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Support EMUI 9.0

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topjohnwu 2018-12-24 21:36:37 +08:00
parent 01344c451f
commit 3c6c0e6700
2 changed files with 19 additions and 10 deletions
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21
native/jni/misc/init.cpp
View File

@ -54,7 +54,7 @@ static bool mnt_system = false;
static bool mnt_vendor = false;
struct cmdline {
bool skip_initramfs;
bool early_boot;
char slot[3];
char dt_dir[128];
};
@ -75,6 +75,10 @@ static void parse_cmdline(struct cmdline *cmd) {
int fd = open("/proc/cmdline", O_RDONLY | O_CLOEXEC);
cmdline[read(fd, cmdline, sizeof(cmdline))] = '\0';
close(fd);
bool skip_initramfs = false, kirin = false;
int enter_recovery = 0;
for (char *tok = strtok(cmdline, " "); tok; tok = strtok(nullptr, " ")) {
if (strncmp(tok, "androidboot.slot_suffix", 23) == 0) {
sscanf(tok, "androidboot.slot_suffix=%s", cmd->slot);
@ -82,16 +86,21 @@ static void parse_cmdline(struct cmdline *cmd) {
cmd->slot[0] = '_';
sscanf(tok, "androidboot.slot=%c", cmd->slot + 1);
} else if (strcmp(tok, "skip_initramfs") == 0) {
cmd->skip_initramfs = true;
skip_initramfs = true;
} else if (strncmp(tok, "androidboot.android_dt_dir", 26) == 0) {
sscanf(tok, "androidboot.android_dt_dir=%s", cmd->dt_dir);
} else if (strncmp(tok, "enter_recovery", 14) == 0) {
sscanf(tok, "enter_recovery=%d", &enter_recovery);
} else if (strncmp(tok, "androidboot.hardware", 20) == 0) {
kirin = strstr(tok, "kirin") != nullptr;
}
}
cmd->early_boot = skip_initramfs || (kirin && enter_recovery);
if (cmd->dt_dir[0] == '\0')
strcpy(cmd->dt_dir, DEFAULT_DT_DIR);
LOGD("cmdline: skip_initramfs[%d] slot[%s] dt_dir[%s]\n", cmd->skip_initramfs, cmd->slot, cmd->dt_dir);
LOGD("cmdline: early_boot[%d] slot[%s] dt_dir[%s]\n", cmd->early_boot, cmd->slot, cmd->dt_dir);
}
static void parse_device(struct device *dev, const char *uevent) {
@ -377,7 +386,7 @@ int main(int argc, char *argv[]) {
root = open("/", O_RDONLY | O_CLOEXEC);
if (cmd.skip_initramfs) {
if (cmd.early_boot) {
// Clear rootfs
const char *excl[] = { "overlay", ".backup", "proc", "sys", "init.bak", nullptr };
excl_list = excl;
@ -389,7 +398,7 @@ int main(int argc, char *argv[]) {
}
// Do not go further if system_root device is booting as recovery
if (!cmd.skip_initramfs && access("/sbin/recovery", F_OK) == 0) {
if (!cmd.early_boot && access("/sbin/recovery", F_OK) == 0) {
// Remove Magisk traces
rm_rf("/.backup");
exec_init(argv);
@ -402,7 +411,7 @@ int main(int argc, char *argv[]) {
struct device dev;
char partname[32];
if (cmd.skip_initramfs) {
if (cmd.early_boot) {
sprintf(partname, "system%s", cmd.slot);
setup_block(&dev, partname);
xmkdir("/system_root", 0755);

8
scripts/util_functions.sh
View File

@ -68,8 +68,8 @@ find_block() {
for uevent in /sys/dev/block/*/uevent; do
local DEVNAME=`grep_prop DEVNAME $uevent`
local PARTNAME=`grep_prop PARTNAME $uevent`
for p in "$@"; do
if [ "`toupper $p`" = "`toupper $PARTNAME`" ]; then
for BLOCK in "$@"; do
if [ "`toupper $BLOCK`" = "`toupper $PARTNAME`" ]; then
echo /dev/block/$DEVNAME
return 0
fi
@ -185,9 +185,9 @@ run_migrations() {
find_boot_image() {
BOOTIMAGE=
if [ ! -z $SLOT ]; then
BOOTIMAGE=`find_block boot$SLOT ramdisk$SLOT`
BOOTIMAGE=`find_block ramdisk$SLOT recovery_ramdisk$SLOT boot$SLOT`
else
BOOTIMAGE=`find_block boot ramdisk boot_a kern-a android_boot kernel lnx bootimg`
BOOTIMAGE=`find_block ramdisk recovery_ramdisk boot boot_a kern-a android_boot kernel lnx bootimg`
fi
if [ -z $BOOTIMAGE ]; then
# Lets see what fstabs tells me