/* @(#)iob.h 1.1 92/07/30 SMI */ /* * This struct keeps track of an open file in the standalone I/O system. * * It includes an IOB for device addess, an inode, a buffer for reading * indirect blocks and inodes, and a buffer for the superblock of the * file system (if any). */ struct iob { struct saioreq i_si; /* I/O request block for this file */ struct inode i_ino; /* Inode for this file */ char i_buf[MAXBSIZE];/* Buffer for reading inodes & dirs */ union { struct fs ui_fs; /* Superblock for file system */ char dummy[SBSIZE]; } i_un; }; #define i_flgs i_si.si_flgs #define i_boottab i_si.si_boottab #define i_devdata i_si.si_devdata #define i_ctlr i_si.si_ctlr #define i_unit i_si.si_unit #define i_boff i_si.si_boff #define i_cyloff i_si.si_cyloff #define i_offset i_si.si_offset #define i_bn i_si.si_bn #define i_ma i_si.si_ma #define i_cc i_si.si_cc #define i_fs i_un.ui_fs #define NBUFS (NIADDR+1) /* NOT! a variable */ #define IOB_UNUSED 0 /* i_flgs field of an unused IOB */ #define DEV_NAME_LEN 10 /* max device name length */ #define FILE_NAME_LEN 24 /* max file name length */ #define SERVER_NAME_LEN 24 /* max. server name length */ #define PATHNAME_LEN 100 /* max. pathname length */
