async_req_4_2 249 uspace/lib/c/include/async.h extern errno_t async_req_4_2(async_exch_t *, sysarg_t, sysarg_t, sysarg_t, async_req_4_2 249 uspace/lib/posix/include/libc/async.h extern errno_t async_req_4_2(async_exch_t *, sysarg_t, sysarg_t, sysarg_t,HelenOS homepage, sources at GitHub