> After removing the (socklen_t*) typecast... > # pcc -o reveal -D_POSIX_SOURCE -D_BSD_EXTENSION reveal.c -lbsd > # ./reveal > ERRNO: 12 > socket accept: Invalid argument
The precise error I get as well. Thank you for confirming. I'd forgotten that one of the reasons for doing this was to add "socklen_t" to the typedefs. Let me add a bit of diagnostic information. The ERRNO 12 is way out, ENOMEM has nothing to do with this. The error seems to stem from two connected problems: the actual site of the error lies with an attempt to open("/net/tcp/27/listen", O_RDWR) when the specific connection has not been announce()d (in Plan 9 terms). The reason for the error is that the code in /sys/src/ape/listen.c:/^listenproc guarded by the for(;;) gets as far as the cfd = open(listen, O_RDWR); but never returns from there, it seems literally to exit() at this point. Once the code exits, I presume it closes the descriptor which causes the later "open" to fail. We know that the parent code closes the actual "socket" (nfd = dup(fd); ... close(nfd);) as well as the unused end of the pipe (close (pfd[1]);) and then returns to the caller and thence to the caller of the listen() procedure. The child process, which ought to supply the name of the network control file (/net/tcp/27/ctl in this case) never gets to the stage where it can put this information in the "listen" file because it can't even open it successfully. There's clearly an error here and the worst symptom I can identify is that the "/net/tcp/27/listen" file cannot be opened and that the failure is both silent and fatal. Here I'm afraid I'm right out of my depths. ++L PS: all disclaimers apply, there are too many nooks and crannies here for me to feel confident that what I'm seeing is in fact what is happening.