coregrind/pub_core_libcfile.h

   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) 2000-2017 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, see <http://www.gnu.org/licenses/>.
  25
  26    The GNU General Public License is contained in the file COPYING.
  27 */
  28
  29 #ifndef __PUB_CORE_LIBCFILE_H
  30 #define __PUB_CORE_LIBCFILE_H
  31
  32 //--------------------------------------------------------------------
  33 // PURPOSE: This module contains all the libc code that relates to
  34 // files and sockets:  opening, reading, writing, etc.
  35 // To use, you must first include: pub_core_vki.h
  36 //--------------------------------------------------------------------
  37
  38 #include "pub_tool_libcfile.h"
  39
  40 /* Move an fd into the Valgrind-safe range */
  41 extern Int VG_(safe_fd) ( Int oldfd );
  42 extern Int VG_(fcntl)   ( Int fd, Int cmd, Addr arg );
  43
  44 /* Convert an fd into a filename */
  45 extern Bool VG_(resolve_filename) ( Int fd, const HChar** buf );
  46
  47 /* Return the size of a file, or -1 in case of error */
  48 extern Long VG_(fsize) ( Int fd );
  49
  50 /* Lookup an extended attribute for a file */
  51 extern SysRes VG_(getxattr) ( const HChar* file_name, const HChar* attr_name,
  52                               Addr attr_value, SizeT attr_value_len );
  53
  54 /* Is the file a directory? */
  55 extern Bool VG_(is_dir) ( const HChar* f );
  56
  57 /* Default destination port to be used in logging over a network, if
  58    none specified. */
  59 #define VG_CLO_DEFAULT_LOGPORT 1500
  60
  61 extern Int VG_(connect_via_socket)( const HChar* str );
  62
  63 extern UInt   VG_(htonl) ( UInt x );
  64 extern UInt   VG_(ntohl) ( UInt x );
  65 extern UShort VG_(htons) ( UShort x );
  66 extern UShort VG_(ntohs) ( UShort x );
  67
  68 extern Int VG_(socket) ( Int domain, Int type, Int protocol );
  69
  70 extern Int VG_(write_socket)( Int sd, const void *msg, Int count );
  71 extern Int VG_(getsockname) ( Int sd, struct vki_sockaddr *name, Int *namelen );
  72 extern Int VG_(getpeername) ( Int sd, struct vki_sockaddr *name, Int *namelen );
  73 extern Int VG_(getsockopt)  ( Int sd, Int level, Int optname,
  74                               void *optval, Int *optlen );
  75 extern Int VG_(setsockopt)  ( Int sd, Int level, Int optname,
  76                               void *optval, Int optlen );
  77
  78 extern Int VG_(access) ( const HChar* path, Bool irusr, Bool iwusr,
  79                                             Bool ixusr );
  80
  81 /* Is the file executable?  Returns: 0 = success, non-0 is failure */
  82 extern Int VG_(check_executable)(/*OUT*/Bool* is_setuid,
  83                                  const HChar* f, Bool allow_setuid);
  84
  85 /* DDD: Note this moves (or at least, is believed to move) the file
  86    pointer on Linux but doesn't on Darwin.  This inconsistency should
  87    be fixed.  (In other words, why isn't the Linux version implemented
  88    in terms of pread()?) */
  89 extern SysRes VG_(pread) ( Int fd, void* buf, Int count, OffT offset );
  90
  91 /* Size of fullname buffer needed for a call to VG_(mkstemp) with
  92    part_of_name having the given part_of_name_len. */
  93 extern SizeT VG_(mkstemp_fullname_bufsz) ( SizeT part_of_name_len );
  94
  95 /* Create and open (-rw------) a tmp file name incorporating said arg.
  96    Returns -1 on failure, else the fd of the file.  The file name is
  97    written to the memory pointed to be fullname. The number of bytes written
  98    is equal to VG_(mkstemp_fullname_bufsz)(VG_(strlen)(part_of_name)). */
  99 extern Int VG_(mkstemp) ( const HChar* part_of_name, /*OUT*/HChar* fullname );
 100
 101 /* Record the process' working directory at startup.  Is intended to
 102    be called exactly once, at startup, before the working directory
 103    changes.  The saved value can later be acquired by calling
 104    VG_(get_startup_wd) (in pub_tool_libcfile.h).  Note that might
 105    return if the working directory couldn't be found.  */
 106 extern void VG_(record_startup_wd) ( void );
 107
 108 #endif   // __PUB_CORE_LIBCFILE_H
 109
 110 /*--------------------------------------------------------------------*/
 111 /*--- end                                                          ---*/
 112 /*--------------------------------------------------------------------*/