//
// Allocates a new env and loads the named elf binary into it.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
// Where does the result go?
// By convention, envs[0] is the first environment allocated, so
// whoever calls env_create simply looks for the newly created
// environment there.
void
env_create(uint8_t *binary, size_t size)
{
// LAB 3: Your code here.
if (env_alloc(&envs, 0) < 0)
panic("env_create - env_alloc");
load_icode(envs, binary, size);
}
//
// Allocates a new env and loads the named elf binary into it.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
void
env_create(uint8_t *binary, size_t size)
{
struct Env *e;
int ret = env_alloc(&e, 0);
if (ret)
panic("env_create: %e", ret);
load_icode(e, binary, size);
}
//
// Allocates a new env with env_alloc and loads the named elf
// binary into it with load_icode.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
void
env_create(uint8_t *binary, size_t size)
{
// LAB 3: Your code here.
struct Env *newenv;
int r;
if((r = env_alloc(&newenv,0)) != 0)
panic("%e\n",r);
load_icode(newenv, binary, size);
}
//
// Allocates a new env and loads the named elf binary into it.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
// Where does the result go?
// By convention, envs[0] is the first environment allocated, so
// whoever calls env_create simply looks for the newly created
// environment there.
void
env_create(uint8_t *binary, size_t size)
{
// LAB 3: Your code here.
struct Env *nenv;
//cprintf("++\n");
env_alloc(&nenv, 0);
//cprintf("--\n");
load_icode(nenv, binary, size);
//cprintf("%%\n");
}
//
// Allocates a new env and loads the named elf binary into it.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
// Where does the result go?
// By convention, envs[0] is the first environment allocated, so
// whoever calls env_create simply looks for the newly created
// environment there.
void
env_create(uint8_t *binary, size_t size)
{
// LAB 3: Your code here.
struct Env *env;
if( env_alloc(&env, 0) != 0){
cprintf("env_create env_alloc fail!!\n");
return;
}
load_icode(env,binary,size);
}
//
// Allocates a new env and loads the named elf binary into it.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
// Where does the result go?
// By convention, envs[0] is the first environment allocated, so
// whoever calls env_create simply looks for the newly created
// environment there.
void
env_create(uint8_t *binary, size_t size)
{
// LAB 3: Your code here
struct Env *e;
int r = env_alloc(&e, 0);//0 to set it
// cprintf("%d \n",r);
if(r<0){//failed
panic("env_create failed\n");
}
load_icode(e, binary, size);//load program
}
void
env_create(uint8_t *binary, size_t size)
{
struct Env *env;
int r;
if (!(r=env_alloc(&env, 0))) {
load_icode(env, binary, size);
} else {
panic("Failed: %e", r);
}
// LAB 3: Your code here.
}
//
// Allocates a new env and loads the named elf binary into it.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
// Where does the result go?
// By convention, envs[0] is the first environment allocated, so
// whoever calls env_create simply looks for the newly created
// environment there.
void
env_create(uint8_t *binary, size_t size)
{
// LAB 3: Your code here.
//cprintf("env begin to create\n");
struct Env * newenv;
int state;
if((state = env_alloc(&newenv, 0)) < 0)
panic("env alloc error:%e",state);
//cprintf("env create %08x\n",newenv->env_id);
load_icode(newenv, binary, size);
}
//
// Allocates a new env and loads the named elf binary into it.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
// Where does the result go?
// By convention, envs[0] is the first environment allocated, so
// whoever calls env_create simply looks for the newly created
// environment there.
void
env_create(uint8_t *binary, size_t size)
{
// LAB 3: Your code here.
struct Env *env;
//cprintf("env_create start!\n");
if(env_alloc(&env, 0) != 0){
panic("env_create env_alloc fail!!\n");
}
//cprintf("env_alloc success!!\n");
load_icode(env, binary, size);
//cprintf("env_create end\n");
return ;
}
//
// Allocates a new env and loads the named elf binary into it.
// This function is ONLY called during kernel initialization,
// before running the first user-mode environment.
// The new env's parent ID is set to 0.
//
void
env_create(uint8_t *binary, size_t size)
{
// LAB 3: Your code here.
struct Env *env;
switch(env_alloc(&env, 0))
{
case -E_NO_FREE_ENV:
panic("All NENVS environments are allocated\n");
return;
case -E_NO_MEM:
panic("No memory\n");
return;
default:
break;
}
env->env_status = ENV_RUNNABLE;
load_icode(env, binary, size);
}
int
do_execve(const char *filename, const char **argv, const char **envp) {
static_assert(EXEC_MAX_ARG_LEN >= FS_MAX_FPATH_LEN);
struct mm_struct *mm = current->mm;
char local_name[PROC_NAME_LEN + 1];
memset(local_name, 0, sizeof(local_name));
char *kargv[EXEC_MAX_ARG_NUM], *kenvp[EXEC_MAX_ENV_NUM];
const char *path;
int ret = -E_INVAL;
lock_mm(mm);
#if 0
if (name == NULL) {
snprintf(local_name, sizeof(local_name), "<null> %d", current->pid);
}
else {
if (!copy_string(mm, local_name, name, sizeof(local_name))) {
unlock_mm(mm);
return ret;
}
}
#endif
snprintf(local_name, sizeof(local_name), "<null> %d", current->pid);
int argc = 0, envc = 0;
if ((ret = copy_kargv(mm, kargv, argv, EXEC_MAX_ARG_NUM, &argc)) != 0) {
unlock_mm(mm);
return ret;
}
if ((ret = copy_kargv(mm, kenvp, envp, EXEC_MAX_ENV_NUM, &envc)) != 0) {
unlock_mm(mm);
put_kargv(argc, kargv);
return ret;
}
#if 0
int i;
kprintf("## fn %s\n", filename);
kprintf("## argc %d\n", argc);
for(i=0;i<argc;i++)
kprintf("## %08x %s\n", kargv[i], kargv[i]);
kprintf("## envc %d\n", envc);
for(i=0;i<envc;i++)
kprintf("## %08x %s\n", kenvp[i], kenvp[i]);
#endif
//path = argv[0];
//copy_from_user (mm, &path, argv, sizeof (char*), 0);
path = filename;
unlock_mm(mm);
/* linux never do this */
//fs_closeall(current->fs_struct);
/* sysfile_open will check the first argument path, thus we have to use a user-space pointer, and argv[0] may be incorrect */
int fd;
if ((ret = fd = sysfile_open(path, O_RDONLY)) < 0) {
goto execve_exit;
}
if (mm != NULL) {
mm->lapic = -1;
mp_set_mm_pagetable(NULL);
if (mm_count_dec(mm) == 0) {
exit_mmap(mm);
put_pgdir(mm);
bool intr_flag;
local_intr_save(intr_flag);
{
list_del(&(mm->proc_mm_link));
}
local_intr_restore(intr_flag);
mm_destroy(mm);
}
current->mm = NULL;
}
put_sem_queue(current);
ret = -E_NO_MEM;
/* init signal */
put_sighand(current);
if ((current->signal_info.sighand = sighand_create()) == NULL) {
goto execve_exit;
}
sighand_count_inc(current->signal_info.sighand);
put_signal(current);
if ((current->signal_info.signal = signal_create()) == NULL) {
goto execve_exit;
}
signal_count_inc(current->signal_info.signal);
if ((current->sem_queue = sem_queue_create()) == NULL) {
goto execve_exit;
}
sem_queue_count_inc(current->sem_queue);
if ((ret = load_icode(fd, argc, kargv, envc, kenvp)) != 0) {
goto execve_exit;
}
set_proc_name(current, local_name);
if (do_execve_arch_hook (argc, kargv) < 0)
goto execve_exit;
put_kargv(argc, kargv);
return 0;
execve_exit:
put_kargv(argc, kargv);
put_kargv(envc, kenvp);
/* exec should return -1 if failed */
//return ret;
do_exit(ret);
panic("already exit: %e.\n", ret);
}