diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/err.h')
-rw-r--r-- | sys/compat/linuxkpi/common/include/linux/err.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/err.h b/sys/compat/linuxkpi/common/include/linux/err.h new file mode 100644 index 0000000..2366130 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/err.h @@ -0,0 +1,79 @@ +/*- + * Copyright (c) 2010 Isilon Systems, Inc. + * Copyright (c) 2010 iX Systems, Inc. + * Copyright (c) 2010 Panasas, Inc. + * Copyright (c) 2013-2015 Mellanox Technologies, Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ +#ifndef _LINUX_ERR_H_ +#define _LINUX_ERR_H_ + +#define MAX_ERRNO 4095 + +#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO) + +static inline void * +ERR_PTR(long error) +{ + return (void *)error; +} + +static inline long +PTR_ERR(const void *ptr) +{ + return (long)ptr; +} + +static inline long +IS_ERR(const void *ptr) +{ + return IS_ERR_VALUE((unsigned long)ptr); +} + +static inline long +IS_ERR_OR_NULL(const void *ptr) +{ + return !ptr || IS_ERR_VALUE((unsigned long)ptr); +} + +static inline void * +ERR_CAST(void *ptr) +{ + return (void *)ptr; +} + +static inline int +PTR_ERR_OR_ZERO(const void *ptr) +{ + if (IS_ERR(ptr)) + return PTR_ERR(ptr); + else + return 0; +} + +#define PTR_RET(p) PTR_ERR_OR_ZERO(p) + +#endif /* _LINUX_ERR_H_ */ |