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Message-Id: <1477054121-10198-20-git-send-email-richard@nod.at>
Date: Fri, 21 Oct 2016 14:48:34 +0200
From: Richard Weinberger <richard@....at>
To: linux-mtd@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
dedekind1@...il.com, adrian.hunter@...el.com, tytso@....edu,
jaegeuk@...nel.org, david@...ma-star.at, wd@...x.de,
sbabic@...x.de, dengler@...utronix.de,
Richard Weinberger <richard@....at>
Subject: [PATCH 19/26] ubifs: Implement encrypted filenames
Signed-off-by: Richard Weinberger <richard@....at>
---
fs/ubifs/debug.c | 14 +--
fs/ubifs/dir.c | 284 +++++++++++++++++++++++++++++++++++++++++++----------
fs/ubifs/journal.c | 76 +++++++-------
fs/ubifs/key.h | 19 ++--
fs/ubifs/replay.c | 8 +-
fs/ubifs/tnc.c | 54 +++++-----
fs/ubifs/ubifs.h | 19 ++--
fs/ubifs/xattr.c | 42 ++++----
8 files changed, 350 insertions(+), 166 deletions(-)
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 69e287e20732..1e712a364680 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -233,7 +233,7 @@ static void dump_ch(const struct ubifs_ch *ch)
void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode)
{
const struct ubifs_inode *ui = ubifs_inode(inode);
- struct qstr nm = { .name = NULL };
+ struct fscrypt_name nm = {0};
union ubifs_key key;
struct ubifs_dent_node *dent, *pdent = NULL;
int count = 2;
@@ -289,8 +289,8 @@ void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode)
pr_err("\t%d: %s (%s)\n",
count++, dent->name, get_dent_type(dent->type));
- nm.name = dent->name;
- nm.len = le16_to_cpu(dent->nlen);
+ fname_name(&nm) = dent->name;
+ fname_len(&nm) = le16_to_cpu(dent->nlen);
kfree(pdent);
pdent = dent;
key_read(c, &dent->key, &key);
@@ -1107,7 +1107,7 @@ int dbg_check_dir(struct ubifs_info *c, const struct inode *dir)
unsigned int nlink = 2;
union ubifs_key key;
struct ubifs_dent_node *dent, *pdent = NULL;
- struct qstr nm = { .name = NULL };
+ struct fscrypt_name nm = {0};
loff_t size = UBIFS_INO_NODE_SZ;
if (!dbg_is_chk_gen(c))
@@ -1128,9 +1128,9 @@ int dbg_check_dir(struct ubifs_info *c, const struct inode *dir)
return err;
}
- nm.name = dent->name;
- nm.len = le16_to_cpu(dent->nlen);
- size += CALC_DENT_SIZE(nm.len);
+ fname_name(&nm) = dent->name;
+ fname_len(&nm) = le16_to_cpu(dent->nlen);
+ size += CALC_DENT_SIZE(fname_len(&nm));
if (dent->type == UBIFS_ITYPE_DIR)
nlink += 1;
kfree(pdent);
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 7ee32768ba19..723bae4dec30 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -196,13 +196,13 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
static int dbg_check_name(const struct ubifs_info *c,
const struct ubifs_dent_node *dent,
- const struct qstr *nm)
+ const struct fscrypt_name *nm)
{
if (!dbg_is_chk_gen(c))
return 0;
- if (le16_to_cpu(dent->nlen) != nm->len)
+ if (le16_to_cpu(dent->nlen) != fname_len(nm))
return -EINVAL;
- if (memcmp(dent->name, nm->name, nm->len))
+ if (memcmp(dent->name, fname_name(nm), fname_len(nm)))
return -EINVAL;
return 0;
}
@@ -215,6 +215,7 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
struct inode *inode = NULL;
struct ubifs_dent_node *dent;
struct ubifs_info *c = dir->i_sb->s_fs_info;
+ struct fscrypt_name nm;
dbg_gen("'%pd' in dir ino %lu", dentry, dir->i_ino);
@@ -233,27 +234,42 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
return ERR_PTR(err);
}
- if (dentry->d_name.len > UBIFS_MAX_NLEN)
- return ERR_PTR(-ENAMETOOLONG);
+ err = fscrypt_setup_filename(dir, &dentry->d_name, 1, &nm);
+ if (err)
+ return ERR_PTR(err);
+
+ if (fname_len(&nm) > UBIFS_MAX_NLEN) {
+ err = -ENAMETOOLONG;
+ goto out_fname;
+ }
dent = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
- if (!dent)
- return ERR_PTR(-ENOMEM);
+ if (!dent) {
+ err = -ENOMEM;
+ goto out_fname;
+ }
- dent_key_init(c, &key, dir->i_ino, &dentry->d_name);
+ if (nm.hash) {
+ ubifs_assert(fname_len(&nm) == 0);
+ ubifs_assert(fname_name(&nm) == NULL);
+ dent_key_init_hash(c, &key, dir->i_ino, nm.hash);
+ err = ubifs_tnc_lookup(c, &key, dent);
+ } else {
+ dent_key_init(c, &key, dir->i_ino, &nm);
+ err = ubifs_tnc_lookup_nm(c, &key, dent, &nm);
+ }
- err = ubifs_tnc_lookup_nm(c, &key, dent, &dentry->d_name);
if (err) {
if (err == -ENOENT) {
dbg_gen("not found");
goto done;
}
- goto out;
+ goto out_dent;
}
- if (dbg_check_name(c, dent, &dentry->d_name)) {
+ if (dbg_check_name(c, dent, &nm)) {
err = -EINVAL;
- goto out;
+ goto out_dent;
}
inode = ubifs_iget(dir->i_sb, le64_to_cpu(dent->inum));
@@ -266,11 +282,12 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
ubifs_err(c, "dead directory entry '%pd', error %d",
dentry, err);
ubifs_ro_mode(c, err);
- goto out;
+ goto out_dent;
}
done:
kfree(dent);
+ fscrypt_free_filename(&nm);
/*
* Note, d_splice_alias() would be required instead if we supported
* NFS.
@@ -278,8 +295,10 @@ done:
d_add(dentry, inode);
return NULL;
-out:
+out_dent:
kfree(dent);
+out_fname:
+ fscrypt_free_filename(&nm);
return ERR_PTR(err);
}
@@ -288,10 +307,11 @@ static int ubifs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
{
struct inode *inode;
struct ubifs_info *c = dir->i_sb->s_fs_info;
- int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
.dirtied_ino = 1 };
struct ubifs_inode *dir_ui = ubifs_inode(dir);
+ struct fscrypt_name nm;
+ int err, sz_change;
/*
* Budget request settings: new inode, new direntry, changing the
@@ -305,10 +325,16 @@ static int ubifs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
if (err)
return err;
+ err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
+ if (err)
+ goto out_budg;
+
+ sz_change = CALC_DENT_SIZE(fname_len(&nm));
+
inode = ubifs_new_inode(c, dir, mode);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
- goto out_budg;
+ goto out_fname;
}
err = ubifs_init_security(dir, inode, &dentry->d_name);
@@ -319,12 +345,13 @@ static int ubifs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
dir->i_size += sz_change;
dir_ui->ui_size = dir->i_size;
dir->i_mtime = dir->i_ctime = inode->i_ctime;
- err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0, 0);
+ err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);
if (err)
goto out_cancel;
mutex_unlock(&dir_ui->ui_mutex);
ubifs_release_budget(c, &req);
+ fscrypt_free_filename(&nm);
insert_inode_hash(inode);
d_instantiate(dentry, inode);
return 0;
@@ -336,6 +363,8 @@ out_cancel:
out_inode:
make_bad_inode(inode);
iput(inode);
+out_fname:
+ fscrypt_free_filename(&nm);
out_budg:
ubifs_release_budget(c, &req);
ubifs_err(c, "cannot create regular file, error %d", err);
@@ -391,21 +420,36 @@ static unsigned int vfs_dent_type(uint8_t type)
*/
static int ubifs_readdir(struct file *file, struct dir_context *ctx)
{
- int err;
- struct qstr nm;
+ int err, fstr_real_len;
+ struct fscrypt_name nm;
+ struct fscrypt_str fstr = {0};
union ubifs_key key;
struct ubifs_dent_node *dent;
struct inode *dir = file_inode(file);
struct ubifs_info *c = dir->i_sb->s_fs_info;
+ bool encrypted = ubifs_crypt_is_encrypted(dir);
dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, ctx->pos);
- if (ctx->pos > UBIFS_S_KEY_HASH_MASK || ctx->pos == 2)
+ if (ctx->pos > UBIFS_S_KEY_HASH_MASK || ctx->pos == 2) {
/*
* The directory was seek'ed to a senseless position or there
* are no more entries.
*/
return 0;
+ }
+
+ if (encrypted) {
+ err = fscrypt_get_encryption_info(dir);
+ if (err && err != -ENOKEY)
+ return err;
+
+ err = fscrypt_fname_alloc_buffer(dir, UBIFS_MAX_NLEN, &fstr);
+ if (err)
+ return err;
+
+ fstr_real_len = fstr.len;
+ }
if (file->f_version == 0) {
/*
@@ -428,12 +472,15 @@ static int ubifs_readdir(struct file *file, struct dir_context *ctx)
/* File positions 0 and 1 correspond to "." and ".." */
if (ctx->pos < 2) {
ubifs_assert(!file->private_data);
- if (!dir_emit_dots(file, ctx))
+ if (!dir_emit_dots(file, ctx)) {
+ if (encrypted)
+ fscrypt_fname_free_buffer(&fstr);
return 0;
+ }
/* Find the first entry in TNC and save it */
lowest_dent_key(c, &key, dir->i_ino);
- nm.name = NULL;
+ fname_len(&nm) = 0;
dent = ubifs_tnc_next_ent(c, &key, &nm);
if (IS_ERR(dent)) {
err = PTR_ERR(dent);
@@ -451,7 +498,7 @@ static int ubifs_readdir(struct file *file, struct dir_context *ctx)
* Find the entry corresponding to @ctx->pos or the closest one.
*/
dent_key_init_hash(c, &key, dir->i_ino, ctx->pos);
- nm.name = NULL;
+ fname_len(&nm) = 0;
dent = ubifs_tnc_next_ent(c, &key, &nm);
if (IS_ERR(dent)) {
err = PTR_ERR(dent);
@@ -468,15 +515,30 @@ static int ubifs_readdir(struct file *file, struct dir_context *ctx)
ubifs_assert(le64_to_cpu(dent->ch.sqnum) >
ubifs_inode(dir)->creat_sqnum);
- nm.len = le16_to_cpu(dent->nlen);
- if (!dir_emit(ctx, dent->name, nm.len,
+ fname_len(&nm) = le16_to_cpu(dent->nlen);
+ fname_name(&nm) = dent->name;
+
+ if (encrypted) {
+ fstr.len = fstr_real_len;
+
+ err = fscrypt_fname_disk_to_usr(dir, key_hash_flash(c, &dent->key), 0, &nm.disk_name, &fstr);
+ if (err < 0)
+ goto out;
+ } else {
+ fstr.len = fname_len(&nm);
+ fstr.name = fname_name(&nm);
+ }
+
+ if (!dir_emit(ctx, fstr.name, fstr.len,
le64_to_cpu(dent->inum),
- vfs_dent_type(dent->type)))
+ vfs_dent_type(dent->type))) {
+ if (encrypted)
+ fscrypt_fname_free_buffer(&fstr);
return 0;
+ }
/* Switch to the next entry */
key_read(c, &dent->key, &key);
- nm.name = dent->name;
dent = ubifs_tnc_next_ent(c, &key, &nm);
if (IS_ERR(dent)) {
err = PTR_ERR(dent);
@@ -493,6 +555,9 @@ out:
kfree(file->private_data);
file->private_data = NULL;
+ if (encrypted)
+ fscrypt_fname_free_buffer(&fstr);
+
if (err != -ENOENT) {
ubifs_err(c, "cannot find next direntry, error %d", err);
return err;
@@ -547,6 +612,7 @@ static int ubifs_link(struct dentry *old_dentry, struct inode *dir,
int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
struct ubifs_budget_req req = { .new_dent = 1, .dirtied_ino = 2,
.dirtied_ino_d = ALIGN(ui->data_len, 8) };
+ struct fscrypt_name nm;
/*
* Budget request settings: new direntry, changing the target inode,
@@ -559,17 +625,29 @@ static int ubifs_link(struct dentry *old_dentry, struct inode *dir,
ubifs_assert(inode_is_locked(dir));
ubifs_assert(inode_is_locked(inode));
- if (ubifs_crypt_is_encrypted(dir) &&
- !fscrypt_has_permitted_context(dir, inode))
- return -EPERM;
+ if (ubifs_crypt_is_encrypted(dir)) {
+ if (!fscrypt_has_permitted_context(dir, inode))
+ return -EPERM;
- err = dbg_check_synced_i_size(c, inode);
+ err = fscrypt_get_encryption_info(inode);
+ if (err)
+ return err;
+
+ if (!fscrypt_has_encryption_key(inode))
+ return -EPERM;
+ }
+
+ err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
if (err)
return err;
+ err = dbg_check_synced_i_size(c, inode);
+ if (err)
+ goto out_fname;
+
err = ubifs_budget_space(c, &req);
if (err)
- return err;
+ goto out_fname;
lock_2_inodes(dir, inode);
inc_nlink(inode);
@@ -578,13 +656,14 @@ static int ubifs_link(struct dentry *old_dentry, struct inode *dir,
dir->i_size += sz_change;
dir_ui->ui_size = dir->i_size;
dir->i_mtime = dir->i_ctime = inode->i_ctime;
- err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0, 0);
+ err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);
if (err)
goto out_cancel;
unlock_2_inodes(dir, inode);
ubifs_release_budget(c, &req);
d_instantiate(dentry, inode);
+ fscrypt_free_filename(&nm);
return 0;
out_cancel:
@@ -594,6 +673,8 @@ out_cancel:
unlock_2_inodes(dir, inode);
ubifs_release_budget(c, &req);
iput(inode);
+out_fname:
+ fscrypt_free_filename(&nm);
return err;
}
@@ -602,10 +683,10 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
struct ubifs_info *c = dir->i_sb->s_fs_info;
struct inode *inode = d_inode(dentry);
struct ubifs_inode *dir_ui = ubifs_inode(dir);
- int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
- int err, budgeted = 1;
+ int err, sz_change, budgeted = 1;
struct ubifs_budget_req req = { .mod_dent = 1, .dirtied_ino = 2 };
unsigned int saved_nlink = inode->i_nlink;
+ struct fscrypt_name nm;
/*
* Budget request settings: deletion direntry, deletion inode (+1 for
@@ -617,16 +698,29 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
dbg_gen("dent '%pd' from ino %lu (nlink %d) in dir ino %lu",
dentry, inode->i_ino,
inode->i_nlink, dir->i_ino);
+
+ if (ubifs_crypt_is_encrypted(dir)) {
+ err = fscrypt_get_encryption_info(dir);
+ if (err && err != -ENOKEY)
+ return err;
+ }
+
+ err = fscrypt_setup_filename(dir, &dentry->d_name, 1, &nm);
+ if (err)
+ return err;
+
+ sz_change = CALC_DENT_SIZE(fname_len(&nm));
+
ubifs_assert(inode_is_locked(dir));
ubifs_assert(inode_is_locked(inode));
err = dbg_check_synced_i_size(c, inode);
if (err)
- return err;
+ goto out_fname;
err = ubifs_budget_space(c, &req);
if (err) {
if (err != -ENOSPC)
- return err;
+ goto out_fname;
budgeted = 0;
}
@@ -636,7 +730,7 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
dir->i_size -= sz_change;
dir_ui->ui_size = dir->i_size;
dir->i_mtime = dir->i_ctime = inode->i_ctime;
- err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 1, 0);
+ err = ubifs_jnl_update(c, dir, &nm, inode, 1, 0);
if (err)
goto out_cancel;
unlock_2_inodes(dir, inode);
@@ -648,6 +742,7 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
c->bi.nospace = c->bi.nospace_rp = 0;
smp_wmb();
}
+ fscrypt_free_filename(&nm);
return 0;
out_cancel:
@@ -657,6 +752,8 @@ out_cancel:
unlock_2_inodes(dir, inode);
if (budgeted)
ubifs_release_budget(c, &req);
+out_fname:
+ fscrypt_free_filename(&nm);
return err;
}
@@ -671,7 +768,7 @@ out_cancel:
int ubifs_check_dir_empty(struct inode *dir)
{
struct ubifs_info *c = dir->i_sb->s_fs_info;
- struct qstr nm = { .name = NULL };
+ struct fscrypt_name nm = { 0 };
struct ubifs_dent_node *dent;
union ubifs_key key;
int err;
@@ -693,10 +790,10 @@ static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct ubifs_info *c = dir->i_sb->s_fs_info;
struct inode *inode = d_inode(dentry);
- int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
- int err, budgeted = 1;
+ int err, sz_change, budgeted = 1;
struct ubifs_inode *dir_ui = ubifs_inode(dir);
struct ubifs_budget_req req = { .mod_dent = 1, .dirtied_ino = 2 };
+ struct fscrypt_name nm;
/*
* Budget request settings: deletion direntry, deletion inode and
@@ -712,10 +809,22 @@ static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)
if (err)
return err;
+ if (ubifs_crypt_is_encrypted(dir)) {
+ err = fscrypt_get_encryption_info(dir);
+ if (err && err != -ENOKEY)
+ return err;
+ }
+
+ err = fscrypt_setup_filename(dir, &dentry->d_name, 1, &nm);
+ if (err)
+ return err;
+
+ sz_change = CALC_DENT_SIZE(fname_len(&nm));
+
err = ubifs_budget_space(c, &req);
if (err) {
if (err != -ENOSPC)
- return err;
+ goto out_fname;
budgeted = 0;
}
@@ -726,7 +835,7 @@ static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)
dir->i_size -= sz_change;
dir_ui->ui_size = dir->i_size;
dir->i_mtime = dir->i_ctime = inode->i_ctime;
- err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 1, 0);
+ err = ubifs_jnl_update(c, dir, &nm, inode, 1, 0);
if (err)
goto out_cancel;
unlock_2_inodes(dir, inode);
@@ -738,6 +847,7 @@ static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)
c->bi.nospace = c->bi.nospace_rp = 0;
smp_wmb();
}
+ fscrypt_free_filename(&nm);
return 0;
out_cancel:
@@ -748,6 +858,8 @@ out_cancel:
unlock_2_inodes(dir, inode);
if (budgeted)
ubifs_release_budget(c, &req);
+out_fname:
+ fscrypt_free_filename(&nm);
return err;
}
@@ -756,8 +868,9 @@ static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
struct inode *inode;
struct ubifs_inode *dir_ui = ubifs_inode(dir);
struct ubifs_info *c = dir->i_sb->s_fs_info;
- int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
+ int err, sz_change;
struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1 };
+ struct fscrypt_name nm;
/*
* Budget request settings: new inode, new direntry and changing parent
@@ -771,10 +884,27 @@ static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
if (err)
return err;
+ if (ubifs_crypt_is_encrypted(dir)) {
+ err = fscrypt_get_encryption_info(dir);
+ if (err)
+ goto out_budg;
+
+ if (!fscrypt_has_encryption_key(dir)) {
+ err = -EPERM;
+ goto out_budg;
+ }
+ }
+
+ err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
+ if (err)
+ goto out_budg;
+
+ sz_change = CALC_DENT_SIZE(fname_len(&nm));
+
inode = ubifs_new_inode(c, dir, S_IFDIR | mode);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
- goto out_budg;
+ goto out_fname;
}
err = ubifs_init_security(dir, inode, &dentry->d_name);
@@ -788,7 +918,7 @@ static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
dir->i_size += sz_change;
dir_ui->ui_size = dir->i_size;
dir->i_mtime = dir->i_ctime = inode->i_ctime;
- err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0, 0);
+ err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);
if (err) {
ubifs_err(c, "cannot create directory, error %d", err);
goto out_cancel;
@@ -797,6 +927,7 @@ static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
ubifs_release_budget(c, &req);
d_instantiate(dentry, inode);
+ fscrypt_free_filename(&nm);
return 0;
out_cancel:
@@ -807,6 +938,8 @@ out_cancel:
out_inode:
make_bad_inode(inode);
iput(inode);
+out_fname:
+ fscrypt_free_filename(&nm);
out_budg:
ubifs_release_budget(c, &req);
return err;
@@ -820,11 +953,12 @@ static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
struct ubifs_inode *dir_ui = ubifs_inode(dir);
struct ubifs_info *c = dir->i_sb->s_fs_info;
union ubifs_dev_desc *dev = NULL;
- int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
+ int sz_change;
int err, devlen = 0;
struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
.new_ino_d = ALIGN(devlen, 8),
.dirtied_ino = 1 };
+ struct fscrypt_name nm;
/*
* Budget request settings: new inode, new direntry and changing parent
@@ -846,11 +980,28 @@ static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
return err;
}
+ if (ubifs_crypt_is_encrypted(dir)) {
+ err = fscrypt_get_encryption_info(dir);
+ if (err)
+ goto out_budg;
+
+ if (!fscrypt_has_encryption_key(dir)) {
+ err = -EPERM;
+ goto out_budg;
+ }
+ }
+
+ err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
+ if (err)
+ goto out_budg;
+
+ sz_change = CALC_DENT_SIZE(fname_len(&nm));
+
inode = ubifs_new_inode(c, dir, mode);
if (IS_ERR(inode)) {
kfree(dev);
err = PTR_ERR(inode);
- goto out_budg;
+ goto out_fname;
}
init_special_inode(inode, inode->i_mode, rdev);
@@ -867,7 +1018,7 @@ static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
dir->i_size += sz_change;
dir_ui->ui_size = dir->i_size;
dir->i_mtime = dir->i_ctime = inode->i_ctime;
- err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0, 0);
+ err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);
if (err)
goto out_cancel;
mutex_unlock(&dir_ui->ui_mutex);
@@ -875,6 +1026,7 @@ static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
ubifs_release_budget(c, &req);
insert_inode_hash(inode);
d_instantiate(dentry, inode);
+ fscrypt_free_filename(&nm);
return 0;
out_cancel:
@@ -884,6 +1036,8 @@ out_cancel:
out_inode:
make_bad_inode(inode);
iput(inode);
+out_fname:
+ fscrypt_free_filename(&nm);
out_budg:
ubifs_release_budget(c, &req);
return err;
@@ -1019,15 +1173,14 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct ubifs_inode *old_inode_ui = ubifs_inode(old_inode);
int err, release, sync = 0, move = (new_dir != old_dir);
int is_dir = S_ISDIR(old_inode->i_mode);
- int unlink = !!new_inode;
- int new_sz = CALC_DENT_SIZE(new_dentry->d_name.len);
- int old_sz = CALC_DENT_SIZE(old_dentry->d_name.len);
+ int unlink = !!new_inode, new_sz, old_sz;
struct ubifs_budget_req req = { .new_dent = 1, .mod_dent = 1,
.dirtied_ino = 3 };
struct ubifs_budget_req ino_req = { .dirtied_ino = 1,
.dirtied_ino_d = ALIGN(old_inode_ui->data_len, 8) };
struct timespec time;
unsigned int uninitialized_var(saved_nlink);
+ struct fscrypt_name old_nm, new_nm;
/*
* Budget request settings: deletion direntry, new direntry, removing
@@ -1058,11 +1211,29 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
return err;
}
- err = ubifs_budget_space(c, &req);
+ err = fscrypt_setup_filename(old_dir, &old_dentry->d_name, 0, &old_nm);
if (err)
return err;
+
+ err = fscrypt_setup_filename(new_dir, &new_dentry->d_name, 0, &new_nm);
+ if (err) {
+ fscrypt_free_filename(&old_nm);
+ return err;
+ }
+
+ new_sz = CALC_DENT_SIZE(fname_len(&new_nm));
+ old_sz = CALC_DENT_SIZE(fname_len(&old_nm));
+
+ err = ubifs_budget_space(c, &req);
+ if (err) {
+ fscrypt_free_filename(&old_nm);
+ fscrypt_free_filename(&new_nm);
+ return err;
+ }
err = ubifs_budget_space(c, &ino_req);
if (err) {
+ fscrypt_free_filename(&old_nm);
+ fscrypt_free_filename(&new_nm);
ubifs_release_budget(c, &req);
return err;
}
@@ -1137,7 +1308,7 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (unlink && IS_SYNC(new_inode))
sync = 1;
}
- err = ubifs_jnl_rename(c, old_dir, old_dentry, new_dir, new_dentry,
+ err = ubifs_jnl_rename(c, old_dir, old_inode, &old_nm, new_dir, new_inode, &new_nm,
sync);
if (err)
goto out_cancel;
@@ -1154,6 +1325,9 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
ubifs_release_budget(c, &ino_req);
if (IS_SYNC(old_inode))
err = old_inode->i_sb->s_op->write_inode(old_inode, NULL);
+
+ fscrypt_free_filename(&old_nm);
+ fscrypt_free_filename(&new_nm);
return err;
out_cancel:
@@ -1178,6 +1352,8 @@ out_cancel:
unlock_3_inodes(old_dir, new_dir, new_inode);
ubifs_release_budget(c, &ino_req);
ubifs_release_budget(c, &req);
+ fscrypt_free_filename(&old_nm);
+ fscrypt_free_filename(&new_nm);
return err;
}
diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index da694e520ec8..eb1cef8032e7 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -530,7 +530,7 @@ static void mark_inode_clean(struct ubifs_info *c, struct ubifs_inode *ui)
* success. In case of failure, a negative error code is returned.
*/
int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
- const struct qstr *nm, const struct inode *inode,
+ const struct fscrypt_name *nm, const struct inode *inode,
int deletion, int xent)
{
int err, dlen, ilen, len, lnum, ino_offs, dent_offs;
@@ -542,11 +542,11 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
struct ubifs_ino_node *ino;
union ubifs_key dent_key, ino_key;
- dbg_jnl("ino %lu, dent '%.*s', data len %d in dir ino %lu",
- inode->i_ino, nm->len, nm->name, ui->data_len, dir->i_ino);
+ //dbg_jnl("ino %lu, dent '%.*s', data len %d in dir ino %lu",
+ // inode->i_ino, nm->len, nm->name, ui->data_len, dir->i_ino);
ubifs_assert(mutex_is_locked(&host_ui->ui_mutex));
- dlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
+ dlen = UBIFS_DENT_NODE_SZ + fname_len(nm) + 1;
ilen = UBIFS_INO_NODE_SZ;
/*
@@ -587,9 +587,10 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
key_write(c, &dent_key, dent->key);
dent->inum = deletion ? 0 : cpu_to_le64(inode->i_ino);
dent->type = get_dent_type(inode->i_mode);
- dent->nlen = cpu_to_le16(nm->len);
- memcpy(dent->name, nm->name, nm->len);
- dent->name[nm->len] = '\0';
+ dent->nlen = cpu_to_le16(fname_len(nm));
+ memcpy(dent->name, fname_name(nm), fname_len(nm));
+ dent->name[fname_len(nm)] = '\0';
+
zero_dent_node_unused(dent);
ubifs_prep_grp_node(c, dent, dlen, 0);
@@ -936,30 +937,31 @@ int ubifs_jnl_delete_inode(struct ubifs_info *c, const struct inode *inode)
* returned.
*/
int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
- const struct dentry *old_dentry,
+ const struct inode *old_inode,
+ const struct fscrypt_name *old_nm,
const struct inode *new_dir,
- const struct dentry *new_dentry, int sync)
+ const struct inode *new_inode,
+ const struct fscrypt_name *new_nm,
+ int sync)
{
void *p;
union ubifs_key key;
struct ubifs_dent_node *dent, *dent2;
int err, dlen1, dlen2, ilen, lnum, offs, len;
- const struct inode *old_inode = d_inode(old_dentry);
- const struct inode *new_inode = d_inode(new_dentry);
int aligned_dlen1, aligned_dlen2, plen = UBIFS_INO_NODE_SZ;
int last_reference = !!(new_inode && new_inode->i_nlink == 0);
int move = (old_dir != new_dir);
struct ubifs_inode *uninitialized_var(new_ui);
- dbg_jnl("dent '%pd' in dir ino %lu to dent '%pd' in dir ino %lu",
- old_dentry, old_dir->i_ino, new_dentry, new_dir->i_ino);
+ //dbg_jnl("dent '%pd' in dir ino %lu to dent '%pd' in dir ino %lu",
+ // old_dentry, old_dir->i_ino, new_dentry, new_dir->i_ino);
ubifs_assert(ubifs_inode(old_dir)->data_len == 0);
ubifs_assert(ubifs_inode(new_dir)->data_len == 0);
ubifs_assert(mutex_is_locked(&ubifs_inode(old_dir)->ui_mutex));
ubifs_assert(mutex_is_locked(&ubifs_inode(new_dir)->ui_mutex));
- dlen1 = UBIFS_DENT_NODE_SZ + new_dentry->d_name.len + 1;
- dlen2 = UBIFS_DENT_NODE_SZ + old_dentry->d_name.len + 1;
+ dlen1 = UBIFS_DENT_NODE_SZ + fname_len(new_nm) + 1;
+ dlen2 = UBIFS_DENT_NODE_SZ + fname_len(old_nm) + 1;
if (new_inode) {
new_ui = ubifs_inode(new_inode);
ubifs_assert(mutex_is_locked(&new_ui->ui_mutex));
@@ -985,25 +987,24 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
/* Make new dent */
dent->ch.node_type = UBIFS_DENT_NODE;
- dent_key_init_flash(c, &dent->key, new_dir->i_ino, &new_dentry->d_name);
+ dent_key_init_flash(c, &dent->key, new_dir->i_ino, new_nm);
dent->inum = cpu_to_le64(old_inode->i_ino);
dent->type = get_dent_type(old_inode->i_mode);
- dent->nlen = cpu_to_le16(new_dentry->d_name.len);
- memcpy(dent->name, new_dentry->d_name.name, new_dentry->d_name.len);
- dent->name[new_dentry->d_name.len] = '\0';
+ dent->nlen = cpu_to_le16(fname_len(new_nm));
+ memcpy(dent->name, fname_name(new_nm), fname_len(new_nm));
+ dent->name[fname_len(new_nm)] = '\0';
zero_dent_node_unused(dent);
ubifs_prep_grp_node(c, dent, dlen1, 0);
/* Make deletion dent */
dent2 = (void *)dent + aligned_dlen1;
dent2->ch.node_type = UBIFS_DENT_NODE;
- dent_key_init_flash(c, &dent2->key, old_dir->i_ino,
- &old_dentry->d_name);
+ dent_key_init_flash(c, &dent2->key, old_dir->i_ino, old_nm);
dent2->inum = 0;
dent2->type = DT_UNKNOWN;
- dent2->nlen = cpu_to_le16(old_dentry->d_name.len);
- memcpy(dent2->name, old_dentry->d_name.name, old_dentry->d_name.len);
- dent2->name[old_dentry->d_name.len] = '\0';
+ dent2->nlen = cpu_to_le16(fname_len(old_nm));
+ memcpy(dent2->name, fname_name(old_nm), fname_len(old_nm));
+ dent2->name[fname_len(old_nm)] = '\0';
zero_dent_node_unused(dent2);
ubifs_prep_grp_node(c, dent2, dlen2, 0);
@@ -1044,8 +1045,8 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
}
release_head(c, BASEHD);
- dent_key_init(c, &key, new_dir->i_ino, &new_dentry->d_name);
- err = ubifs_tnc_add_nm(c, &key, lnum, offs, dlen1, &new_dentry->d_name);
+ dent_key_init(c, &key, new_dir->i_ino, new_nm);
+ err = ubifs_tnc_add_nm(c, &key, lnum, offs, dlen1, new_nm);
if (err)
goto out_ro;
@@ -1053,8 +1054,8 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
if (err)
goto out_ro;
- dent_key_init(c, &key, old_dir->i_ino, &old_dentry->d_name);
- err = ubifs_tnc_remove_nm(c, &key, &old_dentry->d_name);
+ dent_key_init(c, &key, old_dir->i_ino, old_nm);
+ err = ubifs_tnc_remove_nm(c, &key, old_nm);
if (err)
goto out_ro;
@@ -1117,7 +1118,7 @@ out_free:
* This function is used when an inode is truncated and the last data node of
* the inode has to be re-compressed/encrypted and re-written.
*/
-static int truncate_data_node(const struct ubifs_info *c, struct inode *inode,
+static int truncate_data_node(const struct ubifs_info *c, const struct inode *inode,
unsigned int block, struct ubifs_data_node *dn,
int *new_len)
{
@@ -1338,7 +1339,8 @@ out_free:
* error code in case of failure.
*/
int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
- const struct inode *inode, const struct qstr *nm)
+ const struct inode *inode,
+ const struct fscrypt_name *nm)
{
int err, xlen, hlen, len, lnum, xent_offs, aligned_xlen;
struct ubifs_dent_node *xent;
@@ -1347,9 +1349,9 @@ int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
int sync = IS_DIRSYNC(host);
struct ubifs_inode *host_ui = ubifs_inode(host);
- dbg_jnl("host %lu, xattr ino %lu, name '%s', data len %d",
- host->i_ino, inode->i_ino, nm->name,
- ubifs_inode(inode)->data_len);
+ //dbg_jnl("host %lu, xattr ino %lu, name '%s', data len %d",
+ // host->i_ino, inode->i_ino, nm->name,
+ // ubifs_inode(inode)->data_len);
ubifs_assert(inode->i_nlink == 0);
ubifs_assert(mutex_is_locked(&host_ui->ui_mutex));
@@ -1357,7 +1359,7 @@ int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
* Since we are deleting the inode, we do not bother to attach any data
* to it and assume its length is %UBIFS_INO_NODE_SZ.
*/
- xlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
+ xlen = UBIFS_DENT_NODE_SZ + fname_len(nm) + 1;
aligned_xlen = ALIGN(xlen, 8);
hlen = host_ui->data_len + UBIFS_INO_NODE_SZ;
len = aligned_xlen + UBIFS_INO_NODE_SZ + ALIGN(hlen, 8);
@@ -1378,9 +1380,9 @@ int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
key_write(c, &xent_key, xent->key);
xent->inum = 0;
xent->type = get_dent_type(inode->i_mode);
- xent->nlen = cpu_to_le16(nm->len);
- memcpy(xent->name, nm->name, nm->len);
- xent->name[nm->len] = '\0';
+ xent->nlen = cpu_to_le16(fname_len(nm));
+ memcpy(xent->name, fname_name(nm), fname_len(nm));
+ xent->name[fname_len(nm)] = '\0';
zero_dent_node_unused(xent);
ubifs_prep_grp_node(c, xent, xlen, 0);
diff --git a/fs/ubifs/key.h b/fs/ubifs/key.h
index ca4371fdfa7d..7547be512db2 100644
--- a/fs/ubifs/key.h
+++ b/fs/ubifs/key.h
@@ -153,13 +153,13 @@ static inline void highest_ino_key(const struct ubifs_info *c,
* @c: UBIFS file-system description object
* @key: key to initialize
* @inum: parent inode number
- * @nm: direntry name and length
+ * @nm: direntry name and length. Not a string when encrypted!
*/
static inline void dent_key_init(const struct ubifs_info *c,
union ubifs_key *key, ino_t inum,
- const struct qstr *nm)
+ const struct fscrypt_name *nm)
{
- uint32_t hash = c->key_hash(nm->name, nm->len);
+ uint32_t hash = c->key_hash(fname_name(nm), fname_len(nm));
ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
key->u32[0] = inum;
@@ -191,10 +191,11 @@ static inline void dent_key_init_hash(const struct ubifs_info *c,
* @nm: direntry name and length
*/
static inline void dent_key_init_flash(const struct ubifs_info *c, void *k,
- ino_t inum, const struct qstr *nm)
+ ino_t inum,
+ const struct fscrypt_name *nm)
{
union ubifs_key *key = k;
- uint32_t hash = c->key_hash(nm->name, nm->len);
+ uint32_t hash = c->key_hash(fname_name(nm), fname_len(nm));
ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
key->j32[0] = cpu_to_le32(inum);
@@ -225,9 +226,9 @@ static inline void lowest_dent_key(const struct ubifs_info *c,
*/
static inline void xent_key_init(const struct ubifs_info *c,
union ubifs_key *key, ino_t inum,
- const struct qstr *nm)
+ const struct fscrypt_name *nm)
{
- uint32_t hash = c->key_hash(nm->name, nm->len);
+ uint32_t hash = c->key_hash(fname_name(nm), fname_len(nm));
ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
key->u32[0] = inum;
@@ -242,10 +243,10 @@ static inline void xent_key_init(const struct ubifs_info *c,
* @nm: extended attribute entry name and length
*/
static inline void xent_key_init_flash(const struct ubifs_info *c, void *k,
- ino_t inum, const struct qstr *nm)
+ ino_t inum, const struct fscrypt_name *nm)
{
union ubifs_key *key = k;
- uint32_t hash = c->key_hash(nm->name, nm->len);
+ uint32_t hash = c->key_hash(fname_name(nm), fname_len(nm));
ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
key->j32[0] = cpu_to_le32(inum);
diff --git a/fs/ubifs/replay.c b/fs/ubifs/replay.c
index f02adc49425b..4143982e3701 100644
--- a/fs/ubifs/replay.c
+++ b/fs/ubifs/replay.c
@@ -61,7 +61,7 @@ struct replay_entry {
struct list_head list;
union ubifs_key key;
union {
- struct qstr nm;
+ struct fscrypt_name nm;
struct {
loff_t old_size;
loff_t new_size;
@@ -327,7 +327,7 @@ static void destroy_replay_list(struct ubifs_info *c)
list_for_each_entry_safe(r, tmp, &c->replay_list, list) {
if (is_hash_key(c, &r->key))
- kfree(r->nm.name);
+ kfree(fname_name(&r->nm));
list_del(&r->list);
kfree(r);
}
@@ -430,10 +430,10 @@ static int insert_dent(struct ubifs_info *c, int lnum, int offs, int len,
r->deletion = !!deletion;
r->sqnum = sqnum;
key_copy(c, key, &r->key);
- r->nm.len = nlen;
+ fname_len(&r->nm) = nlen;
memcpy(nbuf, name, nlen);
nbuf[nlen] = '\0';
- r->nm.name = nbuf;
+ fname_name(&r->nm) = nbuf;
list_add_tail(&r->list, &c->replay_list);
return 0;
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index fa9a20cc60d6..0d0030461cb4 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -519,7 +519,7 @@ static int fallible_read_node(struct ubifs_info *c, const union ubifs_key *key,
* of failure, a negative error code is returned.
*/
static int matches_name(struct ubifs_info *c, struct ubifs_zbranch *zbr,
- const struct qstr *nm)
+ const struct fscrypt_name *nm)
{
struct ubifs_dent_node *dent;
int nlen, err;
@@ -542,11 +542,11 @@ static int matches_name(struct ubifs_info *c, struct ubifs_zbranch *zbr,
dent = zbr->leaf;
nlen = le16_to_cpu(dent->nlen);
- err = memcmp(dent->name, nm->name, min_t(int, nlen, nm->len));
+ err = memcmp(dent->name, fname_name(nm), min_t(int, nlen, fname_len(nm)));
if (err == 0) {
- if (nlen == nm->len)
+ if (nlen == fname_len(nm))
return NAME_MATCHES;
- else if (nlen < nm->len)
+ else if (nlen < fname_len(nm))
return NAME_LESS;
else
return NAME_GREATER;
@@ -689,7 +689,7 @@ static int tnc_prev(struct ubifs_info *c, struct ubifs_znode **zn, int *n)
*/
static int resolve_collision(struct ubifs_info *c, const union ubifs_key *key,
struct ubifs_znode **zn, int *n,
- const struct qstr *nm)
+ const struct fscrypt_name *nm)
{
int err;
@@ -807,7 +807,7 @@ static int resolve_collision(struct ubifs_info *c, const union ubifs_key *key,
*/
static int fallible_matches_name(struct ubifs_info *c,
struct ubifs_zbranch *zbr,
- const struct qstr *nm)
+ const struct fscrypt_name *nm)
{
struct ubifs_dent_node *dent;
int nlen, err;
@@ -835,11 +835,11 @@ static int fallible_matches_name(struct ubifs_info *c,
dent = zbr->leaf;
nlen = le16_to_cpu(dent->nlen);
- err = memcmp(dent->name, nm->name, min_t(int, nlen, nm->len));
+ err = memcmp(dent->name, fname_name(nm), min_t(int, nlen, fname_len(nm)));
if (err == 0) {
- if (nlen == nm->len)
+ if (nlen == fname_len(nm))
return NAME_MATCHES;
- else if (nlen < nm->len)
+ else if (nlen < fname_len(nm))
return NAME_LESS;
else
return NAME_GREATER;
@@ -878,7 +878,8 @@ out_free:
static int fallible_resolve_collision(struct ubifs_info *c,
const union ubifs_key *key,
struct ubifs_znode **zn, int *n,
- const struct qstr *nm, int adding)
+ const struct fscrypt_name *nm,
+ int adding)
{
struct ubifs_znode *o_znode = NULL, *znode = *zn;
int uninitialized_var(o_n), err, cmp, unsure = 0, nn = *n;
@@ -1789,12 +1790,12 @@ int ubifs_tnc_bulk_read(struct ubifs_info *c, struct bu_info *bu)
* was not found, and a negative error code in case of failure.
*/
static int do_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
- void *node, const struct qstr *nm)
+ void *node, const struct fscrypt_name *nm)
{
int found, n, err;
struct ubifs_znode *znode;
- dbg_tnck(key, "name '%.*s' key ", nm->len, nm->name);
+ //dbg_tnck(key, "name '%.*s' key ", nm->len, nm->name);
mutex_lock(&c->tnc_mutex);
found = ubifs_lookup_level0(c, key, &znode, &n);
if (!found) {
@@ -1837,7 +1838,7 @@ out_unlock:
* was not found, and a negative error code in case of failure.
*/
int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
- void *node, const struct qstr *nm)
+ void *node, const struct fscrypt_name *nm)
{
int err, len;
const struct ubifs_dent_node *dent = node;
@@ -1851,7 +1852,7 @@ int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
return err;
len = le16_to_cpu(dent->nlen);
- if (nm->len == len && !memcmp(dent->name, nm->name, len))
+ if (fname_len(nm) == len && !memcmp(dent->name, fname_name(nm), len))
return 0;
/*
@@ -2279,14 +2280,15 @@ out_unlock:
* may have collisions, like directory entry keys.
*/
int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key,
- int lnum, int offs, int len, const struct qstr *nm)
+ int lnum, int offs, int len,
+ const struct fscrypt_name *nm)
{
int found, n, err = 0;
struct ubifs_znode *znode;
mutex_lock(&c->tnc_mutex);
- dbg_tnck(key, "LEB %d:%d, name '%.*s', key ",
- lnum, offs, nm->len, nm->name);
+ //dbg_tnck(key, "LEB %d:%d, name '%.*s', key ",
+ // lnum, offs, nm->len, nm->name);
found = lookup_level0_dirty(c, key, &znode, &n);
if (found < 0) {
err = found;
@@ -2344,7 +2346,7 @@ int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key,
* by passing 'ubifs_tnc_remove_nm()' the same key but
* an unmatchable name.
*/
- struct qstr noname = { .name = "" };
+ struct fscrypt_name noname = { .disk_name = { .name = "", .len = 1 } };
err = dbg_check_tnc(c, 0);
mutex_unlock(&c->tnc_mutex);
@@ -2514,13 +2516,13 @@ out_unlock:
* Returns %0 on success or negative error code on failure.
*/
int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key,
- const struct qstr *nm)
+ const struct fscrypt_name *nm)
{
int n, err;
struct ubifs_znode *znode;
mutex_lock(&c->tnc_mutex);
- dbg_tnck(key, "%.*s, key ", nm->len, nm->name);
+ //dbg_tnck(key, "%.*s, key ", nm->len, nm->name);
err = lookup_level0_dirty(c, key, &znode, &n);
if (err < 0)
goto out_unlock;
@@ -2669,7 +2671,7 @@ int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum)
{
union ubifs_key key1, key2;
struct ubifs_dent_node *xent, *pxent = NULL;
- struct qstr nm = { .name = NULL };
+ struct fscrypt_name nm = {0};
dbg_tnc("ino %lu", (unsigned long)inum);
@@ -2694,8 +2696,8 @@ int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum)
dbg_tnc("xent '%s', ino %lu", xent->name,
(unsigned long)xattr_inum);
- nm.name = xent->name;
- nm.len = le16_to_cpu(xent->nlen);
+ fname_name(&nm) = xent->name;
+ fname_len(&nm) = le16_to_cpu(xent->nlen);
err = ubifs_tnc_remove_nm(c, &key1, &nm);
if (err) {
kfree(xent);
@@ -2747,7 +2749,7 @@ int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum)
*/
struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
union ubifs_key *key,
- const struct qstr *nm)
+ const struct fscrypt_name *nm)
{
int n, err, type = key_type(c, key);
struct ubifs_znode *znode;
@@ -2755,7 +2757,7 @@ struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
struct ubifs_zbranch *zbr;
union ubifs_key *dkey;
- dbg_tnck(key, "%s ", nm->name ? (char *)nm->name : "(lowest)");
+ //dbg_tnck(key, "%s ", nm->name ? (char *)nm->name : "(lowest)");
ubifs_assert(is_hash_key(c, key));
mutex_lock(&c->tnc_mutex);
@@ -2763,7 +2765,7 @@ struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
if (unlikely(err < 0))
goto out_unlock;
- if (nm->name) {
+ if (fname_len(nm) > 0) {
if (err) {
/* Handle collisions */
err = resolve_collision(c, key, &znode, &n, nm);
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 456f22aed35c..f91ef52a4523 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -1521,20 +1521,23 @@ int ubifs_consolidate_log(struct ubifs_info *c);
/* journal.c */
int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
- const struct qstr *nm, const struct inode *inode,
+ const struct fscrypt_name *nm, const struct inode *inode,
int deletion, int xent);
int ubifs_jnl_write_data(struct ubifs_info *c, const struct inode *inode,
const union ubifs_key *key, const void *buf, int len);
int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode);
int ubifs_jnl_delete_inode(struct ubifs_info *c, const struct inode *inode);
int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
- const struct dentry *old_dentry,
+ const struct inode *old_inode,
+ const struct fscrypt_name *old_nm,
const struct inode *new_dir,
- const struct dentry *new_dentry, int sync);
+ const struct inode *new_inode,
+ const struct fscrypt_name *new_nm,
+ int sync);
int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode,
loff_t old_size, loff_t new_size);
int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
- const struct inode *inode, const struct qstr *nm);
+ const struct inode *inode, const struct fscrypt_name *nm);
int ubifs_jnl_change_xattr(struct ubifs_info *c, const struct inode *inode1,
const struct inode *inode2);
@@ -1569,7 +1572,7 @@ int ubifs_save_dirty_idx_lnums(struct ubifs_info *c);
int ubifs_lookup_level0(struct ubifs_info *c, const union ubifs_key *key,
struct ubifs_znode **zn, int *n);
int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
- void *node, const struct qstr *nm);
+ void *node, const struct fscrypt_name *nm);
int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,
void *node, int *lnum, int *offs);
int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum,
@@ -1577,16 +1580,16 @@ int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum,
int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key,
int old_lnum, int old_offs, int lnum, int offs, int len);
int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key,
- int lnum, int offs, int len, const struct qstr *nm);
+ int lnum, int offs, int len, const struct fscrypt_name *nm);
int ubifs_tnc_remove(struct ubifs_info *c, const union ubifs_key *key);
int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key,
- const struct qstr *nm);
+ const struct fscrypt_name *nm);
int ubifs_tnc_remove_range(struct ubifs_info *c, union ubifs_key *from_key,
union ubifs_key *to_key);
int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum);
struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
union ubifs_key *key,
- const struct qstr *nm);
+ const struct fscrypt_name *nm);
void ubifs_tnc_close(struct ubifs_info *c);
int ubifs_tnc_has_node(struct ubifs_info *c, union ubifs_key *key, int level,
int lnum, int offs, int is_idx);
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index d3b53c55ea39..469b3ff9748c 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -97,7 +97,7 @@ static const struct file_operations empty_fops;
* of failure.
*/
static int create_xattr(struct ubifs_info *c, struct inode *host,
- const struct qstr *nm, const void *value, int size)
+ const struct fscrypt_name *nm, const void *value, int size)
{
int err, names_len;
struct inode *inode;
@@ -117,7 +117,7 @@ static int create_xattr(struct ubifs_info *c, struct inode *host,
* extended attributes if the name list becomes larger. This limitation
* is artificial for UBIFS, though.
*/
- names_len = host_ui->xattr_names + host_ui->xattr_cnt + nm->len + 1;
+ names_len = host_ui->xattr_names + host_ui->xattr_cnt + fname_len(nm) + 1;
if (names_len > XATTR_LIST_MAX) {
ubifs_err(c, "cannot add one more xattr name to inode %lu, total names length would become %d, max. is %d",
host->i_ino, names_len, XATTR_LIST_MAX);
@@ -154,9 +154,9 @@ static int create_xattr(struct ubifs_info *c, struct inode *host,
mutex_lock(&host_ui->ui_mutex);
host->i_ctime = ubifs_current_time(host);
host_ui->xattr_cnt += 1;
- host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
+ host_ui->xattr_size += CALC_DENT_SIZE(fname_len(nm));
host_ui->xattr_size += CALC_XATTR_BYTES(size);
- host_ui->xattr_names += nm->len;
+ host_ui->xattr_names += fname_len(nm);
/*
* We handle UBIFS_XATTR_NAME_ENCRYPTION_CONTEXT here because we
@@ -164,7 +164,7 @@ static int create_xattr(struct ubifs_info *c, struct inode *host,
* To avoid multiple updates of the same inode in the same operation,
* let's do it here.
*/
- if (strcmp(nm->name, UBIFS_XATTR_NAME_ENCRYPTION_CONTEXT) == 0)
+ if (strcmp(fname_name(nm), UBIFS_XATTR_NAME_ENCRYPTION_CONTEXT) == 0)
host_ui->flags |= UBIFS_CRYPT_FL;
err = ubifs_jnl_update(c, host, nm, inode, 0, 1);
@@ -179,7 +179,7 @@ static int create_xattr(struct ubifs_info *c, struct inode *host,
out_cancel:
host_ui->xattr_cnt -= 1;
- host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
+ host_ui->xattr_size -= CALC_DENT_SIZE(fname_len(nm));
host_ui->xattr_size -= CALC_XATTR_BYTES(size);
host_ui->flags &= ~UBIFS_CRYPT_FL;
mutex_unlock(&host_ui->ui_mutex);
@@ -281,7 +281,7 @@ int ubifs_xattr_set(struct inode *host, const char *name, const void *value,
{
struct inode *inode;
struct ubifs_info *c = host->i_sb->s_fs_info;
- struct qstr nm = QSTR_INIT(name, strlen(name));
+ struct fscrypt_name nm = { .disk_name = FSTR_INIT((char *)name, strlen(name))};
struct ubifs_dent_node *xent;
union ubifs_key key;
int err;
@@ -297,7 +297,7 @@ int ubifs_xattr_set(struct inode *host, const char *name, const void *value,
if (size > UBIFS_MAX_INO_DATA)
return -ERANGE;
- if (nm.len > UBIFS_MAX_NLEN)
+ if (fname_len(&nm) > UBIFS_MAX_NLEN)
return -ENAMETOOLONG;
xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
@@ -347,13 +347,13 @@ ssize_t ubifs_xattr_get(struct inode *host, const char *name, void *buf,
{
struct inode *inode;
struct ubifs_info *c = host->i_sb->s_fs_info;
- struct qstr nm = QSTR_INIT(name, strlen(name));
+ struct fscrypt_name nm = { .disk_name = FSTR_INIT((char *)name, strlen(name))};
struct ubifs_inode *ui;
struct ubifs_dent_node *xent;
union ubifs_key key;
int err;
- if (nm.len > UBIFS_MAX_NLEN)
+ if (fname_len(&nm) > UBIFS_MAX_NLEN)
return -ENAMETOOLONG;
xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
@@ -422,7 +422,7 @@ ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size)
struct ubifs_inode *host_ui = ubifs_inode(host);
struct ubifs_dent_node *xent, *pxent = NULL;
int err, len, written = 0;
- struct qstr nm = { .name = NULL };
+ struct fscrypt_name nm = {0};
dbg_gen("ino %lu ('%pd'), buffer size %zd", host->i_ino,
dentry, size);
@@ -446,12 +446,12 @@ ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size)
break;
}
- nm.name = xent->name;
- nm.len = le16_to_cpu(xent->nlen);
+ fname_name(&nm) = xent->name;
+ fname_len(&nm) = le16_to_cpu(xent->nlen);
if (xattr_visible(xent->name)) {
- memcpy(buffer + written, nm.name, nm.len + 1);
- written += nm.len + 1;
+ memcpy(buffer + written, fname_name(&nm), fname_len(&nm) + 1);
+ written += fname_len(&nm) + 1;
}
kfree(pxent);
@@ -470,7 +470,7 @@ ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size)
}
static int remove_xattr(struct ubifs_info *c, struct inode *host,
- struct inode *inode, const struct qstr *nm)
+ struct inode *inode, const struct fscrypt_name *nm)
{
int err;
struct ubifs_inode *host_ui = ubifs_inode(host);
@@ -487,9 +487,9 @@ static int remove_xattr(struct ubifs_info *c, struct inode *host,
mutex_lock(&host_ui->ui_mutex);
host->i_ctime = ubifs_current_time(host);
host_ui->xattr_cnt -= 1;
- host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
+ host_ui->xattr_size -= CALC_DENT_SIZE(fname_len(nm));
host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
- host_ui->xattr_names -= nm->len;
+ host_ui->xattr_names -= fname_len(nm);
err = ubifs_jnl_delete_xattr(c, host, inode, nm);
if (err)
@@ -501,7 +501,7 @@ static int remove_xattr(struct ubifs_info *c, struct inode *host,
out_cancel:
host_ui->xattr_cnt += 1;
- host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
+ host_ui->xattr_size += CALC_DENT_SIZE(fname_len(nm));
host_ui->xattr_size += CALC_XATTR_BYTES(ui->data_len);
mutex_unlock(&host_ui->ui_mutex);
ubifs_release_budget(c, &req);
@@ -513,14 +513,14 @@ static int ubifs_xattr_remove(struct inode *host, const char *name)
{
struct inode *inode;
struct ubifs_info *c = host->i_sb->s_fs_info;
- struct qstr nm = QSTR_INIT(name, strlen(name));
+ struct fscrypt_name nm = { .disk_name = FSTR_INIT((char *)name, strlen(name))};
struct ubifs_dent_node *xent;
union ubifs_key key;
int err;
ubifs_assert(inode_is_locked(host));
- if (nm.len > UBIFS_MAX_NLEN)
+ if (fname_len(&nm) > UBIFS_MAX_NLEN)
return -ENAMETOOLONG;
xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
--
2.7.3
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