diff options
Diffstat (limited to 'winsup/cygwin/cygserver_shm.h')
| -rw-r--r-- | winsup/cygwin/cygserver_shm.h | 135 |
1 files changed, 43 insertions, 92 deletions
diff --git a/winsup/cygwin/cygserver_shm.h b/winsup/cygwin/cygserver_shm.h index 55f3bbe36..e7d02959e 100644 --- a/winsup/cygwin/cygserver_shm.h +++ b/winsup/cygwin/cygserver_shm.h @@ -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 (); + virtual void serve (transport_layer_base *, process_cache *); #endif -#ifndef __INSIDE_CYGWIN__ - virtual void serve (transport_layer_base *, process_cache *); +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__ */ |