NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | SEE ALSO | COLOPHON
FGETGRENT(3) Linux Programmer's Manual FGETGRENT(3)
fgetgrent - get group file entry
#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
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 */
};
The fgetgrent() function returns a pointer to a group structure, or NULL if
there are no more entries or an error occurs.
ENOMEM Insufficient memory to allocate group structure.
SVr4.
endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgrnam(3),
putgrent(3), setgrent(3), group(5)
This page is part of release 3.23 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 2008-07-10 FGETGRENT(3)