ssssss

.vscode/settings.json

+{
+    "files.associations": {
+        "*.c": "c",
+        "syscall.h": "c",
+        "sysnum.h": "c"
+    }
+}
\ No newline at end of file

kernel/include/sysnum.h

@@ -11,7 +11,7 @@
 #define SYS_exec         7
 #define SYS_fstat        8
 #define SYS_chdir        9
-#define SYS_dup         10
+#define SYS_dup         23
 #define SYS_getpid      11
 #define SYS_sbrk        12
 #define SYS_sleep       13
@@ -24,7 +24,7 @@
 #define SYS_mkdir       20
 #define SYS_close       21
 #define SYS_test_proc   22
-#define SYS_dev         23
+#define SYS_dev         123
 #define SYS_readdir     24
 #define SYS_getcwd      25
 #define SYS_rename      26

kernel/syscall.c

@@ -144,6 +144,7 @@ static uint64 (*syscalls[])(void) = {
   [SYS_trace]       sys_trace,
   [SYS_sysinfo]     sys_sysinfo,
   [SYS_rename]      sys_rename,
+  // [SYS_shutdown]    sys_shutdown,
 };
 
 static char *sysnames[] = {
@@ -173,6 +174,7 @@ static char *sysnames[] = {
   [SYS_trace]       "trace",
   [SYS_sysinfo]     "sysinfo",
   [SYS_rename]      "rename",
+  // [SYS_shutdown]    "shutdown",
 };
 
 void
@@ -182,7 +184,8 @@ syscall(void)
   struct proc *p = myproc();
 
   num = p->trapframe->a7;
-  if(num > 0 && num < NELEM(syscalls) && syscalls[num]) {
+  // printf("num=%d name=%s\n", num, sysnames[num]);
+  if(num > 0 && syscalls[num]) {
     p->trapframe->a0 = syscalls[num]();
         // trace
     if ((p->tmask & (1 << num)) != 0) {

xv6-user/init.c

@@ -24,10 +24,10 @@ char *argv[] = {0};
 
 char *tests[] = {
 //  "sh",
- "brk",
+//  "brk",
 //  "chdir",
 //  "close",
-//  "dup",
+ "dup",
 //  "exit",
 //  "fork",
 //  "fstat",
@@ -44,7 +44,7 @@ char *tests[] = {
 //  "write",
 //  "sleep",
 //  "clone",
-};
+}; 
 int counts = sizeof(tests) / sizeof((tests)[0]);
 int main(void) {
     int pid, wpid;