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https://github.com/xen-project/xen.git
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Keir Fraser
8f96998338
This adds fixes to the stub domain build into compiling Ian Jackson's qemu-xen. The most notable change is that mini-os headers now #include each other through a mini-os/ prefix, so that we can turn all -I into -isystem and still be sure that we include Mini-OS headers (and not qemu's console.h or blktaplib's list.h for instance...). Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
32 lines
638 B
C
32 lines
638 B
C
#ifndef _ERR_H
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#define _ERR_H
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#include <mini-os/errno.h>
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/*
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* Kernel pointers have redundant information, so we can use a
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* scheme where we can return either an error code or a dentry
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* pointer with the same return value.
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*
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* This should be a per-architecture thing, to allow different
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* error and pointer decisions.
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*/
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#define IS_ERR_VALUE(x) ((x) > (unsigned long)-1000L)
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static inline void *ERR_PTR(long error)
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{
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return (void *) error;
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}
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static inline long PTR_ERR(const void *ptr)
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{
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return (long) ptr;
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}
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static inline long IS_ERR(const void *ptr)
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{
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return IS_ERR_VALUE((unsigned long)ptr);
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}
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#endif /* _LINUX_ERR_H */
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