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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/include/linux/xattr.h
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@@ -15,6 +15,7 @@
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 #include <linux/slab.h>
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 #include <linux/types.h>
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 #include <linux/spinlock.h>
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+#include <linux/mm.h>
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 #include <uapi/linux/xattr.h>
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 struct inode;
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@@ -32,10 +33,7 @@
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 	bool (*list)(struct dentry *dentry);
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 	int (*get)(const struct xattr_handler *handler, struct dentry *dentry,
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 		   struct inode *inode, const char *name, void *buffer,
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-		   size_t size);
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-	int (*__get)(const struct xattr_handler *handler, struct dentry *dentry,
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-		     struct inode *inode, const char *name, void *buffer,
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-		     size_t size);
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+		   size_t size, int flags);
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 	int (*set)(const struct xattr_handler *handler, struct dentry *dentry,
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 		   struct inode *inode, const char *name, const void *buffer,
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 		   size_t size, int flags);
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@@ -49,7 +47,8 @@
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 	size_t value_len;
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 };
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-ssize_t __vfs_getxattr(struct dentry *, struct inode *, const char *, void *, size_t);
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+ssize_t __vfs_getxattr(struct dentry *dentry, struct inode *inode,
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+		       const char *name, void *buffer, size_t size, int flags);
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 ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
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 ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
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 int __vfs_setxattr(struct dentry *, struct inode *, const char *, const void *, size_t, int);
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@@ -63,6 +62,8 @@
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 ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
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 ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name,
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 			   char **xattr_value, size_t size, gfp_t flags);
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+
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+int xattr_supported_namespace(struct inode *inode, const char *prefix);
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 static inline const char *xattr_prefix(const struct xattr_handler *handler)
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 {
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@@ -78,7 +79,7 @@
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 	struct list_head list;
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 	char *name;
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 	size_t size;
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-	char value[0];
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+	char value[];
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 };
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 /*
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@@ -99,7 +100,7 @@
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 	list_for_each_entry_safe(xattr, node, &xattrs->head, list) {
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 		kfree(xattr->name);
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-		kfree(xattr);
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+		kvfree(xattr);
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 	}
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 }
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@@ -107,7 +108,8 @@
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 int simple_xattr_get(struct simple_xattrs *xattrs, const char *name,
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 		     void *buffer, size_t size);
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 int simple_xattr_set(struct simple_xattrs *xattrs, const char *name,
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-		     const void *value, size_t size, int flags);
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+		     const void *value, size_t size, int flags,
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+		     ssize_t *removed_size);
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 ssize_t simple_xattr_list(struct inode *inode, struct simple_xattrs *xattrs, char *buffer,
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 			  size_t size);
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 void simple_xattr_list_add(struct simple_xattrs *xattrs,