62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <sys/stat.h>
|
|
|
|
void error(char *msg)
|
|
{
|
|
write(2, msg, strlen(msg));
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
int fd_in = STDIN_FILENO;
|
|
int fd_out = STDOUT_FILENO;
|
|
struct stat statbuf_in;
|
|
struct stat statbuf_out;
|
|
|
|
if (fstat(fd_in, &statbuf_in) == -1)
|
|
{
|
|
perror("fstat");
|
|
return (1);
|
|
}
|
|
error("STDIN File type: ");
|
|
|
|
switch (statbuf_in.st_mode & S_IFMT) {
|
|
case S_IFBLK: error("block device\n"); break;
|
|
case S_IFCHR: error("character device\n"); break;
|
|
case S_IFDIR: error("directory\n"); break;
|
|
case S_IFIFO: error("FIFO/pipe\n"); break;
|
|
case S_IFLNK: error("symlink\n"); break;
|
|
case S_IFREG: error("regular file\n"); break;
|
|
case S_IFSOCK: error("socket\n"); break;
|
|
default: error("unknown?\n"); break;
|
|
}
|
|
|
|
|
|
error("\n");
|
|
|
|
if (fstat(fd_out, &statbuf_out) == -1)
|
|
{
|
|
perror("fstat");
|
|
return (1);
|
|
}
|
|
|
|
error("STDOUT File type: ");
|
|
|
|
switch (statbuf_out.st_mode & S_IFMT) {
|
|
case S_IFBLK: error("block device\n"); break;
|
|
case S_IFCHR: error("character device\n"); break;
|
|
case S_IFDIR: error("directory\n"); break;
|
|
case S_IFIFO: error("FIFO/pipe\n"); break;
|
|
case S_IFLNK: error("symlink\n"); break;
|
|
case S_IFREG: error("regular file\n"); break;
|
|
case S_IFSOCK: error("socket\n"); break;
|
|
default: error("unknown?\n"); break;
|
|
}
|
|
|
|
|
|
return (0);
|
|
}
|