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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 = do_sync_read, |
18 | .aio_read = generic_file_aio_read, |
19 | .write = do_sync_write, |
20 | .aio_write = generic_file_aio_write, |
21 | .mmap = generic_file_mmap, |
22 | .fsync = generic_file_fsync, |
23 | .splice_read = generic_file_splice_read, |
24 | }; |
25 | |
26 | static int minix_setattr(struct dentry *dentry, struct iattr *attr) |
27 | { |
28 | struct inode *inode = dentry->d_inode; |
29 | int error; |
30 | |
31 | error = inode_change_ok(inode, attr); |
32 | if (error) |
33 | return error; |
34 | |
35 | if ((attr->ia_valid & ATTR_SIZE) && |
36 | attr->ia_size != i_size_read(inode)) { |
37 | error = vmtruncate(inode, attr->ia_size); |
38 | if (error) |
39 | return error; |
40 | } |
41 | |
42 | setattr_copy(inode, attr); |
43 | mark_inode_dirty(inode); |
44 | return 0; |
45 | } |
46 | |
47 | const struct inode_operations minix_file_inode_operations = { |
48 | .truncate = minix_truncate, |
49 | .setattr = minix_setattr, |
50 | .getattr = minix_getattr, |
51 | }; |
52 |
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