How to distinguish a file pointer points to a file or a directory?
i've found this near by:
#include <stdio.h>#include <errno.h>#include <sys/stat.h>int main (int argc, char *argv[]) { int status; struct stat st_buf; status = stat ("your path", &st_buf); if (status != 0) { printf ("Error, errno = %d\n", errno); return 1; } // Tell us what it is then exit. if (S_ISREG (st_buf.st_mode)) { printf ("%s is a regular file.\n", argv[1]); } if (S_ISDIR (st_buf.st_mode)) { printf ("%s is a directory.\n", argv[1]); }}
You could use fileno() to get the file discriptor for the already opened file, and then use fstat() on the file descriptor to have a struct stat returned.
It's member st_mode carries info on the file.
#include <stdio.h>#include <sys/types.h>#include <sys/stat.h>#include <unistd.h>int main(){ FILE * pf = fopen("filename", "r"); if (NULL == pf) { perror("fopen() failed"); exit(1); } { int fd = fileno(pf); struct stat ss = {0}; if (-1 == fstat(fd, &ss)) { perror("fstat() failed"); exit(1); } if (S_ISREG (ss.st_mode)) { printf ("Is's a file.\n"); } else if (S_ISDIR (ss.st_mode)) { printf ("It's a directory.\n"); } } return 0;}