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