/* on-disk additional length */
__u16 i_extra_isize;
+ char i_crypt_policy_flags;
/* Indicate the inline data space. */
u16 i_inline_off;
/* Metadata checksum algorithm codes */
#define EXT4_CRC32C_CHKSUM 1
- /* Encryption algorithms */
- #define EXT4_ENCRYPTION_MODE_INVALID 0
- #define EXT4_ENCRYPTION_MODE_AES_256_XTS 1
- #define EXT4_ENCRYPTION_MODE_AES_256_GCM 2
- #define EXT4_ENCRYPTION_MODE_AES_256_CBC 3
-
/*
* Structure of the super block
*/
int ext4_fname_crypto_alloc_buffer(struct ext4_fname_crypto_ctx *ctx,
u32 ilen, struct ext4_str *crypto_str);
int _ext4_fname_disk_to_usr(struct ext4_fname_crypto_ctx *ctx,
+ struct dx_hash_info *hinfo,
const struct ext4_str *iname,
struct ext4_str *oname);
int ext4_fname_disk_to_usr(struct ext4_fname_crypto_ctx *ctx,
+ struct dx_hash_info *hinfo,
const struct ext4_dir_entry_2 *de,
struct ext4_str *oname);
int ext4_fname_usr_to_disk(struct ext4_fname_crypto_ctx *ctx,
int ext4_fname_usr_to_hash(struct ext4_fname_crypto_ctx *ctx,
const struct qstr *iname,
struct dx_hash_info *hinfo);
- int ext4_fname_disk_to_hash(struct ext4_fname_crypto_ctx *ctx,
- const struct ext4_dir_entry_2 *de,
- struct dx_hash_info *hinfo);
int ext4_fname_crypto_namelen_on_disk(struct ext4_fname_crypto_ctx *ctx,
u32 namelen);
+ int ext4_fname_match(struct ext4_fname_crypto_ctx *ctx, struct ext4_str *cstr,
+ int len, const char * const name,
+ struct ext4_dir_entry_2 *de);
+
#ifdef CONFIG_EXT4_FS_ENCRYPTION
void ext4_put_fname_crypto_ctx(struct ext4_fname_crypto_ctx **ctx);
/* indirect.c */
extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_map_blocks *map, int flags);
-extern ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
- struct iov_iter *iter, loff_t offset);
+extern ssize_t ext4_ind_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
+ loff_t offset);
extern int ext4_ind_calc_metadata_amount(struct inode *inode, sector_t lblock);
extern int ext4_ind_trans_blocks(struct inode *inode, int nrblocks);
extern void ext4_ind_truncate(handle_t *, struct inode *inode);
/* file.c */
extern const struct inode_operations ext4_file_inode_operations;
extern const struct file_operations ext4_file_operations;
-extern const struct file_operations ext4_dax_file_operations;
extern loff_t ext4_llseek(struct file *file, loff_t offset, int origin);
/* inline.c */
#include <linux/kernel.h>
#include <linux/printk.h>
#include <linux/slab.h>
-#include <linux/aio.h>
#include <linux/bitops.h>
#include "ext4_jbd2.h"
status = map->m_flags & EXT4_MAP_UNWRITTEN ?
EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN;
if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) &&
+ !(status & EXTENT_STATUS_WRITTEN) &&
ext4_find_delalloc_range(inode, map->m_lblk,
map->m_lblk + map->m_len - 1))
status |= EXTENT_STATUS_DELAYED;
status = map->m_flags & EXT4_MAP_UNWRITTEN ?
EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN;
if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) &&
+ !(status & EXTENT_STATUS_WRITTEN) &&
ext4_find_delalloc_range(inode, map->m_lblk,
map->m_lblk + map->m_len - 1))
status |= EXTENT_STATUS_DELAYED;
* if the machine crashes during the write.
*
*/
-static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
- struct iov_iter *iter, loff_t offset)
+static ssize_t ext4_ext_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
+ loff_t offset)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
ext4_io_end_t *io_end = NULL;
/* Use the old path for reads and writes beyond i_size. */
- if (rw != WRITE || final_size > inode->i_size)
- return ext4_ind_direct_IO(rw, iocb, iter, offset);
+ if (iov_iter_rw(iter) != WRITE || final_size > inode->i_size)
+ return ext4_ind_direct_IO(iocb, iter, offset);
BUG_ON(iocb->private == NULL);
* conversion. This also disallows race between truncate() and
* overwrite DIO as i_dio_count needs to be incremented under i_mutex.
*/
- if (rw == WRITE)
- atomic_inc(&inode->i_dio_count);
+ if (iov_iter_rw(iter) == WRITE)
+ inode_dio_begin(inode);
/* If we do a overwrite dio, i_mutex locking can be released */
overwrite = *((int *)iocb->private);
BUG_ON(ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode));
#endif
if (IS_DAX(inode))
- ret = dax_do_io(rw, iocb, inode, iter, offset, get_block_func,
+ ret = dax_do_io(iocb, inode, iter, offset, get_block_func,
ext4_end_io_dio, dio_flags);
else
- ret = __blockdev_direct_IO(rw, iocb, inode,
+ ret = __blockdev_direct_IO(iocb, inode,
inode->i_sb->s_bdev, iter, offset,
get_block_func,
ext4_end_io_dio, NULL, dio_flags);
}
retake_lock:
- if (rw == WRITE)
- inode_dio_done(inode);
+ if (iov_iter_rw(iter) == WRITE)
+ inode_dio_end(inode);
/* take i_mutex locking again if we do a ovewrite dio */
if (overwrite) {
up_read(&EXT4_I(inode)->i_data_sem);
return ret;
}
-static ssize_t ext4_direct_IO(int rw, struct kiocb *iocb,
- struct iov_iter *iter, loff_t offset)
+static ssize_t ext4_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
+ loff_t offset)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
if (ext4_has_inline_data(inode))
return 0;
- trace_ext4_direct_IO_enter(inode, offset, count, rw);
+ trace_ext4_direct_IO_enter(inode, offset, count, iov_iter_rw(iter));
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
- ret = ext4_ext_direct_IO(rw, iocb, iter, offset);
+ ret = ext4_ext_direct_IO(iocb, iter, offset);
else
- ret = ext4_ind_direct_IO(rw, iocb, iter, offset);
- trace_ext4_direct_IO_exit(inode, offset, count, rw, ret);
+ ret = ext4_ind_direct_IO(iocb, iter, offset);
+ trace_ext4_direct_IO_exit(inode, offset, count, iov_iter_rw(iter), ret);
return ret;
}
if (S_ISREG(inode->i_mode)) {
inode->i_op = &ext4_file_inode_operations;
- if (test_opt(inode->i_sb, DAX))
- inode->i_fop = &ext4_dax_file_operations;
- else
- inode->i_fop = &ext4_file_operations;
+ inode->i_fop = &ext4_file_operations;
ext4_set_aops(inode);
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &ext4_dir_inode_operations;
*/
int ext4_setattr(struct dentry *dentry, struct iattr *attr)
{
- struct inode *inode = dentry->d_inode;
+ struct inode *inode = d_inode(dentry);
int error, rc = 0;
int orphan = 0;
const unsigned int ia_valid = attr->ia_valid;
struct inode *inode;
unsigned long long delalloc_blocks;
- inode = dentry->d_inode;
+ inode = d_inode(dentry);
generic_fillattr(inode, stat);
/*
ext4_put_fname_crypto_ctx(&ctx);
ctx = NULL;
}
- res = ext4_fname_disk_to_usr(ctx, de,
+ res = ext4_fname_disk_to_usr(ctx, NULL, de,
&fname_crypto_str);
if (res < 0) {
printk(KERN_WARNING "Error "
name = fname_crypto_str.name;
len = fname_crypto_str.len;
}
- res = ext4_fname_disk_to_hash(ctx, de,
- &h);
- if (res < 0) {
- printk(KERN_WARNING "Error "
- "converting filename "
- "from disk to htree"
- "\n");
- h.hash = 0xDEADBEEF;
- }
+ ext4fs_dirhash(de->name, de->name_len,
+ &h);
printk("%*.s:(E)%x.%u ", len, name,
h.hash, (unsigned) ((char *) de
- base));
/* silently ignore the rest of the block */
break;
}
- #ifdef CONFIG_EXT4_FS_ENCRYPTION
- err = ext4_fname_disk_to_hash(ctx, de, hinfo);
- if (err < 0) {
- count = err;
- goto errout;
- }
- #else
ext4fs_dirhash(de->name, de->name_len, hinfo);
- #endif
if ((hinfo->hash < start_hash) ||
((hinfo->hash == start_hash) &&
(hinfo->minor_hash < start_minor_hash)))
&tmp_str);
} else {
/* Directory is encrypted */
- err = ext4_fname_disk_to_usr(ctx, de,
+ err = ext4_fname_disk_to_usr(ctx, hinfo, de,
&fname_crypto_str);
if (err < 0) {
count = err;
int count = 0;
char *base = (char *) de;
struct dx_hash_info h = *hinfo;
- #ifdef CONFIG_EXT4_FS_ENCRYPTION
- struct ext4_fname_crypto_ctx *ctx = NULL;
- int err;
-
- ctx = ext4_get_fname_crypto_ctx(dir, EXT4_NAME_LEN);
- if (IS_ERR(ctx))
- return PTR_ERR(ctx);
- #endif
while ((char *) de < base + blocksize) {
if (de->name_len && de->inode) {
- #ifdef CONFIG_EXT4_FS_ENCRYPTION
- err = ext4_fname_disk_to_hash(ctx, de, &h);
- if (err < 0) {
- ext4_put_fname_crypto_ctx(&ctx);
- return err;
- }
- #else
ext4fs_dirhash(de->name, de->name_len, &h);
- #endif
map_tail--;
map_tail->hash = h.hash;
map_tail->offs = ((char *) de - base)>>2;
/* XXX: do we need to check rec_len == 0 case? -Chris */
de = ext4_next_entry(de, blocksize);
}
- #ifdef CONFIG_EXT4_FS_ENCRYPTION
- ext4_put_fname_crypto_ctx(&ctx);
- #endif
return count;
}
return 0;
#ifdef CONFIG_EXT4_FS_ENCRYPTION
- if (ctx) {
- /* Directory is encrypted */
- res = ext4_fname_disk_to_usr(ctx, de, fname_crypto_str);
- if (res < 0)
- return res;
- if (len != res)
- return 0;
- res = memcmp(name, fname_crypto_str->name, len);
- return (res == 0) ? 1 : 0;
- }
+ if (ctx)
+ return ext4_fname_match(ctx, fname_crypto_str, len, name, de);
#endif
if (len != de->name_len)
return 0;
if (IS_ERR(ctx))
return -1;
- if (ctx != NULL) {
- /* Allocate buffer to hold maximum name length */
- res = ext4_fname_crypto_alloc_buffer(ctx, EXT4_NAME_LEN,
- &fname_crypto_str);
- if (res < 0) {
- ext4_put_fname_crypto_ctx(&ctx);
- return -1;
- }
- }
-
de = (struct ext4_dir_entry_2 *)search_buf;
dlimit = search_buf + buf_size;
while ((char *) de < dlimit) {
struct ext4_dir_entry_2 * de;
struct buffer_head *bh;
- bh = ext4_find_entry(child->d_inode, &dotdot, &de, NULL);
+ bh = ext4_find_entry(d_inode(child), &dotdot, &de, NULL);
if (IS_ERR(bh))
return (struct dentry *) bh;
if (!bh)
ino = le32_to_cpu(de->inode);
brelse(bh);
- if (!ext4_valid_inum(child->d_inode->i_sb, ino)) {
- EXT4_ERROR_INODE(child->d_inode,
+ if (!ext4_valid_inum(d_inode(child)->i_sb, ino)) {
+ EXT4_ERROR_INODE(d_inode(child),
"bad parent inode number: %u", ino);
return ERR_PTR(-EIO);
}
- return d_obtain_alias(ext4_iget_normal(child->d_inode->i_sb, ino));
+ return d_obtain_alias(ext4_iget_normal(d_inode(child)->i_sb, ino));
}
/*
return res;
}
reclen = EXT4_DIR_REC_LEN(res);
-
- /* Allocate buffer to hold maximum name length */
- res = ext4_fname_crypto_alloc_buffer(ctx, EXT4_NAME_LEN,
- &fname_crypto_str);
- if (res < 0) {
- ext4_put_fname_crypto_ctx(&ctx);
- return -1;
- }
}
de = (struct ext4_dir_entry_2 *)buf;
struct inode *inode, struct ext4_dir_entry_2 *de,
struct buffer_head *bh)
{
- struct inode *dir = dentry->d_parent->d_inode;
+ struct inode *dir = d_inode(dentry->d_parent);
const char *name = dentry->d_name.name;
int namelen = dentry->d_name.len;
unsigned int blocksize = dir->i_sb->s_blocksize;
static int make_indexed_dir(handle_t *handle, struct dentry *dentry,
struct inode *inode, struct buffer_head *bh)
{
- struct inode *dir = dentry->d_parent->d_inode;
+ struct inode *dir = d_inode(dentry->d_parent);
#ifdef CONFIG_EXT4_FS_ENCRYPTION
struct ext4_fname_crypto_ctx *ctx = NULL;
int res;
static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
struct inode *inode)
{
- struct inode *dir = dentry->d_parent->d_inode;
+ struct inode *dir = d_inode(dentry->d_parent);
struct buffer_head *bh = NULL;
struct ext4_dir_entry_2 *de;
struct ext4_dir_entry_tail *t;
struct dx_entry *entries, *at;
struct dx_hash_info hinfo;
struct buffer_head *bh;
- struct inode *dir = dentry->d_parent->d_inode;
+ struct inode *dir = d_inode(dentry->d_parent);
struct super_block *sb = dir->i_sb;
struct ext4_dir_entry_2 *de;
int err;
err = PTR_ERR(inode);
if (!IS_ERR(inode)) {
inode->i_op = &ext4_file_inode_operations;
- if (test_opt(inode->i_sb, DAX))
- inode->i_fop = &ext4_dax_file_operations;
- else
- inode->i_fop = &ext4_file_operations;
+ inode->i_fop = &ext4_file_operations;
ext4_set_aops(inode);
err = 0;
#ifdef CONFIG_EXT4_FS_ENCRYPTION
err = PTR_ERR(inode);
if (!IS_ERR(inode)) {
inode->i_op = &ext4_file_inode_operations;
- if (test_opt(inode->i_sb, DAX))
- inode->i_fop = &ext4_dax_file_operations;
- else
- inode->i_fop = &ext4_file_operations;
+ inode->i_fop = &ext4_file_operations;
ext4_set_aops(inode);
d_tmpfile(dentry, inode);
err = ext4_orphan_add(handle, inode);
/* Initialize quotas before so that eventual writes go in
* separate transaction */
dquot_initialize(dir);
- dquot_initialize(dentry->d_inode);
+ dquot_initialize(d_inode(dentry));
retval = -ENOENT;
bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);
if (!bh)
goto end_rmdir;
- inode = dentry->d_inode;
+ inode = d_inode(dentry);
retval = -EIO;
if (le32_to_cpu(de->inode) != inode->i_ino)
/* Initialize quotas before so that eventual writes go
* in separate transaction */
dquot_initialize(dir);
- dquot_initialize(dentry->d_inode);
+ dquot_initialize(d_inode(dentry));
retval = -ENOENT;
bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);
if (!bh)
goto end_unlink;
- inode = dentry->d_inode;
+ inode = d_inode(dentry);
retval = -EIO;
if (le32_to_cpu(de->inode) != inode->i_ino)
struct inode *dir, struct dentry *dentry)
{
handle_t *handle;
- struct inode *inode = old_dentry->d_inode;
+ struct inode *inode = d_inode(old_dentry);
int err, retries = 0;
if (inode->i_nlink >= EXT4_LINK_MAX)
struct ext4_renament old = {
.dir = old_dir,
.dentry = old_dentry,
- .inode = old_dentry->d_inode,
+ .inode = d_inode(old_dentry),
};
struct ext4_renament new = {
.dir = new_dir,
.dentry = new_dentry,
- .inode = new_dentry->d_inode,
+ .inode = d_inode(new_dentry),
};
int force_reread;
int retval;
struct ext4_renament old = {
.dir = old_dir,
.dentry = old_dentry,
- .inode = old_dentry->d_inode,
+ .inode = d_inode(old_dentry),
};
struct ext4_renament new = {
.dir = new_dir,
.dentry = new_dentry,
- .inode = new_dentry->d_inode,
+ .inode = d_inode(new_dentry),
};
u8 new_file_type;
int retval;
struct page *cpage = NULL;
char *caddr, *paddr = NULL;
struct ext4_str cstr, pstr;
- struct inode *inode = dentry->d_inode;
+ struct inode *inode = d_inode(dentry);
struct ext4_fname_crypto_ctx *ctx = NULL;
struct ext4_encrypted_symlink_data *sd;
loff_t size = min_t(loff_t, i_size_read(inode), PAGE_SIZE - 1);
return ctx;
if (ext4_inode_is_fast_symlink(inode)) {
- caddr = (char *) EXT4_I(dentry->d_inode)->i_data;
- max_size = sizeof(EXT4_I(dentry->d_inode)->i_data);
+ caddr = (char *) EXT4_I(inode)->i_data;
+ max_size = sizeof(EXT4_I(inode)->i_data);
} else {
cpage = read_mapping_page(inode->i_mapping, 0, NULL);
if (IS_ERR(cpage)) {
goto errout;
}
pstr.name = paddr;
- res = _ext4_fname_disk_to_usr(ctx, &cstr, &pstr);
+ res = _ext4_fname_disk_to_usr(ctx, NULL, &cstr, &pstr);
if (res < 0)
goto errout;
/* Null-terminate the name */
static void *ext4_follow_fast_link(struct dentry *dentry, struct nameidata *nd)
{
- struct ext4_inode_info *ei = EXT4_I(dentry->d_inode);
+ struct ext4_inode_info *ei = EXT4_I(d_inode(dentry));
nd_set_link(nd, (char *) ei->i_data);
return NULL;
}
projects / linux-2.6-block.git / commitdiff