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