43     ssize_t sz, size;  in bootctrl_read_metadata()  local
60         sz = read(fd, buf, size);  in bootctrl_read_metadata()
61         if (sz == 0) {  in bootctrl_read_metadata()
63         } else if (sz < 0) {  in bootctrl_read_metadata()
72         size -= sz;  in bootctrl_read_metadata()
73         buf += sz;  in bootctrl_read_metadata()
89     ssize_t sz, size;  in bootctrl_write_metadata()  local
107         sz = write(fd, buf, size);  in bootctrl_write_metadata()
108         if (sz == 0) {  in bootctrl_write_metadata()
110         } else if (sz < 0) {  in bootctrl_write_metadata()
119         size -= sz;  in bootctrl_write_metadata()
120         buf += sz;  in bootctrl_write_metadata()
141     ssize_t size = COMMAND_LINE_SIZE, sz;  in bootctrl_get_active_slot()  local
160         sz = read(fd, buf, size);  in bootctrl_get_active_slot()
161         if (sz == 0) {  in bootctrl_get_active_slot()
163         } else if (sz < 0) {  in bootctrl_get_active_slot()
173         size -= sz;  in bootctrl_get_active_slot()
174         buf += sz;  in bootctrl_get_active_slot()