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* cygmagic: Add define name to warning.

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* dcrt0.cc (_dll_crt0): Check for changes in child_info size.
(multiple_cygwin_problem): Avoid "proc" errors when testing.  Just assume new
cygwin proc.
* shared_info.h (mount_info): Add 'cb' element for sanity checks.
(shared_info): Ditto.
* child_info.h (child_info): Add fhandler_union_size element for sanity
checking.
* shared.cc (open_shared): Detect shared region size mismatch between parent
and child.
(shared_info::initialize): Detect shared region size mismatch with expectation.
(memory_Init): Ditto.
* sigproc.cc (init_child_info): Correctly set cb in passed structure.
* shared.cc (open_shared):
This commit is contained in:
Christopher Faylor
2001-12-26 21:35:16 +00:00
parent dcd8b9be82
commit aaf219f01e
7 changed files with 67 additions and 17 deletions
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20
winsup/cygwin/shared.cc
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@@ -103,10 +103,12 @@ open_shared (const char *name, int n, HANDLE &shared_h, DWORD size, void *addr)
void
shared_info::initialize ()
{
if (inited)
if (version)
{
if (inited != SHARED_VERSION_MAGIC)
multiple_cygwin_problem ("shared", inited, SHARED_VERSION);
if (version != SHARED_VERSION_MAGIC)
multiple_cygwin_problem ("shared", version, SHARED_VERSION);
else if (cb != SHARED_INFO_CB)
multiple_cygwin_problem ("shared size", cb, SHARED_INFO_CB);
return;
}
@@ -115,7 +117,11 @@ shared_info::initialize ()
/* Initialize tty table. */
tty.init ();
inited = SHARED_VERSION_MAGIC;
version = SHARED_VERSION_MAGIC;
cb = sizeof (*this);
if (cb != SHARED_INFO_CB)
system_printf ("size of shared memory region changed from %u to %u",
SHARED_INFO_CB, cb);
}
void __stdcall
@@ -162,10 +168,16 @@ memory_init ()
{
mount_table->version = MOUNT_VERSION_MAGIC;
debug_printf ("initializing mount table");
mount_table->cb = sizeof (*mount_table);
if (mount_table->cb != MOUNT_INFO_CB)
system_printf ("size of mount table region changed from %u to %u",
MOUNT_INFO_CB, mount_table->cb);
mount_table->init (); /* Initialize the mount table. */
}
else if (mount_table->version != MOUNT_VERSION_MAGIC)
multiple_cygwin_problem ("mount", mount_table->version, MOUNT_VERSION);
else if (mount_table->cb != MOUNT_INFO_CB)
multiple_cygwin_problem ("mount table size", mount_table->cb, MOUNT_INFO_CB);
}