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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::a2d; envelope-from=danielhb413@gmail.com; helo=mail-vk1-xa2d.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1659694958019100001 Content-Type: text/plain; charset="utf-8" To support printing string properties in 'info fdt' we need to determine whether a void data might contain a string. We do that by casting the void data to a string array and: - check if the array finishes with a null character - check if all characters are printable If both conditions are met, we'll consider it to be a string data type and print it accordingly. After this change, 'info fdt' is now able to print string properties. Here's an example with the ARM 'virt' machine: (qemu) info fdt /chosen chosen { stdout-path =3D '/pl011@9000000' rng-seed; kaslr-seed; } Signed-off-by: Daniel Henrique Barboza --- softmmu/device_tree.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/softmmu/device_tree.c b/softmmu/device_tree.c index 3fb07b537f..8691c3ccc0 100644 --- a/softmmu/device_tree.c +++ b/softmmu/device_tree.c @@ -663,6 +663,24 @@ void qemu_fdt_qmp_dumpdtb(const char *filename, Error = **errp) error_setg(errp, "Error when saving machine FDT to file %s", filename); } =20 +static bool fdt_prop_is_string(const void *data, int size) +{ + const char *str =3D data; + int i; + + if (size <=3D 0 || str[size - 1] !=3D '\0') { + return false; + } + + for (i =3D 0; i < size - 1; i++) { + if (!g_ascii_isprint(str[i])) { + return false; + } + } + + return true; +} + static void fdt_format_node(GString *buf, int node, int depth) { const struct fdt_property *prop =3D NULL; @@ -681,7 +699,12 @@ static void fdt_format_node(GString *buf, int node, in= t depth) prop =3D fdt_get_property_by_offset(fdt, property, &prop_size); propname =3D fdt_string(fdt, fdt32_to_cpu(prop->nameoff)); =20 - g_string_append_printf(buf, "%*s%s;\n", padding, "", propname); + if (fdt_prop_is_string(prop->data, prop_size)) { + g_string_append_printf(buf, "%*s%s =3D '%s'\n", + padding, "", propname, prop->data); + } else { + g_string_append_printf(buf, "%*s%s;\n", padding, "", propname); + } } =20 padding -=3D 4; --=20 2.36.1