修复用户进程页表还原问题

apps/init/init.c

@@ -3,6 +3,10 @@
 
 int main(){
     printf("Init service launched.\n");
-    exec_elf("shell.bin");
+
+    int pid = exec_elf("shell.bin");
+    if(pid != 0){
+        printf("Shell process launched [PID: %d]\n",pid);
+    } else printf("Cannot launch shell\n");
     return 0;
 }

src/driver/keyboard.c

@@ -79,11 +79,13 @@ int input_char_inSM() {
     int    i;
     struct task_struct *task = get_current();
     if (task->tty->is_using == false) {
+
     } else {
         do{
             i = fifo8_get(task->tty->fifo);
         } while (i == -1);
     }
+
     return i;
 }
 

src/include/common.h

@@ -2,8 +2,8 @@
 #define CRASHPOWEROS_COMMON_H
 
 #define OS_NAME "CoolPotOS"
-#define OS_VERSION "v0.3.1"
-#define KERNEL_NAME "CP_Kernel-i386-0.3.1"
+#define OS_VERSION "v0.3.2"
+#define KERNEL_NAME "CP_Kernel-i386-0.3.2"
 
 // b 0x211972
 // b 0x20d0a6

src/kernel/kernel.c

@@ -74,13 +74,18 @@ int check_task(int *pid){
 
 int check_task_usershell(int *pid){
     struct task_struct *shell = found_task_pid(*pid);
+
     while (1){
         if(shell->state == TASK_DEATH){
+            io_sti();
             screen_clear();
             int pid = kernel_thread(setup_shell,NULL,"CPOS-Shell");
             kernel_thread(check_task,&pid,"CPOS-CK");
+            break;
         }
     }
+
+    while (1);
     return 0;
 }
 
@@ -113,7 +118,6 @@ void kernel_main(multiboot_t *multiboot) {
     init_page(multiboot);
 
     init_sched();
-    //proc_install();
     init_keyboard();
 
     init_pit();
@@ -160,8 +164,7 @@ void kernel_main(multiboot_t *multiboot) {
 
     vfs_change_path("apps");
     klogf(user_process("init.bin","InitService") != -1,"Init service process init.\n");
-
-    //int pid = user_process("shell.bin","UserShell");
+   // int pid = user_process("shell.bin","UserShell");
     //kernel_thread(check_task_usershell,&pid,"CTU");
 
    // int pid = kernel_thread(setup_shell,NULL,"CPOS-Shell");

src/kernel/syscall.c

@@ -52,6 +52,7 @@ static void syscall_get_cd(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi,u
 }
 
 static int syscall_vfs_filesize(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi,uint32_t edi){
+    io_sti();
     return vfs_filesize(ebx);
 }
 
@@ -119,8 +120,8 @@ static void* syscall_sysinfo(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi
     return info;
 }
 
-static int syscall_exec(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi,uint32_t edi){
-    int pid = user_process(ebx,ebx);
+static uint32_t syscall_exec(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi,uint32_t edi){
+    uint32_t pid = user_process(ebx,ebx);
     return pid;
 }
 
@@ -142,9 +143,11 @@ void *sycall_handlers[MAX_SYSCALLS] = {
 };
 
 typedef size_t (*syscall_t)(size_t, size_t, size_t, size_t, size_t);
+extern int can_sche; //进程调度器 0 禁用 | 1 启用
 
 size_t syscall() {
     io_cli();
+   // can_sche = 0;
     volatile size_t eax, ebx, ecx, edx, esi, edi;
     asm("mov %%eax, %0\n\t" : "=r"(eax));
     asm("mov %%ebx, %0\n\t" : "=r"(ebx));
@@ -157,6 +160,8 @@ size_t syscall() {
     } else {
         eax = -1;
     }
+    can_sche = 1;
+    io_sti();
     return eax;
 }
 

src/kernel/task.c

@@ -200,6 +200,7 @@ int32_t user_process(char *path, char *name){ // 用户进程创建
     uint32_t size = vfs_filesize(path);
 
     if(size == -1){
+        can_sche = 1;
         return NULL;
     }
 
@@ -232,7 +233,7 @@ int32_t user_process(char *path, char *name){ // 用户进程创建
     char* ker_path = kmalloc(strlen(path) + 1);
     strcpy(ker_path,path);
 
-
+    page_directory_t *cur_page_dir = get_current()->pgd_dir;
     page_switch(page);
 
 
@@ -256,6 +257,7 @@ int32_t user_process(char *path, char *name){ // 用户进程创建
     if(!elf32Validate(ehdr)){
         printf("Unknown exec file format.\n");
         kfree(ker_path);
+        can_sche = 1;
         return NULL;
     }
     uint32_t main = ehdr->e_entry;
@@ -276,7 +278,8 @@ int32_t user_process(char *path, char *name){ // 用户进程创建
     new_task->next = running_proc_head;
     kfree(ker_path);
 
-    page_switch(kernel_directory);
+    page_switch(cur_page_dir);
+    can_sche = 1;
 
     // 找到当前进任务队列，插入到末尾
     struct task_struct *tailt = running_proc_head;

src/sysapp/shell.c

@@ -354,6 +354,7 @@ char *user() {
 }
 
 void setup_shell() {
+    asm("sti");
     printf("Welcome to %s %s (CPOS Kernel i386)\n"
            "\n"
            " * SourceCode:     https://github.com/xiaoyi1212/CoolPotOS\n"

src/util/printf.c

@@ -318,11 +318,13 @@ void screen_clear(){
 }
 
 void putchar(char c){
+    /*
     struct task_struct *task = get_current();
     if(task != NULL){
         task->tty->putchar(task->tty,c);
         return;
     }
+     */
 
     if(vbe_status){
         vbe_putchar(c);