void stage1(void) {
DIR *dp;
struct dirent *dt;
calculate_mem();
fprintf_stdout("* Creating Mybox filesystem (%d kB) on shared memory...\n",RAMSIZE);
xsystem("mount -t tmpfs -o \"rw,size=%dk\" virtual /ramd",RAMSIZE);
chmod("/ramd",S_IREAD | S_IWRITE | S_IEXEC);
chdir("/ramd");
if((dp=opendir("/")) == NULL) {
perror("opendir");
exit(1);
}
while((dt=readdir(dp))!=NULL) {
if(!strcmp(dt->d_name,".") || !strcmp(dt->d_name,"..") ||
!strcmp(dt->d_name,"lost+found") ||
!strcmp(dt->d_name,"ramd") ||
!strcmp(dt->d_name,"proc") ||
!strcmp(dt->d_name,"dev") ||
!strcmp(dt->d_name,"sys")) continue;
xsystem("cp -dpR /%s /ramd/",dt->d_name);
}
closedir(dp);
xmkdir("dev/pts");
xmkdir("initrd");
umount("/proc");
umount("/sys");
}
void buff_abstract::reset(bool soft_reset)
{
_top_offset = _size = 0;
if (!soft_reset) {
_reserved = calculate_mem(_basic_block_size);
_cdata = static_cast<char *>(realloc(_cdata, _reserved));
}
when_reseted();
}
void buff_abstract::release(size_t size)
{
if (size < size_avail())
return;
size_t _reserved_free = _reserved - _top_offset;
if (_reserved_free <= size) {
if (_top_offset + size > max_buff_size)
throw std::out_of_range("Buffer overflow. Max - " + std::to_string(max_buff_size/1000) + "Kb");
_reserved = std::min(calculate_mem(size), max_buff_size);
_cdata = static_cast<char *>(realloc(_cdata, _reserved));
}
_size = _top_offset + size;
}
buff_abstract::buff_abstract()
: _reserved(calculate_mem(_basic_block_size))
{
// Allocate first memory block.
_cdata = static_cast<char *>(malloc(_reserved));
}
int bootup_main(int argc, char **argv) {
FILE *fp;
DIR *dp;
struct dirent *dt;
int t=0, rc;
char cmd[1024], buf[1024], name[1024];
time_t curtime;
struct tm *loctime;
signal(SIGINT,SIG_IGN);
putenv("PATH=/bin");
putenv("TERM=linux");
umask(0770);
chdir("/");
putchar('\n');
print_banner();
putchar('\n');
xsystem("mount -t proc -o ro virtual /proc");
xsystem("mount -t sysfs -o ro virtual /sys");
// STAGE 1
calculate_mem();
fprintf_stdout("* Creating Mybox filesystem (%d kB) on shared memory...\n",RAMSIZE);
xsystem("mount -t tmpfs -o \"rw,size=%dk\" virtual /ramd",RAMSIZE);
chmod("/ramd",S_IREAD | S_IWRITE | S_IEXEC);
chdir("/ramd");
if((dp=opendir("/")) == NULL) {
perror("opendir");
exit(1);
}
while((dt=readdir(dp))!=NULL) {
if(!strcmp(dt->d_name,".") || !strcmp(dt->d_name,"..") ||
!strcmp(dt->d_name,"lost+found") ||
!strcmp(dt->d_name,"ramd") ||
!strcmp(dt->d_name,"proc") ||
!strcmp(dt->d_name,"dev") ||
!strcmp(dt->d_name,"sys")) continue;
xsystem("cp -dpR /%s /ramd/",dt->d_name);
}
closedir(dp);
xmkdir("dev/pts");
xmkdir("initrd");
umount("/proc");
umount("/sys");
// STAGE 2
rc=pivot_root(".","initrd");
if(rc==-1) {
fprintf_stdout("#### ERROR: Change root file system failed!\n");
exit(1);
}
chdir("/");
xmkdir("proc");
xmkdir("sys");
xsystem("mount -t proc -o rw virtual /proc");
xsystem("mount -t sysfs -o rw virtual /sys");
save_to_file("/proc/sys/kernel/printk","0 0 0 0\n");
if((dp=opendir("/tmp")) == NULL) {
perror("opendir");
exit(1);
}
fprintf_stdout("-> Extracting base tools: ");
while((dt=readdir(dp))!=NULL) {
if(!strcmp(dt->d_name,".") || !strcmp(dt->d_name,"..")) continue;
if(strstr(dt->d_name,".mpk")) {
fprintf_stdout("#");
xsystem("tar -C / -axf /tmp/%s",dt->d_name);
}
}
free(dt);
closedir(dp);
fprintf_stdout("\r* Extracting base tools. Done.%s\n",SPACE);
save_to_file("/proc/sys/kernel/modprobe","/bin/modprobe\n");
xsystem("depmod -a");
// STAGE 3
chdir("/");
xsystem("mdev -s");
xsystem("mount -t devpts /dev/devpts /dev/pts -o \"rw,gid=0,mode=620\"");
rename("/dev/random","/dev/random-block");
symlink("/dev/urandom","/dev/random");
xsystem("chmod 700 *");
if((fp=fopen("/etc/inittab","w"))!=NULL) {
fprintf(fp,"::sysinit:/etc/init.boot/rc.init\n");
fprintf(fp,"tty1::respawn:/bin/getty -h -n -L tty1 115200 linux\n");
fprintf(fp,"ttyS0::respawn:/bin/getty -h -n -L ttyS0 115200 vt100\n");
fprintf(fp,"tty7::respawn:/bin/chkprog\n");
fprintf(fp,"tty8::respawn:/bin/trafficd\n");
fprintf(fp,"::restart:/bin/init\n");
fprintf(fp,"::ctrlaltdel:/bin/bootdown\n");
fprintf(fp,"::ctrlaltdel:/bin/reset\n");
fprintf(fp,"::ctrlaltdel:/bin/reboot\n");
fprintf(fp,"::shutdown:/bin/bootdown\n");
fclose(fp);
}
curtime=time(NULL);
loctime=localtime(&curtime);
strftime(cmd, sizeof(cmd), "[%d/%m/%Y %T] TYPE=INFO MSG=****** SYSTEM LOADING ******\n",loctime);
append_to_file("/tmp/bootup",cmd);
if(file_exists("/bin/getkey")) {
if(system("getkey -c 3 -m \"-> Starting Init: %d\" R")==0) {
fprintf_stdout("\r#### WARNING: LOGIN DISABLED\n");
xtouch("/etc/noconsole");
} else {
fprintf_stdout("\r* Starting Init. Done.\n");
}
}
memset(buf,0x0,sizeof(buf));
snprintf(buf,sizeof(buf),"%s\n","/bin/mdev");
save_to_file("/proc/sys/kernel/hotplug",buf);
do_chroot();
signal(SIGINT,SIG_DFL);
fprintf_stdout("#### ERROR: Failed to boot file system!\n");
fprintf_stdout("#### ERROR: Press Ctrl+Alt+Del or switch off/on for reboot.\n");
while(1);
exit(0);
}
