From: Noel Power <noel.power@suse.com>
Date: Fri, 9 Apr 2021 13:57:08 +0000 (+0200)
Subject: s3/modules: VFS: snapper: Add new fchmod_fn implementation
X-Git-Tag: tevent-0.11.0~1220
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7501407f988d19f16a2f441f260df056ef8842b5;p=thirdparty%2Fsamba.git

s3/modules: VFS: snapper: Add new fchmod_fn implementation

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
---

diff --git a/source3/modules/vfs_snapper.c b/source3/modules/vfs_snapper.c
index 3b900c835a0..412a77059c9 100644
--- a/source3/modules/vfs_snapper.c
+++ b/source3/modules/vfs_snapper.c
@@ -2170,6 +2170,30 @@ static int snapper_gmt_chmod(vfs_handle_struct *handle,
 	return SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
 }
 
+static int snapper_gmt_fchmod(vfs_handle_struct *handle,
+                       struct files_struct *fsp,
+                       mode_t mode)
+{
+	time_t timestamp = 0;
+	const struct smb_filename *smb_fname = NULL;
+
+	smb_fname = fsp->fsp_name;
+
+	if (!snapper_gmt_strip_snapshot(talloc_tos(),
+					handle,
+					smb_fname,
+					&timestamp,
+					NULL)) {
+		return -1;
+	}
+
+	if (timestamp != 0) {
+		errno = EROFS;
+		return -1;
+	}
+	return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
+}
+
 static int snapper_gmt_chdir(vfs_handle_struct *handle,
 			const struct smb_filename *smb_fname)
 {
@@ -2726,6 +2750,7 @@ static struct vfs_fn_pointers snapper_fns = {
 	.openat_fn = snapper_gmt_openat,
 	.unlinkat_fn = snapper_gmt_unlinkat,
 	.chmod_fn = snapper_gmt_chmod,
+	.fchmod_fn = snapper_gmt_fchmod,
 	.chdir_fn = snapper_gmt_chdir,
 	.ntimes_fn = snapper_gmt_ntimes,
 	.readlinkat_fn = snapper_gmt_readlinkat,