使用lstat()判断文件类型 分类： H_HISTORY 2013-02-24 11:48 703人阅读 评论(0) 收藏

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>

#define _GNU_SOURCE

int main (int argc, char *argv[]){

struct stat buf;

for(int i = 1; i < argc; i++){
if(lstat(argv[i], &buf) < 0){
printf("lstat invoke error.");
continue;
}
printf("%s is a ", argv[i]);
if (S_ISREG(buf.st_mode)){
printf("regular file.");
}else if(S_ISDIR(buf.st_mode)){
printf("direcotry.");
}else if(S_ISBLK(buf.st_mode)){
printf("block device.");
}else if(S_ISCHR(buf.st_mode)){
printf("character device.");
}else if(S_ISFIFO(buf.st_mode)){
printf("FIFO.");
}else if(S_ISLNK(buf.st_mode)){
printf("soft link.");
}else if(S_ISSOCK(buf.st_mode)){
printf("socket.");
}else
printf("Unkown type.");
}

printf("\n");

exit(0);
}

filetype.c: In function ‘main’:
filetype.c:14:9: warning: implicit declaration of function ‘lstat’ [-Wimplicit-function-declaration]
filetype.c:31:9: warning: implicit declaration of function ‘S_ISSOCK’ [-Wimplicit-function-declaration]
/tmp/ccLbzony.o: In function `main':
filetype.c:(.text+0x182): undefined reference to `S_ISSOCK'
collect2: error: ld returned 1 exit status