size_t abstract_fstream::size() const {
return (size_t)_filelengthi64(_fileno(FH));
}
static TtakBool size(void *cookie, TtakInt64 *len)
{
int fd = static_cast<int>(reinterpret_cast<intptr_t>(cookie));
*len = _filelengthi64(fd);
return *len >= 0LL;
}
__ptr_t
__mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd,
__off64_t offset)
{
__ptr_t map = (__ptr_t) NULL;
caddr_t gran_addr = (caddr_t) addr;
HANDLE handle = INVALID_HANDLE_VALUE;
DWORD cfm_flags = 0, mvf_flags = 0, sysgran = getgranularity ();
__off64_t gran_offset = offset, filelen = _filelengthi64(fd);
int mmlen = len;
switch (prot) {
case PROT_READ | PROT_WRITE | PROT_EXEC:
case PROT_WRITE | PROT_EXEC:
cfm_flags = PAGE_EXECUTE_READWRITE;
mvf_flags = FILE_MAP_ALL_ACCESS;
break;
case PROT_READ | PROT_WRITE:
cfm_flags = PAGE_READWRITE;
mvf_flags = FILE_MAP_ALL_ACCESS;
break;
case PROT_WRITE:
cfm_flags = PAGE_READWRITE;
mvf_flags = FILE_MAP_WRITE;
break;
case PROT_READ:
cfm_flags = PAGE_READONLY;
mvf_flags = FILE_MAP_READ;
break;
case PROT_NONE:
cfm_flags = PAGE_NOACCESS;
mvf_flags = FILE_MAP_READ;
break;
case PROT_EXEC:
cfm_flags = PAGE_EXECUTE;
mvf_flags = FILE_MAP_READ;
break;
}
if (flags & MAP_PRIVATE) {
if (IsWin9x ())
cfm_flags = PAGE_WRITECOPY;
mvf_flags = FILE_MAP_COPY;
}
fprintf (stderr, "Addr before: %p\n", gran_addr);
fprintf (stderr, "Offset before: %#I64X\n", gran_offset);
if (flags & MAP_FIXED) {
gran_offset = offset;
gran_addr = addr;
}
else {
gran_offset = offset & ~(sysgran - 1);
gran_addr = (caddr_t) (((DWORD) gran_addr / sysgran) * sysgran);
}
fprintf (stderr, "Addr after: %p\n", gran_addr);
fprintf (stderr, "Offset after: %#I64X\n", gran_offset);
mmlen = (filelen < gran_offset + len ? filelen - gran_offset : len);
handle = CreateFileMapping ((HANDLE) _get_osfhandle(fd), NULL, cfm_flags,
0, mmlen, NULL);
if (!handle) {
set_werrno;
WinErr ("CreateFileMapping");
return MAP_FAILED;
}
map = (__ptr_t) MapViewOfFileEx (handle, mvf_flags, HIDWORD(gran_offset),
LODWORD(gran_offset), (SIZE_T) mmlen, (LPVOID) gran_addr);
if (map == NULL && (flags & MAP_FIXED) ) {
fprintf (stderr, "Starting address: %p\n", (LPVOID) gran_addr);
WinErr ("First try of MapViewOfFileEx failed");
map = (__ptr_t) MapViewOfFileEx (handle, mvf_flags, HIDWORD(gran_offset),
LODWORD(gran_offset), (SIZE_T) mmlen, (LPVOID) NULL);
}
CloseHandle(handle);
if (map == NULL) {
set_werrno;
WinErr ("MapViewOfFileEx");
return MAP_FAILED;
}
return map;
}
CFile::FILESIZE CWinFile::GetSize() const
{
ASSERT(IsValid());
return _filelengthi64(m_hFile);
}
static sf_count_t size(void *cookie)
{
int fd = static_cast<int>(reinterpret_cast<intptr_t>(cookie));
return _filelengthi64(fd);
}
//-----------------------------------------------------------------------------
// Purpose: total size of pack file in megabytes
//-----------------------------------------------------------------------------
int Pack_GetSizeMB()
{
return (int)(_filelengthi64(g_Pack.m_hPack) / (1024 * 1024));
}
//-----------------------------------------------------------------------------
// Purpose: Starts adding a file to the packfile
//-----------------------------------------------------------------------------
bool Pack_StartAppendingFile(const char *pakfile, const char *pFileName)
{
memset(&g_Pack, 0, sizeof(g_Pack));
if (strlen(pFileName) >= 112)
{
printf("Couldn't append file '%s', filename is too long (> 128 characters)\n", pFileName);
return false;
}
strncpy(g_Pack.m_szNewFileName, pFileName, sizeof(g_Pack.m_szNewFileName));
g_Pack.m_hPack = _open(pakfile, _O_RDWR | _O_BINARY);
if (g_Pack.m_hPack == -1)
{
printf("Couldn't open pakfile '%s'\n", pakfile);
return false;
}
g_Pack.m_iOldPakFileSize = _filelengthi64(g_Pack.m_hPack);
// jump to the end of the file, see if it has a header
packappenededheader_t appended;
_lseeki64(g_Pack.m_hPack, (long)(0 - sizeof(packappenededheader_t)), SEEK_END);
_read(g_Pack.m_hPack, &appended, sizeof(appended));
if (!(appended.id[0] == 'P'
&& appended.id[1] == 'A'
&& appended.id[2] == 'C'
&& appended.id[3] == 'K'
&& appended.id[4] == 'A'
&& appended.id[5] == 'P'
&& appended.id[6] == 'P'
&& appended.id[7] == 'E'))
{
printf("Invalid pack file '%s'\n", pakfile);
return false;
}
g_Pack.m_iOldHeaderPos = appended.packheaderpos;
g_Pack.m_iOriginalFileSize = appended.originalfilesize;
// read in the pack file header
packheader64_t header;
_lseeki64(g_Pack.m_hPack, appended.packheaderpos, SEEK_SET);
_read(g_Pack.m_hPack, &header, sizeof(header));
g_Pack.m_iFilesInPack = (int)(header.dirlen / sizeof(packfile64_t));
g_Pack.m_iFilesInPack += 1;
// read in the directory
g_Pack.m_pPackFiles = new packfile64_t[g_Pack.m_iFilesInPack];
if (header.dirlen)
{
_lseeki64(g_Pack.m_hPack, appended.packheaderpos + header.dirofs, SEEK_SET);
_read(g_Pack.m_hPack, g_Pack.m_pPackFiles, (long)header.dirlen);
}
// we're going to put the new file where the current packheader is, and move the header forward in the file
// set back to the header position to write the new file
_lseeki64(g_Pack.m_hPack, appended.packheaderpos, SEEK_SET);
return true;
}
