freebsd-dev/lib/librtld_db/rtld_db.h
Mark Johnston b252f278ea Handle the different event types properly in rd_event_addr(). In particular,
with r265456 _r_debug_postinit can be used for RD_POSTINIT events. rtld(1)
uses r_debug_state for dl state transitions, so we use its address for
RD_DLACTIVITY events.

MFC after:	2 weeks
2014-05-08 03:26:25 +00:00

153 lines
3.7 KiB
C

/*
* Copyright (c) 2010 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Rui Paulo under sponsorship from the
* FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _RTLD_DB_H_
#define _RTLD_DB_H_
#include <sys/param.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#define RD_VERSION 1
typedef enum {
RD_OK,
RD_ERR,
RD_DBERR,
RD_NOCAPAB,
RD_NODYNAM,
RD_NOBASE,
RD_NOMAPS
} rd_err_e;
typedef struct rd_agent {
struct proc_handle *rda_php;
uintptr_t rda_dlactivity_addr;
uintptr_t rda_preinit_addr;
uintptr_t rda_postinit_addr;
} rd_agent_t;
typedef struct rd_loadobj {
uintptr_t rdl_saddr; /* start address */
uintptr_t rdl_eaddr; /* end address */
uint32_t rdl_offset;
uint8_t rdl_prot;
#define RD_RDL_R 0x01
#define RD_RDL_W 0x02
#define RD_RDL_X 0x04
enum {
RDL_TYPE_NONE = 0,
RDL_TYPE_DEF,
RDL_TYPE_VNODE,
RDL_TYPE_SWAP,
RDL_TYPE_DEV,
/* XXX some types missing */
RDL_TYPE_UNKNOWN = 255
} rdl_type;
unsigned char rdl_path[PATH_MAX];
} rd_loadobj_t;
typedef enum {
RD_NONE = 0,
RD_PREINIT,
RD_POSTINIT,
RD_DLACTIVITY
} rd_event_e;
typedef enum {
RD_NOTIFY_BPT,
RD_NOTIFY_AUTOBPT,
RD_NOTIFY_SYSCALL
} rd_notify_e;
typedef struct rd_notify {
rd_notify_e type;
union {
uintptr_t bptaddr;
long syscallno;
} u;
} rd_notify_t;
typedef enum {
RD_NOSTATE = 0,
RD_CONSISTENT,
RD_ADD,
RD_DELETE
} rd_state_e;
typedef struct rd_event_msg {
rd_event_e type;
union {
rd_state_e state;
} u;
} rd_event_msg_t;
typedef enum {
RD_RESOLVE_NONE,
RD_RESOLVE_STEP,
RD_RESOLVE_TARGET,
RD_RESOLVE_TARGET_STEP
} rd_skip_e;
typedef struct rd_plt_info {
rd_skip_e pi_skip_method;
long pi_nstep;
uintptr_t pi_target;
uintptr_t pi_baddr;
unsigned int pi_flags;
} rd_plt_info_t;
#define RD_FLG_PI_PLTBOUND 0x0001
__BEGIN_DECLS
struct proc_handle;
void rd_delete(rd_agent_t *);
const char *rd_errstr(rd_err_e);
rd_err_e rd_event_addr(rd_agent_t *, rd_event_e, rd_notify_t *);
rd_err_e rd_event_enable(rd_agent_t *, int);
rd_err_e rd_event_getmsg(rd_agent_t *, rd_event_msg_t *);
rd_err_e rd_init(int);
typedef int rl_iter_f(const rd_loadobj_t *, void *);
rd_err_e rd_loadobj_iter(rd_agent_t *, rl_iter_f *, void *);
void rd_log(const int);
rd_agent_t *rd_new(struct proc_handle *);
rd_err_e rd_objpad_enable(rd_agent_t *, size_t);
struct proc;
rd_err_e rd_plt_resolution(rd_agent_t *, uintptr_t, struct proc *,
uintptr_t, rd_plt_info_t *);
rd_err_e rd_reset(rd_agent_t *);
__END_DECLS
#endif /* _RTLD_DB_H_ */