11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/ext2/file.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1992, 1993, 1994, 1995 51da177e4SLinus Torvalds * Remy Card (card@masi.ibp.fr) 61da177e4SLinus Torvalds * Laboratoire MASI - Institut Blaise Pascal 71da177e4SLinus Torvalds * Universite Pierre et Marie Curie (Paris VI) 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * from 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * linux/fs/minix/file.c 121da177e4SLinus Torvalds * 131da177e4SLinus Torvalds * Copyright (C) 1991, 1992 Linus Torvalds 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * ext2 fs regular file handling primitives 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * 64-bit file support on 64-bit platforms by Jakub Jelinek 181da177e4SLinus Torvalds * (jj@sunsite.ms.mff.cuni.cz) 191da177e4SLinus Torvalds */ 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds #include <linux/time.h> 2248bde86dSJan Kara #include <linux/pagemap.h> 231da177e4SLinus Torvalds #include "ext2.h" 241da177e4SLinus Torvalds #include "xattr.h" 251da177e4SLinus Torvalds #include "acl.h" 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds /* 28a6739af8SJan Kara * Called when filp is released. This happens when all file descriptors 29a6739af8SJan Kara * for a single struct file are closed. Note that different open() calls 30a6739af8SJan Kara * for the same file yield different struct file structures. 311da177e4SLinus Torvalds */ 321da177e4SLinus Torvalds static int ext2_release_file (struct inode * inode, struct file * filp) 331da177e4SLinus Torvalds { 34a686cd89SMartin J. Bligh if (filp->f_mode & FMODE_WRITE) { 35a686cd89SMartin J. Bligh mutex_lock(&EXT2_I(inode)->truncate_mutex); 36a686cd89SMartin J. Bligh ext2_discard_reservation(inode); 37a686cd89SMartin J. Bligh mutex_unlock(&EXT2_I(inode)->truncate_mutex); 38a686cd89SMartin J. Bligh } 391da177e4SLinus Torvalds return 0; 401da177e4SLinus Torvalds } 411da177e4SLinus Torvalds 4248bde86dSJan Kara int ext2_fsync(struct file *file, struct dentry *dentry, int datasync) 4348bde86dSJan Kara { 4448bde86dSJan Kara int ret; 4548bde86dSJan Kara struct super_block *sb = dentry->d_inode->i_sb; 4648bde86dSJan Kara struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping; 4748bde86dSJan Kara 4848bde86dSJan Kara ret = simple_fsync(file, dentry, datasync); 4948bde86dSJan Kara if (ret == -EIO || test_and_clear_bit(AS_EIO, &mapping->flags)) { 5048bde86dSJan Kara /* We don't really know where the IO error happened... */ 5148bde86dSJan Kara ext2_error(sb, __func__, 5248bde86dSJan Kara "detected IO error when writing metadata buffers"); 5348bde86dSJan Kara ret = -EIO; 5448bde86dSJan Kara } 5548bde86dSJan Kara return ret; 5648bde86dSJan Kara } 5748bde86dSJan Kara 581da177e4SLinus Torvalds /* 591da177e4SLinus Torvalds * We have mostly NULL's here: the current defaults are ok for 601da177e4SLinus Torvalds * the ext2 filesystem. 611da177e4SLinus Torvalds */ 624b6f5d20SArjan van de Ven const struct file_operations ext2_file_operations = { 631da177e4SLinus Torvalds .llseek = generic_file_llseek, 64543ade1fSBadari Pulavarty .read = do_sync_read, 65543ade1fSBadari Pulavarty .write = do_sync_write, 661da177e4SLinus Torvalds .aio_read = generic_file_aio_read, 671da177e4SLinus Torvalds .aio_write = generic_file_aio_write, 6814f9f7b2SAndi Kleen .unlocked_ioctl = ext2_ioctl, 69e322ff07SDavid Howells #ifdef CONFIG_COMPAT 70e322ff07SDavid Howells .compat_ioctl = ext2_compat_ioctl, 71e322ff07SDavid Howells #endif 721da177e4SLinus Torvalds .mmap = generic_file_mmap, 731da177e4SLinus Torvalds .open = generic_file_open, 741da177e4SLinus Torvalds .release = ext2_release_file, 7548bde86dSJan Kara .fsync = ext2_fsync, 765274f052SJens Axboe .splice_read = generic_file_splice_read, 775274f052SJens Axboe .splice_write = generic_file_splice_write, 781da177e4SLinus Torvalds }; 791da177e4SLinus Torvalds 806d79125bSCarsten Otte #ifdef CONFIG_EXT2_FS_XIP 814b6f5d20SArjan van de Ven const struct file_operations ext2_xip_file_operations = { 826d79125bSCarsten Otte .llseek = generic_file_llseek, 83eb6fe0c3SCarsten Otte .read = xip_file_read, 84eb6fe0c3SCarsten Otte .write = xip_file_write, 8514f9f7b2SAndi Kleen .unlocked_ioctl = ext2_ioctl, 86e322ff07SDavid Howells #ifdef CONFIG_COMPAT 87e322ff07SDavid Howells .compat_ioctl = ext2_compat_ioctl, 88e322ff07SDavid Howells #endif 896d79125bSCarsten Otte .mmap = xip_file_mmap, 906d79125bSCarsten Otte .open = generic_file_open, 916d79125bSCarsten Otte .release = ext2_release_file, 9248bde86dSJan Kara .fsync = ext2_fsync, 936d79125bSCarsten Otte }; 946d79125bSCarsten Otte #endif 956d79125bSCarsten Otte 96754661f1SArjan van de Ven const struct inode_operations ext2_file_inode_operations = { 971da177e4SLinus Torvalds .truncate = ext2_truncate, 981da177e4SLinus Torvalds #ifdef CONFIG_EXT2_FS_XATTR 991da177e4SLinus Torvalds .setxattr = generic_setxattr, 1001da177e4SLinus Torvalds .getxattr = generic_getxattr, 1011da177e4SLinus Torvalds .listxattr = ext2_listxattr, 1021da177e4SLinus Torvalds .removexattr = generic_removexattr, 1031da177e4SLinus Torvalds #endif 1041da177e4SLinus Torvalds .setattr = ext2_setattr, 1051d5ccd1cSLinus Torvalds .check_acl = ext2_check_acl, 10668c9d702SJosef Bacik .fiemap = ext2_fiemap, 1071da177e4SLinus Torvalds }; 108