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* mmap.cc (class mmap_record): Pack 4 byte-aligned. Convert member dev 

to plain int.
	(mmap_record::alloc_fh): Create temporary device from dev and use in
	call to build_fh_dev.
This commit is contained in:
Corinna Vinschen 2011-03-18 13:42:03 +00:00
parent ac706ac123
commit bf69faeb0d
2 changed files with 16 additions and 5 deletions
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7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
2011-03-18 Corinna Vinschen <corinna@vinschen.de>
* mmap.cc (class mmap_record): Pack 4 byte-aligned. Convert member dev
to plain int.
(mmap_record::alloc_fh): Create temporary device from dev and use in
call to build_fh_dev.
2011-03-18 Corinna Vinschen <corinna@vinschen.de>
* mmap.cc (mmap_record::page_map): Define as variable array rather than

14
winsup/cygwin/mmap.cc
View File

@ -245,6 +245,7 @@ MapView (HANDLE h, void *addr, size_t len, DWORD openflags,
per mapped memory page. The bit is set if the page is accessible,
unset otherwise. */
#pragma pack(push, 4)
class mmap_record
{
public:
@ -259,7 +260,7 @@ class mmap_record
_off64_t offset;
DWORD len;
caddr_t base_address;
device dev;
int dev;
DWORD page_map[0];
public:
@ -274,16 +275,16 @@ class mmap_record
len (l),
base_address (b)
{
dev.devn = 0;
dev = 0;
if (fd >= 0 && !cygheap->fdtab.not_open (fd))
dev = cygheap->fdtab[fd]->dev ();
else if (fd == -1)
dev.parse (FH_ZERO);
dev = FH_ZERO;
}
int get_fd () const { return fd; }
HANDLE get_handle () const { return mapping_hdl; }
device& get_device () { return dev; }
int get_device () { return dev; }
int get_prot () const { return prot; }
int get_openflags () const { return openflags; }
int get_flags () const { return flags; }
@ -316,6 +317,7 @@ class mmap_record
{ return ::gen_protect (get_prot (), get_flags ()); }
bool compatible_flags (int fl) const;
};
#pragma pack(pop)
class mmap_list
{
@ -519,7 +521,9 @@ mmap_record::alloc_fh ()
the call to fork(). This requires creating a fhandler
of the correct type to be sure to call the method of the
correct class. */
fhandler_base *fh = build_fh_dev (get_device ());
device fdev;
fdev.parse (get_device ());
fhandler_base *fh = build_fh_dev (fdev, "");
fh->set_access (get_openflags ());
return fh;
}