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Diffstat (limited to 'dtc/tests/path_offset.c')
| -rw-r--r-- | dtc/tests/path_offset.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/dtc/tests/path_offset.c b/dtc/tests/path_offset.c new file mode 100644 index 000000000..82527d463 --- /dev/null +++ b/dtc/tests/path_offset.c @@ -0,0 +1,124 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later +/* + * libfdt - Flat Device Tree manipulation + * Testcase for fdt_path_offset() + * Copyright (C) 2006 David Gibson, IBM Corporation. + */ +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdint.h> + +#include <libfdt.h> + +#include "tests.h" +#include "testdata.h" + +static int check_subnode(void *fdt, int parent, const char *name) +{ + int offset; + const struct fdt_node_header *nh; + uint32_t tag; + + verbose_printf("Checking subnode \"%s\" of %d...", name, parent); + offset = fdt_subnode_offset(fdt, parent, name); + verbose_printf("offset %d...", offset); + if (offset < 0) + FAIL("fdt_subnode_offset(\"%s\"): %s", name, fdt_strerror(offset)); + nh = fdt_offset_ptr(fdt, offset, sizeof(*nh)); + verbose_printf("pointer %p\n", nh); + if (! nh) + FAIL("NULL retrieving subnode \"%s\"", name); + + tag = fdt32_to_cpu(nh->tag); + + if (tag != FDT_BEGIN_NODE) + FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name); + if (!nodename_eq(nh->name, name)) + FAIL("Subnode name mismatch \"%s\" instead of \"%s\"", + nh->name, name); + + return offset; +} + +static void check_path_offset(void *fdt, char *path, int offset) +{ + int rc; + + verbose_printf("Checking offset of \"%s\" is %d...\n", path, offset); + + rc = fdt_path_offset(fdt, path); + if (rc < 0) + FAIL("fdt_path_offset(\"%s\") failed: %s", + path, fdt_strerror(rc)); + if (rc != offset) + FAIL("fdt_path_offset(\"%s\") returned incorrect offset" + " %d instead of %d", path, rc, offset); +} + +static void check_path_offset_namelen(void *fdt, char *path, int namelen, + int offset) +{ + int rc; + + verbose_printf("Checking offset of \"%s\" [first %d characters]" + " is %d...\n", path, namelen, offset); + + rc = fdt_path_offset_namelen(fdt, path, namelen); + if (rc == offset) + return; + + if (rc < 0) + FAIL("fdt_path_offset_namelen(\"%s\", %d) failed: %s", + path, namelen, fdt_strerror(rc)); + else + FAIL("fdt_path_offset_namelen(\"%s\", %d) returned incorrect" + " offset %d instead of %d", path, namelen, rc, offset); +} + +int main(int argc, char *argv[]) +{ + void *fdt; + int subnode1_offset, subnode2_offset; + int subsubnode1_offset, subsubnode2_offset, subsubnode2_offset2; + + test_init(argc, argv); + fdt = load_blob_arg(argc, argv); + + check_path_offset(fdt, "/", 0); + + subnode1_offset = check_subnode(fdt, 0, "subnode@1"); + subnode2_offset = check_subnode(fdt, 0, "subnode@2"); + + check_path_offset(fdt, "/subnode@1", subnode1_offset); + check_path_offset(fdt, "/subnode@2", subnode2_offset); + + subsubnode1_offset = check_subnode(fdt, subnode1_offset, "subsubnode"); + subsubnode2_offset = check_subnode(fdt, subnode2_offset, "subsubnode@0"); + subsubnode2_offset2 = check_subnode(fdt, subnode2_offset, "subsubnode"); + + check_path_offset(fdt, "/subnode@1/subsubnode", subsubnode1_offset); + check_path_offset(fdt, "/subnode@2/subsubnode@0", subsubnode2_offset); + check_path_offset(fdt, "/subnode@2/subsubnode", subsubnode2_offset2); + + /* Test paths with extraneous separators */ + check_path_offset(fdt, "//", 0); + check_path_offset(fdt, "///", 0); + check_path_offset(fdt, "//subnode@1", subnode1_offset); + check_path_offset(fdt, "/subnode@1/", subnode1_offset); + check_path_offset(fdt, "//subnode@1///", subnode1_offset); + check_path_offset(fdt, "/subnode@2////subsubnode", subsubnode2_offset2); + + /* Test fdt_path_offset_namelen() */ + check_path_offset_namelen(fdt, "/subnode@1", 1, 0); + check_path_offset_namelen(fdt, "/subnode@1/subsubnode", 10, subnode1_offset); + check_path_offset_namelen(fdt, "/subnode@1/subsubnode", 11, subnode1_offset); + check_path_offset_namelen(fdt, "/subnode@2TRAILINGGARBAGE", 10, subnode2_offset); + check_path_offset_namelen(fdt, "/subnode@2TRAILINGGARBAGE", 11, -FDT_ERR_NOTFOUND); + check_path_offset_namelen(fdt, "/subnode@2/subsubnode@0/more", 23, subsubnode2_offset2); + check_path_offset_namelen(fdt, "/subnode@2/subsubnode@0/more", 22, -FDT_ERR_NOTFOUND); + check_path_offset_namelen(fdt, "/subnode@2/subsubnode@0/more", 24, subsubnode2_offset2); + check_path_offset_namelen(fdt, "/subnode@2/subsubnode@0/more", 25, -FDT_ERR_NOTFOUND); + + PASS(); +} |