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| author | Corinna Vinschen <corinna@vinschen.de> | 2009-11-17 10:43:01 +0000 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2009-11-17 10:43:01 +0000 |
| commit | b14f53a8ec619146e20cae8831dec4a8d9aaf883 (patch) | |
| tree | 029928c686817a409f1665db3eb5a381f411f819 /winsup/cygwin/spawn.cc | |
| parent | 88242190ec6f016a5a7956bd20a844dd38e436e6 (diff) | |
| download | cygnal-b14f53a8ec619146e20cae8831dec4a8d9aaf883.tar.gz cygnal-b14f53a8ec619146e20cae8831dec4a8d9aaf883.tar.bz2 cygnal-b14f53a8ec619146e20cae8831dec4a8d9aaf883.zip | |
Reintegrate socket duplication via WSADuplicateSocket/WSASocket.
* autoload.cc (WSADuplicateSocketW): Define.
(WSASocketW): Define.
* dtable.cc (dtable::release): Call dec_need_fixup_before if necessary.
(dtable::fixup_before_fork): New function.
(dtable::fixup_before_exec): New function.
* dtable.h (class dtable): Add member cnt_need_fixup_before. Add
declarations for above new functions.
(dtable::dec_need_fixup_before): New inline method.
(dtable::inc_need_fixup_before): New inline method.
(dtable::need_fixup_before): New inline method.
* fhandler.h (fhandler_base::fixup_before_fork_exec): New virtual
method.
(fhandler_base::need_fixup_before): New virtual method.
(class fhandler_socket): Add member prot_info_ptr.
(fhandler_socket::init_fixup_before): Declare.
(fhandler_socket::need_fixup_before): New inline method.
(fhandler_socket::fixup_before_fork_exec): Declare.
(fhandler_socket::fixup_after_exec): Declare.
* fhandler_socket.cc (fhandler_socket::fhandler_socket): Initialize
prot_info_ptr to NULL.
(fhandler_socket::~fhandler_socket): Free prot_info_ptr conditionally.
(fhandler_socket::init_fixup_before): New method.
(fhandler_socket::fixup_before_fork_exec): Ditto.
(fhandler_socket::fixup_after_fork): Use WSASocketW to duplicate
socket if necessary.
(fhandler_socket::fixup_after_exec): New method.
(fhandler_socket::dup): Use fixup_before_fork_exec/fixup_after_fork
to duplicate socket if necessary.
* fork.cc (frok::parent): Start child suspended if some fhandler
needs fixup before fork. If so, call dtable::fixup_before_fork after
CreateProcess and resume child.
* net.cc (fdsock): Try to find out if socket needs fixup before and
initialize socket accordingly. Add HUGE comment to explain what happens
and why.
* spawn.cc (spawn_guts): Start child suspended if some fhandler needs
fixup before exec. If so, call dtable::fixup_before_exec after
CreateProcess.
Diffstat (limited to 'winsup/cygwin/spawn.cc')
| -rw-r--r-- | winsup/cygwin/spawn.cc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/winsup/cygwin/spawn.cc b/winsup/cygwin/spawn.cc index b9304ff70..88b9bf21f 100644 --- a/winsup/cygwin/spawn.cc +++ b/winsup/cygwin/spawn.cc @@ -529,7 +529,8 @@ spawn_guts (const char *prog_arg, const char *const *argv, and before copying the datastructures to the child. So we have to start the child in suspend state, unfortunately, to avoid a race condition. */ if (!newargv.win16_exe - && (!ch.iscygwin () || mode != _P_OVERLAY)) + && (!ch.iscygwin () || mode != _P_OVERLAY + || cygheap->fdtab.need_fixup_before ())) c_flags |= CREATE_SUSPENDED; /* When ruid != euid we create the new process under the current original @@ -656,6 +657,11 @@ loop: if (!(c_flags & CREATE_SUSPENDED)) strace.write_childpid (ch, pi.dwProcessId); + /* Fixup the parent data structures if needed and resume the child's + main thread. */ + if (cygheap->fdtab.need_fixup_before ()) + cygheap->fdtab.fixup_before_exec (pi.dwProcessId); + if (mode != _P_OVERLAY) cygpid = cygwin_pid (pi.dwProcessId); else |