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linux_misc.h revision 1.31
      1 /*	$NetBSD: linux_misc.h,v 1.31 2024/05/12 19:50:42 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Eric Haszlakiewicz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _LINUX_MISC_H
     33 #define _LINUX_MISC_H
     34 
     35 /*
     36  * Options passed to the Linux wait4() and waitid() system calls.
     37  */
     38 #define LINUX_WNOHANG		0x00000001
     39 #define LINUX_WUNTRACED		0x00000002
     40 #define LINUX_WEXITED		0x00000004
     41 #define LINUX_WCONTINUED	0x00000008
     42 #define LINUX_WNOWAIT		0x01000000
     43 #define LINUX_WNOTHREAD		0x20000000
     44 #define LINUX_WALL		0x40000000
     45 #define LINUX_WCLONE		0x80000000
     46 
     47 #define LINUX_WAIT4_KNOWNFLAGS (LINUX_WNOHANG | \
     48                                 LINUX_WUNTRACED | \
     49                                 LINUX_WCONTINUED | \
     50                                 LINUX_WNOTHREAD | \
     51                                 LINUX_WALL | \
     52                                 LINUX_WCLONE)
     53 
     54 #define LINUX_WAITID_KNOWNFLAGS (LINUX_WNOHANG | \
     55 				 LINUX_WEXITED | \
     56 				 LINUX_WUNTRACED | \
     57 				 LINUX_WCONTINUED | \
     58 				 LINUX_WNOWAIT)
     59 
     60 /*
     61  * Passed as the first argument of waitid(2).
     62  */
     63 #define LINUX_P_ALL	0
     64 #define LINUX_P_PID	1
     65 #define LINUX_P_PGID	2
     66 #define LINUX_P_PIDFD	3
     67 
     68 /* This looks very unportable to me, but this is how Linux defines it. */
     69 struct linux_sysinfo {
     70 	long uptime;
     71 	unsigned long loads[3];
     72 #define LINUX_SYSINFO_LOADS_SCALE 65536
     73 	unsigned long totalram;
     74 	unsigned long freeram;
     75 	unsigned long sharedram;
     76 	unsigned long bufferram;
     77 	unsigned long totalswap;
     78 	unsigned long freeswap;
     79 	unsigned short procs;
     80 	unsigned long totalbig;
     81 	unsigned long freebig;
     82 	unsigned int mem_unit;
     83 	char _f[20-2*sizeof(long)-sizeof(int)];
     84 };
     85 
     86 #define	LINUX_RLIMIT_CPU	0
     87 #define	LINUX_RLIMIT_FSIZE	1
     88 #define	LINUX_RLIMIT_DATA	2
     89 #define	LINUX_RLIMIT_STACK	3
     90 #define	LINUX_RLIMIT_CORE	4
     91 #define	LINUX_RLIMIT_RSS	5
     92 #define	LINUX_RLIMIT_NPROC	6
     93 #define	LINUX_RLIMIT_NOFILE	7
     94 #define	LINUX_RLIMIT_MEMLOCK	8
     95 #define	LINUX_RLIMIT_AS		9
     96 #define	LINUX_RLIMIT_LOCKS	10
     97 #define	LINUX_RLIMIT_SIGPENDING	11
     98 #define	LINUX_RLIMIT_MSGQUEUE	12
     99 #define	LINUX_RLIMIT_NICE	13
    100 #define	LINUX_RLIMIT_RTPRIO	14
    101 #define	LINUX_RLIMIT_RTTIME	15
    102 #ifdef __mips__  /* XXX only mips32. On mips64, it's ~0ul */
    103 #define	LINUX_RLIM_INFINITY	0x7fffffffUL
    104 #define	LINUX32_RLIM_INFINITY	0x7fffffffU
    105 #else
    106 #define	LINUX_RLIM_INFINITY	~0ul
    107 #define	LINUX32_RLIM_INFINITY	~0u
    108 #endif
    109 
    110 
    111 /* When we don't know what to do, let it believe it is local */
    112 #define	LINUX_DEFAULT_SUPER_MAGIC	LINUX_EXT2_SUPER_MAGIC
    113 
    114 #define	LINUX_ADFS_SUPER_MAGIC		0x0000adf5
    115 #define	LINUX_AFFS_SUPER_MAGIC		0x0000adff
    116 #define	LINUX_CODA_SUPER_MAGIC		0x73757245
    117 #define	LINUX_COH_SUPER_MAGIC		(LINUX_SYSV_MAGIC_BASE + 4)
    118 #define	LINUX_DEVFS_SUPER_MAGIC		0x00001373
    119 #define	LINUX_EFS_SUPER_MAGIC		0x00414A53
    120 #define	LINUX_EXT2_SUPER_MAGIC		0x0000EF53
    121 #define	LINUX_HPFS_SUPER_MAGIC		0xf995e849
    122 #define	LINUX_ISOFS_SUPER_MAGIC		0x00009660
    123 #define	LINUX_MINIX2_SUPER_MAGIC	0x00002468
    124 #define	LINUX_MINIX2_SUPER_MAGIC2	0x00002478
    125 #define	LINUX_MINIX_SUPER_MAGIC		0x0000137F
    126 #define	LINUX_MINIX_SUPER_MAGIC2	0x0000138F
    127 #define	LINUX_MSDOS_SUPER_MAGIC		0x00004d44
    128 #define	LINUX_NCP_SUPER_MAGIC		0x0000564c
    129 #define	LINUX_NFS_SUPER_MAGIC		0x00006969
    130 #define	LINUX_OPENPROM_SUPER_MAGIC	0x00009fa1
    131 #define	LINUX_PROC_SUPER_MAGIC		0x00009fa0
    132 #define	LINUX_QNX4_SUPER_MAGIC		0x0000002f
    133 #define	LINUX_REISERFS_SUPER_MAGIC	0x52654973
    134 #define	LINUX_SMB_SUPER_MAGIC		0x0000517B
    135 #define	LINUX_SYSV2_SUPER_MAGIC		(LINUX_SYSV_MAGIC_BASE + 3)
    136 #define	LINUX_SYSV4_SUPER_MAGIC		(LINUX_SYSV_MAGIC_BASE + 2)
    137 #define	LINUX_SYSV_MAGIC_BASE		0x012FF7B3
    138 #define	LINUX_TMPFS_SUPER_MAGIC		0x01021994
    139 #define	LINUX_USBDEVICE_SUPER_MAGIC	0x00009fa2
    140 #define	LINUX_DEVPTS_SUPER_MAGIC	0x00001cd1
    141 #define	LINUX_XENIX_SUPER_MAGIC		(LINUX_SYSV_MAGIC_BASE + 1)
    142 
    143 struct linux_mnttypes {
    144 	const char *mty_bsd;
    145 	int mty_linux;
    146 };
    147 extern const struct linux_mnttypes linux_fstypes[];
    148 extern const int linux_fstypes_cnt;
    149 
    150 /* Personality types. */
    151 #define LINUX_PER_QUERY		0xffffffff
    152 #define LINUX_PER_LINUX		0x00
    153 #define LINUX_PER_LINUX32	0x08
    154 #define LINUX_PER_MASK		0xff
    155 
    156 /* Personality flags. */
    157 #define LINUX_PER_ADDR_NO_RANDOMIZE	0x00040000
    158 
    159 /*
    160  * Convert POSIX_FADV_* constants from Linux to NetBSD
    161  * (it's f(x)=x everywhere except S390)
    162  */
    163 #define linux_to_bsd_posix_fadv(advice) (advice)
    164 
    165 struct linux_epoll_event {
    166 	uint32_t	events;
    167 	uint64_t	data;
    168 }
    169 #if defined(__amd64__)
    170 /* Only for x86_64. See include/uapi/linux/eventpoll.h. */
    171 __packed
    172 #endif
    173 ;
    174 
    175 #ifdef _KERNEL
    176 __BEGIN_DECLS
    177 int bsd_to_linux_wstat(int);
    178 int linux_select1(struct lwp *, register_t *, int, fd_set *, fd_set *,
    179 		       fd_set *, struct linux_timeval *);
    180 int linux_do_sys_utimensat(struct lwp *, int, const char *,
    181     struct timespec *, int, register_t *);
    182 int linux_do_futex(int *, int, int, struct timespec *, int *, int, int,
    183     register_t *);
    184 __END_DECLS
    185 #endif /* !_KERNEL */
    186 
    187 #endif /* !_LINUX_MISC_H */
    188