linux操作系统设计论文,关于Linux操作系统设计研究毕业设计论文

操作系统设计论文,关于Linux操作系统设计研究毕业设计论文"/>

linux操作系统设计论文,关于Linux操作系统设计研究毕业设计论文

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1、rr=EACCES；eak；}蚌埠学院本科毕业设计(论文)if(err)gotodone；switch(cmd){caseRTC_ALM_READ:mutex_unlock(amrtcgtos_lock)；err=rtc_read_alarm(rtc,amalarm)；if(erros_lock)；if(coy_from_user(amalarmtime,uarg,sizeof(tm)))returnEFAULT；alarmenabled=；alarmending=；alarmtimetm_wday=；alarmtimetm_yday=；alarmtimetm_isdst=；{unsignedlongnow,then；err=rtc_read_time(rtc,amtm)；if(errlt)returnerr；rtc_tm_to_time(amtm,amnow)；alarmtimetm_mday=tmtm_mday；alarmtimetm_mon=tmtm_mon；alarmtimetm_year=tmtm_year；err=rtc_valid_tm(amalarmtime)；陈伟强：基于Linux操作系统下RTC驱动开发if(erros_lock)；err=rtc_read_time(rtc,amtm)；if(erros_lock)；if(coy_from_user(amtm,uarg,sizeof(tm)))returnEFAULT；returnrtc_set_time(rtc,amtm)；caseRTC_PIE_ON:err=rtc_irq_set_state(rtc,NULL,)；eak；caseRTC_PIE_OFF:err=rtc_irq_set_sta。

2、ze_tret；if(count!=sizeof(unsignedint)amamcountirq_queue,amwait)；do{__set_current_state(TASK_INTERRUPTIBLE)；sin_lock_irq(amrtcgtirq_lock)；data=rtcgtirq_data；rtcgtirq_data=；sin_unlock_irq(amrtcgtirq_lock)；if(data!=){蚌埠学院本科毕业设计(论文)ret=；eak；}if(filegtf_flagsamO_NONBLOCK){ret=EAGAIN；eak；}if(signal_ending(current)){ret=ERESTARTSYS；eak；}schedule()；}while()；set_current_state(TASK_RUNNING)；remove_wait_queue(amrtcgtirq_queue,amwait)；if(ret==){if(rtcgtosgtread_callback)data=rtcgtosgtread_callback(rtcgtdevarent,data)；if(sizeof(int)!=sizeof(long)amamcount==sizeof(unsignedint))ret=ut_user(data,(unsignedint__user*)buf)?:sizeof(unsignedint)；elseret=ut_user(data,(unsignedlong__user*)buf)?:sizeof(unsignedlong)；}returnret；}staticunsignedintrtc_dev_oll(st。

3、m)))returnEFAULT；returnrtc_set_alarm(rtc,amalarm)；caseRTC_WKALM_RD:mutex_unlock(amrtcgtos_lock)；err=rtc_read_alarm(rtc,amalarm(retval==)陈伟强：基于Linux操作系统下RTC驱动开发{error(quotselectquot)；exit(errno)；}retval=read(fd,amdata,sizeof(unsignedlong))；if(retval==){error(quotreadquot)；exit(errno)；}frintf(stderr,quot%dquot,i)；fflush(stderr)；irqcount++；}retval=ioctl(fd,RTC_UIE_OFF,)；if(retval==){error(quotRTC_UIE_OFFioctlquot)；exit(errno)；}test_READ:retval=ioctl(fd,RTC_RD_TIME,amrtc_tm)；if(retval==){error(quotRTC_RD_TIMEioctlquot)；exit(errno)；}frintf(stderr,quot\n\nCurrentRTCdatetimeis%d%d%d,%d:%d:%d\nquot,rtc_tmtm_mday,rtc_tmtm_mon+,rtc_tmtm_year+,rtc_tmtm_hour,rtc_tmtm_min,rtc_tmtm_sec)；rtc_tmtm_sec+=；蚌埠学院本科毕业设计(论文)if(rtc_tmtm_secgt=){rtc_tmtm_sec%=。

4、rtc_tmtm_min++；}if(rtc_tmtm_min==){rtc_tmtm_min=；rtc_tmtm_hour++；}if(rtc_tmtm_hour==)rtc_tmtm_hour=；retval=ioctl(fd,RTC_ALM_SET,amrtc_tm)；if(retval==){if(errno==ENOTTY){frintf(stderr,quot\nAlarmIRQsnotsuorted\nquot)；gototest_PIE；}error(quotRTC_ALM_SETioctlquot)；exit(errno)；}retval=ioctl(fd,RTC_ALM_READ,amrtc_tm)；if(retval==){error(quotRTC_ALM_READioctlquot)；exit(errno)；}frintf(stderr,quotAlarmtimenowsetto%d:%d:%d\nquot,rtc_tmtm_hour,rtc_tmtm_min,rtc_tmtm_sec)；陈伟强：基于Linux操作系统下RTC驱动开发retval=ioctl(fd,RTC_AIE_ON,)；if(retval==){error(quotRTC_AIE_ONioctlquot)；exit(errno)；}frintf(stderr,quotWaitingsecondsforalarmquot)；fflush(stderr)；retval=read(fd,amdata,sizeof(unsignedlong))；if(retval==){error(quotreadquot)；exit(errno)；}irqcount++；frintf(std。

5、ructfile*file,oll_table*wait){structrtc_device*rtc=filegtrivate_data；unsignedlongdata；oll_wait(file,amrtcgtirq_queue,wait)；陈伟强：基于Linux操作系统下RTC驱动开发data=rtcgtirq_data；return(data!=)?(POLLIN|POLLRDNORM):；}staticlongrtc_dev_ioctl(structfile*file,unsignedintcmd,unsignedlongarg){interr=；structrtc_device*rtc=filegtrivate_data；conststructrtc_class_os*os=rtcgtos；structrtc_timetm；structrtc_wkalrmalarm；void__user*uarg=(void__user*)arg；err=mutex_lock_interrutible(amrtcgtos_lock)；if(err)returnerr；switch(cmd){caseRTC_EPOCH_SET:caseRTC_SET_TIME:if(!caable(CAP_SYS_TIME))err=EACCES；eak；caseRTC_IRQP_SET:if(arggtrtcgtmax_user_freqamam!caable(CAP_SYS_RESOURCE))err=EACCES；eak；caseRTC_PIE_ON:if(rtcgtirq_freqgtrtcgtmax_user_freqamam!caable(CAP_SYS_RESOURCE))。

6、。

7、ze_tret；if(count!=sizeof(unsignedint)amamcountirq_queue,amwait)；do{__set_current_state(TASK_INTERRUPTIBLE)；sin_lock_irq(amrtcgtirq_lock)；data=rtcgtirq_data；rtcgtirq_data=；sin_unlock_irq(amrtcgtirq_lock)；if(data!=){蚌埠学院本科毕业设计(论文)ret=；eak；}if(filegtf_flagsamO_NONBLOCK){ret=EAGAIN；eak；}if(signal_ending(current)){ret=ERESTARTSYS；eak；}schedule()；}while()；set_current_state(TASK_RUNNING)；remove_wait_queue(amrtcgtirq_queue,amwait)；if(ret==){if(rtcgtosgtread_callback)data=rtcgtosgtread_callback(rtcgtdevarent,data)；if(sizeof(int)!=sizeof(long)amamcount==sizeof(unsignedint))ret=ut_user(data,(unsignedint__user*)buf)?:sizeof(unsignedint)；elseret=ut_user(data,(unsignedlong__user*)buf)?:sizeof(unsignedlong)；}returnret；}staticunsignedintrtc_dev_oll(st。

8、rr=EACCES；eak；}蚌埠学院本科毕业设计(论文)if(err)gotodone；switch(cmd){caseRTC_ALM_READ:mutex_unlock(amrtcgtos_lock)；err=rtc_read_alarm(rtc,amalarm)；if(erros_lock)；if(coy_from_user(amalarmtime,uarg,sizeof(tm)))returnEFAULT；alarmenabled=；alarmending=；alarmtimetm_wday=；alarmtimetm_yday=；alarmtimetm_isdst=；{unsignedlongnow,then；err=rtc_read_time(rtc,amtm)；if(errlt)returnerr；rtc_tm_to_time(amtm,amnow)；alarmtimetm_mday=tmtm_mday；alarmtimetm_mon=tmtm_mon；alarmtimetm_year=tmtm_year；err=rtc_valid_tm(amalarmtime)；陈伟强：基于Linux操作系统下RTC驱动开发if(erros_lock)；err=rtc_read_time(rtc,amtm)；if(erros_lock)；if(coy_from_user(amtm,uarg,sizeof(tm)))returnEFAULT；returnrtc_set_time(rtc,amtm)；caseRTC_PIE_ON:err=rtc_irq_set_state(rtc,NULL,)；eak；caseRTC_PIE_OFF:err=rtc_irq_set_sta。

9、m)))returnEFAULT；returnrtc_set_alarm(rtc,amalarm)；caseRTC_WKALM_RD:mutex_unlock(amrtcgtos_lock)；err=rtc_read_alarm(rtc,amalarm(retval==)陈伟强：基于Linux操作系统下RTC驱动开发{error(quotselectquot)；exit(errno)；}retval=read(fd,amdata,sizeof(unsignedlong))；if(retval==){error(quotreadquot)；exit(errno)；}frintf(stderr,quot%dquot,i)；fflush(stderr)；irqcount++；}retval=ioctl(fd,RTC_UIE_OFF,)；if(retval==){error(quotRTC_UIE_OFFioctlquot)；exit(errno)；}test_READ:retval=ioctl(fd,RTC_RD_TIME,amrtc_tm)；if(retval==){error(quotRTC_RD_TIMEioctlquot)；exit(errno)；}frintf(stderr,quot\n\nCurrentRTCdatetimeis%d%d%d,%d:%d:%d\nquot,rtc_tmtm_mday,rtc_tmtm_mon+,rtc_tmtm_year+,rtc_tmtm_hour,rtc_tmtm_min,rtc_tmtm_sec)；rtc_tmtm_sec+=；蚌埠学院本科毕业设计(论文)if(rtc_tmtm_secgt=){rtc_tmtm_sec%=。