mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
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ab2599f4cf
(a) the 2nd argument must not be NULL
This was true anyhow and requiring it allows us to simplify the function
by eliminating the local buffer.
(b) the memory pointed to by the 2nd argument is always initialised
In the past the output file name was not initialised in case VG_(open)
failed 10 times in a row. The call sites in m_main.c and m_gdbserver/target.c
were reading the uninitialised filename unconditionally. This was spotted
by IBM's BEAM checker.
Fix call sites, eliminate some magic constants along the way.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14706
116 lines
4.8 KiB
C
116 lines
4.8 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) 2000-2013 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, Addr arg );
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/* Convert an fd into a filename */
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extern Bool VG_(resolve_filename) ( Int fd, HChar** 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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/* Lookup an extended attribute for a file */
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extern SysRes VG_(getxattr) ( const HChar* file_name, const HChar* attr_name,
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Addr attr_value, SizeT attr_value_len );
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/* Is the file a directory? */
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extern Bool VG_(is_dir) ( const 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 Int VG_(connect_via_socket)( const HChar* str );
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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_(socket) ( Int domain, Int type, Int protocol );
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extern Int VG_(write_socket)( Int sd, const void *msg, Int count );
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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,
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void *optval, Int *optlen );
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extern Int VG_(setsockopt) ( Int sd, Int level, Int optname,
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void *optval, Int optlen );
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extern Int VG_(access) ( const HChar* path, Bool irusr, Bool iwusr,
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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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const HChar* f, Bool allow_setuid);
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/* DDD: Note this moves (or at least, is believed to move) the file
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pointer on Linux but doesn't on Darwin. This inconsistency should
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be fixed. (In other words, why isn't the Linux version implemented
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in terms of pread()?) */
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extern SysRes VG_(pread) ( Int fd, void* buf, Int count, OffT offset );
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/* Size of fullname buffer needed for a call to VG_(mkstemp) with
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part_of_name having the given part_of_name_len. */
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extern SizeT VG_(mkstemp_fullname_bufsz) ( SizeT part_of_name_len );
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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. The file name is
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written to the memory pointed to be fullname. The number of bytes written
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is equal to VG_(mkstemp_fullname_bufsz)(VG_(strlen)(part_of_name)). */
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extern Int VG_(mkstemp) ( const 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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