/* $NetBSD: linux_misc.h,v 1.34 2024/10/01 16:41:29 riastradh Exp $ */

/* $NetBSD: linux_misc.h,v 1.34 2024/10/01 16:41:29 riastradh Exp $ */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Eric Haszlakiewicz.
*
* 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, 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

#ifndef _LINUX_MISC_H
#define _LINUX_MISC_H

/*
* Options passed to the Linux wait4() and waitid() system calls.
*/
#define LINUX_WNOHANG 0x00000001
#define LINUX_WUNTRACED 0x00000002
#define LINUX_WEXITED 0x00000004
#define LINUX_WCONTINUED 0x00000008
#define LINUX_WNOWAIT 0x01000000
#define LINUX_WNOTHREAD 0x20000000
#define LINUX_WALL 0x40000000
#define LINUX_WCLONE 0x80000000

#define LINUX_WAIT4_KNOWNFLAGS (LINUX_WNOHANG | \
LINUX_WUNTRACED | \
LINUX_WCONTINUED | \
LINUX_WNOTHREAD | \
LINUX_WALL | \
LINUX_WCLONE)

#define LINUX_WAITID_KNOWNFLAGS (LINUX_WNOHANG | \
LINUX_WEXITED | \
LINUX_WUNTRACED | \
LINUX_WCONTINUED | \
LINUX_WNOWAIT)

/*
* Passed as the first argument of waitid(2).
*/
#define LINUX_P_ALL 0
#define LINUX_P_PID 1
#define LINUX_P_PGID 2
#define LINUX_P_PIDFD 3

/* This looks very unportable to me, but this is how Linux defines it. */
struct linux_sysinfo {
long uptime;
unsigned long loads[3];
#define LINUX_SYSINFO_LOADS_SCALE 65536
unsigned long totalram;
unsigned long freeram;
unsigned long sharedram;
unsigned long bufferram;
unsigned long totalswap;
unsigned long freeswap;
unsigned short procs;
unsigned long totalbig;
unsigned long freebig;
unsigned int mem_unit;
char _f[20-2*sizeof(long)-sizeof(int)];
};

#define LINUX_RLIMIT_CPU 0
#define LINUX_RLIMIT_FSIZE 1
#define LINUX_RLIMIT_DATA 2
#define LINUX_RLIMIT_STACK 3
#define LINUX_RLIMIT_CORE 4
#define LINUX_RLIMIT_RSS 5
#define LINUX_RLIMIT_NPROC 6
#define LINUX_RLIMIT_NOFILE 7
#define LINUX_RLIMIT_MEMLOCK 8
#define LINUX_RLIMIT_AS 9
#define LINUX_RLIMIT_LOCKS 10
#define LINUX_RLIMIT_SIGPENDING 11
#define LINUX_RLIMIT_MSGQUEUE 12
#define LINUX_RLIMIT_NICE 13
#define LINUX_RLIMIT_RTPRIO 14
#define LINUX_RLIMIT_RTTIME 15
#ifdef __mips__ /* XXX only mips32. On mips64, it's ~0ul */
#define LINUX_RLIM_INFINITY 0x7fffffffUL
#define LINUX32_RLIM_INFINITY 0x7fffffffU
#else
#define LINUX_RLIM_INFINITY ~0ul
#define LINUX32_RLIM_INFINITY ~0u
#endif

/* When we don't know what to do, let it believe it is local */
#define LINUX_DEFAULT_SUPER_MAGIC LINUX_EXT2_SUPER_MAGIC

#define LINUX_ADFS_SUPER_MAGIC 0x0000adf5
#define LINUX_AFFS_SUPER_MAGIC 0x0000adff
#define LINUX_CODA_SUPER_MAGIC 0x73757245
#define LINUX_COH_SUPER_MAGIC (LINUX_SYSV_MAGIC_BASE + 4)
#define LINUX_DEVFS_SUPER_MAGIC 0x00001373
#define LINUX_EFS_SUPER_MAGIC 0x00414A53
#define LINUX_EXT2_SUPER_MAGIC 0x0000EF53
#define LINUX_HPFS_SUPER_MAGIC 0xf995e849
#define LINUX_ISOFS_SUPER_MAGIC 0x00009660
#define LINUX_MINIX2_SUPER_MAGIC 0x00002468
#define LINUX_MINIX2_SUPER_MAGIC2 0x00002478
#define LINUX_MINIX_SUPER_MAGIC 0x0000137F
#define LINUX_MINIX_SUPER_MAGIC2 0x0000138F
#define LINUX_MSDOS_SUPER_MAGIC 0x00004d44
#define LINUX_NCP_SUPER_MAGIC 0x0000564c
#define LINUX_NFS_SUPER_MAGIC 0x00006969
#define LINUX_OPENPROM_SUPER_MAGIC 0x00009fa1
#define LINUX_PROC_SUPER_MAGIC 0x00009fa0
#define LINUX_QNX4_SUPER_MAGIC 0x0000002f
#define LINUX_REISERFS_SUPER_MAGIC 0x52654973
#define LINUX_SMB_SUPER_MAGIC 0x0000517B
#define LINUX_SYSV2_SUPER_MAGIC (LINUX_SYSV_MAGIC_BASE + 3)
#define LINUX_SYSV4_SUPER_MAGIC (LINUX_SYSV_MAGIC_BASE + 2)
#define LINUX_SYSV_MAGIC_BASE 0x012FF7B3
#define LINUX_TMPFS_SUPER_MAGIC 0x01021994
#define LINUX_USBDEVICE_SUPER_MAGIC 0x00009fa2
#define LINUX_DEVPTS_SUPER_MAGIC 0x00001cd1
#define LINUX_XENIX_SUPER_MAGIC (LINUX_SYSV_MAGIC_BASE + 1)

struct linux_mnttypes {
const char *mty_bsd;
int mty_linux;
};
extern const struct linux_mnttypes linux_fstypes[];
extern const int linux_fstypes_cnt;

/* Personality types. */
#define LINUX_PER_QUERY 0xffffffff
#define LINUX_PER_LINUX 0x00
#define LINUX_PER_LINUX32 0x08
#define LINUX_PER_MASK 0xff

/* Personality flags. */
#define LINUX_PER_ADDR_NO_RANDOMIZE 0x00040000

/*
* Convert POSIX_FADV_* constants from Linux to NetBSD
* (it's f(x)=x everywhere except S390)
*/
#define linux_to_bsd_posix_fadv(advice) (advice)

struct linux_getcpu_cache{
unsigned long blob[128 / sizeof(long)];
};

struct linux_epoll_event {
uint32_t events;
uint64_t data;
}

#if defined(__amd64__)
/* Only for x86_64. See include/uapi/linux/eventpoll.h. */
__packed
#endif
;

#ifdef _KERNEL
__BEGIN_DECLS
struct linux_timeval;
int bsd_to_linux_wstat(int);
int linux_select1(struct lwp *, register_t *, int, fd_set *, fd_set *,
fd_set *, struct linux_timeval *);
int linux_do_sys_utimensat(struct lwp *, int, const char *,
struct timespec *, int, register_t *);
int linux_do_futex(int *, int, int, struct timespec *, int *, int, int,
register_t *);
__END_DECLS
#endif /* !_KERNEL */

#endif /* !_LINUX_MISC_H */