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Memory maps enhancements on Windows; see issue #578

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This commit is contained in:
Oliver Duis
2011-03-13 16:31:49 +01:00
parent 751dbfd408
commit 5feaffbb79
3 changed files with 25 additions and 2 deletions
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3
rtengine/myfile.cc
View File

@@ -19,6 +19,7 @@
#include <myfile.h>
#include <cstdarg>
#include <glibmm.h>
#include <safegtk.h>
#ifdef RAWZOR_SUPPORT
#include <rwz_sdk.h>
#endif
@@ -65,7 +66,7 @@ int munmap(void *start, size_t length)
IMFILE* fopen (const char* fname)
{
int fd = ::open(fname,O_RDONLY);
int fd = safe_open_ReadOnly(fname);
if ( fd < 0 )
return 0;

22
rtengine/safegtk.cc
View File

@@ -227,7 +227,7 @@ FILE * safe_g_fopen_WriteBinLock(const Glib::ustring& fname) {
// g_fopen just uses _wfopen internally on Windows, does not lock access and has no options to set this
// so use a native function to work around this problem
wchar_t *wFname = (wchar_t*)g_utf8_to_utf16 (fname.c_str(), -1, NULL, NULL, NULL);
HANDLE hFile = CreateFileW(wFname, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
HANDLE hFile = CreateFileW(wFname, GENERIC_READ | GENERIC_WRITE, 0 /* no sharing allowed */, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
g_free(wFname);
if (hFile==INVALID_HANDLE_VALUE)
@@ -241,6 +241,26 @@ FILE * safe_g_fopen_WriteBinLock(const Glib::ustring& fname) {
return f;
}
// Covers old UNIX ::open, which expects ANSI instead of UTF8 on Windows
int safe_open_ReadOnly(const char *fname) {
int fd=-1;
#ifdef WIN32
// First convert UTF8 to UTF16, then use Windows function to open
wchar_t *wFname = (wchar_t*)g_utf8_to_utf16 (fname, -1, NULL, NULL, NULL);
HANDLE hFile = CreateFileW(wFname, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
g_free(wFname);
// convert back to old file descriptor format
if (hFile!=INVALID_HANDLE_VALUE) fd = _open_osfhandle((intptr_t)hFile, 0);
#else
fd = ::open(fname, O_RDONLY);
#endif
return fd;
}
FILE * safe_g_fopen(const Glib::ustring& src,const gchar *mode)
{
return g_fopen(src.c_str(),mode);

2
rtengine/safegtk.h
View File

@@ -32,6 +32,8 @@ std::string safe_filename_from_utf8 (const Glib::ustring& utf8_str);
FILE * safe_g_fopen(const Glib::ustring& src,const gchar *mode);
FILE * safe_g_fopen_WriteBinLock(const Glib::ustring& fname);
int safe_open_ReadOnly(const char *fname);
bool safe_file_test (const Glib::ustring& filename, Glib::FileTest test);
int safe_g_remove(const Glib::ustring& filename);
int safe_g_rename(const Glib::ustring& oldFilename, const Glib::ustring& newFilename);