52 строки
1.1 KiB
C
52 строки
1.1 KiB
C
/*
|
|
* 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 dentry *dentry, struct iattr *attr)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
int error;
|
|
|
|
error = inode_change_ok(inode, 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(inode, attr);
|
|
mark_inode_dirty(inode);
|
|
return 0;
|
|
}
|
|
|
|
const struct inode_operations minix_file_inode_operations = {
|
|
.setattr = minix_setattr,
|
|
.getattr = minix_getattr,
|
|
};
|