Operating Systems: Design and ImplementationPrentice-Hall, 1987 - 719 Seiten From one of America's leading authors of computer science books comes complete coverage of operating systems, plus all the design and implementation issues with a complete operating system--MINIX. |
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Seite 255
... Entry File name File type File size Entry Owner Entry Entry Usage count Protection information Creation time Time of last modification List of disk blocks used Fig . 5-2 . A directory may have several entries , each describing one file .
... Entry File name File type File size Entry Owner Entry Entry Usage count Protection information Creation time Time of last modification List of disk blocks used Fig . 5-2 . A directory may have several entries , each describing one file .
Seite 259
... entry 8 contains the next block number , 4. Entry 4 points to entry 2 , and entry 2 is marked as End of File . This scheme was originally designed for 320K floppy disks using a 1K block size ( standard for MS - DOS ) . Block numbers are ...
... entry 8 contains the next block number , 4. Entry 4 points to entry 2 , and entry 2 is marked as End of File . This scheme was originally designed for 320K floppy disks using a 1K block size ( standard for MS - DOS ) . Block numbers are ...
Seite 262
... entries . This field is used to tell which entry comes first , second , and so on . The block count field tells how many of the 16 potential disk block entries are in use . The final 16 fields contain the disk block numbers themselves ...
... entries . This field is used to tell which entry comes first , second , and so on . The block count field tells how many of the 16 potential disk block entries are in use . The final 16 fields contain the disk block numbers themselves ...
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Operating Systems: Design and Implementation Andrew S. Tanenbaum,Albert S. Woodhull Keine Leseprobe verfügbar - 2009 |
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address space algorithm allocated bit map buffer bytes cache caller char character clock command compiler contains controller copy data segment deadlock define device drivers disk block diskette entry error example EXEC executed extern struct file descriptor file system filp flag floppy disk FORK fsck hardware header hole i-node IBM PC implement include h/const.h inode input interrupt kernel linked loop machine memory manager MINIX MINIX file system mode mounted MS-DOS needed no_sys operating system output page fault parameters password pointer problem proc proc_nr procedure process table PUBLIC int queue RAM disk register struct request return(OK scheduling semaphore server SETUID shown in Fig signal slot special file stack struct inode super_block system call task terminal UNIX update user process variables video RAM vir_bytes virtual address waiting zone