This patch adds a new fdt_get_name() function to libfdt which will
return a node's name string (including unit address, if any).
Signed-off-by: David Gibson <[EMAIL PROTECTED]>
---
libfdt/fdt_ro.c | 24 ++++++++++++++
libfdt/libfdt.h | 2 +
tests/Makefile.tests | 3 +
tests/get_name.c | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++
tests/run_tests.sh | 1
5 files changed, 112 insertions(+), 1 deletion(-)
Index: dtc/libfdt/fdt_ro.c
===================================================================
--- dtc.orig/libfdt/fdt_ro.c 2007-08-29 13:14:06.000000000 +1000
+++ dtc/libfdt/fdt_ro.c 2007-08-29 14:09:29.000000000 +1000
@@ -169,6 +169,30 @@
return offset;
}
+const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
+{
+ const struct fdt_node_header *nh;
+ int err;
+
+ if ((err = _fdt_check_header(fdt)) != 0)
+ goto fail;
+
+ err = -FDT_ERR_BADOFFSET;
+ nh = fdt_offset_ptr(fdt, nodeoffset, sizeof(*nh));
+ if (!nh || (fdt32_to_cpu(nh->tag) != FDT_BEGIN_NODE))
+ goto fail;
+
+ if (len)
+ *len = strlen(nh->name);
+
+ return nh->name;
+
+ fail:
+ if (len)
+ *len = err;
+ return NULL;
+}
+
const struct fdt_property *fdt_get_property(const void *fdt,
int nodeoffset,
const char *name, int *lenp)
Index: dtc/libfdt/libfdt.h
===================================================================
--- dtc.orig/libfdt/libfdt.h 2007-08-29 13:14:06.000000000 +1000
+++ dtc/libfdt/libfdt.h 2007-08-29 14:09:29.000000000 +1000
@@ -115,6 +115,8 @@
int fdt_path_offset(const void *fdt, const char *path);
+const char *fdt_get_name(const void *fdt, int nodeoffset, int *baselen);
+
const struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset,
const char *name, int *lenp);
Index: dtc/tests/Makefile.tests
===================================================================
--- dtc.orig/tests/Makefile.tests 2007-08-29 13:14:06.000000000 +1000
+++ dtc/tests/Makefile.tests 2007-08-29 14:09:29.000000000 +1000
@@ -1,4 +1,5 @@
-LIB_TESTS_L = root_node find_property subnode_offset path_offset getprop \
+LIB_TESTS_L = root_node find_property subnode_offset path_offset \
+ get_name getprop \
notfound \
setprop_inplace nop_property nop_node \
sw_tree1 \
Index: dtc/tests/run_tests.sh
===================================================================
--- dtc.orig/tests/run_tests.sh 2007-08-29 13:14:06.000000000 +1000
+++ dtc/tests/run_tests.sh 2007-08-29 14:09:29.000000000 +1000
@@ -35,6 +35,7 @@
run_test find_property $TREE
run_test subnode_offset $TREE
run_test path_offset $TREE
+ run_test get_name $TREE
run_test getprop $TREE
run_test notfound $TREE
Index: dtc/tests/get_name.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ dtc/tests/get_name.c 2007-08-29 13:14:50.000000000 +1000
@@ -0,0 +1,83 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Testcase for fdt_get_name()
+ * 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+void check_name(void *fdt, const char *path)
+{
+ int offset;
+ const char *getname, *getname2, *checkname;
+ int len;
+
+ checkname = strrchr(path, '/');
+ if (!checkname)
+ TEST_BUG();
+ checkname += 1;
+
+ offset = fdt_path_offset(fdt, path);
+ if (offset < 0)
+ FAIL("Couldn't find %s", path);
+
+ getname = fdt_get_name(fdt, offset, &len);
+ verbose_printf("fdt_get_name(%d) returns \"%s\" (len=%d)\n",
+ offset, getname, len);
+ if (!getname)
+ FAIL("fdt_get_name(%d): %s", offset, fdt_strerror(len));
+
+ if (strcmp(getname, checkname) != 0)
+ FAIL("fdt_get_name(%s) returned \"%s\" instead of \"%s\"",
+ path, getname, checkname);
+
+ if (len != strlen(getname))
+ FAIL("fdt_get_name(%s) returned length %d instead of %d",
+ path, len, strlen(getname));
+
+ /* Now check that it doesn't break if we omit len */
+ getname2 = fdt_get_name(fdt, offset, NULL);
+ if (!getname2)
+ FAIL("fdt_get_name(%d, NULL) failed", offset);
+ if (strcmp(getname2, getname) != 0)
+ FAIL("fdt_get_name(%d, NULL) returned \"%s\" instead of \"%s\"",
+ offset, getname2, getname);
+}
+
+int main(int argc, char *argv[])
+{
+ void *fdt;
+
+ test_init(argc, argv);
+ fdt = load_blob_arg(argc, argv);
+
+ check_name(fdt, "/");
+ check_name(fdt, "/subnode1");
+ check_name(fdt, "/subnode2");
+ check_name(fdt, "/subnode1/subsubnode");
+ check_name(fdt, "/subnode2/subsubnode");
+
+ PASS();
+}
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