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#include <dirent.h>
#include <errno.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
int
main (void)
{
DIR *dirp;
struct dirent* ent;
/* open a dir stream */
dirp = opendir ("/tmp");
if (dirp == NULL)
{
if (errno == ENOENT)
exit (0);
perror ("opendir");
exit (1);
}
/* close the directory file descriptor, making it invalid */
if (close (dirfd (dirp)) != 0)
{
puts ("could not close directory file descriptor");
/* This is not an error. It is not guaranteed this is possible. */
return 0;
}
ent = readdir (dirp);
return ent != NULL || errno != EBADF;
}
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