From 827c68deb89b5bd14324c57db14274b36a0790d7 Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Tue, 6 Jan 2004 01:21:59 +0000
Subject: Patch based on work from James Peach <jpeach@sgi.com> to convert over
 to using pread/pwrite. Modified a little to ensure fsp->pos is correct. Fix
 for #889. Jeremy. (This used to be commit
 3a24dc868d95c9bcc2ac3a0dbd50e6e226ac0841)

---
 source3/lib/system.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'source3/lib')

diff --git a/source3/lib/system.c b/source3/lib/system.c
index 577f0b9a20..16384c8bdf 100644
--- a/source3/lib/system.c
+++ b/source3/lib/system.c
@@ -100,6 +100,47 @@ ssize_t sys_write(int fd, const void *buf, size_t count)
 	return ret;
 }
 
+
+/*******************************************************************
+A pread wrapper that will deal with EINTR and 64-bit file offsets.
+********************************************************************/
+
+#if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
+ssize_t sys_pread(int fd, void *buf, size_t count, SMB_OFF_T off)
+{
+	ssize_t ret;
+
+	do {
+#if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_PREAD64)
+		ret = pread64(fd, buf, count, off);
+#else
+		ret = pread(fd, buf, count, off);
+#endif
+	} while (ret == -1 && errno == EINTR);
+	return ret;
+}
+#endif
+
+/*******************************************************************
+A write wrapper that will deal with EINTR and 64-bit file offsets.
+********************************************************************/
+
+#if defined(HAVE_PWRITE) || defined(HAVE_PWRITE64)
+ssize_t sys_pwrite(int fd, const void *buf, size_t count, SMB_OFF_T off)
+{
+	ssize_t ret;
+
+	do {
+#if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(HAVE_PWRITE64)
+		ret = pwrite64(fd, buf, count, off);
+#else
+		ret = pwrite(fd, buf, count, off);
+#endif
+	} while (ret == -1 && errno == EINTR);
+	return ret;
+}
+#endif
+
 /*******************************************************************
 A send wrapper that will deal with EINTR.
 ********************************************************************/
-- 
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