1
2/*--------------------------------------------------------------------*/
3/*--- File/socket-related libc stuff.          pub_core_libcfile.h ---*/
4/*--------------------------------------------------------------------*/
5
6/*
7   This file is part of Valgrind, a dynamic binary instrumentation
8   framework.
9
10   Copyright (C) 2000-2013 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_LIBCFILE_H
32#define __PUB_CORE_LIBCFILE_H
33
34//--------------------------------------------------------------------
35// PURPOSE: This module contains all the libc code that relates to
36// files and sockets:  opening, reading, writing, etc.
37// To use, you must first include: pub_core_vki.h
38//--------------------------------------------------------------------
39
40#include "pub_tool_libcfile.h"
41
42/* Move an fd into the Valgrind-safe range */
43extern Int VG_(safe_fd) ( Int oldfd );
44extern Int VG_(fcntl)   ( Int fd, Int cmd, Addr arg );
45
46/* Convert an fd into a filename */
47extern Bool VG_(resolve_filename) ( Int fd, HChar* buf, Int n_buf );
48
49/* Return the size of a file, or -1 in case of error */
50extern Long VG_(fsize) ( Int fd );
51
52/* Lookup an extended attribute for a file */
53extern SysRes VG_(getxattr) ( const HChar* file_name, const HChar* attr_name, Addr attr_value, SizeT attr_value_len );
54
55/* Is the file a directory? */
56extern Bool VG_(is_dir) ( const HChar* f );
57
58/* Default destination port to be used in logging over a network, if
59   none specified. */
60#define VG_CLO_DEFAULT_LOGPORT 1500
61
62extern Int VG_(connect_via_socket)( const HChar* str );
63
64extern UInt   VG_(htonl) ( UInt x );
65extern UInt   VG_(ntohl) ( UInt x );
66extern UShort VG_(htons) ( UShort x );
67extern UShort VG_(ntohs) ( UShort x );
68
69extern Int VG_(socket) ( Int domain, Int type, Int protocol );
70
71extern Int VG_(write_socket)( Int sd, const void *msg, Int count );
72extern Int VG_(getsockname) ( Int sd, struct vki_sockaddr *name, Int *namelen );
73extern Int VG_(getpeername) ( Int sd, struct vki_sockaddr *name, Int *namelen );
74extern Int VG_(getsockopt)  ( Int sd, Int level, Int optname,
75                              void *optval, Int *optlen );
76extern Int VG_(setsockopt)  ( Int sd, Int level, Int optname,
77                              void *optval, Int optlen );
78
79extern Int VG_(access) ( const HChar* path, Bool irusr, Bool iwusr,
80                                            Bool ixusr );
81
82/* Is the file executable?  Returns: 0 = success, non-0 is failure */
83extern Int VG_(check_executable)(/*OUT*/Bool* is_setuid,
84                                 const HChar* f, Bool allow_setuid);
85
86/* DDD: Note this moves (or at least, is believed to move) the file
87   pointer on Linux but doesn't on Darwin.  This inconsistency should
88   be fixed.  (In other words, why isn't the Linux version implemented
89   in terms of pread()?) */
90extern SysRes VG_(pread) ( Int fd, void* buf, Int count, OffT offset );
91
92/* Size of fullname buffer needed for a call to VG_(mkstemp) with
93   part_of_name having the given part_of_name_len. */
94extern SizeT VG_(mkstemp_fullname_bufsz) ( SizeT part_of_name_len );
95
96/* Create and open (-rw------) a tmp file name incorporating said arg.
97   Returns -1 on failure, else the fd of the file.  If fullname is
98   non-NULL, the file's name is written into it.  The number of bytes
99   written is equal to VG_(mkstemp_fullname_bufsz)(part_of_name). */
100extern Int VG_(mkstemp) ( HChar* part_of_name, /*OUT*/HChar* fullname );
101
102/* Record the process' working directory at startup.  Is intended to
103   be called exactly once, at startup, before the working directory
104   changes.  Return True for success, False for failure, so that the
105   caller can bomb out suitably without creating module cycles if
106   there is a problem.  The saved value can later be acquired by
107   calling VG_(get_startup_wd) (in pub_tool_libcfile.h). */
108extern Bool VG_(record_startup_wd) ( void );
109
110#endif   // __PUB_CORE_LIBCFILE_H
111
112/*--------------------------------------------------------------------*/
113/*--- end                                                          ---*/
114/*--------------------------------------------------------------------*/
115