initgroups(3) — Справочная страница Linux

initgroups(3)           Library Functions Manual           initgroups(3)

ИМЯ

       initgroups - initialize the supplementary group access list

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #include <sys/types.h>
       #include <grp.h>

       int initgroups(const char *user, gid_t group);

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

       initgroups():
           Since glibc 2.19:
               _DEFAULT_SOURCE
           glibc 2.19 and earlier:
               _BSD_SOURCE

ОПИСАНИЕ

       The initgroups() function initializes the group access list by
       reading the group database /etc/group and using all groups of
       which user is a member.  The additional group group is also added
       to the list.

       The user argument must be non-NULL.

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       The initgroups() function returns 0 on success.  On error, -1 is
       returned, and errno is set to indicate the error.

ОШИБКИ

       ENOMEM Insufficient memory to allocate group information
              structure.

       EPERM  The calling process has insufficient privilege.  See the
              underlying system call setgroups(2).

ФАЙЛЫ

       /etc/group
              group database file

АТТРИБУТЫ

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

СТАНДАРТЫ

       None.

ИСТОРИЯ

       SVr4, 4.3BSD.

СМОТРИТЕ ТАКЖЕ

       getgroups(2), setgroups(2), credentials(7)

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
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       ⟨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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       man-pages@man7.org

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

Страницы, ссылающиеся на эту страницу: groups(1@@shadow-utils), getgroups(2), group(5), nss(5), credentials(7)