Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *  linux/fs/sysv/file.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  minix/file.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *  Copyright (C) 1991, 1992  Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *  coh/file.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *  Copyright (C) 1993  Pascal Haible, Bruno Haible
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  *  sysv/file.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  *  Copyright (C) 1993  Bruno Haible
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  *  SystemV/Coherent regular file handling primitives
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "sysv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * We have mostly NULLs here: the current defaults are OK for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * the coh filesystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) const struct file_operations sysv_file_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	.llseek		= generic_file_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	.read_iter	= generic_file_read_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	.write_iter	= generic_file_write_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	.mmap		= generic_file_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	.fsync		= generic_file_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	.splice_read	= generic_file_splice_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static int sysv_setattr(struct dentry *dentry, struct iattr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	struct inode *inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	error = setattr_prepare(dentry, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	if ((attr->ia_valid & ATTR_SIZE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	    attr->ia_size != i_size_read(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		error = inode_newsize_ok(inode, attr->ia_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 			return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		truncate_setsize(inode, attr->ia_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		sysv_truncate(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	setattr_copy(inode, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	mark_inode_dirty(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) const struct inode_operations sysv_file_inode_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	.setattr	= sysv_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	.getattr	= sysv_getattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };