xref: /freebsd/sys/compat/linux/linux_misc.h (revision 7cc42f6d)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2006 Roman Divacky
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #ifndef _LINUX_MISC_H_
32 #define	_LINUX_MISC_H_
33 
34 #include <sys/sysctl.h>
35 
36 				/* bits per mask */
37 #define	LINUX_NFDBITS		sizeof(l_fd_mask) * 8
38 
39 /*
40  * Miscellaneous
41  */
42 #define	LINUX_NAME_MAX		255
43 #define	LINUX_MAX_UTSNAME	65
44 
45 #define	LINUX_CTL_MAXNAME	10
46 
47 /* defines for prctl */
48 #define	LINUX_PR_SET_PDEATHSIG  1	/* Second arg is a signal. */
49 #define	LINUX_PR_GET_PDEATHSIG  2	/*
50 					 * Second arg is a ptr to return the
51 					 * signal.
52 					 */
53 #define	LINUX_PR_GET_KEEPCAPS	7	/* Get drop capabilities on setuid */
54 #define	LINUX_PR_SET_KEEPCAPS	8	/* Set drop capabilities on setuid */
55 #define	LINUX_PR_SET_NAME	15	/* Set process name. */
56 #define	LINUX_PR_GET_NAME	16	/* Get process name. */
57 
58 #define	LINUX_MAX_COMM_LEN	16	/* Maximum length of the process name. */
59 
60 #define	LINUX_MREMAP_MAYMOVE	1
61 #define	LINUX_MREMAP_FIXED	2
62 
63 #define	LINUX_PATH_MAX		4096
64 
65 extern const char *linux_kplatform;
66 
67 /*
68  * Non-standard aux entry types used in Linux ELF binaries.
69  */
70 
71 #define	LINUX_AT_PLATFORM	15	/* String identifying CPU */
72 #define	LINUX_AT_HWCAP		16	/* CPU capabilities */
73 #define	LINUX_AT_CLKTCK		17	/* frequency at which times() increments */
74 #define	LINUX_AT_SECURE		23	/* secure mode boolean */
75 #define	LINUX_AT_BASE_PLATFORM	24	/* string identifying real platform, may
76 					 * differ from AT_PLATFORM.
77 					 */
78 #define	LINUX_AT_RANDOM		25	/* address of random bytes */
79 #define	LINUX_AT_EXECFN		31	/* filename of program */
80 #define	LINUX_AT_SYSINFO	32	/* vsyscall */
81 #define	LINUX_AT_SYSINFO_EHDR	33	/* vdso header */
82 
83 #define	LINUX_AT_RANDOM_LEN	16	/* size of random bytes */
84 
85 /* Linux sets the i387 to extended precision. */
86 #if defined(__i386__) || defined(__amd64__)
87 #define	__LINUX_NPXCW__		0x37f
88 #endif
89 
90 #define	LINUX_CLONE_VM			0x00000100
91 #define	LINUX_CLONE_FS			0x00000200
92 #define	LINUX_CLONE_FILES		0x00000400
93 #define	LINUX_CLONE_SIGHAND		0x00000800
94 #define	LINUX_CLONE_PID			0x00001000	/* No longer exist in Linux */
95 #define	LINUX_CLONE_VFORK		0x00004000
96 #define	LINUX_CLONE_PARENT		0x00008000
97 #define	LINUX_CLONE_THREAD		0x00010000
98 #define	LINUX_CLONE_SETTLS		0x00080000
99 #define	LINUX_CLONE_PARENT_SETTID	0x00100000
100 #define	LINUX_CLONE_CHILD_CLEARTID	0x00200000
101 #define	LINUX_CLONE_CHILD_SETTID	0x01000000
102 
103 /* Scheduling policies */
104 #define	LINUX_SCHED_OTHER	0
105 #define	LINUX_SCHED_FIFO	1
106 #define	LINUX_SCHED_RR		2
107 
108 #define	LINUX_MAX_RT_PRIO	100
109 
110 struct l_new_utsname {
111 	char	sysname[LINUX_MAX_UTSNAME];
112 	char	nodename[LINUX_MAX_UTSNAME];
113 	char	release[LINUX_MAX_UTSNAME];
114 	char	version[LINUX_MAX_UTSNAME];
115 	char	machine[LINUX_MAX_UTSNAME];
116 	char	domainname[LINUX_MAX_UTSNAME];
117 };
118 
119 #define LINUX_UTIME_NOW			0x3FFFFFFF
120 #define LINUX_UTIME_OMIT		0x3FFFFFFE
121 
122 extern int stclohz;
123 
124 #define	LINUX_WNOHANG		0x00000001
125 #define	LINUX_WUNTRACED		0x00000002
126 #define	LINUX_WSTOPPED		LINUX_WUNTRACED
127 #define	LINUX_WEXITED		0x00000004
128 #define	LINUX_WCONTINUED	0x00000008
129 #define	LINUX_WNOWAIT		0x01000000
130 
131 #define	__WNOTHREAD		0x20000000
132 #define	__WALL			0x40000000
133 #define	__WCLONE		0x80000000
134 
135 /* Linux waitid idtype  */
136 #define	LINUX_P_ALL		0
137 #define	LINUX_P_PID		1
138 #define	LINUX_P_PGID		2
139 
140 #define	LINUX_RLIMIT_LOCKS	RLIM_NLIMITS + 1
141 #define	LINUX_RLIMIT_SIGPENDING	RLIM_NLIMITS + 2
142 #define	LINUX_RLIMIT_MSGQUEUE	RLIM_NLIMITS + 3
143 #define	LINUX_RLIMIT_NICE	RLIM_NLIMITS + 4
144 #define	LINUX_RLIMIT_RTPRIO	RLIM_NLIMITS + 5
145 #define	LINUX_RLIMIT_RTTIME	RLIM_NLIMITS + 6
146 
147 #define	LINUX_RLIM_INFINITY	(~0UL)
148 
149 /* Linux getrandom flags */
150 #define	LINUX_GRND_NONBLOCK	0x0001
151 #define	LINUX_GRND_RANDOM	0x0002
152 
153 /* Linux syslog flags */
154 #define	LINUX_SYSLOG_ACTION_READ_ALL	3
155 
156 #if defined(__amd64__) && !defined(COMPAT_LINUX32)
157 int linux_ptrace_status(struct thread *td, int pid, int status);
158 #endif
159 void linux_to_bsd_waitopts(int options, int *bsdopts);
160 int linux_set_upcall_kse(struct thread *td, register_t stack);
161 int linux_set_cloned_tls(struct thread *td, void *desc);
162 struct thread	*linux_tdfind(struct thread *, lwpid_t, pid_t);
163 
164 #endif	/* _LINUX_MISC_H_ */
165