Add Fastboot support for flashing secondary images
Fastboot update and flashall will now flash secondary
images if provided, and if the --slot flag is not set
to 'all'. Also added flash-primary to preserve the
previous behavior, and flash-secondary to just flash
the secondary images.
Bug: 29278988
Change-Id: Ia870e4be55617c0eefa4e1381287f8cd14affe7e
diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index 7e3d212..455c668 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -49,6 +49,7 @@
#include <android-base/parseint.h>
#include <android-base/parsenetaddress.h>
+#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <sparse/sparse.h>
#include <ziparchive/zip_archive.h>
@@ -99,22 +100,41 @@
};
static struct {
- char img_name[13];
- char sig_name[13];
+ char img_name[17];
+ char sig_name[17];
char part_name[9];
bool is_optional;
+ bool is_secondary;
} images[] = {
- {"boot.img", "boot.sig", "boot", false},
- {"recovery.img", "recovery.sig", "recovery", true},
- {"system.img", "system.sig", "system", false},
- {"vendor.img", "vendor.sig", "vendor", true},
+ {"boot.img", "boot.sig", "boot", false, false},
+ {"boot_other.img", "boot.sig", "boot", true, true},
+ {"recovery.img", "recovery.sig", "recovery", true, false},
+ {"system.img", "system.sig", "system", false, false},
+ {"system_other.img", "system.sig", "system", true, true},
+ {"vendor.img", "vendor.sig", "vendor", true, false},
+ {"vendor_other.img", "vendor.sig", "vendor", true, true},
};
-static char* find_item(const char* item, const char* product) {
+static std::string find_item_given_name(const char* img_name, const char* product) {
char *dir;
- const char *fn;
char path[PATH_MAX + 128];
+ if(product) {
+ get_my_path(path);
+ return android::base::StringPrintf("../../../target/product/%s/%s", product, img_name);
+ }
+
+ dir = getenv("ANDROID_PRODUCT_OUT");
+ if((dir == 0) || (dir[0] == 0)) {
+ die("neither -p product specified nor ANDROID_PRODUCT_OUT set");
+ }
+
+ return android::base::StringPrintf("%s/%s", dir, img_name);
+}
+
+std::string find_item(const char* item, const char* product) {
+ const char *fn;
+
if(!strcmp(item,"boot")) {
fn = "boot.img";
} else if(!strcmp(item,"recovery")) {
@@ -131,24 +151,10 @@
fn = "android-info.txt";
} else {
fprintf(stderr,"unknown partition '%s'\n", item);
- return 0;
+ return "";
}
- if(product) {
- get_my_path(path);
- sprintf(path + strlen(path),
- "../../../target/product/%s/%s", product, fn);
- return strdup(path);
- }
-
- dir = getenv("ANDROID_PRODUCT_OUT");
- if((dir == 0) || (dir[0] == 0)) {
- die("neither -p product specified nor ANDROID_PRODUCT_OUT set");
- return 0;
- }
-
- sprintf(path, "%s/%s", dir, fn);
- return strdup(path);
+ return find_item_given_name(fn, product);
}
static int64_t get_file_size(int fd) {
@@ -319,6 +325,11 @@
" if found -- recovery. If the device\n"
" supports slots, the slot that has\n"
" been flashed to is set as active.\n"
+ " Secondary images may be flashed to\n"
+ " an inactive slot.\n"
+ " flash-primary Same as flashall, but do not flash\n"
+ " secondary images.\n"
+ " flash-secondary Only flashes the secondary images.\n"
" flash <partition> [ <filename> ] Write a file to a flash partition.\n"
" flashing lock Locks the device. Prevents flashing.\n"
" flashing unlock Unlocks the device. Allows flashing\n"
@@ -867,8 +878,12 @@
return suffixes;
}
+static bool supports_AB(Transport* transport) {
+ return !get_suffixes(transport).empty();
+}
+
// Given a current slot, this returns what the 'other' slot is.
-static std::string get_other_slot(Transport* transport, std::string& current_slot) {
+static std::string get_other_slot(Transport* transport, const std::string& current_slot) {
std::vector<std::string> suffixes = get_suffixes(transport);
if (!suffixes.empty()) {
@@ -881,6 +896,12 @@
return "";
}
+static std::string get_other_slot(Transport* transport) {
+ std::string current_slot;
+ fb_getvar(transport, "current-slot", ¤t_slot);
+ return get_other_slot(transport, current_slot);
+}
+
static std::string verify_slot(Transport* transport, const char *slot, bool allow_all) {
if (strcmp(slot, "all") == 0) {
if (allow_all) {
@@ -1003,9 +1024,9 @@
// Sets slot_override as the active slot. If slot_override is blank,
// set current slot as active instead. This clears slot-unbootable.
-static void set_active(Transport* transport, const char* slot_override) {
- if (slot_override && slot_override[0]) {
- fb_set_active(slot_override);
+static void set_active(Transport* transport, const std::string& slot_override) {
+ if (slot_override != "") {
+ fb_set_active(slot_override.c_str());
} else {
std::string current_slot;
if (fb_getvar(transport, "current-slot", ¤t_slot)) {
@@ -1015,7 +1036,7 @@
}
}
-static void do_update(Transport* transport, const char* filename, const char* slot_override, bool erase_first) {
+static void do_update(Transport* transport, const char* filename, const std::string& slot_override, bool erase_first) {
queue_info_dump();
fb_queue_query_save("product", cur_product, sizeof(cur_product));
@@ -1036,7 +1057,31 @@
setup_requirements(reinterpret_cast<char*>(data), sz);
+ std::string secondary;
+ bool update_secondary = slot_override != "all";
+ if (update_secondary) {
+ if (slot_override != "") {
+ secondary = get_other_slot(transport, slot_override);
+ } else {
+ secondary = get_other_slot(transport);
+ }
+ if (secondary == "") {
+ if (supports_AB(transport)) {
+ fprintf(stderr, "Warning: Could not determine slot for secondary images. Ignoring.\n");
+ }
+ update_secondary = false;
+ }
+ }
for (size_t i = 0; i < ARRAY_SIZE(images); ++i) {
+ const char* slot = slot_override.c_str();
+ if (images[i].is_secondary) {
+ if (update_secondary) {
+ slot = secondary.c_str();
+ } else {
+ continue;
+ }
+ }
+
int fd = unzip_to_file(zip, images[i].img_name);
if (fd == -1) {
if (images[i].is_optional) {
@@ -1060,49 +1105,69 @@
* program exits.
*/
};
- do_for_partitions(transport, images[i].part_name, slot_override, update, false);
+ do_for_partitions(transport, images[i].part_name, slot, update, false);
}
CloseArchive(zip);
set_active(transport, slot_override);
}
-static void do_send_signature(char* fn) {
- char* xtn = strrchr(fn, '.');
- if (!xtn) return;
+static void do_send_signature(const std::string& fn) {
+ std::size_t extension_loc = fn.find(".img");
+ if (extension_loc == std::string::npos) return;
- if (strcmp(xtn, ".img")) return;
-
- strcpy(xtn, ".sig");
+ std::string fs_sig = fn.substr(0, extension_loc) + ".sig";
int64_t sz;
- void* data = load_file(fn, &sz);
- strcpy(xtn, ".img");
+ void* data = load_file(fs_sig.c_str(), &sz);
if (data == nullptr) return;
fb_queue_download("signature", data, sz);
fb_queue_command("signature", "installing signature");
}
-static void do_flashall(Transport* transport, const char* slot_override, int erase_first) {
- queue_info_dump();
+static void do_flashall(Transport* transport, const std::string& slot_override, int erase_first, bool flash_primary, bool flash_secondary) {
+ std::string fname;
+ if (flash_primary) {
+ queue_info_dump();
- fb_queue_query_save("product", cur_product, sizeof(cur_product));
+ fb_queue_query_save("product", cur_product, sizeof(cur_product));
- char* fname = find_item("info", product);
- if (fname == nullptr) die("cannot find android-info.txt");
+ fname = find_item("info", product);
+ if (fname == "") die("cannot find android-info.txt");
- int64_t sz;
- void* data = load_file(fname, &sz);
- if (data == nullptr) die("could not load android-info.txt: %s", strerror(errno));
+ int64_t sz;
+ void* data = load_file(fname.c_str(), &sz);
+ if (data == nullptr) die("could not load android-info.txt: %s", strerror(errno));
- setup_requirements(reinterpret_cast<char*>(data), sz);
+ setup_requirements(reinterpret_cast<char*>(data), sz);
+ }
+ std::string secondary;
+ if (flash_secondary) {
+ if (slot_override != "") {
+ secondary = get_other_slot(transport, slot_override);
+ } else {
+ secondary = get_other_slot(transport);
+ }
+ if (secondary == "") {
+ if (supports_AB(transport)) {
+ fprintf(stderr, "Warning: Could not determine slot for secondary images. Ignoring.\n");
+ }
+ flash_secondary = false;
+ }
+ }
for (size_t i = 0; i < ARRAY_SIZE(images); i++) {
- fname = find_item(images[i].part_name, product);
+ const char* slot = NULL;
+ if (images[i].is_secondary) {
+ if (flash_secondary) slot = secondary.c_str();
+ } else {
+ if (flash_primary) slot = slot_override.c_str();
+ }
+ if (!slot) continue;
+ fname = find_item_given_name(images[i].img_name, product);
fastboot_buffer buf;
- if (load_buf(transport, fname, &buf)) {
- if (images[i].is_optional)
- continue;
+ if (load_buf(transport, fname.c_str(), &buf)) {
+ if (images[i].is_optional) continue;
die("could not load %s\n", images[i].img_name);
}
@@ -1113,10 +1178,10 @@
}
flash_buf(partition.c_str(), &buf);
};
- do_for_partitions(transport, images[i].part_name, slot_override, flashall, false);
+ do_for_partitions(transport, images[i].part_name, slot, flashall, false);
}
- set_active(transport, slot_override);
+ if (flash_primary) set_active(transport, slot_override);
}
#define skip(n) do { argc -= (n); argv += (n); } while (0)
@@ -1443,10 +1508,8 @@
return 1;
}
- if (slot_override != "")
- slot_override = verify_slot(transport, slot_override.c_str());
- if (next_active != "")
- next_active = verify_slot(transport, next_active.c_str(), false);
+ if (slot_override != "") slot_override = verify_slot(transport, slot_override.c_str());
+ if (next_active != "") next_active = verify_slot(transport, next_active.c_str(), false);
if (wants_set_active) {
if (next_active == "") {
@@ -1567,7 +1630,7 @@
fb_queue_command("boot", "booting");
} else if(!strcmp(*argv, "flash")) {
char *pname = argv[1];
- char *fname = 0;
+ std::string fname;
require(2);
if (argc > 2) {
fname = argv[2];
@@ -1576,13 +1639,13 @@
fname = find_item(pname, product);
skip(2);
}
- if (fname == 0) die("cannot determine image filename for '%s'", pname);
+ if (fname == "") die("cannot determine image filename for '%s'", pname);
auto flash = [&](const std::string &partition) {
if (erase_first && needs_erase(transport, partition.c_str())) {
fb_queue_erase(partition.c_str());
}
- do_flash(transport, partition.c_str(), fname);
+ do_flash(transport, partition.c_str(), fname.c_str());
};
do_for_partitions(transport, pname, slot_override.c_str(), flash, true);
} else if(!strcmp(*argv, "flash:raw")) {
@@ -1607,14 +1670,27 @@
do_for_partitions(transport, argv[1], slot_override.c_str(), flashraw, true);
} else if(!strcmp(*argv, "flashall")) {
skip(1);
- do_flashall(transport, slot_override.c_str(), erase_first);
+ if (slot_override == "all") {
+ fprintf(stderr, "Warning: slot set to 'all'. Secondary slots will not be flashed.");
+ do_flashall(transport, slot_override, erase_first, true, false);
+ } else {
+ do_flashall(transport, slot_override, erase_first, true, true);
+ }
+ wants_reboot = true;
+ } else if(!strcmp(*argv, "flash-primary")) {
+ skip(1);
+ do_flashall(transport, slot_override, erase_first, true, false);
+ wants_reboot = true;
+ } else if(!strcmp(*argv, "flash-secondary")) {
+ skip(1);
+ do_flashall(transport, slot_override, erase_first, false, true);
wants_reboot = true;
} else if(!strcmp(*argv, "update")) {
if (argc > 1) {
- do_update(transport, argv[1], slot_override.c_str(), erase_first);
+ do_update(transport, argv[1], slot_override, erase_first);
skip(2);
} else {
- do_update(transport, "update.zip", slot_override.c_str(), erase_first);
+ do_update(transport, "update.zip", slot_override, erase_first);
skip(1);
}
wants_reboot = 1;