Manual Reference Pages  - FGETGRENT (3)

NAME

fgetgrent - get group file entry

CONTENTS

Synopsis
Description
Errors
Colophon

SYNOPSIS


#include <stdio.h> 

#include <sys/types.h> 

#include <grp.h> 

struct group *fgetgrent(FILE *stream);

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

fgetgrent(): _SVID_SOURCE

DESCRIPTION

The fgetgrent() function returns a pointer to a structure containing the group information from the file referred to by stream. The first time it is called it returns the first entry; thereafter, it returns successive entries. The file referred to by stream must have the same format as /etc/group (see group(5)).

The group structure is defined in <grp.h> 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 fgetgrent() function returns a pointer to a group structure, or NULL if there are no more entries or an error occurs.

ERRORS

ENOMEM Insufficient memory to allocate group structure.

CONFORMING TO

SVr4.

SEE ALSO

endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgrnam(3), putgrent(3), setgrent(3), group(5)

COLOPHON

This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


GNU FGETGRENT (3) 2008-07-10
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