From: Jeremy Allison <jra@samba.org>
Date: Mon, 13 Apr 2020 19:24:14 +0000 (-0700)
Subject: s3: VFS: acl_xattr.c: Add fget_acl_blob().
X-Git-Tag: ldb-2.2.0~624
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=936b9aee5e699fba92cd70885e1a16971252d1d9;p=thirdparty%2Fsamba.git

s3: VFS: acl_xattr.c: Add fget_acl_blob().

Separate from get_acl_blob() which took both an fsp and a pathname.
Commented out so we still compile.

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

diff --git a/source3/modules/vfs_acl_xattr.c b/source3/modules/vfs_acl_xattr.c
index 7ac7a8dca60..d6005cead72 100644
--- a/source3/modules/vfs_acl_xattr.c
+++ b/source3/modules/vfs_acl_xattr.c
@@ -64,6 +64,66 @@ static ssize_t getxattr_do(vfs_handle_struct *handle,
 	return sizeret;
 }
 
+#if 0
+static NTSTATUS fget_acl_blob(TALLOC_CTX *ctx,
+			vfs_handle_struct *handle,
+			files_struct *fsp,
+			DATA_BLOB *pblob)
+{
+	size_t size = 4096;
+	uint8_t *val = NULL;
+	uint8_t *tmp;
+	ssize_t sizeret;
+
+	ZERO_STRUCTP(pblob);
+
+  again:
+
+	tmp = talloc_realloc(ctx, val, uint8_t, size);
+	if (tmp == NULL) {
+		TALLOC_FREE(val);
+		return NT_STATUS_NO_MEMORY;
+	}
+	val = tmp;
+
+	sizeret =
+	    getxattr_do(handle, fsp, NULL, XATTR_NTACL_NAME, val, size);
+
+	if (sizeret >= 0) {
+		pblob->data = val;
+		pblob->length = sizeret;
+		return NT_STATUS_OK;
+	}
+
+	if (errno != ERANGE) {
+		goto err;
+	}
+
+	/* Too small, try again. */
+	sizeret =
+	    getxattr_do(handle, fsp, NULL, XATTR_NTACL_NAME, NULL, 0);
+	if (sizeret < 0) {
+		goto err;
+	}
+
+	if (size < sizeret) {
+		size = sizeret;
+	}
+
+	if (size > 65536) {
+		/* Max ACL size is 65536 bytes. */
+		errno = ERANGE;
+		goto err;
+	}
+
+	goto again;
+  err:
+	/* Real error - exit here. */
+	TALLOC_FREE(val);
+	return map_nt_error_from_unix(errno);
+}
+#endif
+
 static NTSTATUS get_acl_blob(TALLOC_CTX *ctx,
 			vfs_handle_struct *handle,
 			files_struct *fsp,