NAME

       opendir, fdopendir - open a directory

SYNOPSIS

       #include <sys/types.h>
       #include <dirent.h>

       DIR *opendir(const char *name);
       DIR *fdopendir(int fd);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       fdopendir():
           Since glibc 2.10:
               _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:
               _GNU_SOURCE

DESCRIPTION

       The  opendir()  function  opens  a  directory  stream  corresponding to the directory name, and returns a
       pointer to the directory stream.  The stream is positioned at the first entry in the directory.

       The fdopendir() function is like opendir(), but returns a directory stream for the directory referred  to
       by  the  open  file  descriptor fd.  After a successful call to fdopendir(), fd is used internally by the
       implementation, and should not otherwise be used by the application.

RETURN VALUE

       The opendir() and fdopendir() functions return a pointer to the directory  stream.   On  error,  NULL  is
       returned, and errno is set appropriately.

ERRORS

       EACCES Permission denied.

       EBADF  fd is not a valid file descriptor opened for reading.

       EMFILE Too many file descriptors in use by process.

       ENFILE Too many files are currently open in the system.

       ENOENT Directory does not exist, or name is an empty string.

       ENOMEM Insufficient memory to complete the operation.

       ENOTDIR
              name is not a directory.

VERSIONS

       fdopendir() is available in glibc since version 2.4.

CONFORMING TO

       opendir()  is  present  on  SVr4,  4.3BSD,  and  specified  in POSIX.1-2001.  fdopendir() is specified in
       POSIX.1-2008.

NOTES

       The underlying file descriptor of the directory stream can be obtained using dirfd(3).

       The opendir() function sets the close-on-exec flag for the file descriptor underlying  the  DIR  *.   The
       fdopendir()  function leaves the setting of the close-on-exec flag unchanged for the file descriptor, fd.
       POSIX.1-200x leaves it unspecified whether a successful call to fdopendir() will  set  the  close-on-exec
       flag for the file descriptor, fd.

SEE ALSO

       open(2), closedir(3), dirfd(3), readdir(3), rewinddir(3), scandir(3), seekdir(3), telldir(3)

COLOPHON

       This  page  is  part  of  release 3.54 of the Linux man-pages project.  A description of the project, and
       information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.