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* cygserver.h (client_request::request_code_t): Add

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CYGSERVER_REQUEST_MSG and CYGSERVER_REQUEST_SEM.
	(admininstrator_group_sid): Add extern declaration.
	* cygserver_ipc.h: Rewrite.
	* cygserver_msg.h: New file.
	* cygserver_sem.h: New file.
	* cygserver_shm.h: More or less rewrite.
	* cygwin.din: Add msgctl, msgget, msgrcv, msgsnd, semctl, semget and
	semop.
	* msg.cc: Rewrite.
	* safe_memory.h: Remove.
	* sem.cc: Rewrite.
	* shm.cc: Rewrite.
	* include/cygwin/ipc.h: Use appropriate guard.
	(struct ipc_perm): Add seq.
	(IPCID_TO_IX): New define from BSD.
	(IPCID_TO_SEQ): Ditto.
	(IXSEQ_TO_IPCID): Ditto.
	(IPC_R): Ditto.
	(IPC_W): Ditto.
	(IPC_M): Ditto.
	* include/cygwin/msg.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(msgqnum_t): Define unsigned.
	(msglen_t): Ditto.
	(struct msqid_ds): Add msg_first and msg_last.
	(struct msginfo): Remove msgpool. Add msgssz and msgseg.
	* include/cygwin/sem.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(SEM_UNDO): Define appropriately.
	(struct semid_ds): Add sem_base.
	(struct seminfo): Add semmap and semusz.
	(SEM_A): New define from BSD.
	(SEM_R): Ditto.
	(SEM_ALLOC): Ditto.
	(union semun): Define.
	* include/cygwin/shm.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(SHMLBA): Define using cygwin_internal(CW_GET_SHMLBA) call.
	(struct shmid_ds): Add shm_internal.
	(struct shm_info): Rename shm_ids to used_ids as in BSD.  Add define
	for shm_ids.
	* include/cygwin/sysproto.h: New file.
	* include/cygwin/version.h: Bump API minor number.
	* include/sys/ipc.h: New file.
	* include/sys/msg.h: New file.
	* include/sys/queue.h: New file from BSD.
	* include/sys/sem.h: New file.
	* include/sys/shm.h: New file.
	* include/sys/sysproto.h: New file.
This commit is contained in:
Corinna Vinschen
2003-11-19 18:50:23 +00:00
parent 282113ba89
commit a6df500f7d
24 changed files with 1824 additions and 929 deletions
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118
winsup/cygwin/cygserver_ipc.h
View File

@ -1,8 +1,6 @@
/* cygserver_ipc.h
Copyright 2002 Red Hat, Inc.
Originally written by Conrad Scott <conrad.scott@dsl.pipex.com>
Copyright 2002, 2003 Red Hat, Inc.
This file is part of Cygwin.
@ -13,72 +11,72 @@ details. */
#ifndef __CYGSERVER_IPC_H__
#define __CYGSERVER_IPC_H__
#include <assert.h>
#include <limits.h> /* For OPEN_MAX. */
/*
* The sysv ipc id's (msgid, semid, shmid) are integers arranged such
* that they no subsystem will generate the same id as some other
* subsystem; nor do these ids overlap file descriptors (the other
* common integer ids). Since Cygwin can allocate more than OPEN_MAX
* file descriptors, it can't be guaranteed not to overlap, but it
* should help catch some errors.
*
* msgid's: OPEN_MAX, OPEN_MAX + 3, OPEN_MAX + 6, . . .
* semid's: OPEN_MAX + 1, OPEN_MAX + 4, OPEN_MAX + 7, . . .
* shmid's: OPEN_MAX + 2, OPEN_MAX + 5, OPEN_MAX + 8, . . .
*
* To further ensure that ids are unique, if ipc objects are created
* and destroyed and then re-created, they are given new ids by
* munging the basic id (as above) with a sequence number.
*
* Internal ipc id's, which are 0, 1, ... within each subsystem (and
* not munged with a sequence number), are used solely by the ipcs(8)
* interface.
* Datastructure which is part of any IPC input parameter block.
*/
struct vmspace {
void *vm_map; /* UNUSED */
struct shmmap_state *vm_shm;
};
enum ipc_subsys_t
{
IPC_MSGOP = 0,
IPC_SEMOP = 1,
IPC_SHMOP = 2,
IPC_SUBSYS_COUNT
struct proc {
pid_t cygpid;
DWORD winpid;
__uid32_t uid;
__gid32_t gid;
int gidcnt;
__gid32_t *gidlist;
bool is_admin;
struct vmspace *p_vmspace;
};
#ifdef __INSIDE_CYGWIN__
inline void
ipc_set_proc_info (proc &blk)
{
blk.cygpid = getpid ();
blk.winpid = GetCurrentProcessId ();
blk.uid = geteuid32 ();
blk.gid = getegid32 ();
blk.gidcnt = 0;
blk.gidlist = NULL;
blk.is_admin = false;
}
#endif /* __INSIDE_CYGWIN__ */
#ifndef __INSIDE_CYGWIN__
class ipc_retval {
private:
union {
int i;
unsigned int u;
vm_offset_t off;
vm_object_t obj;
};
/*
* IPCMNI - The absolute maximum number of simultaneous ipc ids for
* any one subsystem.
*/
public:
ipc_retval (int ni) { i = ni; }
enum
{
IPCMNI = 0x10000 // Must be a power of two.
};
operator int () const { return i; }
int operator = (int ni) { return i = ni; }
inline int
ipc_int2ext (const int intid, const ipc_subsys_t subsys, long & sequence)
{
assert (0 <= intid && intid < IPCMNI);
operator unsigned int () const { return u; }
unsigned int operator = (unsigned int nu) { return u = nu; }
const long tmp = InterlockedIncrement (&sequence);
operator vm_offset_t () const { return off; }
vm_offset_t operator = (vm_offset_t noff) { return off = noff; }
return (((tmp & 0x7fff) << 16)
| (OPEN_MAX + (intid * IPC_SUBSYS_COUNT) + subsys));
}
operator vm_object_t () const { return obj; }
vm_object_t operator = (vm_object_t nobj) { return obj = nobj; }
};
inline int
ipc_ext2int_subsys (const int extid)
{
return ((extid & (IPCMNI - 1)) - OPEN_MAX) % IPC_SUBSYS_COUNT;
}
inline int
ipc_ext2int (const int extid, const ipc_subsys_t subsys)
{
if (ipc_ext2int_subsys (extid) != subsys)
return -1;
else
return ((extid & (IPCMNI - 1)) - OPEN_MAX) / IPC_SUBSYS_COUNT;
}
struct thread {
class process *client;
proc *ipcblk;
ipc_retval td_retval[2];
};
#define td_proc ipcblk
#define p_pid cygpid
#endif
#endif /* __CYGSERVER_IPC_H__ */