filesize = ftell(fp); fclose(fp); returnfilesize; } 此种以打开文件的方法取得文件的大小,不适合大文件,并且可能会出现访问冲突(比如正在下载的文件),效率也比较低 方法二、 范例: #include <sys/stat.h> unsignedlongget_file_size(constchar*path) { unsignedlongfilesize = -1; structstat statbuff;...
unsigned long get_file_size(const char *path) { unsigned long filesize = -1; struct stat statbuff; if(stat(path, &statbuff) < 0){ return filesize; }else{ filesize = statbuff.st_size; } return filesize; } 结构体定义如下: structstat { dev_t st_dev; /* ID of device containing...
一、通过http URL 获取图片流 转为字节数组 /** * 获取 文件 流 * @param url * @return * @throws IOException...con.setConnectTimeout(4 * 1000); InputStream inStream = con .getInputStream(); //通过输入流获取图片数据...inStream.close(); byte[] data = outStream.toByteArray(); return...
(error_code & X86_PF_USER) && !(regs->flags & X86_EFLAGS_AC))) { /* * No extable entry here. This was a kernel access to an * invalid pointer. get_kernel_nofault() will not get here. */ page_fault_oops(regs, error_code, address); return; } /* * If we're in an inte...
%s represents the total size (in bytes) of the file. After running the above command, you’ll see the file size displayed on your terminal like this: As you can see, the file size is displayed as 10000000 bytes, which translates to 10MB. Note that stat does not provide a built-in ...
Options: -A check all filesystems -C [<fd>] display progress bar; file descriptor is for GUIs -l lock the device to guarantee exclusive access -M do not check mounted filesystems -N do not execute, just show what would be done -P check filesystems in parallel, including root -R ...
1、使用file_get_contents() 复制代码 代码如下: <?php $file = file_get_contents($ur... 1.8K10 ifstream java_使用ifstream :: seekg和tellg获取文件大小 当我尝试获取文件大小时,我有以下块来测试seekg和tellg的行为: int size = 0; ifstream in(fileName.c_str(), ifstream::in | ifstream ...
The%sshows total size of the file in bytes. stat -c %s FILENAME or stat --format=%s FILENAME Example; stat --format=%s wp-config.php Sample output; 3598 Similarly,stat -c %s wp-config.phpshould give the same result. How to get byte count in a file using du command ...
1.通过kmalloc, get_free_pages, vmalloc等分配一段虚拟地址 2.如果是使用kmalloc, get_free_pages分配的虚拟地址,那么使用virt_to_phys()将其转化为物理地址,再将得到的物理地址通过”phys>>PAGE_SHIFT”获取其对应的物理页面帧号。或者直接使用virt_to_page从虚拟地址获取得到对应的物理页面帧号。如果是使用vmal...
在官网左侧的“Get BusyBox”栏有一行“Download Source”,点击“Download Source”即可打开 BusyBox 的下载页,如下所示:从上面可以看出,目前最新的 BusyBox 版本是 1.36.1,不过本次不考虑使用最新的版本进行构建,选择一个比较新的就行,本次选择的是 busybox-1.32.0.tar.bz2。BusyBox 下载好以后我们就开始构建...