mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-04 02:18:37 +00:00
9f27d8fbc7
There is quite a lot of stuff here. The problem is that setproctitle and kern.ps_strings were using the Valgrind host auxv rather than the guest. The proposed patch would have just ignored those memory ranges. I've gone a fair bit further than that 1. refactored the initimg code for building the client auxv. Previously we were simply ignoring any non-scalar entries. Now we copy most of thse as well. That means that 'strtab' built on the client stack no longet only contains strings, at can also now contain binary structures. Note I was a bit concerned that there may be some alignment issues, but I haven't seen any problems so far. 2. Added intercepts to sysctl and sysctlbyname for kern.ps_strings, then find AT_PS_STRINGS from the client auxv that is now usable from step 1. 3. Some refactoring of sysctl and sysctlbyname syscall wrappers. More to do there! 4. Added a setproctitle testcase (that also tests the sysctls). 5. Updated the auxv testcase now that more AT_* entries are handled.
115 lines
4.0 KiB
C
115 lines
4.0 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- Process-related libc stuff. pub_core_libcproc.h ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, a dynamic binary instrumentation
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framework.
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Copyright (C) 2000-2017 Julian Seward
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jseward@acm.org
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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The GNU General Public License is contained in the file COPYING.
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*/
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#ifndef __PUB_CORE_LIBCPROC_H
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#define __PUB_CORE_LIBCPROC_H
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//--------------------------------------------------------------------
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// PURPOSE: This module contains libc code related to the process.
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// It's a bit of a mixed bag.
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//--------------------------------------------------------------------
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#include "config.h" // Crucial: ensure we get ENABLE_INNER
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#include "pub_tool_libcproc.h"
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/* The directory we look for all our auxiliary files in. Useful for
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running Valgrind out of a build tree without having to do "make
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install". Inner valgrinds require a different lib variable, else
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they end up picking up .so's etc intended for the outer
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valgrind. */
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#ifdef ENABLE_INNER
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# define VALGRIND_LIB "VALGRIND_LIB_INNER"
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#else
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# define VALGRIND_LIB "VALGRIND_LIB"
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#endif
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/* Additional command-line arguments; they are overridden by actual
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command-line option. Each argument is separated by spaces. There
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is no quoting mechanism. */
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#define VALGRIND_OPTS "VALGRIND_OPTS"
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/* The full name of Valgrind's stage1 (launcher) executable. This is
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set by stage1 and read by stage2, and is used for recursive
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invocations of Valgrind on child processes.
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For self-hosting, the inner and outer Valgrinds must use different
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names to avoid collisions. */
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#ifdef ENABLE_INNER
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# define VALGRIND_LAUNCHER "VALGRIND_LAUNCHER_INNER"
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#else
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# define VALGRIND_LAUNCHER "VALGRIND_LAUNCHER"
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#endif
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// Environment manipulations
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extern HChar **VG_(env_setenv) ( HChar ***envp, const HChar* varname,
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const HChar *val );
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extern void VG_(env_unsetenv) ( HChar **env, const HChar *varname,
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void (*free_fn) ( void *) );
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extern void VG_(env_remove_valgrind_env_stuff) ( HChar** env,
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Bool ro_strings,
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void (*free_fn) (void *) );
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extern HChar **VG_(env_clone) ( HChar **env_clone );
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// misc
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extern Int VG_(getgroups)( Int size, UInt* list );
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extern Int VG_(ptrace)( Int request, Int pid, void *addr, void *data );
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// atfork
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extern void VG_(do_atfork_pre) ( ThreadId tid );
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extern void VG_(do_atfork_parent) ( ThreadId tid );
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extern void VG_(do_atfork_child) ( ThreadId tid );
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#if defined(VGO_freebsd)
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// sysctl, modfind
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extern Int VG_(sysctlbyname)(const HChar *name, void *oldp, SizeT *oldlenp, const void *newp, SizeT newlen);
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extern Int VG_(getosreldate)(void);
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extern Bool VG_(is32on64)(void);
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struct auxv {
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Word a_type;
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union {
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void *a_ptr;
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Word a_val;
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} u;
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};
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#endif
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// icache invalidation
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extern void VG_(invalidate_icache) ( void *ptr, SizeT nbytes );
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// dcache flushing
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extern void VG_(flush_dcache) ( void *ptr, SizeT nbytes );
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#endif // __PUB_CORE_LIBCPROC_H
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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