From e898391728b43b0bb02938e98a4df08f5a76ac04 Mon Sep 17 00:00:00 2001
From: djm <djm>
Date: Fri, 4 Jul 2008 23:36:58 +0000
Subject: [PATCH]  - (djm) [atomicio.c configure.ac] Disable poll() fallback in
 atomiciov for    Tru64. readv doesn't seem to be a comparable object there.  
  bz#1386, patch from dtucker@ ok me

---
 ChangeLog    | 3 +++
 atomicio.c   | 4 ++++
 configure.ac | 1 +
 3 files changed, 8 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index d57808f3..0db459f9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,9 @@
  - (djm) [auth.c] Fixed test for locked account on HP/UX with shadowed
    passwords disabled. bz#1083 report & patch from senthilkumar_sen AT
    hotpop.com, w/ dtucker@
+ - (djm) [atomicio.c configure.ac] Disable poll() fallback in atomiciov for
+   Tru64. readv doesn't seem to be a comparable object there.
+   bz#1386, patch from dtucker@ ok me
 
 20080704
  - (dtucker) OpenBSD CVS Sync
diff --git a/atomicio.c b/atomicio.c
index bb44c323..a6b2d127 100644
--- a/atomicio.c
+++ b/atomicio.c
@@ -97,8 +97,10 @@ atomiciov(ssize_t (*f) (int, const struct iovec *, int), int fd,
 	/* Make a copy of the iov array because we may modify it below */
 	memcpy(iov, _iov, iovcnt * sizeof(*_iov));
 
+#ifndef BROKEN_READV_COMPARISON
 	pfd.fd = fd;
 	pfd.events = f == readv ? POLLIN : POLLOUT;
+#endif
 	for (; iovcnt > 0 && iov[0].iov_len > 0;) {
 		res = (f) (fd, iov, iovcnt);
 		switch (res) {
@@ -106,7 +108,9 @@ atomiciov(ssize_t (*f) (int, const struct iovec *, int), int fd,
 			if (errno == EINTR)
 				continue;
 			if (errno == EAGAIN || errno == EWOULDBLOCK) {
+#ifndef BROKEN_READV_COMPARISON
 				(void)poll(&pfd, 1, -1);
+#endif
 				continue;
 			}
 			return 0;
diff --git a/configure.ac b/configure.ac
index 2e8d270d..a970e02a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -841,6 +841,7 @@ mips-sony-bsd|mips-sony-newsos4)
 	AC_DEFINE(SETEUID_BREAKS_SETUID)
 	AC_DEFINE(BROKEN_SETREUID)
 	AC_DEFINE(BROKEN_SETREGID)
+	AC_DEFINE(BROKEN_READV_COMPARISON, 1, [Can't do comparisons on readv]))
 	;;
 
 *-*-nto-qnx*)
-- 
2.45.2