Ricard Rosson ac73e41fc3 netutils/telnetd: keep the listen socket out of the standard-stream range ... When telnetd_daemon() starts without open standard streams - exactly what happens when nsh_telnetstart() spawns "telnetd &" before the console device exists (e.g. CONFIG_NSH_USBCONSOLE boards, where nsh_initialize() runs before the USB console is connected) - socket() returns a descriptor in the 0..2 range. The accept loop's own "go silent" close(0)..close(2) then destroys the listen socket on the first iteration: every subsequent accept4() fails with EBADF and the daemon serves nothing. Observed on hardware (RP2350, CDC-ACM console + CDC-NCM composite): the daemon task was alive but port 23 refused every connection; the thread list showed it looping on the failed accept. Duplicate the descriptor above the standard-stream range before using it. Assisted-by: Claude Fable 5 <noreply@anthropic.com> Signed-off-by: Ricard Rosson <ricard@groundbits.com>		2026-07-23 19:00:43 +01:00
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CMakeLists.txt	netutils: migrate the license to ASF	2024-12-21 13:53:10 +08:00
Kconfig	netutils: Support telnetd in the kernel mode	2022-11-07 15:24:08 +09:00
Make.defs	netutils: migrate the license to ASF	2024-12-21 13:53:10 +08:00
Makefile	netutils: migrate the license to ASF	2024-12-21 13:53:10 +08:00
telnetd_daemon.c	netutils/telnetd: keep the listen socket out of the standard-stream range	2026-07-23 19:00:43 +01:00