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Cygwin: signalfd: drop incorrect handling of EINTR in read(2) 

In case sigwait_common returns EINTR, read wrongly ignores it,
so read can't be interrupt by a signal.  Fix that.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2019-01-15 09:58:30 +01:00
parent 837eb2af5b
commit 704068e4f9
1 changed files with 5 additions and 7 deletions
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12
winsup/cygwin/fhandler_signalfd.cc
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@ -112,13 +112,11 @@ fhandler_signalfd::read (void *ptr, size_t& len)
? (PLARGE_INTEGER) &poll : NULL); ? (PLARGE_INTEGER) &poll : NULL);
if (ret == -1) if (ret == -1)
{ {
if (curlen == 0) /* If we already read a signal so the buffer isn't empty, just
{ return success. */
if (get_errno () == EINTR && curlen == 0) if (curlen > 0)
continue; break;
set_errno (old_errno); len = -1;
}
len = curlen ?: (size_t) -1;
return; return;
} }
__try __try