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* dtable.cc (dtable::dup3): Only return with lock set when O_EXCL flag is

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passed in.
* syscalls.cc (dup_finish): Pass O_EXCL in flags to dtable::dup3.
This commit is contained in:
Christopher Faylor
2012-06-04 01:26:05 +00:00
parent 3143cb7c00
commit b9c61a8d7b
3 changed files with 16 additions and 2 deletions
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2
winsup/cygwin/syscalls.cc
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@@ -130,7 +130,7 @@ inline int
dup_finish (int oldfd, int newfd, int flags)
{
int res;
if ((res = cygheap->fdtab.dup3 (oldfd, newfd, flags)) == newfd)
if ((res = cygheap->fdtab.dup3 (oldfd, newfd, flags | O_EXCL)) == newfd)
{
cygheap_fdget (newfd)->inc_refcnt ();
cygheap->fdtab.unlock (); /* dup3 exits with lock set on success */