1 /* 2 * linux/fs/ext2/file.c 3 * 4 * Copyright (C) 1992, 1993, 1994, 1995 5 * Remy Card (card@masi.ibp.fr) 6 * Laboratoire MASI - Institut Blaise Pascal 7 * Universite Pierre et Marie Curie (Paris VI) 8 * 9 * from 10 * 11 * linux/fs/minix/file.c 12 * 13 * Copyright (C) 1991, 1992 Linus Torvalds 14 * 15 * ext2 fs regular file handling primitives 16 * 17 * 64-bit file support on 64-bit platforms by Jakub Jelinek 18 * (jj@sunsite.ms.mff.cuni.cz) 19 */ 20 21 #include <linux/time.h> 22 #include "ext2.h" 23 #include "xattr.h" 24 #include "acl.h" 25 26 /* 27 * Called when an inode is released. Note that this is different 28 * from ext2_open_file: open gets called at every open, but release 29 * gets called only when /all/ the files are closed. 30 */ 31 static int ext2_release_file (struct inode * inode, struct file * filp) 32 { 33 if (filp->f_mode & FMODE_WRITE) 34 ext2_discard_prealloc (inode); 35 return 0; 36 } 37 38 /* 39 * We have mostly NULL's here: the current defaults are ok for 40 * the ext2 filesystem. 41 */ 42 const struct file_operations ext2_file_operations = { 43 .llseek = generic_file_llseek, 44 .read = do_sync_read, 45 .write = do_sync_write, 46 .aio_read = generic_file_aio_read, 47 .aio_write = generic_file_aio_write, 48 .ioctl = ext2_ioctl, 49 #ifdef CONFIG_COMPAT 50 .compat_ioctl = ext2_compat_ioctl, 51 #endif 52 .mmap = generic_file_mmap, 53 .open = generic_file_open, 54 .release = ext2_release_file, 55 .fsync = ext2_sync_file, 56 .sendfile = generic_file_sendfile, 57 .splice_read = generic_file_splice_read, 58 .splice_write = generic_file_splice_write, 59 }; 60 61 #ifdef CONFIG_EXT2_FS_XIP 62 const struct file_operations ext2_xip_file_operations = { 63 .llseek = generic_file_llseek, 64 .read = xip_file_read, 65 .write = xip_file_write, 66 .ioctl = ext2_ioctl, 67 #ifdef CONFIG_COMPAT 68 .compat_ioctl = ext2_compat_ioctl, 69 #endif 70 .mmap = xip_file_mmap, 71 .open = generic_file_open, 72 .release = ext2_release_file, 73 .fsync = ext2_sync_file, 74 .sendfile = xip_file_sendfile, 75 }; 76 #endif 77 78 const struct inode_operations ext2_file_inode_operations = { 79 .truncate = ext2_truncate, 80 #ifdef CONFIG_EXT2_FS_XATTR 81 .setxattr = generic_setxattr, 82 .getxattr = generic_getxattr, 83 .listxattr = ext2_listxattr, 84 .removexattr = generic_removexattr, 85 #endif 86 .setattr = ext2_setattr, 87 .permission = ext2_permission, 88 }; 89