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authorTao Bao <tbao@google.com>2016-12-03 00:33:37 +0100
committerTao Bao <tbao@google.com>2016-12-06 00:31:52 +0100
commit7e31f421a514da09b90e46dbd642a5e9b16e0003 (patch)
treeb8491778e02b7058e3687a53ea187e473d36aaf2 /bootloader_message
parentMerge "recovery: Clean up get_args()." (diff)
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Diffstat (limited to 'bootloader_message')
-rw-r--r--bootloader_message/bootloader_message.cpp8
-rw-r--r--bootloader_message/include/bootloader_message/bootloader_message.h3
2 files changed, 9 insertions, 2 deletions
diff --git a/bootloader_message/bootloader_message.cpp b/bootloader_message/bootloader_message.cpp
index 9a5671843..294b1725d 100644
--- a/bootloader_message/bootloader_message.cpp
+++ b/bootloader_message/bootloader_message.cpp
@@ -164,7 +164,13 @@ bool clear_bootloader_message(std::string* err) {
}
bool write_bootloader_message(const std::vector<std::string>& options, std::string* err) {
- bootloader_message boot = {};
+ bootloader_message boot;
+ if (!read_bootloader_message(&boot, err)) {
+ return false;
+ }
+ // Zero out the entire fields.
+ memset(boot.command, 0, sizeof(boot.command));
+ memset(boot.recovery, 0, sizeof(boot.recovery));
strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery));
for (const auto& s : options) {
diff --git a/bootloader_message/include/bootloader_message/bootloader_message.h b/bootloader_message/include/bootloader_message/bootloader_message.h
index e45f42487..422e87d98 100644
--- a/bootloader_message/include/bootloader_message/bootloader_message.h
+++ b/bootloader_message/include/bootloader_message/bootloader_message.h
@@ -192,7 +192,8 @@ bool write_bootloader_message(const bootloader_message& boot, std::string* err);
bool write_bootloader_message_to(const bootloader_message& boot,
const std::string& misc_blk_device, std::string* err);
-// Write bootloader message (boots into recovery with the options) to BCB.
+// Write bootloader message (boots into recovery with the options) to BCB. Will
+// set command and recovery fields only.
bool write_bootloader_message(const std::vector<std::string>& options, std::string* err);
// Clear BCB.