a6df500f7d
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.
103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/* sys/msg.h
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Copyright 2002 Red Hat Inc.
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Written by Conrad Scott <conrad.scott@dsl.pipex.com>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _CYGWIN_MSG_H
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#define _CYGWIN_MSG_H
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#include <cygwin/ipc.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Message operation flags:
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*/
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#define MSG_NOERROR 0x01 /* No error if big message. */
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#ifdef _KERNEL
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/* Command definitions for the semctl () function:
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*/
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#define MSG_STAT 0x2000 /* For ipcs(8) */
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#define MSG_INFO 0x2001 /* For ipcs(8) */
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#endif /* _KERNEL */
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/* Used for the number of messages in the message queue.
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*/
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typedef unsigned long msgqnum_t;
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/* Used for the number of bytes allowed in a message queue.
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*/
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typedef unsigned long msglen_t;
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struct msqid_ds
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{
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struct ipc_perm msg_perm; /* Operation permission structure. */
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msglen_t msg_cbytes; /* Number of bytes currently on queue. */
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msgqnum_t msg_qnum; /* Number of messages currently on queue. */
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msglen_t msg_qbytes; /* Maximum number of bytes allowed on queue. */
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pid_t msg_lspid; /* Process ID of last msgsnd (). */
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pid_t msg_lrpid; /* Process ID of last msgrcv (). */
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timestruc_t msg_stim; /* Time of last msgsnd (). */
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timestruc_t msg_rtim; /* Time of last msgrcv (). */
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timestruc_t msg_ctim; /* Time of last change. */
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#ifdef _KERNEL
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struct msg *msg_first;
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struct msg *msg_last;
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#else
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long msg_spare4[2];
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#endif /* _KERNEL */
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};
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#define msg_stime msg_stim.tv_sec
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#define msg_rtime msg_rtim.tv_sec
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#define msg_ctime msg_ctim.tv_sec
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#ifdef _KERNEL
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/* Buffer type for msgctl (IPC_INFO, ...) as used by ipcs(8).
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*/
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struct msginfo
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{
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long msgmax; /* Maximum number of bytes per
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message. */
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long msgmnb; /* Maximum number of bytes on any one
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message queue. */
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long msgmni; /* Maximum number of message queues,
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system wide. */
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long msgtql; /* Maximum number of messages, system
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wide. */
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long msgssz; /* Size of a message segment, must be
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small power of 2 greater than 4. */
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long msgseg; /* Number of message segments */
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long msg_spare[2];
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};
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/* Buffer type for msgctl (MSG_INFO, ...) as used by ipcs(8).
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*/
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struct msg_info
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{
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long msg_ids; /* Number of allocated queues. */
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long msg_num; /* Number of messages, system wide. */
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long msg_tot; /* Size in bytes of messages, system wide. */
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};
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#endif /* _KERNEL */
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int msgctl (int msqid, int cmd, struct msqid_ds *buf);
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int msgget (key_t key, int msgflg);
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ssize_t msgrcv (int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg);
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int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _CYGWIN_MSG_H */
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