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3960
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1 /*
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2 * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef _LIBPROC_IMPL_H_
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26 #define _LIBPROC_IMPL_H_
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27
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28 #include <unistd.h>
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29 #include <limits.h>
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30 #include "libproc.h"
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31 #include "symtab.h"
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32
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33 // data structures in this file mimic those of Solaris 8.0 - libproc's Pcontrol.h
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34
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35 #define BUF_SIZE (PATH_MAX + NAME_MAX + 1)
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36
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37 // list of shared objects
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38 typedef struct lib_info {
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39 char name[BUF_SIZE];
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40 uintptr_t base;
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41 struct symtab* symtab;
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42 int fd; // file descriptor for lib
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43 struct lib_info* next;
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44 } lib_info;
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45
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46 // list of threads
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47 typedef struct thread_info {
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48 lwpid_t lwp_id;
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49 pthread_t pthread_id; // not used cores, always -1
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50 struct reg regs; // not for process, core uses for caching regset
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51 struct thread_info* next;
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52 } thread_info;
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53
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54 // list of virtual memory maps
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55 typedef struct map_info {
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56 int fd; // file descriptor
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57 off_t offset; // file offset of this mapping
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58 uintptr_t vaddr; // starting virtual address
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59 size_t memsz; // size of the mapping
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60 struct map_info* next;
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61 } map_info;
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62
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63 // vtable for ps_prochandle
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64 typedef struct ps_prochandle_ops {
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65 // "derived class" clean-up
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66 void (*release)(struct ps_prochandle* ph);
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67 // read from debuggee
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68 bool (*p_pread)(struct ps_prochandle *ph,
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69 uintptr_t addr, char *buf, size_t size);
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70 // write into debuggee
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71 bool (*p_pwrite)(struct ps_prochandle *ph,
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72 uintptr_t addr, const char *buf , size_t size);
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73 // get integer regset of a thread
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74 bool (*get_lwp_regs)(struct ps_prochandle* ph, lwpid_t lwp_id, struct reg* regs);
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75 // get info on thread
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76 bool (*get_lwp_info)(struct ps_prochandle *ph, lwpid_t lwp_id, void *linfo);
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77 } ps_prochandle_ops;
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78
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79 // the ps_prochandle
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80
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81 struct core_data {
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82 int core_fd; // file descriptor of core file
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83 int exec_fd; // file descriptor of exec file
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84 int interp_fd; // file descriptor of interpreter (ld-elf.so.1)
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85 // part of the class sharing workaround
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86 int classes_jsa_fd; // file descriptor of class share archive
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87 uintptr_t dynamic_addr; // address of dynamic section of a.out
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88 uintptr_t ld_base_addr; // base address of ld.so
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89 size_t num_maps; // number of maps.
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90 map_info* maps; // maps in a linked list
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91 // part of the class sharing workaround
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92 map_info* class_share_maps;// class share maps in a linked list
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93 map_info** map_array; // sorted (by vaddr) array of map_info pointers
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94 };
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95
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96 struct ps_prochandle {
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97 ps_prochandle_ops* ops; // vtable ptr
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98 pid_t pid;
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99 int num_libs;
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100 lib_info* libs; // head of lib list
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101 lib_info* lib_tail; // tail of lib list - to append at the end
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102 int num_threads;
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103 thread_info* threads; // head of thread list
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104 struct core_data* core; // data only used for core dumps, NULL for process
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105 };
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106
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107 int pathmap_open(const char* name);
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108
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109 void print_debug(const char* format,...);
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110 bool is_debug();
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111
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112 typedef bool (*thread_info_callback)(struct ps_prochandle* ph, pthread_t pid, lwpid_t lwpid);
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113
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114 // reads thread info using libthread_db and calls above callback for each thread
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115 bool read_thread_info(struct ps_prochandle* ph, thread_info_callback cb);
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116
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117 // adds a new shared object to lib list, returns NULL on failure
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118 lib_info* add_lib_info(struct ps_prochandle* ph, const char* libname, uintptr_t base);
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119
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120 // adds a new shared object to lib list, supply open lib file descriptor as well
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121 lib_info* add_lib_info_fd(struct ps_prochandle* ph, const char* libname, int fd,
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122 uintptr_t base);
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123
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124 // adds a new thread to threads list, returns NULL on failure
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125 thread_info* add_thread_info(struct ps_prochandle* ph, pthread_t pthread_id, lwpid_t lwp_id);
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126
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127 // a test for ELF signature without using libelf
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128 bool is_elf_file(int fd);
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129
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130 #endif //_LIBPROC_IMPL_H_
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