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108 lines
2.8 KiB
108 lines
2.8 KiB
/* |
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* linux/fs/ext2/file.c |
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* |
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* Copyright (C) 1992, 1993, 1994, 1995 |
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* Remy Card (card@masi.ibp.fr) |
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* Laboratoire MASI - Institut Blaise Pascal |
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* Universite Pierre et Marie Curie (Paris VI) |
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* |
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* from |
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* |
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* linux/fs/minix/file.c |
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* |
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* Copyright (C) 1991, 1992 Linus Torvalds |
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* |
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* ext2 fs regular file handling primitives |
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* |
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* 64-bit file support on 64-bit platforms by Jakub Jelinek |
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* (jj@sunsite.ms.mff.cuni.cz) |
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*/ |
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#include <linux/time.h> |
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#include <linux/pagemap.h> |
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#include <linux/quotaops.h> |
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#include "ext2.h" |
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#include "xattr.h" |
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#include "acl.h" |
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/* |
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* Called when filp is released. This happens when all file descriptors |
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* for a single struct file are closed. Note that different open() calls |
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* for the same file yield different struct file structures. |
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*/ |
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static int ext2_release_file (struct inode * inode, struct file * filp) |
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{ |
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if (filp->f_mode & FMODE_WRITE) { |
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mutex_lock(&EXT2_I(inode)->truncate_mutex); |
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ext2_discard_reservation(inode); |
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mutex_unlock(&EXT2_I(inode)->truncate_mutex); |
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} |
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return 0; |
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} |
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int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
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{ |
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int ret; |
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struct super_block *sb = file->f_mapping->host->i_sb; |
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struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping; |
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ret = generic_file_fsync(file, start, end, datasync); |
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if (ret == -EIO || test_and_clear_bit(AS_EIO, &mapping->flags)) { |
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/* We don't really know where the IO error happened... */ |
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ext2_error(sb, __func__, |
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"detected IO error when writing metadata buffers"); |
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ret = -EIO; |
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} |
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return ret; |
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} |
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/* |
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* We have mostly NULL's here: the current defaults are ok for |
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* the ext2 filesystem. |
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*/ |
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const struct file_operations ext2_file_operations = { |
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.llseek = generic_file_llseek, |
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.read = new_sync_read, |
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.write = new_sync_write, |
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.read_iter = generic_file_read_iter, |
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.write_iter = generic_file_write_iter, |
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.unlocked_ioctl = ext2_ioctl, |
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#ifdef CONFIG_COMPAT |
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.compat_ioctl = ext2_compat_ioctl, |
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#endif |
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.mmap = generic_file_mmap, |
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.open = dquot_file_open, |
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.release = ext2_release_file, |
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.fsync = ext2_fsync, |
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.splice_read = generic_file_splice_read, |
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.splice_write = iter_file_splice_write, |
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}; |
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#ifdef CONFIG_EXT2_FS_XIP |
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const struct file_operations ext2_xip_file_operations = { |
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.llseek = generic_file_llseek, |
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.read = xip_file_read, |
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.write = xip_file_write, |
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.unlocked_ioctl = ext2_ioctl, |
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#ifdef CONFIG_COMPAT |
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.compat_ioctl = ext2_compat_ioctl, |
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#endif |
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.mmap = xip_file_mmap, |
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.open = dquot_file_open, |
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.release = ext2_release_file, |
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.fsync = ext2_fsync, |
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}; |
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#endif |
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const struct inode_operations ext2_file_inode_operations = { |
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#ifdef CONFIG_EXT2_FS_XATTR |
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.setxattr = generic_setxattr, |
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.getxattr = generic_getxattr, |
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.listxattr = ext2_listxattr, |
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.removexattr = generic_removexattr, |
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#endif |
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.setattr = ext2_setattr, |
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.get_acl = ext2_get_acl, |
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.set_acl = ext2_set_acl, |
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.fiemap = ext2_fiemap, |
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};
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