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7df789e059
1999-06-23 Zack Weinberg <zack@rabi.columbia.edu>
* libio/stdio.h: Define stdin, stdout, stderr as macros.
* math/complex.h: Don't define
CX_LIMITED_RANGE_{ON,OFF,DEFAULT}. These are *pragmas* not
macros.
* wcsmbs/wchar.h: Fix comment.
* grp/grp.h: Use __foo_t_defined convention to typedef things
only once.
* io/sys/stat.h: Likewise.
* libio/stdio.h: Likewise.
* posix/unistd.h: Likewise.
* posix/sys/types.h: Likewise.
* posix/sys/wait.h: Likewise.
* pwd/pwd.h: Likewise.
* signal/signal.h: Likewise.
* sysdeps/generic/stdint.h: Likewise.
* sysdeps/gnu/utmpx.h: Likewise.
* termios/termios.h: Likewise.
150 lines
4.5 KiB
C
150 lines
4.5 KiB
C
/* Copyright (C) 1991, 92, 95, 96, 97, 98 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/*
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* POSIX Standard: 9.2.1 Group Database Access <grp.h>
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*/
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#ifndef _GRP_H
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#define _GRP_H 1
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#include <features.h>
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__BEGIN_DECLS
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#include <bits/types.h>
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#define __need_size_t
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#include <stddef.h>
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/* For the Single Unix specification we must define this type here. */
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#if defined __USE_XOPEN && !defined __gid_t_defined
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typedef __gid_t gid_t;
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# define __gid_t_defined
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#endif
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/* The group structure. */
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struct group
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{
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char *gr_name; /* Group name. */
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char *gr_passwd; /* Password. */
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__gid_t gr_gid; /* Group ID. */
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char **gr_mem; /* Member list. */
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};
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#if defined __USE_SVID || defined __USE_GNU
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# define __need_FILE
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# include <stdio.h>
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#endif
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#if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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/* Rewind the group-file stream. */
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extern void setgrent __P ((void));
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/* Close the group-file stream. */
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extern void endgrent __P ((void));
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/* Read an entry from the group-file stream, opening it if necessary. */
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extern struct group *getgrent __P ((void));
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#endif
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#ifdef __USE_SVID
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/* Read a group entry from STREAM. */
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extern struct group *fgetgrent __P ((FILE *__stream));
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#endif
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#ifdef __USE_GNU
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/* Write the given entry onto the given stream. */
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extern int putgrent __P ((__const struct group *__restrict __p,
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FILE *__restrict __f));
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#endif
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/* Search for an entry with a matching group ID. */
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extern struct group *getgrgid __P ((__gid_t __gid));
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/* Search for an entry with a matching group name. */
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extern struct group *getgrnam __P ((__const char *__name));
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#if defined __USE_POSIX || defined __USE_MISC
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# ifdef __USE_MISC
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/* Reasonable value for the buffer sized used in the reentrant
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functions below. But better use `sysconf'. */
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# define NSS_BUFLEN_GROUP 1024
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# endif
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/* Reentrant versions of some of the functions above.
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PLEASE NOTE: the `getgrent_r' function is not (yet) standardized.
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The interface may change in later versions of this library. But
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the interface is designed following the principals used for the
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other reentrant functions so the chances are good this is what the
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POSIX people would choose. */
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# if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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extern int getgrent_r __P ((struct group *__restrict __resultbuf,
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char *__restrict __buffer, size_t __buflen,
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struct group **__restrict __result));
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# endif
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/* Search for an entry with a matching group ID. */
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extern int getgrgid_r __P ((__gid_t __gid,
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struct group *__restrict __resultbuf,
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char *__restrict __buffer, size_t __buflen,
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struct group **__restrict __result));
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/* Search for an entry with a matching group name. */
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extern int getgrnam_r __P ((__const char *__restrict __name,
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struct group *__restrict __resultbuf,
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char *__restrict __buffer, size_t __buflen,
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struct group **__restrict __result));
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# ifdef __USE_SVID
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/* Read a group entry from STREAM. This function is not standardized
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an probably never will. */
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extern int fgetgrent_r __P ((FILE *__restrict __stream,
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struct group *__restrict __resultbuf,
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char *__restrict __buffer, size_t __buflen,
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struct group **__restrict __result));
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# endif
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#endif /* POSIX or reentrant */
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#ifdef __USE_BSD
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# define __need_size_t
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# include <stddef.h>
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/* Set the group set for the current user to GROUPS (N of them). */
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extern int setgroups __P ((size_t __n, __const __gid_t *__groups));
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/* Initialize the group set for the current user
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by reading the group database and using all groups
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of which USER is a member. Also include GROUP. */
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extern int initgroups __P ((__const char *__user, __gid_t __group));
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#endif /* Use BSD. */
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__END_DECLS
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#endif /* grp.h */
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