submit doc and some small changes to getdents

kernel/sys.c

@@ -108,7 +108,6 @@ int sys_getdents(unsigned int fd,struct linux_dirent *dirp,unsigned int count)
 	struct buffer_head * bh;
 	struct dir_entry * de;
 	struct linux_dirent *initmp,*temp;
-	char *foruse;
 	if(!(temp=(struct linux_dirent *)malloc(count+64)))
 		return -1;
 	initmp=temp;
@@ -140,9 +139,7 @@ int sys_getdents(unsigned int fd,struct linux_dirent *dirp,unsigned int count)
 		strcpy(temp->d_name,de->name);
 		temp->d_reclen=size+strlen(de->name)+1;
 		nread+=temp->d_reclen;
-		foruse=(char*)temp;
-		foruse+=temp->d_reclen;
-		temp=(struct linux_dirent*)foruse;
+		temp=(struct linux_dirent*)((char*)temp+temp->d_reclen);
 		de++;
 		pos+=sizdir;
 		i++;
@@ -157,19 +154,21 @@ int sys_getdents(unsigned int fd,struct linux_dirent *dirp,unsigned int count)
 	char *p2=initmp;
 	while(i--)
 		put_fs_byte(*(p2++),p1++);
+	free(initmp);
 	return nread;
 }
-void pri(struct linux_dirent * dir)
-{
-	printk("[%d %d %d %s] ",dir->d_ino,dir->d_off,dir->d_reclen,dir->d_name);
-}
 int sys_pipe2()
 {
 	return -1;
 }
 unsigned int sys_sleep(unsigned int seconds)
 {
-	sys_signal(SIGALRM,SIG_IGN,NULL);
+	struct sigaction tmp;
+	tmp.sa_handler = (void (*)(int)) SIG_IGN;
+	tmp.sa_mask = 0;
+	tmp.sa_flags = SA_ONESHOT | SA_NOMASK;
+	tmp.sa_restorer = (void (*)(void)) NULL;
+	current->sigaction[SIGALRM-1] = tmp;
 	current->alarm=(seconds>0)?(jiffies+HZ*seconds):0;
 	current->state=TASK_INTERRUPTIBLE;
 	current->counter=(current->counter>>1)+current->priority;