return 0;
}
-int jffs2_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
+int jffs2_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
struct iattr *iattr)
{
struct inode *inode = d_inode(dentry);
int rc;
- rc = setattr_prepare(&init_user_ns, dentry, iattr);
+ rc = setattr_prepare(&nop_mnt_idmap, dentry, iattr);
if (rc)
return rc;
rc = jffs2_do_setattr(inode, iattr);
if (!rc && (iattr->ia_valid & ATTR_MODE))
- rc = posix_acl_chmod(&init_user_ns, dentry, inode->i_mode);
+ rc = posix_acl_chmod(&nop_mnt_idmap, dentry, inode->i_mode);
return rc;
}
/* We stop if it was running, then restart if it needs to.
This also catches the case where it was stopped and this
is just a remount to restart it.
- Flush the writebuffer, if neccecary, else we loose it */
+ Flush the writebuffer, if necessary, else we loose it */
if (!sb_rdonly(sb)) {
jffs2_stop_garbage_collect_thread(c);
mutex_lock(&c->alloc_sem);
*/
inode->i_flags |= S_NOCMTIME;
- inode_init_owner(&init_user_ns, inode, dir, mode);
+ inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
inode->i_mtime = inode->i_atime = inode->i_ctime =
current_time(inode);
inode->i_mapping->nrpages = 0;
return fscrypt_setup_filename(dir, &dentry->d_name, 0, nm);
}
-static int ubifs_create(struct user_namespace *mnt_userns, struct inode *dir,
+static int ubifs_create(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode, bool excl)
{
struct inode *inode;
mutex_unlock(&ubifs_inode(inode1)->ui_mutex);
}
-static int ubifs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int ubifs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
struct file *file, umode_t mode)
{
struct dentry *dentry = file->f_path.dentry;
return err;
}
-static int ubifs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
+static int ubifs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode)
{
struct inode *inode;
return err;
}
-static int ubifs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
+static int ubifs_mknod(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode, dev_t rdev)
{
struct inode *inode;
return err;
}
-static int ubifs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
+static int ubifs_symlink(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, const char *symname)
{
struct inode *inode;
int err, sz_change, len = strlen(symname);
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;
* Budget request settings: new inode, new direntry and changing parent
* directory inode.
*/
+ req.new_ino_d = ALIGN(disk_link.len - 1, 8);
err = ubifs_budget_space(c, &req);
if (err)
return err;
if (unlink) {
ubifs_assert(c, inode_is_locked(new_inode));
+ /* Budget for old inode's data when its nlink > 1. */
+ req.dirtied_ino_d = ALIGN(ubifs_inode(new_inode)->data_len, 8);
err = ubifs_purge_xattrs(new_inode);
if (err)
return err;
ubifs_assert(c, fst_inode && snd_inode);
+ /*
+ * Budget request settings: changing two direntries, changing the two
+ * parent directory inodes.
+ */
+
+ dbg_gen("dent '%pd' ino %lu in dir ino %lu exchange dent '%pd' ino %lu in dir ino %lu",
+ old_dentry, fst_inode->i_ino, old_dir->i_ino,
+ new_dentry, snd_inode->i_ino, new_dir->i_ino);
+
err = fscrypt_setup_filename(old_dir, &old_dentry->d_name, 0, &fst_nm);
if (err)
return err;
return err;
}
+ err = ubifs_budget_space(c, &req);
+ if (err)
+ goto out;
+
lock_4_inodes(old_dir, new_dir, NULL, NULL);
time = current_time(old_dir);
unlock_4_inodes(old_dir, new_dir, NULL, NULL);
ubifs_release_budget(c, &req);
+ out:
fscrypt_free_filename(&fst_nm);
fscrypt_free_filename(&snd_nm);
return err;
}
-static int ubifs_rename(struct user_namespace *mnt_userns,
+static int ubifs_rename(struct mnt_idmap *idmap,
struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
return do_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
}
-int ubifs_getattr(struct user_namespace *mnt_userns, const struct path *path,
+int ubifs_getattr(struct mnt_idmap *idmap, const struct path *path,
struct kstat *stat, u32 request_mask, unsigned int flags)
{
loff_t size;
STATX_ATTR_ENCRYPTED |
STATX_ATTR_IMMUTABLE);
- generic_fillattr(&init_user_ns, inode, stat);
+ generic_fillattr(&nop_mnt_idmap, inode, stat);
stat->blksize = UBIFS_BLOCK_SIZE;
stat->size = ui->ui_size;
if (page->index >= synced_i_size >> PAGE_SHIFT) {
err = inode->i_sb->s_op->write_inode(inode, NULL);
if (err)
- goto out_unlock;
+ goto out_redirty;
/*
* The inode has been written, but the write-buffer has
* not been synchronized, so in case of an unclean
if (i_size > synced_i_size) {
err = inode->i_sb->s_op->write_inode(inode, NULL);
if (err)
- goto out_unlock;
+ goto out_redirty;
}
return do_writepage(page, len);
-
+ out_redirty:
+ /*
+ * redirty_page_for_writepage() won't call ubifs_dirty_inode() because
+ * it passes I_DIRTY_PAGES flag while calling __mark_inode_dirty(), so
+ * there is no need to do space budget for dirty inode.
+ */
+ redirty_page_for_writepage(wbc, page);
out_unlock:
unlock_page(page);
return err;
return err;
}
-int ubifs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
+int ubifs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
struct iattr *attr)
{
int err;
dbg_gen("ino %lu, mode %#x, ia_valid %#x",
inode->i_ino, inode->i_mode, attr->ia_valid);
- err = setattr_prepare(&init_user_ns, dentry, attr);
+ err = setattr_prepare(&nop_mnt_idmap, dentry, attr);
if (err)
return err;
struct inode *inode = folio->mapping->host;
struct ubifs_info *c = inode->i_sb->s_fs_info;
- /*
- * An attempt to release a dirty page without budgeting for it - should
- * not happen.
- */
if (folio_test_writeback(folio))
return false;
+
+ /*
+ * Page is private but not dirty, weird? There is one condition
+ * making it happened. ubifs_writepage skipped the page because
+ * page index beyonds isize (for example. truncated by other
+ * process named A), then the page is invalidated by fadvise64
+ * syscall before being truncated by process A.
+ */
ubifs_assert(c, folio_test_private(folio));
- ubifs_assert(c, 0);
+ if (folio_test_checked(folio))
+ release_new_page_budget(c);
+ else
+ release_existing_page_budget(c);
+
+ atomic_long_dec(&c->dirty_pg_cnt);
folio_detach_private(folio);
folio_clear_checked(folio);
return true;
return fscrypt_get_symlink(inode, ui->data, ui->data_len, done);
}
-static int ubifs_symlink_getattr(struct user_namespace *mnt_userns,
+static int ubifs_symlink_getattr(struct mnt_idmap *idmap,
const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int query_flags)
{
- ubifs_getattr(mnt_userns, path, stat, request_mask, query_flags);
+ ubifs_getattr(idmap, path, stat, request_mask, query_flags);
if (IS_ENCRYPTED(d_inode(path->dentry)))
return fscrypt_symlink_getattr(path, stat);
return crypto_memneq(expected, got, c->hmac_desc_len);
}
+ #ifdef CONFIG_UBIFS_FS_AUTHENTICATION
void ubifs_bad_hash(const struct ubifs_info *c, const void *node,
const u8 *hash, int lnum, int offs);
+ #else
+ static inline void ubifs_bad_hash(const struct ubifs_info *c, const void *node,
+ const u8 *hash, int lnum, int offs) {};
+ #endif
int __ubifs_node_check_hash(const struct ubifs_info *c, const void *buf,
const u8 *expected);
/* file.c */
int ubifs_fsync(struct file *file, loff_t start, loff_t end, int datasync);
-int ubifs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
+int ubifs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
struct iattr *attr);
int ubifs_update_time(struct inode *inode, struct timespec64 *time, int flags);
/* dir.c */
struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
umode_t mode, bool is_xattr);
-int ubifs_getattr(struct user_namespace *mnt_userns, const struct path *path, struct kstat *stat,
- u32 request_mask, unsigned int flags);
+int ubifs_getattr(struct mnt_idmap *idmap, const struct path *path,
+ struct kstat *stat, u32 request_mask, unsigned int flags);
int ubifs_check_dir_empty(struct inode *dir);
/* xattr.c */
/* ioctl.c */
int ubifs_fileattr_get(struct dentry *dentry, struct fileattr *fa);
-int ubifs_fileattr_set(struct user_namespace *mnt_userns,
+int ubifs_fileattr_set(struct mnt_idmap *idmap,
struct dentry *dentry, struct fileattr *fa);
long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
void ubifs_set_inode_flags(struct inode *inode);
projects / linux-2.6-block.git / commitdiff