From 412b05fec9323a093fe271ae01b4083ea2d1fc1f Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Tue, 22 Jun 2021 09:50:27 +0200
Subject: [PATCH] Add hidden prototypes for fsync, fdatasync

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
---
 include/unistd.h                    | 2 ++
 misc/fdatasync.c                    | 1 +
 misc/fsync.c                        | 2 +-
 sysdeps/mach/hurd/fdatasync.c       | 1 +
 sysdeps/mach/hurd/fsync.c           | 1 +
 sysdeps/unix/sysv/linux/fdatasync.c | 1 +
 sysdeps/unix/sysv/linux/fsync.c     | 1 +
 7 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/unistd.h b/include/unistd.h
index 8ed8b1ea4b..34872d8b41 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -25,6 +25,8 @@ libc_hidden_proto (seteuid)
 libc_hidden_proto (setegid)
 libc_hidden_proto (tcgetpgrp)
 libc_hidden_proto (readlinkat)
+libc_hidden_proto (fsync)
+libc_hidden_proto (fdatasync)
 
 /* Now define the internal interfaces.  */
 extern int __access (const char *__name, int __type);
diff --git a/misc/fdatasync.c b/misc/fdatasync.c
index 28474812ca..c776978bba 100644
--- a/misc/fdatasync.c
+++ b/misc/fdatasync.c
@@ -25,3 +25,4 @@ fdatasync (int fildes)
 {
   return fsync (fildes);
 }
+libc_hidden_def (fdatasync)
diff --git a/misc/fsync.c b/misc/fsync.c
index e1c37c6016..1961dd0cb2 100644
--- a/misc/fsync.c
+++ b/misc/fsync.c
@@ -25,6 +25,6 @@ fsync (int fd)
   __set_errno (ENOSYS);
   return -1;
 }
-
+libc_hidden_def (fsync)
 
 stub_warning (fsync)
diff --git a/sysdeps/mach/hurd/fdatasync.c b/sysdeps/mach/hurd/fdatasync.c
index 0be8072e7f..68df551016 100644
--- a/sysdeps/mach/hurd/fdatasync.c
+++ b/sysdeps/mach/hurd/fdatasync.c
@@ -41,3 +41,4 @@ fdatasync (int fd)
     }
   return 0;
 }
+libc_hidden_def (fdatasync)
diff --git a/sysdeps/mach/hurd/fsync.c b/sysdeps/mach/hurd/fsync.c
index ef04ee97f9..c1d560f293 100644
--- a/sysdeps/mach/hurd/fsync.c
+++ b/sysdeps/mach/hurd/fsync.c
@@ -41,3 +41,4 @@ fsync (int fd)
     }
   return 0;
 }
+libc_hidden_def (fsync)
diff --git a/sysdeps/unix/sysv/linux/fdatasync.c b/sysdeps/unix/sysv/linux/fdatasync.c
index 84c07f212e..12fb3c13e5 100644
--- a/sysdeps/unix/sysv/linux/fdatasync.c
+++ b/sysdeps/unix/sysv/linux/fdatasync.c
@@ -27,3 +27,4 @@ fdatasync (int fd)
 {
   return SYSCALL_CANCEL (fdatasync, fd);
 }
+libc_hidden_def (fdatasync)
diff --git a/sysdeps/unix/sysv/linux/fsync.c b/sysdeps/unix/sysv/linux/fsync.c
index 234bb0049f..e4b5c8c342 100644
--- a/sysdeps/unix/sysv/linux/fsync.c
+++ b/sysdeps/unix/sysv/linux/fsync.c
@@ -26,3 +26,4 @@ fsync (int fd)
 {
   return SYSCALL_CANCEL (fsync, fd);
 }
+libc_hidden_def (fsync)