update name of code to labcodes

labcodes/lab8/user/libs/ulib.c

@@ -0,0 +1,87 @@
+#include <defs.h>
+#include <syscall.h>
+#include <stdio.h>
+#include <ulib.h>
+#include <stat.h>
+#include <string.h>
+#include <lock.h>
+
+static lock_t fork_lock = INIT_LOCK;
+
+void
+lock_fork(void) {
+    lock(&fork_lock);
+}
+
+void
+unlock_fork(void) {
+    unlock(&fork_lock);
+}
+
+void
+exit(int error_code) {
+    sys_exit(error_code);
+    cprintf("BUG: exit failed.\n");
+    while (1);
+}
+
+int
+fork(void) {
+    return sys_fork();
+}
+
+int
+wait(void) {
+    return sys_wait(0, NULL);
+}
+
+int
+waitpid(int pid, int *store) {
+    return sys_wait(pid, store);
+}
+
+void
+yield(void) {
+    sys_yield();
+}
+
+int
+kill(int pid) {
+    return sys_kill(pid);
+}
+
+int
+getpid(void) {
+    return sys_getpid();
+}
+
+//print_pgdir - print the PDT&PT
+void
+print_pgdir(void) {
+    sys_pgdir();
+}
+
+void
+lab6_set_priority(uint32_t priority)
+{
+    sys_lab6_set_priority(priority);
+}
+
+int
+sleep(unsigned int time) {
+    return sys_sleep(time);
+}
+
+unsigned int
+gettime_msec(void) {
+    return (unsigned int)sys_gettime();
+}
+
+int
+__exec(const char *name, const char **argv) {
+    int argc = 0;
+    while (argv[argc] != NULL) {
+        argc ++;
+    }
+    return sys_exec(name, argc, argv);
+}