telldir(3) — Справочная страница Linux

telldir(3)              Library Functions Manual              telldir(3)

ИМЯ

       telldir - return current location in directory stream

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #include <dirent.h>

       long telldir(DIR *dirp);

   Feature Test Macro Requirements for glibc (see
   feature_test_macros(7)):

       telldir():
           _XOPEN_SOURCE
              || /* glibc >= 2.19: */ _DEFAULT_SOURCE
              || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

ОПИСАНИЕ

       The telldir() function returns the current location associated
       with the directory stream dirp.

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       On success, the telldir() function returns the current location
       in the directory stream.  On error, -1 is returned, and errno is
       set to indicate the error.

ОШИБКИ

       EBADF  Invalid directory stream descriptor dirp.

АТРИБУТЫ

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌─────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                           │ Attribute     │ Value   │
       ├─────────────────────────────────────┼───────────────┼─────────┤
       │ telldir()                           │ Thread safety │ MT-Safe │
       └─────────────────────────────────────┴───────────────┴─────────┘

СТАНДАРТЫ

       POSIX.1-2008.

ИСТОРИЯ

       POSIX.1-2001, 4.3BSD.

       Up to glibc 2.1.1, the return type of telldir() was off_t.
       POSIX.1-2001 specifies long, and this is the type used since
       glibc 2.1.2.

       In early filesystems, the value returned by telldir() was a
       simple file offset within a directory.  Modern filesystems use
       tree or hash structures, rather than flat tables, to represent
       directories.  On such filesystems, the value returned by
       telldir() (and used internally by readdir(3)) is a "cookie" that
       is used by the implementation to derive a position within a
       directory.  Application programs should treat this strictly as an
       opaque value, making no assumptions about its contents.

СМОТРИТЕ ТАКЖЕ

       closedir(3), opendir(3), readdir(3), rewinddir(3), scandir(3),
       seekdir(3)

КОЛОФОН

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
       the project can be found at 
       ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
       fetched from
       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
       2024-06-26.  If you discover any rendering problems in this HTML
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       part of the original manual page), send a mail to
       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                     telldir(3)

Страницы, ссылающиеся на эту: closedir(3), dirfd(3), opendir(3), readdir(3), rewinddir(3), scandir(3), seekdir(3)