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wasi: Tweak the configuration for nuttx and explain why (#3451)

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YAMAMOTO Takashi 2024-05-21 15:42:30 +09:00 committed by GitHub
parent 5bc38f77f6
commit 403f472ff1
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1 changed files with 11 additions and 3 deletions
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14
core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/ssp_config.h
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@ -26,9 +26,17 @@
// On Linux, prefer to use getrandom, though it isn't available in
// GLIBC before 2.25.
#if (defined(__linux__) || defined(ESP_PLATFORM) || defined(__COSMOPOLITAN__)) \
&& (!defined(__GLIBC__) || __GLIBC__ > 2 \
|| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 25))
//
// NuttX has arc4random_buf, getrandom, and /dev/urandom.
// We prefer getrandom here because it has the best chance to be usable.
// - Our /dev/urandom usage (keep the open descriptor in a global variable)
// is not compatible with NuttX flat memory model.
// - arc4random_buf is only available with CONFIG_CRYPTO_RANDOM_POOL=y.
#if defined(__NuttX__) \
|| ((defined(__linux__) || defined(ESP_PLATFORM) \
|| defined(__COSMOPOLITAN__)) \
&& (!defined(__GLIBC__) || __GLIBC__ > 2 \
|| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 25)))
#define CONFIG_HAS_GETRANDOM 1
#else
#define CONFIG_HAS_GETRANDOM 0