e86f6c12a5
The standard popen uses the pipeline internally, so the stream returned by it can only support read-only or write-only. Now this patch is expanded through sockpair, which can support both read and write. Therefore, we can use the stream to read and write access this task (posix_spawn start). Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>