canlogserver: fix infinite loops during signal handling#628
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olerem wants to merge 1 commit intolinux-can:masterfrom
Open
canlogserver: fix infinite loops during signal handling#628olerem wants to merge 1 commit intolinux-can:masterfrom
olerem wants to merge 1 commit intolinux-can:masterfrom
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Fix infinite loops that prevent graceful termination when the server receives SIGINT or SIGTERM signals. Without this fix, Ctrl-C and kill commands are ignored, making it impossible to stop the server cleanly. Two scenarios cause the infinite loops: 1) The bind() retry loop: When the port is busy, the loop retries indefinitely without checking the running flag set by the signal handler. 2) The accept() loop: The loop is unconditional, so when accept() is interrupted by a signal and returns EINTR, the loop immediately restarts, ignoring the shutdown request. Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
hartkopp
reviewed
May 6, 2026
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The while() statement checks for running to be 1 so this check seems to be wrong inside the function.
I would suggest some comment here that running might be set to 0 due to an external signal.
hartkopp
reviewed
May 6, 2026
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Btw. thanks for the fix! |
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Fix infinite loops that prevent graceful termination when the server receives SIGINT or SIGTERM signals. Without this fix, Ctrl-C and kill commands are ignored, making it impossible to stop the server cleanly.
Two scenarios cause the infinite loops:
The bind() retry loop: When the port is busy, the loop retries
indefinitely without checking the running flag set by the signal
handler.
The accept() loop: The loop is unconditional, so when accept() is
interrupted by a signal and returns EINTR, the loop immediately
restarts, ignoring the shutdown request.