diff options
Diffstat (limited to 'winsup/cygwin/sem.cc')
| -rw-r--r-- | winsup/cygwin/sem.cc | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/winsup/cygwin/sem.cc b/winsup/cygwin/sem.cc deleted file mode 100644 index 1d7f53c67..000000000 --- a/winsup/cygwin/sem.cc +++ /dev/null @@ -1,176 +0,0 @@ -/* sem.cc: XSI 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. */ - -#include "winsup.h" -#include "cygerrno.h" -#include <signal.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 - 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 ()); - if (request.error_code () == ENOSYS) - raise (SIGSYS); - return -1; - } - return request.retval (); -#else - set_errno (ENOSYS); - raise (SIGSYS); - return -1; -#endif -} - -extern "C" int -semget (key_t key, int nsems, int semflg) -{ -#ifdef USE_SERVER - 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] = semget ()", request.error_code ()); - set_errno (request.error_code ()); - if (request.error_code () == ENOSYS) - raise (SIGSYS); - return -1; - } - return request.retval (); -#else - set_errno (ENOSYS); - raise (SIGSYS); - return -1; -#endif -} - -extern "C" int -semop (int semid, struct sembuf *sops, size_t nsops) -{ -#ifdef USE_SERVER - 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] = semop ()", request.error_code ()); - set_errno (request.error_code ()); - if (request.error_code () == ENOSYS) - raise (SIGSYS); - return -1; - } - return request.retval (); -#else - set_errno (ENOSYS); - raise (SIGSYS); - return -1; -#endif -} |