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fs/ext2/file.c
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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/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" #include "xattr.h" #include "acl.h" /* |
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* Called when filp is released. This happens when all file descriptors * for a single struct file are closed. Note that different open() calls * for the same file yield different struct file structures. |
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*/ static int ext2_release_file (struct inode * inode, struct file * filp) { |
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if (filp->f_mode & FMODE_WRITE) { mutex_lock(&EXT2_I(inode)->truncate_mutex); ext2_discard_reservation(inode); mutex_unlock(&EXT2_I(inode)->truncate_mutex); } |
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return 0; } |
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int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
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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)) { /* We don't really know where the IO error happened... */ ext2_error(sb, __func__, "detected IO error when writing metadata buffers"); ret = -EIO; } return ret; } |
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/* * We have mostly NULL's here: the current defaults are ok for * the ext2 filesystem. */ |
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const struct file_operations ext2_file_operations = { |
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.llseek = generic_file_llseek, |
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.read = do_sync_read, .write = do_sync_write, |
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.aio_read = generic_file_aio_read, .aio_write = generic_file_aio_write, |
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.unlocked_ioctl = ext2_ioctl, |
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#ifdef CONFIG_COMPAT .compat_ioctl = ext2_compat_ioctl, #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, .splice_write = generic_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, .write = xip_file_write, |
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.unlocked_ioctl = ext2_ioctl, |
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#ifdef CONFIG_COMPAT .compat_ioctl = ext2_compat_ioctl, #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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}; #endif |
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const struct inode_operations ext2_file_inode_operations = { |
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#ifdef CONFIG_EXT2_FS_XATTR .setxattr = generic_setxattr, .getxattr = generic_getxattr, .listxattr = ext2_listxattr, .removexattr = generic_removexattr, #endif .setattr = ext2_setattr, |
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.get_acl = ext2_get_acl, |
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.fiemap = ext2_fiemap, |
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}; |