145ddba8be
This effectively mirrors our libc implementation, but with minor fudging -- name needs to be copied in from userspace, so we just copy it straight into stack-allocated memfd_name into the correct position rather than allocating memory that needs to be cleaned up. The sealing-related fcntl(2) commands, F_GET_SEALS and F_ADD_SEALS, have also been implemented now that we support them. Note that this implementation is still not quite at feature parity w.r.t. the actual Linux version; some caveats, from my foggy memory: - Need to implement SHM_GROW_ON_WRITE, default for memfd (in progress) - LTP wants the memfd name exposed to fdescfs - Linux allows open() of an fdescfs fd with O_TRUNC to truncate after dup. (?) Interested parties can install and run LTP from ports (devel/linux-ltp) to confirm any fixes. PR: 240874 Reviewed by: kib, trasz Differential Revision: https://reviews.freebsd.org/D21845
178 lines
5.7 KiB
C
178 lines
5.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2007 Roman Divacky
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_FILE_H_
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#define _LINUX_FILE_H_
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#define LINUX_AT_FDCWD -100
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#define LINUX_AT_SYMLINK_NOFOLLOW 0x100
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#define LINUX_AT_EACCESS 0x200
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#define LINUX_AT_REMOVEDIR 0x200
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#define LINUX_AT_SYMLINK_FOLLOW 0x400
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/*
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* posix_fadvise advice
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*/
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#define LINUX_POSIX_FADV_NORMAL 0
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#define LINUX_POSIX_FADV_RANDOM 1
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#define LINUX_POSIX_FADV_SEQUENTIAL 2
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#define LINUX_POSIX_FADV_WILLNEED 3
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#define LINUX_POSIX_FADV_DONTNEED 4
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#define LINUX_POSIX_FADV_NOREUSE 5
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/*
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* mount flags
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*/
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#define LINUX_MS_RDONLY 0x0001
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#define LINUX_MS_NOSUID 0x0002
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#define LINUX_MS_NODEV 0x0004
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#define LINUX_MS_NOEXEC 0x0008
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#define LINUX_MS_REMOUNT 0x0020
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/*
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* umount2 flags
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*/
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#define LINUX_MNT_FORCE 0x0001
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/*
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* common open/fcntl flags
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*/
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#define LINUX_O_RDONLY 00000000
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#define LINUX_O_WRONLY 00000001
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#define LINUX_O_RDWR 00000002
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#define LINUX_O_ACCMODE 00000003
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#define LINUX_O_CREAT 00000100
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#define LINUX_O_EXCL 00000200
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#define LINUX_O_NOCTTY 00000400
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#define LINUX_O_TRUNC 00001000
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#define LINUX_O_APPEND 00002000
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#define LINUX_O_NONBLOCK 00004000
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#define LINUX_O_NDELAY LINUX_O_NONBLOCK
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#define LINUX_O_SYNC 00010000
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#define LINUX_O_ASYNC 00020000
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#define LINUX_O_DIRECT 00040000 /* Direct disk access hint */
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#define LINUX_O_LARGEFILE 00100000
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#define LINUX_O_DIRECTORY 00200000 /* Must be a directory */
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#define LINUX_O_NOFOLLOW 00400000 /* Do not follow links */
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#define LINUX_O_NOATIME 01000000
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#define LINUX_O_CLOEXEC 02000000
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#define LINUX_F_DUPFD 0
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#define LINUX_F_GETFD 1
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#define LINUX_F_SETFD 2
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#define LINUX_F_GETFL 3
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#define LINUX_F_SETFL 4
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#ifndef LINUX_F_GETLK
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#define LINUX_F_GETLK 5
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#define LINUX_F_SETLK 6
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#define LINUX_F_SETLKW 7
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#endif
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#ifndef LINUX_F_SETOWN
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#define LINUX_F_SETOWN 8
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#define LINUX_F_GETOWN 9
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#endif
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#ifndef LINUX_F_SETSIG
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#define LINUX_F_SETSIG 10
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#define LINUX_F_GETSIG 11
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#endif
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#ifndef LINUX_F_SETOWN_EX
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#define LINUX_F_SETOWN_EX 15
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#define LINUX_F_GETOWN_EX 16
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#define LINUX_F_GETOWNER_UIDS 17
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#endif
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#define LINUX_F_SPECIFIC_BASE 1024
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#define LINUX_F_SETLEASE (LINUX_F_SPECIFIC_BASE + 0)
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#define LINUX_F_GETLEASE (LINUX_F_SPECIFIC_BASE + 1)
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#define LINUX_F_CANCELLK (LINUX_F_SPECIFIC_BASE + 5)
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#define LINUX_F_DUPFD_CLOEXEC (LINUX_F_SPECIFIC_BASE + 6)
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#define LINUX_F_NOTIFY (LINUX_F_SPECIFIC_BASE + 2)
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#define LINUX_F_SETPIPE_SZ (LINUX_F_SPECIFIC_BASE + 7)
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#define LINUX_F_GETPIPE_SZ (LINUX_F_SPECIFIC_BASE + 8)
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#define LINUX_F_ADD_SEALS (LINUX_F_SPECIFIC_BASE + 9)
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#define LINUX_F_GET_SEALS (LINUX_F_SPECIFIC_BASE + 10)
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#define LINUX_F_GETLKP 36
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#define LINUX_F_SETLKP 37
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#define LINUX_F_SETLKPW 38
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#define LINUX_F_OWNER_TID 0
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#define LINUX_F_OWNER_PID 1
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#define LINUX_F_OWNER_PGRP 2
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#ifndef LINUX_F_RDLCK
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#define LINUX_F_RDLCK 0
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#define LINUX_F_WRLCK 1
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#define LINUX_F_UNLCK 2
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#endif
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/*
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* renameat2 flags
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*/
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#define LINUX_RENAME_NOREPLACE 0x00000001
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#define LINUX_RENAME_EXCHANGE 0x00000002
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#define LINUX_RENAME_WHITEOUT 0x00000004
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/*
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* sync_file_range flags
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*/
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#define LINUX_SYNC_FILE_RANGE_WAIT_BEFORE 1
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#define LINUX_SYNC_FILE_RANGE_WRITE 2
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#define LINUX_SYNC_FILE_RANGE_WAIT_AFTER 4
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#define LINUX_F_SEAL_SEAL 0x0001
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#define LINUX_F_SEAL_SHRINK 0x0002
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#define LINUX_F_SEAL_GROW 0x0004
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#define LINUX_F_SEAL_WRITE 0x0008
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#define LINUX_MFD_CLOEXEC 0x0001
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#define LINUX_MFD_ALLOW_SEALING 0x0002
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#define LINUX_MFD_HUGETLB 0x0004
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#define LINUX_HUGETLB_FLAG_ENCODE_SHIFT 26
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#define LINUX_HUGETLB_FLAG_ENCODE_MASK 0x3f
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#define LINUX_HUGETLB_FLAG_ENCODE_64KB (16 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_512KB (19 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_1MB (20 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_2MB (21 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_8MB (23 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_16MB (24 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_32MB (25 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_256MB (28 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_512MB (29 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_1GB (30 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_2GB (31 << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#define LINUX_HUGETLB_FLAG_ENCODE_16GB (34U << LINUX_HUGETLB_FLAG_ENCODE_SHIFT)
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#endif /* !_LINUX_FILE_H_ */
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