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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/ext3/acl.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-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/ext3/acl.h')
-rw-r--r-- | fs/ext3/acl.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/fs/ext3/acl.h b/fs/ext3/acl.h new file mode 100644 index 000000000000..98af0c0d0ba9 --- /dev/null +++ b/fs/ext3/acl.h @@ -0,0 +1,84 @@ +/* + File: fs/ext3/acl.h + + (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org> +*/ + +#include <linux/xattr_acl.h> + +#define EXT3_ACL_VERSION 0x0001 + +typedef struct { + __le16 e_tag; + __le16 e_perm; + __le32 e_id; +} ext3_acl_entry; + +typedef struct { + __le16 e_tag; + __le16 e_perm; +} ext3_acl_entry_short; + +typedef struct { + __le32 a_version; +} ext3_acl_header; + +static inline size_t ext3_acl_size(int count) +{ + if (count <= 4) { + return sizeof(ext3_acl_header) + + count * sizeof(ext3_acl_entry_short); + } else { + return sizeof(ext3_acl_header) + + 4 * sizeof(ext3_acl_entry_short) + + (count - 4) * sizeof(ext3_acl_entry); + } +} + +static inline int ext3_acl_count(size_t size) +{ + ssize_t s; + size -= sizeof(ext3_acl_header); + s = size - 4 * sizeof(ext3_acl_entry_short); + if (s < 0) { + if (size % sizeof(ext3_acl_entry_short)) + return -1; + return size / sizeof(ext3_acl_entry_short); + } else { + if (s % sizeof(ext3_acl_entry)) + return -1; + return s / sizeof(ext3_acl_entry) + 4; + } +} + +#ifdef CONFIG_EXT3_FS_POSIX_ACL + +/* Value for inode->u.ext3_i.i_acl and inode->u.ext3_i.i_default_acl + if the ACL has not been cached */ +#define EXT3_ACL_NOT_CACHED ((void *)-1) + +/* acl.c */ +extern int ext3_permission (struct inode *, int, struct nameidata *); +extern int ext3_acl_chmod (struct inode *); +extern int ext3_init_acl (handle_t *, struct inode *, struct inode *); + +extern int init_ext3_acl(void); +extern void exit_ext3_acl(void); + +#else /* CONFIG_EXT3_FS_POSIX_ACL */ +#include <linux/sched.h> +#define ext3_permission NULL + +static inline int +ext3_acl_chmod(struct inode *inode) +{ + return 0; +} + +static inline int +ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) +{ + return 0; +} +#endif /* CONFIG_EXT3_FS_POSIX_ACL */ + |