getpw(3) — Справочная страница Linux

getpw(3)                Library Functions Manual                getpw(3)

ИМЯ

       getpw - reconstruct password line entry

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #define _GNU_SOURCE             /* See feature_test_macros(7) */
       #include <sys/types.h>
       #include <pwd.h>

       [[deprecated]] int getpw(uid_t uid, char *buf);

ОПИСАНИЕ

       The getpw() function reconstructs the password line entry for the
       given user ID uid in the buffer buf.  The returned buffer
       contains a line of format

           name:passwd:uid:gid:gecos:dir:shell

       The passwd structure is defined in <pwd.h> as follows:

           struct passwd {
               char   *pw_name;       /* username */
               char   *pw_passwd;     /* user password */
               uid_t   pw_uid;        /* user ID */
               gid_t   pw_gid;        /* group ID */
               char   *pw_gecos;      /* user information */
               char   *pw_dir;        /* home directory */
               char   *pw_shell;      /* shell program */
           };

       For more information about the fields of this structure, see
       passwd(5).

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       The getpw() function returns 0 on success; on error, it returns
       -1, and errno is set to indicate the error.

       If uid is not found in the password database, getpw() returns -1,
       sets errno to 0, and leaves buf unchanged.

ОШИБКИ

       0 or ENOENT
              No user corresponding to uid.

       EINVAL buf is NULL.

       ENOMEM Insufficient memory to allocate passwd structure.

ФАЙЛЫ

       /etc/passwd
              password database file

АТРИБУТЫ

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

СТАНДАРТЫ

       None.

ИСТОРИЯ

       SVr2.

НЕДОСТАТКИ

       The getpw() function is dangerous as it may overflow the provided
       buffer buf.  It is obsoleted by getpwuid(3).

СМОТРИТЕ ТАКЖЕ

       endpwent(3), fgetpwent(3), getpwent(3), getpwnam(3), getpwuid(3),
       putpwent(3), setpwent(3), passwd(5)

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                       getpw(3)

Страницы, которые ссылаются на эту страницу: fgetpwent(3), getpwent(3), getpwent_r(3), getpwnam(3), putpwent(3)