* [PATCH v2 3/5] fdtput: Add -c option to create nodes
[not found] ` <1342108371-15616-2-git-send-email-sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
@ 2012-07-12 15:52 ` Simon Glass
2012-07-12 15:52 ` [PATCH v2 5/5] fdtput: Add -p option to create subnodes along entire path Simon Glass
1 sibling, 0 replies; 4+ messages in thread
From: Simon Glass @ 2012-07-12 15:52 UTC (permalink / raw)
To: Devicetree Discuss
This option allows the creation of new nodes in a dtb file. The syntax
is:
fdtput -c <dtb_file> <node_path>
The node_path contains the path of the node to be created. All path
components up to the final one must exist already. The final one must
not exist already.
Signed-off-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
---
Changes in v2:
- Update -c help message slightly
fdtput.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++-
tests/run_tests.sh | 13 +++++++++++++
2 files changed, 64 insertions(+), 1 deletions(-)
diff --git a/fdtput.c b/fdtput.c
index da63539..a414fe9 100644
--- a/fdtput.c
+++ b/fdtput.c
@@ -31,6 +31,7 @@
/* These are the operations we support */
enum oper_type {
OPER_WRITE_PROP, /* Write a property in a node */
+ OPER_CREATE_NODE, /* Create a new node */
};
struct display_info {
@@ -138,6 +139,46 @@ static int store_key_value(void *blob, const char *node_name,
return 0;
}
+/**
+ * Create a new node in the fdt.
+ *
+ * This will overwrite the node_name string. Any error is reported.
+ *
+ * TODO: Perhaps create fdt_path_offset_namelen() so we don't need to do this.
+ *
+ * @param blob FDT blob to write into
+ * @param node_name Name of node to create
+ * @return new node offset if found, or -1 on failure
+ */
+static int create_node(void *blob, const char *node_name)
+{
+ int node = 0;
+ char *p;
+
+ p = strrchr(node_name, '/');
+ if (!p) {
+ report_error(node_name, -FDT_ERR_BADPATH);
+ return -1;
+ }
+ *p = '\0';
+
+ if (p > node_name) {
+ node = fdt_path_offset(blob, node_name);
+ if (node < 0) {
+ report_error(node_name, node);
+ return -1;
+ }
+ }
+
+ node = fdt_add_subnode(blob, node, p + 1);
+ if (node < 0) {
+ report_error(p + 1, node);
+ return -1;
+ }
+
+ return 0;
+}
+
static int do_fdtput(struct display_info *disp, const char *filename,
char **arg, int arg_count)
{
@@ -160,6 +201,10 @@ static int do_fdtput(struct display_info *disp, const char *filename,
store_key_value(blob, *arg, arg[1], value, len))
ret = -1;
break;
+ case OPER_CREATE_NODE:
+ for (; ret >= 0 && arg_count--; arg++)
+ ret = create_node(blob, *arg);
+ break;
}
if (ret >= 0)
ret = utilfdt_write(filename, blob);
@@ -175,7 +220,9 @@ static const char *usage_msg =
"\n"
"Usage:\n"
" fdtput <options> <dt file> <node> <property> [<value>...]\n"
+ " fdtput -c <options> <dt file> [<node>...]\n"
"Options:\n"
+ "\t-c\t\tCreate nodes if they don't already exist\n"
"\t-t <type>\tType of data\n"
"\t-v\t\tVerbose: display each value decoded from command line\n"
"\t-h\t\tPrint this help\n\n"
@@ -199,7 +246,7 @@ int main(int argc, char *argv[])
disp.size = -1;
disp.oper = OPER_WRITE_PROP;
for (;;) {
- int c = getopt(argc, argv, "ht:v");
+ int c = getopt(argc, argv, "cht:v");
if (c == -1)
break;
@@ -213,6 +260,9 @@ int main(int argc, char *argv[])
* - expand fdt if value doesn't fit
*/
switch (c) {
+ case 'c':
+ disp.oper = OPER_CREATE_NODE;
+ break;
case 'h':
case '?':
usage(NULL);
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index 073a833..acec2a5 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -539,6 +539,19 @@ fdtput_tests () {
# This should be larger than available space in the fdt
run_wrap_error_test $DTPUT $dtb /randomnode blob -ts "$(cat $text $text)"
+ # Start again with a fresh dtb
+ run_dtc_test -O dtb -p $(stat -c %s $text) -o $dtb $dts
+
+ # Node creation
+ run_wrap_error_test $DTPUT $dtb -c /baldrick sod
+ run_wrap_test $DTPUT $dtb -c /chosen/son /chosen/daughter
+ run_fdtput_test "eva" $dtb /chosen/daughter name "" -ts "eva"
+ run_fdtput_test "adam" $dtb /chosen/son name "" -ts "adam"
+
+ # Not allowed to create an existing node
+ run_wrap_error_test $DTPUT $dtb -c /chosen
+ run_wrap_error_test $DTPUT $dtb -c /chosen/son
+
# TODO: Add tests for verbose mode?
}
--
1.7.7.3
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH v2 5/5] fdtput: Add -p option to create subnodes along entire path
[not found] ` <1342108371-15616-2-git-send-email-sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2012-07-12 15:52 ` [PATCH v2 3/5] fdtput: Add -c option to create nodes Simon Glass
@ 2012-07-12 15:52 ` Simon Glass
[not found] ` <1342108371-15616-5-git-send-email-sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
1 sibling, 1 reply; 4+ messages in thread
From: Simon Glass @ 2012-07-12 15:52 UTC (permalink / raw)
To: Devicetree Discuss
This option mimics mkdir's -p option. It automatically creates nodes
as needed along the path provided. If the node already exists, no
error is given.
Signed-off-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
---
Changes in v2:
- Update -p help message slightly
fdtput.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++---
tests/run_tests.sh | 13 +++++++++++
2 files changed, 68 insertions(+), 4 deletions(-)
diff --git a/fdtput.c b/fdtput.c
index 1f048a8..f2197f5 100644
--- a/fdtput.c
+++ b/fdtput.c
@@ -39,6 +39,7 @@ struct display_info {
int type; /* data type (s/i/u/x or 0 for default) */
int size; /* data size (1/2/4) */
int verbose; /* verbose output */
+ int auto_path; /* automatically create all path components */
};
@@ -151,6 +152,47 @@ static int store_key_value(void *blob, const char *node_name,
}
/**
+ * Create paths as needed for all components of a path
+ *
+ * Any components of the path that do not exist are created. Errors are
+ * reported.
+ *
+ * @param blob FDT blob to write into
+ * @param in_path Path to process
+ * @return 0 if ok, -1 on error
+ */
+static int create_paths(void *blob, const char *in_path)
+{
+ const char *path = in_path;
+ const char *sep;
+ int node, offset = 0;
+
+ /* skip leading '/' */
+ while (*path == '/')
+ path++;
+
+ for (sep = path; *sep; path = sep + 1, offset = node) {
+ /* equivalent to strchrnul(), but it requires _GNU_SOURCE */
+ sep = strchr(path, '/');
+ if (!sep)
+ sep = path + strlen(path);
+
+ node = fdt_subnode_offset_namelen(blob, offset, path,
+ sep - path);
+ if (node == -FDT_ERR_NOTFOUND) {
+ node = fdt_add_subnode_namelen(blob, offset, path,
+ sep - path);
+ }
+ if (node < 0) {
+ report_error(path, sep - path, node);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/**
* Create a new node in the fdt.
*
* This will overwrite the node_name string. Any error is reported.
@@ -208,13 +250,19 @@ static int do_fdtput(struct display_info *disp, const char *filename,
* store them into the property.
*/
assert(arg_count >= 2);
+ if (disp->auto_path && create_paths(blob, *arg))
+ return -1;
if (encode_value(disp, arg + 2, arg_count - 2, &value, &len) ||
store_key_value(blob, *arg, arg[1], value, len))
ret = -1;
break;
case OPER_CREATE_NODE:
- for (; ret >= 0 && arg_count--; arg++)
- ret = create_node(blob, *arg);
+ for (; ret >= 0 && arg_count--; arg++) {
+ if (disp->auto_path)
+ ret = create_paths(blob, *arg);
+ else
+ ret = create_node(blob, *arg);
+ }
break;
}
if (ret >= 0)
@@ -234,6 +282,7 @@ static const char *usage_msg =
" fdtput -c <options> <dt file> [<node>...]\n"
"Options:\n"
"\t-c\t\tCreate nodes if they don't already exist\n"
+ "\t-p\t\tAutomatically create nodes as needed for the node path\n"
"\t-t <type>\tType of data\n"
"\t-v\t\tVerbose: display each value decoded from command line\n"
"\t-h\t\tPrint this help\n\n"
@@ -257,7 +306,7 @@ int main(int argc, char *argv[])
disp.size = -1;
disp.oper = OPER_WRITE_PROP;
for (;;) {
- int c = getopt(argc, argv, "cht:v");
+ int c = getopt(argc, argv, "chpt:v");
if (c == -1)
break;
@@ -277,7 +326,9 @@ int main(int argc, char *argv[])
case 'h':
case '?':
usage(NULL);
-
+ case 'p':
+ disp.auto_path = 1;
+ break;
case 't':
if (utilfdt_decode_type(optarg, &disp.type,
&disp.size))
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index acec2a5..b825b81 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -552,6 +552,19 @@ fdtput_tests () {
run_wrap_error_test $DTPUT $dtb -c /chosen
run_wrap_error_test $DTPUT $dtb -c /chosen/son
+ # Automatic node creation
+ run_wrap_test $DTPUT $dtb -cp /blackadder/the-second/turnip \
+ /blackadder/the-second/potato
+ run_fdtput_test 1000 $dtb /blackadder/the-second/turnip cost "" 1000
+ run_fdtput_test "fine wine" $dtb /blackadder/the-second/potato drink \
+ "-ts" "fine wine"
+ run_wrap_test $DTPUT $dtb -p /you/are/drunk/sir/winston slurp -ts twice
+ run_wrap_error_test $DTPUT $dtb -cp "$(cat $text $text)/longish"
+
+ # Allowed to create an existing node with -p
+ run_wrap_test $DTPUT $dtb -cp /chosen
+ run_wrap_test $DTPUT $dtb -cp /chosen/son
+
# TODO: Add tests for verbose mode?
}
--
1.7.7.3
^ permalink raw reply related [flat|nested] 4+ messages in thread