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Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c64
1 files changed, 41 insertions, 23 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index e061e66c8280..f06d0589ddba 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -21,7 +21,6 @@
#include <linux/fs.h>
#include <linux/time.h>
#include <linux/vmalloc.h>
-#include <linux/jbd2.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/blkdev.h>
@@ -323,22 +322,6 @@ static void save_error_info(struct super_block *sb, const char *func,
ext4_commit_super(sb, 1);
}
-/*
- * The del_gendisk() function uninitializes the disk-specific data
- * structures, including the bdi structure, without telling anyone
- * else. Once this happens, any attempt to call mark_buffer_dirty()
- * (for example, by ext4_commit_super), will cause a kernel OOPS.
- * This is a kludge to prevent these oops until we can put in a proper
- * hook in del_gendisk() to inform the VFS and file system layers.
- */
-static int block_device_ejected(struct super_block *sb)
-{
- struct inode *bd_inode = sb->s_bdev->bd_inode;
- struct backing_dev_info *bdi = inode_to_bdi(bd_inode);
-
- return bdi->dev == NULL;
-}
-
static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn)
{
struct super_block *sb = journal->j_private;
@@ -893,6 +876,9 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
atomic_set(&ei->i_ioend_count, 0);
atomic_set(&ei->i_unwritten, 0);
INIT_WORK(&ei->i_rsv_conversion_work, ext4_end_io_rsv_work);
+#ifdef CONFIG_EXT4_FS_ENCRYPTION
+ ei->i_encryption_key.mode = EXT4_ENCRYPTION_MODE_INVALID;
+#endif
return &ei->vfs_inode;
}
@@ -1076,7 +1062,7 @@ static const struct quotactl_ops ext4_qctl_operations = {
.quota_on = ext4_quota_on,
.quota_off = ext4_quota_off,
.quota_sync = dquot_quota_sync,
- .get_info = dquot_get_dqinfo,
+ .get_state = dquot_get_state,
.set_info = dquot_set_dqinfo,
.get_dqblk = dquot_get_dqblk,
.set_dqblk = dquot_set_dqblk
@@ -1120,7 +1106,7 @@ enum {
Opt_commit, Opt_min_batch_time, Opt_max_batch_time, Opt_journal_dev,
Opt_journal_path, Opt_journal_checksum, Opt_journal_async_commit,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
- Opt_data_err_abort, Opt_data_err_ignore,
+ Opt_data_err_abort, Opt_data_err_ignore, Opt_test_dummy_encryption,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
@@ -1211,6 +1197,7 @@ static const match_table_t tokens = {
{Opt_init_itable, "init_itable"},
{Opt_noinit_itable, "noinit_itable"},
{Opt_max_dir_size_kb, "max_dir_size_kb=%u"},
+ {Opt_test_dummy_encryption, "test_dummy_encryption"},
{Opt_removed, "check=none"}, /* mount option from ext2/3 */
{Opt_removed, "nocheck"}, /* mount option from ext2/3 */
{Opt_removed, "reservation"}, /* mount option from ext2/3 */
@@ -1412,6 +1399,7 @@ static const struct mount_opts {
{Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT},
{Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT},
{Opt_max_dir_size_kb, 0, MOPT_GTE0},
+ {Opt_test_dummy_encryption, 0, MOPT_GTE0},
{Opt_err, 0, 0}
};
@@ -1568,7 +1556,7 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
return -1;
}
- journal_inode = path.dentry->d_inode;
+ journal_inode = d_inode(path.dentry);
if (!S_ISBLK(journal_inode->i_mode)) {
ext4_msg(sb, KERN_ERR, "error: journal path %s "
"is not a block device", journal_path);
@@ -1588,6 +1576,15 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
}
*journal_ioprio =
IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, arg);
+ } else if (token == Opt_test_dummy_encryption) {
+#ifdef CONFIG_EXT4_FS_ENCRYPTION
+ sbi->s_mount_flags |= EXT4_MF_TEST_DUMMY_ENCRYPTION;
+ ext4_msg(sb, KERN_WARNING,
+ "Test dummy encryption mode enabled");
+#else
+ ext4_msg(sb, KERN_WARNING,
+ "Test dummy encryption mount option ignored");
+#endif
} else if (m->flags & MOPT_DATAJ) {
if (is_remount) {
if (!sbi->s_journal)
@@ -2685,11 +2682,13 @@ static struct attribute *ext4_attrs[] = {
EXT4_INFO_ATTR(lazy_itable_init);
EXT4_INFO_ATTR(batched_discard);
EXT4_INFO_ATTR(meta_bg_resize);
+EXT4_INFO_ATTR(encryption);
static struct attribute *ext4_feat_attrs[] = {
ATTR_LIST(lazy_itable_init),
ATTR_LIST(batched_discard),
ATTR_LIST(meta_bg_resize),
+ ATTR_LIST(encryption),
NULL,
};
@@ -3448,6 +3447,11 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (sb->s_bdev->bd_part)
sbi->s_sectors_written_start =
part_stat_read(sb->s_bdev->bd_part, sectors[1]);
+#ifdef CONFIG_EXT4_FS_ENCRYPTION
+ /* Modes of operations for file and directory encryption. */
+ sbi->s_file_encryption_mode = EXT4_ENCRYPTION_MODE_AES_256_XTS;
+ sbi->s_dir_encryption_mode = EXT4_ENCRYPTION_MODE_INVALID;
+#endif
/* Cleanup superblock name */
for (cp = sb->s_id; (cp = strchr(cp, '/'));)
@@ -3692,6 +3696,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
}
}
+ if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_ENCRYPT) &&
+ es->s_encryption_level) {
+ ext4_msg(sb, KERN_ERR, "Unsupported encryption level %d",
+ es->s_encryption_level);
+ goto failed_mount;
+ }
+
if (sb->s_blocksize != blocksize) {
/* Validate the filesystem blocksize */
if (!sb_set_blocksize(sb, blocksize)) {
@@ -4054,6 +4065,13 @@ no_journal:
}
}
+ if (unlikely(sbi->s_mount_flags & EXT4_MF_TEST_DUMMY_ENCRYPTION) &&
+ !(sb->s_flags & MS_RDONLY) &&
+ !EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
+ EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_ENCRYPT);
+ ext4_commit_super(sb, 1);
+ }
+
/*
* Get the # of file system overhead blocks from the
* superblock if present.
@@ -4570,7 +4588,7 @@ static int ext4_commit_super(struct super_block *sb, int sync)
struct buffer_head *sbh = EXT4_SB(sb)->s_sbh;
int error = 0;
- if (!sbh || block_device_ejected(sb))
+ if (!sbh)
return error;
if (buffer_write_io_error(sbh)) {
/*
@@ -5199,7 +5217,7 @@ static int ext4_write_info(struct super_block *sb, int type)
handle_t *handle;
/* Data block + inode block */
- handle = ext4_journal_start(sb->s_root->d_inode, EXT4_HT_QUOTA, 2);
+ handle = ext4_journal_start(d_inode(sb->s_root), EXT4_HT_QUOTA, 2);
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_commit_info(sb, type);
@@ -5247,7 +5265,7 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
* all updates to the file when we bypass pagecache...
*/
if (EXT4_SB(sb)->s_journal &&
- ext4_should_journal_data(path->dentry->d_inode)) {
+ ext4_should_journal_data(d_inode(path->dentry))) {
/*
* We don't need to lock updates but journal_flush() could
* otherwise be livelocked...
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-23 04:32:37 +0300