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[CRT] Update file descriptor handling to match Wine (2/7). CORE-14504

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Import Wine commits by Piotr Caban:
* 4508e665c07 msvcrt: Use fd critical section in _commit.
* afc6962a24a msvcrt: Use fd critical section in _close.
* 9a4cfbc3edc msvcrt: Use fd critical section in _eof.
* ffdd16cc0d7 msvcrt: Use fd critical section in _locking.
* fa6de597700 msvcrt: Use fd critical section in _lseeki64.
* f2f45d5fe67 msvcrt: Use fd critical section in _chsize_s.
This commit is contained in:
Thomas Faber 2018-03-25 15:31:50 +02:00
parent 25064fdf3c
commit 9eb1eae28c
No known key found for this signature in database
GPG key ID: 076E7C3D44720826
1 changed files with 93 additions and 64 deletions
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157
sdk/lib/crt/stdio/file.c
View file

@ -182,13 +182,16 @@ static inline ioinfo* get_ioinfo_nolock(int fd)
static inline ioinfo* get_ioinfo(int fd)
{
ioinfo *ret = NULL;
if(fd < MSVCRT_MAX_FILES)
ret = __pioinfo[fd/MSVCRT_FD_BLOCK_SIZE];
if(!ret)
return &__badioinfo;
ioinfo *ret = get_ioinfo_nolock(fd);
if(ret->exflag & EF_CRIT_INIT)
EnterCriticalSection(&ret->crit);
return ret;
}
return ret + (fd%MSVCRT_FD_BLOCK_SIZE);
static inline void release_ioinfo(ioinfo *info)
{
if(info->exflag & EF_CRIT_INIT)
LeaveCriticalSection(&info->crit);
}
static inline FILE* msvcrt_get_file(int i)
@ -814,27 +817,36 @@ int CDECL _wunlink(const wchar_t *path)
*/
int CDECL _commit(int fd)
{
HANDLE hand = fdtoh(fd);
ioinfo *info = get_ioinfo(fd);
int ret;
TRACE(":fd (%d) handle (%p)\n",fd,hand);
if (hand == INVALID_HANDLE_VALUE)
return -1;
if (!FlushFileBuffers(hand))
{
if (GetLastError() == ERROR_INVALID_HANDLE)
TRACE(":fd (%d) handle (%p)\n", fd, info->handle);
if (info->handle == INVALID_HANDLE_VALUE)
ret = -1;
else if (!FlushFileBuffers(info->handle))
{
/* FlushFileBuffers fails for console handles
* so we ignore this error.
*/
return 0;
if (GetLastError() == ERROR_INVALID_HANDLE)
{
/* FlushFileBuffers fails for console handles
* so we ignore this error.
*/
ret = 0;
}
else
{
TRACE(":failed-last error (%d)\n",GetLastError());
_dosmaperr(GetLastError());
ret = -1;
}
}
TRACE(":failed-last error (%d)\n",GetLastError());
_dosmaperr(GetLastError());
return -1;
}
TRACE(":ok\n");
return 0;
else
{
TRACE(":ok\n");
ret = 0;
}
release_ioinfo(info);
return ret;
}
/* _flushall calls fflush which calls _flushall */
@ -907,27 +919,24 @@ int CDECL fflush(FILE* file)
*/
int CDECL _close(int fd)
{
HANDLE hand;
ioinfo *info = get_ioinfo(fd);
int ret;
LOCK_FILES();
hand = fdtoh(fd);
TRACE(":fd (%d) handle (%p)\n",fd,hand);
if (hand == INVALID_HANDLE_VALUE)
TRACE(":fd (%d) handle (%p)\n", fd, info->handle);
if (!(info->wxflag & WX_OPEN)) {
ret = -1;
else if (!CloseHandle(hand))
{
WARN(":failed-last error (%d)\n",GetLastError());
_dosmaperr(GetLastError());
ret = -1;
}
else
{
} else {
ret = CloseHandle(info->handle) ? 0 : -1;
msvcrt_free_fd(fd);
ret = 0;
if (ret) {
WARN(":failed-last error (%d)\n",GetLastError());
_dosmaperr(GetLastError());
ret = -1;
}
}
UNLOCK_FILES();
TRACE(":ok\n");
release_ioinfo(info);
return ret;
}
@ -1004,29 +1013,38 @@ int CDECL _dup(int od)
*/
int CDECL _eof(int fd)
{
ioinfo *info = get_ioinfo(fd);
DWORD curpos,endpos;
LONG hcurpos,hendpos;
HANDLE hand = fdtoh(fd);
TRACE(":fd (%d) handle (%p)\n",fd,hand);
TRACE(":fd (%d) handle (%p)\n", fd, info->handle);
if (hand == INVALID_HANDLE_VALUE)
if (info->handle == INVALID_HANDLE_VALUE)
{
release_ioinfo(info);
return -1;
}
if (get_ioinfo_nolock(fd)->wxflag & WX_ATEOF) return TRUE;
if (info->wxflag & WX_ATEOF)
{
release_ioinfo(info);
return TRUE;
}
/* Otherwise we do it the hard way */
hcurpos = hendpos = 0;
curpos = SetFilePointer(hand, 0, &hcurpos, FILE_CURRENT);
endpos = SetFilePointer(hand, 0, &hendpos, FILE_END);
curpos = SetFilePointer(info->handle, 0, &hcurpos, FILE_CURRENT);
endpos = SetFilePointer(info->handle, 0, &hendpos, FILE_END);
if (curpos == endpos && hcurpos == hendpos)
{
/* FIXME: shouldn't WX_ATEOF be set here? */
release_ioinfo(info);
return TRUE;
}
SetFilePointer(hand, curpos, &hcurpos, FILE_BEGIN);
SetFilePointer(info->handle, curpos, &hcurpos, FILE_BEGIN);
release_ioinfo(info);
return FALSE;
}
@ -1092,15 +1110,20 @@ void msvcrt_free_io(void)
*/
__int64 CDECL _lseeki64(int fd, __int64 offset, int whence)
{
HANDLE hand = fdtoh(fd);
ioinfo *info = get_ioinfo(fd);
LARGE_INTEGER ofs;
TRACE(":fd (%d) handle (%p)\n",fd,hand);
if (hand == INVALID_HANDLE_VALUE)
TRACE(":fd (%d) handle (%p)\n", fd, info->handle);
if (info->handle == INVALID_HANDLE_VALUE)
{
release_ioinfo(info);
return -1;
}
if (whence < 0 || whence > 2)
{
release_ioinfo(info);
*_errno() = EINVAL;
return -1;
}
@ -1114,14 +1137,16 @@ __int64 CDECL _lseeki64(int fd, __int64 offset, int whence)
/* The MoleBox protection scheme expects msvcrt to use SetFilePointer only,
* so a LARGE_INTEGER offset cannot be passed directly via SetFilePointerEx. */
ofs.QuadPart = offset;
if ((ofs.u.LowPart = SetFilePointer(hand, ofs.u.LowPart, &ofs.u.HighPart, whence)) != INVALID_SET_FILE_POINTER ||
if ((ofs.u.LowPart = SetFilePointer(info->handle, ofs.u.LowPart, &ofs.u.HighPart, whence)) != INVALID_SET_FILE_POINTER ||
GetLastError() == ERROR_SUCCESS)
{
get_ioinfo_nolock(fd)->wxflag &= ~(WX_ATEOF|WX_READEOF);
info->wxflag &= ~(WX_ATEOF|WX_READEOF);
/* FIXME: What if we seek _to_ EOF - is EOF set? */
release_ioinfo(info);
return ofs.QuadPart;
}
release_ioinfo(info);
TRACE(":error-last error (%d)\n",GetLastError());
_dosmaperr(GetLastError());
return -1;
@ -1167,16 +1192,20 @@ void CDECL _unlock_file(FILE *file)
*/
int CDECL _locking(int fd, int mode, LONG nbytes)
{
ioinfo *info = get_ioinfo(fd);
BOOL ret;
DWORD cur_locn;
HANDLE hand = fdtoh(fd);
TRACE(":fd (%d) handle (%p)\n",fd,hand);
if (hand == INVALID_HANDLE_VALUE)
TRACE(":fd (%d) handle (%p)\n", fd, info->handle);
if (info->handle == INVALID_HANDLE_VALUE)
{
release_ioinfo(info);
return -1;
}
if (mode < 0 || mode > 4)
{
release_ioinfo(info);
*_errno() = EINVAL;
return -1;
}
@ -1189,8 +1218,9 @@ int CDECL _locking(int fd, int mode, LONG nbytes)
(mode==_LK_NBRLCK)?"_LK_NBRLCK":
"UNKNOWN");
if ((cur_locn = SetFilePointer(hand, 0L, NULL, SEEK_CUR)) == INVALID_SET_FILE_POINTER)
if ((cur_locn = SetFilePointer(info->handle, 0L, NULL, SEEK_CUR)) == INVALID_SET_FILE_POINTER)
{
release_ioinfo(info);
FIXME ("Seek failed\n");
*_errno() = EINVAL; /* FIXME */
return -1;
@ -1201,16 +1231,17 @@ int CDECL _locking(int fd, int mode, LONG nbytes)
ret = 1; /* just to satisfy gcc */
while (nretry--)
{
ret = LockFile(hand, cur_locn, 0L, nbytes, 0L);
ret = LockFile(info->handle, cur_locn, 0L, nbytes, 0L);
if (ret) break;
Sleep(1);
}
}
else if (mode == _LK_UNLCK)
ret = UnlockFile(hand, cur_locn, 0L, nbytes, 0L);
ret = UnlockFile(info->handle, cur_locn, 0L, nbytes, 0L);
else
ret = LockFile(hand, cur_locn, 0L, nbytes, 0L);
ret = LockFile(info->handle, cur_locn, 0L, nbytes, 0L);
/* FIXME - what about error settings? */
release_ioinfo(info);
return ret ? 0 : -1;
}
@ -1259,18 +1290,16 @@ int CDECL fseek(FILE* file, long offset, int whence)
*/
int CDECL _chsize_s(int fd, __int64 size)
{
ioinfo *info;
__int64 cur, pos;
HANDLE handle;
BOOL ret = FALSE;
TRACE("(fd=%d, size=%s)\n", fd, wine_dbgstr_longlong(size));
if (!MSVCRT_CHECK_PMT(size >= 0)) return EINVAL;
LOCK_FILES();
handle = fdtoh(fd);
if (handle != INVALID_HANDLE_VALUE)
info = get_ioinfo(fd);
if (info->handle != INVALID_HANDLE_VALUE)
{
/* save the current file pointer */
cur = _lseeki64(fd, 0, SEEK_CUR);
@ -1279,7 +1308,7 @@ int CDECL _chsize_s(int fd, __int64 size)
pos = _lseeki64(fd, size, SEEK_SET);
if (pos >= 0)
{
ret = SetEndOfFile(handle);
ret = SetEndOfFile(info->handle);
if (!ret) _dosmaperr(GetLastError());
}
@ -1288,7 +1317,7 @@ int CDECL _chsize_s(int fd, __int64 size)
}
}
UNLOCK_FILES();
release_ioinfo(info);
return ret ? 0 : *_errno();
}