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multirom.c
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/*
* This file is part of MultiROM.
*
* MultiROM is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MultiROM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MultiROM. If not, see <http://www.gnu.org/licenses/>.
*/
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <time.h>
#include <string.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/klog.h>
#include <sys/vfs.h>
#include <sys/statvfs.h>
#include <linux/loop.h>
#include <ctype.h>
#include <unistd.h>
#include <selinux/selinux.h>
#include <selinux/android.h>
// clone libbootimg to /system/extras/ from
// https://github.com/Tasssadar/libbootimg.git
#include <libbootimg.h>
#if LIBBOOTIMG_VERSION < 0x000200
#error "libbootimg version 0.2.0 or higher is required. Please update libbootimg."
#endif
#include "lib/containers.h"
#include "lib/framebuffer.h"
#include "lib/inject.h"
#include "lib/input.h"
#include "lib/log.h"
#include "lib/util.h"
#include "lib/mrom_data.h"
#include "multirom.h"
#include "multirom_ui.h"
#include "version.h"
#include "hooks.h"
#include "rom_quirks.h"
#include "kexec.h"
#ifdef MR_NO_KEXEC
#include "no_kexec.h"
#endif
#define REALDATA "/realdata"
#define BUSYBOX_BIN "busybox"
#define KEXEC_BIN "kexec"
#define NTFS_BIN "ntfs-3g"
#define EXFAT_BIN "exfat-fuse"
#define INTERNAL_ROM_NAME "Internal"
#define MAX_ROM_NAME_LEN 26
#define LAYOUT_VERSION "/data/.layout_version"
#define BATTERY_CAP "/sys/class/power_supply/battery/capacity"
#define DT_FSTAB_PATH "/proc/device-tree/firmware/android/fstab/"
#define EXEC_MASK (S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP)
#define EXEC_MASK_NEW (S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)
#define EXEC_MASK_RW (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
static char busybox_path[64] = { 0 };
static char kexec_path[64] = { 0 };
static char ntfs_path[64] = { 0 };
static char exfat_path[64] = { 0 };
static char partition_dir[64] = { 0 };
static char datamedia_dir[64] = { 0 };
static volatile int run_usb_refresh = 0;
static pthread_t usb_refresh_thread;
static pthread_mutex_t parts_mutex = PTHREAD_MUTEX_INITIALIZER;
static void (*usb_refresh_handler)(void) = NULL;
void copy_init_contents(DIR* d, char* dirpath, char* target, bool preserve_contexts, char** exclude_dirs);
bool LoadSplitPolicy();
void disable_dtb_fstab(char* partition) {
//return;
if (access("status", F_OK)) {
DIR* dir = opendir("/proc/device-tree/firmware/android");
char** exclude_dirs = NULL;
copy_dir_contents(dir, "/proc/device-tree/firmware/android", "/fakefsbat", exclude_dirs);
FILE* fp = fopen("status", "w");
fprintf(fp, "disabled");
fclose(fp);
}
char path[256];
sprintf(path, "/fakefsbat/fstab/%s/status", partition);
copy_file("/status", path);
}
void remove_dtb_fstab() {
mkdir("/dummy_fw", S_IFDIR);
DIR* dir = opendir("/proc/device-tree/firmware/android");
char** exclude_dirs = NULL;
copy_dir_contents(dir, "/proc/device-tree/firmware/android", "/fakefsbat", exclude_dirs);
if (!mount("/dummy_fw", "/fakefsbat", "ext4", MS_BIND, "discard,nomblk_io_submit")) {
INFO("dummy dtb node bind mounted in procfs\n");
} else {
ERROR("dummy dtb node bind mount failed! %s\n", strerror(errno));
}
}
int multirom_is_android10() {
if (!multirom_path_exists("/", "apex")) {
INFO("APEX folder found\n");
return 1;
}
if (!multirom_path_exists("/system", "system/bin/init")) {
INFO("system/bin/init found\n");
return 1;
}
char* initPath = "/main_init";
if (!multirom_path_exists("/", "/.backup/init")) {
initPath = "/.backup/init";
}
void *addr;
int initfd = open(initPath, O_RDWR);
INFO("open file %s result %d\n", initPath, initfd);
struct stat st;
lstat(initPath, &st);
size_t size = st.st_size;
addr = mmap(NULL, size, PROT_READ, MAP_SHARED, initfd, 0);
if (addr == -1) {
INFO("mmap error! %s\n", strerror(errno));
}
int contains = memmem(addr, size, "selinux_setup", 13) != NULL;
munmap(addr, size);
close(initfd);
INFO("init contains selinux_setup %d\n", contains);
return contains;
}
int mount_dtb_fstab(char* partition) {
int rc = -1;
char root_path [256] = {'\0'};
char device[256] = {'\0'};
char type[256] = {'\0'};
char mnt_flags[256] = {'\0'};
sprintf(root_path, "%s%s", DT_FSTAB_PATH, partition);
sprintf(device, "%s%s", root_path, "/dev");
sprintf(type, "%s%s", root_path, "/type");
sprintf(mnt_flags, "%s%s", root_path, "/mnt_flags");
if (!strcmp(partition, "system") && multirom_is_android10()) {
partition = "system_root";
mkdir_with_perms("/system_root", 0755, NULL, NULL);
if (access("/system/bin/init", F_OK)) {
mkdir_with_perms("/system/bin", 0755, NULL, NULL);
copy_file("/init", "/system/bin/init");
chmod("/system/bin/init", EXEC_MASK_NEW);
}
}
if (!(rc = mount(read_file(device), partition, read_file(type), MS_RDONLY, "barrier=1,discard"))) {
INFO("dtb %s mount successful\n", partition);
} else {
INFO("dtb %s mount failed %s\n", partition, strerror(errno));
}
return rc;
}
int multirom_find_base_dir(void)
{
int i, j;
char path[64];
struct stat info;
static const char *base_dirs[] = {
REALDATA"/media/0",
REALDATA"/media",
"/data/media/0",
"/data/media",
NULL,
};
static const char *mrom_dirs[] = {
"MultiROM/multirom",
"multirom",
NULL,
};
for(i = 0; base_dirs[i]; ++i) {
for (j = 0; mrom_dirs[j]; ++j) {
sprintf(path, "%s/%s", base_dirs[i], mrom_dirs[j]);
if(stat(path, &info) < 0)
continue;
mrom_set_dir(path);
strcpy(datamedia_dir, path);
strncpy(partition_dir, path, strchr(path, '/') - path);
sprintf(busybox_path, "%s/%s", path, BUSYBOX_BIN);
sprintf(kexec_path, "%s/%s", path, KEXEC_BIN);
sprintf(ntfs_path, "%s/%s", path, NTFS_BIN);
sprintf(exfat_path, "%s/%s", path, EXFAT_BIN);
chmod(kexec_path, 0755);
chmod(ntfs_path, 0755);
chmod(exfat_path, 0755);
return 0;
}
}
return -1;
}
#define MAX_LASTKMSG_LOGS 3
#define MAX_MROMKMSG_LOGS 5
enum
{
BACKUP_LAST_KMSG = 0,
BACKUP_EARLY_KLOG = 1,
BACKUP_LATE_KLOG = 2,
BACKUP_LAST_KEXEC = 3
};
static void set_mediarw_perms(const char *path)
{
chmod(path, 0666);
unsigned int media_rw_id = decode_uid("media_rw");
if(media_rw_id != -1U)
chown(path, (uid_t)media_rw_id, (gid_t)media_rw_id);
}
void multirom_kmsg_rename_logs(const char *path_logs_dir, const char *base_name, const int max_count)
{
DIR *dp = opendir(path_logs_dir);
if (!dp)
return;
int i;
char path_file_1[256];
char path_file_2[256];
char tmp[5];
char *pos = NULL;
struct dirent *de = NULL;
// delete last one (max_count), and rename the older ones
while((de = readdir(dp)))
{
if (strncmp(de->d_name, base_name, strlen(base_name)) != 0)
continue;
sprintf(path_file_1, "%s/%s", path_logs_dir, de->d_name);
sprintf(path_file_2, "%s/%s", path_logs_dir, de->d_name);
for (i = max_count; i >= 0; i--)
{
sprintf(tmp, "_%i_", i);
pos = strstr(path_file_2, tmp);
if (pos != NULL)
{
sprintf(tmp, "_%i_", i+1);
strncpy(pos, tmp, strlen(tmp));
if (i == max_count)
remove(path_file_1); //INFO("Deleting oldest log '%s' res=%d\n", path_file_1, remove(path_file_1));
else
rename(path_file_1, path_file_2); //INFO("Renaming older log '%s' to '%s' res=%d\n", path_file_1, path_file_2, rename(path_file_1, path_file_2));
}
}
}
closedir(dp);
}
void multirom_kmsg_logging(int kmsg_backup_type)
{
// types of logging:
// BACKUP_LAST_KMSG -> backup last_kmsg
// BACKUP_EARLY_KMSG -> current klog upon entering mrom
// BACKUP_LATE_KMSG -> current klog upon exiting mrom
// BACKUP_LAST_KEXEC -> last kexec log
char path_logs_dir[256];
char path_log_file[256];
static const char *kmsg_paths[] = {
"/proc/last_kmsg",
"/sys/fs/pstore/console-ramoops",
NULL,
};
// make the logs folder visible outside multirom folder
static const char log_dir_name[] = "multirom-klogs";
static const char ext[] = "txt";
// current date time
char datetime[] = "yyyy-mm-dd-HHMMSS";
time_t rawtime = time(NULL);
struct tm *timeinfo = localtime(&rawtime);
strftime(datetime, sizeof(datetime), "%Y-%m-%d-%H%M%S", timeinfo);
// filename: last_kmsg_n_2016-03-11-153600.txt
// filename: early_klg_0_2016-03-11-153600.txt (this is current klog upon enterting mrom)
// filename: mrom_klog_n_2016-03-11-153600.txt (this is current klog upon exiting mrom)
// filename: last_kexec_0_2016-03-11-153600.txt (same klog as pulled in multirom_load_kexec function)
char base_name[15];
if (kmsg_backup_type == BACKUP_LAST_KMSG)
strcpy(base_name, "last_kmsg");
else if (kmsg_backup_type == BACKUP_EARLY_KLOG)
strcpy(base_name, "early_klg");
else if (kmsg_backup_type == BACKUP_LATE_KLOG)
strcpy(base_name, "mrom_klog");
else if (kmsg_backup_type == BACKUP_LAST_KEXEC)
strcpy(base_name, "last_kexec");
else
return;
sprintf(path_logs_dir, "%s/%s", datamedia_dir, log_dir_name);
if (access(path_logs_dir, F_OK) < 0)
mkdir(path_logs_dir, 0666);
set_mediarw_perms(path_logs_dir);
if (kmsg_backup_type == BACKUP_LAST_KMSG) {
int i;
multirom_kmsg_rename_logs(path_logs_dir, base_name, MAX_LASTKMSG_LOGS);
sprintf(path_log_file, "%s/%s_%i_%s.%s", path_logs_dir, base_name, 0, datetime, ext);
for(i = 0; kmsg_paths[i]; ++i) {
if (access(kmsg_paths[i], R_OK) == 0) {
INFO("Backing up last kmsg '%s' to '%s' res=%d\n", kmsg_paths[i], path_log_file, copy_file(kmsg_paths[i], path_log_file));
break;
}
}
}
else {
multirom_kmsg_rename_logs(path_logs_dir, base_name, (kmsg_backup_type == BACKUP_LATE_KLOG) ? MAX_MROMKMSG_LOGS : 0);
sprintf(path_log_file, "%s/%s_%i_%s.%s", log_dir_name, base_name, 0, datetime, ext);
INFO("Backing up current klog to '%s' res=%d\n", path_log_file, multirom_copy_log(NULL, path_log_file));
}
set_mediarw_perms(path_log_file);
}
int multirom_get_current_oslevel(struct multirom_status *s)
{
int res = -1;
struct bootimg primary_img, secondary_img;
char* secondary_path = "/dev/block/bootdevice/by-name/boot";
INFO(NO_KEXEC_LOG_TEXT ": Going to check the bootimg in primary slot for slevel\n");
if (libbootimg_init_load(&secondary_img, secondary_path, LIBBOOTIMG_LOAD_ALL) < 0)
{
return -1;
}
char* secondary_os_version = libbootimg_get_osversion(&secondary_img.hdr, false);
char* secondary_os_level = libbootimg_get_oslevel(&secondary_img.hdr, false);
char* secondary_os_version_raw = libbootimg_get_osversion(&secondary_img.hdr, true);
char* secondary_os_level_raw = libbootimg_get_oslevel(&secondary_img.hdr, true);
memset(s->os_version, 0, sizeof(s->os_version));
memset(s->os_level, 0, sizeof(s->os_level));
memset(s->os_version_raw, 0, sizeof(s->os_version_raw));
memset(s->os_level_raw, 0, sizeof(s->os_level_raw));
memcpy(s->os_version, secondary_os_version, strlen(secondary_os_version));
memcpy(s->os_level, secondary_os_level, strlen(secondary_os_level));
memcpy(s->os_version_raw, secondary_os_version_raw, strlen(secondary_os_version_raw));
memcpy(s->os_level_raw, secondary_os_level_raw, strlen(secondary_os_level_raw));
return 0;
}
int multirom(const char *rom_to_boot, int always_reboot)
{
if(multirom_find_base_dir() == -1)
{
ERROR("Could not find multirom dir\n");
return -1;
}
struct multirom_status s;
memset(&s, 0, sizeof(struct multirom_status));
multirom_load_status(&s);
multirom_dump_status(&s);
multirom_get_current_oslevel(&s);
if (s.enable_kmsg_logging != 0)
{
multirom_kmsg_logging(BACKUP_LAST_KMSG);
multirom_kmsg_logging(BACKUP_EARLY_KLOG);
}
struct multirom_rom *to_boot = NULL;
int exit = (EXIT_REBOOT | EXIT_UMOUNT);
#ifdef MR_NO_KEXEC
// setup global variables here
nokexec_set_struct(&s);
// check if a partition mount failed, in which case multirom usually just boots internal
if (s.current_rom && s.current_rom->type == ROM_DEFAULT && nokexec_is_second_boot())
{
ERROR(NO_KEXEC_LOG_TEXT ": Something went wrong in mounting the needed partition, so falling back...");
nokexec()->selected_method = NO_KEXEC_BOOT_NORMAL;
s.is_second_boot = 0;
//ERROR(NO_KEXEC_LOG_TEXT ": to Internal\n"); s.auto_boot_type = AUTOBOOT_FORCE_CURRENT; // force reboot to Internal (this would be mrom default behaviour)
//ERROR(NO_KEXEC_LOG_TEXT ": to MultiROM GUI\n"); s.auto_boot_type = AUTOBOOT_NAME; // bring up the gui instead
ERROR(NO_KEXEC_LOG_TEXT ": to Recovery\n"); exit = (EXIT_REBOOT_RECOVERY | EXIT_UMOUNT); goto finish; // reboot to recovery
}
#endif
if(rom_to_boot != NULL)
{
struct multirom_rom *rom = NULL;
// Parse rom_to_boot should be: Name_of_ROM++uuid=xxxx (the '++uuid=xxxx' is optional but needed for external ROMs)
char * uuid_ptr = strstr(rom_to_boot, "++uuid=");
if(uuid_ptr == NULL)
{
rom = multirom_get_rom(&s, rom_to_boot, NULL);
}
else
{
char name[MAX_ROM_NAME_LEN + 1];
char part_uuid[36+4+1];
strncpy(name, rom_to_boot, uuid_ptr - rom_to_boot);
name[uuid_ptr - rom_to_boot] = 0;
strcpy(part_uuid, uuid_ptr + sizeof("++uuid=") - 1);
// Note: if the current ROM is on the same external partition as the one being booted
// then this function would already have been called in multirom_load_status
multirom_update_and_scan_for_external_roms(&s, part_uuid);
rom = multirom_get_rom(&s, name, part_uuid);
}
if(rom)
{
// Two possible scenarios: this ROM has kexec-hardboot and target
// ROM has boot image, so kexec it immediatelly or
// reboot and then proceed as usuall
if(((M(rom->type) & MASK_KEXEC) || rom->has_bootimg) && rom->type != ROM_DEFAULT && multirom_has_kexec())
{
to_boot = rom;
s.is_second_boot = 0;
INFO("Booting ROM %s...\n", rom_to_boot);
}
#ifdef MR_NO_KEXEC
else if(((M(rom->type) & MASK_KEXEC) || rom->has_bootimg) && rom->type != ROM_DEFAULT)
{
to_boot = rom;
s.is_second_boot = 0;
INFO(NO_KEXEC_LOG_TEXT " Booting ROM %s...\n", rom_to_boot);
}
#endif
else
{
s.current_rom = rom;
free(s.curr_rom_part);
s.curr_rom_part = NULL;
if(rom->partition)
s.curr_rom_part = strdup(rom->partition->uuid);
s.auto_boot_type |= AUTOBOOT_FORCE_CURRENT;
INFO("Setting ROM %s to force autoboot\n", rom_to_boot);
}
}
else
{
ERROR("ROM %s was not found, force autoboot was not set!\n", rom_to_boot);
exit = EXIT_UMOUNT;
}
}
else if(s.is_second_boot != 0 || (s.auto_boot_type & AUTOBOOT_FORCE_CURRENT))
{
ERROR("Skipping ROM selection, is_second_boot=%d, auto_boot_type=0x%x\n", s.is_second_boot, s.auto_boot_type);
to_boot = s.current_rom;
}
else
{
// just to cache the result so that it does not take
// any time when the UI is up
multirom_has_kexec();
switch(multirom_ui(&s, &to_boot))
{
case UI_EXIT_BOOT_ROM:
if (always_reboot) {
exit = (EXIT_REBOOT | EXIT_UMOUNT);
}
break;
case UI_EXIT_REBOOT:
exit = (EXIT_REBOOT | EXIT_UMOUNT);
break;
case UI_EXIT_REBOOT_RECOVERY:
exit = (EXIT_REBOOT_RECOVERY | EXIT_UMOUNT);
break;
case UI_EXIT_REBOOT_BOOTLOADER:
exit = (EXIT_REBOOT_BOOTLOADER | EXIT_UMOUNT);
break;
case UI_EXIT_SHUTDOWN:
exit = (EXIT_SHUTDOWN | EXIT_UMOUNT);
break;
}
}
if(to_boot)
{
s.auto_boot_type &= ~(AUTOBOOT_FORCE_CURRENT);
#ifdef MR_NO_KEXEC
#define MR_NO_KEXEC_ABORT { \
if(rom_to_boot == NULL) { \
ERROR(NO_KEXEC_LOG_TEXT ": ERROR occurred in the above, aborting to recovery\n"); \
exit = (EXIT_REBOOT_RECOVERY | EXIT_UMOUNT); \
} \
else \
{ \
ERROR(NO_KEXEC_LOG_TEXT ": ERROR occurred in the above, failed to boot '%s'\n", rom_to_boot); \
exit = EXIT_UMOUNT; \
} \
goto finish; \
}
if (s.is_second_boot != 0)
{
// Restore primary boot.img, and continue
if (nokexec_restore_primary_and_cleanup() < 0)
MR_NO_KEXEC_ABORT;
}
else
{
if ((to_boot->type != ROM_DEFAULT) && to_boot->has_bootimg && !s.use_primary_kernel)
{
// Flash secondary boot.img, and reboot
// note: a secondary boot.img in primary slot will trigger second_boot=1
// so we don't need to worry about that any more
if (nokexec_flash_secondary_bootimg(to_boot) < 0)
MR_NO_KEXEC_ABORT;
s.current_rom = to_boot;
free(s.curr_rom_part);
s.curr_rom_part = NULL;
if(to_boot->partition)
s.curr_rom_part = strdup(to_boot->partition->uuid);
exit = (EXIT_REBOOT | EXIT_UMOUNT);
goto finish;
} else if (s.use_primary_kernel) {
exit = 0;
}
}
#endif
if(rom_to_boot == NULL)
multirom_run_scripts("run-on-boot", to_boot);
exit = multirom_prepare_for_boot(&s, to_boot, always_reboot);
INFO("prepare for boot returned %d\n", exit);
// Something went wrong, exit/reboot
if(exit == -1)
{
INFO("SOMETHING HAS GONE WRONG !!");
if(rom_to_boot == NULL)
{
multirom_emergency_reboot();
exit = EXIT_REBOOT;
}
else
exit = EXIT_UMOUNT;
goto finish;
}
s.current_rom = to_boot;
free(s.curr_rom_part);
s.curr_rom_part = NULL;
if(to_boot->partition)
s.curr_rom_part = strdup(to_boot->partition->uuid);
if(s.is_second_boot == 0 && (M(to_boot->type) & MASK_ANDROID) && (exit & EXIT_KEXEC))
{
s.is_second_boot = 1;
// mrom_kexecd=1 param might be lost if kernel does not have kexec patches
ERROR(SECOND_BOOT_KMESG);
}
else
s.is_second_boot = 0;
}
finish:
#ifdef MR_NO_KEXEC
nokexec_free_struct();
#endif
if (s.enable_kmsg_logging != 0)
multirom_kmsg_logging(BACKUP_LATE_KLOG);
multirom_save_status(&s);
multirom_free_status(&s);
sync();
return exit;
}
int multirom_init_fb(int rotation)
{
if(fb_open(rotation) < 0)
{
ERROR("Failed to open framebuffer!\n");
return -1;
}
fb_fill(BLACK);
return 0;
}
void multirom_emergency_reboot(void)
{
char *klog;
fb_text_proto *p;
fb_img *t;
char *tail;
char *last_end;
int cur_y;
char path_log_file[64];
if(multirom_init_fb(0) < 0)
{
ERROR("Failed to init framebuffer in emergency reboot\n");
return;
}
fb_set_background(BLACK);
klog = multirom_get_klog();
t = fb_add_text(0, 120, WHITE, SIZE_NORMAL,
"An error occured.\nShutting down MultiROM to avoid data corruption.\n"
"Report this error to the developer!\nDebug info: /sdcard/multirom_log.txt\n\n"
"Press POWER button to reboot.");
t = fb_add_text(0, t->y + t->h + 100*DPI_MUL, GRAYISH, SIZE_SMALL, "Last lines from klog:");
fb_add_rect(0, t->y + t->h + 5*DPI_MUL, fb_width, 1, GRAYISH);
tail = klog+strlen(klog);
last_end = tail;
cur_y = fb_height;
const int start_y = (t->y + t->h + 2);
while(tail > klog)
{
--tail;
if(*tail == '\n')
{
p = fb_text_create(0, cur_y, GRAYISH, 4*4, NULL);
p->text = malloc(last_end - tail);
memcpy(p->text, tail + 1, last_end - (tail + 1));
p->text[last_end - (tail + 1)] = 0;
p->style = STYLE_MONOSPACE;
t = fb_text_finalize(p);
cur_y -= t->h;
t->y = cur_y;
last_end = tail;
if(cur_y < start_y)
{
fb_rm_text(t);
break;
}
}
}
fb_force_draw();
sprintf(path_log_file, "%s/multirom_log.txt", datamedia_dir);
multirom_copy_log(klog, path_log_file);
free(klog);
set_mediarw_perms(path_log_file);
// Wait for power key
start_input_thread();
while(wait_for_key() != KEY_POWER);
stop_input_thread();
fb_clear();
fb_close();
}
static int find_idx(int c)
{
static const char *capital = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
static const char *normal = "abcdefghijklmnopqrstuvwxyz";
char *p;
if((p = strchr(capital, c)))
return p - capital;
else if((p = strchr(normal, c)))
return p - normal;
return -128 + c;
}
static int compare_rom_names(const void *a, const void *b)
{
struct multirom_rom *rom_a = *((struct multirom_rom **)a);
struct multirom_rom *rom_b = *((struct multirom_rom **)b);
if(rom_a->type == ROM_DEFAULT)
return -1;
else if(rom_b->type == ROM_DEFAULT)
return 1;
char *itr_a = rom_a->name;
char *itr_b = rom_b->name;
while(1)
{
if(*itr_a == 0)
return -1;
else if(*itr_b == 0)
return 1;
if(*itr_a == *itr_b)
{
++itr_a;
++itr_b;
continue;
}
int idx_a = find_idx(*itr_a);
int idx_b = find_idx(*itr_b);
if(idx_a == idx_b)
{
++itr_a;
++itr_b;
continue;
}
return idx_a < idx_b ? -1 : 1;
}
return 0;
}
int multirom_apk_get_roms(struct multirom_status *s)
{
if(multirom_find_base_dir() == -1)
{
INFO("Could not find multirom dir\n");
return -1;
}
char current_rom[256] = { 0 };
s->curr_rom_part = NULL;
/* Read multirom.ini to find current_rom */
char arg[256];
sprintf(arg, "%s/multirom.ini", mrom_dir());
FILE *f = fopen(arg, "re");
if(f)
{
char line[1024];
char name[64];
char *pch;
while((fgets(line, sizeof(line), f)))
{
pch = strtok (line, "=\n");
if(!pch) continue;
strcpy(name, pch);
pch = strtok (NULL, "=\n");
if(!pch) continue;
strcpy(arg, pch);
if(strstr(name, "current_rom"))
strcpy(current_rom, arg);
else if(strstr(name, "curr_rom_part"))
s->curr_rom_part = strdup(arg);
}
INFO("current_rom='%s' curr_rom_part='%s'\n", current_rom, (s->curr_rom_part ? s->curr_rom_part : ""));
fclose(f);
}
else
{
INFO("Failed to open config file, setting current_rom to null!\n");
}
/* Get Internal ROM */
char roms_path[256];
sprintf(roms_path, "%s/roms/"INTERNAL_ROM_NAME, mrom_dir());
DIR *d = opendir(roms_path);
if(!d)
{
INFO("Failed to open Internal ROM's folder, creating one with ROM from internal memory...\n");
multirom_import_internal();
}
else
closedir(d);
/* Get Internal Storage ROMs */
sprintf(roms_path, "%s/roms", mrom_dir());
d = opendir(roms_path);
if(!d)
{
INFO("Failed to open roms dir!\n");
//return -1;
}
else
{
struct dirent *dr;
char path[256];
struct multirom_rom **add_roms = NULL;
while((dr = readdir(d)))
{
if(dr->d_name[0] == '.')
continue;
if(dr->d_type != DT_DIR)
continue;
if(strlen(dr->d_name) > MAX_ROM_NAME_LEN)
{
INFO("Skipping ROM %s, name is too long (max %d chars allowed)\n", dr->d_name, MAX_ROM_NAME_LEN);
continue;
}
//INFO("Adding ROM %s\n", dr->d_name);
struct multirom_rom *rom = malloc(sizeof(struct multirom_rom));
memset(rom, 0, sizeof(struct multirom_rom));
rom->id = multirom_generate_rom_id();
rom->name = strdup(dr->d_name);
snprintf(path, sizeof(path), "%s/%s", roms_path, rom->name);
rom->base_path = strdup(path);
rom->type = multirom_get_rom_type(rom);
snprintf(path, sizeof(path), "%s/boot.img", rom->base_path);
rom->has_bootimg = access(path, R_OK) == 0 ? 1 : 0;
multirom_find_rom_icon(rom);
list_add(&add_roms, rom);
}
closedir(d);
if(add_roms)
{
// sort roms
qsort(add_roms, list_item_count(add_roms), sizeof(struct multirom_rom*), compare_rom_names);
// add them to main list
list_swap(&add_roms, &s->roms);
}
}
/* Get External ROMs */
multirom_update_partitions(s);
int i;
pthread_mutex_lock(&parts_mutex);
for(i = 0; s->partitions && s->partitions[i]; ++i)
{
s->partitions[i]->keep_mounted = 1; // don't unmount on exit, the APK will need access to the folders
multirom_scan_partition_for_roms(s, s->partitions[i]);
}
pthread_mutex_unlock(&parts_mutex);
s->current_rom = multirom_get_rom(s, current_rom, s->curr_rom_part);
if(!s->current_rom)
{
INFO("Failed to find current rom (%s, part %s)!\n", current_rom, (s->curr_rom_part) ? s->curr_rom_part : "");
free(s->curr_rom_part);
s->curr_rom_part = NULL;
}
return 0;
}
int multirom_default_status(struct multirom_status *s)
{
s->is_second_boot = 0;
s->current_rom = NULL;
s->roms = NULL;
#ifdef MR_NO_KEXEC
s->no_kexec = MR_NO_KEXEC;
#endif
s->colors = 0;
s->brightness = MULTIROM_DEFAULT_BRIGHTNESS;
s->enable_adb = 0;
s->enable_kmsg_logging = 0;
s->rotation = MULTIROM_DEFAULT_ROTATION;
s->anim_duration_coef = 1.f;
s->use_primary_kernel = 0;
s->fstab = fstab_auto_load();
if(!s->fstab)
return -1;
char roms_path[256];
sprintf(roms_path, "%s/roms/"INTERNAL_ROM_NAME, mrom_dir());
DIR *d = opendir(roms_path);
if(!d)
{
ERROR("Failed to open Internal ROM's folder, creating one with ROM from internal memory...\n");
multirom_import_internal();
}
else
closedir(d);
sprintf(roms_path, "%s/roms", mrom_dir());
d = opendir(roms_path);
if(!d)
{
ERROR("Failed to open roms dir!\n");
return -1;
}
struct dirent *dr;
char path[256];
struct multirom_rom **add_roms = NULL;
while((dr = readdir(d)))
{
if(dr->d_name[0] == '.')
continue;
if(dr->d_type != DT_DIR)
continue;
if(strlen(dr->d_name) > MAX_ROM_NAME_LEN)
{
ERROR("Skipping ROM %s, name is too long (max %d chars allowed)\n", dr->d_name, MAX_ROM_NAME_LEN);
continue;
}
INFO("Adding ROM %s\n", dr->d_name);
struct multirom_rom *rom = malloc(sizeof(struct multirom_rom));
memset(rom, 0, sizeof(struct multirom_rom));
rom->id = multirom_generate_rom_id();
rom->name = strdup(dr->d_name);
snprintf(path, sizeof(path), "%s/%s", roms_path, rom->name);
rom->base_path = strdup(path);
rom->type = multirom_get_rom_type(rom);
snprintf(path, sizeof(path), "%s/boot.img", rom->base_path);
rom->has_bootimg = access(path, R_OK) == 0 ? 1 : 0;
multirom_find_rom_icon(rom);
list_add(&add_roms, rom);
}
closedir(d);
if(add_roms)
{
// sort roms
qsort(add_roms, list_item_count(add_roms), sizeof(struct multirom_rom*), compare_rom_names);