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* pinfo.cc (_pinfo::dup_proc_pipe): Can't close proc pipe when execing or we 

will suffer an exit code race.
This commit is contained in:
Christopher Faylor 2005-01-04 14:57:42 +00:00
parent dbdbed283b
commit abb13199ba
2 changed files with 12 additions and 2 deletions
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5
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,8 @@
2005-01-03 Christopher Faylor <cgf@timesys.com>
* pinfo.cc (_pinfo::dup_proc_pipe): Can't close proc pipe when execing
or we will suffer an exit code race.
2005-01-03 Corinna Vinschen <corinna@vinschen.de>
* signal.cc (abort): Call _GLOBAL_REENT's __cleanup.

9
winsup/cygwin/pinfo.cc
View File

@ -764,9 +764,14 @@ proc_waiter (void *arg)
bool
_pinfo::dup_proc_pipe (HANDLE hProcess)
{
DWORD flags = DUPLICATE_SAME_ACCESS;
/* Grr. Can't set DUPLICATE_CLOSE_SOURCE for exec case because we could be
execing a non-cygwin process and we need to set the exit value before the
parent sees it. */
if (this != myself)
flags |= DUPLICATE_CLOSE_SOURCE;
bool res = DuplicateHandle (hMainProc, wr_proc_pipe, hProcess, &wr_proc_pipe,
0, FALSE,
DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE);
0, FALSE, flags);
if (!res)
sigproc_printf ("DuplicateHandle failed, pid %d, hProcess %p, %E", pid, hProcess);
else