new doc

kernel/sys.c

@@ -110,14 +110,14 @@ int sys_getdents(unsigned int fd,struct linux_dirent *dirp,unsigned int count)
 	struct linux_dirent *initmp,*temp;
 	char *foruse;
 	if(!(temp=(struct linux_dirent *)malloc(count+64)))
-		return NULL;
+		return -1;
 	initmp=temp;
 	int size=sizeof(long)+sizeof(off_t)+sizeof(unsigned short);
 	
 	if (!(block = filenode->i_zone[0]))
-		return NULL;
+		return -1;
 	if (!(bh = bread(filenode->i_dev,block)))
-		return NULL;
+		return -1;
 	de = (struct dir_entry *) bh->b_data;
 	entries=filenode->i_size/(sizeof(struct dir_entry));
 	i=0;
@@ -132,13 +132,13 @@ int sys_getdents(unsigned int fd,struct linux_dirent *dirp,unsigned int count)
 					i += DIR_ENTRIES_PER_BLOCK;
 					continue;
 				}
-				pos+=((struct dir_entry *) bh->b_data-(de-1))*sizdir;
+				pos+=((char*) bh->b_data-(char*)(de-1));
 				de = (struct dir_entry *) bh->b_data;
 			}
 		temp->d_ino=de->inode;
 		temp->d_off=pos;
 		strcpy(temp->d_name,de->name);
-		temp->d_reclen=size+sizeof(de->name);
+		temp->d_reclen=size+strlen(de->name)+1;
 		nread+=temp->d_reclen;
 		foruse=(char*)temp;
 		foruse+=temp->d_reclen;
@@ -151,7 +151,7 @@ int sys_getdents(unsigned int fd,struct linux_dirent *dirp,unsigned int count)
 	{
 		errno=ERANGE;
 		return -1;
-	}
+	}//printk("%d",nread);
 	i=nread;
 	char *p1=dirp;
 	char *p2=initmp;