diff --git a/fs/namei.c b/fs/namei.c
index 8d4976b6a75f003c79ddc1e56c2340d085a47d7b..56070801eac1b721ec45326359df9bb8aaaff0fb 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -367,6 +367,10 @@ struct m_inode * _namei(const char * pathname, struct m_inode * base,
     return inode;
 }
 
+struct m_inode * lnamei(const char * pathname) {
+    return _namei(pathname, NULL, 0);
+}
+
 struct m_inode * namei(const char * pathname) {
     return _namei(pathname,NULL,1);
 }
diff --git a/fs/stat.c b/fs/stat.c
index 8e8dda7a244c8fdf1c8e52831f4a50068deff1d3..6c56e960a744148514a230c49b9a5ad13ef09ebb 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -38,6 +38,16 @@ int sys_stat(char * filename, struct stat * statbuf) {
     return 0;
 }
 
+int sys_lstat(char * filename, struct stat * statbuf) {
+    struct m_inode * inode;
+    if (!(inode = lnamei(filename)))
+        return -ENOENT;
+
+    cp_stat(inode,statbuf);
+    iput(inode);
+    return 0;
+}
+
 int sys_fstat(unsigned int fd, struct stat * statbuf) {
     struct file * f;
     struct m_inode * inode;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 888b4793acabd51812ce2d5ef87f0d4841bb3777..dd03db45f26b17fde4e90d5887c506a2a37fc3f4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -160,6 +160,7 @@ extern struct buffer_head * bread(int dev,int block);
 extern void bread_page(unsigned long addr,int dev,int b[4]);
 
 extern struct m_inode * namei(const char * pathname);
+extern struct m_inode * lnamei(const char * pathname);
 extern int open_namei(const char * pathname, int flag, int mode,
         struct m_inode ** res_inode);
 
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 212396e559c5610ad168139628f57fa33179a55f..5e3529293159618cc9ba6bb444374469a8b1d108 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -7,6 +7,9 @@
 #define TASK_SIZE       0x04000000
 #define LIBRARY_SIZE    0x00400000
 
+#define CT_TO_SECS(x)   ((x) / HZ)
+#define CT_TO_USECS(x)  (((x) % HZ) * 1000000/HZ)
+
 #if (TASK_SIZE & 0x3fffff)
 #error "TASK_SIZE must be multiple of 4M"
 #endif
diff --git a/include/linux/sys.h b/include/linux/sys.h
index 4f5addf6dc5bda77657df765cab842247f7b2f42..b5b5dcce477e0737697dc57d957cc5ae33a80470 100644
--- a/include/linux/sys.h
+++ b/include/linux/sys.h
@@ -76,13 +76,13 @@ extern int sys_sigaction();
 //extern int sys_setrlimit();
 //extern int sys_getrlimit();
 //extern int sys_getrusage();
-//extern int sys_gettimeofday();
+extern int sys_gettimeofday();
 //extern int sys_settimeofday();
 //extern int sys_getgroups();
 //extern int sys_setgroups();
 //extern int sys_select();
 //extern int sys_symlink();
-//extern int sys_lstat();
+extern int sys_lstat();
 //extern int sys_readlink();
 //extern int sys_uselib();
 
@@ -166,7 +166,7 @@ fn_ptr sys_call_table[] = {
     sys_sigaction,
     0, //    sys_sgetmask,
     0, //    sys_ssetmask,
-    0, //
+
     0, //    sys_setreuid,
     0, //    sys_setregid,
     0, //    sys_sigsuspend,
@@ -175,13 +175,13 @@ fn_ptr sys_call_table[] = {
     0, //    sys_setrlimit,
     0, //    sys_getrlimit,
     0, //    sys_getrusage,
-    0, //    sys_gettimeofday,
+    sys_gettimeofday,
     0, //    sys_settimeofday,
     0, //    sys_getgroups,
     0, //    sys_setgroups,
     0, //    sys_select,
     0, //    sys_symlink,
-    0, //    sys_lstat,
+    sys_lstat,
     0, //    sys_readlink,
     0, //    sys_uselib
 };
diff --git a/include/sys/time.h b/include/sys/time.h
index c49f6b7eb791c30bcb0fa4ff0f97e44e7a302788..df9a1610da7189eec803bb4e4c0b8c4c461812f8 100644
--- a/include/sys/time.h
+++ b/include/sys/time.h
@@ -11,6 +11,8 @@ struct timezone {
     int     tz_dsttime;
 };
 
+int gettimeofday(struct timeval * tp, struct timezone * tz);
+
 #include <time.h>
 
 #endif
diff --git a/include/unistd.h b/include/unistd.h
index 3cfeafa704788e46c199831eae117dfeb8132356..de156418f1ff74661643d840e57311b671ff55f6 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -161,6 +161,7 @@ int execve(const char * filename, char ** argv, char ** envp);
 int fcntl(int fildes, int cmd, ...);
 int fork();
 int fstat();
+int gettimeofday(struct timeval *tv, struct timezone *tz);
 int setup(void *BIOS);
 int sync();
 int open(const char * filename, int flag, ...);
diff --git a/kernel/Makefile b/kernel/Makefile
index 831109424ccb8ba15b6e19664079fe85d7474bd2..bd35202dc2f2cf9ab69e93a62870ec08f56ec938 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -1,5 +1,5 @@
 GCC := gcc
-USE_DEBUG :=
+USE_DEBUG := -DDEBUG=2
 CCFLAG := -I../include -nostdinc -ffreestanding -Wall -fomit-frame-pointer -fno-pic -fno-stack-protector -c -m32 $(USE_DEBUG)
 LDFLAG := -Ttext 0x0 -s --oformat binary -m elf_i386
 INCDIR := ../include
diff --git a/kernel/printk.c b/kernel/printk.c
index 8b247b77505ae4cd9bb57bf4377835c81b6ed8e7..17ddc4dcb128cdb9e8df4f3bcc2e411a946b711b 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -29,3 +29,14 @@ int printk(const char* fmt, ...) {
     return i;
 }
 
+void print_sys(int index) {
+    int i;
+    int filter[] = {3, 4, 5, 6, 18, 29, 45, 48, 54};
+
+    for (i = 0; i < sizeof(filter) / sizeof(int); i++) {
+        if (index == filter[i])
+            return;
+    }
+    printk("sys call %d\n", index);
+}
+
diff --git a/kernel/sys.c b/kernel/sys.c
index 585569cd804b3c548d33a446d08bf03075d338a0..09e448013df29622a4b3a017bd2b02ae621e6ed1 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -5,9 +5,12 @@
 #include <linux/config.h>
 #include <sys/utsname.h>
 #include <sys/param.h>
+#include <sys/time.h>
 #include <asm/segment.h>
 #include <string.h>
 
+struct timezone sys_tz = { 0, 0};
+
 int sys_ftime() {
     return -ENOSYS;
 }
@@ -106,6 +109,23 @@ int sys_time(long * tloc) {
     return i;
 }
 
+int sys_gettimeofday(struct timeval *tv, struct timezone *tz) {
+    if (tv) {
+        verify_area(tv, sizeof *tv);
+        put_fs_long(startup_time + CT_TO_SECS(jiffies),
+                (unsigned long *) tv);
+        put_fs_long(CT_TO_USECS(jiffies),
+                ((unsigned long *) tv)+1);
+    }
+
+    if (tz) {
+        verify_area(tz, sizeof *tz);
+        put_fs_long(sys_tz.tz_minuteswest, (unsigned long *) tz);
+        put_fs_long(sys_tz.tz_dsttime, ((unsigned long *) tz)+1);
+    }
+    return 0;
+}
+
 int sys_ulimit() {
     return -ENOSYS;
 }
diff --git a/kernel/sys_call.S b/kernel/sys_call.S
index c7506ba59e7d63fa293586002de03117553d4ede..9cea29664a2832046acf3f13920cd3b8ff78962e 100644
--- a/kernel/sys_call.S
+++ b/kernel/sys_call.S
@@ -33,9 +33,6 @@ sa_restorer = 12
 int_msg:
     .asciz  "In kernel interrupt\n\r"
 
-show_ind:
-    .asciz  "sys call %d\n\r"
-
 .align 4
 reschedule:
     pushl $ret_from_sys_call
@@ -59,9 +56,7 @@ system_call:
 #ifdef DEBUG
 #if DEBUG > 1
     pushl %eax
-    pushl $show_ind
-    call  printk
-    popl  %eax
+    call  print_sys
     popl  %eax
 #endif
 #endif