mirror of https://gitee.com/openkylin/qemu.git
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/*
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* memfd.c
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*
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* Copyright (c) 2015 Red Hat, Inc.
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*
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* QEMU library functions on POSIX which are shared between QEMU and
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* the QEMU tools.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu/memfd.h"
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#ifdef CONFIG_MEMFD
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#include <sys/memfd.h>
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#elif defined CONFIG_LINUX
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#include <sys/syscall.h>
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#include <asm/unistd.h>
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inline static int memfd_create(const char *name, unsigned int flags)
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{
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#ifdef __NR_memfd_create
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return syscall(__NR_memfd_create, name, flags);
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#else
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return -1;
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#endif
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}
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#endif
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#ifndef MFD_CLOEXEC
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#define MFD_CLOEXEC 0x0001U
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#endif
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#ifndef MFD_ALLOW_SEALING
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#define MFD_ALLOW_SEALING 0x0002U
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#endif
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