xref: /illumos-gate/usr/src/uts/common/sys/corectl.h (revision 8e458de0)
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  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef _SYS_CORECTL_H
27 #define	_SYS_CORECTL_H
28 
29 #include <sys/types.h>
30 #include <sys/zone.h>
31 #include <sys/refstr.h>
32 #include <sys/mutex.h>
33 
34 #ifdef	__cplusplus
35 extern "C" {
36 #endif
37 
38 /*
39  * Definitions for corectl() system call.
40  */
41 
42 /* subcodes */
43 #define	CC_SET_OPTIONS		1
44 #define	CC_GET_OPTIONS		2
45 #define	CC_SET_GLOBAL_PATH	3
46 #define	CC_GET_GLOBAL_PATH	4
47 #define	CC_SET_PROCESS_PATH	5
48 #define	CC_GET_PROCESS_PATH	6
49 #define	CC_SET_GLOBAL_CONTENT	7
50 #define	CC_GET_GLOBAL_CONTENT	8
51 #define	CC_SET_PROCESS_CONTENT	9
52 #define	CC_GET_PROCESS_CONTENT	10
53 #define	CC_SET_DEFAULT_PATH	11
54 #define	CC_GET_DEFAULT_PATH	12
55 #define	CC_SET_DEFAULT_CONTENT	13
56 #define	CC_GET_DEFAULT_CONTENT	14
57 
58 /* options */
59 #define	CC_GLOBAL_PATH		0x01	/* enable global core files */
60 #define	CC_PROCESS_PATH		0x02	/* enable per-process core files */
61 #define	CC_GLOBAL_SETID		0x04	/* allow global setid core files */
62 #define	CC_PROCESS_SETID	0x08	/* allow per-process setid core files */
63 #define	CC_GLOBAL_LOG		0x10	/* log global core dumps to syslog */
64 
65 /* all of the above */
66 #define	CC_OPTIONS	\
67 	(CC_GLOBAL_PATH | CC_PROCESS_PATH | \
68 	CC_GLOBAL_SETID | CC_PROCESS_SETID | CC_GLOBAL_LOG)
69 
70 /* contents */
71 #define	CC_CONTENT_STACK	0x0001ULL /* process stack */
72 #define	CC_CONTENT_HEAP		0x0002ULL /* process heap */
73 
74 /* MAP_SHARED file mappings */
75 #define	CC_CONTENT_SHFILE	0x0004ULL /* file-backed shared mapping */
76 #define	CC_CONTENT_SHANON	0x0008ULL /* anonymous shared mapping */
77 
78 /* MAP_PRIVATE file mappings */
79 #define	CC_CONTENT_TEXT		0x0010ULL /* read/exec file mappings */
80 #define	CC_CONTENT_DATA		0x0020ULL /* writable file mappings */
81 #define	CC_CONTENT_RODATA	0x0040ULL /* read-only file mappings */
82 #define	CC_CONTENT_ANON		0x0080ULL /* anonymous mappings (MAP_ANON) */
83 
84 #define	CC_CONTENT_SHM		0x0100ULL /* System V shared memory */
85 #define	CC_CONTENT_ISM		0x0200ULL /* intimate shared memory */
86 #define	CC_CONTENT_DISM		0x0400ULL /* dynamic intimate shared memory */
87 
88 #define	CC_CONTENT_CTF		0x0800ULL /* CTF data */
89 #define	CC_CONTENT_SYMTAB	0x1000ULL /* symbol table */
90 #define	CC_CONTENT_DEBUG	0x2000ULL /* debug information */
91 
92 #define	CC_CONTENT_ALL		0x3fffULL
93 #define	CC_CONTENT_NONE		0ULL
94 #define	CC_CONTENT_DEFAULT	(CC_CONTENT_STACK | CC_CONTENT_HEAP | \
95 	CC_CONTENT_ISM | CC_CONTENT_DISM | CC_CONTENT_SHM | \
96 	CC_CONTENT_SHANON | CC_CONTENT_TEXT | CC_CONTENT_DATA | \
97 	CC_CONTENT_RODATA | CC_CONTENT_ANON | CC_CONTENT_CTF | \
98 	CC_CONTENT_SYMTAB)
99 #define	CC_CONTENT_INVALID	(-1ULL)
100 
101 typedef u_longlong_t	core_content_t;
102 
103 typedef struct corectl_content {
104 	core_content_t	ccc_content;
105 	kmutex_t	ccc_mtx;
106 	uint32_t	ccc_refcnt;
107 } corectl_content_t;
108 
109 typedef struct corectl_path {
110 	refstr_t	*ccp_path;
111 	kmutex_t	ccp_mtx;
112 	uint32_t	ccp_refcnt;
113 } corectl_path_t;
114 
115 #ifdef _KERNEL
116 
117 struct core_globals {
118 	kmutex_t		core_lock;
119 	refstr_t		*core_file;
120 	uint32_t		core_options;
121 	core_content_t		core_content;
122 	rlim64_t		core_rlimit;
123 	corectl_path_t		*core_default_path;
124 	corectl_content_t	*core_default_content;
125 };
126 
127 extern	zone_key_t	core_zone_key;
128 
129 extern void init_core(void);
130 extern void set_core_defaults(void);
131 
132 extern core_content_t corectl_content_value(corectl_content_t *);
133 extern void corectl_content_hold(corectl_content_t *);
134 extern void corectl_content_rele(corectl_content_t *);
135 
136 extern refstr_t *corectl_path_value(corectl_path_t *);
137 extern void corectl_path_hold(corectl_path_t *);
138 extern void corectl_path_rele(corectl_path_t *);
139 
140 #else	/* _KERNEL */
141 
142 extern	int	core_set_options(int);
143 extern	int	core_get_options(void);
144 extern	int	core_set_global_path(const char *, size_t);
145 extern	int	core_get_global_path(char *, size_t);
146 extern	int	core_set_default_path(const char *, size_t);
147 extern	int	core_get_default_path(char *, size_t);
148 extern	int	core_set_process_path(const char *, size_t, pid_t);
149 extern	int	core_get_process_path(char *, size_t, pid_t);
150 extern	int	core_set_global_content(const core_content_t *);
151 extern	int	core_get_global_content(core_content_t *);
152 extern	int	core_set_default_content(const core_content_t *);
153 extern	int	core_get_default_content(core_content_t *);
154 extern	int	core_set_process_content(const core_content_t *, pid_t);
155 extern	int	core_get_process_content(core_content_t *, pid_t);
156 
157 #endif	/* _KERNEL */
158 
159 #ifdef	__cplusplus
160 }
161 #endif
162 
163 #endif	/* _SYS_CORECTL_H */
164