fs/isofs/file.c

   1 /*
   2  *  linux/fs/isofs/file.c
   3  *
   4  *  (C) 1992, 1993, 1994  Eric Youngdale Modified for ISO 9660 filesystem.
   5  *
   6  *  (C) 1991  Linus Torvalds - minix filesystem
   7  *
   8  *  isofs regular file handling primitives
   9  */
  10
  11 #include <linux/sched.h>
  12 #include <linux/iso_fs.h>
  13 #include <linux/fcntl.h>
  14 #include <linux/kernel.h>
  15 #include <linux/errno.h>
  16 #include <linux/stat.h>
  17 #include <linux/locks.h>
  18 #include <linux/fs.h>
  19 #include <linux/iso_fs.h>
  20
  21 /*
  22  * We have mostly NULLs here: the current defaults are OK for
  23  * the isofs filesystem.
  24  */
  25 static struct file_operations isofs_file_operations = {
  26         NULL,                   /* lseek - default */
  27         generic_file_read,      /* read */
  28         NULL,                   /* write */
  29         NULL,                   /* readdir - bad */
  30         NULL,                   /* poll - default */
  31         NULL,                   /* ioctl - default */
  32         generic_file_mmap,      /* mmap */
  33         NULL,                   /* no special open is needed */
  34         NULL,                   /* flush */
  35         NULL,                   /* release */
  36         NULL                    /* fsync */
  37 };
  38
  39 struct inode_operations isofs_file_inode_operations = {
  40         &isofs_file_operations, /* default file operations */
  41         NULL,                   /* create */
  42         NULL,                   /* lookup */
  43         NULL,                   /* link */
  44         NULL,                   /* unlink */
  45         NULL,                   /* symlink */
  46         NULL,                   /* mkdir */
  47         NULL,                   /* rmdir */
  48         NULL,                   /* mknod */
  49         NULL,                   /* rename */
  50         NULL,                   /* readlink */
  51         NULL,                   /* follow_link */
  52         generic_readpage,       /* readpage */
  53         NULL,                   /* writepage */
  54         isofs_bmap,             /* bmap */
  55         NULL,                   /* truncate */
  56         NULL                    /* permission */
  57 };