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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

56
winsup/cygwin/ChangeLog
View File

@@ -1,3 +1,59 @@
2003-11-19 Corinna Vinschen <corinna@vinschen.de>
* cygserver.h (client_request::request_code_t): Add
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.
2003-11-19 Corinna Vinschen <corinna@vinschen.de>
* dtable.cc (build_fh_pc): Resurrect accidentally removed

6
winsup/cygwin/cygserver.h
View File

@@ -48,6 +48,8 @@ protected:
CYGSERVER_REQUEST_GET_VERSION,
CYGSERVER_REQUEST_SHUTDOWN,
CYGSERVER_REQUEST_ATTACH_TTY,
CYGSERVER_REQUEST_MSG,
CYGSERVER_REQUEST_SEM,
CYGSERVER_REQUEST_SHM,
CYGSERVER_REQUEST_LAST
} request_code_t;
@@ -178,6 +180,10 @@ private:
#endif
};
#ifndef __INSIDE_CYGWIN__
extern PSID admininstrator_group_sid;
#endif
extern bool check_cygserver_available ();
extern void cygserver_init ();

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__ */

91
winsup/cygwin/cygserver_msg.h Normal file
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@@ -0,0 +1,91 @@
/* cygserver_msg.h: Single unix specification IPC interface for Cygwin.
Copyright 2003 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 __CYGSERVER_MSG_H__
#define __CYGSERVER_MSG_H__
#include <sys/types.h>
#include <sys/sysproto.h>
#ifndef _KERNEL
#define _KERNEL 1
#endif
#include <cygwin/msg.h>
#include "cygserver.h"
#include "cygserver_ipc.h"
#ifndef __INSIDE_CYGWIN__
class transport_layer_base;
class process_cache;
#endif
class client_request_msg : public client_request
{
friend class client_request;
public:
enum msgop_t
{
MSGOP_msgctl,
MSGOP_msgget,
MSGOP_msgrcv,
MSGOP_msgsnd
};
private:
union
{
struct
{
msgop_t msgop;
proc ipcblk;
union
{
struct msgctl_args ctlargs;
struct msgget_args getargs;
struct msgrcv_args rcvargs;
struct msgsnd_args sndargs;
};
} in;
union {
int ret;
ssize_t rcv;
} out;
} _parameters;
#ifndef __INSIDE_CYGWIN__
client_request_msg ();
virtual void serve (transport_layer_base *, process_cache *);
#endif
public:
#ifdef __INSIDE_CYGWIN__
client_request_msg (int, int, struct msqid_ds *); // msgctl
client_request_msg (key_t, int); // msgget
client_request_msg (int, void *, size_t, long, int); // msgrcv
client_request_msg (int, const void *, size_t, int); // msgsnd
#endif
int retval (void) const { return _parameters.out.ret; }
ssize_t rcvval (void) const { return _parameters.out.rcv; }
};
#ifndef __INSIDE_CYGWIN__
int msginit (void);
int msgunload (void);
int msgctl (struct thread *, struct msgctl_args *);
int msgget (struct thread *, struct msgget_args *);
int msgsnd (struct thread *, struct msgsnd_args *);
int msgrcv (struct thread *, struct msgrcv_args *);
#endif
#endif /* __CYGSERVER_MSG_H__ */

87
winsup/cygwin/cygserver_sem.h Normal file
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@@ -0,0 +1,87 @@
/* cygserver_sem.h: Single unix specification IPC interface for Cygwin.
Copyright 2003 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 __CYGSERVER_SEM_H__
#define __CYGSERVER_SEM_H__
#include <sys/types.h>
#include <sys/sysproto.h>
#ifndef _KERNEL
#define _KERNEL 1
#endif
#include <cygwin/sem.h>
#include "cygserver.h"
#include "cygserver_ipc.h"
#ifndef __INSIDE_CYGWIN__
class transport_layer_base;
class process_cache;
#endif
class client_request_sem : public client_request
{
friend class client_request;
public:
enum semop_t
{
SEMOP_semctl,
SEMOP_semget,
SEMOP_semop
};
private:
union
{
struct
{
semop_t semop;
proc ipcblk;
union
{
struct semctl_args ctlargs;
struct semget_args getargs;
struct semop_args opargs;
};
} in;
union {
int ret;
} out;
} _parameters;
#ifndef __INSIDE_CYGWIN__
client_request_sem ();
virtual void serve (transport_layer_base *, process_cache *);
#endif
public:
#ifdef __INSIDE_CYGWIN__
client_request_sem (int, int, int, union semun *); // semctl
client_request_sem (key_t, int, int); // semget
client_request_sem (int, struct sembuf *, size_t); // semop
#endif
int retval (void) const { return _parameters.out.ret; }
};
#ifndef __INSIDE_CYGWIN__
int seminit (void);
int semunload (void);
void semexit_myhook(void *arg, struct proc *p);
int semctl (struct thread *, struct semctl_args *);
int semget (struct thread *, struct semget_args *);
int semop (struct thread *, struct semop_args *);
#endif
#endif /* __CYGSERVER_SEM_H__ */

137
winsup/cygwin/cygserver_shm.h
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@@ -1,9 +1,6 @@
/* cygserver_shm.h: Single unix specification IPC interface for Cygwin.
Copyright 2002 Red Hat, Inc.
Written by Conrad Scott <conrad.scott@dsl.pipex.com>.
Based on code by Robert Collins <robert.collins@hotmail.com>.
Copyright 2003 Red Hat, Inc.
This file is part of Cygwin.
@@ -15,38 +12,14 @@ details. */
#define __CYGSERVER_SHM_H__
#include <sys/types.h>
#include <sys/sysproto.h>
#ifndef _KERNEL
#define _KERNEL 1
#endif
#include <cygwin/shm.h>
#include <assert.h>
#include <limits.h>
#include "cygserver_ipc.h"
#include "cygserver.h"
/*---------------------------------------------------------------------------*
* Values for the shminfo entries.
*
* Nb. The values are segregated between two enums so that the `small'
* values aren't promoted to `unsigned long' equivalents.
*---------------------------------------------------------------------------*/
enum
{
SHMMAX = ULONG_MAX,
SHMSEG = ULONG_MAX,
SHMALL = ULONG_MAX
};
enum
{
SHMMIN = 1,
SHMMNI = IPCMNI // Must be <= IPCMNI.
};
/*---------------------------------------------------------------------------*
* class client_request_shm
*---------------------------------------------------------------------------*/
#include "cygserver_ipc.h"
#ifndef __INSIDE_CYGWIN__
class transport_layer_base;
@@ -63,85 +36,63 @@ public:
SHMOP_shmat,
SHMOP_shmctl,
SHMOP_shmdt,
SHMOP_shmget
SHMOP_shmget,
SHMOP_shmfork /* Called on fixup_after_fork */
};
#ifdef __INSIDE_CYGWIN__
client_request_shm (int shmid, int shmflg); // shmat
client_request_shm (int shmid, int cmd, const struct shmid_ds *); // shmctl
client_request_shm (int shmid); // shmdt
client_request_shm (key_t, size_t, int shmflg); // shmget
#endif
// Accessors for out parameters.
int shmid () const
{
assert (!error_code ());
return _parameters.out.shmid;
}
HANDLE hFileMap () const
{
assert (!error_code ());
return _parameters.out.hFileMap;
}
const struct shmid_ds & ds () const
{
assert (!error_code ());
return _parameters.out.ds;
}
const struct shminfo & shminfo () const
{
assert (!error_code ());
return _parameters.out.shminfo;
}
const struct shm_info & shm_info () const
{
assert (!error_code ());
return _parameters.out.shm_info;
}
private:
union
{
struct
{
shmop_t shmop;
key_t key;
size_t size;
int shmflg;
int shmid;
int cmd;
pid_t cygpid;
DWORD winpid;
__uid32_t uid;
__gid32_t gid;
struct shmid_ds ds;
proc ipcblk;
struct shmat_args atargs;
struct shmctl_args ctlargs;
struct shmdt_args dtargs;
struct shmget_args getargs;
struct proc forkargs;
} in;
struct {
int shmid;
union
{
HANDLE hFileMap;
struct shmid_ds ds;
struct shminfo shminfo;
struct shm_info shm_info;
union {
int ret;
vm_offset_t ptr;
};
vm_object_t obj;
} out;
} _parameters;
#ifndef __INSIDE_CYGWIN__
client_request_shm ();
#endif
#ifndef __INSIDE_CYGWIN__
virtual void serve (transport_layer_base *, process_cache *);
#endif
public:
#ifdef __INSIDE_CYGWIN__
client_request_shm (int, const void *, int); // shmat
client_request_shm (int, int, struct shmid_ds *); // shmctl
client_request_shm (const void *); // shmdt
client_request_shm (key_t, size_t, int); // shmget
client_request_shm (proc *); // shmfork
#endif
int retval (void) const { return _parameters.out.ret; }
void *ptrval (void) const { return (void *)_parameters.out.ptr; }
vm_object_t objval (void) const { return _parameters.out.obj; }
};
#ifndef __INSIDE_CYGWIN__
void shminit (void);
int shmunload (void);
void shmexit_myhook (struct vmspace *vm);
int cygwin_shmfork_myhook (struct thread *, struct proc *);
int shmat (struct thread *, struct shmat_args *);
int shmctl (struct thread *, struct shmctl_args *);
int shmdt (struct thread *, struct shmdt_args *);
int shmget (struct thread *, struct shmget_args *);
#endif
#endif /* __CYGSERVER_SHM_H__ */

7
winsup/cygwin/cygwin.din
View File

@@ -910,6 +910,10 @@ mount
_mount = mount
mprotect
mrand48
msgctl
msgget
msgrcv
msgsnd
msync
munmap
nan
@@ -1131,6 +1135,9 @@ _seed48 = seed48
seekdir
_seekdir = seekdir
_seekdir64 = seekdir64
semctl
semget
semop
sem_close
sem_destroy
sem_getvalue

2
winsup/cygwin/fhandler_socket.cc
View File

@@ -1106,7 +1106,7 @@ fhandler_socket::close ()
solution but it helps in many cases. */
struct linger linger;
linger.l_onoff = 1;
linger.l_linger = 240; /* seconds. default 2MSL value according to MSDN. */
linger.l_linger = 240; /* secs. default 2MSL value according to MSDN. */
setsockopt (get_socket (), SOL_SOCKET, SO_LINGER,
(const char *)&linger, sizeof linger);

17
winsup/cygwin/include/cygwin/ipc.h
View File

@@ -9,8 +9,8 @@ This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _SYS_IPC_H
#define _SYS_IPC_H
#ifndef _CYGWIN_IPC_H
#define _CYGWIN_IPC_H
#ifdef __cplusplus
extern "C"
@@ -25,6 +25,7 @@ struct ipc_perm
gid_t cgid; /* Creator's group ID. */
mode_t mode; /* Read/write permission. */
key_t key;
unsigned short seq;
};
/* Mode bits:
@@ -44,10 +45,20 @@ struct ipc_perm
#define IPC_STAT 0x1002 /* Get options. */
#define IPC_INFO 0x1003 /* For ipcs(8). */
#ifdef _KERNEL
#define IPCID_TO_IX(id) ((id) & 0xffff)
#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff)
#define IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff))
#define IPC_R 000400 /* read permission */
#define IPC_W 000200 /* write/alter permission */
#define IPC_M 010000 /* permission to change control info */
#endif
key_t ftok (const char *path, int id);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_IPC_H */
#endif /* _CYGWIN_IPC_H */

48
winsup/cygwin/include/cygwin/msg.h
View File

@@ -9,8 +9,8 @@ This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _SYS_MSG_H
#define _SYS_MSG_H
#ifndef _CYGWIN_MSG_H
#define _CYGWIN_MSG_H
#include <cygwin/ipc.h>
@@ -23,18 +23,20 @@ extern "C"
*/
#define MSG_NOERROR 0x01 /* No error if big message. */
#ifdef _KERNEL
/* Command definitions for the semctl () function:
*/
#define MSG_STAT 0x2000 /* For ipcs(8) */
#define MSG_INFO 0x2001 /* For ipcs(8) */
#endif /* _KERNEL */
/* Used for the number of messages in the message queue.
*/
typedef long int msgqnum_t;
typedef unsigned long msgqnum_t;
/* Used for the number of bytes allowed in a message queue.
*/
typedef long int msglen_t;
typedef unsigned long msglen_t;
struct msqid_ds
{
@@ -47,38 +49,46 @@ struct msqid_ds
timestruc_t msg_stim; /* Time of last msgsnd (). */
timestruc_t msg_rtim; /* Time of last msgrcv (). */
timestruc_t msg_ctim; /* Time of last change. */
#ifdef _KERNEL
struct msg *msg_first;
struct msg *msg_last;
#else
long msg_spare4[2];
#endif /* _KERNEL */
};
#define msg_stime msg_stim.tv_sec
#define msg_rtime msg_rtim.tv_sec
#define msg_ctime msg_ctim.tv_sec
#ifdef _KERNEL
/* Buffer type for msgctl (IPC_INFO, ...) as used by ipcs(8).
*/
struct msginfo
{
unsigned long msgpool; /* Maximum number of message bytes,
system wide. */
unsigned long msgmax; /* Maximum number of bytes per
message. */
unsigned long msgmnb; /* Maximum number of bytes on any one
message queue. */
unsigned long msgmni; /* Maximum number of message queues,
system wide. */
unsigned long msgtql; /* Maximum number of messages, system
wide. */
unsigned long msg_spare[4];
long msgmax; /* Maximum number of bytes per
message. */
long msgmnb; /* Maximum number of bytes on any one
message queue. */
long msgmni; /* Maximum number of message queues,
system wide. */
long msgtql; /* Maximum number of messages, system
wide. */
long msgssz; /* Size of a message segment, must be
small power of 2 greater than 4. */
long msgseg; /* Number of message segments */
long msg_spare[2];
};
/* Buffer type for msgctl (MSG_INFO, ...) as used by ipcs(8).
*/
struct msg_info
{
unsigned long msg_ids; /* Number of allocated queues. */
unsigned long msg_num; /* Number of messages, system wide. */
unsigned long msg_tot; /* Size in bytes of messages, system wide. */
long msg_ids; /* Number of allocated queues. */
long msg_num; /* Number of messages, system wide. */
long msg_tot; /* Size in bytes of messages, system wide. */
};
#endif /* _KERNEL */
int msgctl (int msqid, int cmd, struct msqid_ds *buf);
int msgget (key_t key, int msgflg);
@@ -89,4 +99,4 @@ int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg);
}
#endif
#endif /* _SYS_MSG_H */
#endif /* _CYGWIN_MSG_H */

75
winsup/cygwin/include/cygwin/sem.h
View File

@@ -9,8 +9,8 @@ This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _SYS_SEM_H
#define _SYS_SEM_H
#ifndef _CYGWIN_SEM_H
#define _CYGWIN_SEM_H
#include <cygwin/ipc.h>
@@ -21,7 +21,7 @@ extern "C"
/* Semaphore operation flags:
*/
#define SEM_UNDO /* Set up adjust on exit entry. */
#define SEM_UNDO 010000 /* Set up adjust on exit entry. */
/* Command definitions for the semctl () function:
*/
@@ -33,8 +33,10 @@ extern "C"
#define SETVAL 0x3005 /* Set semval. */
#define SETALL 0x3006 /* Set all cases of semval. */
#ifdef _KERNEL
#define SEM_STAT 0x3010 /* For ipcs(8). */
#define SEM_INFO 0x3011 /* For ipcs(8). */
#endif /* _KERNEL */
struct semid_ds
{
@@ -42,7 +44,12 @@ struct semid_ds
unsigned short sem_nsems; /* Number of semaphores in set. */
timestruc_t sem_otim; /* Last semop () time. */
timestruc_t sem_ctim; /* Last time changed by semctl (). */
#ifdef _KERNEL
struct sem *sem_base; /* pointer to first semaphore in set */
long sem_spare4[1];
#else
long sem_spare4[2];
#endif /* _KERNEL */
};
#define sem_otime sem_otim.tv_sec
@@ -55,35 +62,61 @@ struct sembuf
short sem_flg; /* Operation flags. */
};
#ifdef _KERNEL
/* Buffer type for semctl (IPC_INFO, ...) as used by ipcs(8).
*/
struct seminfo
{
unsigned long semmni; /* Maximum number of unique semaphore
sets, system wide. */
unsigned long semmns; /* Maximum number of semaphores,
system wide. */
unsigned long semmsl; /* Maximum number of semaphores per
semaphore set. */
unsigned long semopm; /* Maximum number of operations per
semop call. */
unsigned long semmnu; /* Maximum number of undo structures,
system wide. */
unsigned long semume; /* Maximum number of undo entries per
undo structure. */
unsigned long semvmx; /* Maximum semaphore value. */
unsigned long semaem; /* Maximum adjust-on-exit value. */
unsigned long sem_spare[4];
long semmni; /* Maximum number of unique semaphore
sets, system wide. */
long semmns; /* Maximum number of semaphores,
system wide. */
long semmsl; /* Maximum number of semaphores per
semaphore set. */
long semopm; /* Maximum number of operations per
semop call. */
long semmnu; /* Maximum number of undo structures,
system wide. */
long semume; /* Maximum number of undo entries per
undo structure. */
long semvmx; /* Maximum semaphore value. */
long semaem; /* Maximum adjust-on-exit value. */
long semmap; /* # of entries in semaphore map */
long semusz; /* size in bytes of undo structure */
long sem_spare[2];
};
/* Buffer type for semctl (SEM_INFO, ...) as used by ipcs(8).
*/
struct sem_info
{
unsigned long sem_ids; /* Number of allocated semaphore sets. */
unsigned long sem_num; /* Number of allocated semaphores. */
long sem_ids; /* Number of allocated semaphore sets. */
long sem_num; /* Number of allocated semaphores. */
};
/* Permission flags */
#define SEM_A IPC_W /* alter permission */
#define SEM_R IPC_R /* read permission */
/* Internally used mode bits. */
#define SEM_ALLOC 01000 /* semaphore is allocated */
#endif /* _KERNEL */
#ifdef _KERNEL
/* According to SUSv3, "the fourth argument [to semctl()] is optional and
depends upon the operation requested. If required, it is of type
union semun, which the application shall explicitly declare:" */
union semun {
int val; /* value for SETVAL */
struct semid_ds *buf; /* buffer for IPC_STAT, IPC_SET */
unsigned short *array; /* array for GETALL, SETALL */
};
/* Therefore this union is only declared here if building internal code.
_KERNEL must not be defined in exernal applications! Declare union
semun explicitely as required by SUSv3, please. */
#endif /* _KERNEL */
int semctl (int semid, int semnum, int cmd, ...);
int semget (key_t key, int nsems, int semflg);
int semop (int semid, struct sembuf *sops, size_t nsops);
@@ -92,4 +125,4 @@ int semop (int semid, struct sembuf *sops, size_t nsops);
}
#endif
#endif /* _SYS_SEM_H */
#endif /* _CYGWIN_SEM_H */

74
winsup/cygwin/include/cygwin/shm.h
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@@ -9,30 +9,34 @@ This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _SYS_SHM_H
#define _SYS_SHM_H
#ifndef _CYGWIN_SHM_H
#define _CYGWIN_SHM_H
#include <cygwin/ipc.h>
#include <sys/cygwin.h>
#ifdef __cplusplus
extern "C"
{
#endif
/* 64 Kb was hardcoded for x86. MS states this may change, but we need
* it in the header file.
*/
#define SHMLBA 65536 /* Segment low boundary address multiple. */
/* Segment low boundary address multiple.
*
* 64 Kb was hardcoded for x86. MS states this may change so the constant
* expression is replaced by a function call returning the correct value. */
#define SHMLBA (cygwin_internal (CW_GET_SHMLBA))
/* Shared memory operation flags:
*/
#define SHM_RDONLY 0x01 /* Attach read-only (else read-write). */
#define SHM_RND 0x02 /* Round attach address to SHMLBA. */
#ifdef _KERNEL
/* Command definitions for the semctl () function:
*/
#define SHM_STAT 0x4000 /* For ipcs(8) */
#define SHM_INFO 0x4001 /* For ipcs(8) */
#endif /* _KERNEL */
/* Unsigned integer used for the number of current attaches.
*/
@@ -40,47 +44,55 @@ typedef unsigned int shmatt_t;
struct shmid_ds
{
struct ipc_perm shm_perm; /* Operation permission structure. */
size_t shm_segsz; /* Size of segment in bytes. */
pid_t shm_lpid; /* Process ID of last operation. */
pid_t shm_cpid; /* Process ID of creator. */
shmatt_t shm_nattch; /* Number of current attaches. */
timestruc_t shm_atim; /* Time of last shmat (). */
timestruc_t shm_dtim; /* Time of last shmdt (). */
timestruc_t shm_ctim; /* Time of last change by shmctl (). */
long shm_spare4[2];
struct ipc_perm shm_perm; /* Operation permission structure. */
size_t shm_segsz; /* Size of segment in bytes. */
pid_t shm_lpid; /* Process ID of last operation. */
pid_t shm_cpid; /* Process ID of creator. */
shmatt_t shm_nattch;/* Number of current attaches. */
timestruc_t shm_atim; /* Time of last shmat (). */
timestruc_t shm_dtim; /* Time of last shmdt (). */
timestruc_t shm_ctim; /* Time of last change by shmctl (). */
#ifdef _KERNEL
struct shm_handle *shm_internal;
long shm_spare4[1];
#else
long shm_spare4[2];
#endif /* _KERNEL */
};
#define shm_atime shm_atim.tv_sec
#define shm_dtime shm_dtim.tv_sec
#define shm_ctime shm_ctim.tv_sec
#ifdef _KERNEL
/* Buffer type for shmctl (IPC_INFO, ...) as used by ipcs(8).
*/
struct shminfo
{
unsigned long shmmax; /* Maximum size in bytes of a shared
memory segment. */
unsigned long shmmin; /* Minimum size in bytes of a shared
memory segment. */
unsigned long shmmni; /* Maximum number of shared memory
segments, system wide. */
unsigned long shmseg; /* Maximum number of shared memory
segments attached per process. */
unsigned long shmall; /* Maximum number of bytes of shared
memory, system wide. */
unsigned long shm_spare[4];
long shmmax; /* Maximum size in bytes of a shared
memory segment. */
long shmmin; /* Minimum size in bytes of a shared
memory segment. */
long shmmni; /* Maximum number of shared memory
segments, system wide. */
long shmseg; /* Maximum number of shared memory
segments attached per process. */
long shmall; /* Maximum number of bytes of shared
memory, system wide. */
long shm_spare[4];
};
/* Buffer type for shmctl (SHM_INFO, ...) as used by ipcs(8).
*/
struct shm_info
{
unsigned long shm_ids; /* Number of allocated segments. */
unsigned long shm_tot; /* Size in bytes of allocated segments. */
unsigned long shm_atts; /* Number of attached segments, system
wide. */
#define shm_ids used_ids
long used_ids; /* Number of allocated segments. */
long shm_tot; /* Size in bytes of allocated segments. */
long shm_atts; /* Number of attached segments, system
wide. */
};
#endif /* _KERNEL */
void *shmat (int shmid, const void *shmaddr, int shmflg);
int shmctl (int shmid, int cmd, struct shmid_ds *buf);
@@ -91,4 +103,4 @@ int shmget (key_t key, size_t size, int shmflg);
}
#endif
#endif /* _SYS_SHM_H */
#endif /* _CYGWIN_SHM_H */

94
winsup/cygwin/include/cygwin/sysproto.h Normal file
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@@ -0,0 +1,94 @@
/* cygwin/sysproto.h
Copyright 2003 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. */
/* cygwin/sysproto.h header file for Cygwin. */
#ifndef _CYGWIN_SYSPROTO_H
#define _CYGWIN_SYSPROTO_H
#define _SYS_SYSPROTO_H_ /* Keep it, used by BSD files */
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
struct msgctl_args {
int msqid;
int cmd;
struct msqid_ds *buf;
};
struct msgget_args {
key_t key;
int msgflg;
};
struct msgrcv_args {
int msqid;
void *msgp;
size_t msgsz;
long msgtyp;
int msgflg;
};
struct msgsnd_args {
int msqid;
const void *msgp;
size_t msgsz;
int msgflg;
};
struct semctl_args {
int semid;
int semnum;
int cmd;
union semun *arg;
};
struct semget_args {
key_t key;
int nsems;
int semflg;
};
struct semop_args {
int semid;
struct sembuf *sops;
size_t nsops;
};
struct shmat_args {
int shmid;
const void *shmaddr;
int shmflg;
};
struct shmctl_args {
int shmid;
int cmd;
struct shmid_ds *buf;
};
struct shmdt_args {
const void *shmaddr;
};
struct shmget_args {
key_t key;
size_t size;
int shmflg;
};
#ifdef __cplusplus
}
#endif
#endif /* _CYGWIN_SYSPROTO_H */

3
winsup/cygwin/include/cygwin/version.h
View File

@@ -228,13 +228,14 @@ details. */
101: Export err, errx, verr, verrx, warn, warnx, vwarn, vwarnx.
102: CW_GET_UID_FROM_SID and CW_GET_GID_FROM_SID addition to external.cc.
103: Export getprogname, setprogname.
104: Export msgctl, msgget, msgrcv, msgsnd, semctl, semget, semop.
*/
/* Note that we forgot to bump the api for ualarm, strtoll, strtoull */
#define CYGWIN_VERSION_API_MAJOR 0
#define CYGWIN_VERSION_API_MINOR 103
#define CYGWIN_VERSION_API_MINOR 104
/* There is also a compatibity version number associated with the
shared memory regions. It is incremented when incompatible

18
winsup/cygwin/include/sys/ipc.h Normal file
View File

@@ -0,0 +1,18 @@
/* sys/ipc.h
Copyright 2003 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. */
/* sys/ipc.h header file for Cygwin. */
#ifndef _SYS_IPC_H
#define _SYS_IPC_H
#include <cygwin/ipc.h>
#endif /* _SYS_IPC_H */

18
winsup/cygwin/include/sys/msg.h Normal file
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@@ -0,0 +1,18 @@
/* sys/msg.h
Copyright 2003 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. */
/* sys/msg.h header file for Cygwin. */
#ifndef _SYS_MSG_H
#define _SYS_MSG_H
#include <cygwin/msg.h>
#endif /* _SYS_MSG_H */

557
winsup/cygwin/include/sys/queue.h Normal file
View File

@@ -0,0 +1,557 @@
/*
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)queue.h 8.5 (Berkeley) 8/20/94
* $FreeBSD: /repoman/r/ncvs/src/sys/sys/queue.h,v 1.56 2003/08/14 14:49:26 kan Exp $
*/
#ifndef _SYS_QUEUE_H_
#define _SYS_QUEUE_H_
#include <sys/cdefs.h>
/*
* This file defines four types of data structures: singly-linked lists,
* singly-linked tail queues, lists and tail queues.
*
* A singly-linked list is headed by a single forward pointer. The elements
* are singly linked for minimum space and pointer manipulation overhead at
* the expense of O(n) removal for arbitrary elements. New elements can be
* added to the list after an existing element or at the head of the list.
* Elements being removed from the head of the list should use the explicit
* macro for this purpose for optimum efficiency. A singly-linked list may
* only be traversed in the forward direction. Singly-linked lists are ideal
* for applications with large datasets and few or no removals or for
* implementing a LIFO queue.
*
* A singly-linked tail queue is headed by a pair of pointers, one to the
* head of the list and the other to the tail of the list. The elements are
* singly linked for minimum space and pointer manipulation overhead at the
* expense of O(n) removal for arbitrary elements. New elements can be added
* to the list after an existing element, at the head of the list, or at the
* end of the list. Elements being removed from the head of the tail queue
* should use the explicit macro for this purpose for optimum efficiency.
* A singly-linked tail queue may only be traversed in the forward direction.
* Singly-linked tail queues are ideal for applications with large datasets
* and few or no removals or for implementing a FIFO queue.
*
* A list is headed by a single forward pointer (or an array of forward
* pointers for a hash table header). The elements are doubly linked
* so that an arbitrary element can be removed without a need to
* traverse the list. New elements can be added to the list before
* or after an existing element or at the head of the list. A list
* may only be traversed in the forward direction.
*
* A tail queue is headed by a pair of pointers, one to the head of the
* list and the other to the tail of the list. The elements are doubly
* linked so that an arbitrary element can be removed without a need to
* traverse the list. New elements can be added to the list before or
* after an existing element, at the head of the list, or at the end of
* the list. A tail queue may be traversed in either direction.
*
* For details on the use of these macros, see the queue(3) manual page.
*
*
* SLIST LIST STAILQ TAILQ
* _HEAD + + + +
* _HEAD_INITIALIZER + + + +
* _ENTRY + + + +
* _INIT + + + +
* _EMPTY + + + +
* _FIRST + + + +
* _NEXT + + + +
* _PREV - - - +
* _LAST - - + +
* _FOREACH + + + +
* _FOREACH_SAFE + + + +
* _FOREACH_REVERSE - - - +
* _FOREACH_REVERSE_SAFE - - - +
* _INSERT_HEAD + + + +
* _INSERT_BEFORE - + - +
* _INSERT_AFTER + + + +
* _INSERT_TAIL - - + +
* _CONCAT - - + +
* _REMOVE_HEAD + - + -
* _REMOVE + + + +
*
*/
#define QUEUE_MACRO_DEBUG 0
#if QUEUE_MACRO_DEBUG
/* Store the last 2 places the queue element or head was altered */
struct qm_trace {
char * lastfile;
int lastline;
char * prevfile;
int prevline;
};
#define TRACEBUF struct qm_trace trace;
#define TRASHIT(x) do {(x) = (void *)-1;} while (0)
#define QMD_TRACE_HEAD(head) do { \
(head)->trace.prevline = (head)->trace.lastline; \
(head)->trace.prevfile = (head)->trace.lastfile; \
(head)->trace.lastline = __LINE__; \
(head)->trace.lastfile = __FILE__; \
} while (0)
#define QMD_TRACE_ELEM(elem) do { \
(elem)->trace.prevline = (elem)->trace.lastline; \
(elem)->trace.prevfile = (elem)->trace.lastfile; \
(elem)->trace.lastline = __LINE__; \
(elem)->trace.lastfile = __FILE__; \
} while (0)
#else
#define QMD_TRACE_ELEM(elem)
#define QMD_TRACE_HEAD(head)
#define TRACEBUF
#define TRASHIT(x)
#endif /* QUEUE_MACRO_DEBUG */
/*
* Singly-linked List declarations.
*/
#define SLIST_HEAD(name, type) \
struct name { \
struct type *slh_first; /* first element */ \
}
#define SLIST_HEAD_INITIALIZER(head) \
{ NULL }
#define SLIST_ENTRY(type) \
struct { \
struct type *sle_next; /* next element */ \
}
/*
* Singly-linked List functions.
*/
#define SLIST_EMPTY(head) ((head)->slh_first == NULL)
#define SLIST_FIRST(head) ((head)->slh_first)
#define SLIST_FOREACH(var, head, field) \
for ((var) = SLIST_FIRST((head)); \
(var); \
(var) = SLIST_NEXT((var), field))
#define SLIST_FOREACH_SAFE(var, head, field, tvar) \
for ((var) = SLIST_FIRST((head)); \
(var) && ((tvar) = SLIST_NEXT((var), field), 1); \
(var) = (tvar))
#define SLIST_FOREACH_PREVPTR(var, varp, head, field) \
for ((varp) = &SLIST_FIRST((head)); \
((var) = *(varp)) != NULL; \
(varp) = &SLIST_NEXT((var), field))
#define SLIST_INIT(head) do { \
SLIST_FIRST((head)) = NULL; \
} while (0)
#define SLIST_INSERT_AFTER(slistelm, elm, field) do { \
SLIST_NEXT((elm), field) = SLIST_NEXT((slistelm), field); \
SLIST_NEXT((slistelm), field) = (elm); \
} while (0)
#define SLIST_INSERT_HEAD(head, elm, field) do { \
SLIST_NEXT((elm), field) = SLIST_FIRST((head)); \
SLIST_FIRST((head)) = (elm); \
} while (0)
#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
#define SLIST_REMOVE(head, elm, type, field) do { \
if (SLIST_FIRST((head)) == (elm)) { \
SLIST_REMOVE_HEAD((head), field); \
} \
else { \
struct type *curelm = SLIST_FIRST((head)); \
while (SLIST_NEXT(curelm, field) != (elm)) \
curelm = SLIST_NEXT(curelm, field); \
SLIST_NEXT(curelm, field) = \
SLIST_NEXT(SLIST_NEXT(curelm, field), field); \
} \
} while (0)
#define SLIST_REMOVE_HEAD(head, field) do { \
SLIST_FIRST((head)) = SLIST_NEXT(SLIST_FIRST((head)), field); \
} while (0)
/*
* Singly-linked Tail queue declarations.
*/
#define STAILQ_HEAD(name, type) \
struct name { \
struct type *stqh_first;/* first element */ \
struct type **stqh_last;/* addr of last next element */ \
}
#define STAILQ_HEAD_INITIALIZER(head) \
{ NULL, &(head).stqh_first }
#define STAILQ_ENTRY(type) \
struct { \
struct type *stqe_next; /* next element */ \
}
/*
* Singly-linked Tail queue functions.
*/
#define STAILQ_CONCAT(head1, head2) do { \
if (!STAILQ_EMPTY((head2))) { \
*(head1)->stqh_last = (head2)->stqh_first; \
(head1)->stqh_last = (head2)->stqh_last; \
STAILQ_INIT((head2)); \
} \
} while (0)
#define STAILQ_EMPTY(head) ((head)->stqh_first == NULL)
#define STAILQ_FIRST(head) ((head)->stqh_first)
#define STAILQ_FOREACH(var, head, field) \
for((var) = STAILQ_FIRST((head)); \
(var); \
(var) = STAILQ_NEXT((var), field))
#define STAILQ_FOREACH_SAFE(var, head, field, tvar) \
for ((var) = STAILQ_FIRST((head)); \
(var) && ((tvar) = STAILQ_NEXT((var), field), 1); \
(var) = (tvar))
#define STAILQ_INIT(head) do { \
STAILQ_FIRST((head)) = NULL; \
(head)->stqh_last = &STAILQ_FIRST((head)); \
} while (0)
#define STAILQ_INSERT_AFTER(head, tqelm, elm, field) do { \
if ((STAILQ_NEXT((elm), field) = STAILQ_NEXT((tqelm), field)) == NULL)\
(head)->stqh_last = &STAILQ_NEXT((elm), field); \
STAILQ_NEXT((tqelm), field) = (elm); \
} while (0)
#define STAILQ_INSERT_HEAD(head, elm, field) do { \
if ((STAILQ_NEXT((elm), field) = STAILQ_FIRST((head))) == NULL) \
(head)->stqh_last = &STAILQ_NEXT((elm), field); \
STAILQ_FIRST((head)) = (elm); \
} while (0)
#define STAILQ_INSERT_TAIL(head, elm, field) do { \
STAILQ_NEXT((elm), field) = NULL; \
*(head)->stqh_last = (elm); \
(head)->stqh_last = &STAILQ_NEXT((elm), field); \
} while (0)
#define STAILQ_LAST(head, type, field) \
(STAILQ_EMPTY((head)) ? \
NULL : \
((struct type *) \
((char *)((head)->stqh_last) - __offsetof(struct type, field))))
#define STAILQ_NEXT(elm, field) ((elm)->field.stqe_next)
#define STAILQ_REMOVE(head, elm, type, field) do { \
if (STAILQ_FIRST((head)) == (elm)) { \
STAILQ_REMOVE_HEAD((head), field); \
} \
else { \
struct type *curelm = STAILQ_FIRST((head)); \
while (STAILQ_NEXT(curelm, field) != (elm)) \
curelm = STAILQ_NEXT(curelm, field); \
if ((STAILQ_NEXT(curelm, field) = \
STAILQ_NEXT(STAILQ_NEXT(curelm, field), field)) == NULL)\
(head)->stqh_last = &STAILQ_NEXT((curelm), field);\
} \
} while (0)
#define STAILQ_REMOVE_HEAD(head, field) do { \
if ((STAILQ_FIRST((head)) = \
STAILQ_NEXT(STAILQ_FIRST((head)), field)) == NULL) \
(head)->stqh_last = &STAILQ_FIRST((head)); \
} while (0)
#define STAILQ_REMOVE_HEAD_UNTIL(head, elm, field) do { \
if ((STAILQ_FIRST((head)) = STAILQ_NEXT((elm), field)) == NULL) \
(head)->stqh_last = &STAILQ_FIRST((head)); \
} while (0)
/*
* List declarations.
*/
#define LIST_HEAD(name, type) \
struct name { \
struct type *lh_first; /* first element */ \
}
#define LIST_HEAD_INITIALIZER(head) \
{ NULL }
#define LIST_ENTRY(type) \
struct { \
struct type *le_next; /* next element */ \
struct type **le_prev; /* address of previous next element */ \
}
/*
* List functions.
*/
#define LIST_EMPTY(head) ((head)->lh_first == NULL)
#define LIST_FIRST(head) ((head)->lh_first)
#define LIST_FOREACH(var, head, field) \
for ((var) = LIST_FIRST((head)); \
(var); \
(var) = LIST_NEXT((var), field))
#define LIST_FOREACH_SAFE(var, head, field, tvar) \
for ((var) = LIST_FIRST((head)); \
(var) && ((tvar) = LIST_NEXT((var), field), 1); \
(var) = (tvar))
#define LIST_INIT(head) do { \
LIST_FIRST((head)) = NULL; \
} while (0)
#define LIST_INSERT_AFTER(listelm, elm, field) do { \
if ((LIST_NEXT((elm), field) = LIST_NEXT((listelm), field)) != NULL)\
LIST_NEXT((listelm), field)->field.le_prev = \
&LIST_NEXT((elm), field); \
LIST_NEXT((listelm), field) = (elm); \
(elm)->field.le_prev = &LIST_NEXT((listelm), field); \
} while (0)
#define LIST_INSERT_BEFORE(listelm, elm, field) do { \
(elm)->field.le_prev = (listelm)->field.le_prev; \
LIST_NEXT((elm), field) = (listelm); \
*(listelm)->field.le_prev = (elm); \
(listelm)->field.le_prev = &LIST_NEXT((elm), field); \
} while (0)
#define LIST_INSERT_HEAD(head, elm, field) do { \
if ((LIST_NEXT((elm), field) = LIST_FIRST((head))) != NULL) \
LIST_FIRST((head))->field.le_prev = &LIST_NEXT((elm), field);\
LIST_FIRST((head)) = (elm); \
(elm)->field.le_prev = &LIST_FIRST((head)); \
} while (0)
#define LIST_NEXT(elm, field) ((elm)->field.le_next)
#define LIST_REMOVE(elm, field) do { \
if (LIST_NEXT((elm), field) != NULL) \
LIST_NEXT((elm), field)->field.le_prev = \
(elm)->field.le_prev; \
*(elm)->field.le_prev = LIST_NEXT((elm), field); \
} while (0)
/*
* Tail queue declarations.
*/
#define TAILQ_HEAD(name, type) \
struct name { \
struct type *tqh_first; /* first element */ \
struct type **tqh_last; /* addr of last next element */ \
TRACEBUF \
}
#define TAILQ_HEAD_INITIALIZER(head) \
{ NULL, &(head).tqh_first }
#define TAILQ_ENTRY(type) \
struct { \
struct type *tqe_next; /* next element */ \
struct type **tqe_prev; /* address of previous next element */ \
TRACEBUF \
}
/*
* Tail queue functions.
*/
#define TAILQ_CONCAT(head1, head2, field) do { \
if (!TAILQ_EMPTY(head2)) { \
*(head1)->tqh_last = (head2)->tqh_first; \
(head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
(head1)->tqh_last = (head2)->tqh_last; \
TAILQ_INIT((head2)); \
QMD_TRACE_HEAD(head); \
QMD_TRACE_HEAD(head2); \
} \
} while (0)
#define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
#define TAILQ_FIRST(head) ((head)->tqh_first)
#define TAILQ_FOREACH(var, head, field) \
for ((var) = TAILQ_FIRST((head)); \
(var); \
(var) = TAILQ_NEXT((var), field))
#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
for ((var) = TAILQ_FIRST((head)); \
(var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
(var) = (tvar))
#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
for ((var) = TAILQ_LAST((head), headname); \
(var); \
(var) = TAILQ_PREV((var), headname, field))
#define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
for ((var) = TAILQ_LAST((head), headname); \
(var) && ((tvar) = TAILQ_PREV((var), headname, field), 1); \
(var) = (tvar))
#define TAILQ_INIT(head) do { \
TAILQ_FIRST((head)) = NULL; \
(head)->tqh_last = &TAILQ_FIRST((head)); \
QMD_TRACE_HEAD(head); \
} while (0)
#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
if ((TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field)) != NULL)\
TAILQ_NEXT((elm), field)->field.tqe_prev = \
&TAILQ_NEXT((elm), field); \
else { \
(head)->tqh_last = &TAILQ_NEXT((elm), field); \
QMD_TRACE_HEAD(head); \
} \
TAILQ_NEXT((listelm), field) = (elm); \
(elm)->field.tqe_prev = &TAILQ_NEXT((listelm), field); \
QMD_TRACE_ELEM(&(elm)->field); \
QMD_TRACE_ELEM(&listelm->field); \
} while (0)
#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
(elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
TAILQ_NEXT((elm), field) = (listelm); \
*(listelm)->field.tqe_prev = (elm); \
(listelm)->field.tqe_prev = &TAILQ_NEXT((elm), field); \
QMD_TRACE_ELEM(&(elm)->field); \
QMD_TRACE_ELEM(&listelm->field); \
} while (0)
#define TAILQ_INSERT_HEAD(head, elm, field) do { \
if ((TAILQ_NEXT((elm), field) = TAILQ_FIRST((head))) != NULL) \
TAILQ_FIRST((head))->field.tqe_prev = \
&TAILQ_NEXT((elm), field); \
else \
(head)->tqh_last = &TAILQ_NEXT((elm), field); \
TAILQ_FIRST((head)) = (elm); \
(elm)->field.tqe_prev = &TAILQ_FIRST((head)); \
QMD_TRACE_HEAD(head); \
QMD_TRACE_ELEM(&(elm)->field); \
} while (0)
#define TAILQ_INSERT_TAIL(head, elm, field) do { \
TAILQ_NEXT((elm), field) = NULL; \
(elm)->field.tqe_prev = (head)->tqh_last; \
*(head)->tqh_last = (elm); \
(head)->tqh_last = &TAILQ_NEXT((elm), field); \
QMD_TRACE_HEAD(head); \
QMD_TRACE_ELEM(&(elm)->field); \
} while (0)
#define TAILQ_LAST(head, headname) \
(*(((struct headname *)((head)->tqh_last))->tqh_last))
#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
#define TAILQ_PREV(elm, headname, field) \
(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
#define TAILQ_REMOVE(head, elm, field) do { \
if ((TAILQ_NEXT((elm), field)) != NULL) \
TAILQ_NEXT((elm), field)->field.tqe_prev = \
(elm)->field.tqe_prev; \
else { \
(head)->tqh_last = (elm)->field.tqe_prev; \
QMD_TRACE_HEAD(head); \
} \
*(elm)->field.tqe_prev = TAILQ_NEXT((elm), field); \
TRASHIT((elm)->field.tqe_next); \
TRASHIT((elm)->field.tqe_prev); \
QMD_TRACE_ELEM(&(elm)->field); \
} while (0)
#ifdef _KERNEL
/*
* XXX insque() and remque() are an old way of handling certain queues.
* They bogusly assumes that all queue heads look alike.
*/
struct quehead {
struct quehead *qh_link;
struct quehead *qh_rlink;
};
#ifdef __GNUC__
static __inline void
insque(void *a, void *b)
{
struct quehead *element = (struct quehead *)a,
*head = (struct quehead *)b;
element->qh_link = head->qh_link;
element->qh_rlink = head;
head->qh_link = element;
element->qh_link->qh_rlink = element;
}
static __inline void
remque(void *a)
{
struct quehead *element = (struct quehead *)a;
element->qh_link->qh_rlink = element->qh_rlink;
element->qh_rlink->qh_link = element->qh_link;
element->qh_rlink = 0;
}
#else /* !__GNUC__ */
void insque(void *a, void *b);
void remque(void *a);
#endif /* __GNUC__ */
#endif /* _KERNEL */
#endif /* !_SYS_QUEUE_H_ */

18
winsup/cygwin/include/sys/sem.h Normal file
View File

@@ -0,0 +1,18 @@
/* sys/sem.h
Copyright 2003 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. */
/* sys/sem.h header file for Cygwin. */
#ifndef _SYS_SEM_H
#define _SYS_SEM_H
#include <cygwin/sem.h>
#endif /* _SYS_SEM_H */

18
winsup/cygwin/include/sys/shm.h Normal file
View File

@@ -0,0 +1,18 @@
/* sys/shm.h
Copyright 2003 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. */
/* sys/shm.h header file for Cygwin. */
#ifndef _SYS_SHM_H
#define _SYS_SHM_H
#include <cygwin/shm.h>
#endif /* _SYS_SHM_H */

18
winsup/cygwin/include/sys/sysproto.h Normal file
View File

@@ -0,0 +1,18 @@
/* sys/sysproto.h
Copyright 2003 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. */
/* sys/sysproto.h header file for Cygwin. */
#ifndef _SYS_SYSPROTO_H
#define _SYS_SYSPROTO_H
#include <cygwin/sysproto.h>
#endif /* _SYS_SYSPROTO_H */

184
winsup/cygwin/msg.cc
View File

@@ -1,8 +1,6 @@
/* msg.cc: Single unix specification IPC interface for Cygwin.
/* msg.cc: XSI IPC interface for Cygwin.
Copyright 2002 Red Hat, Inc.
Written by Conrad Scott <conrad.scott@dsl.pipex.com>.
Copyright 2003 Red Hat, Inc.
This file is part of Cygwin.
@@ -11,37 +9,205 @@ Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <sys/types.h>
#include <cygwin/msg.h>
#include "cygerrno.h"
#ifdef USE_SERVER
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#include "sigproc.h"
#include "cygserver_ipc.h"
#include "cygserver_msg.h"
/*
* client_request_msg Constructors
*/
client_request_msg::client_request_msg (int msqid,
int cmd,
struct msqid_ds *buf)
: client_request (CYGSERVER_REQUEST_MSG, &_parameters, sizeof (_parameters))
{
_parameters.in.msgop = MSGOP_msgctl;
ipc_set_proc_info (_parameters.in.ipcblk);
_parameters.in.ctlargs.msqid = msqid;
_parameters.in.ctlargs.cmd = cmd;
_parameters.in.ctlargs.buf = buf;
msglen (sizeof (_parameters.in));
}
client_request_msg::client_request_msg (key_t key,
int msgflg)
: client_request (CYGSERVER_REQUEST_MSG, &_parameters, sizeof (_parameters))
{
_parameters.in.msgop = MSGOP_msgget;
ipc_set_proc_info (_parameters.in.ipcblk);
_parameters.in.getargs.key = key;
_parameters.in.getargs.msgflg = msgflg;
msglen (sizeof (_parameters.in));
}
client_request_msg::client_request_msg (int msqid,
void *msgp,
size_t msgsz,
long msgtyp,
int msgflg)
: client_request (CYGSERVER_REQUEST_MSG, &_parameters, sizeof (_parameters))
{
_parameters.in.msgop = MSGOP_msgrcv;
ipc_set_proc_info (_parameters.in.ipcblk);
_parameters.in.rcvargs.msqid = msqid;
_parameters.in.rcvargs.msgp = msgp;
_parameters.in.rcvargs.msgsz = msgsz;
_parameters.in.rcvargs.msgtyp = msgtyp;
_parameters.in.rcvargs.msgflg = msgflg;
msglen (sizeof (_parameters.in));
}
client_request_msg::client_request_msg (int msqid,
const void *msgp,
size_t msgsz,
int msgflg)
: client_request (CYGSERVER_REQUEST_MSG, &_parameters, sizeof (_parameters))
{
_parameters.in.msgop = MSGOP_msgsnd;
ipc_set_proc_info (_parameters.in.ipcblk);
_parameters.in.sndargs.msqid = msqid;
_parameters.in.sndargs.msgp = msgp;
_parameters.in.sndargs.msgsz = msgsz;
_parameters.in.sndargs.msgflg = msgflg;
msglen (sizeof (_parameters.in));
}
#endif /* USE_SERVER */
/*
* XSI message queue API. These are exported by the DLL.
*/
extern "C" int
msgctl (int msqid, int cmd, struct msqid_ds *buf)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
syscall_printf ("msgctl (msqid = %d, cmd = 0x%x, buf = %p)",
msqid, cmd, buf);
switch (cmd)
{
case IPC_STAT:
if (__check_null_invalid_struct_errno (buf, sizeof *buf))
return -1;
break;
case IPC_SET:
if (__check_invalid_read_ptr_errno (buf, sizeof *buf))
return -1;
break;
case IPC_RMID:
break;
case IPC_INFO:
/* msqid == 0: Request for msginfo struct. */
if (!msqid
&& __check_null_invalid_struct_errno (buf, sizeof (struct msginfo)))
return -1;
/* Otherwise, request msqid entries from internal msqid_ds array. */
if (msqid)
if (__check_null_invalid_struct_errno (buf, msqid * sizeof (struct msqid_ds)))
return -1;
break;
case MSG_INFO:
if (__check_null_invalid_struct_errno (buf, sizeof (struct msg_info)))
return -1;
break;
default:
syscall_printf ("-1 [%d] = msgctl ()", EINVAL);
set_errno (EINVAL);
return -1;
}
client_request_msg request (msqid, cmd, buf);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = msgctl ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
return request.retval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}
extern "C" int
msgget (key_t key, int msgflg)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
syscall_printf ("msgget (key = %U, msgflg = 0x%x)", key, msgflg);
client_request_msg request (key, msgflg);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = msgget ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
return request.retval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}
extern "C" ssize_t
msgrcv (int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
syscall_printf ("msgrcv (msqid = %d, msgp = %p, msgsz = %d, "
"msgtyp = %d, msgflg = 0x%x)",
msqid, msgp, msgsz, msgtyp, msgflg);
if (__check_null_invalid_struct_errno (msgp, msgsz))
return -1;
client_request_msg request (msqid, msgp, msgsz, msgtyp, msgflg);
if (request.make_request () == -1 || request.rcvval () == -1)
{
syscall_printf ("-1 [%d] = msgrcv ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
return request.rcvval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}
extern "C" int
msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
syscall_printf ("msgsnd (msqid = %d, msgp = %p, msgsz = %d, msgflg = 0x%x)",
msqid, msgp, msgsz, msgflg);
if (__check_invalid_read_ptr_errno (msgp, msgsz))
return -1;
client_request_msg request (msqid, msgp, msgsz, msgflg);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = msgsnd ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
return request.retval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}

53
winsup/cygwin/safe_memory.h
View File

@@ -1,53 +0,0 @@
/* safe_memory.h
Copyright 2002 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 __SAFE_MEMORY_H__
#define __SAFE_MEMORY_H__
/*****************************************************************************/
/* Temporary hack to get around the thread-unsafe new/delete in cygwin
* gcc 2.95.3. This should all be binned at the first opportunity,
* e.g. gcc 3.1 or sooner.
*
* The trick here is to do contruction via malloc(3) and then the
* placement new operator, and destruction via an explicit call to the
* destructor and then free(3).
*/
#include <stdlib.h>
inline void *operator new (size_t, void *__p) throw () { return __p; }
#define safe_new0(T) (new (malloc (sizeof (T))) T)
#ifdef NEW_MACRO_VARARGS
#define safe_new(T, ...) \
(new (malloc (sizeof (T))) T (__VA_ARGS__))
#else /* !NEW_MACRO_VARARGS */
#define safe_new(T, args...) \
(new (malloc (sizeof (T))) T (## args))
#endif /* !NEW_MACRO_VARARGS */
template <typename T> void
safe_delete (T *const object)
{
if (object)
{
object->~T ();
free (object);
}
}
#endif /* __SAFE_MEMORY_H__ */

147
winsup/cygwin/sem.cc
View File

@@ -1,8 +1,6 @@
/* sem.cc: Single unix specification IPC interface for Cygwin.
/* sem.cc: XSI IPC interface for Cygwin.
Copyright 2002 Red Hat, Inc.
Written by Conrad Scott <conrad.scott@dsl.pipex.com>.
Copyright 2003 Red Hat, Inc.
This file is part of Cygwin.
@@ -11,30 +9,161 @@ Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <sys/types.h>
#include <cygwin/sem.h>
#include "cygerrno.h"
#ifdef USE_SERVER
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#include <stdarg.h>
#include "sigproc.h"
#include "cygserver_ipc.h"
#include "cygserver_sem.h"
/*
* client_request_sem Constructors
*/
client_request_sem::client_request_sem (int semid,
int semnum,
int cmd,
union semun *arg)
: client_request (CYGSERVER_REQUEST_SEM, &_parameters, sizeof (_parameters))
{
_parameters.in.semop = SEMOP_semctl;
ipc_set_proc_info (_parameters.in.ipcblk);
_parameters.in.ctlargs.semid = semid;
_parameters.in.ctlargs.semnum = semnum;
_parameters.in.ctlargs.cmd = cmd;
_parameters.in.ctlargs.arg = arg;
msglen (sizeof (_parameters.in));
}
client_request_sem::client_request_sem (key_t key,
int nsems,
int semflg)
: client_request (CYGSERVER_REQUEST_SEM, &_parameters, sizeof (_parameters))
{
_parameters.in.semop = SEMOP_semget;
ipc_set_proc_info (_parameters.in.ipcblk);
_parameters.in.getargs.key = key;
_parameters.in.getargs.nsems = nsems;
_parameters.in.getargs.semflg = semflg;
msglen (sizeof (_parameters.in));
}
client_request_sem::client_request_sem (int semid,
struct sembuf *sops,
size_t nsops)
: client_request (CYGSERVER_REQUEST_SEM, &_parameters, sizeof (_parameters))
{
_parameters.in.semop = SEMOP_semop;
ipc_set_proc_info (_parameters.in.ipcblk);
_parameters.in.opargs.semid = semid;
_parameters.in.opargs.sops = sops;
_parameters.in.opargs.nsops = nsops;
msglen (sizeof (_parameters.in));
}
#endif /* USE_SERVER */
/*
* XSI semaphore API. These are exported by the DLL.
*/
extern "C" int
semctl (int semid, int semnum, int cmd, ...)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
union semun arg = {0};
if (cmd == IPC_STAT || cmd == IPC_SET || cmd == IPC_INFO || cmd == SEM_INFO
|| cmd == GETALL || cmd == SETALL || cmd == SETVAL)
{
va_list ap;
va_start (ap, cmd);
arg = va_arg (ap, union semun);
va_end (ap);
}
syscall_printf ("semctl (semid = %d, semnum = %d, cmd = %d, arg.val = 0x%x)",
semid, semnum, cmd, arg.val);
if ((cmd == IPC_STAT || cmd == IPC_SET)
&& __check_null_invalid_struct_errno (arg.buf, sizeof (struct semid_ds)))
return -1;
if (cmd == IPC_INFO)
{
/* semid == 0: Request for seminfo struct. */
if (!semid
&& __check_null_invalid_struct_errno (arg.buf, sizeof (struct seminfo)))
return -1;
/* Otherwise, request semid entries from internal semid_ds array. */
if (semid)
if (__check_null_invalid_struct_errno (arg.buf, semid * sizeof (struct semid_ds)))
return -1;
}
if (cmd == SEM_INFO
&& __check_null_invalid_struct_errno (arg.buf, sizeof (struct sem_info)))
return -1;
client_request_sem request (semid, semnum, cmd, &arg);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = semctl ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
return request.retval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}
extern "C" int
semget (key_t key, int nsems, int semflg)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
syscall_printf ("semget (key = %U, nsems = %d, semflg = 0x%x)",
key, nsems, semflg);
client_request_sem request (key, nsems, semflg);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = semctl ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
return request.retval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}
extern "C" int
semop (int semid, struct sembuf *sops, size_t nsops)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
syscall_printf ("semop (semid = %d, sops = %p, nsops = %d)",
semid, sops, nsops);
if (__check_null_invalid_struct_errno (sops, nsops * sizeof (struct sembuf)))
return -1;
client_request_sem request (semid, sops, nsops);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = semctl ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
return request.retval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}

907
winsup/cygwin/shm.cc
View File

@@ -1,9 +1,6 @@
/* shm.cc: Single unix specification IPC interface for Cygwin.
/* shm.cc: XSI IPC interface for Cygwin.
Copyright 2002,2003 Red Hat, Inc.
Written by Conrad Scott <conrad.scott@dsl.pipex.com>.
Based on code by Robert Collins <robert.collins@hotmail.com>.
Copyright 2003 Red Hat, Inc.
This file is part of Cygwin.
@@ -15,697 +12,349 @@ details. */
#include "cygerrno.h"
#ifdef USE_SERVER
#include <sys/types.h>
#include <assert.h>
#include <sys/queue.h>
#include <stdio.h>
#include <unistd.h>
#include "safe_memory.h"
#include "pinfo.h"
#include "sigproc.h"
#include "cygserver_ipc.h"
#include "cygserver_shm.h"
/*---------------------------------------------------------------------------*
* class client_shmmgr
*
* A singleton class.
*---------------------------------------------------------------------------*/
/*
* client_request_shm Constructors
*/
#define shmmgr (client_shmmgr::instance ())
class client_shmmgr
client_request_shm::client_request_shm (int shmid,
const void *shmaddr,
int shmflg)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
private:
class segment_t
{
public:
const int shmid;
const void *const shmaddr;
const int shmflg;
HANDLE hFileMap; // Updated by fixup_shms_after_fork ().
_parameters.in.shmop = SHMOP_shmat;
ipc_set_proc_info (_parameters.in.ipcblk);
segment_t *next;
_parameters.in.atargs.shmid = shmid;
_parameters.in.atargs.shmaddr = shmaddr;
_parameters.in.atargs.shmflg = shmflg;
segment_t (const int shmid, const void *const shmaddr, const int shmflg,
const HANDLE hFileMap)
: shmid (shmid), shmaddr (shmaddr), shmflg (shmflg), hFileMap (hFileMap),
next (NULL)
{}
};
msglen (sizeof (_parameters.in));
}
public:
static client_shmmgr & instance ();
client_request_shm::client_request_shm (int shmid,
int cmd,
struct shmid_ds *buf)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
_parameters.in.shmop = SHMOP_shmctl;
ipc_set_proc_info (_parameters.in.ipcblk);
void *shmat (int shmid, const void *, int shmflg);
int shmctl (int shmid, int cmd, struct shmid_ds *);
int shmdt (const void *);
int shmget (key_t, size_t, int shmflg);
_parameters.in.ctlargs.shmid = shmid;
_parameters.in.ctlargs.cmd = cmd;
_parameters.in.ctlargs.buf = buf;
int fixup_shms_after_fork ();
msglen (sizeof (_parameters.in));
}
private:
static NO_COPY client_shmmgr *_instance;
client_request_shm::client_request_shm (const void *shmaddr)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
_parameters.in.shmop = SHMOP_shmdt;
ipc_set_proc_info (_parameters.in.ipcblk);
CRITICAL_SECTION _segments_lock;
static segment_t *_segments_head; // List of attached segs by shmaddr.
_parameters.in.dtargs.shmaddr = shmaddr;
static long _shmat_cnt; // No. of attached segs; for info. only.
msglen (sizeof (_parameters.in));
}
client_shmmgr ();
~client_shmmgr ();
client_request_shm::client_request_shm (key_t key,
size_t size,
int shmflg)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
_parameters.in.shmop = SHMOP_shmget;
ipc_set_proc_info (_parameters.in.ipcblk);
// Undefined (as this class is a singleton):
client_shmmgr (const client_shmmgr &);
client_shmmgr & operator= (const client_shmmgr &);
_parameters.in.getargs.key = key;
_parameters.in.getargs.size = size;
_parameters.in.getargs.shmflg = shmflg;
segment_t *find (const void *, segment_t **previous = NULL);
msglen (sizeof (_parameters.in));
}
void *attach (int shmid, const void *, int shmflg, HANDLE & hFileMap);
client_request_shm::client_request_shm (proc *p1)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
_parameters.in.shmop = SHMOP_shmfork;
ipc_set_proc_info (_parameters.in.ipcblk);
segment_t *new_segment (int shmid, const void *, int shmflg, HANDLE);
_parameters.in.forkargs = *p1;
}
/* List of shmid's with file mapping HANDLE and size, returned by shmget. */
struct shm_shmid_list {
SLIST_ENTRY(shm_shmid_list) ssh_next;
int shmid;
vm_object_t hdl;
size_t size;
};
/* static */ NO_COPY client_shmmgr *client_shmmgr::_instance;
/* The following two variables must be inherited by child processes
* since they are used by fixup_shms_after_fork () to re-attach to the
* parent's shm segments.
*/
/* static */ client_shmmgr::segment_t *client_shmmgr::_segments_head;
/* static */ long client_shmmgr::_shmat_cnt;
/*---------------------------------------------------------------------------*
* client_shmmgr::instance ()
*---------------------------------------------------------------------------*/
client_shmmgr &
client_shmmgr::instance ()
{
if (!_instance)
_instance = safe_new0 (client_shmmgr);
assert (_instance);
return *_instance;
}
/*---------------------------------------------------------------------------*
* client_shmmgr::shmat ()
*---------------------------------------------------------------------------*/
void *
client_shmmgr::shmat (const int shmid,
const void *const shmaddr,
const int shmflg)
{
syscall_printf ("shmat (shmid = %d, shmaddr = %p, shmflg = 0%o)",
shmid, shmaddr, shmflg);
EnterCriticalSection (&_segments_lock);
HANDLE hFileMap = NULL;
void *const ptr = attach (shmid, shmaddr, shmflg, hFileMap);
if (ptr)
new_segment (shmid, ptr, shmflg, hFileMap);
LeaveCriticalSection (&_segments_lock);
if (ptr)
syscall_printf ("%p = shmat (shmid = %d, shmaddr = %p, shmflg = 0%o)",
ptr, shmid, shmaddr, shmflg);
// else
// See the syscall_printf in client_shmmgr::attach ().
return (ptr ? ptr : (void *) -1);
}
/*---------------------------------------------------------------------------*
* client_shmmgr::shmctl ()
*---------------------------------------------------------------------------*/
int
client_shmmgr::shmctl (const int shmid,
const int cmd,
struct shmid_ds *const buf)
{
syscall_printf ("shmctl (shmid = %d, cmd = 0x%x, buf = %p)",
shmid, cmd, buf);
// Check parameters and set up in parameters as required.
const struct shmid_ds *in_buf = NULL;
switch (cmd)
{
case IPC_SET:
if (__check_invalid_read_ptr_errno (buf, sizeof (struct shmid_ds)))
{
syscall_printf (("-1 [EFAULT] = "
"shmctl (shmid = %d, cmd = 0x%x, buf = %p)"),
shmid, cmd, buf);
set_errno (EFAULT);
return -1;
}
in_buf = buf;
break;
case IPC_STAT:
case SHM_STAT:
if (__check_null_invalid_struct_errno (buf, sizeof (struct shmid_ds)))
{
syscall_printf (("-1 [EFAULT] = "
"shmctl (shmid = %d, cmd = 0x%x, buf = %p)"),
shmid, cmd, buf);
set_errno (EFAULT);
return -1;
}
break;
case IPC_INFO:
if (__check_null_invalid_struct_errno (buf, sizeof (struct shminfo)))
{
syscall_printf (("-1 [EFAULT] = "
"shmctl (shmid = %d, cmd = 0x%x, buf = %p)"),
shmid, cmd, buf);
set_errno (EFAULT);
return -1;
}
break;
case SHM_INFO:
if (__check_null_invalid_struct_errno (buf, sizeof (struct shm_info)))
{
syscall_printf (("-1 [EFAULT] = "
"shmctl (shmid = %d, cmd = 0x%x, buf = %p)"),
shmid, cmd, buf);
set_errno (EFAULT);
return -1;
}
break;
}
// Create and issue the command.
client_request_shm request (shmid, cmd, in_buf);
if (request.make_request () == -1 || request.error_code ())
{
syscall_printf (("-1 [%d] = "
"shmctl (shmid = %d, cmd = 0x%x, buf = %p)"),
request.error_code (), shmid, cmd, buf);
set_errno (request.error_code ());
return -1;
}
// Some commands require special processing for their out parameters.
int result = 0;
switch (cmd)
{
case IPC_STAT:
*buf = request.ds ();
break;
case IPC_INFO:
*(struct shminfo *) buf = request.shminfo ();
break;
case SHM_STAT: // ipcs(8) i'face.
result = request.shmid ();
*buf = request.ds ();
break;
case SHM_INFO: // ipcs(8) i'face.
result = request.shmid ();
*(struct shm_info *) buf = request.shm_info ();
break;
}
syscall_printf ("%d = shmctl (shmid = %d, cmd = 0x%x, buf = %p)",
result, shmid, cmd, buf);
return result;
}
/*---------------------------------------------------------------------------*
* client_shmmgr::shmdt ()
*
* According to Posix, the only error condition for this system call
* is EINVAL if shmaddr is not the address of the start of an attached
* shared memory segment. Given that, all other errors just generate
* tracing noise.
*---------------------------------------------------------------------------*/
int
client_shmmgr::shmdt (const void *const shmaddr)
{
syscall_printf ("shmdt (shmaddr = %p)", shmaddr);
EnterCriticalSection (&_segments_lock);
segment_t *previous = NULL;
segment_t *const segptr = find (shmaddr, &previous);
if (!segptr)
{
LeaveCriticalSection (&_segments_lock);
syscall_printf ("-1 [EINVAL] = shmdt (shmaddr = %p)", shmaddr);
set_errno (EINVAL);
return -1;
}
assert (previous ? previous->next == segptr : _segments_head == segptr);
if (previous)
previous->next = segptr->next;
else
_segments_head = segptr->next;
LeaveCriticalSection (&_segments_lock);
const long cnt = InterlockedDecrement (&_shmat_cnt);
assert (cnt >= 0);
if (!UnmapViewOfFile ((void *) shmaddr))
syscall_printf (("failed to unmap view "
"[shmid = %d, handle = %p, shmaddr = %p]:"
"%E"),
segptr->shmid, segptr->hFileMap, shmaddr);
assert (segptr->hFileMap);
if (!CloseHandle (segptr->hFileMap))
syscall_printf (("failed to close file map handle "
"[shmid = %d, handle = %p]: %E"),
segptr->shmid, segptr->hFileMap);
client_request_shm request (segptr->shmid);
if (request.make_request () == -1 || request.error_code ())
syscall_printf ("shmdt request failed [shmid = %d, handle = %p]: %s",
segptr->shmid, segptr->hFileMap,
strerror (request.error_code ()));
safe_delete (segptr);
syscall_printf ("0 = shmdt (shmaddr = %p)", shmaddr);
return 0;
}
/*---------------------------------------------------------------------------*
* client_shmmgr::shmget ()
*---------------------------------------------------------------------------*/
int
client_shmmgr::shmget (const key_t key, const size_t size, const int shmflg)
{
syscall_printf ("shmget (key = 0x%016X, size = %u, shmflg = 0%o)",
key, size, shmflg);
client_request_shm request (key, size, shmflg);
if (request.make_request () == -1 || request.error_code ())
{
syscall_printf (("-1 [%d] = "
"shmget (key = 0x%016X, size = %u, shmflg = 0%o)"),
request.error_code (),
key, size, shmflg);
set_errno (request.error_code ());
return -1;
}
syscall_printf (("%d = shmget (key = 0x%016X, size = %u, shmflg = 0%o)"),
request.shmid (),
key, size, shmflg);
return request.shmid ();
}
/*---------------------------------------------------------------------------*
* client_shmmgr::fixup_shms_after_fork ()
*
* The hFileMap handles are non-inheritable: so they have to be
* re-acquired from cygserver.
*
* Nb. This routine need not be thread-safe as it is only called at startup.
*---------------------------------------------------------------------------*/
int
client_shmmgr::fixup_shms_after_fork ()
{
debug_printf ("re-attaching to shm segments: %d attached", _shmat_cnt);
{
int length = 0;
for (segment_t *segptr = _segments_head; segptr; segptr = segptr->next)
length += 1;
if (_shmat_cnt != length)
{
system_printf (("state inconsistent: "
"_shmat_cnt = %d, length of segments list = %d"),
_shmat_cnt, length);
return 1;
}
}
for (segment_t *segptr = _segments_head; segptr; segptr = segptr->next)
if (!attach (segptr->shmid,
segptr->shmaddr,
segptr->shmflg & ~SHM_RND,
segptr->hFileMap))
{
system_printf ("fatal error re-attaching to shm segment %d",
segptr->shmid);
return 1;
}
if (_shmat_cnt)
debug_printf ("re-attached all %d shm segments", _shmat_cnt);
return 0;
}
/*---------------------------------------------------------------------------*
* client_shmmgr::client_shmmgr ()
*---------------------------------------------------------------------------*/
client_shmmgr::client_shmmgr ()
{
InitializeCriticalSection (&_segments_lock);
}
/*---------------------------------------------------------------------------*
* client_shmmgr::~client_shmmgr ()
*---------------------------------------------------------------------------*/
client_shmmgr::~client_shmmgr ()
{
DeleteCriticalSection (&_segments_lock);
}
/*---------------------------------------------------------------------------*
* client_shmmgr::find ()
*---------------------------------------------------------------------------*/
client_shmmgr::segment_t *
client_shmmgr::find (const void *const shmaddr, segment_t **previous)
{
if (previous)
*previous = NULL;
for (segment_t *segptr = _segments_head; segptr; segptr = segptr->next)
if (segptr->shmaddr == shmaddr)
return segptr;
else if (segptr->shmaddr > shmaddr) // The list is sorted by shmaddr.
return NULL;
else if (previous)
*previous = segptr;
return NULL;
}
/*---------------------------------------------------------------------------*
* client_shmmgr::attach ()
*
* The body of shmat (), also used by fixup_shms_after_fork ().
*---------------------------------------------------------------------------*/
void *
client_shmmgr::attach (const int shmid,
const void *shmaddr,
const int shmflg,
HANDLE & hFileMap)
{
client_request_shm request (shmid, shmflg);
if (request.make_request () == -1 || request.error_code ())
{
syscall_printf (("-1 [%d] = "
"shmat (shmid = %d, shmaddr = %p, shmflg = 0%o)"),
request.error_code (), shmid, shmaddr, shmflg);
set_errno (request.error_code ());
return NULL;
}
int result = 0;
const DWORD access = (shmflg & SHM_RDONLY) ? FILE_MAP_READ : FILE_MAP_WRITE;
if (shmaddr && (shmflg & SHM_RND))
shmaddr = (char *) shmaddr - ((ssize_t) shmaddr % SHMLBA);
void *const ptr =
MapViewOfFileEx (request.hFileMap (), access, 0, 0, 0, (void *) shmaddr);
if (!ptr)
{
syscall_printf (("failed to map view "
"[shmid = %d, handle = %p, shmaddr = %p]: %E"),
shmid, request.hFileMap (), shmaddr);
result = EINVAL; // FIXME
}
else if (shmaddr && ptr != shmaddr)
{
syscall_printf (("failed to map view at requested address "
"[shmid = %d, handle = %p]: "
"requested address = %p, mapped address = %p"),
shmid, request.hFileMap (),
shmaddr, ptr);
result = EINVAL; // FIXME
}
if (result != 0)
{
if (!CloseHandle (request.hFileMap ()))
syscall_printf (("failed to close file map handle "
"[shmid = %d, handle = %p]: %E"),
shmid, request.hFileMap ());
client_request_shm dt_req (shmid);
if (dt_req.make_request () == -1 || dt_req.error_code ())
syscall_printf ("shmdt request failed [shmid = %d, handle = %p]: %s",
shmid, request.hFileMap (),
strerror (dt_req.error_code ()));
set_errno (result);
return NULL;
}
hFileMap = request.hFileMap ();
return ptr;
}
/*---------------------------------------------------------------------------*
* client_shmmgr::new_segment ()
*
* Allocate a new segment for the given shmid, file map and address
* and insert into the segment map.
*---------------------------------------------------------------------------*/
client_shmmgr::segment_t *
client_shmmgr::new_segment (const int shmid,
const void *const shmaddr,
const int shmflg,
const HANDLE hFileMap)
{
assert (ipc_ext2int_subsys (shmid) == IPC_SHMOP);
assert (hFileMap);
assert (shmaddr);
segment_t *previous = NULL; // Insert pointer.
const segment_t *const tmp = find (shmaddr, &previous);
assert (!tmp);
assert (previous \
? (!previous->next || previous->next->shmaddr > shmaddr) \
: (!_segments_head || _segments_head->shmaddr > shmaddr));
segment_t *const segptr =
safe_new (segment_t, shmid, shmaddr, shmflg, hFileMap);
assert (segptr);
if (previous)
{
segptr->next = previous->next;
previous->next = segptr;
}
else
{
segptr->next = _segments_head;
_segments_head = segptr;
}
const long cnt = InterlockedIncrement (&_shmat_cnt);
assert (cnt > 0);
return segptr;
}
/*---------------------------------------------------------------------------*
* fixup_shms_after_fork ()
*---------------------------------------------------------------------------*/
static SLIST_HEAD(, shm_shmid_list) ssh_list;
/* List of attached mappings, as returned by shmat. */
struct shm_attached_list {
SLIST_ENTRY(shm_attached_list) sph_next;
vm_object_t ptr;
vm_object_t hdl;
size_t size;
int access;
};
static SLIST_HEAD(, shm_attached_list) sph_list;
int __stdcall
fixup_shms_after_fork ()
{
return shmmgr.fixup_shms_after_fork ();
}
if (!SLIST_FIRST (&sph_list))
return 0;
pinfo p (myself->ppid);
proc parent = { myself->ppid, p->dwProcessId, p->uid, p->gid };
/*---------------------------------------------------------------------------*
* client_request_shm::client_request_shm ()
*---------------------------------------------------------------------------*/
client_request_shm::client_request_shm (const int shmid, const int shmflg)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
_parameters.in.shmop = SHMOP_shmat;
_parameters.in.shmid = shmid;
_parameters.in.shmflg = shmflg;
_parameters.in.cygpid = getpid ();
_parameters.in.winpid = GetCurrentProcessId ();
_parameters.in.uid = geteuid32 ();
_parameters.in.gid = getegid32 ();
msglen (sizeof (_parameters.in));
}
/*---------------------------------------------------------------------------*
* client_request_shm::client_request_shm ()
*---------------------------------------------------------------------------*/
client_request_shm::client_request_shm (const int shmid,
const int cmd,
const struct shmid_ds *const buf)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
_parameters.in.shmop = SHMOP_shmctl;
_parameters.in.shmid = shmid;
_parameters.in.cmd = cmd;
if (buf)
_parameters.in.ds = *buf;
_parameters.in.cygpid = getpid ();
_parameters.in.winpid = GetCurrentProcessId ();
_parameters.in.uid = geteuid32 ();
_parameters.in.gid = getegid32 ();
msglen (sizeof (_parameters.in));
}
/*---------------------------------------------------------------------------*
* client_request_shm::client_request_shm ()
*---------------------------------------------------------------------------*/
client_request_shm::client_request_shm (const int shmid)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
_parameters.in.shmop = SHMOP_shmdt;
_parameters.in.shmid = shmid;
_parameters.in.cygpid = getpid ();
_parameters.in.winpid = GetCurrentProcessId ();
_parameters.in.uid = geteuid32 ();
_parameters.in.gid = getegid32 ();
msglen (sizeof (_parameters.in));
}
/*---------------------------------------------------------------------------*
* client_request_shm::client_request_shm ()
*---------------------------------------------------------------------------*/
client_request_shm::client_request_shm (const key_t key,
const size_t size,
const int shmflg)
: client_request (CYGSERVER_REQUEST_SHM, &_parameters, sizeof (_parameters))
{
_parameters.in.shmop = SHMOP_shmget;
_parameters.in.key = key;
_parameters.in.size = size;
_parameters.in.shmflg = shmflg;
_parameters.in.cygpid = getpid ();
_parameters.in.winpid = GetCurrentProcessId ();
_parameters.in.uid = geteuid32 ();
_parameters.in.gid = getegid32 ();
msglen (sizeof (_parameters.in));
client_request_shm request (&parent);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = shmctl ()", request.error_code ());
set_errno (request.error_code ());
return 0;
}
shm_attached_list *sph_entry;
/* Remove map from list... */
SLIST_FOREACH (sph_entry, &sph_list, sph_next)
{
vm_object_t ptr = MapViewOfFileEx(sph_entry->hdl, sph_entry->access,
0, 0, sph_entry->size, sph_entry->ptr);
if (ptr != sph_entry->ptr)
api_fatal ("MapViewOfFileEx (%p), %E. Terminating.", sph_entry->ptr);
}
return 0;
}
#endif /* USE_SERVER */
/*---------------------------------------------------------------------------*
* shmat ()
*---------------------------------------------------------------------------*/
/*
* XSI shmaphore API. These are exported by the DLL.
*/
extern "C" void *
shmat (const int shmid, const void *const shmaddr, const int shmflg)
shmat (int shmid, const void *shmaddr, int shmflg)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
return shmmgr.shmat (shmid, shmaddr, shmflg);
syscall_printf ("shmat (shmid = %d, shmaddr = %p, shmflg = 0x%x)",
shmid, shmaddr, shmflg);
shm_shmid_list *ssh_entry;
SLIST_FOREACH (ssh_entry, &ssh_list, ssh_next)
{
if (ssh_entry->shmid == shmid)
break;
}
if (!ssh_entry)
{
/* Invalid shmid */
set_errno (EINVAL);
return NULL;
}
vm_object_t attach_va = NULL;
if (shmaddr)
{
if (shmflg & SHM_RND)
attach_va = (vm_object_t)((vm_offset_t)shmaddr & ~(SHMLBA-1));
else
attach_va = (vm_object_t)shmaddr;
/* Don't even bother to call anything if shmaddr is NULL or
not aligned. */
if (!attach_va || (vm_offset_t)attach_va % SHMLBA)
{
set_errno (EINVAL);
return NULL;
}
}
/* Try allocating memory before calling cygserver. */
shm_attached_list *sph_entry = new (shm_attached_list);
if (!sph_entry)
{
set_errno (ENOMEM);
return NULL;
}
DWORD access = (shmflg & SHM_RDONLY) ? FILE_MAP_READ : FILE_MAP_WRITE;
vm_object_t ptr = MapViewOfFileEx(ssh_entry->hdl, access, 0, 0,
ssh_entry->size, attach_va);
if (!ptr)
{
__seterrno ();
delete sph_entry;
return NULL;
}
/* Use returned ptr address as is, so it's stored using the exact value
in cygserver. */
client_request_shm request (shmid, ptr, shmflg & ~SHM_RND);
if (request.make_request () == -1 || request.ptrval () == NULL)
{
syscall_printf ("-1 [%d] = shmctl ()", request.error_code ());
UnmapViewOfFile (ptr);
delete sph_entry;
set_errno (request.error_code ());
return NULL;
}
sph_entry->ptr = ptr;
sph_entry->hdl = ssh_entry->hdl;
sph_entry->size = ssh_entry->size;
sph_entry->access = access;
SLIST_INSERT_HEAD (&sph_list, sph_entry, sph_next);
return ptr;
#else
set_errno (ENOSYS);
return (void *) -1;
return NULL;
#endif
}
/*---------------------------------------------------------------------------*
* shmctl ()
*---------------------------------------------------------------------------*/
extern "C" int
shmctl (const int shmid, const int cmd, struct shmid_ds *const buf)
shmctl (int shmid, int cmd, struct shmid_ds *buf)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
return shmmgr.shmctl (shmid, cmd, buf);
syscall_printf ("shmctl (shmid = %d, cmd = %d, buf = 0x%x)",
shmid, cmd, buf);
switch (cmd)
{
case IPC_STAT:
case IPC_SET:
if (__check_null_invalid_struct_errno (buf, sizeof (struct shmid_ds)))
return -1;
break;
case IPC_INFO:
/* shmid == 0: Request for shminfo struct. */
if (!shmid
&& __check_null_invalid_struct_errno (buf, sizeof (struct shminfo)))
return -1;
/* Otherwise, request shmid entries from internal shmid_ds array. */
if (shmid)
if (__check_null_invalid_struct_errno (buf, shmid * sizeof (struct shmid_ds)))
return -1;
break;
case SHM_INFO:
if (__check_null_invalid_struct_errno (buf, sizeof (struct shm_info)))
return -1;
break;
}
client_request_shm request (shmid, cmd, buf);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = shmctl ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
if (cmd == IPC_RMID)
{
/* The process must cleanup its own storage... */
shm_shmid_list *ssh_entry, *ssh_next_entry;
SLIST_FOREACH_SAFE (ssh_entry, &ssh_list, ssh_next, ssh_next_entry)
{
if (ssh_entry->shmid == shmid)
{
SLIST_REMOVE (&ssh_list, ssh_entry, shm_shmid_list, ssh_next);
/* ...and close the handle. */
CloseHandle (ssh_entry->hdl);
delete ssh_entry;
break;
}
}
}
return request.retval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}
/*---------------------------------------------------------------------------*
* shmdt ()
*---------------------------------------------------------------------------*/
extern "C" int
shmdt (const void *const shmaddr)
shmdt (const void *shmaddr)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
return shmmgr.shmdt (shmaddr);
syscall_printf ("shmget (shmaddr = %p)", shmaddr);
client_request_shm request (shmaddr);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = shmctl ()", request.error_code ());
set_errno (request.error_code ());
return -1;
}
shm_attached_list *sph_entry, *sph_next_entry;
/* Remove map from list... */
SLIST_FOREACH_SAFE (sph_entry, &sph_list, sph_next, sph_next_entry)
{
if (sph_entry->ptr == shmaddr)
{
SLIST_REMOVE (&sph_list, sph_entry, shm_attached_list, sph_next);
/* ...and unmap view. */
UnmapViewOfFile (sph_entry->ptr);
delete sph_entry;
break;
}
}
return request.retval ();
#else
set_errno (ENOSYS);
return -1;
#endif
}
/*---------------------------------------------------------------------------*
* shmget ()
*---------------------------------------------------------------------------*/
extern "C" int
shmget (const key_t key, const size_t size, const int shmflg)
shmget (key_t key, size_t size, int shmflg)
{
#ifdef USE_SERVER
sigframe thisframe (mainthread);
return shmmgr.shmget (key, size, shmflg);
syscall_printf ("shmget (key = %U, size = %d, shmflg = 0x%x)",
key, size, shmflg);
/* Try allocating memory before calling cygserver. */
shm_shmid_list *ssh_new_entry = new (shm_shmid_list);
if (!ssh_new_entry)
{
set_errno (ENOMEM);
return -1;
}
client_request_shm request (key, size, shmflg);
if (request.make_request () == -1 || request.retval () == -1)
{
syscall_printf ("-1 [%d] = shmctl ()", request.error_code ());
delete ssh_new_entry;
set_errno (request.error_code ());
return -1;
}
int shmid = request.retval (); /* Shared mem ID */
vm_object_t hdl = request.objval (); /* HANDLE associated with it. */
shm_shmid_list *ssh_entry;
SLIST_FOREACH (ssh_entry, &ssh_list, ssh_next)
{
if (ssh_entry->shmid == shmid)
{
/* We already maintain an entry for this shmid. That means,
the hdl returned by cygserver is a superfluous duplicate
of the original hdl maintained by cygserver. We can safely
delete it. */
CloseHandle (hdl);
delete ssh_new_entry;
return shmid;
}
}
/* We arrive here only if shmid is a new one for this process. Add the
shmid and hdl value to the list. */
ssh_new_entry->shmid = shmid;
ssh_new_entry->hdl = hdl;
ssh_new_entry->size = size;
SLIST_INSERT_HEAD (&ssh_list, ssh_new_entry, ssh_next);
return shmid;
#else
set_errno (ENOSYS);
return -1;