diff options
Diffstat (limited to 'winsup/cygwin/include')
| -rw-r--r-- | winsup/cygwin/include/sys/ipc.h | 47 | ||||
| -rw-r--r-- | winsup/cygwin/include/sys/msg.h | 92 | ||||
| -rw-r--r-- | winsup/cygwin/include/sys/sem.h | 95 | ||||
| -rw-r--r-- | winsup/cygwin/include/sys/shm.h | 74 |
4 files changed, 251 insertions, 57 deletions
diff --git a/winsup/cygwin/include/sys/ipc.h b/winsup/cygwin/include/sys/ipc.h index a809fd4ec..22e0e3c26 100644 --- a/winsup/cygwin/include/sys/ipc.h +++ b/winsup/cygwin/include/sys/ipc.h @@ -17,41 +17,34 @@ extern "C" { #endif -/* - * <sys/types.h> must be included before <sys/ipc.h>. We aren't meant - * to automatically include it however. - */ - -struct ipc_perm { - uid_t uid; - gid_t gid; - uid_t cuid; - gid_t cgid; - mode_t mode; +struct ipc_perm +{ + uid_t uid; /* Owner's user ID. */ + gid_t gid; /* Owner's group ID. */ + uid_t cuid; /* Creator's user ID. */ + gid_t cgid; /* Creator's group ID. */ + mode_t mode; /* Read/write permission. */ key_t key; -}; +}; -/* - * The mode flags used with the _get functions use the low order 9 - * bits for a mode request. +/* Mode bits: */ -#define IPC_CREAT 0x0200 -#define IPC_EXCL 0x0400 -#define IPC_NOWAIT 0x0800 +#define IPC_CREAT 0x0200 /* Create entry if key does not exist. */ +#define IPC_EXCL 0x0400 /* Fail if key exists. */ +#define IPC_NOWAIT 0x0800 /* Error if request must wait. */ -/* This is a value that will _never_ be a valid key from ftok(3). */ -#define IPC_PRIVATE ((key_t) -2) +/* Keys: + */ +#define IPC_PRIVATE ((key_t) 0) /* Private key. */ -/* - * Values for the cmd argument to shmctl(2). - * Commands 1000-1fff are reserved for IPC_xxx. +/* Control commands: */ -#define IPC_RMID 0x1000 -#define IPC_SET 0x1001 -#define IPC_STAT 0x1002 +#define IPC_RMID 0x1000 /* Remove identifier. */ +#define IPC_SET 0x1001 /* Set options. */ +#define IPC_STAT 0x1002 /* Get options. */ #define IPC_INFO 0x1003 /* For ipcs(8). */ -key_t ftok(const char *, int); +key_t ftok (const char *path, int id); #ifdef __cplusplus } diff --git a/winsup/cygwin/include/sys/msg.h b/winsup/cygwin/include/sys/msg.h new file mode 100644 index 000000000..2b00bb723 --- /dev/null +++ b/winsup/cygwin/include/sys/msg.h @@ -0,0 +1,92 @@ +/* sys/msg.h + + Copyright 2002 Red Hat Inc. + Written by Conrad Scott <conrad.scott@dsl.pipex.com> + +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 _SYS_MSG_H +#define _SYS_MSG_H + +#include <sys/ipc.h> + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* Message operation flags: + */ +#define MSG_NOERROR 0x01 /* No error if big message. */ + +/* Command definitions for the semctl () function: + */ +#define MSG_STAT 0x2000 /* For ipcs(8) */ +#define MSG_INFO 0x2001 /* For ipcs(8) */ + +/* Used for the number of messages in the message queue. + */ +typedef long int msgqnum_t; + +/* Used for the number of bytes allowed in a message queue. + */ +typedef long int msglen_t; + +struct msqid_ds +{ + struct ipc_perm msg_perm; /* Operation permission structure. */ + msglen_t msg_cbytes; /* Number of bytes currently on queue. */ + msgqnum_t msg_qnum; /* Number of messages currently on queue. */ + msglen_t msg_qbytes; /* Maximum number of bytes allowed on queue. */ + pid_t msg_lspid; /* Process ID of last msgsnd (). */ + pid_t msg_lrpid; /* Process ID of last msgrcv (). */ + timestruc_t msg_stim; /* Time of last msgsnd (). */ + timestruc_t msg_rtim; /* Time of last msgrcv (). */ + timestruc_t msg_ctim; /* Time of last change. */ + long msg_spare4[2]; +}; + +#define msg_stime msg_stim.tv_sec +#define msg_rtime msg_rtim.tv_sec +#define msg_ctime msg_ctim.tv_sec + +/* 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]; +}; + +/* 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. */ +}; + +int msgctl (int msqid, int cmd, struct msqid_ds *buf); +int msgget (key_t key, int msgflg); +ssize_t msgrcv (int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg); +int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg); + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_MSG_H */ diff --git a/winsup/cygwin/include/sys/sem.h b/winsup/cygwin/include/sys/sem.h new file mode 100644 index 000000000..bafd6c8d5 --- /dev/null +++ b/winsup/cygwin/include/sys/sem.h @@ -0,0 +1,95 @@ +/* sys/sem.h + + Copyright 2002 Red Hat Inc. + Written by Conrad Scott <conrad.scott@dsl.pipex.com> + +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 _SYS_SEM_H +#define _SYS_SEM_H + +#include <sys/ipc.h> + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* Semaphore operation flags: + */ +#define SEM_UNDO /* Set up adjust on exit entry. */ + +/* Command definitions for the semctl () function: + */ +#define GETNCNT 0x3000 /* Get semncnt. */ +#define GETPID 0x3001 /* Get sempid. */ +#define GETVAL 0x3002 /* Get semval. */ +#define GETALL 0x3003 /* Get all cases of semval. */ +#define GETZCNT 0x3004 /* Get semzcnt. */ +#define SETVAL 0x3005 /* Set semval. */ +#define SETALL 0x3006 /* Set all cases of semval. */ + +#define SEM_STAT 0x3010 /* For ipcs(8). */ +#define SEM_INFO 0x3011 /* For ipcs(8). */ + +struct semid_ds +{ + struct ipc_perm sem_perm; /* Operation permission structure. */ + 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 (). */ + long sem_spare4[2]; +}; + +#define sem_otime sem_otim.tv_sec +#define sem_ctime sem_ctim.tv_sec + +struct sembuf +{ + unsigned short sem_num; /* Semaphore number. */ + short sem_op; /* Semaphore operation. */ + short sem_flg; /* Operation flags. */ +}; + +/* 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]; +}; + +/* 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. */ +}; + +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); + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_SEM_H */ diff --git a/winsup/cygwin/include/sys/shm.h b/winsup/cygwin/include/sys/shm.h index 15be9e649..f800454da 100644 --- a/winsup/cygwin/include/sys/shm.h +++ b/winsup/cygwin/include/sys/shm.h @@ -19,36 +19,35 @@ extern "C" { #endif -/* - * 64 Kb was hardcoded for x86. MS states this may change, but we need +/* 64 Kb was hardcoded for x86. MS states this may change, but we need * it in the header file. */ -#define SHMLBA 65536 +#define SHMLBA 65536 /* Segment low boundary address multiple. */ -/* - * Values for the shmflg argument to shmat(2). +/* Shared memory operation flags: */ -#define SHM_RDONLY 0x01 /* Attach read-only, not read/write. */ -#define SHM_RND 0x02 /* Round shmaddr down to multiple of SHMLBA. */ +#define SHM_RDONLY 0x01 /* Attach read-only (else read-write). */ +#define SHM_RND 0x02 /* Round attach address to SHMLBA. */ -/* - * Values for the cmd argument to shmctl(2). - * Commands 4000-4fff are reserved for SHM_xxx. +/* Command definitions for the semctl () function: */ #define SHM_STAT 0x4000 /* For ipcs(8) */ #define SHM_INFO 0x4001 /* For ipcs(8) */ +/* Unsigned integer used for the number of current attaches. + */ typedef long int shmatt_t; -struct shmid_ds { - struct ipc_perm shm_perm; - size_t shm_segsz; - pid_t shm_lpid; - pid_t shm_cpid; - shmatt_t shm_nattch; - timestruc_t shm_atim; - timestruc_t shm_dtim; - timestruc_t shm_ctim; +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]; }; @@ -56,20 +55,35 @@ struct shmid_ds { #define shm_dtime shm_dtim.tv_sec #define shm_ctime shm_ctim.tv_sec -/* Buffer type for shmctl(IPC_INFO, ...) as used by ipcs(8). */ -struct shminfo { - unsigned long shmmax; - unsigned long shmmin; - unsigned long shmmni; - unsigned long shmseg; - unsigned long shmall; +/* 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]; }; -void *shmat(int shmid, const void *shmaddr, int shmflg); -int shmctl(int shmid, int cmd, struct shmid_ds *buf); -int shmdt(const void *shmaddr); -int shmget(key_t key, size_t size, int shmflg); +/* 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. */ +}; + +void *shmat (int shmid, const void *shmaddr, int shmflg); +int shmctl (int shmid, int cmd, struct shmid_ds *buf); +int shmdt (const void *shmaddr); +int shmget (key_t key, size_t size, int shmflg); #ifdef __cplusplus } |