lib/libproc/libproc.h

   1 /*-
   2  * Copyright (c) 2010 The FreeBSD Foundation
   3  * Copyright (c) 2008 John Birrell (jb@freebsd.org)
   4  * All rights reserved.
   5  *
   6  * Portions of this software were developed by Rui Paulo under sponsorship
   7  * from the FreeBSD Foundation.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  * $FreeBSD$
  31  */
  32
  33 #ifndef _LIBPROC_H_
  34 #define _LIBPROC_H_
  35
  36 #include <gelf.h>
  37 #include <rtld_db.h>
  38 #include <limits.h>
  39
  40 struct ctf_file;
  41 struct proc_handle;
  42
  43 typedef void (*proc_child_func)(void *);
  44
  45 /* Values returned by proc_state(). */
  46 #define PS_IDLE         1
  47 #define PS_STOP         2
  48 #define PS_RUN          3
  49 #define PS_UNDEAD       4
  50 #define PS_DEAD         5
  51 #define PS_LOST         6
  52
  53 /* Reason values for proc_detach(). */
  54 #define PRELEASE_HANG   1
  55 #define PRELEASE_KILL   2
  56
  57 typedef struct prmap {
  58         uintptr_t       pr_vaddr;       /* Virtual address. */
  59         size_t          pr_size;        /* Mapping size in bytes */
  60         size_t          pr_offset;      /* Mapping offset in object */
  61         char            pr_mapname[PATH_MAX];   /* Mapping filename */
  62         uint8_t         pr_mflags;      /* Protection flags */
  63 #define MA_READ         0x01
  64 #define MA_WRITE        0x02
  65 #define MA_EXEC         0x04
  66 #define MA_COW          0x08
  67 #define MA_NEEDS_COPY   0x10
  68 #define MA_NOCOREDUMP   0x20
  69 } prmap_t;
  70
  71 typedef struct prsyminfo {
  72         u_int           prs_lmid;       /* Map id. */
  73         u_int           prs_id;         /* Symbol id. */
  74 } prsyminfo_t;
  75
  76 typedef int proc_map_f(void *, const prmap_t *, const char *);
  77 typedef int proc_sym_f(void *, const GElf_Sym *, const char *);
  78
  79 /* Values for ELF sections */
  80 #define PR_SYMTAB       1
  81 #define PR_DYNSYM       2
  82
  83 /* Values for the 'mask' parameter in the iteration functions */
  84 #define BIND_LOCAL      0x0001
  85 #define BIND_GLOBAL     0x0002
  86 #define BIND_WEAK       0x0004
  87 #define BIND_ANY        (BIND_LOCAL|BIND_GLOBAL|BIND_WEAK)
  88 #define TYPE_NOTYPE     0x0100
  89 #define TYPE_OBJECT     0x0200
  90 #define TYPE_FUNC       0x0400
  91 #define TYPE_SECTION    0x0800
  92 #define TYPE_FILE       0x1000
  93 #define TYPE_ANY        (TYPE_NOTYPE|TYPE_OBJECT|TYPE_FUNC|TYPE_SECTION|\
  94                          TYPE_FILE)
  95
  96 typedef enum {
  97         REG_PC,
  98         REG_SP,
  99         REG_RVAL1,
 100         REG_RVAL2
 101 } proc_reg_t;
 102
 103 #define SIG2STR_MAX     8
 104
 105 typedef struct lwpstatus {
 106         int pr_why;
 107 #define PR_REQUESTED    1
 108 #define PR_FAULTED      2
 109 #define PR_SYSENTRY     3
 110 #define PR_SYSEXIT      4
 111 #define PR_SIGNALLED    5
 112         int pr_what;
 113 #define FLTBPT          -1
 114 } lwpstatus_t;
 115
 116 #define PR_MODEL_ILP32  1
 117 #define PR_MODEL_LP64   2
 118
 119 /* Function prototype definitions. */
 120 __BEGIN_DECLS
 121
 122 prmap_t *proc_addr2map(struct proc_handle *, uintptr_t);
 123 prmap_t *proc_name2map(struct proc_handle *, const char *);
 124 char    *proc_objname(struct proc_handle *, uintptr_t, char *, size_t);
 125 prmap_t *proc_obj2map(struct proc_handle *, const char *);
 126 int     proc_iter_objs(struct proc_handle *, proc_map_f *, void *);
 127 int     proc_iter_symbyaddr(struct proc_handle *, const char *, int,
 128              int, proc_sym_f *, void *);
 129 int     proc_addr2sym(struct proc_handle *, uintptr_t, char *, size_t, GElf_Sym *);
 130 int     proc_attach(pid_t pid, int flags, struct proc_handle **pphdl);
 131 int     proc_continue(struct proc_handle *);
 132 int     proc_clearflags(struct proc_handle *, int);
 133 int     proc_create(const char *, char * const *, proc_child_func *, void *,
 134             struct proc_handle **);
 135 int     proc_detach(struct proc_handle *, int);
 136 int     proc_getflags(struct proc_handle *);
 137 int     proc_name2sym(struct proc_handle *, const char *, const char *,
 138             GElf_Sym *, prsyminfo_t *);
 139 struct ctf_file *proc_name2ctf(struct proc_handle *, const char *);
 140 int     proc_setflags(struct proc_handle *, int);
 141 int     proc_state(struct proc_handle *);
 142 int     proc_getmodel(struct proc_handle *);
 143 pid_t   proc_getpid(struct proc_handle *);
 144 int     proc_wstatus(struct proc_handle *);
 145 int     proc_getwstat(struct proc_handle *);
 146 char *  proc_signame(int, char *, size_t);
 147 int     proc_read(struct proc_handle *, void *, size_t, size_t);
 148 const lwpstatus_t *proc_getlwpstatus(struct proc_handle *);
 149 void    proc_free(struct proc_handle *);
 150 rd_agent_t *proc_rdagent(struct proc_handle *);
 151 void    proc_updatesyms(struct proc_handle *);
 152 int     proc_bkptset(struct proc_handle *, uintptr_t, unsigned long *);
 153 int     proc_bkptdel(struct proc_handle *, uintptr_t, unsigned long);
 154 void    proc_bkptregadj(unsigned long *);
 155 int     proc_bkptexec(struct proc_handle *, unsigned long);
 156 int     proc_regget(struct proc_handle *, proc_reg_t, unsigned long *);
 157 int     proc_regset(struct proc_handle *, proc_reg_t, unsigned long);
 158
 159 __END_DECLS
 160
 161 #endif /* !_LIBPROC_H_ */