forked from Imagelibrary/rtems
c2287ba2cf
There was a race conditon in the reference counting of file descriptors during a close() operation. After the call to the close handler, the rtems_libio_free() function cleared the flags to zero. However, at this point in time there may still exist some holders of the file descriptor. With RTEMS_DEBUG enabled this could lead to failed assertions in rtems_libio_iop_drop(). Change the code to use only atomic read-modify-write operations on the rtems_libio_iop::flags.
This is a snapshot of my attempt to fit the FreeBSD networking code into RTEMS. Things seem to be working! Things that need to be done: 1) More documentation! 2) Figure out what's still not working :-) 3) Rationalize the include files. Right now I have a special hack in the Makefile to ensure that I pick up the FreeBSD versions of the include files that are duplicated between RTEMS and FreeBSD. The network device driver source should move to the BSP source tree. 4) Have a look at all the FIXME comments. 5) Go through and make sure that all the source files are free of undesired copyright restrictions. Initial Changes =============== 19-AUG-1998 snapshot - Pulled BOOTP initialization out of rtems_glue. Applications which don't used BOOTP are now about 5k smaller. - Loopback interface is not installed by default, rather it is attached like any other interface. Saves about 0.5 kbytes. - Add rtems_bsdnet_show_if_stats(); - Moved test programs from below freebsd directory. 18-AUG-1998 snapshot - Removed some include files that were already part of RTEMS. - Cleaned up machine/types.h to prepare for inclusion in RTEMS source. - Added syslog library routines -- much simpler than KA9Q version. Sockets can be shared among tasks (as long as the send is protected by a mutex) so there's no need for a Syslog Daemon. 16-AUG-1998 snapshot - Table-driven configuration (networkconfig.h). - Cleaned up rtems_bsdnet.h. - BOOTP now retries properly -- Note to Joel: The dichotomy between RTEMS and UNIX error codes is a real pain! 14-AUG-1998 snapshot - Added dummy getprotobyname() and getprotobynum() functions. - Added socket ioctl. - Added application-level entry to manipulate routing tables. - Added non-BOOTP network initialization. 13-AUG-1998 snapshot - Changed some BOOTP addresses from sockaddr_in to inaddr; - Get DNS information from BOOTP reply. - Got DNS lookups working. Bloatware comes to RTEMS -- invoking gethostbyname() drags in and extra 40 kbytes of code! - Added hostname lookup program. 12-AUG-1998 snapshot - Added startup delay to network initialization. - More statistic-printing routines. - Added TFTP driver and test program - Modified TFTP test program to use networkconfig.h. - Removed unused include files. - Added from ftp://ftp.ca.FreeBSD.ORG/pub/FreeBSD/FreeBSD-current/src/lib/libc/net. 11-AUG-1998 snapshot. - Added getpeername() - Added M68k versions of IP checksum code - Added TCP timing program to snapshot. 02-AUG-1998 snapshot.