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549c729771
Extend some inode methods with an additional user namespace argument. A filesystem that is aware of idmapped mounts will receive the user namespace the mount has been marked with. This can be used for additional permission checking and also to enable filesystems to translate between uids and gids if they need to. We have implemented all relevant helpers in earlier patches. As requested we simply extend the exisiting inode method instead of introducing new ones. This is a little more code churn but it's mostly mechanical and doesnt't leave us with additional inode methods. Link: https://lore.kernel.org/r/20210121131959.646623-25-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* file.h
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*
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* Function prototypes
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*
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* Copyright (C) 2002, 2004 Oracle. All rights reserved.
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*/
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#ifndef OCFS2_FILE_H
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#define OCFS2_FILE_H
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extern const struct file_operations ocfs2_fops;
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extern const struct file_operations ocfs2_dops;
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extern const struct file_operations ocfs2_fops_no_plocks;
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extern const struct file_operations ocfs2_dops_no_plocks;
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extern const struct inode_operations ocfs2_file_iops;
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extern const struct inode_operations ocfs2_special_file_iops;
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struct ocfs2_alloc_context;
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enum ocfs2_alloc_restarted;
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struct ocfs2_file_private {
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struct file *fp_file;
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struct mutex fp_mutex;
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struct ocfs2_lock_res fp_flock;
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};
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int ocfs2_add_inode_data(struct ocfs2_super *osb,
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struct inode *inode,
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u32 *logical_offset,
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u32 clusters_to_add,
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int mark_unwritten,
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struct buffer_head *fe_bh,
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handle_t *handle,
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struct ocfs2_alloc_context *data_ac,
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struct ocfs2_alloc_context *meta_ac,
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enum ocfs2_alloc_restarted *reason_ret);
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int ocfs2_set_inode_size(handle_t *handle,
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struct inode *inode,
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struct buffer_head *fe_bh,
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u64 new_i_size);
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int ocfs2_simple_size_update(struct inode *inode,
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struct buffer_head *di_bh,
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u64 new_i_size);
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int ocfs2_truncate_file(struct inode *inode,
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struct buffer_head *di_bh,
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u64 new_i_size);
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int ocfs2_extend_no_holes(struct inode *inode, struct buffer_head *di_bh,
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u64 new_i_size, u64 zero_to);
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int ocfs2_zero_extend(struct inode *inode, struct buffer_head *di_bh,
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loff_t zero_to);
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int ocfs2_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
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struct iattr *attr);
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int ocfs2_getattr(struct user_namespace *mnt_userns, const struct path *path,
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struct kstat *stat, u32 request_mask, unsigned int flags);
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int ocfs2_permission(struct user_namespace *mnt_userns,
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struct inode *inode,
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int mask);
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int ocfs2_should_update_atime(struct inode *inode,
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struct vfsmount *vfsmnt);
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int ocfs2_update_inode_atime(struct inode *inode,
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struct buffer_head *bh);
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int ocfs2_change_file_space(struct file *file, unsigned int cmd,
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struct ocfs2_space_resv *sr);
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int ocfs2_check_range_for_refcount(struct inode *inode, loff_t pos,
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size_t count);
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int ocfs2_remove_inode_range(struct inode *inode,
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struct buffer_head *di_bh, u64 byte_start,
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u64 byte_len);
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#endif /* OCFS2_FILE_H */
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