1a59d1b8e05ea (Thomas Gleixner 2019-05-27 08:55:05 +0200 1) // SPDX-License-Identifier: GPL-2.0-or-later
a62187eb1f483 (Lee Jones 2021-03-30 17:44:50 +0100 2) /*
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 3) * eCryptfs: Linux filesystem encryption layer
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 4) *
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 5) * Copyright (C) 1997-2004 Erez Zadok
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 6) * Copyright (C) 2001-2004 Stony Brook University
dd2a3b7ad98f8 (Michael Halcrow 2007-02-12 00:53:46 -0800 7) * Copyright (C) 2004-2007 International Business Machines Corp.
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 8) * Author(s): Michael A. Halcrow <mhalcrow@us.ibm.com>
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 9) * Michael C. Thompson <mcthomps@us.ibm.com>
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 10) */
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 11)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 12) #include <linux/file.h>
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 13) #include <linux/poll.h>
5a0e3ad6af866 (Tejun Heo 2010-03-24 17:04:11 +0900 14) #include <linux/slab.h>
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 15) #include <linux/mount.h>
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 16) #include <linux/pagemap.h>
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 17) #include <linux/security.h>
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 18) #include <linux/compat.h>
0cc72dc7f0501 (Josef "Jeff" Sipek 2006-12-08 02:36:31 -0800 19) #include <linux/fs_stack.h>
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 20) #include "ecryptfs_kernel.h"
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 21)
a62187eb1f483 (Lee Jones 2021-03-30 17:44:50 +0100 22) /*
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 23) * ecryptfs_read_update_atime
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 24) *
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 25) * generic_file_read updates the atime of upper layer inode. But, it
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 26) * doesn't give us a chance to update the atime of the lower layer
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 27) * inode. This function is a wrapper to generic_file_read. It
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 28) * updates the atime of the lower level inode if generic_file_read
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 29) * returns without any errors. This is to be used only for file reads.
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 30) * The function to be used for directory reads is ecryptfs_read.
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 31) */
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 32) static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb,
027978295d455 (Al Viro 2014-04-02 14:40:38 -0400 33) struct iov_iter *to)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 34) {
38a708d775947 (Edward Shishkin 2010-10-30 00:11:50 +0200 35) ssize_t rc;
cc18ec3c8f5dd (Matthew Wilcox 2013-06-15 07:55:59 -0400 36) struct path *path;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 37) struct file *file = iocb->ki_filp;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 38)
027978295d455 (Al Viro 2014-04-02 14:40:38 -0400 39) rc = generic_file_read_iter(iocb, to);
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 40) if (rc >= 0) {
cc18ec3c8f5dd (Matthew Wilcox 2013-06-15 07:55:59 -0400 41) path = ecryptfs_dentry_to_lower_path(file->f_path.dentry);
cc18ec3c8f5dd (Matthew Wilcox 2013-06-15 07:55:59 -0400 42) touch_atime(path);
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 43) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 44) return rc;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 45) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 46)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 47) struct ecryptfs_getdents_callback {
5c0ba4e0762e6 (Al Viro 2013-05-15 13:52:59 -0400 48) struct dir_context ctx;
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 49) struct dir_context *caller;
0747fdb2bd59d (Al Viro 2013-06-16 20:05:38 +0400 50) struct super_block *sb;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 51) int filldir_called;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 52) int entries_written;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 53) };
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 54)
7d6c7045581d3 (Michael Halcrow 2008-10-15 22:02:49 -0700 55) /* Inspired by generic filldir in fs/readdir.c */
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 56) static int
ac7576f4b1da8 (Miklos Szeredi 2014-10-30 17:37:34 +0100 57) ecryptfs_filldir(struct dir_context *ctx, const char *lower_name,
ac7576f4b1da8 (Miklos Szeredi 2014-10-30 17:37:34 +0100 58) int lower_namelen, loff_t offset, u64 ino, unsigned int d_type)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 59) {
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 60) struct ecryptfs_getdents_callback *buf =
ac7576f4b1da8 (Miklos Szeredi 2014-10-30 17:37:34 +0100 61) container_of(ctx, struct ecryptfs_getdents_callback, ctx);
a8f12864c52f8 (Michael Halcrow 2009-01-06 14:42:03 -0800 62) size_t name_size;
addd65ad8d19a (Michael Halcrow 2009-01-06 14:42:00 -0800 63) char *name;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 64) int rc;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 65)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 66) buf->filldir_called++;
addd65ad8d19a (Michael Halcrow 2009-01-06 14:42:00 -0800 67) rc = ecryptfs_decode_and_decrypt_filename(&name, &name_size,
0747fdb2bd59d (Al Viro 2013-06-16 20:05:38 +0400 68) buf->sb, lower_name,
addd65ad8d19a (Michael Halcrow 2009-01-06 14:42:00 -0800 69) lower_namelen);
addd65ad8d19a (Michael Halcrow 2009-01-06 14:42:00 -0800 70) if (rc) {
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 71) if (rc != -EINVAL) {
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 72) ecryptfs_printk(KERN_DEBUG,
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 73) "%s: Error attempting to decode and decrypt filename [%s]; rc = [%d]\n",
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 74) __func__, lower_name, rc);
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 75) return rc;
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 76) }
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 77)
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 78) /* Mask -EINVAL errors as these are most likely due a plaintext
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 79) * filename present in the lower filesystem despite filename
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 80) * encryption being enabled. One unavoidable example would be
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 81) * the "lost+found" dentry in the root directory of an Ext4
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 82) * filesystem.
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 83) */
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 84) return 0;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 85) }
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 86)
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 87) buf->caller->pos = buf->ctx.pos;
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 88) rc = !dir_emit(buf->caller, name, name_size, ino, d_type);
addd65ad8d19a (Michael Halcrow 2009-01-06 14:42:00 -0800 89) kfree(name);
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 90) if (!rc)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 91) buf->entries_written++;
e86281e700cca (Tyler Hicks 2018-03-28 23:41:52 +0000 92)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 93) return rc;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 94) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 95)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 96) /**
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 97) * ecryptfs_readdir
addd65ad8d19a (Michael Halcrow 2009-01-06 14:42:00 -0800 98) * @file: The eCryptfs directory file
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 99) * @ctx: The actor to feed the entries to
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 100) */
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 101) static int ecryptfs_readdir(struct file *file, struct dir_context *ctx)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 102) {
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 103) int rc;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 104) struct file *lower_file;
0747fdb2bd59d (Al Viro 2013-06-16 20:05:38 +0400 105) struct inode *inode = file_inode(file);
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 106) struct ecryptfs_getdents_callback buf = {
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 107) .ctx.actor = ecryptfs_filldir,
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 108) .caller = ctx,
0747fdb2bd59d (Al Viro 2013-06-16 20:05:38 +0400 109) .sb = inode->i_sb,
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 110) };
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 111) lower_file = ecryptfs_file_to_lower(file);
5c0ba4e0762e6 (Al Viro 2013-05-15 13:52:59 -0400 112) rc = iterate_dir(lower_file, &buf.ctx);
2de5f059c4422 (Al Viro 2013-05-22 21:23:40 -0400 113) ctx->pos = buf.ctx.pos;
7d6c7045581d3 (Michael Halcrow 2008-10-15 22:02:49 -0700 114) if (rc < 0)
7d6c7045581d3 (Michael Halcrow 2008-10-15 22:02:49 -0700 115) goto out;
7d6c7045581d3 (Michael Halcrow 2008-10-15 22:02:49 -0700 116) if (buf.filldir_called && !buf.entries_written)
7d6c7045581d3 (Michael Halcrow 2008-10-15 22:02:49 -0700 117) goto out;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 118) if (rc >= 0)
7d6c7045581d3 (Michael Halcrow 2008-10-15 22:02:49 -0700 119) fsstack_copy_attr_atime(inode,
496ad9aa8ef44 (Al Viro 2013-01-23 17:07:38 -0500 120) file_inode(lower_file));
7d6c7045581d3 (Michael Halcrow 2008-10-15 22:02:49 -0700 121) out:
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 122) return rc;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 123) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 124)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 125) struct kmem_cache *ecryptfs_file_info_cache;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 126)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 127) static int read_or_initialize_metadata(struct dentry *dentry)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 128) {
2b0143b5c986b (David Howells 2015-03-17 22:25:59 +0000 129) struct inode *inode = d_inode(dentry);
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 130) struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 131) struct ecryptfs_crypt_stat *crypt_stat;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 132) int rc;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 133)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 134) crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 135) mount_crypt_stat = &ecryptfs_superblock_to_private(
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 136) inode->i_sb)->mount_crypt_stat;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 137) mutex_lock(&crypt_stat->cs_mutex);
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 138)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 139) if (crypt_stat->flags & ECRYPTFS_POLICY_APPLIED &&
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 140) crypt_stat->flags & ECRYPTFS_KEY_VALID) {
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 141) rc = 0;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 142) goto out;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 143) }
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 144)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 145) rc = ecryptfs_read_metadata(dentry);
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 146) if (!rc)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 147) goto out;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 148)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 149) if (mount_crypt_stat->flags & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED) {
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 150) crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 151) | ECRYPTFS_ENCRYPTED);
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 152) rc = 0;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 153) goto out;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 154) }
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 155)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 156) if (!(mount_crypt_stat->flags & ECRYPTFS_XATTR_METADATA_ENABLED) &&
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 157) !i_size_read(ecryptfs_inode_to_lower(inode))) {
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 158) rc = ecryptfs_initialize_file(dentry, inode);
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 159) if (!rc)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 160) goto out;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 161) }
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 162)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 163) rc = -EIO;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 164) out:
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 165) mutex_unlock(&crypt_stat->cs_mutex);
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 166) return rc;
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 167) }
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 168)
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 169) static int ecryptfs_mmap(struct file *file, struct vm_area_struct *vma)
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 170) {
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 171) struct file *lower_file = ecryptfs_file_to_lower(file);
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 172) /*
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 173) * Don't allow mmap on top of file systems that don't support it
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 174) * natively. If FILESYSTEM_MAX_STACK_DEPTH > 2 or ecryptfs
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 175) * allows recursive mounting, this will need to be extended.
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 176) */
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 177) if (!lower_file->f_op->mmap)
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 178) return -ENODEV;
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 179) return generic_file_mmap(file, vma);
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 180) }
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 181)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 182) /**
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 183) * ecryptfs_open
40f0fd372a623 (Chris J Arges 2016-06-09 15:31:29 -0500 184) * @inode: inode specifying file to open
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 185) * @file: Structure to return filled in
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 186) *
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 187) * Opens the file specified by inode.
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 188) *
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 189) * Returns zero on success; non-zero otherwise
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 190) */
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 191) static int ecryptfs_open(struct inode *inode, struct file *file)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 192) {
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 193) int rc = 0;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 194) struct ecryptfs_crypt_stat *crypt_stat = NULL;
bd243a4b4b028 (Josef "Jeff" Sipek 2006-12-08 02:36:48 -0800 195) struct dentry *ecryptfs_dentry = file->f_path.dentry;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 196) /* Private value of ecryptfs_dentry allocated in
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 197) * ecryptfs_lookup() */
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 198) struct ecryptfs_file_info *file_info;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 199)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 200) /* Released in ecryptfs_release or end of function if failure */
c376222960ae9 (Robert P. J. Day 2007-02-10 01:45:03 -0800 201) file_info = kmem_cache_zalloc(ecryptfs_file_info_cache, GFP_KERNEL);
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 202) ecryptfs_set_file_private(file, file_info);
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 203) if (!file_info) {
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 204) ecryptfs_printk(KERN_ERR,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 205) "Error attempting to allocate memory\n");
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 206) rc = -ENOMEM;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 207) goto out;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 208) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 209) crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 210) mutex_lock(&crypt_stat->cs_mutex);
e2bd99ec5c0e2 (Michael Halcrow 2007-02-12 00:53:49 -0800 211) if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED)) {
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 212) ecryptfs_printk(KERN_DEBUG, "Setting flags for stat...\n");
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 213) /* Policy code enabled in future release */
2ed92554abc5c (Michael Halcrow 2007-10-16 01:28:10 -0700 214) crypt_stat->flags |= (ECRYPTFS_POLICY_APPLIED
2ed92554abc5c (Michael Halcrow 2007-10-16 01:28:10 -0700 215) | ECRYPTFS_ENCRYPTED);
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 216) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 217) mutex_unlock(&crypt_stat->cs_mutex);
3b06b3ebf4417 (Tyler Hicks 2011-05-24 03:49:02 -0500 218) rc = ecryptfs_get_lower_file(ecryptfs_dentry, inode);
27992890b02d3 (Roberto Sassu 2010-11-03 11:11:28 +0100 219) if (rc) {
27992890b02d3 (Roberto Sassu 2010-11-03 11:11:28 +0100 220) printk(KERN_ERR "%s: Error attempting to initialize "
332ab16f830f5 (Tyler Hicks 2011-04-14 15:35:11 -0500 221) "the lower file for the dentry with name "
9e78d14a9f641 (David Howells 2013-12-10 15:26:48 +0000 222) "[%pd]; rc = [%d]\n", __func__,
9e78d14a9f641 (David Howells 2013-12-10 15:26:48 +0000 223) ecryptfs_dentry, rc);
27992890b02d3 (Roberto Sassu 2010-11-03 11:11:28 +0100 224) goto out_free;
72b55fffd631a (Michael Halcrow 2008-07-23 21:30:07 -0700 225) }
0abe116947057 (Roberto Sassu 2010-11-03 11:11:34 +0100 226) if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_ACCMODE)
0abe116947057 (Roberto Sassu 2010-11-03 11:11:34 +0100 227) == O_RDONLY && (file->f_flags & O_ACCMODE) != O_RDONLY) {
e27759d7a333d (Erez Zadok 2009-12-03 13:35:27 -0500 228) rc = -EPERM;
332ab16f830f5 (Tyler Hicks 2011-04-14 15:35:11 -0500 229) printk(KERN_WARNING "%s: Lower file is RO; eCryptfs "
e27759d7a333d (Erez Zadok 2009-12-03 13:35:27 -0500 230) "file must hence be opened RO\n", __func__);
332ab16f830f5 (Tyler Hicks 2011-04-14 15:35:11 -0500 231) goto out_put;
e27759d7a333d (Erez Zadok 2009-12-03 13:35:27 -0500 232) }
2ed92554abc5c (Michael Halcrow 2007-10-16 01:28:10 -0700 233) ecryptfs_set_file_lower(
2ed92554abc5c (Michael Halcrow 2007-10-16 01:28:10 -0700 234) file, ecryptfs_inode_to_private(inode)->lower_file);
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 235) rc = read_or_initialize_metadata(ecryptfs_dentry);
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 236) if (rc)
e3ccaa9761200 (Tyler Hicks 2012-06-20 23:50:59 -0700 237) goto out_put;
888d57bbc91eb (Joe Perches 2010-11-10 15:46:16 -0800 238) ecryptfs_printk(KERN_DEBUG, "inode w/ addr = [0x%p], i_ino = "
888d57bbc91eb (Joe Perches 2010-11-10 15:46:16 -0800 239) "[0x%.16lx] size: [0x%.16llx]\n", inode, inode->i_ino,
888d57bbc91eb (Joe Perches 2010-11-10 15:46:16 -0800 240) (unsigned long long)i_size_read(inode));
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 241) goto out;
332ab16f830f5 (Tyler Hicks 2011-04-14 15:35:11 -0500 242) out_put:
332ab16f830f5 (Tyler Hicks 2011-04-14 15:35:11 -0500 243) ecryptfs_put_lower_file(inode);
2ed92554abc5c (Michael Halcrow 2007-10-16 01:28:10 -0700 244) out_free:
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 245) kmem_cache_free(ecryptfs_file_info_cache,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 246) ecryptfs_file_to_private(file));
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 247) out:
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 248) return rc;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 249) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 250)
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 251) /**
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 252) * ecryptfs_dir_open
40f0fd372a623 (Chris J Arges 2016-06-09 15:31:29 -0500 253) * @inode: inode specifying file to open
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 254) * @file: Structure to return filled in
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 255) *
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 256) * Opens the file specified by inode.
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 257) *
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 258) * Returns zero on success; non-zero otherwise
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 259) */
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 260) static int ecryptfs_dir_open(struct inode *inode, struct file *file)
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 261) {
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 262) struct dentry *ecryptfs_dentry = file->f_path.dentry;
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 263) /* Private value of ecryptfs_dentry allocated in
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 264) * ecryptfs_lookup() */
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 265) struct ecryptfs_file_info *file_info;
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 266) struct file *lower_file;
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 267)
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 268) /* Released in ecryptfs_release or end of function if failure */
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 269) file_info = kmem_cache_zalloc(ecryptfs_file_info_cache, GFP_KERNEL);
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 270) ecryptfs_set_file_private(file, file_info);
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 271) if (unlikely(!file_info)) {
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 272) ecryptfs_printk(KERN_ERR,
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 273) "Error attempting to allocate memory\n");
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 274) return -ENOMEM;
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 275) }
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 276) lower_file = dentry_open(ecryptfs_dentry_to_lower_path(ecryptfs_dentry),
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 277) file->f_flags, current_cred());
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 278) if (IS_ERR(lower_file)) {
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 279) printk(KERN_ERR "%s: Error attempting to initialize "
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 280) "the lower file for the dentry with name "
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 281) "[%pd]; rc = [%ld]\n", __func__,
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 282) ecryptfs_dentry, PTR_ERR(lower_file));
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 283) kmem_cache_free(ecryptfs_file_info_cache, file_info);
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 284) return PTR_ERR(lower_file);
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 285) }
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 286) ecryptfs_set_file_lower(file, lower_file);
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 287) return 0;
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 288) }
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 289)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 290) static int ecryptfs_flush(struct file *file, fl_owner_t td)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 291) {
64e6651dcc10e (Tyler Hicks 2012-09-12 18:38:00 -0700 292) struct file *lower_file = ecryptfs_file_to_lower(file);
64e6651dcc10e (Tyler Hicks 2012-09-12 18:38:00 -0700 293)
72c2d53192004 (Al Viro 2013-09-22 16:27:52 -0400 294) if (lower_file->f_op->flush) {
64e6651dcc10e (Tyler Hicks 2012-09-12 18:38:00 -0700 295) filemap_write_and_wait(file->f_mapping);
64e6651dcc10e (Tyler Hicks 2012-09-12 18:38:00 -0700 296) return lower_file->f_op->flush(lower_file, td);
64e6651dcc10e (Tyler Hicks 2012-09-12 18:38:00 -0700 297) }
64e6651dcc10e (Tyler Hicks 2012-09-12 18:38:00 -0700 298)
64e6651dcc10e (Tyler Hicks 2012-09-12 18:38:00 -0700 299) return 0;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 300) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 301)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 302) static int ecryptfs_release(struct inode *inode, struct file *file)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 303) {
332ab16f830f5 (Tyler Hicks 2011-04-14 15:35:11 -0500 304) ecryptfs_put_lower_file(inode);
2ed92554abc5c (Michael Halcrow 2007-10-16 01:28:10 -0700 305) kmem_cache_free(ecryptfs_file_info_cache,
2ed92554abc5c (Michael Halcrow 2007-10-16 01:28:10 -0700 306) ecryptfs_file_to_private(file));
2ed92554abc5c (Michael Halcrow 2007-10-16 01:28:10 -0700 307) return 0;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 308) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 309)
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 310) static int ecryptfs_dir_release(struct inode *inode, struct file *file)
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 311) {
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 312) fput(ecryptfs_file_to_lower(file));
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 313) kmem_cache_free(ecryptfs_file_info_cache,
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 314) ecryptfs_file_to_private(file));
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 315) return 0;
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 316) }
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 317)
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 318) static loff_t ecryptfs_dir_llseek(struct file *file, loff_t offset, int whence)
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 319) {
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 320) return vfs_llseek(ecryptfs_file_to_lower(file), offset, whence);
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 321) }
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 322)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 323) static int
02c24a82187d5 (Josef Bacik 2011-07-16 20:44:56 -0400 324) ecryptfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 325) {
bc5abcf7e411b (Tyler Hicks 2013-06-04 10:24:56 -0700 326) int rc;
bc5abcf7e411b (Tyler Hicks 2013-06-04 10:24:56 -0700 327)
6d4b512413946 (Jeff Layton 2017-08-02 10:14:21 -0400 328) rc = file_write_and_wait(file);
bc5abcf7e411b (Tyler Hicks 2013-06-04 10:24:56 -0700 329) if (rc)
bc5abcf7e411b (Tyler Hicks 2013-06-04 10:24:56 -0700 330) return rc;
bc5abcf7e411b (Tyler Hicks 2013-06-04 10:24:56 -0700 331)
821f7494a7762 (Tyler Hicks 2012-07-03 16:50:57 -0700 332) return vfs_fsync(ecryptfs_file_to_lower(file), datasync);
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 333) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 334)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 335) static int ecryptfs_fasync(int fd, struct file *file, int flag)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 336) {
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 337) int rc = 0;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 338) struct file *lower_file = NULL;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 339)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 340) lower_file = ecryptfs_file_to_lower(file);
72c2d53192004 (Al Viro 2013-09-22 16:27:52 -0400 341) if (lower_file->f_op->fasync)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 342) rc = lower_file->f_op->fasync(fd, lower_file, flag);
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 343) return rc;
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 344) }
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 345)
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 346) static long
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 347) ecryptfs_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 348) {
2000f5beabc9c (Tyler Hicks 2013-11-13 10:09:42 -0800 349) struct file *lower_file = ecryptfs_file_to_lower(file);
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 350) long rc = -ENOTTY;
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 351)
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 352) if (!lower_file->f_op->unlocked_ioctl)
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 353) return rc;
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 354)
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 355) switch (cmd) {
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 356) case FITRIM:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 357) case FS_IOC_GETFLAGS:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 358) case FS_IOC_SETFLAGS:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 359) case FS_IOC_GETVERSION:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 360) case FS_IOC_SETVERSION:
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 361) rc = lower_file->f_op->unlocked_ioctl(lower_file, cmd, arg);
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 362) fsstack_copy_attr_all(file_inode(file), file_inode(lower_file));
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 363)
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 364) return rc;
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 365) default:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 366) return rc;
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 367) }
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 368) }
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 369)
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 370) #ifdef CONFIG_COMPAT
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 371) static long
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 372) ecryptfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 373) {
2000f5beabc9c (Tyler Hicks 2013-11-13 10:09:42 -0800 374) struct file *lower_file = ecryptfs_file_to_lower(file);
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 375) long rc = -ENOIOCTLCMD;
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 376)
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 377) if (!lower_file->f_op->compat_ioctl)
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 378) return rc;
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 379)
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 380) switch (cmd) {
314999dcbca75 (Arnd Bergmann 2019-06-03 13:51:58 +0200 381) case FITRIM:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 382) case FS_IOC32_GETFLAGS:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 383) case FS_IOC32_SETFLAGS:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 384) case FS_IOC32_GETVERSION:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 385) case FS_IOC32_SETVERSION:
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 386) rc = lower_file->f_op->compat_ioctl(lower_file, cmd, arg);
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 387) fsstack_copy_attr_all(file_inode(file), file_inode(lower_file));
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 388)
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 389) return rc;
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 390) default:
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 391) return rc;
6d65261a09ada (Tyler Hicks 2015-02-24 19:28:10 -0600 392) }
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 393) }
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 394) #endif
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 395)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 396) const struct file_operations ecryptfs_dir_fops = {
51a16a9cd5387 (Al Viro 2016-05-04 16:21:20 -0400 397) .iterate_shared = ecryptfs_readdir,
323ef68faf1bb (Andy Whitcroft 2011-02-16 04:49:59 +0000 398) .read = generic_read_dir,
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 399) .unlocked_ioctl = ecryptfs_unlocked_ioctl,
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 400) #ifdef CONFIG_COMPAT
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 401) .compat_ioctl = ecryptfs_compat_ioctl,
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 402) #endif
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 403) .open = ecryptfs_dir_open,
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 404) .release = ecryptfs_dir_release,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 405) .fsync = ecryptfs_fsync,
6a480a7842545 (Al Viro 2016-05-04 14:04:13 -0400 406) .llseek = ecryptfs_dir_llseek,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 407) };
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 408)
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 409) const struct file_operations ecryptfs_main_fops = {
53a2731f9310a (Michael Halcrow 2007-05-23 13:58:15 -0700 410) .llseek = generic_file_llseek,
027978295d455 (Al Viro 2014-04-02 14:40:38 -0400 411) .read_iter = ecryptfs_read_update_atime,
8174202b34c30 (Al Viro 2014-04-03 03:17:43 -0400 412) .write_iter = generic_file_write_iter,
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 413) .unlocked_ioctl = ecryptfs_unlocked_ioctl,
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 414) #ifdef CONFIG_COMPAT
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 415) .compat_ioctl = ecryptfs_compat_ioctl,
c43f7b8fb03be (Tyler Hicks 2009-11-03 11:45:11 -0600 416) #endif
f0fe970df3838 (Jeff Mahoney 2016-07-05 17:32:30 -0400 417) .mmap = ecryptfs_mmap,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 418) .open = ecryptfs_open,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 419) .flush = ecryptfs_flush,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 420) .release = ecryptfs_release,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 421) .fsync = ecryptfs_fsync,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 422) .fasync = ecryptfs_fasync,
e9f6a99cb844a (Michael Halcrow 2007-10-16 01:28:04 -0700 423) .splice_read = generic_file_splice_read,
237fead619984 (Michael Halcrow 2006-10-04 02:16:22 -0700 424) };
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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