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 * $FreeBSD$ 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 42 typedef 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 52 typedef struct rd_agent { 53 struct proc_handle *rda_php; 54 uintptr_t rda_addr; /* address of r_debug_state */ 55 } rd_agent_t; 56 57 typedef struct rd_loadobj { 58 uintptr_t rdl_saddr; /* start address */ 59 uintptr_t rdl_eaddr; /* end address */ 60 uint32_t rdl_offset; 61 uint8_t rdl_prot; 62 #define RD_RDL_R 0x01 63 #define RD_RDL_W 0x02 64 #define RD_RDL_X 0x04 65 enum { 66 RDL_TYPE_NONE = 0, 67 RDL_TYPE_DEF, 68 RDL_TYPE_VNODE, 69 RDL_TYPE_SWAP, 70 RDL_TYPE_DEV, 71 /* XXX some types missing */ 72 RDL_TYPE_UNKNOWN = 255 73 } rdl_type; 74 unsigned char rdl_path[PATH_MAX]; 75 } rd_loadobj_t; 76 77 typedef enum { 78 RD_NONE = 0, 79 RD_PREINIT, 80 RD_POSTINIT, 81 RD_DLACTIVITY 82 } rd_event_e; 83 84 typedef enum { 85 RD_NOTIFY_BPT, 86 RD_NOTIFY_AUTOBPT, 87 RD_NOTIFY_SYSCALL 88 } rd_notify_e; 89 90 typedef struct rd_notify { 91 rd_notify_e type; 92 union { 93 uintptr_t bptaddr; 94 long syscallno; 95 } u; 96 } rd_notify_t; 97 98 typedef enum { 99 RD_NOSTATE = 0, 100 RD_CONSISTENT, 101 RD_ADD, 102 RD_DELETE 103 } rd_state_e; 104 105 typedef struct rd_event_msg { 106 rd_event_e type; 107 union { 108 rd_state_e state; 109 } u; 110 } rd_event_msg_t; 111 112 typedef enum { 113 RD_RESOLVE_NONE, 114 RD_RESOLVE_STEP, 115 RD_RESOLVE_TARGET, 116 RD_RESOLVE_TARGET_STEP 117 } rd_skip_e; 118 119 typedef struct rd_plt_info { 120 rd_skip_e pi_skip_method; 121 long pi_nstep; 122 uintptr_t pi_target; 123 uintptr_t pi_baddr; 124 unsigned int pi_flags; 125 } rd_plt_info_t; 126 127 #define RD_FLG_PI_PLTBOUND 0x0001 128 129 __BEGIN_DECLS 130 131 struct proc_handle; 132 void rd_delete(rd_agent_t *); 133 const char *rd_errstr(rd_err_e); 134 rd_err_e rd_event_addr(rd_agent_t *, rd_event_e, rd_notify_t *); 135 rd_err_e rd_event_enable(rd_agent_t *, int); 136 rd_err_e rd_event_getmsg(rd_agent_t *, rd_event_msg_t *); 137 rd_err_e rd_init(int); 138 typedef int rl_iter_f(const rd_loadobj_t *, void *); 139 rd_err_e rd_loadobj_iter(rd_agent_t *, rl_iter_f *, void *); 140 void rd_log(const int); 141 rd_agent_t *rd_new(struct proc_handle *); 142 rd_err_e rd_objpad_enable(rd_agent_t *, size_t); 143 struct proc; 144 rd_err_e rd_plt_resolution(rd_agent_t *, uintptr_t, struct proc *, 145 uintptr_t, rd_plt_info_t *); 146 rd_err_e rd_reset(rd_agent_t *); 147 148 __END_DECLS 149 150 #endif /* _RTLD_DB_H_ */ 151