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Download USER'S GUIDE - QNX Software Systems
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QNX 4 disk structure 2005, QNX Software Systems Ltd. /.inodes entry Directory entry 0 l_fname[48] 48 l_inode_blk 52 l_inode_ndx 53 l_lfn_block 57 l_spare[6] 63 l_status /.longfilenames entry 0 lfn_block 4 lfn_index 5 lfn_status 6 lfn_name[505] 0 i_fname[16] 16 i_size 20 i_first_xtnt 28 i_xblk 32 i_ftime 36 i_mtime 40 i_atime 44 i_ctime 48 i_num_xtnts 50 i_mode 52 i_uid 54 i_gid 56 i_nlink 58 i_zero[4] 62 i_type 63 i_status An inode entry. If the filename is longer than 48 characters: ¯ the l fname field in the directory entry holds a 48-character truncated version of the name ¯ the l lfn block field points to an entry in .longfilenames. Extent blocks Extent blocks are used for any file that has more than a single extent. The i xblk field in the directory entry points to one of these extent blocks, which in turn defines where the second and subsequent extents are to be found. 414 Chapter 18 ¯ Backing Up and Recovering Data February 1, 2005
