smbd: Add extra VFS hooks to get the posix ACL as a blob

[metze/samba/wip.git] / source3 / modules / vfs_fake_acls.c

diff --git a/source3/modules/vfs_fake_acls.c b/source3/modules/vfs_fake_acls.c
index abe65700deb0bdf32c74d5622bb5c83351057cc4..258cb197c0b9dd766824029f4ad5ed5af8a55878 100644 (file)
--- a/source3/modules/vfs_fake_acls.c
+++ b/source3/modules/vfs_fake_acls.c
@@ -294,6 +294,72 @@ static SMB_ACL_T fake_acls_sys_acl_get_fd(struct vfs_handle_struct *handle, file
        return acl;
 }
 
+
+static int fake_acls_sys_acl_blob_get_file(struct vfs_handle_struct *handle, const char *path, SMB_ACL_TYPE_T type, TALLOC_CTX *mem_ctx, 
+                                          char **blob_description, DATA_BLOB *blob)
+{
+       ssize_t length;
+       const char *name = NULL;
+       switch (type) {
+       case SMB_ACL_TYPE_ACCESS:
+               name = FAKE_ACL_ACCESS_XATTR;
+               break;
+       case SMB_ACL_TYPE_DEFAULT:
+               name = FAKE_ACL_DEFAULT_XATTR;
+               break;
+       }
+
+       *blob_description = talloc_strdup(mem_ctx, "fake_acls");
+       if (!*blob_description) {
+               errno = ENOMEM;
+               return -1;
+       }
+
+       *blob = data_blob_null;
+       do {
+               blob->length += 1000;
+               blob->data = talloc_realloc(mem_ctx, blob->data, uint8_t, blob->length);
+               if (!blob->data) {
+                       errno = ENOMEM;
+                       return -1;
+               }
+               length = SMB_VFS_NEXT_GETXATTR(handle, path, name, blob->data, blob->length);
+               blob->length = length;
+       } while (length == -1 && errno == ERANGE);
+       if (length == -1) {
+               return -1;
+       }
+       return 0;
+}
+
+static int fake_acls_sys_acl_blob_get_fd(struct vfs_handle_struct *handle, files_struct *fsp, TALLOC_CTX *mem_ctx, 
+                                        char **blob_description, DATA_BLOB *blob)
+{
+       ssize_t length;
+       const char *name = FAKE_ACL_ACCESS_XATTR;
+               
+       *blob_description = talloc_strdup(mem_ctx, "fake_acls");
+       if (!*blob_description) {
+               errno = ENOMEM;
+               return -1;
+       }
+       *blob = data_blob_null;
+       do {
+               blob->length += 1000;
+               blob->data = talloc_realloc(mem_ctx, blob->data, uint8_t, blob->length);
+               if (!blob->data) {
+                       errno = ENOMEM;
+                       return -1;
+               }
+               length = SMB_VFS_NEXT_FGETXATTR(handle, fsp, name, blob->data, blob->length);
+               blob->length = length;
+       } while (length == -1 && errno == ERANGE);
+       if (length == -1) {
+               return -1;
+       }
+       return 0;
+}
+
 static int fake_acls_sys_acl_set_file(vfs_handle_struct *handle, const char *path, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
 {
        int ret;
@@ -450,6 +516,8 @@ static struct vfs_fn_pointers vfs_fake_acls_fns = {
        .fstat_fn = fake_acls_fstat,
        .sys_acl_get_file_fn = fake_acls_sys_acl_get_file,
        .sys_acl_get_fd_fn = fake_acls_sys_acl_get_fd,
+       .sys_acl_blob_get_file_fn = fake_acls_sys_acl_blob_get_file,
+       .sys_acl_blob_get_fd_fn = fake_acls_sys_acl_blob_get_fd,
        .sys_acl_set_file_fn = fake_acls_sys_acl_set_file,
        .sys_acl_set_fd_fn = fake_acls_sys_acl_set_fd,
        .sys_acl_delete_def_file_fn = fake_acls_sys_acl_delete_def_file,