/* $NetBSD: supernode_atdepth_offset.c,v 1.1.1.2 2017/06/08 15:59:27 skrll Exp $ */ /* * libfdt - Flat Device Tree manipulation * Testcase for fdt_supernode_atdepth_offset() * Copyright (C) 2006 David Gibson, IBM Corporation. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "tests.h" #include "testdata.h" static int path_depth(const char *path) { const char *p; int depth = 0; if (path[0] != '/') TEST_BUG(); if (strcmp(path, "/") == 0) return 0; for (p = path; *p; p++) if (*p == '/') depth++; /* Special case for path == "/" */ if (p == (path + 1)) return 0; else return depth; } static int path_prefix(const char *path, int depth) { const char *p; int i; if (path[0] != '/') TEST_BUG(); if (depth == 0) return 1; p = path; for (i = 0; i < depth; i++) p = p+1 + strcspn(p+1, "/"); return p - path; } static void check_supernode_atdepth(struct fdt_header *fdt, const char *path, int depth) { int pdepth = path_depth(path); char *superpath; int nodeoffset, supernodeoffset, superpathoffset, pathprefixlen; int nodedepth; pathprefixlen = path_prefix(path, depth); superpath = alloca(pathprefixlen + 1); strncpy(superpath, path, pathprefixlen); superpath[pathprefixlen] = '\0'; verbose_printf("Path %s (%d), depth %d, supernode is %s\n", path, pdepth, depth, superpath); nodeoffset = fdt_path_offset(fdt, path); if (nodeoffset < 0) FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(nodeoffset)); superpathoffset = fdt_path_offset(fdt, superpath); if (superpathoffset < 0) FAIL("fdt_path_offset(%s): %s", superpath, fdt_strerror(superpathoffset)); supernodeoffset = fdt_supernode_atdepth_offset(fdt, nodeoffset, depth, &nodedepth); if (supernodeoffset < 0) FAIL("fdt_supernode_atdepth_offset(): %s", fdt_strerror(supernodeoffset)); if (supernodeoffset != superpathoffset) FAIL("fdt_supernode_atdepth_offset() returns %d instead of %d", supernodeoffset, superpathoffset); if (nodedepth != pdepth) FAIL("fdt_supernode_atdept_offset() returns node depth %d " "instead of %d", nodedepth, pdepth); } static void check_supernode_overdepth(struct fdt_header *fdt, const char *path) { int pdepth = path_depth(path); int nodeoffset, err; nodeoffset = fdt_path_offset(fdt, path); if (nodeoffset < 0) FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(nodeoffset)); err = fdt_supernode_atdepth_offset(fdt, nodeoffset, pdepth + 1, NULL); if (err != -FDT_ERR_NOTFOUND) FAIL("fdt_supernode_atdept_offset(%s, %d) returns %d instead " "of FDT_ERR_NOTFOUND", path, pdepth+1, err); } static void check_path(struct fdt_header *fdt, const char *path) { int i; for (i = 0; i <= path_depth(path); i++) check_supernode_atdepth(fdt, path, i); check_supernode_overdepth(fdt, path); } int main(int argc, char *argv[]) { void *fdt; test_init(argc, argv); fdt = load_blob_arg(argc, argv); check_path(fdt, "/"); check_path(fdt, "/subnode@1"); check_path(fdt, "/subnode@2"); check_path(fdt, "/subnode@1/subsubnode"); check_path(fdt, "/subnode@2/subsubnode@0"); PASS(); }