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41ae864b69
In P2ALIGN, the result would be incorrect when align is unsigned integer and x is larger than max value of the type of align. In that case, -(align) would be a positive integer, which means high bits would be zero and finally stay zero after '&' when align is converted to a larger integer type. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Youzhong Yang <yyang@mathworks.com> Signed-off-by: Qiuhao Chen <chenqiuhao1997@gmail.com> Closes #15940
194 lines
5.2 KiB
C
194 lines
5.2 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_CCOMPILE_H
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#define _SYS_CCOMPILE_H
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/*
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* This file contains definitions designed to enable different compilers
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* to be used harmoniously on Solaris systems.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(INVARIANTS) && !defined(ZFS_DEBUG)
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#define ZFS_DEBUG
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#undef NDEBUG
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#endif
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#define EXPORT_SYMBOL(x)
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#define module_param(a, b, c)
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#define module_param_call(a, b, c, d, e)
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#define module_param_named(a, b, c, d)
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#define MODULE_PARM_DESC(a, b)
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#define asm __asm
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#ifdef ZFS_DEBUG
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#undef NDEBUG
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#endif
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#if !defined(ZFS_DEBUG) && !defined(NDEBUG)
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#define NDEBUG
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#endif
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#ifndef EINTEGRITY
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#define EINTEGRITY 97 /* EINTEGRITY is new in 13 */
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#endif
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/*
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* These are bespoke errnos used in ZFS. We map them to their closest FreeBSD
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* equivalents. This gives us more useful error messages from strerror(3).
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*/
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#define ECKSUM EINTEGRITY
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#define EFRAGS ENOSPC
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/* Similar for ENOACTIVE */
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#define ENOTACTIVE ECANCELED
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#define EREMOTEIO EREMOTE
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#define ECHRNG ENXIO
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#define ETIME ETIMEDOUT
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#ifndef LOCORE
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#ifndef HAVE_RPC_TYPES
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#ifndef _KERNEL
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typedef int bool_t;
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typedef int enum_t;
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#endif
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#endif
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#endif
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#ifndef __cplusplus
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#define __init
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#define __exit
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#endif
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#if defined(_KERNEL) || defined(_STANDALONE)
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#define param_set_charp(a, b) (0)
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#define ATTR_UID AT_UID
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#define ATTR_GID AT_GID
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#define ATTR_MODE AT_MODE
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#define ATTR_XVATTR AT_XVATTR
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#define ATTR_CTIME AT_CTIME
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#define ATTR_MTIME AT_MTIME
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#define ATTR_ATIME AT_ATIME
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#if defined(_STANDALONE)
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#define vmem_free kmem_free
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#define vmem_zalloc kmem_zalloc
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#define vmem_alloc kmem_zalloc
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#else
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#define vmem_free zfs_kmem_free
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#define vmem_zalloc(size, flags) zfs_kmem_alloc(size, flags | M_ZERO)
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#define vmem_alloc zfs_kmem_alloc
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#endif
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#define MUTEX_NOLOCKDEP 0
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#define RW_NOLOCKDEP 0
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#else
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#define FALSE 0
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#define TRUE 1
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/*
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* XXX We really need to consolidate on standard
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* error codes in the common code
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*/
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#define ENOSTR ENOTCONN
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#define ENODATA EINVAL
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#define __BSD_VISIBLE 1
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#ifndef IN_BASE
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#define __POSIX_VISIBLE 201808
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#define __XSI_VISIBLE 1000
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#endif
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#define ARRAY_SIZE(a) (sizeof (a) / sizeof (a[0]))
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#define mmap64 mmap
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/* Note: this file can be used on linux/macOS when bootstrapping tools. */
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#if defined(__FreeBSD__)
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#define open64 open
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#define pwrite64 pwrite
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#define ftruncate64 ftruncate
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#define lseek64 lseek
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#define pread64 pread
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#define stat64 stat
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#define lstat64 lstat
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#define statfs64 statfs
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#define readdir64 readdir
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#define dirent64 dirent
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#endif
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// Deprecated. Use P2ALIGN_TYPED instead.
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// #define P2ALIGN(x, align) ((x) & -(align))
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#define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
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#define P2ROUNDUP(x, align) ((((x) - 1) | ((align) - 1)) + 1)
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#define P2PHASE(x, align) ((x) & ((align) - 1))
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#define P2NPHASE(x, align) (-(x) & ((align) - 1))
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#define ISP2(x) (((x) & ((x) - 1)) == 0)
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#define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
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#define P2BOUNDARY(off, len, align) \
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(((off) ^ ((off) + (len) - 1)) > (align) - 1)
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/*
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* Typed version of the P2* macros. These macros should be used to ensure
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* that the result is correctly calculated based on the data type of (x),
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* which is passed in as the last argument, regardless of the data
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* type of the alignment. For example, if (x) is of type uint64_t,
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* and we want to round it up to a page boundary using "PAGESIZE" as
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* the alignment, we can do either
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*
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* P2ROUNDUP(x, (uint64_t)PAGESIZE)
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* or
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* P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
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*/
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#define P2ALIGN_TYPED(x, align, type) \
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((type)(x) & -(type)(align))
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#define P2PHASE_TYPED(x, align, type) \
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((type)(x) & ((type)(align) - 1))
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#define P2NPHASE_TYPED(x, align, type) \
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(-(type)(x) & ((type)(align) - 1))
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#define P2ROUNDUP_TYPED(x, align, type) \
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((((type)(x) - 1) | ((type)(align) - 1)) + 1)
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#define P2END_TYPED(x, align, type) \
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(-(~(type)(x) & -(type)(align)))
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#define P2PHASEUP_TYPED(x, align, phase, type) \
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((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
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#define P2CROSS_TYPED(x, y, align, type) \
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(((type)(x) ^ (type)(y)) > (type)(align) - 1)
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#define P2SAMEHIGHBIT_TYPED(x, y, type) \
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(((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
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#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
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#define RLIM64_INFINITY RLIM_INFINITY
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#ifndef HAVE_ERESTART
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#define ERESTART EAGAIN
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#endif
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#define ABS(a) ((a) < 0 ? -(a) : (a))
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_CCOMPILE_H */
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