enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/fs/ext4/xattr.h
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@@ -48,7 +48,7 @@
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 	__le32	e_value_inum;	/* inode in which the value is stored */
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 	__le32	e_value_size;	/* size of attribute value */
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 	__le32	e_hash;		/* hash value of name and value */
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-	char	e_name[0];	/* attribute name */
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+	char	e_name[];	/* attribute name */
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 };
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 #define EXT4_XATTR_PAD_BITS		2
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@@ -95,6 +95,19 @@
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 #define EXT4_ZERO_XATTR_VALUE ((void *)-1)
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+/*
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+ * If we want to add an xattr to the inode, we should make sure that
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+ * i_extra_isize is not 0 and that the inode size is not less than
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+ * EXT4_GOOD_OLD_INODE_SIZE + extra_isize + pad.
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+ *   EXT4_GOOD_OLD_INODE_SIZE   extra_isize header   entry   pad  data
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+ * |--------------------------|------------|------|---------|---|-------|
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+ */
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+#define EXT4_INODE_HAS_XATTR_SPACE(inode)				\
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+	((EXT4_I(inode)->i_extra_isize != 0) &&				\
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+	 (EXT4_GOOD_OLD_INODE_SIZE + EXT4_I(inode)->i_extra_isize +	\
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+	  sizeof(struct ext4_xattr_ibody_header) + EXT4_XATTR_PAD <=	\
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+	  EXT4_INODE_SIZE((inode)->i_sb)))
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+
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 struct ext4_xattr_info {
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 	const char *name;
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 	const void *value;
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@@ -118,12 +131,13 @@
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 struct ext4_xattr_inode_array {
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 	unsigned int count;		/* # of used items in the array */
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-	struct inode *inodes[0];
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+	struct inode *inodes[];
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 };
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 extern const struct xattr_handler ext4_xattr_user_handler;
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 extern const struct xattr_handler ext4_xattr_trusted_handler;
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 extern const struct xattr_handler ext4_xattr_security_handler;
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+extern const struct xattr_handler ext4_xattr_hurd_handler;
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 #define EXT4_XATTR_NAME_ENCRYPTION_CONTEXT "c"
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