xref: /freebsd/sys/compat/linux/linux_misc.h (revision d93a896e)
1 /*-
2  * Copyright (c) 2006 Roman Divacky
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer
10  *    in this position and unchanged.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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 struct l_new_utsname {
109 	char	sysname[LINUX_MAX_UTSNAME];
110 	char	nodename[LINUX_MAX_UTSNAME];
111 	char	release[LINUX_MAX_UTSNAME];
112 	char	version[LINUX_MAX_UTSNAME];
113 	char	machine[LINUX_MAX_UTSNAME];
114 	char	domainname[LINUX_MAX_UTSNAME];
115 };
116 
117 #define LINUX_UTIME_NOW			0x3FFFFFFF
118 #define LINUX_UTIME_OMIT		0x3FFFFFFE
119 
120 extern int stclohz;
121 
122 #define	LINUX_WNOHANG		0x00000001
123 #define	LINUX_WUNTRACED		0x00000002
124 #define	LINUX_WSTOPPED		LINUX_WUNTRACED
125 #define	LINUX_WEXITED		0x00000004
126 #define	LINUX_WCONTINUED	0x00000008
127 #define	LINUX_WNOWAIT		0x01000000
128 
129 
130 #define	__WNOTHREAD		0x20000000
131 #define	__WALL			0x40000000
132 #define	__WCLONE		0x80000000
133 
134 /* Linux waitid idtype  */
135 #define	LINUX_P_ALL		0
136 #define	LINUX_P_PID		1
137 #define	LINUX_P_PGID		2
138 
139 #define	LINUX_RLIMIT_LOCKS	RLIM_NLIMITS + 1
140 #define	LINUX_RLIMIT_SIGPENDING	RLIM_NLIMITS + 2
141 #define	LINUX_RLIMIT_MSGQUEUE	RLIM_NLIMITS + 3
142 #define	LINUX_RLIMIT_NICE	RLIM_NLIMITS + 4
143 #define	LINUX_RLIMIT_RTPRIO	RLIM_NLIMITS + 5
144 #define	LINUX_RLIMIT_RTTIME	RLIM_NLIMITS + 6
145 
146 #define	LINUX_RLIM_INFINITY	(~0UL)
147 
148 /* Linux getrandom flags */
149 #define	LINUX_GRND_NONBLOCK	0x0001
150 #define	LINUX_GRND_RANDOM	0x0002
151 
152 int linux_common_wait(struct thread *td, int pid, int *status,
153 			int options, struct rusage *ru);
154 void linux_to_bsd_waitopts(int options, int *bsdopts);
155 int linux_set_upcall_kse(struct thread *td, register_t stack);
156 int linux_set_cloned_tls(struct thread *td, void *desc);
157 struct thread	*linux_tdfind(struct thread *, lwpid_t, pid_t);
158 
159 int linux_sysctl_debug(SYSCTL_HANDLER_ARGS);
160 
161 #endif	/* _LINUX_MISC_H_ */
162