loop_fd;struct loop_info64 info;// 打开文件fd = open("image.img", O_RDWR);if (fd == -1) {perror("open");exit(1);}// 打开回环设备loop_fd = open(DEVICE_PATH, O
1015 static int loop_clr_fd(struct loop_device *lo)1016 {1017 struct file *filp = lo->lo_backing_file;1018 gfp_t gfp = lo->old_gfp_mask;1019 struct block_device *bdev = lo->lo_device;1020 1021 if (lo->lo_state != Lo_bound)...
err = loop_clr_fd(lo); if (!err) return; goto unlock_index; } else if (lo->lo_state == Lo_bound) { /* * Otherwise keep thread (if running) and config, @@ -1662,8 +1662,9 @@ static void lo_release(struct gendisk *disk, fmode_t mode) blk_mq_unfreeze_queue(lo->...
ioctl(-1, LOOP_SET_FD, magic); printf("ioctl(-1, LOOP_SET_FD, %d) = -1 EBADF (%m)\n", magic); ioctl(-1, LOOP_CLR_FD, 0); printf("ioctl(-1, LOOP_CLR_FD) = -1 EBADF (%m)\n"); struct loop_info *const info = tail_alloc(sizeof(*info)); fill_memory((void *) inf...
close(fd); close(file_fd); return0; } intLoop::destroyByDevice(constchar*loopDevice){ intdevice_fd; device_fd=open(loopDevice,O_RDONLY); if(device_fd<0){ SLOGE("Failed to open loop (%d)",errno); return-1; } if(ioctl(device_fd,LOOP_CLR_FD,0)<0){ ...
An fd_set is a fixed size buffer. Executing FD_CLR() or FD_SET() with a value of fd that is negative or is equal to or larger than FD_SETSIZE will result in undefined behavior. 明确说了,如果调用FD_SET之类的宏fd超过了FD_SETSIZE将导致undefined behavior。也有人专门做了测试:select sys...
LOOP_CLR_FD Отвязываетзакольцованноеустройствоотфайловогодескриптора. LOOP_SET_STATUS Назначает состояние (передаваемое в третьемаргументе ioctl(2)) зако...
(fd_set*)0,&waitd);if(err <0)continue;if(FD_ISSET(thefd, &read_flags)) {//Socket ready for readingFD_CLR(thefd, &read_flags); memset(&inbuff,0,sizeof(inbuff));if(read(thefd, inbuff,sizeof(inbuff)-1) <=0) { close(thefd);break; ...
4 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; MAXTHON 2.0) 5 Host: localhost 6 Connection: Keep-Alive 7 我为每一行都添加了行号,第1行就是initial line,2-6行是header lines,7行是一个header line的结束符,没有显示出来。 以下是一个回应报文: 1...
经营范围一般经营项目是:魔术贴、魔术贴扎带、背胶魔术贴的生产、销售、研发;普通货运(《道路运输经营许可证》有效期至2014-12-31);国内商业、物资供销业,货物及技术进出口。(以上项目均不含法律、行政法规、国务院决定规定需前置审批及禁止项目),许可经营项目是: ...