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* fhandler.h (-struct wsa_event): Move to wsa_event.h. Include

Browse Source 
wsa_event.h instead.
	* fhandler_socket.cc (NUM_SOCKS): Move to wsa_event.h.
	(wsa_events): Move from DLL shared area to cygwin_shared shared
	memory.  Accommodate throughout.
	(socket_serial_number): Ditto.
	* fhandler_tape.cc (mt): Ditto.
	(mtinfo_init): Remove.
	(mt): Define as cygwin_shared->mt.
	* flock.cc (FLOCK_PARENT_DIR_ACCESS): Remove.
	(FLOCK_INODE_DIR_ACCESS): Move up in file.
	(FLOCK_MUTANT_ACCESS): Ditto.
	(FLOCK_EVENT_ACCESS): Ditto.
	(get_lock_parent_dir): Remove.
	(inode_t::inode_t): Call get_shared_parent_dir to get parent dir handle.
	Add a "flock-" prefix to file's lock directory name for clarity.
	* mtinfo.h (mtinfo_init): Drop declaration.
	* net.cc (last_used_bindresvport): Move from DLL shared area to
	cygwin_shared shared memory.
	(cygwin_bindresvport_sa): Accommodate above change.
	* sec_helper.cc (_everyone_sd): Move here from flock.cc.
	* security.h (SD_MIN_SIZE): Ditto.
	(everyone_sd): Ditto.
	* shared.cc (cygwin_shared_area): Remove.
	(cygwin_shared_h): New handle.
	(get_shared_parent_dir): New static function.
	(shared_name): Drop session_local argument.  Call get_shared_parent_dir
	here.  Add cygwin-shared subdir to object name.
	(offsets): Reinstantiate SH_CYGWIN_SHARED member.
	(open_shared): Revert change from 2007-03-29 for systems supporting
	SeCreateGlobalPrivilege.
	(shared_info::initialize): Call mtinfo's initialize here.
	(memory_init): Drop call to mtinfo_init.
	* shared_info.h (SHARED_INFO_CB): Accommodate change to shared_info.
	(CURR_SHARED_MAGIC): Ditto.
	(class shared_info): Add members for global socket and tape info
	sharing.
	(enum shared_locations): Reinstantiate SH_CYGWIN_SHARED.
	(get_shared_parent_dir): Declare.
	(shared_name): Drop session_local argument from declaration.
	* wsa_event.h: New file.  Move definitions of NUM_SOCKS and
	struct wsa_event here.
This commit is contained in:
Corinna Vinschen
2008-04-18 20:13:37 +00:00
parent 1d8db11e8e
commit db5ae61884
12 changed files with 207 additions and 161 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
winsup/cygwin/ChangeLog
View File

@@ -1,3 +1,48 @@
2008-04-18 Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (-struct wsa_event): Move to wsa_event.h. Include
wsa_event.h instead.
* fhandler_socket.cc (NUM_SOCKS): Move to wsa_event.h.
(wsa_events): Move from DLL shared area to cygwin_shared shared
memory. Accommodate throughout.
(socket_serial_number): Ditto.
* fhandler_tape.cc (mt): Ditto.
(mtinfo_init): Remove.
(mt): Define as cygwin_shared->mt.
* flock.cc (FLOCK_PARENT_DIR_ACCESS): Remove.
(FLOCK_INODE_DIR_ACCESS): Move up in file.
(FLOCK_MUTANT_ACCESS): Ditto.
(FLOCK_EVENT_ACCESS): Ditto.
(get_lock_parent_dir): Remove.
(inode_t::inode_t): Call get_shared_parent_dir to get parent dir handle.
Add a "flock-" prefix to file's lock directory name for clarity.
* mtinfo.h (mtinfo_init): Drop declaration.
* net.cc (last_used_bindresvport): Move from DLL shared area to
cygwin_shared shared memory.
(cygwin_bindresvport_sa): Accommodate above change.
* sec_helper.cc (_everyone_sd): Move here from flock.cc.
* security.h (SD_MIN_SIZE): Ditto.
(everyone_sd): Ditto.
* shared.cc (cygwin_shared_area): Remove.
(cygwin_shared_h): New handle.
(get_shared_parent_dir): New static function.
(shared_name): Drop session_local argument. Call get_shared_parent_dir
here. Add cygwin-shared subdir to object name.
(offsets): Reinstantiate SH_CYGWIN_SHARED member.
(open_shared): Revert change from 2007-03-29 for systems supporting
SeCreateGlobalPrivilege.
(shared_info::initialize): Call mtinfo's initialize here.
(memory_init): Drop call to mtinfo_init.
* shared_info.h (SHARED_INFO_CB): Accommodate change to shared_info.
(CURR_SHARED_MAGIC): Ditto.
(class shared_info): Add members for global socket and tape info
sharing.
(enum shared_locations): Reinstantiate SH_CYGWIN_SHARED.
(get_shared_parent_dir): Declare.
(shared_name): Drop session_local argument from declaration.
* wsa_event.h: New file. Move definitions of NUM_SOCKS and
struct wsa_event here.
2008-04-18 Christopher Faylor <me+cygwin@cgf.cx>
* autoload.cc (noload): Make sure this and succeeding functions are

8
winsup/cygwin/fhandler.h
View File

@@ -394,13 +394,7 @@ class fhandler_mailslot : public fhandler_base
select_record *select_read (select_record *s);
};
struct wsa_event
{
LONG serial_number;
long events;
int connect_errorcode;
pid_t owner;
};
#include "wsa_event.h"
class fhandler_socket: public fhandler_base
{

28
winsup/cygwin/fhandler_socket.cc
View File

@@ -403,15 +403,9 @@ fhandler_socket::af_local_set_secret (char *buf)
/* Maximum number of concurrently opened sockets from all Cygwin processes
per session. Note that shared sockets (through dup/fork/exec) are
counted as one socket. */
#define NUM_SOCKS (65536 / sizeof (wsa_event))
#define LOCK_EVENTS WaitForSingleObject (wsock_mtx, INFINITE)
#define UNLOCK_EVENTS ReleaseMutex (wsock_mtx)
static wsa_event wsa_events[NUM_SOCKS] __attribute__((section (".cygwin_dll_common"), shared)) = { 0 };
static LONG socket_serial_number __attribute__((section (".cygwin_dll_common"), shared)) = 0;
static HANDLE wsa_slot_mtx;
static wsa_event *
@@ -422,7 +416,7 @@ search_wsa_event_slot (LONG new_serial_number)
if (!wsa_slot_mtx)
{
wsa_slot_mtx = CreateMutex (&sec_all, FALSE,
shared_name (name, "sock", 0, true));
shared_name (name, "sock", 0));
if (!wsa_slot_mtx)
api_fatal ("Couldn't create/open shared socket mutex, %E");
}
@@ -436,11 +430,11 @@ search_wsa_event_slot (LONG new_serial_number)
break;
}
unsigned int slot = new_serial_number % NUM_SOCKS;
while (wsa_events[slot].serial_number)
while (cygwin_shared->wsa_events[slot].serial_number)
{
HANDLE searchmtx = OpenMutex (STANDARD_RIGHTS_READ, FALSE,
shared_name (searchname, "sock", wsa_events[slot].serial_number,
true));
shared_name (searchname, "sock",
cygwin_shared->wsa_events[slot].serial_number));
if (!searchmtx)
break;
/* Mutex still exists, attached socket is active, try next slot. */
@@ -454,10 +448,10 @@ search_wsa_event_slot (LONG new_serial_number)
return NULL;
}
}
memset (&wsa_events[slot], 0, sizeof (wsa_event));
wsa_events[slot].serial_number = new_serial_number;
memset (&cygwin_shared->wsa_events[slot], 0, sizeof (wsa_event));
cygwin_shared->wsa_events[slot].serial_number = new_serial_number;
ReleaseMutex (wsa_slot_mtx);
return wsa_events + slot;
return cygwin_shared->wsa_events + slot;
}
bool
@@ -469,12 +463,12 @@ fhandler_socket::init_events ()
do
{
new_serial_number = InterlockedIncrement (&socket_serial_number);
new_serial_number =
InterlockedIncrement (&cygwin_shared->socket_serial_number);
if (!new_serial_number) /* 0 is reserved for global mutex */
InterlockedIncrement (&socket_serial_number);
InterlockedIncrement (&cygwin_shared->socket_serial_number);
wsock_mtx = CreateMutex (&sec_all, FALSE,
shared_name (name, "sock", new_serial_number,
true));
shared_name (name, "sock", new_serial_number));
if (!wsock_mtx)
{
debug_printf ("CreateMutex, %E");

11
winsup/cygwin/fhandler_tape.cc
View File

@@ -22,7 +22,6 @@ details. */
#include "cygheap.h"
#include "shared_info.h"
#include "sigproc.h"
#include "mtinfo.h"
/* Media changes and bus resets are sometimes reported and the function
hasn't been executed. We repeat all functions which return with one
@@ -1155,17 +1154,11 @@ mtinfo::initialize ()
}
}
static mtinfo mt __attribute__((section (".cygwin_dll_common"), shared));
void __stdcall
mtinfo_init ()
{
mt.initialize ();
}
/**********************************************************************/
/* fhandler_dev_tape */
#define mt (cygwin_shared->mt)
#define lock(err_ret_val) if (!_lock ()) return err_ret_val;
inline bool

98
winsup/cygwin/flock.cc
View File

@@ -106,6 +106,7 @@
#include <stdlib.h>
#include "cygerrno.h"
#include "security.h"
#include "shared_info.h"
#include "path.h"
#include "fhandler.h"
#include "dtable.h"
@@ -133,6 +134,19 @@ static NO_COPY muto lockf_guard;
#define LOCK_OBJ_NAME_LEN 64
#define FLOCK_INODE_DIR_ACCESS (DIRECTORY_QUERY \
| DIRECTORY_TRAVERSE \
| DIRECTORY_CREATE_OBJECT \
| READ_CONTROL)
#define FLOCK_MUTANT_ACCESS (MUTANT_QUERY_STATE \
| SYNCHRONIZE \
| READ_CONTROL)
#define FLOCK_EVENT_ACCESS (EVENT_QUERY_STATE \
| SYNCHRONIZE \
| READ_CONTROL)
/* This function takes the own process security descriptor DACL and adds
SYNCHRONIZE permissions for everyone. This allows all processes
to wait for this process to die when blocking in a F_SETLKW on a lock
@@ -190,84 +204,6 @@ allow_others_to_sync ()
done = true;
}
/* Helper function to create an event security descriptor which only allows
specific access to everyone. Only the creating process has all access
rights. */
#define FLOCK_PARENT_DIR_ACCESS (DIRECTORY_QUERY \
| DIRECTORY_TRAVERSE \
| DIRECTORY_CREATE_SUBDIRECTORY \
| READ_CONTROL)
#define FLOCK_INODE_DIR_ACCESS (DIRECTORY_QUERY \
| DIRECTORY_TRAVERSE \
| DIRECTORY_CREATE_OBJECT \
| READ_CONTROL)
#define FLOCK_MUTANT_ACCESS (MUTANT_QUERY_STATE \
| SYNCHRONIZE \
| READ_CONTROL)
#define FLOCK_EVENT_ACCESS (EVENT_QUERY_STATE \
| SYNCHRONIZE \
| READ_CONTROL)
#define SD_MIN_SIZE (sizeof (SECURITY_DESCRIPTOR) + MAX_DACL_LEN (1))
#define everyone_sd(access) (_everyone_sd (alloca (SD_MIN_SIZE), (access)))
PSECURITY_DESCRIPTOR
_everyone_sd (void *buf, ACCESS_MASK access)
{
PSECURITY_DESCRIPTOR psd = (PSECURITY_DESCRIPTOR) buf;
if (psd)
{
InitializeSecurityDescriptor (psd, SECURITY_DESCRIPTOR_REVISION);
PACL dacl = (PACL) (psd + 1);
InitializeAcl (dacl, MAX_DACL_LEN (1), ACL_REVISION);
if (!AddAccessAllowedAce (dacl, ACL_REVISION, access,
well_known_world_sid))
{
debug_printf ("AddAccessAllowedAce: %lu", GetLastError ());
return NULL;
}
LPVOID ace;
if (!FindFirstFreeAce (dacl, &ace))
{
debug_printf ("FindFirstFreeAce: %lu", GetLastError ());
return NULL;
}
dacl->AclSize = (char *) ace - (char *) dacl;
SetSecurityDescriptorDacl (psd, TRUE, dacl, FALSE);
}
return psd;
}
/* This function returns a handle to the top-level directory in the global
NT namespace used to implement advisory locking. */
static HANDLE
get_lock_parent_dir ()
{
static HANDLE dir;
UNICODE_STRING uname;
OBJECT_ATTRIBUTES attr;
NTSTATUS status;
INODE_LIST_LOCK();
if (!dir)
{
RtlInitUnicodeString (&uname, L"\\BaseNamedObjects\\cygwin-fcntl-lk");
InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
NULL, everyone_sd (FLOCK_PARENT_DIR_ACCESS));
status = NtCreateDirectoryObject (&dir, FLOCK_PARENT_DIR_ACCESS, &attr);
if (!NT_SUCCESS (status))
api_fatal ("NtCreateDirectoryObject(parent): %p", status);
}
INODE_LIST_UNLOCK ();
return dir;
}
/* Get the handle count of an object. */
static ULONG
get_obj_handle_count (HANDLE h)
@@ -507,15 +443,15 @@ inode_t::inode_t (__dev32_t dev, __ino64_t ino)
: i_lockf (NULL), i_all_lf (NULL), i_dev (dev), i_ino (ino)
{
HANDLE parent_dir;
WCHAR name[32];
WCHAR name[48];
UNICODE_STRING uname;
OBJECT_ATTRIBUTES attr;
NTSTATUS status;
parent_dir = get_lock_parent_dir ();
parent_dir = get_shared_parent_dir ();
/* Create a subdir which is named after the device and inode_t numbers
of the given file, in hex notation. */
int len = __small_swprintf (name, L"%08x-%016X", dev, ino);
int len = __small_swprintf (name, L"flock-%08x-%016X", dev, ino);
RtlInitCountedUnicodeString (&uname, name, len * sizeof (WCHAR));
InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
parent_dir, everyone_sd (FLOCK_INODE_DIR_ACCESS));

2
winsup/cygwin/mtinfo.h
View File

@@ -140,5 +140,3 @@ public:
void initialize ();
mtinfo_drive *drive (int num) { return &_drive[num]; }
};
extern void __stdcall mtinfo_init ();

7
winsup/cygwin/net.cc
View File

@@ -30,6 +30,7 @@ details. */
#include "cygerrno.h"
#include "security.h"
#include "cygwin/version.h"
#include "shared_info.h"
#include "perprocess.h"
#include "path.h"
#include "fhandler.h"
@@ -2140,8 +2141,6 @@ if_freenameindex (struct if_nameindex *ptr)
#define PORT_HIGH (IPPORT_RESERVED - 1)
#define NUM_PORTS (PORT_HIGH - PORT_LOW + 1)
LONG last_used_bindresvport __attribute__((section (".cygwin_dll_common"), shared)) = IPPORT_RESERVED;
extern "C" int
cygwin_bindresvport_sa (int fd, struct sockaddr *sa)
{
@@ -2199,11 +2198,11 @@ cygwin_bindresvport_sa (int fd, struct sockaddr *sa)
for (int i = 0; i < NUM_PORTS; i++)
{
while ((myport = InterlockedExchange (&last_used_bindresvport, 0)) == 0)
while ((myport = InterlockedExchange (&cygwin_shared->last_used_bindresvport, 0)) == 0)
low_priority_sleep (0);
if (--myport < PORT_LOW)
myport = PORT_HIGH;
InterlockedExchange (&last_used_bindresvport, myport);
InterlockedExchange (&cygwin_shared->last_used_bindresvport, myport);
if (sa->sa_family == AF_INET6)
sin6->sin6_port = htons (myport);

33
winsup/cygwin/sec_helper.cc
View File

@@ -518,3 +518,36 @@ __sec_user (PVOID sa_buf, PSID sid1, PSID sid2, DWORD access2, BOOL inherit)
psa->bInheritHandle = inherit;
return psa;
}
/* Helper function to create an event security descriptor which only allows
specific access to everyone. Only the creating process has all access
rights. */
PSECURITY_DESCRIPTOR
_everyone_sd (void *buf, ACCESS_MASK access)
{
PSECURITY_DESCRIPTOR psd = (PSECURITY_DESCRIPTOR) buf;
if (psd)
{
InitializeSecurityDescriptor (psd, SECURITY_DESCRIPTOR_REVISION);
PACL dacl = (PACL) (psd + 1);
InitializeAcl (dacl, MAX_DACL_LEN (1), ACL_REVISION);
if (!AddAccessAllowedAce (dacl, ACL_REVISION, access,
well_known_world_sid))
{
debug_printf ("AddAccessAllowedAce: %lu", GetLastError ());
return NULL;
}
LPVOID ace;
if (!FindFirstFreeAce (dacl, &ace))
{
debug_printf ("FindFirstFreeAce: %lu", GetLastError ());
return NULL;
}
dacl->AclSize = (char *) ace - (char *) dacl;
SetSecurityDescriptorDacl (psd, TRUE, dacl, FALSE);
}
return psd;
}

4
winsup/cygwin/security.h
View File

@@ -20,6 +20,7 @@ details. */
#define MAX_SID_LEN 40
#define MAX_DACL_LEN(n) (sizeof (ACL) \
+ (n) * (sizeof (ACCESS_ALLOWED_ACE) - sizeof (DWORD) + MAX_SID_LEN))
#define SD_MIN_SIZE (sizeof (SECURITY_DESCRIPTOR) + MAX_DACL_LEN (1))
#define ACL_DEFAULT_SIZE 3072
#define NO_SID ((PSID)NULL)
@@ -421,6 +422,9 @@ extern SECURITY_ATTRIBUTES sec_none, sec_none_nih, sec_all, sec_all_nih;
extern SECURITY_ATTRIBUTES *__stdcall __sec_user (PVOID sa_buf, PSID sid1, PSID sid2,
DWORD access2, BOOL inherit)
__attribute__ ((regparm (3)));
extern PSECURITY_DESCRIPTOR _everyone_sd (void *buf, ACCESS_MASK access);
#define everyone_sd(access) (_everyone_sd (alloca (SD_MIN_SIZE), (access)))
extern bool sec_acl (PACL acl, bool original, bool admins, PSID sid1 = NO_SID,
PSID sid2 = NO_SID, DWORD access2 = 0);

85
winsup/cygwin/shared.cc
View File

@@ -22,20 +22,52 @@ details. */
#include "shared_info_magic.h"
#include "registry.h"
#include "cygwin_version.h"
#include "mtinfo.h"
#include "ntdll.h"
#include <alloca.h>
static shared_info cygwin_shared_area __attribute__((section (".cygwin_dll_common"), shared));
shared_info NO_COPY *cygwin_shared;
user_info NO_COPY *user_shared;
HANDLE NO_COPY cygwin_shared_h;
HANDLE NO_COPY cygwin_user_h;
/* This function returns a handle to the top-level directory in the global
NT namespace used to implement global objects including shared memory. */
#define CYG_SHARED_DIR_ACCESS (DIRECTORY_QUERY \
| DIRECTORY_TRAVERSE \
| DIRECTORY_CREATE_SUBDIRECTORY \
| DIRECTORY_CREATE_OBJECT \
| READ_CONTROL)
HANDLE
get_shared_parent_dir ()
{
static HANDLE dir;
UNICODE_STRING uname;
OBJECT_ATTRIBUTES attr;
NTSTATUS status;
if (!dir)
{
RtlInitUnicodeString (&uname, L"\\BaseNamedObjects\\cygwin-shared");
InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
NULL, everyone_sd (CYG_SHARED_DIR_ACCESS));
status = NtCreateDirectoryObject (&dir, CYG_SHARED_DIR_ACCESS, &attr);
if (!NT_SUCCESS (status))
api_fatal ("NtCreateDirectoryObject(parent): %p", status);
}
return dir;
}
char * __stdcall
shared_name (char *ret_buf, const char *str, int num, bool session_local)
shared_name (char *ret_buf, const char *str, int num)
{
extern bool _cygwin_testing;
__small_sprintf (ret_buf, "%s%s.%s.%d",
session_local ? "" : cygheap->shared_prefix,
get_shared_parent_dir ();
__small_sprintf (ret_buf, "%scygwin-shared\\%s.%s.%d",
cygheap->shared_prefix,
cygwin_version.shared_id, str, num);
if (_cygwin_testing)
strcat (ret_buf, cygwin_version.dll_build_date);
@@ -47,6 +79,10 @@ shared_name (char *ret_buf, const char *str, int num, bool session_local)
static ptrdiff_t offsets[] =
{
- pround (sizeof (shared_info))
- pround (sizeof (user_info))
- pround (sizeof (console_state))
- pround (sizeof (_pinfo)),
- pround (sizeof (user_info))
- pround (sizeof (console_state))
- pround (sizeof (_pinfo)),
@@ -80,44 +116,17 @@ open_shared (const char *name, int n, HANDLE& shared_h, DWORD size,
m = SH_JUSTOPEN;
else
{
/* Beginning with Windows 2003 Server, a process doesn't necessarily
have the right to create globally accessible shared memory. If so,
creating the shared memory will fail with ERROR_ACCESS_DENIED if the
user doesn't have the SeCreateGlobalPrivilege privilege. If that
happened, we retry to create a shared memory object locally. This
only allows to see the processes in the current user session, but
that's better than nothing. */
if (name)
mapname = shared_name (map_buf, name, n);
if (m == SH_JUSTOPEN)
{
shared_h = OpenFileMapping (access, FALSE, mapname);
if (!shared_h && wincap.has_create_global_privilege ()
&& GetLastError () == ERROR_FILE_NOT_FOUND)
shared_h = OpenFileMapping (access, FALSE, mapname + 7);
}
else
{
shared_h = CreateFileMapping (INVALID_HANDLE_VALUE, psa,
PAGE_READWRITE, 0, size, mapname);
switch (GetLastError ())
{
case ERROR_ALREADY_EXISTS:
m = SH_JUSTOPEN;
break;
case ERROR_ACCESS_DENIED:
if (wincap.has_create_global_privilege ())
{
shared_h = CreateFileMapping (INVALID_HANDLE_VALUE, psa,
PAGE_READWRITE, 0, size,
mapname + 7);
if (GetLastError () == ERROR_ALREADY_EXISTS)
m = SH_JUSTOPEN;
}
break;
}
}
if (shared_h)
/* ok! */;
else if (m != SH_JUSTOPEN)
@@ -230,6 +239,8 @@ shared_info::initialize ()
cb = sizeof (*this); /* Do last, after all shared memory initialization */
}
mt.initialize ();
if (cb != SHARED_INFO_CB)
system_printf ("size of shared memory region changed from %u to %u",
SHARED_INFO_CB, cb);
@@ -247,11 +258,17 @@ memory_init ()
cygheap->user.init ();
}
cygwin_shared = &cygwin_shared_area;
/* Initialize general shared memory */
shared_locations sh_cygwin_shared = SH_CYGWIN_SHARED;
cygwin_shared = (shared_info *) open_shared ("shared",
CYGWIN_VERSION_SHARED_DATA,
cygwin_shared_h,
sizeof (*cygwin_shared),
sh_cygwin_shared);
cygwin_shared->initialize ();
user_shared_initialize (false);
mtinfo_init ();
}
unsigned

16
winsup/cygwin/shared_info.h
View File

@@ -10,6 +10,8 @@ details. */
#include "tty.h"
#include "security.h"
#include "wsa_event.h"
#include "mtinfo.h"
/* Mount table entry */
@@ -121,9 +123,9 @@ public:
cygwin_version.api_minor)
#define SHARED_VERSION_MAGIC CYGWIN_VERSION_MAGIC (SHARED_MAGIC, SHARED_VERSION)
#define SHARED_INFO_CB 19992
#define SHARED_INFO_CB 63912
#define CURR_SHARED_MAGIC 0xb7048a88U
#define CURR_SHARED_MAGIC 0x419c874U
/* NOTE: Do not make gratuitous changes to the names or organization of the
below class. The layout is checksummed to determine compatibility between
@@ -137,8 +139,12 @@ class shared_info
bool heap_slop_inited;
unsigned heap_slop;
DWORD sys_mount_table_counter;
tty_list tty;
wsa_event wsa_events[NUM_SOCKS];
LONG socket_serial_number;
LONG last_used_bindresvport;
mtinfo mt;
void initialize ();
unsigned heap_chunk_size ();
unsigned heap_slop_size ();
@@ -151,6 +157,7 @@ extern HANDLE cygwin_user_h;
enum shared_locations
{
SH_CYGWIN_SHARED,
SH_USER_SHARED,
SH_SHARED_CONSOLE,
SH_MYSELF,
@@ -174,7 +181,8 @@ struct console_state
};
#endif
char *__stdcall shared_name (char *, const char *, int, bool = false);
HANDLE get_shared_parent_dir ();
char *__stdcall shared_name (char *, const char *, int);
void *__stdcall open_shared (const char *name, int n, HANDLE &shared_h, DWORD size,
shared_locations&, PSECURITY_ATTRIBUTES psa = &sec_all,
DWORD access = FILE_MAP_READ | FILE_MAP_WRITE);

25
winsup/cygwin/wsa_event.h Normal file
View File

@@ -0,0 +1,25 @@
/* wsa_event.h: type definition of a wsock event storage structure.
Copyright 2008 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _WSA_EVENT_H_
#define _WSA_EVENT_H_
/* All Cygwin processes together can share 2048 sockets. */
#define NUM_SOCKS (32768 / sizeof (wsa_event))
struct wsa_event
{
LONG serial_number;
long events;
int connect_errorcode;
pid_t owner;
};
#endif /* _WSA_EVENT_H_ */