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New attr userspace package - transition to the trusted namespace for XFS,
Add in the new attribute copying routines from Andreas, and also update
the license info in the syscall man pages so that other folks can use em
too.
New attr userspace package - transition to the trusted namespace for XFS,
Add in the new attribute copying routines from Andreas, and also update
the license info in the syscall man pages so that other folks can use em
too.

#ifndef __ERROR_CONTEXT_T
#define __ERROR_CONTEXT_T

#ifdef __cplusplus
extern "C" {
#endif

struct error_context {
	/* Process an error message */
	void (*error) (struct error_context *, const char *, ...);

	/* Quote a file name for including in an error message */
	const char *(*quote) (struct error_context *, const char *);

	/* Free a quoted name */
	void (*quote_free) (struct error_context *, const char *);
};

#ifdef ERROR_CONTEXT_MACROS
# define error(ctx, args...) do { \
	if ((ctx) && (ctx)->error) \
		(ctx)->error((ctx), args); \
	} while(0)
# define quote(ctx, name) \
	( ((ctx) && (ctx)->quote) ? (ctx)->quote((ctx), (name)) : (name) )
# define quote_free(ctx, name) do { \
	if ((ctx) && (ctx)->quote) \
		(ctx)->quote_free((ctx), (name)); \
	} while(0)
#endif

#ifdef __cplusplus
}
#endif

#endif  /* __ERROR_CONTEXT_T */