149 lines
4.5 KiB
C
149 lines
4.5 KiB
C
/* Copyright (C) 1991, 92, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/*
|
|
* POSIX Standard: 9.2.1 Group Database Access <grp.h>
|
|
*/
|
|
|
|
#ifndef _GRP_H
|
|
#define _GRP_H 1
|
|
|
|
#include <features.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
#include <bits/types.h>
|
|
|
|
#define __need_size_t
|
|
#include <stddef.h>
|
|
|
|
|
|
/* For the Single Unix specification we must define this type here. */
|
|
#if defined __USE_XOPEN && !defined __gid_t_defined
|
|
typedef __gid_t gid_t;
|
|
# define __gid_t_defined
|
|
#endif
|
|
|
|
/* The group structure. */
|
|
struct group
|
|
{
|
|
char *gr_name; /* Group name. */
|
|
char *gr_passwd; /* Password. */
|
|
__gid_t gr_gid; /* Group ID. */
|
|
char **gr_mem; /* Member list. */
|
|
};
|
|
|
|
|
|
#if defined __USE_SVID || defined __USE_GNU
|
|
# define __need_FILE
|
|
# include <stdio.h>
|
|
#endif
|
|
|
|
|
|
#if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
|
|
/* Rewind the group-file stream. */
|
|
extern void setgrent (void) __THROW;
|
|
|
|
/* Close the group-file stream. */
|
|
extern void endgrent (void) __THROW;
|
|
|
|
/* Read an entry from the group-file stream, opening it if necessary. */
|
|
extern struct group *getgrent (void) __THROW;
|
|
#endif
|
|
|
|
#ifdef __USE_SVID
|
|
/* Read a group entry from STREAM. */
|
|
extern struct group *fgetgrent (FILE *__stream) __THROW;
|
|
#endif
|
|
|
|
#ifdef __USE_GNU
|
|
/* Write the given entry onto the given stream. */
|
|
extern int putgrent (__const struct group *__restrict __p,
|
|
FILE *__restrict __f) __THROW;
|
|
#endif
|
|
|
|
/* Search for an entry with a matching group ID. */
|
|
extern struct group *getgrgid (__gid_t __gid) __THROW;
|
|
|
|
/* Search for an entry with a matching group name. */
|
|
extern struct group *getgrnam (__const char *__name) __THROW;
|
|
|
|
#if defined __USE_POSIX || defined __USE_MISC
|
|
|
|
# ifdef __USE_MISC
|
|
/* Reasonable value for the buffer sized used in the reentrant
|
|
functions below. But better use `sysconf'. */
|
|
# define NSS_BUFLEN_GROUP 1024
|
|
# endif
|
|
|
|
/* Reentrant versions of some of the functions above.
|
|
|
|
PLEASE NOTE: the `getgrent_r' function is not (yet) standardized.
|
|
The interface may change in later versions of this library. But
|
|
the interface is designed following the principals used for the
|
|
other reentrant functions so the chances are good this is what the
|
|
POSIX people would choose. */
|
|
|
|
# if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
|
|
extern int getgrent_r (struct group *__restrict __resultbuf,
|
|
char *__restrict __buffer, size_t __buflen,
|
|
struct group **__restrict __result) __THROW;
|
|
# endif
|
|
|
|
/* Search for an entry with a matching group ID. */
|
|
extern int getgrgid_r (__gid_t __gid, struct group *__restrict __resultbuf,
|
|
char *__restrict __buffer, size_t __buflen,
|
|
struct group **__restrict __result) __THROW;
|
|
|
|
/* Search for an entry with a matching group name. */
|
|
extern int getgrnam_r (__const char *__restrict __name,
|
|
struct group *__restrict __resultbuf,
|
|
char *__restrict __buffer, size_t __buflen,
|
|
struct group **__restrict __result) __THROW;
|
|
|
|
# ifdef __USE_SVID
|
|
/* Read a group entry from STREAM. This function is not standardized
|
|
an probably never will. */
|
|
extern int fgetgrent_r (FILE *__restrict __stream,
|
|
struct group *__restrict __resultbuf,
|
|
char *__restrict __buffer, size_t __buflen,
|
|
struct group **__restrict __result) __THROW;
|
|
# endif
|
|
|
|
#endif /* POSIX or reentrant */
|
|
|
|
|
|
#ifdef __USE_BSD
|
|
|
|
# define __need_size_t
|
|
# include <stddef.h>
|
|
|
|
/* Set the group set for the current user to GROUPS (N of them). */
|
|
extern int setgroups (size_t __n, __const __gid_t *__groups) __THROW;
|
|
|
|
/* Initialize the group set for the current user
|
|
by reading the group database and using all groups
|
|
of which USER is a member. Also include GROUP. */
|
|
extern int initgroups (__const char *__user, __gid_t __group) __THROW;
|
|
|
|
#endif /* Use BSD. */
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* grp.h */
|