|OPENDIR(3)||Linux Programmer's Manual||OPENDIR(3)|
NAMEopendir, fdopendir - open a directory
DIR *opendir(const char * name );
DIR *fdopendir(int fd );
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
- Since glibc 2.10:
- _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
- Before glibc 2.10:
DESCRIPTIONThe 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.
RETURN VALUEThe opendir() and fdopendir() functions return a pointer to the directory stream. On error, NULL is returned, and errno is set appropriately.
- Permission denied.
- fd is not a valid file descriptor opened for reading.
- 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.
VERSIONSfdopendir() is available in glibc since version 2.4.
CONFORMING TOopendir() is present on SVr4, 4.3BSD, and specified in POSIX.1-2001. fdopendir() is specified in POSIX.1-2008.
NOTESThe underlying file descriptor of the directory stream can be obtained using dirfd(3).
SEE ALSOopen(2), closedir(3), dirfd(3), readdir(3), rewinddir(3), scandir(3), seekdir(3), telldir(3)
COLOPHONThis page is part of release 3.53 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/.