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Fix EAGAIN busy-loop in drain_stdio() #633

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Merged
jnovy merged 1 commit into from
Feb 10, 2026
Merged

Fix EAGAIN busy-loop in drain_stdio() #633

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4 changes: 2 additions & 2 deletions src/ctr_stdio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -130,8 +130,8 @@ static bool read_stdio(int fd, stdpipe_t pipe, gboolean *eof)
return false;
} else if (num_read < 0) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
// Non-blocking mode - no data available, return gracefully
return true;
// Non-blocking mode - no data available, stop draining
return false;
}
/* Ignore EIO if fd is a tty, since this can happen when the tty is closed
while we are reading from it. */
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