Linux 如何检查这是目录路径还是任何文件名路径？
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How can I check whether this is directory-path or any filename-path?
提问by Jeegar Patel
by this
这样
Why does fopen("any_path_name",'r') not give NULL as return?
为什么 fopen("any_path_name",'r') 不返回 NULL 作为返回值？
i get to know that in linux directories and files are considered to be file. so when i give any directory-path or file-path in fopen with read mode it doesnt give NULL file descriptor and?
我知道在 linux 中目录和文件被认为是文件。因此，当我在 fopen 中以读取模式提供任何目录路径或文件路径时，它不会提供 NULL 文件描述符，并且？
so how can i check that whether it is dirctory path or file-path ? if i am getting some path from command argument?
那么我如何检查它是目录路径还是文件路径？如果我从命令参数中得到一些路径？
采纳答案by zed_0xff
man 2 stat:
man 2 stat：
NAME
fstat, fstat64, lstat, lstat64, stat, stat64 -- get file status
...
struct stat {
dev_t st_dev; /* ID of device containing file */
mode_t st_mode; /* Mode of file (see below) */
...
The status information word st_mode has the following bits:
...
#define S_IFDIR 0040000 /* directory */
回答by Jeegar Patel
thanks zed_0xff and lgor Oks
感谢 zed_0xff 和 lgor Oks
this things can be check by this sample code
这件事可以通过这个示例代码来检查
#include<stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
int main()
{
struct stat statbuf;
FILE *fb = fopen("/home/jeegar/","r");
if(fb==NULL)
printf("its null\n");
else
printf("not null\n");
stat("/home/jeegar/", &statbuf);
if(S_ISDIR(statbuf.st_mode))
printf("directory\n");
else
printf("file\n");
return 0;
}
output is
输出是
its null
directory
