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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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e5150447d7
family of syscalls is impossible to write in a way that's portable and correct. On some targets (eg x86-linux) you need to do sys_stat64 and receive the results in a 'struct vki_stat64'. But on other targets (eg amd64-linux) neither sys_stat64 nor 'struct vki_stat64' exist. This commit adds a new type, 'struct vg_stat', which contains 64 bit fields in all the right places, and makes VG_(stat) and VG_(fstat) use it. This means callers to the two functions no longer need to worry about the is-it-64-bit-clean-or-not question, since these routines reformat the received data into a'struct vg_stat'. Kind of like what glibc must have been doing for decades. This (indirectly) fixes a bug on x86-linux, in which m_debuginfo would sometimes fail to read debug info, due to VG_(di_notify_mmap) using VG_(stat) (hence sys_stat) on the file, which failed, and when in fact it should have used sys_stat64. Bug reported and tracked down by Marc-Oliver Straub. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@8522
98 lines
3.9 KiB
C
98 lines
3.9 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- File/socket-related libc stuff. pub_core_libcfile.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) 2000-2008 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, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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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_LIBCFILE_H
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#define __PUB_CORE_LIBCFILE_H
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//--------------------------------------------------------------------
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// PURPOSE: This module contains all the libc code that relates to
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// files and sockets: opening, reading, writing, etc.
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// To use, you must first include: pub_core_vki.h
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//--------------------------------------------------------------------
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#include "pub_tool_libcfile.h"
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/* Move an fd into the Valgrind-safe range */
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extern Int VG_(safe_fd) ( Int oldfd );
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extern Int VG_(fcntl) ( Int fd, Int cmd, Int arg );
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/* Convert an fd into a filename */
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extern Bool VG_(resolve_filename) ( Int fd, HChar* buf, Int n_buf );
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/* Return the size of a file, or -1 in case of error */
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extern Long VG_(fsize) ( Int fd );
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/* Is the file a directory? */
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extern Bool VG_(is_dir) ( HChar* f );
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/* Default destination port to be used in logging over a network, if
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none specified. */
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#define VG_CLO_DEFAULT_LOGPORT 1500
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extern UInt VG_(htonl) ( UInt x );
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extern UInt VG_(ntohl) ( UInt x );
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extern UShort VG_(htons) ( UShort x );
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extern UShort VG_(ntohs) ( UShort x );
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extern Int VG_(write_socket)( Int sd, void *msg, Int count );
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extern Int VG_(connect_via_socket)( UChar* str );
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extern Int VG_(getsockname) ( Int sd, struct vki_sockaddr *name, Int *namelen );
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extern Int VG_(getpeername) ( Int sd, struct vki_sockaddr *name, Int *namelen );
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extern Int VG_(getsockopt) ( Int sd, Int level, Int optname, void *optval,
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Int *optlen );
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extern Int VG_(access) ( HChar* path, Bool irusr, Bool iwusr, Bool ixusr );
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/* Is the file executable? Returns: 0 = success, non-0 is failure */
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extern Int VG_(check_executable)(/*OUT*/Bool* is_setuid,
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HChar* f, Bool allow_setuid);
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extern SysRes VG_(pread) ( Int fd, void* buf, Int count, Int offset );
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/* Create and open (-rw------) a tmp file name incorporating said arg.
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Returns -1 on failure, else the fd of the file. If fullname is
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non-NULL, the file's name is written into it. The number of bytes
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written is guaranteed not to exceed 64+strlen(part_of_name). */
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extern Int VG_(mkstemp) ( HChar* part_of_name, /*OUT*/HChar* fullname );
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/* Record the process' working directory at startup. Is intended to
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be called exactly once, at startup, before the working directory
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changes. Return True for success, False for failure, so that the
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caller can bomb out suitably without creating module cycles if
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there is a problem. The saved value can later be acquired by
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calling VG_(get_startup_wd) (in pub_tool_libcfile.h). */
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extern Bool VG_(record_startup_wd) ( void );
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#endif // __PUB_CORE_LIBCFILE_H
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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