1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #ifndef _SYS_LX_H
28 #define _SYS_LX_H
29
30 #include <stdio.h>
31 #include <alloca.h>
32 #include <sys/types.h>
33 #include <sys/param.h>
34 #include <sys/lwp.h>
35
36 #include <sys/lx_brand.h>
37
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
41
42 extern char lx_release[128];
43 extern pid_t zoneinit_pid;
44
45 /*
46 * Support for the unfortunate RPM race condition workaround.
47 */
48 extern int lx_rpm_delay;
49 extern boolean_t lx_is_rpm;
50
51 /*
52 * Values Linux expects for init
53 */
54 #define LX_INIT_PGID 0
55 #define LX_INIT_SID 0
56 #define LX_INIT_PID 1
57
58 /*
59 * Codes to reboot(2).
60 */
61 #define LINUX_REBOOT_MAGIC1 0xfee1dead
62 #define LINUX_REBOOT_MAGIC2 672274793
63 #define LINUX_REBOOT_MAGIC2A 85072278
64 #define LINUX_REBOOT_MAGIC2B 369367448
65 #define LINUX_REBOOT_MAGIC2C 537993216
66
67 /*
68 * This was observed as coming from Red Hat's init process, but it's not in
69 * their reboot(2) man page.
70 */
71 #define LINUX_REBOOT_MAGIC2D 0x28121969
72
73 #define LINUX_REBOOT_CMD_RESTART 0x1234567
74 #define LINUX_REBOOT_CMD_HALT 0xcdef0123
75 #define LINUX_REBOOT_CMD_POWER_OFF 0x4321fedc
76 #define LINUX_REBOOT_CMD_RESTART2 0xa1b2c3d4
77 #define LINUX_REBOOT_CMD_CAD_ON 0x89abcdef
78 #define LINUX_REBOOT_CMD_CAD_OFF 0
79
80 /*
81 * the maximum length of messages to be output with lx_msg(), lx_err(),
82 * lx_debug(), or lx_unsupported().
83 */
84 #define LX_MSG_MAXLEN (128 + MAXPATHLEN)
85
86 /*
87 * Linux scheduler priority ranges.
88 */
89 #define LX_SCHED_PRIORITY_MIN_OTHER 0
90 #define LX_SCHED_PRIORITY_MAX_OTHER 0
91 #define LX_SCHED_PRIORITY_MIN_RRFIFO 1
92 #define LX_SCHED_PRIORITY_MAX_RRFIFO 99
93
94 /*
95 * Constants to indicate who getrusage() should return information about.
96 */
97 #define LX_RUSAGE_SELF 0
98 #define LX_RUSAGE_CHILDREN (-1)
99
100 /*
101 * normally we never want to write to stderr or stdout because it's unsafe
102 * to make assumptions about the underlying file descriptors. to protect
103 * against writes to these file descriptors we go ahead and close them
104 * our brand process initalization code. but there are still occasions
105 * where we are willing to make assumptions about our file descriptors
106 * and write to them. at thes times we should use one lx_msg() or
107 * lx_msg_error()
108 */
109 extern void lx_msg(char *, ...);
110 extern void lx_err(char *, ...);
111 extern void lx_err_fatal(char *, ...);
112 extern void lx_unsupported(char *, ...);
113
114 struct ucontext;
115
116 extern void lx_handler_table(void);
117 extern void lx_handler_trace_table(void);
118 extern void lx_emulate_done(void);
119 extern lx_regs_t *lx_syscall_regs(void);
120
121 extern char *lx_fd_to_path(int fd, char *buf, int buf_size);
122 extern int lx_lpid_to_spair(pid_t, pid_t *, lwpid_t *);
123 extern int lx_lpid_to_spid(pid_t, pid_t *);
124
125 extern int lx_ptrace_wait(siginfo_t *);
126 extern void lx_ptrace_fork(void);
127
128 extern int lx_get_kern_version(void);
129
130 extern int lx_check_alloca(size_t);
131 #define SAFE_ALLOCA(sz) (lx_check_alloca(sz) ? alloca(sz) : NULL)
132
133 extern int ltos_at_flag(int lflag, int allow);
134
135 /*
136 * NO_UUCOPY disables calls to the uucopy* system calls to help with
137 * debugging brand library accesses to linux application memory.
138 */
139 #ifdef NO_UUCOPY
140
141 int uucopy_unsafe(const void *src, void *dst, size_t n);
142 int uucopystr_unsafe(const void *src, void *dst, size_t n);
143
144 #define uucopy(src, dst, n) uucopy_unsafe((src), (dst), (n))
145 #define uucopystr(src, dst, n) uucopystr_unsafe((src), (dst), (n))
146
147 #endif /* NO_UUCOPY */
148
149 #ifdef __cplusplus
150 }
151 #endif
152
153 #endif /* _SYS_LX_H */