GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
Debian 6.0.7(Squeeze) |
|
 |
opendir(3) |
 |
opendir, fdopendir − open a directory
#include
<sys/types.h>
#include <dirent.h>
DIR
*opendir(const char *name);
DIR *fdopendir(int fd);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
fdopendir():
Since glibc 2.10:
_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
Before glibc 2.10:
_GNU_SOURCE
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 fdopendir() function is like opendir(), but returns a directory stream for the directory referred to by the open file descriptor fd. After a successful call to fdopendir(), fd is used internally by the implementation, and should not otherwise be used by the application.
The opendir() and fdopendir() functions return a pointer to the directory stream. On error, NULL is returned, and errno is set appropriately.
|
EACCES |
Permission denied. | ||
|
EBADF |
fd is not a valid file descriptor opened for reading. | ||
|
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.
fdopendir() is available in glibc since version 2.4.
opendir() is present on SVr4, 4.3BSD, and specified in POSIX.1-2001. fdopendir() is specified in POSIX.1-2008.
The underlying file descriptor of the directory stream can be obtained using dirfd(3).
The 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 descriptor, fd. POSIX.1-200x leaves it unspecified whether a successful call to fdopendir() will set the close-on-exec flag for the file descriptor, fd.
open(2), closedir(3), dirfd(3), readdir(3), rewinddir(3), scandir(3), seekdir(3), telldir(3)
This page is part of release 3.27 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/.
|
opendir(3) | |