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https://git.openwrt.org/project/make_ext4fs.git
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46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#include <sys/types.h>
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#ifndef _SYSTEM_EXTRAS_EXT4_UTILS_XATTR_H
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#define _SYSTEM_EXTRAS_EXT4_UTILS_XATTR_H 1
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#define EXT4_XATTR_MAGIC 0xEA020000
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#define EXT4_XATTR_INDEX_SECURITY 6
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struct ext4_xattr_header {
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__le32 h_magic;
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__le32 h_refcount;
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__le32 h_blocks;
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__le32 h_hash;
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__le32 h_checksum;
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__u32 h_reserved[3];
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};
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struct ext4_xattr_ibody_header {
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__le32 h_magic;
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};
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struct ext4_xattr_entry {
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__u8 e_name_len;
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__u8 e_name_index;
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__le16 e_value_offs;
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__le32 e_value_block;
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__le32 e_value_size;
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__le32 e_hash;
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char e_name[0];
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};
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#define EXT4_XATTR_PAD_BITS 2
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#define EXT4_XATTR_PAD (1<<EXT4_XATTR_PAD_BITS)
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#define EXT4_XATTR_ROUND (EXT4_XATTR_PAD-1)
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#define EXT4_XATTR_LEN(name_len) \
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(((name_len) + EXT4_XATTR_ROUND + \
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sizeof(struct ext4_xattr_entry)) & ~EXT4_XATTR_ROUND)
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#define EXT4_XATTR_NEXT(entry) \
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((struct ext4_xattr_entry *)( \
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(char *)(entry) + EXT4_XATTR_LEN((entry)->e_name_len)))
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#define EXT4_XATTR_SIZE(size) \
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(((size) + EXT4_XATTR_ROUND) & ~EXT4_XATTR_ROUND)
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#define IS_LAST_ENTRY(entry) (*(uint32_t *)(entry) == 0)
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#endif /* !_SYSTEM_EXTRAS_EXT4_UTILS_XATTR_H */
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