mirror of
https://github.com/clearlinux/graphene.git
synced 2026-08-23 07:15:50 +00:00
Paweł Marczewski
883ae10de1
* Make sure "stat.h" and "perm.h" are directly included where necessary. * Don't include "perm.h" inside "stat.h" but require it to be included separately. * Remove workarounds with __KERNEL__, __GLIBC__, defining pid_t directly, and reversed include order (system headers before local ones).
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* SPDX-License-Identifier: LGPL-3.0-or-later */
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/* Copyright (C) 2020 Invisible Things Lab
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* Michał Kowalczyk <mkow@invisiblethingslab.com>
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*/
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/*
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* This file defines conversions between various PAL API flags and the flags used by Linux syscalls.
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*
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* The counterpart of this file is shim_flag_conv.h in LibOS.
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*/
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#ifndef PAL_FLAGS_CONV_H
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#define PAL_FLAGS_CONV_H
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#include <asm/fcntl.h>
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#include <linux/mman.h>
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#include <sys/types.h>
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#include "assert.h"
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#include "pal.h"
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static inline int PAL_MEM_FLAGS_TO_LINUX(int alloc_type, int prot) {
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assert(WITHIN_MASK(alloc_type, PAL_ALLOC_MASK));
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assert(WITHIN_MASK(prot, PAL_PROT_MASK));
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return (alloc_type & PAL_ALLOC_RESERVE ? MAP_NORESERVE | MAP_UNINITIALIZED : 0) |
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(prot & PAL_PROT_WRITECOPY ? MAP_PRIVATE : MAP_SHARED);
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}
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static inline int PAL_PROT_TO_LINUX(int prot) {
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assert(WITHIN_MASK(prot, PAL_PROT_MASK));
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return (prot & PAL_PROT_READ ? PROT_READ : 0) |
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(prot & PAL_PROT_WRITE ? PROT_WRITE : 0) |
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(prot & PAL_PROT_EXEC ? PROT_EXEC : 0);
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}
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static inline int PAL_ACCESS_TO_LINUX_OPEN(int access) {
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assert(WITHIN_MASK(access, PAL_ACCESS_MASK));
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return (access & PAL_ACCESS_RDONLY ? O_RDONLY : 0) |
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(access & PAL_ACCESS_WRONLY ? O_WRONLY : 0) |
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(access & PAL_ACCESS_RDWR ? O_RDWR : 0) |
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(access & PAL_ACCESS_APPEND ? O_APPEND : 0);
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}
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static inline int PAL_CREATE_TO_LINUX_OPEN(int create) {
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assert(create == 0 || create == PAL_CREATE_TRY || create == PAL_CREATE_ALWAYS);
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return (create & PAL_CREATE_TRY ? O_CREAT : 0) |
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(create & PAL_CREATE_ALWAYS ? O_CREAT | O_EXCL : 0);
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}
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static inline int PAL_OPTION_TO_LINUX_OPEN(int options) {
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assert(WITHIN_MASK(options, PAL_OPTION_CLOEXEC | PAL_OPTION_NONBLOCK));
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return (options & PAL_OPTION_CLOEXEC ? O_CLOEXEC : 0) |
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(options & PAL_OPTION_NONBLOCK ? O_NONBLOCK : 0);
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}
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#endif /* PAL_FLAGS_CONV_H */
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