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Fix restoring from pdumper file on MS-Windows 9X

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* src/pdumper.c (dump_map_file_w32): Use PAGE_WRITECOPY flag when
calling CreateFileMapping for DUMP_MEMORY_ACCESS_READWRITE access,
as that is required by Windows 9X.  (Bug#50453)
This commit is contained in:
Eli Zaretskii 2021-09-11 09:56:27 +03:00
parent d37dcfa30f
commit f98700af80
1 changed files with 14 additions and 1 deletions
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15
src/pdumper.c
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@ -4537,15 +4537,28 @@ dump_map_file_w32 (void *base, int fd, off_t offset, size_t size,
uint32_t offset_low = (uint32_t) (full_offset & 0xffffffff);
int error;
DWORD protect;
DWORD map_access;
file = (HANDLE) _get_osfhandle (fd);
if (file == INVALID_HANDLE_VALUE)
goto out;
switch (protection)
{
case DUMP_MEMORY_ACCESS_READWRITE:
protect = PAGE_WRITECOPY; /* for Windows 9X */
break;
default:
case DUMP_MEMORY_ACCESS_NONE:
case DUMP_MEMORY_ACCESS_READ:
protect = PAGE_READONLY;
break;
}
section = CreateFileMapping (file,
/*lpAttributes=*/NULL,
PAGE_READONLY,
protect,
/*dwMaximumSizeHigh=*/0,
/*dwMaximumSizeLow=*/0,
/*lpName=*/NULL);