1237fead6SMichael Halcrow /** 2237fead6SMichael Halcrow * eCryptfs: Linux filesystem encryption layer 3237fead6SMichael Halcrow * 4237fead6SMichael Halcrow * Copyright (C) 1997-2004 Erez Zadok 5237fead6SMichael Halcrow * Copyright (C) 2001-2004 Stony Brook University 6dd2a3b7aSMichael Halcrow * Copyright (C) 2004-2007 International Business Machines Corp. 7237fead6SMichael Halcrow * Author(s): Michael A. Halcrow <mhalcrow@us.ibm.com> 8237fead6SMichael Halcrow * Michael C. Thompson <mcthomps@us.ibm.com> 9237fead6SMichael Halcrow * 10237fead6SMichael Halcrow * This program is free software; you can redistribute it and/or 11237fead6SMichael Halcrow * modify it under the terms of the GNU General Public License as 12237fead6SMichael Halcrow * published by the Free Software Foundation; either version 2 of the 13237fead6SMichael Halcrow * License, or (at your option) any later version. 14237fead6SMichael Halcrow * 15237fead6SMichael Halcrow * This program is distributed in the hope that it will be useful, but 16237fead6SMichael Halcrow * WITHOUT ANY WARRANTY; without even the implied warranty of 17237fead6SMichael Halcrow * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18237fead6SMichael Halcrow * General Public License for more details. 19237fead6SMichael Halcrow * 20237fead6SMichael Halcrow * You should have received a copy of the GNU General Public License 21237fead6SMichael Halcrow * along with this program; if not, write to the Free Software 22237fead6SMichael Halcrow * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 23237fead6SMichael Halcrow * 02111-1307, USA. 24237fead6SMichael Halcrow */ 25237fead6SMichael Halcrow 26237fead6SMichael Halcrow #include <linux/file.h> 27237fead6SMichael Halcrow #include <linux/poll.h> 285a0e3ad6STejun Heo #include <linux/slab.h> 29237fead6SMichael Halcrow #include <linux/mount.h> 30237fead6SMichael Halcrow #include <linux/pagemap.h> 31237fead6SMichael Halcrow #include <linux/security.h> 32237fead6SMichael Halcrow #include <linux/compat.h> 330cc72dc7SJosef "Jeff" Sipek #include <linux/fs_stack.h> 34a27bb332SKent Overstreet #include <linux/aio.h> 35237fead6SMichael Halcrow #include "ecryptfs_kernel.h" 36237fead6SMichael Halcrow 37237fead6SMichael Halcrow /** 38237fead6SMichael Halcrow * ecryptfs_read_update_atime 39237fead6SMichael Halcrow * 40237fead6SMichael Halcrow * generic_file_read updates the atime of upper layer inode. But, it 41237fead6SMichael Halcrow * doesn't give us a chance to update the atime of the lower layer 42237fead6SMichael Halcrow * inode. This function is a wrapper to generic_file_read. It 43237fead6SMichael Halcrow * updates the atime of the lower level inode if generic_file_read 44237fead6SMichael Halcrow * returns without any errors. This is to be used only for file reads. 45237fead6SMichael Halcrow * The function to be used for directory reads is ecryptfs_read. 46237fead6SMichael Halcrow */ 47237fead6SMichael Halcrow static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb, 48237fead6SMichael Halcrow const struct iovec *iov, 49237fead6SMichael Halcrow unsigned long nr_segs, loff_t pos) 50237fead6SMichael Halcrow { 5138a708d7SEdward Shishkin ssize_t rc; 5268ac1234SAl Viro struct path lower; 53237fead6SMichael Halcrow struct file *file = iocb->ki_filp; 54237fead6SMichael Halcrow 55237fead6SMichael Halcrow rc = generic_file_aio_read(iocb, iov, nr_segs, pos); 56237fead6SMichael Halcrow /* 57237fead6SMichael Halcrow * Even though this is a async interface, we need to wait 58237fead6SMichael Halcrow * for IO to finish to update atime 59237fead6SMichael Halcrow */ 60237fead6SMichael Halcrow if (-EIOCBQUEUED == rc) 61237fead6SMichael Halcrow rc = wait_on_sync_kiocb(iocb); 62237fead6SMichael Halcrow if (rc >= 0) { 6368ac1234SAl Viro lower.dentry = ecryptfs_dentry_to_lower(file->f_path.dentry); 6468ac1234SAl Viro lower.mnt = ecryptfs_dentry_to_lower_mnt(file->f_path.dentry); 6568ac1234SAl Viro touch_atime(&lower); 66237fead6SMichael Halcrow } 67237fead6SMichael Halcrow return rc; 68237fead6SMichael Halcrow } 69237fead6SMichael Halcrow 70237fead6SMichael Halcrow struct ecryptfs_getdents_callback { 715c0ba4e0SAl Viro struct dir_context ctx; 72*2de5f059SAl Viro struct dir_context *caller; 73237fead6SMichael Halcrow struct dentry *dentry; 74237fead6SMichael Halcrow int filldir_called; 75237fead6SMichael Halcrow int entries_written; 76237fead6SMichael Halcrow }; 77237fead6SMichael Halcrow 787d6c7045SMichael Halcrow /* Inspired by generic filldir in fs/readdir.c */ 79237fead6SMichael Halcrow static int 80addd65adSMichael Halcrow ecryptfs_filldir(void *dirent, const char *lower_name, int lower_namelen, 81addd65adSMichael Halcrow loff_t offset, u64 ino, unsigned int d_type) 82237fead6SMichael Halcrow { 83237fead6SMichael Halcrow struct ecryptfs_getdents_callback *buf = 84237fead6SMichael Halcrow (struct ecryptfs_getdents_callback *)dirent; 85a8f12864SMichael Halcrow size_t name_size; 86addd65adSMichael Halcrow char *name; 87237fead6SMichael Halcrow int rc; 88237fead6SMichael Halcrow 89237fead6SMichael Halcrow buf->filldir_called++; 90addd65adSMichael Halcrow rc = ecryptfs_decode_and_decrypt_filename(&name, &name_size, 91addd65adSMichael Halcrow buf->dentry, lower_name, 92addd65adSMichael Halcrow lower_namelen); 93addd65adSMichael Halcrow if (rc) { 94addd65adSMichael Halcrow printk(KERN_ERR "%s: Error attempting to decode and decrypt " 95addd65adSMichael Halcrow "filename [%s]; rc = [%d]\n", __func__, lower_name, 96addd65adSMichael Halcrow rc); 97237fead6SMichael Halcrow goto out; 98237fead6SMichael Halcrow } 99*2de5f059SAl Viro buf->caller->pos = buf->ctx.pos; 100*2de5f059SAl Viro rc = !dir_emit(buf->caller, name, name_size, ino, d_type); 101addd65adSMichael Halcrow kfree(name); 102*2de5f059SAl Viro if (!rc) 103237fead6SMichael Halcrow buf->entries_written++; 104237fead6SMichael Halcrow out: 105237fead6SMichael Halcrow return rc; 106237fead6SMichael Halcrow } 107237fead6SMichael Halcrow 108237fead6SMichael Halcrow /** 109237fead6SMichael Halcrow * ecryptfs_readdir 110addd65adSMichael Halcrow * @file: The eCryptfs directory file 111*2de5f059SAl Viro * @ctx: The actor to feed the entries to 112237fead6SMichael Halcrow */ 113*2de5f059SAl Viro static int ecryptfs_readdir(struct file *file, struct dir_context *ctx) 114237fead6SMichael Halcrow { 115237fead6SMichael Halcrow int rc; 116237fead6SMichael Halcrow struct file *lower_file; 117237fead6SMichael Halcrow struct inode *inode; 118*2de5f059SAl Viro struct ecryptfs_getdents_callback buf = { 119*2de5f059SAl Viro .ctx.actor = ecryptfs_filldir, 120*2de5f059SAl Viro .caller = ctx, 121*2de5f059SAl Viro .dentry = file->f_path.dentry 122*2de5f059SAl Viro }; 123237fead6SMichael Halcrow lower_file = ecryptfs_file_to_lower(file); 124*2de5f059SAl Viro lower_file->f_pos = ctx->pos; 125496ad9aaSAl Viro inode = file_inode(file); 1265c0ba4e0SAl Viro rc = iterate_dir(lower_file, &buf.ctx); 127*2de5f059SAl Viro ctx->pos = buf.ctx.pos; 1287d6c7045SMichael Halcrow if (rc < 0) 1297d6c7045SMichael Halcrow goto out; 1307d6c7045SMichael Halcrow if (buf.filldir_called && !buf.entries_written) 1317d6c7045SMichael Halcrow goto out; 132237fead6SMichael Halcrow if (rc >= 0) 1337d6c7045SMichael Halcrow fsstack_copy_attr_atime(inode, 134496ad9aaSAl Viro file_inode(lower_file)); 1357d6c7045SMichael Halcrow out: 136237fead6SMichael Halcrow return rc; 137237fead6SMichael Halcrow } 138237fead6SMichael Halcrow 139237fead6SMichael Halcrow struct kmem_cache *ecryptfs_file_info_cache; 140237fead6SMichael Halcrow 141e3ccaa97STyler Hicks static int read_or_initialize_metadata(struct dentry *dentry) 142e3ccaa97STyler Hicks { 143e3ccaa97STyler Hicks struct inode *inode = dentry->d_inode; 144e3ccaa97STyler Hicks struct ecryptfs_mount_crypt_stat *mount_crypt_stat; 145e3ccaa97STyler Hicks struct ecryptfs_crypt_stat *crypt_stat; 146e3ccaa97STyler Hicks int rc; 147e3ccaa97STyler Hicks 148e3ccaa97STyler Hicks crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat; 149e3ccaa97STyler Hicks mount_crypt_stat = &ecryptfs_superblock_to_private( 150e3ccaa97STyler Hicks inode->i_sb)->mount_crypt_stat; 151e3ccaa97STyler Hicks mutex_lock(&crypt_stat->cs_mutex); 152e3ccaa97STyler Hicks 153e3ccaa97STyler Hicks if (crypt_stat->flags & ECRYPTFS_POLICY_APPLIED && 154e3ccaa97STyler Hicks crypt_stat->flags & ECRYPTFS_KEY_VALID) { 155e3ccaa97STyler Hicks rc = 0; 156e3ccaa97STyler Hicks goto out; 157e3ccaa97STyler Hicks } 158e3ccaa97STyler Hicks 159e3ccaa97STyler Hicks rc = ecryptfs_read_metadata(dentry); 160e3ccaa97STyler Hicks if (!rc) 161e3ccaa97STyler Hicks goto out; 162e3ccaa97STyler Hicks 163e3ccaa97STyler Hicks if (mount_crypt_stat->flags & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED) { 164e3ccaa97STyler Hicks crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED 165e3ccaa97STyler Hicks | ECRYPTFS_ENCRYPTED); 166e3ccaa97STyler Hicks rc = 0; 167e3ccaa97STyler Hicks goto out; 168e3ccaa97STyler Hicks } 169e3ccaa97STyler Hicks 170e3ccaa97STyler Hicks if (!(mount_crypt_stat->flags & ECRYPTFS_XATTR_METADATA_ENABLED) && 171e3ccaa97STyler Hicks !i_size_read(ecryptfs_inode_to_lower(inode))) { 172e3ccaa97STyler Hicks rc = ecryptfs_initialize_file(dentry, inode); 173e3ccaa97STyler Hicks if (!rc) 174e3ccaa97STyler Hicks goto out; 175e3ccaa97STyler Hicks } 176e3ccaa97STyler Hicks 177e3ccaa97STyler Hicks rc = -EIO; 178e3ccaa97STyler Hicks out: 179e3ccaa97STyler Hicks mutex_unlock(&crypt_stat->cs_mutex); 180e3ccaa97STyler Hicks return rc; 181e3ccaa97STyler Hicks } 182e3ccaa97STyler Hicks 183237fead6SMichael Halcrow /** 184237fead6SMichael Halcrow * ecryptfs_open 185237fead6SMichael Halcrow * @inode: inode speciying file to open 186237fead6SMichael Halcrow * @file: Structure to return filled in 187237fead6SMichael Halcrow * 188237fead6SMichael Halcrow * Opens the file specified by inode. 189237fead6SMichael Halcrow * 190237fead6SMichael Halcrow * Returns zero on success; non-zero otherwise 191237fead6SMichael Halcrow */ 192237fead6SMichael Halcrow static int ecryptfs_open(struct inode *inode, struct file *file) 193237fead6SMichael Halcrow { 194237fead6SMichael Halcrow int rc = 0; 195237fead6SMichael Halcrow struct ecryptfs_crypt_stat *crypt_stat = NULL; 196237fead6SMichael Halcrow struct ecryptfs_mount_crypt_stat *mount_crypt_stat; 197bd243a4bSJosef "Jeff" Sipek struct dentry *ecryptfs_dentry = file->f_path.dentry; 198237fead6SMichael Halcrow /* Private value of ecryptfs_dentry allocated in 199237fead6SMichael Halcrow * ecryptfs_lookup() */ 200237fead6SMichael Halcrow struct ecryptfs_file_info *file_info; 201237fead6SMichael Halcrow 202e77a56ddSMichael Halcrow mount_crypt_stat = &ecryptfs_superblock_to_private( 203e77a56ddSMichael Halcrow ecryptfs_dentry->d_sb)->mount_crypt_stat; 204e77a56ddSMichael Halcrow if ((mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED) 205e77a56ddSMichael Halcrow && ((file->f_flags & O_WRONLY) || (file->f_flags & O_RDWR) 206e77a56ddSMichael Halcrow || (file->f_flags & O_CREAT) || (file->f_flags & O_TRUNC) 207e77a56ddSMichael Halcrow || (file->f_flags & O_APPEND))) { 208e77a56ddSMichael Halcrow printk(KERN_WARNING "Mount has encrypted view enabled; " 209e77a56ddSMichael Halcrow "files may only be read\n"); 210e77a56ddSMichael Halcrow rc = -EPERM; 211e77a56ddSMichael Halcrow goto out; 212e77a56ddSMichael Halcrow } 213237fead6SMichael Halcrow /* Released in ecryptfs_release or end of function if failure */ 214c3762229SRobert P. J. Day file_info = kmem_cache_zalloc(ecryptfs_file_info_cache, GFP_KERNEL); 215237fead6SMichael Halcrow ecryptfs_set_file_private(file, file_info); 216237fead6SMichael Halcrow if (!file_info) { 217237fead6SMichael Halcrow ecryptfs_printk(KERN_ERR, 218237fead6SMichael Halcrow "Error attempting to allocate memory\n"); 219237fead6SMichael Halcrow rc = -ENOMEM; 220237fead6SMichael Halcrow goto out; 221237fead6SMichael Halcrow } 222237fead6SMichael Halcrow crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat; 223237fead6SMichael Halcrow mutex_lock(&crypt_stat->cs_mutex); 224e2bd99ecSMichael Halcrow if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED)) { 225237fead6SMichael Halcrow ecryptfs_printk(KERN_DEBUG, "Setting flags for stat...\n"); 226237fead6SMichael Halcrow /* Policy code enabled in future release */ 2272ed92554SMichael Halcrow crypt_stat->flags |= (ECRYPTFS_POLICY_APPLIED 2282ed92554SMichael Halcrow | ECRYPTFS_ENCRYPTED); 229237fead6SMichael Halcrow } 230237fead6SMichael Halcrow mutex_unlock(&crypt_stat->cs_mutex); 2313b06b3ebSTyler Hicks rc = ecryptfs_get_lower_file(ecryptfs_dentry, inode); 23272b55fffSMichael Halcrow if (rc) { 23372b55fffSMichael Halcrow printk(KERN_ERR "%s: Error attempting to initialize " 234332ab16fSTyler Hicks "the lower file for the dentry with name " 23572b55fffSMichael Halcrow "[%s]; rc = [%d]\n", __func__, 23672b55fffSMichael Halcrow ecryptfs_dentry->d_name.name, rc); 237ceeab929SJulia Lawall goto out_free; 23872b55fffSMichael Halcrow } 2390abe1169SRoberto Sassu if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_ACCMODE) 2400abe1169SRoberto Sassu == O_RDONLY && (file->f_flags & O_ACCMODE) != O_RDONLY) { 241e27759d7SErez Zadok rc = -EPERM; 242332ab16fSTyler Hicks printk(KERN_WARNING "%s: Lower file is RO; eCryptfs " 243e27759d7SErez Zadok "file must hence be opened RO\n", __func__); 244332ab16fSTyler Hicks goto out_put; 245e27759d7SErez Zadok } 2462ed92554SMichael Halcrow ecryptfs_set_file_lower( 2472ed92554SMichael Halcrow file, ecryptfs_inode_to_private(inode)->lower_file); 248237fead6SMichael Halcrow if (S_ISDIR(ecryptfs_dentry->d_inode->i_mode)) { 249237fead6SMichael Halcrow ecryptfs_printk(KERN_DEBUG, "This is a directory\n"); 2502f9b12a3SMichael Halcrow mutex_lock(&crypt_stat->cs_mutex); 251e2bd99ecSMichael Halcrow crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED); 2522f9b12a3SMichael Halcrow mutex_unlock(&crypt_stat->cs_mutex); 253237fead6SMichael Halcrow rc = 0; 254237fead6SMichael Halcrow goto out; 255237fead6SMichael Halcrow } 256e3ccaa97STyler Hicks rc = read_or_initialize_metadata(ecryptfs_dentry); 257e3ccaa97STyler Hicks if (rc) 258332ab16fSTyler Hicks goto out_put; 259888d57bbSJoe Perches ecryptfs_printk(KERN_DEBUG, "inode w/ addr = [0x%p], i_ino = " 260888d57bbSJoe Perches "[0x%.16lx] size: [0x%.16llx]\n", inode, inode->i_ino, 261888d57bbSJoe Perches (unsigned long long)i_size_read(inode)); 262237fead6SMichael Halcrow goto out; 263332ab16fSTyler Hicks out_put: 264332ab16fSTyler Hicks ecryptfs_put_lower_file(inode); 2652ed92554SMichael Halcrow out_free: 266237fead6SMichael Halcrow kmem_cache_free(ecryptfs_file_info_cache, 267237fead6SMichael Halcrow ecryptfs_file_to_private(file)); 268237fead6SMichael Halcrow out: 269237fead6SMichael Halcrow return rc; 270237fead6SMichael Halcrow } 271237fead6SMichael Halcrow 272237fead6SMichael Halcrow static int ecryptfs_flush(struct file *file, fl_owner_t td) 273237fead6SMichael Halcrow { 27464e6651dSTyler Hicks struct file *lower_file = ecryptfs_file_to_lower(file); 27564e6651dSTyler Hicks 27664e6651dSTyler Hicks if (lower_file->f_op && lower_file->f_op->flush) { 27764e6651dSTyler Hicks filemap_write_and_wait(file->f_mapping); 27864e6651dSTyler Hicks return lower_file->f_op->flush(lower_file, td); 27964e6651dSTyler Hicks } 28064e6651dSTyler Hicks 28164e6651dSTyler Hicks return 0; 282237fead6SMichael Halcrow } 283237fead6SMichael Halcrow 284237fead6SMichael Halcrow static int ecryptfs_release(struct inode *inode, struct file *file) 285237fead6SMichael Halcrow { 286332ab16fSTyler Hicks ecryptfs_put_lower_file(inode); 2872ed92554SMichael Halcrow kmem_cache_free(ecryptfs_file_info_cache, 2882ed92554SMichael Halcrow ecryptfs_file_to_private(file)); 2892ed92554SMichael Halcrow return 0; 290237fead6SMichael Halcrow } 291237fead6SMichael Halcrow 292237fead6SMichael Halcrow static int 29302c24a82SJosef Bacik ecryptfs_fsync(struct file *file, loff_t start, loff_t end, int datasync) 294237fead6SMichael Halcrow { 295bc5abcf7STyler Hicks int rc; 296bc5abcf7STyler Hicks 297bc5abcf7STyler Hicks rc = filemap_write_and_wait(file->f_mapping); 298bc5abcf7STyler Hicks if (rc) 299bc5abcf7STyler Hicks return rc; 300bc5abcf7STyler Hicks 301821f7494STyler Hicks return vfs_fsync(ecryptfs_file_to_lower(file), datasync); 302237fead6SMichael Halcrow } 303237fead6SMichael Halcrow 304237fead6SMichael Halcrow static int ecryptfs_fasync(int fd, struct file *file, int flag) 305237fead6SMichael Halcrow { 306237fead6SMichael Halcrow int rc = 0; 307237fead6SMichael Halcrow struct file *lower_file = NULL; 308237fead6SMichael Halcrow 309237fead6SMichael Halcrow lower_file = ecryptfs_file_to_lower(file); 310237fead6SMichael Halcrow if (lower_file->f_op && lower_file->f_op->fasync) 311237fead6SMichael Halcrow rc = lower_file->f_op->fasync(fd, lower_file, flag); 312237fead6SMichael Halcrow return rc; 313237fead6SMichael Halcrow } 314237fead6SMichael Halcrow 315c43f7b8fSTyler Hicks static long 316c43f7b8fSTyler Hicks ecryptfs_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 317c43f7b8fSTyler Hicks { 318c43f7b8fSTyler Hicks struct file *lower_file = NULL; 319c43f7b8fSTyler Hicks long rc = -ENOTTY; 320c43f7b8fSTyler Hicks 321c43f7b8fSTyler Hicks if (ecryptfs_file_to_private(file)) 322c43f7b8fSTyler Hicks lower_file = ecryptfs_file_to_lower(file); 323c43f7b8fSTyler Hicks if (lower_file && lower_file->f_op && lower_file->f_op->unlocked_ioctl) 324c43f7b8fSTyler Hicks rc = lower_file->f_op->unlocked_ioctl(lower_file, cmd, arg); 325c43f7b8fSTyler Hicks return rc; 326c43f7b8fSTyler Hicks } 327c43f7b8fSTyler Hicks 328c43f7b8fSTyler Hicks #ifdef CONFIG_COMPAT 329c43f7b8fSTyler Hicks static long 330c43f7b8fSTyler Hicks ecryptfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 331c43f7b8fSTyler Hicks { 332c43f7b8fSTyler Hicks struct file *lower_file = NULL; 333c43f7b8fSTyler Hicks long rc = -ENOIOCTLCMD; 334c43f7b8fSTyler Hicks 335c43f7b8fSTyler Hicks if (ecryptfs_file_to_private(file)) 336c43f7b8fSTyler Hicks lower_file = ecryptfs_file_to_lower(file); 337c43f7b8fSTyler Hicks if (lower_file && lower_file->f_op && lower_file->f_op->compat_ioctl) 338c43f7b8fSTyler Hicks rc = lower_file->f_op->compat_ioctl(lower_file, cmd, arg); 339c43f7b8fSTyler Hicks return rc; 340c43f7b8fSTyler Hicks } 341c43f7b8fSTyler Hicks #endif 342237fead6SMichael Halcrow 343237fead6SMichael Halcrow const struct file_operations ecryptfs_dir_fops = { 344*2de5f059SAl Viro .iterate = ecryptfs_readdir, 345323ef68fSAndy Whitcroft .read = generic_read_dir, 346c43f7b8fSTyler Hicks .unlocked_ioctl = ecryptfs_unlocked_ioctl, 347c43f7b8fSTyler Hicks #ifdef CONFIG_COMPAT 348c43f7b8fSTyler Hicks .compat_ioctl = ecryptfs_compat_ioctl, 349c43f7b8fSTyler Hicks #endif 350237fead6SMichael Halcrow .open = ecryptfs_open, 351237fead6SMichael Halcrow .flush = ecryptfs_flush, 352237fead6SMichael Halcrow .release = ecryptfs_release, 353237fead6SMichael Halcrow .fsync = ecryptfs_fsync, 354237fead6SMichael Halcrow .fasync = ecryptfs_fasync, 355e9f6a99cSMichael Halcrow .splice_read = generic_file_splice_read, 3566038f373SArnd Bergmann .llseek = default_llseek, 357237fead6SMichael Halcrow }; 358237fead6SMichael Halcrow 359237fead6SMichael Halcrow const struct file_operations ecryptfs_main_fops = { 36053a2731fSMichael Halcrow .llseek = generic_file_llseek, 361237fead6SMichael Halcrow .read = do_sync_read, 362237fead6SMichael Halcrow .aio_read = ecryptfs_read_update_atime, 363237fead6SMichael Halcrow .write = do_sync_write, 364237fead6SMichael Halcrow .aio_write = generic_file_aio_write, 365*2de5f059SAl Viro .iterate = ecryptfs_readdir, 366c43f7b8fSTyler Hicks .unlocked_ioctl = ecryptfs_unlocked_ioctl, 367c43f7b8fSTyler Hicks #ifdef CONFIG_COMPAT 368c43f7b8fSTyler Hicks .compat_ioctl = ecryptfs_compat_ioctl, 369c43f7b8fSTyler Hicks #endif 370821f7494STyler Hicks .mmap = generic_file_mmap, 371237fead6SMichael Halcrow .open = ecryptfs_open, 372237fead6SMichael Halcrow .flush = ecryptfs_flush, 373237fead6SMichael Halcrow .release = ecryptfs_release, 374237fead6SMichael Halcrow .fsync = ecryptfs_fsync, 375237fead6SMichael Halcrow .fasync = ecryptfs_fasync, 376e9f6a99cSMichael Halcrow .splice_read = generic_file_splice_read, 377237fead6SMichael Halcrow }; 378