60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/*
|
|
* linux/fs/sysv/file.c
|
|
*
|
|
* minix/file.c
|
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
|
*
|
|
* coh/file.c
|
|
* Copyright (C) 1993 Pascal Haible, Bruno Haible
|
|
*
|
|
* sysv/file.c
|
|
* Copyright (C) 1993 Bruno Haible
|
|
*
|
|
* SystemV/Coherent regular file handling primitives
|
|
*/
|
|
|
|
#include "sysv.h"
|
|
|
|
/*
|
|
* We have mostly NULLs here: the current defaults are OK for
|
|
* the coh filesystem.
|
|
*/
|
|
const struct file_operations sysv_file_operations = {
|
|
.llseek = generic_file_llseek,
|
|
.read = new_sync_read,
|
|
.read_iter = generic_file_read_iter,
|
|
.write = new_sync_write,
|
|
.write_iter = generic_file_write_iter,
|
|
.mmap = generic_file_mmap,
|
|
.fsync = generic_file_fsync,
|
|
.splice_read = generic_file_splice_read,
|
|
};
|
|
|
|
static int sysv_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);
|
|
sysv_truncate(inode);
|
|
}
|
|
|
|
setattr_copy(inode, attr);
|
|
mark_inode_dirty(inode);
|
|
return 0;
|
|
}
|
|
|
|
const struct inode_operations sysv_file_inode_operations = {
|
|
.setattr = sysv_setattr,
|
|
.getattr = sysv_getattr,
|
|
};
|