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. On error, NULL is returned, and errno is set appropriately.

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.

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

SVID 3, POSIX, 4.3BSD

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

1995-06-11

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