From fa3e0faffcbf07db58c3301737547bef2e084519 Mon Sep 17 00:00:00 2001 From: Xiang Xiao Date: Sun, 19 Feb 2023 10:40:54 +0800 Subject: [PATCH] fs: Map FD_SETSIZE to OPEN_MAX instead hardcoding 256 and change the default value of LIBC_OPEN_MAX to 256. Here has more discussion: https://www.mail-archive.com/dev@nuttx.apache.org/msg09095.html Signed-off-by: Xiang Xiao --- include/sys/select.h | 3 ++- libs/libc/unistd/Kconfig | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/include/sys/select.h b/include/sys/select.h index 956b7d1cdf..01997e9037 100644 --- a/include/sys/select.h +++ b/include/sys/select.h @@ -27,6 +27,7 @@ #include +#include #include #include #include @@ -37,7 +38,7 @@ /* Get the total number of descriptors that we will have to support */ -#define FD_SETSIZE 256 +#define FD_SETSIZE OPEN_MAX /* We will use a 32-bit bitsets to represent the set of descriptors. How * many uint32_t's do we need to span all descriptors? diff --git a/libs/libc/unistd/Kconfig b/libs/libc/unistd/Kconfig index 7cc6bacd23..10f92ae85a 100644 --- a/libs/libc/unistd/Kconfig +++ b/libs/libc/unistd/Kconfig @@ -145,7 +145,7 @@ config LIBC_HOSTNAME config LIBC_OPEN_MAX int "OPEN_MAX for this device" - default 255 + default 256 ---help--- The maximum number of files that a process can have open at any time. Must not be less than _POSIX_OPEN_MAX.