#include <linux/quotaops.h>
#include <linux/buffer_head.h>
#include <linux/bio.h>
+#include <linux/iversion.h>
#include "ext4.h"
#include "ext4_jbd2.h"
"empty directory '%.*s' has too many links (%u)",
dentry->d_name.len, dentry->d_name.name,
inode->i_nlink);
- inode->i_version++;
+ inode_inc_iversion(inode);
clear_nlink(inode);
/* There's no need to set i_disksize: the fact that i_nlink is
* zero will ensure that the right thing happens during any
struct inode *inode;
int err, len = strlen(symname);
int credits;
- bool encryption_required;
struct fscrypt_str disk_link;
- struct fscrypt_symlink_data *sd = NULL;
if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb))))
return -EIO;
- disk_link.len = len + 1;
- disk_link.name = (char *) symname;
-
- encryption_required = (ext4_encrypted_inode(dir) ||
- DUMMY_ENCRYPTION_ENABLED(EXT4_SB(dir->i_sb)));
- if (encryption_required) {
- err = fscrypt_get_encryption_info(dir);
- if (err)
- return err;
- if (!fscrypt_has_encryption_key(dir))
- return -ENOKEY;
- disk_link.len = (fscrypt_fname_encrypted_size(dir, len) +
- sizeof(struct fscrypt_symlink_data));
- sd = kzalloc(disk_link.len, GFP_KERNEL);
- if (!sd)
- return -ENOMEM;
- }
-
- if (disk_link.len > dir->i_sb->s_blocksize) {
- err = -ENAMETOOLONG;
- goto err_free_sd;
- }
+ err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
+ &disk_link);
+ if (err)
+ return err;
err = dquot_initialize(dir);
if (err)
- goto err_free_sd;
+ return err;
if ((disk_link.len > EXT4_N_BLOCKS * 4)) {
/*
if (IS_ERR(inode)) {
if (handle)
ext4_journal_stop(handle);
- err = PTR_ERR(inode);
- goto err_free_sd;
+ return PTR_ERR(inode);
}
- if (encryption_required) {
- struct qstr istr;
- struct fscrypt_str ostr =
- FSTR_INIT(sd->encrypted_path, disk_link.len);
-
- istr.name = (const unsigned char *) symname;
- istr.len = len;
- err = fscrypt_fname_usr_to_disk(inode, &istr, &ostr);
+ if (IS_ENCRYPTED(inode)) {
+ err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
if (err)
goto err_drop_inode;
- sd->len = cpu_to_le16(ostr.len);
- disk_link.name = (char *) sd;
inode->i_op = &ext4_encrypted_symlink_inode_operations;
}
if ((disk_link.len > EXT4_N_BLOCKS * 4)) {
- if (!encryption_required)
+ if (!IS_ENCRYPTED(inode))
inode->i_op = &ext4_symlink_inode_operations;
inode_nohighmem(inode);
ext4_set_aops(inode);
} else {
/* clear the extent format for fast symlink */
ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);
- if (!encryption_required) {
+ if (!IS_ENCRYPTED(inode)) {
inode->i_op = &ext4_fast_symlink_inode_operations;
inode->i_link = (char *)&EXT4_I(inode)->i_data;
}
if (handle)
ext4_journal_stop(handle);
- kfree(sd);
- return err;
+ goto out_free_encrypted_link;
+
err_drop_inode:
if (handle)
ext4_journal_stop(handle);
clear_nlink(inode);
unlock_new_inode(inode);
iput(inode);
- err_free_sd:
- kfree(sd);
+ out_free_encrypted_link:
+ if (disk_link.name != (unsigned char *)symname)
+ kfree(disk_link.name);
return err;
}
if (err)
return err;
- if ((ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) &&
- (!projid_eq(EXT4_I(dir)->i_projid,
- EXT4_I(old_dentry->d_inode)->i_projid)))
+ if ((ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) &&
+ (!projid_eq(EXT4_I(dir)->i_projid,
+ EXT4_I(old_dentry->d_inode)->i_projid)))
return -EXDEV;
err = dquot_initialize(dir);
ent->de->inode = cpu_to_le32(ino);
if (ext4_has_feature_filetype(ent->dir->i_sb))
ent->de->file_type = file_type;
- ent->dir->i_version++;
+ inode_inc_iversion(ent->dir);
ent->dir->i_ctime = ent->dir->i_mtime =
current_time(ent->dir);
ext4_mark_inode_dirty(handle, ent->dir);
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/fs/ext4/super.c
*
#include <linux/dax.h>
#include <linux/cleancache.h>
#include <linux/uaccess.h>
+#include <linux/iversion.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
}
ext4_unlock_group(sb, grp);
+ ext4_commit_super(sb, 1);
ext4_handle_error(sb);
/*
* We only get here in the ERRORS_RO case; relocking the group
ext4_unregister_li_request(sb);
ext4_quota_off_umount(sb);
- flush_workqueue(sbi->rsv_conversion_wq);
destroy_workqueue(sbi->rsv_conversion_wq);
if (sbi->s_journal) {
if (!ei)
return NULL;
- ei->vfs_inode.i_version = 1;
+ inode_set_iversion(&ei->vfs_inode, 1);
spin_lock_init(&ei->i_raw_lock);
INIT_LIST_HEAD(&ei->i_prealloc_list);
spin_lock_init(&ei->i_prealloc_lock);
static int __init init_inodecache(void)
{
- ext4_inode_cachep = kmem_cache_create("ext4_inode_cache",
- sizeof(struct ext4_inode_info),
- 0, (SLAB_RECLAIM_ACCOUNT|
- SLAB_MEM_SPREAD|SLAB_ACCOUNT),
- init_once);
+ ext4_inode_cachep = kmem_cache_create_usercopy("ext4_inode_cache",
+ sizeof(struct ext4_inode_info), 0,
+ (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|
+ SLAB_ACCOUNT),
+ offsetof(struct ext4_inode_info, i_data),
+ sizeof_field(struct ext4_inode_info, i_data),
+ init_once);
if (ext4_inode_cachep == NULL)
return -ENOMEM;
return 0;
jbd2_free_inode(EXT4_I(inode)->jinode);
EXT4_I(inode)->jinode = NULL;
}
- #ifdef CONFIG_EXT4_FS_ENCRYPTION
- fscrypt_put_encryption_info(inode, NULL);
- #endif
+ fscrypt_put_encryption_info(inode);
}
static struct inode *ext4_nfs_get_inode(struct super_block *sb,
* compensate.
*/
if (sb->s_blocksize == 1024 && nr == 0 &&
- le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block) == 0)
+ le32_to_cpu(sbi->s_es->s_first_data_block) == 0)
has_super++;
return (has_super + ext4_group_first_block_no(sb, bg));
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_li_request *elr = NULL;
- ext4_group_t ngroups = EXT4_SB(sb)->s_groups_count;
+ ext4_group_t ngroups = sbi->s_groups_count;
int ret = 0;
mutex_lock(&ext4_li_mtx);
bool needs_barrier = false;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- if (unlikely(ext4_forced_shutdown(EXT4_SB(sb))))
+ if (unlikely(ext4_forced_shutdown(sbi)))
return 0;
trace_ext4_sync_fs(sb, wait);
void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
{
+ if (is_inode_flag_set(inode, FI_NEW_INODE))
+ return;
+
if (f2fs_inode_dirtied(inode, sync))
return;
i_projid = F2FS_DEF_PROJID;
fi->i_projid = make_kprojid(&init_user_ns, i_projid);
+ if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi->sb) &&
+ F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
+ fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
+ fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
+ }
+
f2fs_put_page(node_page, 1);
stat_inc_inline_xattr(inode);
return inode;
}
-int update_inode(struct inode *inode, struct page *node_page)
+void update_inode(struct inode *inode, struct page *node_page)
{
struct f2fs_inode *ri;
struct extent_tree *et = F2FS_I(inode)->extent_tree;
- f2fs_inode_synced(inode);
-
f2fs_wait_on_page_writeback(node_page, NODE, true);
+ set_page_dirty(node_page);
+
+ f2fs_inode_synced(inode);
ri = F2FS_INODE(node_page);
F2FS_I(inode)->i_projid);
ri->i_projid = cpu_to_le32(i_projid);
}
+
+ if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)->sb) &&
+ F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
+ i_crtime)) {
+ ri->i_crtime =
+ cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
+ ri->i_crtime_nsec =
+ cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
+ }
}
__set_inode_rdev(inode, ri);
if (inode->i_nlink == 0)
clear_inline_node(node_page);
- return set_page_dirty(node_page);
}
-int update_inode_page(struct inode *inode)
+void update_inode_page(struct inode *inode)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct page *node_page;
- int ret = 0;
retry:
node_page = get_node_page(sbi, inode->i_ino);
if (IS_ERR(node_page)) {
} else if (err != -ENOENT) {
f2fs_stop_checkpoint(sbi, false);
}
- return 0;
+ return;
}
- ret = update_inode(inode, node_page);
+ update_inode(inode, node_page);
f2fs_put_page(node_page, 1);
- return ret;
}
int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
!exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
}
out_clear:
- fscrypt_put_encryption_info(inode, NULL);
+ fscrypt_put_encryption_info(inode);
clear_inode(inode);
}
inode->i_ino = ino;
inode->i_blocks = 0;
- inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+ inode->i_mtime = inode->i_atime = inode->i_ctime =
+ F2FS_I(inode)->i_crtime = current_time(inode);
inode->i_generation = sbi->s_next_generation++;
err = insert_inode_locked(inode);
if (err)
goto fail_drop;
+ set_inode_flag(inode, FI_NEW_INODE);
+
/* If the directory encrypted, then we should encrypt the inode. */
if (f2fs_encrypted_inode(dir) && f2fs_may_encrypt(inode))
f2fs_set_encrypted_inode(inode);
- set_inode_flag(inode, FI_NEW_INODE);
-
if (f2fs_sb_has_extra_attr(sbi->sb)) {
set_inode_flag(inode, FI_EXTRA_ATTR);
F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
- if (f2fs_encrypted_inode(dir) &&
- !fscrypt_has_permitted_context(dir, inode))
- return -EPERM;
+ err = fscrypt_prepare_link(old_dentry, dir, dentry);
+ if (err)
+ return err;
if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
(!projid_eq(F2FS_I(dir)->i_projid,
trace_f2fs_lookup_start(dir, dentry, flags);
- if (f2fs_encrypted_inode(dir)) {
- err = fscrypt_get_encryption_info(dir);
-
- /*
- * DCACHE_ENCRYPTED_WITH_KEY is set if the dentry is
- * created while the directory was encrypted and we
- * don't have access to the key.
- */
- if (fscrypt_has_encryption_key(dir))
- fscrypt_set_encrypted_dentry(dentry);
- fscrypt_set_d_op(dentry);
- if (err && err != -ENOKEY)
- goto out;
- }
+ err = fscrypt_prepare_lookup(dir, dentry, flags);
+ if (err)
+ goto out;
if (dentry->d_name.len > F2FS_NAME_LEN) {
err = -ENAMETOOLONG;
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
struct inode *inode;
size_t len = strlen(symname);
- struct fscrypt_str disk_link = FSTR_INIT((char *)symname, len + 1);
- struct fscrypt_symlink_data *sd = NULL;
+ struct fscrypt_str disk_link;
int err;
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
- if (f2fs_encrypted_inode(dir)) {
- err = fscrypt_get_encryption_info(dir);
- if (err)
- return err;
-
- if (!fscrypt_has_encryption_key(dir))
- return -ENOKEY;
-
- disk_link.len = (fscrypt_fname_encrypted_size(dir, len) +
- sizeof(struct fscrypt_symlink_data));
- }
-
- if (disk_link.len > dir->i_sb->s_blocksize)
- return -ENAMETOOLONG;
+ err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
+ &disk_link);
+ if (err)
+ return err;
err = dquot_initialize(dir);
if (err)
if (IS_ERR(inode))
return PTR_ERR(inode);
- if (f2fs_encrypted_inode(inode))
+ if (IS_ENCRYPTED(inode))
inode->i_op = &f2fs_encrypted_symlink_inode_operations;
else
inode->i_op = &f2fs_symlink_inode_operations;
f2fs_lock_op(sbi);
err = f2fs_add_link(dentry, inode);
if (err)
- goto out;
+ goto out_handle_failed_inode;
f2fs_unlock_op(sbi);
alloc_nid_done(sbi, inode->i_ino);
- if (f2fs_encrypted_inode(inode)) {
- struct qstr istr = QSTR_INIT(symname, len);
- struct fscrypt_str ostr;
-
- sd = f2fs_kzalloc(sbi, disk_link.len, GFP_NOFS);
- if (!sd) {
- err = -ENOMEM;
- goto err_out;
- }
-
- err = fscrypt_get_encryption_info(inode);
- if (err)
- goto err_out;
-
- if (!fscrypt_has_encryption_key(inode)) {
- err = -ENOKEY;
- goto err_out;
- }
-
- ostr.name = sd->encrypted_path;
- ostr.len = disk_link.len;
- err = fscrypt_fname_usr_to_disk(inode, &istr, &ostr);
- if (err)
- goto err_out;
-
- sd->len = cpu_to_le16(ostr.len);
- disk_link.name = (char *)sd;
- }
+ err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
+ if (err)
+ goto err_out;
err = page_symlink(inode, disk_link.name, disk_link.len);
f2fs_unlink(dir, dentry);
}
- kfree(sd);
-
f2fs_balance_fs(sbi, true);
- return err;
- out:
+ goto out_free_encrypted_link;
+
+ out_handle_failed_inode:
handle_failed_inode(inode);
+ out_free_encrypted_link:
+ if (disk_link.name != (unsigned char *)symname)
+ kfree(disk_link.name);
return err;
}
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
- if ((f2fs_encrypted_inode(old_dir) &&
- !fscrypt_has_encryption_key(old_dir)) ||
- (f2fs_encrypted_inode(new_dir) &&
- !fscrypt_has_encryption_key(new_dir)))
- return -ENOKEY;
-
- if ((old_dir != new_dir) && f2fs_encrypted_inode(new_dir) &&
- !fscrypt_has_permitted_context(new_dir, old_inode)) {
- err = -EPERM;
- goto out;
- }
-
if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
(!projid_eq(F2FS_I(new_dir)->i_projid,
F2FS_I(old_dentry->d_inode)->i_projid)))
}
f2fs_i_links_write(old_dir, false);
}
+ add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
f2fs_unlock_op(sbi);
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
- if ((f2fs_encrypted_inode(old_dir) &&
- !fscrypt_has_encryption_key(old_dir)) ||
- (f2fs_encrypted_inode(new_dir) &&
- !fscrypt_has_encryption_key(new_dir)))
- return -ENOKEY;
-
- if ((f2fs_encrypted_inode(old_dir) || f2fs_encrypted_inode(new_dir)) &&
- (old_dir != new_dir) &&
- (!fscrypt_has_permitted_context(new_dir, old_inode) ||
- !fscrypt_has_permitted_context(old_dir, new_inode)))
- return -EPERM;
-
if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
!projid_eq(F2FS_I(new_dir)->i_projid,
F2FS_I(old_dentry->d_inode)->i_projid)) ||
}
f2fs_mark_inode_dirty_sync(new_dir, false);
+ add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
+ add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
+
f2fs_unlock_op(sbi);
if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
{
+ int err;
+
if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
return -EINVAL;
+ err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
+ flags);
+ if (err)
+ return err;
+
if (flags & RENAME_EXCHANGE) {
return f2fs_cross_rename(old_dir, old_dentry,
new_dir, new_dentry);
struct inode *inode,
struct delayed_call *done)
{
- struct page *cpage = NULL;
- char *caddr, *paddr = NULL;
- struct fscrypt_str cstr = FSTR_INIT(NULL, 0);
- struct fscrypt_str pstr = FSTR_INIT(NULL, 0);
- struct fscrypt_symlink_data *sd;
- u32 max_size = inode->i_sb->s_blocksize;
- int res;
+ struct page *page;
+ const char *target;
if (!dentry)
return ERR_PTR(-ECHILD);
- res = fscrypt_get_encryption_info(inode);
- if (res)
- return ERR_PTR(res);
-
- cpage = read_mapping_page(inode->i_mapping, 0, NULL);
- if (IS_ERR(cpage))
- return ERR_CAST(cpage);
- caddr = page_address(cpage);
-
- /* Symlink is encrypted */
- sd = (struct fscrypt_symlink_data *)caddr;
- cstr.name = sd->encrypted_path;
- cstr.len = le16_to_cpu(sd->len);
-
- /* this is broken symlink case */
- if (unlikely(cstr.len == 0)) {
- res = -ENOENT;
- goto errout;
- }
-
- if ((cstr.len + sizeof(struct fscrypt_symlink_data) - 1) > max_size) {
- /* Symlink data on the disk is corrupted */
- res = -EIO;
- goto errout;
- }
- res = fscrypt_fname_alloc_buffer(inode, cstr.len, &pstr);
- if (res)
- goto errout;
-
- res = fscrypt_fname_disk_to_usr(inode, 0, 0, &cstr, &pstr);
- if (res)
- goto errout;
-
- /* this is broken symlink case */
- if (unlikely(pstr.name[0] == 0)) {
- res = -ENOENT;
- goto errout;
- }
-
- paddr = pstr.name;
-
- /* Null-terminate the name */
- paddr[pstr.len] = '\0';
+ page = read_mapping_page(inode->i_mapping, 0, NULL);
+ if (IS_ERR(page))
+ return ERR_CAST(page);
- put_page(cpage);
- set_delayed_call(done, kfree_link, paddr);
- return paddr;
- errout:
- fscrypt_fname_free_buffer(&pstr);
- put_page(cpage);
- return ERR_PTR(res);
+ target = fscrypt_get_symlink(inode, page_address(page),
+ inode->i_sb->s_blocksize, done);
+ put_page(page);
+ return target;
}
const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
dbg_gen("'%pd' in dir ino %lu", dentry, dir->i_ino);
- if (ubifs_crypt_is_encrypted(dir)) {
- err = fscrypt_get_encryption_info(dir);
-
- /*
- * DCACHE_ENCRYPTED_WITH_KEY is set if the dentry is
- * created while the directory was encrypted and we
- * have access to the key.
- */
- if (fscrypt_has_encryption_key(dir))
- fscrypt_set_encrypted_dentry(dentry);
- fscrypt_set_d_op(dentry);
- if (err && err != -ENOKEY)
- return ERR_PTR(err);
- }
+ err = fscrypt_prepare_lookup(dir, dentry, flags);
+ if (err)
+ return ERR_PTR(err);
err = fscrypt_setup_filename(dir, &dentry->d_name, 1, &nm);
if (err)
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;
+ err = fscrypt_prepare_link(old_dentry, dir, dentry);
+ if (err)
+ return err;
err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
if (err)
struct ubifs_info *c = dir->i_sb->s_fs_info;
int err, len = strlen(symname);
int sz_change = CALC_DENT_SIZE(len);
- struct fscrypt_str disk_link = FSTR_INIT((char *)symname, len + 1);
- struct fscrypt_symlink_data *sd = NULL;
+ struct fscrypt_str disk_link;
struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
.new_ino_d = ALIGN(len, 8),
.dirtied_ino = 1 };
struct fscrypt_name nm;
- 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;
- }
+ dbg_gen("dent '%pd', target '%s' in dir ino %lu", dentry,
+ symname, dir->i_ino);
- disk_link.len = (fscrypt_fname_encrypted_size(dir, len) +
- sizeof(struct fscrypt_symlink_data));
- }
+ err = fscrypt_prepare_symlink(dir, symname, len, UBIFS_MAX_INO_DATA,
+ &disk_link);
+ if (err)
+ return err;
/*
* Budget request settings: new inode, new direntry and changing parent
* directory inode.
*/
-
- dbg_gen("dent '%pd', target '%s' in dir ino %lu", dentry,
- symname, dir->i_ino);
-
- if (disk_link.len > UBIFS_MAX_INO_DATA)
- return -ENAMETOOLONG;
-
err = ubifs_budget_space(c, &req);
if (err)
return err;
goto out_inode;
}
- if (ubifs_crypt_is_encrypted(dir)) {
- struct qstr istr = QSTR_INIT(symname, len);
- struct fscrypt_str ostr;
-
- sd = kzalloc(disk_link.len, GFP_NOFS);
- if (!sd) {
- err = -ENOMEM;
- goto out_inode;
- }
-
- ostr.name = sd->encrypted_path;
- ostr.len = disk_link.len;
-
- err = fscrypt_fname_usr_to_disk(inode, &istr, &ostr);
- if (err) {
- kfree(sd);
+ if (IS_ENCRYPTED(inode)) {
+ disk_link.name = ui->data; /* encrypt directly into ui->data */
+ err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
+ if (err)
goto out_inode;
- }
-
- sd->len = cpu_to_le16(ostr.len);
- disk_link.name = (char *)sd;
} else {
+ memcpy(ui->data, disk_link.name, disk_link.len);
inode->i_link = ui->data;
}
- memcpy(ui->data, disk_link.name, disk_link.len);
- ((char *)ui->data)[disk_link.len - 1] = '\0';
-
/*
* The terminating zero byte is not written to the flash media and it
* is put just to make later in-memory string processing simpler. Thus,
- * data length is @len, not @len + %1.
+ * data length is @disk_link.len - 1, not @disk_link.len.
*/
ui->data_len = disk_link.len - 1;
inode->i_size = ubifs_inode(inode)->ui_size = disk_link.len - 1;
goto out_cancel;
mutex_unlock(&dir_ui->ui_mutex);
- ubifs_release_budget(c, &req);
insert_inode_hash(inode);
d_instantiate(dentry, inode);
- fscrypt_free_filename(&nm);
- return 0;
+ err = 0;
+ goto out_fname;
out_cancel:
dir->i_size -= sz_change;
if (unlink)
ubifs_assert(inode_is_locked(new_inode));
- if (old_dir != new_dir) {
- if (ubifs_crypt_is_encrypted(new_dir) &&
- !fscrypt_has_permitted_context(new_dir, old_inode))
- return -EPERM;
- }
-
if (unlink && is_dir) {
err = ubifs_check_dir_empty(new_inode);
if (err)
ubifs_assert(fst_inode && snd_inode);
- if ((ubifs_crypt_is_encrypted(old_dir) ||
- ubifs_crypt_is_encrypted(new_dir)) &&
- (old_dir != new_dir) &&
- (!fscrypt_has_permitted_context(new_dir, fst_inode) ||
- !fscrypt_has_permitted_context(old_dir, snd_inode)))
- return -EPERM;
-
err = fscrypt_setup_filename(old_dir, &old_dentry->d_name, 0, &fst_nm);
if (err)
return err;
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
{
+ int err;
+
if (flags & ~(RENAME_NOREPLACE | RENAME_WHITEOUT | RENAME_EXCHANGE))
return -EINVAL;
ubifs_assert(inode_is_locked(old_dir));
ubifs_assert(inode_is_locked(new_dir));
+ err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
+ flags);
+ if (err)
+ return err;
+
if (flags & RENAME_EXCHANGE)
return ubifs_xrename(old_dir, old_dentry, new_dir, new_dentry);
if (err)
return err;
- if (ubifs_crypt_is_encrypted(inode) && (attr->ia_valid & ATTR_SIZE)) {
- err = fscrypt_get_encryption_info(inode);
- if (err)
- return err;
- if (!fscrypt_has_encryption_key(inode))
- return -ENOKEY;
- }
+ err = fscrypt_prepare_setattr(dentry, attr);
+ if (err)
+ return err;
if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size < inode->i_size)
/* Truncation to a smaller size */
return 0;
}
-static int ubifs_file_open(struct inode *inode, struct file *filp)
-{
- int ret;
- struct dentry *dir;
- struct ubifs_info *c = inode->i_sb->s_fs_info;
-
- if (ubifs_crypt_is_encrypted(inode)) {
- ret = fscrypt_get_encryption_info(inode);
- if (ret)
- return -EACCES;
- if (!fscrypt_has_encryption_key(inode))
- return -ENOKEY;
- }
-
- dir = dget_parent(file_dentry(filp));
- if (ubifs_crypt_is_encrypted(d_inode(dir)) &&
- !fscrypt_has_permitted_context(d_inode(dir), inode)) {
- ubifs_err(c, "Inconsistent encryption contexts: %lu/%lu",
- (unsigned long) d_inode(dir)->i_ino,
- (unsigned long) inode->i_ino);
- dput(dir);
- ubifs_ro_mode(c, -EPERM);
- return -EPERM;
- }
- dput(dir);
-
- return 0;
-}
-
static const char *ubifs_get_link(struct dentry *dentry,
struct inode *inode,
struct delayed_call *done)
{
- int err;
- struct fscrypt_symlink_data *sd;
struct ubifs_inode *ui = ubifs_inode(inode);
- struct fscrypt_str cstr;
- struct fscrypt_str pstr;
- if (!ubifs_crypt_is_encrypted(inode))
+ if (!IS_ENCRYPTED(inode))
return ui->data;
if (!dentry)
return ERR_PTR(-ECHILD);
- err = fscrypt_get_encryption_info(inode);
- if (err)
- return ERR_PTR(err);
-
- sd = (struct fscrypt_symlink_data *)ui->data;
- cstr.name = sd->encrypted_path;
- cstr.len = le16_to_cpu(sd->len);
-
- if (cstr.len == 0)
- return ERR_PTR(-ENOENT);
-
- if ((cstr.len + sizeof(struct fscrypt_symlink_data) - 1) > ui->data_len)
- return ERR_PTR(-EIO);
-
- err = fscrypt_fname_alloc_buffer(inode, cstr.len, &pstr);
- if (err)
- return ERR_PTR(err);
-
- err = fscrypt_fname_disk_to_usr(inode, 0, 0, &cstr, &pstr);
- if (err) {
- fscrypt_fname_free_buffer(&pstr);
- return ERR_PTR(err);
- }
-
- pstr.name[pstr.len] = '\0';
-
- set_delayed_call(done, kfree_link, pstr.name);
- return pstr.name;
+ return fscrypt_get_symlink(inode, ui->data, ui->data_len, done);
}
-
const struct address_space_operations ubifs_file_address_operations = {
.readpage = ubifs_readpage,
.writepage = ubifs_writepage,
.unlocked_ioctl = ubifs_ioctl,
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
- .open = ubifs_file_open,
+ .open = fscrypt_file_open,
#ifdef CONFIG_COMPAT
.compat_ioctl = ubifs_compat_ioctl,
#endif
projects / linux.git / commitdiff