diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/ext2/acl.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/ext2/acl.h')
-rw-r--r-- | fs/ext2/acl.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/fs/ext2/acl.h b/fs/ext2/acl.h new file mode 100644 index 000000000000..fed96ae81a7d --- /dev/null +++ b/fs/ext2/acl.h | |||
@@ -0,0 +1,82 @@ | |||
1 | /* | ||
2 | File: fs/ext2/acl.h | ||
3 | |||
4 | (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org> | ||
5 | */ | ||
6 | |||
7 | #include <linux/xattr_acl.h> | ||
8 | |||
9 | #define EXT2_ACL_VERSION 0x0001 | ||
10 | |||
11 | typedef struct { | ||
12 | __le16 e_tag; | ||
13 | __le16 e_perm; | ||
14 | __le32 e_id; | ||
15 | } ext2_acl_entry; | ||
16 | |||
17 | typedef struct { | ||
18 | __le16 e_tag; | ||
19 | __le16 e_perm; | ||
20 | } ext2_acl_entry_short; | ||
21 | |||
22 | typedef struct { | ||
23 | __le32 a_version; | ||
24 | } ext2_acl_header; | ||
25 | |||
26 | static inline size_t ext2_acl_size(int count) | ||
27 | { | ||
28 | if (count <= 4) { | ||
29 | return sizeof(ext2_acl_header) + | ||
30 | count * sizeof(ext2_acl_entry_short); | ||
31 | } else { | ||
32 | return sizeof(ext2_acl_header) + | ||
33 | 4 * sizeof(ext2_acl_entry_short) + | ||
34 | (count - 4) * sizeof(ext2_acl_entry); | ||
35 | } | ||
36 | } | ||
37 | |||
38 | static inline int ext2_acl_count(size_t size) | ||
39 | { | ||
40 | ssize_t s; | ||
41 | size -= sizeof(ext2_acl_header); | ||
42 | s = size - 4 * sizeof(ext2_acl_entry_short); | ||
43 | if (s < 0) { | ||
44 | if (size % sizeof(ext2_acl_entry_short)) | ||
45 | return -1; | ||
46 | return size / sizeof(ext2_acl_entry_short); | ||
47 | } else { | ||
48 | if (s % sizeof(ext2_acl_entry)) | ||
49 | return -1; | ||
50 | return s / sizeof(ext2_acl_entry) + 4; | ||
51 | } | ||
52 | } | ||
53 | |||
54 | #ifdef CONFIG_EXT2_FS_POSIX_ACL | ||
55 | |||
56 | /* Value for inode->u.ext2_i.i_acl and inode->u.ext2_i.i_default_acl | ||
57 | if the ACL has not been cached */ | ||
58 | #define EXT2_ACL_NOT_CACHED ((void *)-1) | ||
59 | |||
60 | /* acl.c */ | ||
61 | extern int ext2_permission (struct inode *, int, struct nameidata *); | ||
62 | extern int ext2_acl_chmod (struct inode *); | ||
63 | extern int ext2_init_acl (struct inode *, struct inode *); | ||
64 | |||
65 | #else | ||
66 | #include <linux/sched.h> | ||
67 | #define ext2_permission NULL | ||
68 | #define ext2_get_acl NULL | ||
69 | #define ext2_set_acl NULL | ||
70 | |||
71 | static inline int | ||
72 | ext2_acl_chmod (struct inode *inode) | ||
73 | { | ||
74 | return 0; | ||
75 | } | ||
76 | |||
77 | static inline int ext2_init_acl (struct inode *inode, struct inode *dir) | ||
78 | { | ||
79 | return 0; | ||
80 | } | ||
81 | #endif | ||
82 | |||