Section (3) opendir
opendir, fdopendir — open a directory
#include <sys/types.h> #include <dirent.h>
||const char *name
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.
fdopendir() function is
opendir(), but returns a
directory stream for the directory referred to by the open
After a successful call to
fd is used internally by the
implementation, and should not otherwise be used by the
fdopendir() functions return a
pointer to the directory stream. On error, NULL is returned,
errno is set
fdis not a valid file descriptor opened for reading.
The per-process limit on the number of open file descriptors has been reached.
The system-wide limit on the total number of open files has been reached.
Directory does not exist, or
nameis an empty string.
Insufficient memory to complete the operation.
nameis not a directory.
For an explanation of the terms used in this section, see attributes(7).
opendir() is present on
SVr4, 4.3BSD, and specified in POSIX.1-2001.
fdopendir() is specified in
Filename entries can be read from a directory stream using readdir(3).
The underlying file descriptor of the directory stream can be obtained using dirfd(3).
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
POSIX.1-200x leaves it unspecified whether a successful call
fdopendir() will set the
close-on-exec flag for the file descriptor,
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Copyright (C) 1993 David Metcalfe (davidprism.demon.co.uk)
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Linux libc source code
Lewine_zsingle_quotesz_s _POSIX Programmer_zsingle_quotesz_s Guide_ (O_zsingle_quotesz_Reilly & Associates, 1991)
386BSD man pages
Modified Sat Jul 24 18:46:01 1993 by Rik Faith (faithcs.unc.edu)
Modified 11 June 1995 by Andries Brouwer (aebcwi.nl)
2007-07-30 Ulrich Drepper <drepperredhat.com>: document fdopendir().