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63d3311c26
The size of stat depends on various macros on Windows which leads to the problem of size mismatches when glib is built with a different configuration than a program using it. For example the autotools build defaults to _FILE_OFFSET_BITS=64 and a program not defining _FILE_OFFSET_BITS will allocate a too small struct on the stack, leading to stack corruption when glib writes to it. To make the size the user sees always match the default mingw build define GStatBuf as _stat64 (same as _FILE_OFFSET_BITS=64) under mingw+64bit.
175 lines
4.8 KiB
C
175 lines
4.8 KiB
C
/* gstdio.h - GFilename wrappers for C library functions
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*
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* Copyright 2004 Tor Lillqvist
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __G_STDIO_H__
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#define __G_STDIO_H__
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#include <glib/gprintf.h>
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#include <sys/stat.h>
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G_BEGIN_DECLS
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#if (defined (__MINGW64_VERSION_MAJOR) || defined (_MSC_VER)) && !defined(_WIN64)
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/* Make it clear that we mean the struct with 32-bit st_size and
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* 32-bit st_*time fields as that is how the 32-bit GLib DLL normally
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* has been compiled. If you get a compiler warning when calling
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* g_stat(), do take it seriously and make sure that the type of
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* struct stat the code in GLib fills in matches the struct the type
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* of struct stat you pass to g_stat(). To avoid hassle, to get file
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* attributes just use the GIO API instead which doesn't use struct
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* stat.
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*
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* Sure, it would be nicer to use a struct with 64-bit st_size and
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* 64-bit st_*time fields, but changing that now would break ABI. And
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* in MinGW, a plain "struct stat" is the one with 32-bit st_size and
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* st_*time fields.
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*/
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typedef struct _stat32 GStatBuf;
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#elif defined(__MINGW64_VERSION_MAJOR) && defined(_WIN64)
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typedef struct _stat64 GStatBuf;
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#else
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typedef struct stat GStatBuf;
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#endif
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#if defined(G_OS_UNIX) && !defined(G_STDIO_NO_WRAP_ON_UNIX)
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/* Just pass on to the system functions, so there's no potential for data
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* format mismatches, especially with large file interfaces.
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* A few functions can't be handled in this way, since they are not defined
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* in a portable system header that we could include here.
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*/
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#ifndef __GTK_DOC_IGNORE__
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#define g_chmod chmod
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#define g_open open
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#define g_creat creat
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#define g_rename rename
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#define g_mkdir mkdir
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#define g_stat stat
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#define g_lstat lstat
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#define g_remove remove
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#define g_fopen fopen
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#define g_freopen freopen
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#define g_utime utime
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#endif
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GLIB_AVAILABLE_IN_ALL
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int g_access (const gchar *filename,
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int mode);
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GLIB_AVAILABLE_IN_ALL
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int g_chdir (const gchar *path);
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GLIB_AVAILABLE_IN_ALL
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int g_unlink (const gchar *filename);
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GLIB_AVAILABLE_IN_ALL
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int g_rmdir (const gchar *filename);
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#else /* ! G_OS_UNIX */
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/* Wrappers for C library functions that take pathname arguments. On
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* Unix, the pathname is a file name as it literally is in the file
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* system. On well-maintained systems with consistent users who know
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* what they are doing and no exchange of files with others this would
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* be a well-defined encoding, preferably UTF-8. On Windows, the
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* pathname is always in UTF-8, even if that is not the on-disk
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* encoding, and not the encoding accepted by the C library or Win32
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* API.
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*/
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GLIB_AVAILABLE_IN_ALL
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int g_access (const gchar *filename,
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int mode);
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GLIB_AVAILABLE_IN_ALL
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int g_chmod (const gchar *filename,
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int mode);
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GLIB_AVAILABLE_IN_ALL
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int g_open (const gchar *filename,
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int flags,
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int mode);
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GLIB_AVAILABLE_IN_ALL
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int g_creat (const gchar *filename,
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int mode);
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GLIB_AVAILABLE_IN_ALL
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int g_rename (const gchar *oldfilename,
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const gchar *newfilename);
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GLIB_AVAILABLE_IN_ALL
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int g_mkdir (const gchar *filename,
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int mode);
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GLIB_AVAILABLE_IN_ALL
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int g_chdir (const gchar *path);
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GLIB_AVAILABLE_IN_ALL
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int g_stat (const gchar *filename,
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GStatBuf *buf);
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GLIB_AVAILABLE_IN_ALL
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int g_lstat (const gchar *filename,
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GStatBuf *buf);
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GLIB_AVAILABLE_IN_ALL
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int g_unlink (const gchar *filename);
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GLIB_AVAILABLE_IN_ALL
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int g_remove (const gchar *filename);
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GLIB_AVAILABLE_IN_ALL
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int g_rmdir (const gchar *filename);
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GLIB_AVAILABLE_IN_ALL
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FILE *g_fopen (const gchar *filename,
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const gchar *mode);
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GLIB_AVAILABLE_IN_ALL
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FILE *g_freopen (const gchar *filename,
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const gchar *mode,
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FILE *stream);
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struct utimbuf; /* Don't need the real definition of struct utimbuf when just
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* including this header.
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*/
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GLIB_AVAILABLE_IN_ALL
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int g_utime (const gchar *filename,
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struct utimbuf *utb);
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#endif /* G_OS_UNIX */
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GLIB_AVAILABLE_IN_2_36
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gboolean g_close (gint fd,
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GError **error);
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G_END_DECLS
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#endif /* __G_STDIO_H__ */
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