file.c
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上传日期:2013-04-10
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- /*
- * linux/fs/ext2/file.c
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card (card@masi.ibp.fr)
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * from
- *
- * linux/fs/minix/file.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * ext2 fs regular file handling primitives
- *
- * 64-bit file support on 64-bit platforms by Jakub Jelinek
- * (jj@sunsite.ms.mff.cuni.cz)
- */
- #include <linux/fs.h>
- #include <linux/ext2_fs.h>
- #include <linux/sched.h>
- /*
- * Called when an inode is released. Note that this is different
- * from ext2_open_file: open gets called at every open, but release
- * gets called only when /all/ the files are closed.
- */
- static int ext2_release_file (struct inode * inode, struct file * filp)
- {
- if (filp->f_mode & FMODE_WRITE)
- ext2_discard_prealloc (inode);
- return 0;
- }
- /*
- * We have mostly NULL's here: the current defaults are ok for
- * the ext2 filesystem.
- */
- struct file_operations ext2_file_operations = {
- llseek: generic_file_llseek,
- read: generic_file_read,
- write: generic_file_write,
- ioctl: ext2_ioctl,
- mmap: generic_file_mmap,
- open: generic_file_open,
- release: ext2_release_file,
- fsync: ext2_sync_file,
- };
- struct inode_operations ext2_file_inode_operations = {
- truncate: ext2_truncate,
- };