DOKK / manpages / debian 11 / manpages-pt-dev / opendir.3.pt
OPENDIR(3) Linux Programmer's Manual OPENDIR(3)

opendir - open a directory

#include <sys/types.h>

#include <dirent.h>

DIR *opendir(const char *name);

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 opendir() function returns a pointer to the directory stream or NULL if an error occurred.

Permission denied.
Too many file descriptors in use by process.
Too many files are currently open in the system.
Directory does not exist, or name is an empty string.
Insufficient memory to complete the operation.
name is not a directory.

SVID 3, POSIX, BSD 4.3

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

11 June 1995