Move pg_pwritev_with_retry() to src/common/file_utils.c

This commit moves pg_pwritev_with_retry(), a convenience wrapper of
pg_writev() able to handle partial writes, to common/file_utils.c so
that the frontend code is able to use it.  A first use-case targetted
for this routine is pg_basebackup and pg_receivewal, for the
zero-padding of a newly-initialized WAL segment.  This is used currently
in the backend when the GUC wal_init_zero is enabled (default).

Author: Bharath Rupireddy
Reviewed-by: Nathan Bossart, Thomas Munro
Discussion: https://postgr.es/m/CALj2ACUq7nAb7=bJNbK3yYmp-SZhJcXFR_pLk8un6XgDzDF3OA@mail.gmail.com

1 files changed, 0 insertions, 6 deletions

diff --git a/src/include/storage/fd.h b/src/include/storage/fd.h
index 5a48fccd9c2..c0a212487d9 100644
--- a/src/include/storage/fd.h
+++ b/src/include/storage/fd.h
@@ -51,8 +51,6 @@ typedef enum RecoveryInitSyncMethod
 	RECOVERY_INIT_SYNC_METHOD_SYNCFS
 }			RecoveryInitSyncMethod;
 
-struct iovec;					/* avoid including port/pg_iovec.h here */
-
 typedef int File;
 
 
@@ -178,10 +176,6 @@ extern int	pg_fsync_no_writethrough(int fd);
 extern int	pg_fsync_writethrough(int fd);
 extern int	pg_fdatasync(int fd);
 extern void pg_flush_data(int fd, off_t offset, off_t nbytes);
-extern ssize_t pg_pwritev_with_retry(int fd,
-									 const struct iovec *iov,
-									 int iovcnt,
-									 off_t offset);
 extern int	pg_truncate(const char *path, off_t length);
 extern void fsync_fname(const char *fname, bool isdir);
 extern int	fsync_fname_ext(const char *fname, bool isdir, bool ignore_perm, int elevel);