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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | File: linux/xattr_acl.h |
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| 3 | |||
| 4 | (extended attribute representation of access control lists) |
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| 5 | |||
| 6 | (C) 2000 Andreas Gruenbacher, <a.gruenbacher@computer.org> |
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| 7 | */ |
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| 8 | |||
| 9 | #ifndef _LINUX_XATTR_ACL_H |
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| 10 | #define _LINUX_XATTR_ACL_H |
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| 11 | |||
| 12 | #include <linux/posix_acl.h> |
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| 13 | |||
| 14 | #define XATTR_NAME_ACL_ACCESS "system.posix_acl_access" |
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| 15 | #define XATTR_NAME_ACL_DEFAULT "system.posix_acl_default" |
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| 16 | |||
| 17 | #define XATTR_ACL_VERSION 0x0002 |
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| 18 | |||
| 19 | typedef struct { |
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| 20 | __u16 e_tag; |
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| 21 | __u16 e_perm; |
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| 22 | __u32 e_id; |
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| 23 | } xattr_acl_entry; |
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| 24 | |||
| 25 | typedef struct { |
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| 26 | __u32 a_version; |
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| 27 | xattr_acl_entry a_entries[0]; |
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| 28 | } xattr_acl_header; |
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| 29 | |||
| 30 | static inline size_t xattr_acl_size(int count) |
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| 31 | { |
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| 32 | return sizeof(xattr_acl_header) + count * sizeof(xattr_acl_entry); |
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| 33 | } |
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| 34 | |||
| 35 | static inline int xattr_acl_count(size_t size) |
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| 36 | { |
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| 37 | if (size < sizeof(xattr_acl_header)) |
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| 38 | return -1; |
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| 39 | size -= sizeof(xattr_acl_header); |
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| 40 | if (size % sizeof(xattr_acl_entry)) |
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| 41 | return -1; |
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| 42 | return size / sizeof(xattr_acl_entry); |
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| 43 | } |
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| 44 | |||
| 45 | struct posix_acl * posix_acl_from_xattr(const void *value, size_t size); |
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| 46 | int posix_acl_to_xattr(const struct posix_acl *acl, void *buffer, size_t size); |
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| 47 | |||
| 48 | |||
| 49 | |||
| 50 | #endif /* _LINUX_XATTR_ACL_H */ |