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-rw-r--r--recovery.cpp155
1 files changed, 75 insertions, 80 deletions
diff --git a/recovery.cpp b/recovery.cpp
index 122b89d0b..6f62ff17c 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -53,6 +53,7 @@
#include <healthd/BatteryMonitor.h>
#include <private/android_logger.h> /* private pmsg functions */
#include <private/android_filesystem_config.h> /* for AID_SYSTEM */
+#include <selinux/android.h>
#include <selinux/label.h>
#include <selinux/selinux.h>
#include <ziparchive/zip_archive.h>
@@ -178,19 +179,19 @@ struct selabel_handle* sehandle;
* 7b. the user reboots (pulling the battery, etc) into the main system
*/
-// open a given path, mounting partitions as necessary
-FILE* fopen_path(const char *path, const char *mode) {
- if (ensure_path_mounted(path) != 0) {
- LOG(ERROR) << "Can't mount " << path;
- return NULL;
- }
-
- // When writing, try to create the containing directory, if necessary.
- // Use generous permissions, the system (init.rc) will reset them.
- if (strchr("wa", mode[0])) dirCreateHierarchy(path, 0777, NULL, 1, sehandle);
+// Open a given path, mounting partitions as necessary.
+FILE* fopen_path(const char* path, const char* mode) {
+ if (ensure_path_mounted(path) != 0) {
+ LOG(ERROR) << "Can't mount " << path;
+ return nullptr;
+ }
- FILE *fp = fopen(path, mode);
- return fp;
+ // When writing, try to create the containing directory, if necessary. Use generous permissions,
+ // the system (init.rc) will reset them.
+ if (strchr("wa", mode[0])) {
+ mkdir_recursively(path, 0777, true, sehandle);
+ }
+ return fopen(path, mode);
}
// close a file, log an error if the error indicator is set
@@ -249,7 +250,7 @@ static void redirect_stdio(const char* filename) {
auto start = std::chrono::steady_clock::now();
// Child logger to actually write to the log file.
- FILE* log_fp = fopen(filename, "a");
+ FILE* log_fp = fopen(filename, "ae");
if (log_fp == nullptr) {
PLOG(ERROR) << "fopen \"" << filename << "\" failed";
close(pipefd[0]);
@@ -418,27 +419,27 @@ static void copy_log_file_to_pmsg(const char* source, const char* destination) {
static off_t tmplog_offset = 0;
static void copy_log_file(const char* source, const char* destination, bool append) {
- FILE* dest_fp = fopen_path(destination, append ? "a" : "w");
- if (dest_fp == nullptr) {
- PLOG(ERROR) << "Can't open " << destination;
- } else {
- FILE* source_fp = fopen(source, "r");
- if (source_fp != nullptr) {
- if (append) {
- fseeko(source_fp, tmplog_offset, SEEK_SET); // Since last write
- }
- char buf[4096];
- size_t bytes;
- while ((bytes = fread(buf, 1, sizeof(buf), source_fp)) != 0) {
- fwrite(buf, 1, bytes, dest_fp);
- }
- if (append) {
- tmplog_offset = ftello(source_fp);
- }
- check_and_fclose(source_fp, source);
- }
- check_and_fclose(dest_fp, destination);
+ FILE* dest_fp = fopen_path(destination, append ? "ae" : "we");
+ if (dest_fp == nullptr) {
+ PLOG(ERROR) << "Can't open " << destination;
+ } else {
+ FILE* source_fp = fopen(source, "re");
+ if (source_fp != nullptr) {
+ if (append) {
+ fseeko(source_fp, tmplog_offset, SEEK_SET); // Since last write
+ }
+ char buf[4096];
+ size_t bytes;
+ while ((bytes = fread(buf, 1, sizeof(buf), source_fp)) != 0) {
+ fwrite(buf, 1, bytes, dest_fp);
+ }
+ if (append) {
+ tmplog_offset = ftello(source_fp);
+ }
+ check_and_fclose(source_fp, source);
}
+ check_and_fclose(dest_fp, destination);
+ }
}
static void copy_logs() {
@@ -477,40 +478,38 @@ static void copy_logs() {
sync();
}
-// clear the recovery command and prepare to boot a (hopefully working) system,
+// Clear the recovery command and prepare to boot a (hopefully working) system,
// copy our log file to cache as well (for the system to read). This function is
// idempotent: call it as many times as you like.
static void finish_recovery() {
- // Save the locale to cache, so if recovery is next started up
- // without a --locale argument (eg, directly from the bootloader)
- // it will use the last-known locale.
- if (!locale.empty() && has_cache) {
- LOG(INFO) << "Saving locale \"" << locale << "\"";
-
- FILE* fp = fopen_path(LOCALE_FILE, "w");
- if (!android::base::WriteStringToFd(locale, fileno(fp))) {
- PLOG(ERROR) << "Failed to save locale to " << LOCALE_FILE;
- }
- check_and_fclose(fp, LOCALE_FILE);
+ // Save the locale to cache, so if recovery is next started up without a '--locale' argument
+ // (e.g., directly from the bootloader) it will use the last-known locale.
+ if (!locale.empty() && has_cache) {
+ LOG(INFO) << "Saving locale \"" << locale << "\"";
+ if (ensure_path_mounted(LOCALE_FILE) != 0) {
+ LOG(ERROR) << "Failed to mount " << LOCALE_FILE;
+ } else if (!android::base::WriteStringToFile(locale, LOCALE_FILE)) {
+ PLOG(ERROR) << "Failed to save locale to " << LOCALE_FILE;
}
+ }
- copy_logs();
+ copy_logs();
- // Reset to normal system boot so recovery won't cycle indefinitely.
- std::string err;
- if (!clear_bootloader_message(&err)) {
- LOG(ERROR) << "Failed to clear BCB message: " << err;
- }
+ // Reset to normal system boot so recovery won't cycle indefinitely.
+ std::string err;
+ if (!clear_bootloader_message(&err)) {
+ LOG(ERROR) << "Failed to clear BCB message: " << err;
+ }
- // Remove the command file, so recovery won't repeat indefinitely.
- if (has_cache) {
- if (ensure_path_mounted(COMMAND_FILE) != 0 || (unlink(COMMAND_FILE) && errno != ENOENT)) {
- LOG(WARNING) << "Can't unlink " << COMMAND_FILE;
- }
- ensure_path_unmounted(CACHE_ROOT);
+ // Remove the command file, so recovery won't repeat indefinitely.
+ if (has_cache) {
+ if (ensure_path_mounted(COMMAND_FILE) != 0 || (unlink(COMMAND_FILE) && errno != ENOENT)) {
+ LOG(WARNING) << "Can't unlink " << COMMAND_FILE;
}
+ ensure_path_unmounted(CACHE_ROOT);
+ }
- sync(); // For good measure.
+ sync(); // For good measure.
}
struct saved_log_file {
@@ -551,7 +550,7 @@ static bool erase_volume(const char* volume) {
}
std::string data(sb.st_size, '\0');
- FILE* f = fopen(path.c_str(), "rb");
+ FILE* f = fopen(path.c_str(), "rbe");
fread(&data[0], 1, data.size(), f);
fclose(f);
@@ -579,7 +578,7 @@ static bool erase_volume(const char* volume) {
ui->Print("Failed to make convert_fbe dir %s\n", strerror(errno));
return true;
}
- FILE* f = fopen(CONVERT_FBE_FILE, "wb");
+ FILE* f = fopen(CONVERT_FBE_FILE, "wbe");
if (!f) {
ui->Print("Failed to convert to file encryption %s\n", strerror(errno));
return true;
@@ -595,7 +594,7 @@ static bool erase_volume(const char* volume) {
if (is_cache) {
// Re-create the log dir and write back the log entries.
if (ensure_path_mounted(CACHE_LOG_DIR) == 0 &&
- dirCreateHierarchy(CACHE_LOG_DIR, 0777, nullptr, false, sehandle) == 0) {
+ mkdir_recursively(CACHE_LOG_DIR, 0777, false, sehandle) == 0) {
for (const auto& log : log_files) {
if (!android::base::WriteStringToFile(log.data, log.name, log.sb.st_mode, log.sb.st_uid,
log.sb.st_gid)) {
@@ -759,12 +758,13 @@ static bool wipe_data(Device* device) {
}
static bool prompt_and_wipe_data(Device* device) {
+ // Use a single string and let ScreenRecoveryUI handles the wrapping.
const char* const headers[] = {
- "Can't load Android system. Your data may be corrupt.",
- "If you continue to get this message, you may need to",
- "perform a factory data reset and erase all user data",
+ "Can't load Android system. Your data may be corrupt. "
+ "If you continue to get this message, you may need to "
+ "perform a factory data reset and erase all user data "
"stored on this device.",
- NULL
+ nullptr
};
const char* const items[] = {
"Try again",
@@ -1481,12 +1481,8 @@ int main(int argc, char **argv) {
ui->SetBackground(RecoveryUI::NONE);
if (show_text) ui->ShowText(true);
- struct selinux_opt seopts[] = {
- { SELABEL_OPT_PATH, "/file_contexts" }
- };
-
- sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
-
+ sehandle = selinux_android_file_context_handle();
+ selinux_android_set_sehandle(sehandle);
if (!sehandle) {
ui->Print("Warning: No file_contexts\n");
}
@@ -1596,15 +1592,14 @@ int main(int argc, char **argv) {
ui->Print("Rebooting automatically.\n");
}
} else if (!just_exit) {
- status = INSTALL_NONE; // No command specified
- ui->SetBackground(RecoveryUI::NO_COMMAND);
-
- // http://b/17489952
- // If this is an eng or userdebug build, automatically turn on the
- // text display if no command is specified.
- if (is_ro_debuggable()) {
- ui->ShowText(true);
- }
+ // If this is an eng or userdebug build, automatically turn on the text display if no command
+ // is specified. Note that this should be called before setting the background to avoid
+ // flickering the background image.
+ if (is_ro_debuggable()) {
+ ui->ShowText(true);
+ }
+ status = INSTALL_NONE; // No command specified
+ ui->SetBackground(RecoveryUI::NO_COMMAND);
}
if (status == INSTALL_ERROR || status == INSTALL_CORRUPT) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 22:23:26 +0100