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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
91 lines
3.3 KiB
C
91 lines
3.3 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- File/socket-related libc stuff. pub_tool_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_TOOL_LIBCFILE_H
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#define __PUB_TOOL_LIBCFILE_H
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/* ---------------------------------------------------------------------
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File-related functions.
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------------------------------------------------------------------ */
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/* To use this file you must first include pub_tool_vki.h. */
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/* Note that VG_(stat) and VG_(fstat) write to a 'struct vg_stat*' and
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not a 'struct vki_stat*' or a 'struct vki_stat64*'. 'struct
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vg_stat*' is not the same as either of the vki_ versions. No
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specific vki_stat{,64} kernel structure will work and is
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consistently available on different architectures on Linux, so we
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have to use this 'struct vg_stat' impedance-matching type
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instead. */
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struct vg_stat {
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ULong st_dev;
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ULong st_ino;
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ULong st_nlink;
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UInt st_mode;
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UInt st_uid;
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UInt st_gid;
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ULong st_rdev;
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Long st_size;
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ULong st_blksize;
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ULong st_blocks;
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ULong st_atime;
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ULong st_atime_nsec;
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ULong st_mtime;
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ULong st_mtime_nsec;
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ULong st_ctime;
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ULong st_ctime_nsec;
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};
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extern SysRes VG_(open) ( const Char* pathname, Int flags, Int mode );
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extern void VG_(close) ( Int fd );
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extern Int VG_(read) ( Int fd, void* buf, Int count);
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extern Int VG_(write) ( Int fd, const void* buf, Int count);
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extern Int VG_(pipe) ( Int fd[2] );
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extern OffT VG_(lseek) ( Int fd, OffT offset, Int whence );
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extern SysRes VG_(stat) ( Char* file_name, struct vg_stat* buf );
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extern Int VG_(fstat) ( Int fd, struct vg_stat* buf );
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extern SysRes VG_(dup) ( Int oldfd );
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extern Int VG_(rename) ( Char* old_name, Char* new_name );
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extern Int VG_(unlink) ( Char* file_name );
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extern Int VG_(readlink)( Char* path, Char* buf, UInt bufsize );
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extern Int VG_(getdents)( UInt fd, struct vki_dirent *dirp, UInt count );
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/* Copy the working directory at startup into buf[0 .. size-1], or return
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False if buf is too small. */
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extern Bool VG_(get_startup_wd) ( Char* buf, SizeT size );
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#endif // __PUB_TOOL_LIBCFILE_H
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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