182 lines
4.4 KiB
C++
182 lines
4.4 KiB
C++
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/* msg.cc: XSI IPC interface for Cygwin.
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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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#include "winsup.h"
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#include <unistd.h>
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#include "sigproc.h"
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#include "cygtls.h"
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#include "cygserver_msg.h"
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/*
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* client_request_msg Constructors
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*/
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client_request_msg::client_request_msg (int msqid,
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int cmd,
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struct msqid_ds *buf)
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: client_request (CYGSERVER_REQUEST_MSG, &_parameters, sizeof (_parameters))
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{
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_parameters.in.msgop = MSGOP_msgctl;
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ipc_set_proc_info (_parameters.in.ipcblk);
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_parameters.in.ctlargs.msqid = msqid;
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_parameters.in.ctlargs.cmd = cmd;
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_parameters.in.ctlargs.buf = buf;
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msglen (sizeof (_parameters.in));
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}
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client_request_msg::client_request_msg (key_t key,
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int msgflg)
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: client_request (CYGSERVER_REQUEST_MSG, &_parameters, sizeof (_parameters))
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{
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_parameters.in.msgop = MSGOP_msgget;
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ipc_set_proc_info (_parameters.in.ipcblk);
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_parameters.in.getargs.key = key;
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_parameters.in.getargs.msgflg = msgflg;
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msglen (sizeof (_parameters.in));
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}
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client_request_msg::client_request_msg (int msqid,
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void *msgp,
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size_t msgsz,
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long msgtyp,
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int msgflg)
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: client_request (CYGSERVER_REQUEST_MSG, &_parameters, sizeof (_parameters))
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{
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_parameters.in.msgop = MSGOP_msgrcv;
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ipc_set_proc_info (_parameters.in.ipcblk);
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_parameters.in.rcvargs.msqid = msqid;
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_parameters.in.rcvargs.msgp = msgp;
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_parameters.in.rcvargs.msgsz = msgsz;
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_parameters.in.rcvargs.msgtyp = msgtyp;
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_parameters.in.rcvargs.msgflg = msgflg;
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msglen (sizeof (_parameters.in));
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}
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client_request_msg::client_request_msg (int msqid,
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const void *msgp,
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size_t msgsz,
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int msgflg)
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: client_request (CYGSERVER_REQUEST_MSG, &_parameters, sizeof (_parameters))
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{
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_parameters.in.msgop = MSGOP_msgsnd;
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ipc_set_proc_info (_parameters.in.ipcblk);
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_parameters.in.sndargs.msqid = msqid;
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_parameters.in.sndargs.msgp = msgp;
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_parameters.in.sndargs.msgsz = msgsz;
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_parameters.in.sndargs.msgflg = msgflg;
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msglen (sizeof (_parameters.in));
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}
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/*
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* XSI message queue API. These are exported by the DLL.
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*/
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extern "C" int
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msgctl (int msqid, int cmd, struct msqid_ds *buf)
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{
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syscall_printf ("msgctl (msqid = %d, cmd = %y, buf = %p)", msqid, cmd, buf);
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__try
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{
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switch (cmd)
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{
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case IPC_STAT:
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break;
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case IPC_SET:
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break;
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case IPC_RMID:
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break;
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case IPC_INFO:
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break;
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case MSG_INFO:
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break;
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default:
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syscall_printf ("-1 [%d] = msgctl ()", EINVAL);
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set_errno (EINVAL);
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__leave;
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}
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client_request_msg request (msqid, cmd, buf);
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if (request.make_request () == -1 || request.retval () == -1)
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{
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syscall_printf ("-1 [%d] = msgctl ()", request.error_code ());
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set_errno (request.error_code ());
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__leave;
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}
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return request.retval ();
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}
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__except (EFAULT) {}
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__endtry
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return -1;
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}
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extern "C" int
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msgget (key_t key, int msgflg)
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{
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syscall_printf ("msgget (key = %U, msgflg = %y)", key, msgflg);
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client_request_msg request (key, msgflg);
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if (request.make_request () == -1 || request.retval () == -1)
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{
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syscall_printf ("-1 [%d] = msgget ()", request.error_code ());
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set_errno (request.error_code ());
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return -1;
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}
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return request.retval ();
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}
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extern "C" ssize_t
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msgrcv (int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg)
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{
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syscall_printf ("msgrcv (msqid = %d, msgp = %p, msgsz = %ld, "
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"msgtyp = %d, msgflg = %y)",
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msqid, msgp, msgsz, msgtyp, msgflg);
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__try
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{
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client_request_msg request (msqid, msgp, msgsz, msgtyp, msgflg);
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if (request.make_request () == -1 || request.rcvval () == -1)
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{
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syscall_printf ("-1 [%d] = msgrcv ()", request.error_code ());
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set_errno (request.error_code ());
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__leave;
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}
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return request.rcvval ();
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}
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__except (EFAULT) {}
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__endtry
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return -1;
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}
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extern "C" int
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msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg)
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{
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syscall_printf ("msgsnd (msqid = %d, msgp = %p, msgsz = %ld, msgflg = %y)",
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msqid, msgp, msgsz, msgflg);
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__try
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{
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client_request_msg request (msqid, msgp, msgsz, msgflg);
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if (request.make_request () == -1 || request.retval () == -1)
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{
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syscall_printf ("-1 [%d] = msgsnd ()", request.error_code ());
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set_errno (request.error_code ());
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__leave;
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}
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return request.retval ();
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}
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__except (EFAULT) {}
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__endtry
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return -1;
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}
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