1 files changed, 2 insertions, 105 deletions

diff --git a/src/port/pwrite.c b/src/port/pwrite.c
index a98343ec05b..282b27115e5 100644
--- a/src/port/pwrite.c
+++ b/src/port/pwrite.c
@@ -1,7 +1,7 @@
 /*-------------------------------------------------------------------------
  *
  * pwrite.c
- *	  Implementation of pwrite[v](2) for platforms that lack one.
+ *	  Implementation of pwrite(2) for platforms that lack one.
  *
  * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
  *
@@ -9,8 +9,7 @@
  *	  src/port/pwrite.c
  *
  * Note that this implementation changes the current file position, unlike
- * the POSIX function, so we use the name pg_pwrite().  Likewise for the
- * iovec version.
+ * the POSIX function, so we use the name pg_pwrite().
  *
  *-------------------------------------------------------------------------
  */
@@ -24,9 +23,6 @@
 #include <unistd.h>
 #endif
 
-#include "port/pg_iovec.h"
-
-#ifndef HAVE_PWRITE
 ssize_t
 pg_pwrite(int fd, const void *buf, size_t size, off_t offset)
 {
@@ -57,102 +53,3 @@ pg_pwrite(int fd, const void *buf, size_t size, off_t offset)
 	return write(fd, buf, size);
 #endif
 }
-#endif
-
-#ifndef HAVE_PWRITEV
-ssize_t
-pg_pwritev(int fd, const struct iovec *iov, int iovcnt, off_t offset)
-{
-#ifdef HAVE_WRITEV
-	if (iovcnt == 1)
-		return pg_pwrite(fd, iov[0].iov_base, iov[0].iov_len, offset);
-	if (lseek(fd, offset, SEEK_SET) < 0)
-		return -1;
-	return writev(fd, iov, iovcnt);
-#else
-	ssize_t		sum = 0;
-	ssize_t		part;
-
-	for (int i = 0; i < iovcnt; ++i)
-	{
-		part = pg_pwrite(fd, iov[i].iov_base, iov[i].iov_len, offset);
-		if (part < 0)
-		{
-			if (i == 0)
-				return -1;
-			else
-				return sum;
-		}
-		sum += part;
-		offset += part;
-		if (part < iov[i].iov_len)
-			return sum;
-	}
-	return sum;
-#endif
-}
-#endif
-
-/*
- * A convenience wrapper for pg_pwritev() that retries on partial write.  If an
- * error is returned, it is unspecified how much has been written.
- */
-ssize_t
-pg_pwritev_with_retry(int fd, const struct iovec *iov, int iovcnt, off_t offset)
-{
-	struct iovec iov_copy[PG_IOV_MAX];
-	ssize_t		sum = 0;
-	ssize_t		part;
-
-	/* We'd better have space to make a copy, in case we need to retry. */
-	if (iovcnt > PG_IOV_MAX)
-	{
-		errno = EINVAL;
-		return -1;
-	}
-
-	for (;;)
-	{
-		/* Write as much as we can. */
-		part = pg_pwritev(fd, iov, iovcnt, offset);
-		if (part < 0)
-			return -1;
-
-#ifdef SIMULATE_SHORT_WRITE
-		part = Min(part, 4096);
-#endif
-
-		/* Count our progress. */
-		sum += part;
-		offset += part;
-
-		/* Step over iovecs that are done. */
-		while (iovcnt > 0 && iov->iov_len <= part)
-		{
-			part -= iov->iov_len;
-			++iov;
-			--iovcnt;
-		}
-
-		/* Are they all done? */
-		if (iovcnt == 0)
-		{
-			/* We don't expect the kernel to write more than requested. */
-			Assert(part == 0);
-			break;
-		}
-
-		/*
-		 * Move whatever's left to the front of our mutable copy and adjust
-		 * the leading iovec.
-		 */
-		Assert(iovcnt > 0);
-		memmove(iov_copy, iov, sizeof(*iov) * iovcnt);
-		Assert(iov->iov_len > part);
-		iov_copy[0].iov_base = (char *) iov_copy[0].iov_base + part;
-		iov_copy[0].iov_len -= part;
-		iov = iov_copy;
-	}
-
-	return sum;
-}