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// SPDX-License-Identifier: GPL-2.0
/*
* linux/fs/minix/file.c
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* minix regular file handling primitives
*/
#include "minix.h"
/*
* We have mostly NULLs here: the current defaults are OK for
* the minix filesystem.
*/
const struct file_operations minix_file_operations = {
.llseek = generic_file_llseek,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.fsync = generic_file_fsync,
.splice_read = generic_file_splice_read,
};
static int minix_setattr(struct user_namespace *mnt_userns,
struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = d_inode(dentry);
int error;
error = setattr_prepare(&init_user_ns, dentry, attr);
if (error)
return error;
if ((attr->ia_valid & ATTR_SIZE) &&
attr->ia_size != i_size_read(inode)) {
error = inode_newsize_ok(inode, attr->ia_size);
if (error)
return error;
truncate_setsize(inode, attr->ia_size);
minix_truncate(inode);
}
setattr_copy(&init_user_ns, inode, attr);
mark_inode_dirty(inode);
return 0;
}
const struct inode_operations minix_file_inode_operations = {
.setattr = minix_setattr,
.getattr = minix_getattr,
};
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