graph

40 Commits

Author SHA1 Message Date
Michal Lenc
65ae8a545c libc: add support for memory buffer stream with fmemopen()
Add support for POSIX interface fmemopen(). This interface open a memory
buffer as a stream and permits access to this buffer specified by mode.
This allows I/O operations to be performed on the memory buffer.

The implementation uses fopencookie() for custom stream operations and
callbacks.

Signed-off-by: Michal Lenc <michallenc@seznam.cz>
2023-10-27 08:55:24 +08:00
Michal Lenc
0a107ca6d9 libc: add support for custom streams with fopencookie()
This commit adds support for custom stream via fopencookie function.
The function allows the programmer the create his own custom stream
for IO operations and hook his custom functions to it.

This is a non POSIX interface defined in Standard C library and implemented
according to it. The only difference is in usage of off_t instead of
off64_t. Programmer can use 64 bits offset if CONFIG_FS_LARGEFILE is
enabled. In that case off_t is defined as int64_t (int32_t otherwise).

Field fs_fd is removed from file_struct and fs_cookie is used instead
as a shared variable for file descriptor or user defined cookie.

The interface will be useful for future fmemopen implementation.

Signed-off-by: Michal Lenc <michallenc@seznam.cz>
2023-10-18 21:13:01 +08:00
Xiang Xiao
b0d197534f stdio: Move lib_stream_[initialize|release] from libc/stdio to sched/tls
both functions aren't suitable to be put into libc,
because they call the kernel internal functions directly.

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-10-17 13:34:00 +08:00
guoshichao
5bd8e56cbe libs/libc/wchar: add fputws implementation
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
2023-09-22 08:51:07 +08:00
guoshichao
d67090c47e libs/libc/wchar: add putwc implementation
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
2023-09-22 08:51:07 +08:00
guoshichao
a9b2857754 libs/libc/wchar: add putwchar implementation
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
2023-09-22 08:51:07 +08:00
guoshichao
f8b5f613e2 libs/libc/wchar: add fputwc implementation
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
2023-09-22 08:51:07 +08:00
dongjiuzhu1
df98320c2c libs/libc: support unlock version for fread/fwrite/fputc/fgetc/...
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
2023-09-06 15:08:24 +03:00
dongjiuzhu1
e8842f59da libs/libc: remove unnecessary flockfile to improve performance
modify lib_wrflush/lib_rdflush/lib_ffulsh to unlocked version

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
2023-09-06 15:08:24 +03:00
Stuart Ianna
4e2a8d4492 libc: Add setbuffer to stdio.
The setbuffer() function is a wrapper around setvbuf() which
enables full buffering on a buffer allocated by the caller, assuming
buffer is not a null pointer.
2023-05-01 11:24:41 +03:00
Xiang Xiao
cd74a1df22 libc/stdio: Make gets/gets_s work without CONFIG_FILE_STREAM
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-02-24 10:39:48 +08:00
dongjiuzhu1
14f8a6c2dd fs: support openat/fchmodat/mkfifoat/fstatat/...at api
Refs to:
https://linux.die.net/man/2/openat

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
2023-02-07 03:45:38 +08:00
Ville Juven
2ed51d026c fs/streams: Move the file streams from the group structure into TLS
This is preparation for flushing streams from user space, like it should
be done.

- Move tg_streamlist (group, kernel space) ->
       ta_streamlist (TLS, user space)
- Access stream list via tg_info in kernel
- Access stream list via TLS in user space
- Remove / rename nxsched_get_streams -> lib_getstreams
- Remove system call for nxsched_get_streams
2022-12-22 20:16:11 +08:00
Miguel Herranz
819ebe7356 libc/stdio: Add stdio file locking functions
Add flockfile(), ftrylockfile() and funlockfile() functions [1].

[1] POSIX.1-2008 / System Interfaces / flockfile
    https://pubs.opengroup.org/onlinepubs/9699919799.2008edition/functions/flockfile.html

Signed-off-by: Miguel Herranz <miguel@midokura.com>
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-10-22 23:34:45 +08:00
Xiang Xiao
b869c1ce0e libc: Move stream implementation from libs/libc/stdio to libs/libc/stream
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-12-14 00:51:59 -06:00
Xiang Xiao
55311ea3df libc/stdio: Move source files to the right Makefile section
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-11-19 08:21:27 -03:00
Xiang Xiao
bd2327cc2d libc: Make perror/putchar/getchar/puts work without CONFIG_FILE_STREAM
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-11-18 06:29:09 -08:00
Xiang Xiao
aa9c17e93d libc: Move lib_filesem.c and lib_stream.c to libc/stdio
since it make more sense to put all FILE functions in one place

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-11-02 09:00:11 +01:00
Xiang Xiao
d242861c44 libc: Remove the legacy printf support
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-08-25 12:55:36 -07:00
ligd
b69c587dc9 stdio: remove depends on setbuf setvbuf
N/A

Cause the function realize will handle this

Change-Id: I154c21c7a40667afae423bb0ebb67de8f5fc42fd
Signed-off-by: ligd <liguiding1@xiaomi.com>
2020-10-26 22:12:02 -07:00
Xiang Xiao
b0797263ca libc/stdio: Allocate file_struct dynamically
1.Reduce the default size of task_group_s(~512B each task)
2.Scale better between simple and complex application

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ia872137504fddcf64d89c48d6f0593d76d582710
2020-09-11 17:58:17 +08:00
Xiang Xiao
60fe0a0f96 libc: Refine the inline handling
1.Remove CONFIG_HAVE_INLINE macro
2.Change the ANSI C function to normal function
3.Other simple non ANSI function to macro

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-07-04 11:10:29 +09:00
Xiang Xiao
676a2b77f8 stdio.h: Implement fseeko and ftello function
specified here:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/fseek.html
https://pubs.opengroup.org/onlinepubs/9699919799/functions/ftell.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-06-29 14:26:19 +09:00
YAMAMOTO Takashi
ef5d204fd2 rewind: clear the error indicator
Make rewind() clear the error indicator of the stream
as it's specified by the standards.
2020-06-24 16:56:44 +08:00
Xiang Xiao
a55f8d24a2 libc: Implement vscanf() function
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I2421e57b2c848c43afb749b8ebfa79ec457cde26
2020-06-03 07:35:08 -06:00
Xiang Xiao
9ff32427bf libc: Implement tmpfile() function
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I00bdb42006b40bf1b9bc0bb6865b9b88b4acbb7b
2020-06-02 09:32:25 -06:00
Gregory Nutt
382513e997 libs/libc: Remove support for CONFIG_FS_WRITABLE
The mktemp family of functions are built unconditionally now (but not necessarily included in any  build).
2020-03-22 08:24:07 -05:00
Gregory Nutt
0820af5f8d libs/libc/stdio/lib_getdelim.c: Add implementations of the POSIX functions getdelim() and getline(). 2019-11-12 18:58:50 -06:00
Gregory Nutt
a971171695 libs/libc/stdio/Make.defs: Make that else, not #else. 2019-02-17 16:07:54 -06:00
Gregory Nutt
3ff42a846e libs/libc/stdio: Rename all nano_*.c and nano_*.h files to lib_*.c and lib_*.h to emphasize that these are now the defaults, not an optional implementation. 2019-02-17 12:29:50 -06:00
Gregory Nutt
f12eda8a05 libs/libc/stdio: Rename lib_dtoa.c to legacy_dtoa.c; rename lib_libvsprint.c to legacy_libvsprintf.c 2019-02-17 12:29:35 -06:00
Gregory Nutt
76a2f6c2a2 libs/libc/stdio: This commits makes the nano-printf the defualt logic for the printf family. The legacy printf is still available via CONFIG_LIBC_PRINT_LEGACY. This commit also modifies the nano-prinf configure: The PRINT_LEVEL is not long selectable. Instead, a not CONFIG_LIBC_PRINT_MINIMAL boolean setting was added and the PRINT_LEVEL is derived from a combination of CONFIG_LIBC_PRINT_MINIMAL, CONFIG_LIBC_FLOATINGPOINT, and CONFIG_LIBC_LONG_LONG. 2019-02-17 12:29:20 -06:00
Gregory Nutt
653ff2c34e Restore lib_sprintf(). It was removed because I thought was not used. But I was wrong; there is logic in drivers/syslog that depends on lib_sprintf().
This commits reverts a part of commit c271151d57.  That commit also removed lib_sscanf() which really is not needed.
2019-02-16 12:29:00 -06:00
Johannes
739561ab34 libs/libc/stdio/Make.defs: lib_dtoa.c is only used in the LIBC_CONFIG_NANO_PRINTF=n case. 2019-02-16 09:45:13 -06:00
Gregory Nutt
c271151d57 libs/libc/stdio: Remove unused, non-standard functions lib_sscanf() and lib_sprintf(). 2019-02-15 18:01:39 -06:00
Gregory Nutt
928108036c libs/libc/stdio: In the recent changes we lost the implementation of vsscanf(). This commit restores vsscanf(). sscanf() is not just a front end for vsscanf(). 2019-02-15 17:31:58 -06:00
Johannes
350295d009 Squashed commit of the following:
Author: Gregory Nutt <gnutt@nuttx.org>

    TODO:  Remove 'Missing fscanf()' bug
    Clean up remaining complaints for tools/nxstyle
    Apply tools/detab, rmcr, convert-comments, lowhex, and indent.sh to the new and highly modified files.

Author: Johannes <nivus.entwicklung@gmail.com>

    - Move vscanf logic to lib_sscanf.c  Switched to stream interface (tricky, because the old implementation used massive read ahead, which isn't suitable for streams, chars already read are gone).
    - Added scanf and fscanf
    - Added hh, h, and ll modifiers
    - Fixes for standard compliance in scanf
    - Fixes for standard compliance in strto... function family (don't consume single '-' or '+', allow sign in strotul(l))
2019-02-14 07:03:02 -06:00
Gregory Nutt
a64869aa67 CONFIG_NFILE_DESCRIPTORS=0 can no longer be used to disable the file system. NuttX with no file system does not make sense.
Squashed commit of the following:

    configs/:  The few configurations that formerly set CONFIG_NFILE_DESCRIPTORS=0 should not default, rather they should set the number of descriptors to 3.
    fs/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    tools/:  Tools updates for changes to usage of CONFIG_NFILE_DESCRIPTORS.
    syscall/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    libs/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    include/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    drivers/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    Documentation/:  Remove all references to CONFIG_NFILE_DESCRIPTORS == 0
    binfmt/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    arch/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    net/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    sched/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    sched/Kconfig:  CONFIG_NFILE_DESCRIPTORS may no longer to set to a value less than 3
    configs/:  Remove all settings for CONFIG_NFILE_DESCRIPTORS < 3
2019-02-11 12:09:26 -06:00
Keith Packard
e05149b745 libs/libc/stdio: Add newlib-nano fprintf as an option. This fprintf code was originally adapted from AVR libc and provides improved floating point output support, including 'g' mode and making 'f' mode include digits past the decimal by default. However, this version does not have any long long support. On a demonstration cortex M4 build, this version saves about 5kB of ROM. The newlib version can be found here: https://salsa.debian.org/electronics-team/toolchains/newlib-nano . That project is GPL overall, but the newlib-nano printf portions are BSD licensed as described in the COPYING.NEWLIB file. 2019-02-06 15:50:52 -06:00
Gregory Nutt
cf99fb40c9 This commit moves all of the libraries under a common directory called libs/. This most certainly break libcxx and uClibc++ for now.
Squashed commit of the following:

    libs/libxx:  Fix some confusing in naming.  If the directory is called libxx, then the library must be libxx.a (unless perhaps LIBCXX is selected).
    libs/:  Fix paths in moved library directories.
    libs:  Brute force move of libc, libnx, and libxx to libs.  Cannot yet build it in that configuration.
2018-05-29 13:21:26 -06:00