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FGETGRENT
Section: Linux Programmer's Manual (3)
Updated: 2008-07-10
Index
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NAME
fgetgrent - get group file entry
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 3.27 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/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
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