fastboot: implement "getvar all"
This commit implements "fastboot getvar all" listing
by iterating the existing dispatchers that don't require
parameters (as we pass NULL), uses fastboot multiresponse.
Signed-off-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20240105072212.6615-3-clamor95@gmail.com
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/drivers/fastboot/fb_getvar.c b/drivers/fastboot/fb_getvar.c
index 8cb8ffa..f65519c 100644
--- a/drivers/fastboot/fb_getvar.c
+++ b/drivers/fastboot/fb_getvar.c
@@ -29,53 +29,67 @@
static const struct {
const char *variable;
+ bool list;
void (*dispatch)(char *var_parameter, char *response);
} getvar_dispatch[] = {
{
.variable = "version",
- .dispatch = getvar_version
+ .dispatch = getvar_version,
+ .list = true,
}, {
.variable = "version-bootloader",
- .dispatch = getvar_version_bootloader
+ .dispatch = getvar_version_bootloader,
+ .list = true
}, {
.variable = "downloadsize",
- .dispatch = getvar_downloadsize
+ .dispatch = getvar_downloadsize,
+ .list = true
}, {
.variable = "max-download-size",
- .dispatch = getvar_downloadsize
+ .dispatch = getvar_downloadsize,
+ .list = true
}, {
.variable = "serialno",
- .dispatch = getvar_serialno
+ .dispatch = getvar_serialno,
+ .list = true
}, {
.variable = "version-baseband",
- .dispatch = getvar_version_baseband
+ .dispatch = getvar_version_baseband,
+ .list = true
}, {
.variable = "product",
- .dispatch = getvar_product
+ .dispatch = getvar_product,
+ .list = true
}, {
.variable = "platform",
- .dispatch = getvar_platform
+ .dispatch = getvar_platform,
+ .list = true
}, {
.variable = "current-slot",
- .dispatch = getvar_current_slot
+ .dispatch = getvar_current_slot,
+ .list = true
#if IS_ENABLED(CONFIG_FASTBOOT_FLASH)
}, {
.variable = "has-slot",
- .dispatch = getvar_has_slot
+ .dispatch = getvar_has_slot,
+ .list = false
#endif
#if IS_ENABLED(CONFIG_FASTBOOT_FLASH_MMC)
}, {
.variable = "partition-type",
- .dispatch = getvar_partition_type
+ .dispatch = getvar_partition_type,
+ .list = false
#endif
#if IS_ENABLED(CONFIG_FASTBOOT_FLASH)
}, {
.variable = "partition-size",
- .dispatch = getvar_partition_size
+ .dispatch = getvar_partition_size,
+ .list = false
#endif
}, {
.variable = "is-userspace",
- .dispatch = getvar_is_userspace
+ .dispatch = getvar_is_userspace,
+ .list = true
}
};
@@ -237,6 +251,40 @@
fastboot_okay("no", response);
}
+static int current_all_dispatch;
+void fastboot_getvar_all(char *response)
+{
+ /*
+ * Find a dispatch getvar that can be listed and send
+ * it as INFO until we reach the end.
+ */
+ while (current_all_dispatch < ARRAY_SIZE(getvar_dispatch)) {
+ if (!getvar_dispatch[current_all_dispatch].list) {
+ current_all_dispatch++;
+ continue;
+ }
+
+ char envstr[FASTBOOT_RESPONSE_LEN] = { 0 };
+
+ getvar_dispatch[current_all_dispatch].dispatch(NULL, envstr);
+
+ char *envstr_start = envstr;
+
+ if (!strncmp("OKAY", envstr, 4) || !strncmp("FAIL", envstr, 4))
+ envstr_start += 4;
+
+ fastboot_response("INFO", response, "%s: %s",
+ getvar_dispatch[current_all_dispatch].variable,
+ envstr_start);
+
+ current_all_dispatch++;
+ return;
+ }
+
+ fastboot_response("OKAY", response, NULL);
+ current_all_dispatch = 0;
+}
+
/**
* fastboot_getvar() - Writes variable indicated by cmd_parameter to response.
*
@@ -254,6 +302,9 @@
{
if (!cmd_parameter) {
fastboot_fail("missing var", response);
+ } else if (!strncmp("all", cmd_parameter, 3) && strlen(cmd_parameter) == 3) {
+ current_all_dispatch = 0;
+ fastboot_response(FASTBOOT_MULTIRESPONSE_START, response, NULL);
} else {
#define FASTBOOT_ENV_PREFIX "fastboot."
int i;