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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.
EACCES Permission denied. 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.
SVID 3, POSIX, BSD 4.3