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nuttx/libs/libc/stdio
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hujun5 90387a5b41 libc/misc: add fdsan module 
FD (file descriptor) is widely used in system software development,
and almost all implementations of posix os (including nuttx) use FD as an index.
the value of fd needs to be allocated starting from the minimum available value of 3, and each process has a copy,
so the same fd value is very easy to reuse in the program.

In multi threaded or multi process environments without address isolation,
If the ownership, global variables, and competition relationships of fd are not properly handled,
there may be issues with fd duplication or accidental closure.
Further leading to the following issues, which are difficult to troubleshoot.

1. Security vulnerability: the fd we wrote is not the expected fd and will be accessed by hackers to obtain data
2. Program exceptions or crashes: write or read fd failures, and program logic errors
3. The structured file XML or database is damaged: the data format written to the database is not the expected format.

The implementation principle of fdsan is based on the implementation of Android
https://android.googlesource.com/platform/bionic/+/master/docs/fdsan.md

Signed-off-by: hujun5 <hujun5@xiaomi.com>
2023-05-17 10:24:42 +08:00
..
Kconfig stdio: Remove CONFIG_EOL_IS_XXX 2023-02-24 00:35:19 +08:00
lib_asprintf.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_clearerr.c stdio/lib_clearerr: Did not clear stream buffer flags in clearerr 2021-03-17 03:15:17 -07:00
lib_dprintf.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_dtoa_data.c libs/libc/stdio: replace double_t to double 2020-09-15 14:42:36 +08:00
lib_dtoa_engine.c nuttx: Use MIN/MAX definitions from "sys/param.h" 2023-02-01 23:47:44 +08:00
lib_dtoa_engine.h Remove the unnecessary math.h inclusion 2021-04-12 22:58:23 -04:00
lib_fclose.c libc/misc: add fdsan module 2023-05-17 10:24:42 +08:00
lib_feof.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_ferror.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_fflush.c fs/streams: Move the file streams from the group structure into TLS 2022-12-22 20:16:11 +08:00
lib_fgetc.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_fgetpos.c lib/stdio: Handle 64bits off_t correctly 2021-11-18 10:06:27 -05:00
lib_fgets.c libc/gets: Remove the unnecessary cast 2021-11-27 16:07:39 -03:00
lib_fileno.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_fopen.c libc/misc: add fdsan module 2023-05-17 10:24:42 +08:00
lib_fprintf.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_fputc.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_fputs.c Fix -Werror=nonnull-compare and -Werror=format-truncation= 2022-03-02 15:55:38 +08:00
lib_fread.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_freopen.c freopen: Added flush of the read buffers. 2022-10-18 23:29:55 +08:00
lib_fscanf.c NuttX: Johannes Schock: update licenses to Apache 2021-04-01 12:13:12 -05:00
lib_fseek.c lib/stdio: Handle 64bits off_t correctly 2021-11-18 10:06:27 -05:00
lib_fseeko.c lib/stdio: Handle 64bits off_t correctly 2021-11-18 10:06:27 -05:00
lib_fsetpos.c lib/stdio: Handle 64bits off_t correctly 2021-11-18 10:06:27 -05:00
lib_ftell.c lib/stdio: Handle 64bits off_t correctly 2021-11-18 10:06:27 -05:00
lib_ftello.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_fwrite.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_getc.c libc: Refine the inline handling 2020-07-04 11:10:29 +09:00
lib_getchar.c libc: Make perror/putchar/getchar/puts work without CONFIG_FILE_STREAM 2021-11-18 06:29:09 -08:00
lib_getdelim.c stdio: Remove CONFIG_EOL_IS_XXX 2023-02-24 00:35:19 +08:00
lib_gets_s.c libc/stdio: Make gets/gets_s work without CONFIG_FILE_STREAM 2023-02-24 10:39:48 +08:00
lib_gets.c libc/stdio: Make gets/gets_s work without CONFIG_FILE_STREAM 2023-02-24 10:39:48 +08:00
lib_libdgets.c libc/stdio: Make gets/gets_s work without CONFIG_FILE_STREAM 2023-02-24 10:39:48 +08:00
lib_libdtoa.c nuttx: Use MIN/MAX definitions from "sys/param.h" 2023-02-01 23:47:44 +08:00
lib_libfflush.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_libfgets.c stdio: lib_fgets convert \r\n to \n 2023-02-24 10:39:48 +08:00
lib_libfilelock.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_libflushall.c libc/stdio: Remove the one line mutex wrapper 2022-11-09 21:38:10 +01:00
lib_libfread.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_libfwrite.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_libgetstreams.c libc/stdio: Implement lib_get_stream 2023-03-02 09:56:57 +01:00
lib_libsprintf.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_libstream.c fs/streams: Move the file streams from the group structure into TLS 2022-12-22 20:16:11 +08:00
lib_libvscanf.c libc/stream: Rename [lib_stream_](put|get) to [lib_stream_](putc|getc) 2022-12-05 14:27:55 +01:00
lib_libvsprintf.c libc/libvsprintf: use puts to replace the putc 2023-03-08 16:56:17 +08:00
lib_perror.c libc: Make perror/putchar/getchar/puts work without CONFIG_FILE_STREAM 2021-11-18 06:29:09 -08:00
lib_printf.c libc/stdio: Allocate file_struct dynamically 2020-09-11 17:58:17 +08:00
lib_putc.c libc: Refine the inline handling 2020-07-04 11:10:29 +09:00
lib_putchar.c libc: Make perror/putchar/getchar/puts work without CONFIG_FILE_STREAM 2021-11-18 06:29:09 -08:00
lib_puts.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_rdflush.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_remove.c libs: Author Sebastien Lorquet: update licenses to Apache 2021-03-20 19:22:58 -07:00
lib_renameat.c libc: Add a new argument(size_t fulllen) to lib_getfullpath 2023-05-08 09:57:01 +02:00
lib_rewind.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_scanf.c NuttX: Johannes Schock: update licenses to Apache 2021-04-01 12:13:12 -05:00
lib_setbuf.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_setbuffer.c libc: Add setbuffer to stdio. 2023-05-01 11:24:41 +03:00
lib_setvbuf.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_snprintf.c libs: nxstyle fixes 2021-03-03 18:52:53 -08:00
lib_sprintf.c libc/stdio: Move source files to the right Makefile section 2021-11-19 08:21:27 -03:00
lib_sscanf.c NuttX: Johannes Schock: update licenses to Apache 2021-04-01 12:13:12 -05:00
lib_tempnam.c Fixes in asprintf usage. 2023-04-19 02:48:39 +08:00
lib_tmpfile.c libc: tmpfile shouldn't hardcode the folder to /tmp 2020-06-03 07:46:02 -06:00
lib_tmpnam.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_ultoa_invert.c Revert "libc/stdio: enable long long formating by CONFIG_HAVE_LONG_LONG" 2022-07-20 18:06:29 +03:00
lib_ultoa_invert.h Revert "libc/stdio: enable long long formating by CONFIG_HAVE_LONG_LONG" 2022-07-20 18:06:29 +03:00
lib_ungetc.c libs/libc/stdio: fix ungetc operation 2022-10-14 23:29:38 +08:00
lib_vasprintf.c asprintf: Fixed possible memory leak if print fails. 2023-03-28 14:46:07 -03:00
lib_vdprintf.c stdio: Implement simple buffered out stream for vdprintf 2023-03-01 13:08:59 +09:00
lib_vfprintf.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_vfscanf.c libc/stdio: Add stdio file locking functions 2022-10-22 23:34:45 +08:00
lib_vprintf.c libc/stdio: Allocate file_struct dynamically 2020-09-11 17:58:17 +08:00
lib_vscanf.c libc: Implement vscanf() function 2020-06-03 07:35:08 -06:00
lib_vsnprintf.c libs: Gregory Nutt: update licenses to Apache 2021-04-02 11:12:25 -05:00
lib_vsprintf.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
lib_vsscanf.c sourcefiles: Fix relative path in file header 2021-03-09 23:18:28 +08:00
lib_wrflush.c libs: Author Gregory Nutt: update licenses to Apache 2021-03-03 18:52:53 -08:00
Make.defs libc: Add setbuffer to stdio. 2023-05-01 11:24:41 +03:00