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/********************************************************/
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/* ntapi: Native API core library */
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/* Copyright (C) 2013--2017 Z. Gilboa */
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/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
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/********************************************************/
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#include <psxtypes/psxtypes.h>
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#include <ntapi/nt_file.h>
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#include <ntapi/nt_string.h>
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#include <ntapi/nt_atomic.h>
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#include <ntapi/nt_port.h>
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#include <ntapi/nt_ipc.h>
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#include <ntapi/nt_sem.h>
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#include <ntapi/ntapi.h>
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#include "ntapi_impl.h"
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static int32_t __sem_set_return(
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intptr_t * hlock,
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int32_t status,
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int32_t cmd)
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{
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if (cmd == NT_SEM_CMD_SETALL)
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at_store(hlock,0);
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return status;
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}
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int32_t __stdcall __ntapi_sem_set(
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__in nt_sem_info * sem,
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__out nt_io_status_block * iosb,
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__in void * sem_info,
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__in uint32_t sem_info_length,
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__in int32_t sem_ipc_cmd)
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{
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int32_t status;
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void * hsection;
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void * secaddr;
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size_t secsize;
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nt_sem_info_msg msg;
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intptr_t * hlock;
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/* validate */
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if (!iosb)
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return NT_STATUS_INVALID_PARAMETER;
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else if (!sem_info)
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return NT_STATUS_INVALID_PARAMETER;
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else if (!sem_info_length)
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return NT_STATUS_INVALID_PARAMETER;
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else if (sem_ipc_cmd != NT_SEM_CMD_SETALL)
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if (sem_info_length != sizeof(nt_sem_info))
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return NT_STATUS_INFO_LENGTH_MISMATCH;
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/* section */
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hsection = 0;
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secaddr = 0;
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secsize = 0;
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/* SETALL */
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if (sem_ipc_cmd == NT_SEM_CMD_SETALL) {
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if (sem->section_addr) {
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hsection = sem->section;
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secaddr = sem->section_addr;
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secsize = sem->section_size;
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} else if ((status = __ntapi->ipc_init_section_by_port(
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sem->hport,&hsection,
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&secaddr,&secsize)))
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return status;
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/* data size */
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if (secsize < sem_info_length)
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return NT_STATUS_DATA_OVERRUN;
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/* lock */
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hlock = &(__ntapi_internals()->hlock);
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if (at_locked_cas(hlock,0,1))
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return NT_STATUS_RESOURCE_NOT_OWNED;
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/* data copy */
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__ntapi->tt_generic_memcpy(
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secaddr,sem_info,
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sem_info_length);
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} else
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hlock = 0;
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/* msg */
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__ntapi->tt_aligned_block_memset(
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&msg,0,sizeof(msg));
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msg.header.msg_type = NT_LPC_NEW_MESSAGE;
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msg.header.data_size = sizeof(msg.data);
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msg.header.msg_size = sizeof(msg);
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msg.data.ttyinfo.opcode = NT_TTY_SEM_SET;
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msg.data.seminfo.semcmd = sem_ipc_cmd;
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msg.data.seminfo.semkey = sem->semkey;
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msg.data.seminfo.semid = sem->semid;
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msg.data.seminfo.semnum = sem->semnum;
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msg.data.seminfo.semval = sem->semval;
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msg.data.seminfo.section_addr = secaddr;
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msg.data.seminfo.section_size = sem_info_length;
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if ((status = __ntapi->zw_request_wait_reply_port(sem->hport,&msg,&msg)))
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return __sem_set_return(hlock,status,sem_ipc_cmd);
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else if (msg.data.ttyinfo.status)
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return __sem_set_return(hlock,msg.data.ttyinfo.status,sem_ipc_cmd);
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/* reply */
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iosb->status = NT_STATUS_SUCCESS;
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iosb->info = 0;
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return __sem_set_return(hlock,NT_STATUS_SUCCESS,sem_ipc_cmd);
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}
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