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1 
2 /*--------------------------------------------------------------------*/
3 /*--- Process-related libc stuff.              pub_core_libcproc.h ---*/
4 /*--------------------------------------------------------------------*/
5 
6 /*
7    This file is part of Valgrind, a dynamic binary instrumentation
8    framework.
9 
10    Copyright (C) 2000-2017 Julian Seward
11       jseward@acm.org
12 
13    This program is free software; you can redistribute it and/or
14    modify it under the terms of the GNU General Public License as
15    published by the Free Software Foundation; either version 2 of the
16    License, or (at your option) any later version.
17 
18    This program is distributed in the hope that it will be useful, but
19    WITHOUT ANY WARRANTY; without even the implied warranty of
20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21    General Public License for more details.
22 
23    You should have received a copy of the GNU General Public License
24    along with this program; if not, write to the Free Software
25    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
26    02111-1307, USA.
27 
28    The GNU General Public License is contained in the file COPYING.
29 */
30 
31 #ifndef __PUB_CORE_LIBCPROC_H
32 #define __PUB_CORE_LIBCPROC_H
33 
34 //--------------------------------------------------------------------
35 // PURPOSE: This module contains libc code related to the process.
36 // It's a bit of a mixed bag.
37 //--------------------------------------------------------------------
38 
39 #include "config.h"           // Crucial: ensure we get ENABLE_INNER
40 #include "pub_tool_libcproc.h"
41 
42 /* The directory we look for all our auxiliary files in.  Useful for
43    running Valgrind out of a build tree without having to do "make
44    install".  Inner valgrinds require a different lib variable, else
45    they end up picking up .so's etc intended for the outer
46    valgrind. */
47 #ifdef ENABLE_INNER
48 #  define VALGRIND_LIB     "VALGRIND_LIB_INNER"
49 #else
50 #  define VALGRIND_LIB     "VALGRIND_LIB"
51 #endif
52 
53 /* Additional command-line arguments; they are overridden by actual
54    command-line option.  Each argument is separated by spaces.  There
55    is no quoting mechanism.  */
56 #define VALGRIND_OPTS    "VALGRIND_OPTS"
57 
58 /* The full name of Valgrind's stage1 (launcher) executable.  This is
59    set by stage1 and read by stage2, and is used for recursive
60    invocations of Valgrind on child processes.
61 
62    For self-hosting, the inner and outer Valgrinds must use different
63    names to avoid collisions.  */
64 #ifdef ENABLE_INNER
65 #  define VALGRIND_LAUNCHER  "VALGRIND_LAUNCHER_INNER"
66 #else
67 #  define VALGRIND_LAUNCHER  "VALGRIND_LAUNCHER"
68 #endif
69 
70 
71 // Environment manipulations
72 extern HChar **VG_(env_setenv)   ( HChar ***envp, const HChar* varname,
73                                    const HChar *val );
74 extern void    VG_(env_unsetenv) ( HChar **env, const HChar *varname,
75                                    void (*free_fn) ( void *) );
76 extern void    VG_(env_remove_valgrind_env_stuff) ( HChar** env,
77                                                     Bool ro_strings,
78                                                     void (*free_fn) (void *) );
79 extern HChar **VG_(env_clone)    ( HChar **env_clone );
80 
81 // misc
82 extern Int  VG_(getgroups)( Int size, UInt* list );
83 extern Int  VG_(ptrace)( Int request, Int pid, void *addr, void *data );
84 
85 // atfork
86 extern void VG_(do_atfork_pre)    ( ThreadId tid );
87 extern void VG_(do_atfork_parent) ( ThreadId tid );
88 extern void VG_(do_atfork_child)  ( ThreadId tid );
89 
90 // icache invalidation
91 extern void VG_(invalidate_icache) ( void *ptr, SizeT nbytes );
92 
93 // dcache flushing
94 extern void VG_(flush_dcache) ( void *ptr, SizeT nbytes );
95 
96 #endif   // __PUB_CORE_LIBCPROC_H
97 
98 /*--------------------------------------------------------------------*/
99 /*--- end                                                          ---*/
100 /*--------------------------------------------------------------------*/
101