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78 lines
1.8 KiB
78 lines
1.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#include <linux/init.h> |
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#include <linux/posix_acl.h> |
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#define REISERFS_ACL_VERSION 0x0001 |
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typedef struct { |
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__le16 e_tag; |
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__le16 e_perm; |
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__le32 e_id; |
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} reiserfs_acl_entry; |
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typedef struct { |
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__le16 e_tag; |
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__le16 e_perm; |
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} reiserfs_acl_entry_short; |
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typedef struct { |
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__le32 a_version; |
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} reiserfs_acl_header; |
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static inline size_t reiserfs_acl_size(int count) |
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{ |
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if (count <= 4) { |
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return sizeof(reiserfs_acl_header) + |
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count * sizeof(reiserfs_acl_entry_short); |
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} else { |
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return sizeof(reiserfs_acl_header) + |
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4 * sizeof(reiserfs_acl_entry_short) + |
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(count - 4) * sizeof(reiserfs_acl_entry); |
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} |
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} |
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static inline int reiserfs_acl_count(size_t size) |
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{ |
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ssize_t s; |
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size -= sizeof(reiserfs_acl_header); |
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s = size - 4 * sizeof(reiserfs_acl_entry_short); |
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if (s < 0) { |
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if (size % sizeof(reiserfs_acl_entry_short)) |
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return -1; |
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return size / sizeof(reiserfs_acl_entry_short); |
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} else { |
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if (s % sizeof(reiserfs_acl_entry)) |
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return -1; |
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return s / sizeof(reiserfs_acl_entry) + 4; |
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} |
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} |
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#ifdef CONFIG_REISERFS_FS_POSIX_ACL |
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struct posix_acl *reiserfs_get_acl(struct inode *inode, int type); |
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int reiserfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, |
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struct posix_acl *acl, int type); |
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int reiserfs_acl_chmod(struct inode *inode); |
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int reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, |
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struct inode *dir, struct dentry *dentry, |
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struct inode *inode); |
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int reiserfs_cache_default_acl(struct inode *dir); |
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#else |
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#define reiserfs_cache_default_acl(inode) 0 |
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#define reiserfs_get_acl NULL |
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#define reiserfs_set_acl NULL |
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static inline int reiserfs_acl_chmod(struct inode *inode) |
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{ |
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return 0; |
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} |
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static inline int |
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reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, |
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const struct inode *dir, struct dentry *dentry, |
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struct inode *inode) |
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{ |
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return 0; |
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} |
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#endif
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