putgrent(3) — Linux manual page

putgrent(3)             Library Functions Manual             putgrent(3)

NAME

       putgrent - write a group database entry to a file

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #define _GNU_SOURCE         /* See feature_test_macros(7) */
       #include <grp.h>

       int putgrent(const struct group *restrict grp, FILE *restrict stream);

DESCRIPTION

       The putgrent() function is the counterpart for fgetgrent(3).  The
       function writes the content of the provided struct group into the
       stream.  The list of group members must be NULL-terminated or
       NULL-initialized.

       The struct group is defined as follows:

           struct group {
               char   *gr_name;      /* group name */
               char   *gr_passwd;    /* group password */
               gid_t   gr_gid;       /* group ID */
               char  **gr_mem;       /* group members */
           };

RETURN VALUE

       The function returns zero on success, and a nonzero value on
       error.

ATTRIBUTES

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

STANDARDS

       GNU.

SEE ALSO

       fgetgrent(3), getgrent(3), group(5)

COLOPHON

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

Pages that refer to this page: fgetgrent(3), getgrent(3), getgrent_r(3)

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