mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-04 10:21:20 +00:00
be052139d6
At startup valgrind fetches the current working directory and stashes it away to be used later (in debug messages, read config files or create log files). But if the current working directory didn't exist (or there was some other error getting its path) then valgrind would go in an endless loop. This was caused by assuming that any error meant a larger buffer needed to be created to store the cwd path (ERANGE). However there could be other reasons calling getcwd failed. Fix this by only looping and resizing the buffer when the error is ERANGE. Any other error just means we cannot fetch and store the current working directory. Fix all callers to check get_startup_wd() returns NULL. Only abort startup if a relative path needs to be used for user supplied relative log files. Debug messages will just show "<NO CWD>". And skip reading any config files from the startup_wd if it doesn't exist. Also add a new testcase that tests executing valgrind in a deep, inaccessible and/or non-existing directory (none/tests/nocwd.vgtest). git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15989
116 lines
4.2 KiB
C
116 lines
4.2 KiB
C
|
|
/*--------------------------------------------------------------------*/
|
|
/*--- File/socket-related libc stuff. pub_tool_libcfile.h ---*/
|
|
/*--------------------------------------------------------------------*/
|
|
|
|
/*
|
|
This file is part of Valgrind, a dynamic binary instrumentation
|
|
framework.
|
|
|
|
Copyright (C) 2000-2015 Julian Seward
|
|
jseward@acm.org
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307, USA.
|
|
|
|
The GNU General Public License is contained in the file COPYING.
|
|
*/
|
|
|
|
#ifndef __PUB_TOOL_LIBCFILE_H
|
|
#define __PUB_TOOL_LIBCFILE_H
|
|
|
|
#include "pub_tool_basics.h" // VG_ macro
|
|
#include "pub_tool_vki.h" // vki_dirent et al.
|
|
|
|
/* ---------------------------------------------------------------------
|
|
File-related functions.
|
|
------------------------------------------------------------------ */
|
|
|
|
/* To use this file you must first include pub_tool_vki.h. */
|
|
|
|
/* Note that VG_(stat) and VG_(fstat) write to a 'struct vg_stat*' and
|
|
not a 'struct vki_stat*' or a 'struct vki_stat64*'. 'struct
|
|
vg_stat*' is not the same as either of the vki_ versions. No
|
|
specific vki_stat{,64} kernel structure will work and is
|
|
consistently available on different architectures on Linux, so we
|
|
have to use this 'struct vg_stat' impedance-matching type
|
|
instead.
|
|
|
|
Also note that the fieldnames aren't prefixed with "st_". This is because
|
|
st_atime et al are macros in sys/stat.h on Darwin, and using those names
|
|
screws things up.
|
|
*/
|
|
struct vg_stat {
|
|
ULong dev;
|
|
ULong ino;
|
|
ULong nlink;
|
|
UInt mode;
|
|
UInt uid;
|
|
UInt gid;
|
|
ULong rdev;
|
|
Long size;
|
|
ULong blksize;
|
|
ULong blocks;
|
|
ULong atime;
|
|
ULong atime_nsec;
|
|
ULong mtime;
|
|
ULong mtime_nsec;
|
|
ULong ctime;
|
|
ULong ctime_nsec;
|
|
};
|
|
|
|
extern SysRes VG_(mknod) ( const HChar* pathname, Int mode, UWord dev );
|
|
extern SysRes VG_(open) ( const HChar* pathname, Int flags, Int mode );
|
|
/* fd_open words like the open(2) system call:
|
|
returns fd if success, -1 otherwise */
|
|
extern Int VG_(fd_open) (const HChar* pathname, Int flags, Int mode);
|
|
extern void VG_(close) ( Int fd );
|
|
extern Int VG_(read) ( Int fd, void* buf, Int count);
|
|
extern Int VG_(write) ( Int fd, const void* buf, Int count);
|
|
extern Int VG_(pipe) ( Int fd[2] );
|
|
extern Off64T VG_(lseek) ( Int fd, Off64T offset, Int whence );
|
|
|
|
extern SysRes VG_(stat) ( const HChar* file_name, struct vg_stat* buf );
|
|
extern Int VG_(fstat) ( Int fd, struct vg_stat* buf );
|
|
extern SysRes VG_(dup) ( Int oldfd );
|
|
extern SysRes VG_(dup2) ( Int oldfd, Int newfd );
|
|
extern Int VG_(rename) ( const HChar* old_name, const HChar* new_name );
|
|
extern Int VG_(unlink) ( const HChar* file_name );
|
|
|
|
extern SysRes VG_(poll) (struct vki_pollfd *fds, Int nfds, Int timeout);
|
|
|
|
extern SSizeT VG_(readlink)( const HChar* path, HChar* buf, SizeT bufsiz);
|
|
|
|
#if defined(VGO_linux) || defined(VGO_solaris)
|
|
extern Int VG_(getdents64)( Int fd, struct vki_dirent64 *dirp, UInt count );
|
|
#endif
|
|
|
|
extern const HChar* VG_(basename)( const HChar* path );
|
|
extern const HChar* VG_(dirname) ( const HChar* path );
|
|
|
|
/* Return the name of a directory for temporary files. */
|
|
extern const HChar* VG_(tmpdir)(void);
|
|
|
|
/* Return the working directory at startup. The returned string is
|
|
persistent. Might be NULL if the current working directory doesn't
|
|
exist. */
|
|
extern const HChar *VG_(get_startup_wd) ( void );
|
|
|
|
#endif // __PUB_TOOL_LIBCFILE_H
|
|
|
|
/*--------------------------------------------------------------------*/
|
|
/*--- end ---*/
|
|
/*--------------------------------------------------------------------*/
|