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author | Dave Kleikamp <shaggy@austin.ibm.com> | 2006-10-11 01:20:50 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 11:14:15 -0700 |
commit | ac27a0ec112a089f1a5102bc8dffc79c8c815571 (patch) | |
tree | bcbcc0a5a88bf99b35119d9d9d660a37c503d787 /fs/ext4/acl.h | |
parent | 502717f4e112b18d9c37753a32f675bec9f2838b (diff) | |
download | blackbird-op-linux-ac27a0ec112a089f1a5102bc8dffc79c8c815571.tar.gz blackbird-op-linux-ac27a0ec112a089f1a5102bc8dffc79c8c815571.zip |
[PATCH] ext4: initial copy of files from ext3
Start of the ext4 patch series. See Documentation/filesystems/ext4.txt for
details.
This is a simple copy of the files in fs/ext3 to fs/ext4 and
/usr/incude/linux/ext3* to /usr/include/ex4*
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ext4/acl.h')
-rw-r--r-- | fs/ext4/acl.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/fs/ext4/acl.h b/fs/ext4/acl.h new file mode 100644 index 000000000000..0d1e6279cbfd --- /dev/null +++ b/fs/ext4/acl.h @@ -0,0 +1,81 @@ +/* + File: fs/ext3/acl.h + + (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org> +*/ + +#include <linux/posix_acl_xattr.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 *); + +#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 */ + |