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netutils/dropbear: drop hardware-RNG-only requirement

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waitpid() is called from dropbear_nsh_waiter()'s own pthread, not the
spawning task's thread. Without SCHED_CHILD_STATUS, nxsched_waitpid()
matches children by the calling *thread's* pid instead of its task
group's pid, so it always misses and returns ECHILD.

ARCH_HAVE_RNG/DEV_RANDOM gate /dev/random, which dropbear never uses -
it only reads /dev/urandom via getrandom() (DEV_URANDOM, still
required).

Signed-off-by: Felipe Moura <moura.fmo@gmail.com>
This commit is contained in:
Felipe Moura 2026-07-09 18:50:37 -03:00
parent 7840ea5bdb
commit e440aeeae8
1 changed files with 2 additions and 2 deletions
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4
netutils/dropbear/Kconfig
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@ -10,17 +10,17 @@ menuconfig NETUTILS_DROPBEAR
depends on !DISABLE_PSEUDOFS_OPERATIONS
depends on !DISABLE_PTHREAD
depends on SCHED_WAITPID
depends on SCHED_HAVE_PARENT
depends on NSH_LIBRARY
depends on FSUTILS_PASSWD
depends on PSEUDOTERM
depends on SERIAL
depends on ARCH_HAVE_RNG
depends on DEV_RANDOM
depends on DEV_URANDOM
depends on LIBC_NETDB
depends on LIBC_GAISTRERROR
select CRYPTO
select CRYPTO_RANDOM_POOL
select SCHED_CHILD_STATUS
---help---
Enable a minimal Dropbear SSH server port for NuttX. This initial
port is based on the ESP-IDF MCU test port and provides a single