s3: VFS: Add SMB_VFS_LINKAT().

Currently identical to SMB_VFS_LINK().

Next, move add to all VFS modules that implement
link and eventually remove link.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>

3 files changed, 25 insertions, 0 deletions

diff --git a/source3/include/smbprofile.h b/source3/include/smbprofile.h
index c479c76d508..82021a22448 100644
--- a/source3/include/smbprofile.h
+++ b/source3/include/smbprofile.h
@@ -85,6 +85,7 @@ struct tevent_context;
 	SMBPROFILE_STATS_BASIC(syscall_readlink) \
 	SMBPROFILE_STATS_BASIC(syscall_symlink) \
 	SMBPROFILE_STATS_BASIC(syscall_link) \
+	SMBPROFILE_STATS_BASIC(syscall_linkat) \
 	SMBPROFILE_STATS_BASIC(syscall_mknod) \
 	SMBPROFILE_STATS_BASIC(syscall_realpath) \
 	SMBPROFILE_STATS_BASIC(syscall_get_quota) \
diff --git a/source3/include/vfs.h b/source3/include/vfs.h
index dc407772079..4b9c1ed949f 100644
--- a/source3/include/vfs.h
+++ b/source3/include/vfs.h
@@ -273,6 +273,7 @@
 /* Version 42 - Remove share_access member from struct files_struct */
 /* Version 42 - Make "lease" a const* in create_file_fn */
 /* Version 42 - Move SMB_VFS_RENAME -> SMB_VFS_RENAMEAT */
+/* Version 42 - Add SMB_VFS_LINKAT. */
 
 #define SMB_VFS_INTERFACE_VERSION 42
 
@@ -802,6 +803,12 @@ struct vfs_fn_pointers {
 	int (*link_fn)(struct vfs_handle_struct *handle,
 				const struct smb_filename *old_smb_fname,
 				const struct smb_filename *new_smb_fname);
+	int (*linkat_fn)(struct vfs_handle_struct *handle,
+				struct files_struct *srcfsp,
+				const struct smb_filename *old_smb_fname,
+				struct files_struct *dstfsp,
+				const struct smb_filename *new_smb_fname,
+				int flags);
 	int (*mknod_fn)(struct vfs_handle_struct *handle,
 				const struct smb_filename *smb_fname,
 				mode_t mode,
@@ -1331,6 +1338,12 @@ int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
 int smb_vfs_call_link(struct vfs_handle_struct *handle,
 			const struct smb_filename *old_smb_fname,
 			const struct smb_filename *new_smb_fname);
+int smb_vfs_call_linkat(struct vfs_handle_struct *handle,
+			struct files_struct *srcfsp,
+			const struct smb_filename *old_smb_fname,
+			struct files_struct *dstfsp,
+			const struct smb_filename *new_smb_fname,
+			int flags);
 int smb_vfs_call_mknod(struct vfs_handle_struct *handle,
 			const struct smb_filename *smb_fname,
 			mode_t mode,
@@ -1757,6 +1770,12 @@ int vfs_not_implemented_vfs_readlink(vfs_handle_struct *handle,
 int vfs_not_implemented_link(vfs_handle_struct *handle,
 			     const struct smb_filename *old_smb_fname,
 			     const struct smb_filename *new_smb_fname);
+int vfs_not_implemented_linkat(vfs_handle_struct *handle,
+			struct files_struct *srcfsp,
+			const struct smb_filename *old_smb_fname,
+			struct files_struct *dstfsp,
+			const struct smb_filename *new_smb_fname,
+			int flags);
 int vfs_not_implemented_mknod(vfs_handle_struct *handle,
 			      const struct smb_filename *smb_fname,
 			      mode_t mode,
diff --git a/source3/include/vfs_macros.h b/source3/include/vfs_macros.h
index 7bbdc97a6c6..49edadb2786 100644
--- a/source3/include/vfs_macros.h
+++ b/source3/include/vfs_macros.h
@@ -311,6 +311,11 @@
 #define SMB_VFS_NEXT_LINK(handle, oldpath, newpath) \
 	smb_vfs_call_link((handle)->next, (oldpath), (newpath))
 
+#define SMB_VFS_LINKAT(conn, srcfsp, oldpath, dstfsp, newpath, flags) \
+	smb_vfs_call_linkat((conn)->vfs_handles, (srcfsp), (oldpath), (dstfsp), (newpath), (flags))
+#define SMB_VFS_NEXT_LINKAT(handle, srcfsp, oldpath, dstfsp, newpath, flags) \
+	smb_vfs_call_linkat((handle)->next, (srcfsp), (oldpath), (dstfsp), (newpath), (flags))
+
 #define SMB_VFS_MKNOD(conn, smb_fname, mode, dev) \
 	smb_vfs_call_mknod((conn)->vfs_handles, (smb_fname), (mode), (dev))
 #define SMB_VFS_NEXT_MKNOD(handle, smb_fname, mode, dev) \