rtld_db.h revision 316713 
1/*-
2 * Copyright (c) 2010 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Rui Paulo under sponsorship from the
6 * FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/11/lib/librtld_db/rtld_db.h 316713 2017-04-11 17:36:19Z markj $
30 */
31
32#ifndef _RTLD_DB_H_
33#define _RTLD_DB_H_
34
35#include <sys/param.h>
36#include <sys/cdefs.h>
37#include <sys/types.h>
38
39
40#define	RD_VERSION	1
41
42typedef enum {
43	RD_OK,
44	RD_ERR,
45	RD_DBERR,
46	RD_NOCAPAB,
47	RD_NODYNAM,
48	RD_NOBASE,
49	RD_NOMAPS
50} rd_err_e;
51
52typedef struct rd_agent {
53	struct proc_handle *rda_php;
54	uintptr_t rda_dlactivity_addr;
55	uintptr_t rda_preinit_addr;
56	uintptr_t rda_postinit_addr;
57} rd_agent_t;
58
59typedef struct rd_loadobj {
60	uintptr_t	rdl_saddr;		/* start address */
61	uintptr_t	rdl_eaddr;		/* end address */
62	uint32_t	rdl_offset;
63	uint8_t		rdl_prot;
64#define RD_RDL_R	0x01
65#define RD_RDL_W	0x02
66#define RD_RDL_X	0x04
67	enum {
68		RDL_TYPE_NONE	= 0,
69		RDL_TYPE_DEF,
70		RDL_TYPE_VNODE,
71		RDL_TYPE_SWAP,
72		RDL_TYPE_DEV,
73		/* XXX some types missing */
74		RDL_TYPE_UNKNOWN = 255
75	} rdl_type;
76	unsigned char	rdl_path[PATH_MAX];
77} rd_loadobj_t;
78
79typedef enum {
80	RD_NONE = 0,
81	RD_PREINIT,
82	RD_POSTINIT,
83	RD_DLACTIVITY
84} rd_event_e;
85
86typedef enum {
87	RD_NOTIFY_BPT,
88	RD_NOTIFY_AUTOBPT,
89	RD_NOTIFY_SYSCALL
90} rd_notify_e;
91
92typedef struct rd_notify {
93	rd_notify_e type;
94	union {
95		uintptr_t bptaddr;
96		long      syscallno;
97	} u;
98} rd_notify_t;
99
100typedef enum {
101	RD_NOSTATE = 0,
102	RD_CONSISTENT,
103	RD_ADD,
104	RD_DELETE
105} rd_state_e;
106
107typedef struct rd_event_msg {
108	rd_event_e type;
109	union {
110		rd_state_e state;
111	} u;
112} rd_event_msg_t;
113
114typedef enum {
115	RD_RESOLVE_NONE,
116	RD_RESOLVE_STEP,
117	RD_RESOLVE_TARGET,
118	RD_RESOLVE_TARGET_STEP
119} rd_skip_e;
120
121typedef struct rd_plt_info {
122	rd_skip_e pi_skip_method;
123	long	  pi_nstep;
124	uintptr_t pi_target;
125	uintptr_t pi_baddr;
126	unsigned int pi_flags;
127} rd_plt_info_t;
128
129#define RD_FLG_PI_PLTBOUND	0x0001
130
131__BEGIN_DECLS
132
133struct proc_handle;
134void		rd_delete(rd_agent_t *);
135const char 	*rd_errstr(rd_err_e);
136rd_err_e	rd_event_addr(rd_agent_t *, rd_event_e, rd_notify_t *);
137rd_err_e	rd_event_enable(rd_agent_t *, int);
138rd_err_e	rd_event_getmsg(rd_agent_t *, rd_event_msg_t *);
139rd_err_e	rd_init(int);
140typedef int rl_iter_f(const rd_loadobj_t *, void *);
141rd_err_e	rd_loadobj_iter(rd_agent_t *, rl_iter_f *, void *);
142void		rd_log(const int);
143rd_agent_t 	*rd_new(struct proc_handle *);
144rd_err_e	rd_objpad_enable(rd_agent_t *, size_t);
145struct proc;
146rd_err_e	rd_plt_resolution(rd_agent_t *, uintptr_t, struct proc *,
147		    uintptr_t, rd_plt_info_t *);
148rd_err_e	rd_reset(rd_agent_t *);
149
150__END_DECLS
151
152#endif /* _RTLD_DB_H_ */
153