修复用户进程创建问题

apps/init/init.c

@@ -3,10 +3,6 @@
 
 int main(){
     printf("Init service launched.\n");
-    syscall_vfs_change_path("apps");
+    exec_elf("shell.bin");
-    int pid = exec_elf("shell.bin");
-    if(pid != -1){
-        printf("Shell launch win! PID:[%d]\n",pid);
-    } else printf("Error: Cannot launch shell\n");
     return 0;
 }

apps/libs/syscall.c

@@ -1,4 +1,5 @@
 #include "../include/syscall.h"
+#include "../include/stdio.h"
 
 void syscall_print(char* c){
     uint32_t rets;

apps/shell/neofetch.c

@@ -33,5 +33,6 @@ void print_info(){
     printf("            :+#@@@@@@@@@@@@@@@@@@@@#+:            \n");
     printf("                :=+*#&@@@@@@&#*+-:                \n");
     
+
     free_info(info);
 }

src/driver/pci.c

@@ -105,7 +105,6 @@ void pci_config(unsigned int bus, unsigned int f, unsigned int equipment, unsign
 }
 
 void init_pci(){
-
     PCI_ADDR_BASE = kmalloc(1 * 1024 * 1024);
     unsigned int i, BUS, Equipment, F, ADDER, *i1;
     unsigned char *PCI_DATA = PCI_ADDR_BASE, *PCI_DATA1;

src/fs/iso9660.c

@@ -389,6 +389,7 @@ bool ISO_ReadFile(struct vfs_t *vfs, char *path, char *buffer) {
         }
         return false; // not found
     }
+
     for (;;) {
         size_t read;
         l9660_read(&file, buffer, 128, &read);

src/fs/vfs.c

@@ -117,10 +117,12 @@ bool vfs_readfile(char *path, char *buffer) {
     char *new_path = kmalloc(strlen(path) + 1);
     strcpy(new_path, path);
     vfs_t *vfs = ParsePath(new_path);
+
     if (vfs == NULL) {
         kfree(new_path);
         return false;
     }
+
     int result = vfs->ReadFile(vfs, new_path, buffer);
     kfree(new_path);
     return result;
@@ -321,9 +323,6 @@ vfs_file *get_cur_file(char* filename){
     }
     DeleteList(ls);
     kfree(ls);
-
-
-
     return file;
 }
 
@@ -389,6 +388,25 @@ void vfs_getPath_no_drive(char *buffer) {
     }
 }
 
+void vfs_getPath_no_drive_src(vfs_t *src,char *buffer) {
+    char *path;
+    List *l;
+    buffer[0] = 0;
+    int pos = strlen(buffer);
+    int i;
+    for (i = 1; FindForCount(i, src->path) != NULL; i++) {
+        l = FindForCount(i, src->path);
+        path = (char *)l->val;
+        insert_char(buffer, pos, '/');
+        pos++;
+        insert_str(buffer, path, pos);
+        pos += strlen(path);
+    }
+    if (i == 1) {
+        insert_char(buffer, 0, '/');
+    }
+}
+
 void init_vfs() {
     for (int i = 0; i < 26; i++) {
         vfsstl[i].flag = 0;
@@ -419,11 +437,43 @@ bool vfs_register_fs(vfs_t vfs) {
 
 void vfs_copy(struct task_struct *task,vfs_t* src){
     vfs_change_disk(task, src->drive);
-    List *l;
+    char* buffer[255];
-    char *path;
+
-    for (int i = 1; FindForCount(i, task->vfs_now->path) != NULL; i++) {
+    vfs_getPath_no_drive_src(src,buffer);
-        l    = FindForCount(i, task->vfs_now->path);
+
-        path = (char *)l->val;
+    char *buf = kmalloc(strlen(buffer) + 1);
-        task->vfs_now->cd(task->vfs_now, path);
+    char *r = buf;
+    memcpy(buf, buffer, strlen(buffer) + 1);
+    int i = 0;
+
+    if (buf[i] == '/' || buf[i] == '\\') {
+        if (!task->vfs_now->cd(task->vfs_now, "/")) {
+            kfree(r);
+            return;
+        }
+        i++;
+        buf++;
     }
+
+    for (;; i++) {
+        if (buf[i] == '/' || buf[i] == '\\') {
+            buf[i] = 0;
+            if (!task->vfs_now->cd(task->vfs_now, buf)) {
+                kfree(r);
+                return;
+            }
+            buf += strlen(buf) + 1;
+        }
+        if (buf[i] == '\0') {
+            int bol = task->vfs_now->cd(task->vfs_now, buf);
+
+            if (!(bol)) {
+                kfree(r);
+                return;
+            } else{
+                break;
+            }
+        }
+    }
+    kfree(r);
 }

src/include/vfs.h

@@ -75,5 +75,6 @@ bool vfs_register_fs(vfs_t vfs);
 void init_vfs();
 vfs_file *get_cur_file(char* filename);
 void vfs_copy(struct task_struct *task,vfs_t* src);
+void vfs_getPath_no_drive_src(vfs_t *src,char *buffer);
 
 #endif

src/kernel/kernel.c

@@ -159,10 +159,10 @@ void kernel_main(multiboot_t *multiboot) {
     clock_sleep(25);
 
     vfs_change_path("apps");
-    //klogf(user_process("init.bin","InitService") != -1,"Init service process init.\n");
+    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");
+    //kernel_thread(check_task_usershell,&pid,"CTU");
 
    // int pid = kernel_thread(setup_shell,NULL,"CPOS-Shell");
    // klogf(pid != -1,"Launch kernel shell.\n");

src/kernel/page.c

@@ -166,6 +166,7 @@ void page_fault(registers_t *regs) {
     }
 
     sleep(1);
+    while (1) io_hlt();
     io_sti();
 }
 
@@ -252,9 +253,6 @@ void init_page(multiboot_t *mboot) {
         j += 0x1000;
     }
 
-
-
-
     register_interrupt_handler(14, page_fault);
     switch_page_directory(kernel_directory);
 

src/kernel/syscall.c

@@ -120,7 +120,8 @@ static void* syscall_sysinfo(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi
 }
 
 static int syscall_exec(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi,uint32_t edi){
-    return user_process(ebx,ebx);
+    int pid = user_process(ebx,ebx);
+    return pid;
 }
 
 void *sycall_handlers[MAX_SYSCALLS] = {

src/kernel/task.c

@@ -137,10 +137,12 @@ void task_kill(int pid) {
     struct task_struct *argv = found_task_pid(pid);
     if (argv == NULL) {
         printf("Cannot found task Pid:[%d].\n", pid);
+        io_sti();
         return;
     }
     if (argv->pid == 0) {
         printf("\033ff3030;[kernel]: Taskkill cannot terminate kernel processes.\033c6c6c6;\n");
+        io_sti();
         return;
     }
     argv->state = TASK_DEATH;
@@ -191,14 +193,16 @@ void change_task_to(registers_t *reg,struct task_struct *next) {
 int32_t user_process(char *path, char *name){ // 用户进程创建
     can_sche = 0;
     if(path == NULL){
-        return -1;
+        return NULL;
     }
     io_sti();
 
     uint32_t size = vfs_filesize(path);
+
     if(size == -1){
-        return -1;
+        return NULL;
     }
+
     io_cli();
 
     struct task_struct *new_task = (struct task_struct *) kmalloc(STACK_SIZE);
@@ -221,13 +225,17 @@ int32_t user_process(char *path, char *name){ // 用户进程创建
     new_task->vfs_now = NULL;
     new_task->tty = kmalloc(sizeof(tty_t));
     init_default_tty(new_task);
+    io_sti();
 
     vfs_copy(new_task,get_current()->vfs_now);
 
-    io_sti();
+    char* ker_path = kmalloc(strlen(path) + 1);
+    strcpy(ker_path,path);
+
 
     page_switch(page);
 
+
     for (int i = USER_START; i < USER_END + 0x1000;i++) { //用户堆以及用户栈映射
         page_t *pg = get_page(i,1,page, false);
         alloc_frame(pg,0,1);
@@ -241,12 +249,14 @@ int32_t user_process(char *path, char *name){ // 用户进程创建
     char* buffer =  USER_EXEC_FILE_START;
 
     memset(buffer,0,size);
-    vfs_readfile(path,buffer);
+    int r = vfs_readfile(ker_path,buffer);
 
     Elf32_Ehdr *ehdr = buffer;
+
     if(!elf32Validate(ehdr)){
         printf("Unknown exec file format.\n");
-        return -1;
+        kfree(ker_path);
+        return NULL;
     }
     uint32_t main = ehdr->e_entry;
     load_elf(ehdr,page);
@@ -264,6 +274,7 @@ int32_t user_process(char *path, char *name){ // 用户进程创建
     // 设置新任务的标志寄存器未屏蔽中断，很重要
     new_task->context.eflags = (0 << 12 | 0b10 | 1 << 9);
     new_task->next = running_proc_head;
+    kfree(ker_path);
 
     page_switch(kernel_directory);
 
@@ -369,16 +380,12 @@ void switch_to_user_mode(uint32_t func) {
     iframe.edx = 6;
     iframe.ecx = 7;
     iframe.eax = 8;
-
     iframe.gs = GET_SEL(4 * 8, SA_RPL3);
     iframe.ds = GET_SEL(4 * 8, SA_RPL3);
     iframe.es = GET_SEL(4 * 8, SA_RPL3);
     iframe.fs = GET_SEL(4 * 8, SA_RPL3);
-
     iframe.ss = GET_SEL(4 * 8, SA_RPL3);
     iframe.cs = GET_SEL(3 * 8, SA_RPL3);
-    //set_tss_ss0(iframe.ss);
-
     iframe.eip = func; //用户可执行程序入口
     iframe.eflags = (0 << 12 | 0b10 | 1 << 9);
     iframe.esp = esp; // 设置用户态堆栈