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PUTGRENT(3) Linux Programmer's Manual PUTGRENT(3)

NAME

     putgrent - write a group database entry to a file

SYNOPSIS

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

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

DESCRIPTION

     The putgrent() function is the counterpart for fgetgrent(3).  The func-
     tion 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 |
     +-----------+---------------+---------+

CONFORMING TO

     This function is a GNU extension.

SEE ALSO

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

COLOPHON

     This  page  is  part of release 4.16 of the Linux man-pages project.  A
     description of the project, information about reporting bugs,  and  the
     latest     version     of     this    page,    can    be    found    at
     https://www.kernel.org/doc/man-pages/.

GNU 2017-09-15 PUTGRENT(3)